| ultrastruct of red-sore lesions on largemouth bass (micropterus salmoides): associattion of the ciliate epistylis sp. and the bacterium aeromonas hydrophila. | epizootic outbreaks of red-sore disease in several reservoirs in the southeastern united states have been reported to cause heavy mortality among several species of fish having sport and commercial value. the etiologic agent is said to be the peritrich ciliate epistylis sp.; secondary infection by the gram-negative bacterium aeromonas hydrophila produces hemorrhagic septicemia which results in death. however, in recent studies on the largemouth bass micropterus salmoides, epistylis sp. could be ... | 1978 | 102785 |
| trout mortalities as a result of streptococcus infection. | excessive mortalities were experienced in the bigger rainbow trout (salmo gairdneri) at an efficiently managed trout farm. all tests for known toxins in the feed and water proved to be negative. a faecal streptococcus which belongs to the lancefield group d but which could not be identified as belonging to any of the recognized species within this group, was isolated from the spleens, livers and kidneys of affected fish. pathogenicity studies with this organism proved it to be highly fatal to tr ... | 1979 | 121769 |
| [study of the larval stages of monogenea of fishes (author's transl)]. | the ciliate cells and the oncomiracidial chetotaxy of the following species are described: among the polyopisthocotylea : gastrocotyle trachurii van bneden and hesse, 1863, gastrocotylidae, parasite of trachurus trachurus (l.); cyclocotyla bellones (otto, 1821), diclidophoradae, living on the cymothoides isopods of sparidae : boops boops (l.) and spicara maena (l.) ; mazocraes sp., mazocraeidae, parasite of sardinella maderensis (lowe, 1841). among the monopisthocotylea : ligophorus vanbenedeni ... | 1978 | 754614 |
| life history and habitat analysis of the eye fluke diplostomum spathaceum (trematoda: diplostomatidae) in utah. | diplostomum spathaceum which is widespread throughout utah in desert, mountain valley, and high alpine lakes, causes a disease known as diplostomatosis or eye fluke disease. snails (756) were examined and two species, lymnaea stagnalis and l. palustris were positive for d. spathaceum. examination of 838 fish, which included 19 species, revealed 10 species (salmo trutta, catostomus discobulus, salmo clarki, micropterus salmoides, catostomus platyrhynchus, salmo gairdneri, gila atraria, catostomus ... | 1977 | 864559 |
| seasonal abundance of neoechinorhynchus cylindratus taken from largemouth bass (micropterus salmoides) in a heated reservoir. | samples of largemouth bass were collected from par pond located on the energy research and development administration's savannah river plant in aiken, south carolina, from june 1972 to may 1973 inclusive. the sampling stations reflected water temperatures which were both normal and greater than 10 degrees c above normal for the area. the acanthocephalan neoechinorhynchus cylindratus was the dominant species found in the bass sampled. incidences of infection for this parasite were generally great ... | 1976 | 1012752 |
| proteocephalus ambloplitis and contracaecum sp. from largemouth bass (micropterus salmoides) stocked into boundary reservoir, saskatchewan. | nonresident (introduced) largemouth bass (micropterus salmoides) from boundary reservoir, saskatchewan were examined for helminths. four species of parasites were found (diplostomum sp., proteocephalus ambloplitis, pomphorhynchus bulbocolli, and contracaecum sp.). contracaecum sp. larvae were absent in age-0 and age-1 bass, but prevalence and mean intensity increased with age for bass age-2 or older. similarly, the prevalence and mean intensity of p. ambloplitis plerocercoids in bass were low un ... | 1990 | 2380875 |
| evolution of motor patterns: aquatic feeding in salamanders and ray-finned fishes. | patterns of muscle activity (motor patterns) have generally been found to be strongly conserved during the evolution of aquatic feeding behavior within closely related groups of fishes and salamanders. we conducted a test of the generality of motor pattern conservation with a much broader phylogenetic scope than has been done previously. activity patterns of three cranial muscles were quantified from electromyographic (emg) recordings made during suction feeding in a salamander (ambystoma mexica ... | 1989 | 2611639 |
| interaction of bass tapeworm, proteocephalus ambloplitis, and neoechinorhynchus sp. (acanthocephala) in largemouth bass, micropterus salmoides. | the number of plerocercoids of the bass tapeworm, proteocephalus ambloplitis, in wild largemouth bass was negatively correlated (r = -0.94) with the number of neoechinorhynchus sp. competitive inhibition between the 2 parasites appeared to exist. similarly, the numbers of neoechinorhynchus sp. in wild bass decreased when adult bass tapeworms were present in the intestine. proteocephalus ambloplitis plerocercoids used to challenge bass vaccinated with either p. ambloplitis adult or neoechinorhync ... | 1988 | 3193328 |
| gonadal neoplasms in largemouth bass, micropterus salmoides and japanese dace (ugui), tribolodon hakonensis. | massive abdominal enlargement was observed at relatively high incidence in two species of fish kept in two public aquariums for several years. three seminomas, one dysgerminoma and two fibromas were found in 14 largemouth bass, micropterus salmoides, kept in a public aquarium for over 80 months. four seminomas and one nephroblastoma were found in 24 japanese dace (ugui), tribolodon hakonensis, kept for more than 57 months in two different aquariums. the seminomas in m. salmoides showed rapid gro ... | 1984 | 6500234 |
| glutamine- and n-acetyl-l-glutamate-dependent carbamoyl phosphate synthetase from micropterus salmoides. purification, properties, and inhibition by glutamine analogs. | the glutamine- and n-acetyl-l-glutamate-dependent carbamoyl phosphate synthetase iii present in liver of largemouth bass (micropterus salmoides) has been highly purified. the properties of the enzyme are generally similar to the properties of the carbamoyl phosphate synthetase iii from spiny dogfish (squalus acanthias) previously described (anderson, p. m. (1981) j. biol. chem. 256, 12228-12238). however, the bass enzyme is not subject to self-association, and the effects of urea and, particular ... | 1983 | 6602805 |
| mercury accumulation in largemouth bass (micropterus salmoides) in a florida lake. | rates of mercury accumulation were examined in male and female largemouth bass (micropterus salmoides) from lake tohopekaliga, florida, to establish methods for fish consumption advisories for the protection of human health. in addition, concentrations were determined in five lower trophic level fish species. total mercury concentrations in adult largemouth bass muscle tissue ranged from 0.16 to 1.10 micrograms/g (fresh weight) and increased as fish increased in size and age. whole-body mercury ... | 1994 | 7811106 |
| an epizootic of edwardsiella tarda in largemouth bass (micropterus salmoides). | edwardsiella tarda, an opportunistic bacterial pathogen, was isolated from dying largemouth bass (micropterus salmoides) during an epizootic in a eutrophic lake system, lochloosa lake, florida, usa. approximately 1,500 adult fish died over a 6-wk period during the late summer and early fall of 1991. a mixed population of aerobic bacteria (e. tarda, aeromonas hydrophila, and pseudomonas sp.) was isolated from deep cutaneous ulcers and intestines of moribund bass. however, e. tarda in pure culture ... | 1993 | 8487385 |
| subcellular localization and biochemical properties of the enzymes of carbamoyl phosphate and urea synthesis in the batrachoidid fishes opsanus beta, opsanus tau and porichthys notatus | the subcellular localization and biochemical properties of the enzymes of carbamoyl phosphate and urea synthesis were examined in three representatives of fishes of the family batrachoididae, the gulf toadfish (opsanus beta), the oyster toadfish (opsanus tau) and the plainfin midshipman (porichthys notatus). the primary objective of the study was to compare the biochemical characteristics of these fishes, which represent a range between ammoniotelism and ureotelism (o. beta being facultatively u ... | 1995 | 9318521 |
| methylmercury in fish from owyhee reservoir in southeast oregon: scientific uncertainty and fish advisories. | data collected during 1987-1994 showed elevated levels of mercury (hg) in fish tissue from the owyhee reservoir in southeastern oregon. sixty-five percent of the samples analyzed had total hg levels exceeding the us environmental protection agency's (epa) health screening value of 0.6 mg/kg. eighteen out of 89 (20%) fish tissue samples also had total hg levels greater than the us food and drug administration's (fda) mercury action level of 1.0 mg/kg. the overall mean hg content for all fish coll ... | 1997 | 9335158 |
| n-acetyl-l-glutamate and the urea cycle in gulf toadfish (opsanus beta) and other fish. | carbamoyl phosphate synthetase i (cpsase i) catalyzes the first reaction of the urea cycle in mammalian ureotelic species. the positive allosteric cofactor n-acetyl-l-glutamate (aga) is required for cpsase i activity and is important for regulation of the urea cycle. a similar enzyme, cpsase iii, catalyzes this reaction in fish; cpsase iii differs from cpsase i in that it utilizes glutamine as the nitrogen-donating substrate instead of ammonia. aga also stimulates the cpsase iii-catalyzed reacti ... | 1998 | 9466820 |
| neoergasilus japonicus (poecilostomatoida: ergasilidae), a parasitic copepod new to north america. | adult, gravid female neoergasilus japonicus harada, 1930 are described from several species of fish from lee county, alabama. samples of bluegill lepomis macrochirus rafinesque (n = 25), largemouth bass micropterus salmoides lacépéde (n = 6), redear sunfish lepomis microlophus gunther (n = 5), and channel catfish ictalurus punctatus rafinesque (n = 1) were collected between november 1993 and may 1995. prevalence of infection was 100% in all fish collected. the dorsal fin was the site of infectio ... | 1998 | 9488343 |
| molecular characterization of a ranavirus isolated from largemouth bass micropterus salmoides. | an iridovirus, isolated from largemouth bass micropterus salmoides following a die-off among adult fish and provisionally designated largemouth bass virus (lmbv), was characterized by analysis of viral protein synthesis in infected cells, viral dna restriction fragment length polymorphisms (rflp), and sequence determination of the major capsid protein and viral dna methyltransferase genes. all 3 approaches yielded results consistent with the suggestion that lmbv was a member of the genus ranavir ... | 1999 | 10494500 |
| morphological basis of kinematic diversity in feeding sunfishes | the effects of differences among species in the scaling of lower jaw levers on the scaling of prey-capture kinematics are explored in three species of centrarchid fishes. we consider the jaw opening and closing lever systems and calculate the consequences of differences in the scaling of the in-levers for the scaling of the time taken to open the mouth (t(o)) and the time taken to close the mouth (t(c)) during prey capture. predictions of t(o) and t(c), based on differences in the scaling of jaw ... | 1999 | 10539958 |
| preliminary description of lesions in juvenile largemouth bass injected with largemouth bass virus. | juvenile largemouth bass micropterus salmoides were intraperitoneally injected with largemouth bass virus (lmbv), a member of the genus ranavirus, family iridoviridae. moribund fish which had been injected with 10(6.2) tissue culture infectious doses, 50% endpoint (tcid50), were sampled 4 d after injection; other largemouth bass injected with this dose died between 3 and 5 d after injection. fish injected with 10(2.8) tcid50 of lmbv were also examined after 4 d and had lesions similar to those o ... | 2000 | 10715819 |
| a survey of size-specific mercury concentrations in game fish from maryland fresh and estuarine waters. | a survey of size-specific mercury (hg) concentrations in game fish from a subset of maryland fresh and estuarine waters was conducted, in which hg concentrations in 112 fish from seven freshwater impoundments and three tidal and four estuarine locations in chesapeake bay and its tributaries were measured. striped bass (morone saxatilis) was the most intensively examined species. of the fish examined, the largest freshwater sportfish contained the highest hg concentrations. striped bass and large ... | 2000 | 10790502 |
| evidence for leptin expression in fishes. | tissues from bony fish were screened with anti-mouse leptin antibodies to detect the presence of the fat-regulating hormone in fishes. low molecular-weight (16 kda) immunoreactive bands were detected in blood, brain, heart and liver of green sunfish (lepomis cyanellus), bluegill sunfish (lepomis macrochirus), largemouth bass (micropterus salmoides), white crappie (pomonix annularis), channel catfish (ictalurus punctatus), and rainbow trout (oncorhynchus mykiss). to further verify that we had ide ... | 2000 | 10797324 |
| effects of bioaccumulation of pcbs on biodiversity and distribution of fish in two creeks in east tennessee (usa). | the oak ridge reservation, established in tennessee during world war ii as a research, development and process facilities support for the manhattan project, released large quantities of organic, inorganic and radionuclear contaminants into the environment. their effects are particularly evident in aquatic ecosystems, as chemical concentrations in water, and as a disease in biodiversity and species richness. east fork poplar creek and its tributary, bear creek flow inside the reservation and have ... | 2001 | 11554182 |
| mercury and selenium in fish from the savannah river: species, trophic level, and locational differences. | levels of contaminants in fish are of considerable interest because of potential effects on the fish themselves, as well as on other organisms that consume them. in this article we compare the mercury levels in muscle tissue of 11 fish species from the savannah river, as well as selenium levels because of its known protective effect against mercury toxicity. we sampled fish from three stretches of the river: upstream, along, and downstream the department of energy's savannah river site, a former ... | 2001 | 11683594 |
| identification, localization and morphology of apud cells in gastroenteropancreatic system of stomach-containing teleosts. | aim:to identify the type localization and morphology of apud endocrine cells in the gastroenteropancreatic (gep) system of stomach-containing teleosts, and study apud endocrine system in the stomach, intestine and pancreas of fish species.methods:two kinds of immunocytochemical (icc) techniques of the streptavidin biotin-peroxidase complex (sabc) and streptavidin-peroxidase (s-p) method were used. the identification, localization and morphology of apud endocrine cells scattered in the mucosa of ... | 2000 | 11819706 |
| total mercury concentrations in lakes and fish of western maryland, usa. | the purpose of this study was to quantify total mercury concentrations in three species of fish in three lakes of western maryland: piney creek reservoir, deep creek lake, and lake habeeb. we measured total mercury concentrations in water from each lake and muscle tissue from 119 fish collected in fall 2000: 15 largemouth bass (micropterus salmoides), 15 yellow perch (perca flavescens), and 15 bluegill (lepomis macrochirus) from the piney creek reservoir; 15 largemouth bass, 15 yellow perch, and ... | 2002 | 11994787 |
| first record of neoergasilus japonicus (poecilostomatoida: ergasilidae), a parasitic copepod new to the laurentian great lakes. | the parasitic copepod neoergasilus japonicus, native to eastern asia, was first collected from 4 species of fish (fathead minnow, pimephales promelas; largemouth bass, micropterus salmoides; pumpkinseed sunfish, lepomis gibbosus; and yellow perch, perca flavescens) in july 1994 in saginaw bay, lake huron, michigan. further sampling in the bay in 2001 revealed infections on 7 additional species (bluegill, lepomis macrochirus; carp, cyprinus carpio; channel catfish, ictalurus punctatus; goldfish, ... | 2002 | 12197110 |
| first isolation of largemouth bass virus. | the first reported fish kill caused by largemouth bass virus (lmbv) occurred in 1995 in santee-cooper reservoir, south carolina, usa. subsequently, this iridovirus has been implicated in additional fish kills and has also been found in clinically healthy fish in numerous locations in the southeastern usa. we compared the virus from santee-cooper reservoir with a virus isolated in 1991 from large-mouth bass, micropterus salmoides, from lake weir, florida. restriction fragment length polymorphisms ... | 2002 | 12219979 |
| conjugation of 4-hydroxynonenal by largemouth bass (micropterus salmoides) glutathione s-transferases. | the glutathione s-transferases (gst) are a major group of conjugative enzymes involved in the detoxification of electrophilic compounds and products of oxidative stress. we have previously described the kinetics of hepatic gst conjugation in largemouth bass using a variety of synthetic gst reference substrates. in the present study, we investigated the ability of largemouth bass hepatic gsts to conjugate 4-hydroxynon-2-enal (4hne), a mutagenic and cytotoxic alpha-beta-unsaturated aldehyde produc ... | 2002 | 12408579 |
| fish tissue quality in the lower mississippi river and health risks from fish consumption. | between 1990 and 1994, samples of three shellfish species (i.e. blue crab, callinectes sapidus;crayfish, procambarus acutis; and river shrimp, macrobrachium ohionii) and 16 fish species and were collected at six sites along the lower mississippi river by the louisiana department of environmental quality, office of water resources in coordination with the us environmental protection agency. the fish species included: bigmouth buffalo (ictiobus cyanellus); blue catfish (ictalurus furcatus); carp ( ... | 2003 | 12526903 |
| cold acclimation strategy is highly variable among the sunfishes (centrarchidae). | we tested the hypothesis that the physiological strategy for acclimating to low body temperature is similar among closely related fish. largemouth bass (micropterus salmoides), green sunfish (lepomis cyanellus), bluegill sunfish (lepomis macrochirus), black crappie (pomonix nigromaculatus), and white crappie (pomonix annularis), all members of the family centrarchidae, were acclimated to 5 degrees and 25 degrees c. morphometric variables (total mass, total length, organ masses) and enzyme activi ... | 2002 | 12601611 |
| host specificity among ancyrocephalinae (monogenoidea) of nebraska sunfish. | this study addressed the problem of local patterns of host specificity among ancyrocephalinae (monogenoidea) on bass and sunfish species, when the hosts occur in different species combinations in separate ponds. one hundred fifty-three fish of the centrarchidae, from 4 study sites in nebraska, were collected. host species included bluegill (lepomis macrochirus), green sunfish (l. cyanellus), largemouth bass (micropterus salmoides), black crappie (pomoxis nigromaculatus), white crappie (p. annula ... | 2003 | 12659307 |
| pcr method for detection of largemouth bass virus. | a polymerase chain reaction (pcr) method was developed for largemouth bass virus (lmbv). this iridovirus can cause a lethal disease of largemouth bass micropterus salmoides, but also subclinically infects largemouth bass and other species of fishes. oligonucleotide primers were designed to specifically amplify the major capsid protein gene of lmbv. the protocol for sample processing and pcr provided a method that was more sensitive than cell culture for detection of lmbv in fish. the specific am ... | 2003 | 12718467 |
| epizootiology of eustrongylides ignotus in florida: transmission and development of larvae in intermediate hosts. | under laboratory conditions, 2 modes of transmission of eustrongylides ignotus (nematoda: dioctophymatoidea) to fish were identified. eastern mosquitofish (gambusia holbrooki) became infected after ingestion of either eggs of e. ignotus containing first-stage larvae or aquatic oligochaetes (limnodrilus hoffmeisteri) containing third-stage larvae of e. ignotus. after removal from the uterus of gravid e. ignotus females and incubation for 17-28 days, depending on temperature, it was found that par ... | 2003 | 12760643 |
| a human case of gnathostomiasis nipponica confirmed indirectly by finding infective larvae in leftover largemouth bass meat. | a human case of creeping eruption due to gnathostoma nipponicum was confirmed indirectly by finding infective advanced third-stage larvae in leftover largemouth bass meat. this is the first report indicating that the largemouth bass (micropterus salmoides) serves as a source of g. nipponicum infection in humans. | 2003 | 12760668 |
| factors affecting food chain transfer of mercury in the vicinity of the nyanza site, sudbury river, massachusetts. | the influence of the nyanza chemical waste dump superfund site on the sudbury river, massachusetts, was assessed by analysis of sediment, fish prey organisms, and predator fish from four locations in the river system. whitehall reservoir is an impoundment upstream of the site, and reservoir #2 is an impoundment downstream of the site. cedar street is a flowing reach upstream of the site, and sherman bridge is a flowing reach downstream of the site. collections of material for analysis were made ... | 2003 | 12858964 |
| a microscaled mercury saturation assay for metallothionein in fish. | a mercury (hg) saturation assay for measuring metallothionein (mt) in fish liver was modified by optimizing binding conditions to minimize the mercury and tissue consumed. the revised method uses stable hg at low concentrations instead of 203hg. at the reduced hg concentrations used, mt concentrations in livers homogenized in saline appeared to increase systematically with dilution in both bluegill sunfish (lepomis macrochirus) and largemouth bass (micropterus salmoides). this error suggested a ... | 2003 | 12959524 |
| phenotypic variation and vulnerability to predation in juvenile bluegill sunfish (lepomis macrochirus). | bluegill sunfish (lepomis macrochirus) are known to diversify into two forms specialized for foraging on either limnetic or littoral prey. because juvenile bluegills seek vegetative cover in the presence of largemouth bass (micropterus salmoides) predators, natural selection should favor the littoral body design at size ranges most vulnerable to predation. yet within bluegill populations, both limnetic and littoral forms occur where vegetation and predators are present. while adaptive for foragi ... | 2004 | 14517677 |
| emerging vesiculo-type virus infections of freshwater fishes in europe. | rhabdoviruses were isolated from perch perca fluviatilis and largemouth bass micropterus salmoides exhibiting clinical signs of disease. preliminary studies indicated that these viruses could be neutralised by antisera to perch rhabdovirus (dorson et al. 1984) and may be similar to those previously isolated from grayling thymallus thymallus and pike-perch stizostedion stizostedion. the relationship between these viruses and the previously characterised fish rhabdoviruses, pike fry rhabdovirus (p ... | 2003 | 14960032 |
| comparison of two sites in mobile bay using in vivo biomarkers in largemouth bass, sediment bioassays, and sediment contaminant analysis. | this research addresses whether chemical contaminants are having a biologically measurable effect on largemouth bass (micropterus salmoides), an important fish species in the mobile bay national estuary. bass and sediment samples were collected in september 2001 from big bateau and d'olive bays; the latter has been suggested to be an environmentally impacted site. there was a significant difference in the age distribution of bass collected from the two sites. however, none of the animals showed ... | 2004 | 15253048 |
| morphology predicts suction feeding performance in centrarchid fishes. | suction feeding fish differ in their capacity to generate subambient pressure while feeding, and these differences appear to relate to morphological variation. we developed a morphological model of force transmission in the fish head and parameterized it with measurements from individual fish. the model was applied to 45 individuals from five species of centrarchid fishes: lepomis macrochirus, lepomis punctatus, lepomis microlophus, micropterus salmoides and pomoxis nigromaculatus. measurements ... | 2004 | 15472018 |
| temperature sensitivity of calcium binding for parvalbumins from antarctic and temperate zone teleost fishes. | parvalbumin (pv) is a soluble calcium-binding protein that is especially abundant in fast-twitch muscles of fish and other lower vertebrates. despite its prevalence in ectothermic taxa, few data address the effects of temperature on pv binding function. in this study, calcium dissociation constants (kd) were measured as a function of temperature (0-25 degrees c) for pv from two antarctic (gobionotothen gibberifrons and chaenocephalus aceratus) and two temperate zone fish species (cyprinus carpio ... | 2005 | 15748857 |
| factors controlling mercury and methylmercury concentrations in largemouth bass (micropterus salmoides) and other fish from maryland reservoirs. | the concentration of mercury (hg) and methylmercury (mehg) was determined for largemouth bass (micropterus salmoides), bluegill (lepomis macrochirus) and black crappie (pomoxis nigromaculatus) from maryland reservoirs. overall, there was a large difference in normalized bass mehg concentration (for fish of approximately 370 mm) between the reservoirs, ranging from <100 ng g(-1) to almost 800 ng g(-1). furthermore, the relationship between fish weight and mehg concentration varied substantially b ... | 2005 | 16205988 |
| environmental contaminants and biomarker responses in fish from the rio grande and its u.s. tributaries: spatial and temporal trends. | we collected, examined, and analyzed 368 fish of seven species from 10 sites on rivers of the rio grande basin (rgb) during late 1997 and early 1998 to document temporal and geographic trends in the concentrations of accumulative contaminants and to assess contaminant effects on the fish. sites were located on the mainstem of the rio grande and on the arroyo colorado and pecos river in texas (tx), new mexico (nm), and colorado. common carp (cyprinus carpio) and largemouth bass (micropterus salmo ... | 2005 | 16227080 |
| successful treatment of largemouth bass, micropterus salmoides (l.), with epitheliocystis hyperinfection. | | 2005 | 16302956 |
| fish reintroductions reveal smooth transitions between lake community states. | whether communities respond smoothly or discontinuously to changing environmental conditions has important consequences for the preservation and restoration of ecosystems. theory shows that communities may exhibit a variety of responses to environmental change, including abrupt transitions due to the existence of alternate states. however, there have been few opportunities to look for such transitions in nature. here, we examine the impact of a two-orders-of-magnitude decrease and then increase ... | 2006 | 16637356 |
| a screening-level assessment of lead, cadmium, and zinc in fish and crayfish from northeastern oklahoma, usa. | the objective of this study was to evaluate potential human and ecological risks associated with metals in fish and crayfish from mining in the tri-states mining district (tsmd). crayfish (orconectes spp.) and fish of six frequently consumed species (common carp, cyprinus carpio; channel catfish, ictalurus punctatus; flathead catfish, pylodictis olivaris; largemouth bass, micropterus salmoides; spotted bass, m. punctulatus; and white crappie, pomoxis annularis) were collected in 2001--2002 from ... | 2006 | 16791710 |
| multidimensional analysis of suction feeding performance in fishes: fluid speed, acceleration, strike accuracy and the ingested volume of water. | suction feeding fish draw prey into the mouth using a flow field that they generate external to the head. in this paper we present a multidimensional perspective on suction feeding performance that we illustrate in a comparative analysis of suction feeding ability in two members of centrarchidae, the largemouth bass (micropterus salmoides) and bluegill sunfish (lepomis macrochirus). we present the first direct measurements of maximum fluid speed capacity, and we use this to calculate local fluid ... | 2006 | 16809462 |
| a hybrid empirical-mechanistic modeling approach for extrapolating biota-sediment accumulation factors and bioaccumulation factors across species, time, and/or ecosystems. | an approach is presented for extrapolating field-measured biota-sediment accumulation factors (bsafs) and bioaccumulation factors (bafs) across species, time, and/or ecosystems. this approach, called the hybrid bioaccumulation modeling approach, uses mechanistic bioaccumulation models to extrapolate field-measured bioaccumulation data (i.e., bsafs and bafs) to new sets of ecological conditions. the hybrid approach predicts relative differences in bioaccumulation using food web models with two se ... | 2006 | 16833159 |
| feeding, fins and braking maneuvers: locomotion during prey capture in centrarchid fishes. | locomotion is an integral aspect of the prey capture strategy of almost every predatory animal. for fishes that employ suction to draw prey into their mouths, locomotor movements are vital for the correct positioning of the mouth relative to the prey item. despite this, little is known regarding the relationships between locomotor movements and prey capture. to gain insights into how fishes move during prey capture and the mechanisms underlying deceleration during prey capture, i measured the fi ... | 2007 | 17170154 |
| variations in pcb concentrations between genders of six warmwater fish species in lake logan martin, alabama, usa. | we collected and analyzed 955 individual fish (six species) for sexual differences in pcb bioaccumulations from a southeastern, usa reservoir. using 2-way ancovas, we found significant differences in fillet pcb concentrations between sexes for channel catfish (ictalurus punctatus), largemouth bass (micropterus salmoides) and spotted bass (micropterus punctulatus). striped bass (morone saxatilus), black crappie (pomoxis nigromaculatus) and freshwater drum (aplodinotus grunniens) did not display d ... | 2007 | 17490714 |
| allometric scaling in centrarchid fish: origins of intra- and inter-specific variation in oxidative and glycolytic enzyme levels in muscle. | the influence of body size on metabolic rate, muscle enzyme activities and the underlying patterns of mrna for these enzymes were explored in an effort to explain the genetic basis of allometric variation in metabolic enzymes. we studied two pairs of sister species of centrarchid fish: black bass (largemouth bass micropterus salmoides and smallmouth bass micropterus dolomieui) and sunfish (pumpkinseed lepomis gibbosus and bluegill lepomis macrochirus). our goal was to assess the regulatory basis ... | 2007 | 17951421 |
| mercury in sport fish from the sacramento-san joaquin delta region, california, usa. | total mercury (hg) concentrations were determined in fillet tissue of sport fish captured in the sacramento-san joaquin river delta and surrounding tributaries, a region particularly impacted by historic gold and mercury mining activity. in 1999 and 2000, mercury concentrations were measured in 767 samples from ten fish species. largemouth bass (micropterus salmoides), the primary target species, exhibited a median hg concentration of 0.53 mug g(-1) (n=406). only 23 largemouth bass (6%) were bel ... | 2008 | 18063015 |
| aphanomyces invadans and ulcerative mycosis in estuarine and freshwater fish in florida. | in the spring of 1998, the florida fish and wildlife research institute received numerous reports of lesioned or ulcerated fish primarily from the st. lucie estuary on the southeast coast of florida, an area known since the late 1970s for lesions of the ulcerative mycosis (um) type. from these and archived reports, as well as others received from different areas of florida, we documented that diseased specimens had randomly distributed skin ulcers (usually reddened or hemorrhagic) with raised ir ... | 2007 | 18236628 |
| effects of the pesticide methoxychlor on gene expression in the liver and testes of the male largemouth bass (micropterus salmoides). | the organochlorine pesticide methoxychlor (mxc) is an environmental estrogen known to stimulate the expression of the egg-yolk protein, vitellogenin (vtg) in fish species. to begin to understand the underlying mechanisms for how mxc exerts its deleterious effects on the endocrine system, male largemouth bass (micropterus salmoides) were treated with 2.5, 10, or 25mg/kg mxc and compared to fish pair-treated with 1mg/kg 17 beta-estradiol (e2), and vehicle control. fish were sacrificed 24, 48, or 7 ... | 2008 | 18279978 |
| quantitative polymerase chain reaction assay for largemouth bass virus. | the use of quantitative polymerase chain reaction (qpcr) to test for largemouth bass virus (lmbv) was evaluated during a challenge experiment in which largemouth bass micropterus salmoides were immersed in the type strain of lmbv. the real-time pcr and cell culture methods were both used to measure lmbv present in the inoculum. additional samples tested by qpcr included gill, gonad, kidney, liver, mucus, spleen, and swim bladder. a plasmid clone containing a 248-base pair (bp) fragment of the ma ... | 2007 | 18333479 |
| three new species of philometrids (nematoda: philometridae) from centrarchid fishes in the usa. | the following 3 new species of the philometridae (nematoda: dracunculoidea) are described from freshwater centrarchid fishes (centrarchidae: perciformes) from eastern north america on the basis of museum and newly collected specimens: philometra orbitalensis n. sp. and philometroides aphanonaris n. sp. from the oculo-orbits and subcutaneous tissues of the head, respectively, of the largemouth bass micropterus salmoides, and philometroides wellborni n. sp. from the oculo-orbits of the bluegill le ... | 2008 | 18576837 |
| ecological risk of methylmercury in everglades national park, florida, usa. | dramatic declines in mercury levels have been reported in everglades biota in recent years. yet, methylmercury (mehg) hot spots remain. this paper summarizes a risk assessment of mehg exposure to three piscivorous wildlife species (bald eagle, haliaeetus leucocephalus; wood stork, mycteria americana; and great egret, ardea albus) foraging at a mehg hot spot in northern everglades national park (enp). available data consisted of literature-derived life history parameters and tissue concentrations ... | 2008 | 18679795 |
| detection of salmonellae from fish in a natural river system. | sediment, water, and fish gut samples taken at three sites near the headwaters of the san marcos river, texas, were analyzed for salmonellae salmonella spp. by culture and molecular techniques. while enrichment cultures from sediment and water samples from the two uppermost sites were negative for salmonellae in polymerase chain reaction analyses, both sediment and water samples were positive at the downstream site. at all sites, salmonellae were present in the guts of different fishes (e.g., la ... | 2008 | 18942591 |
| a survey to determine the presence and distribution of largemouth bass virus in wild freshwater bass in new york state. | during 2004 and 2005 a survey was conducted to investigate the presence and geographic distribution of largemouth bass virus (lmbv) in new york state. this iridovirus is widely distributed across the eastern united states; however, it had not previously been reported in new york state. two hundred and eighty-three wild largemouth bass micropterus salmoides and 8 smallmouth bass m. dolomieu were collected from 37 locations across the state. no clinical signs of lmbv or mortalities attributable to ... | 2008 | 18942592 |
| feeding muscles scale differently from swimming muscles in sunfish (centrarchidae). | the physiological properties of vertebrate skeletal muscle typically show a scaling pattern of slower contractile properties with size. in fishes, the myotomal or swimming muscle reportedly follows this pattern, showing slower muscle activation, relaxation and maximum shortening velocity (v(max)) with an increase in body size. we asked if the muscles involved in suction feeding by fishes would follow the same pattern. we hypothesized that feeding muscles in fishes that feed on evasive prey are u ... | 2009 | 19126527 |
| identification of centrarchid hepcidins and evidence that 17beta-estradiol disrupts constitutive expression of hepcidin-1 and inducible expression of hepcidin-2 in largemouth bass (micropterus salmoides). | hepcidin is a highly conserved antimicrobial peptide and iron-regulatory hormone. here, we identify two hepcidin genes (hep-1 and hep-2) in largemouth bass (micropterus salmoides) and smallmouth bass (micropterus dolomieu). hepcidin-1 contains a putative atcun metal-binding site in the amino-terminus that is missing in hepcidin-2, suggesting that hepcidin-1 may function as an iron-regulatory hormone. both hepcidins are predominately expressed in the liver of largemouth bass, similar to other fis ... | 2009 | 19376234 |
| survival of vaccinated, feed-trained largemouth bass fry (micropterus salmoides floridanus) during natural exposure to flavobacterium columnare. | vaccinated, feed-trained largemouth bass fry (micropterus salmoides floridanus) were cohabited with sham-vaccinated fish. fish were exposed, under natural conditions, to flavobacterium columnare, a ubiquitous bacterium associated with columnaris disease. during every time interval, the probability that a vaccinated fish would survive past time, t, was greater than for sham-vaccinated fish and survivor functions were significantly different (p-value <0.001). overall, vaccinated fish had a 43% low ... | 2009 | 19450638 |
| spatiotemporal trends in fish mercury from a mine-dominated ecosystem: clear lake, california. | clear lake, california, usa, receives acid mine drainage and mercury (hg) from the sulphur bank mercury mine, a u.s. environmental protection agency (u.s. epa) superfund site that was active intermittently from 1873 to 1957 and partially remediated in 1992. mercury concentrations were analyzed primarily in four species of clear lake fishes: inland silversides (menidia beryllina, planktivore), common carp (cyprinus carpio, benthic scavenger/omnivore), channel catfish (ictalurus punctatus, benthic ... | 2008 | 19475924 |
| largemouth bass virus in texas: distribution and management issues. | in response to fish kills at prominent fishing sites for largemouth bass micropterus salmoides, such as lake fork and sam rayburn reservoir, the texas parks and wildlife department began a systematic evaluation of state waters for the presence of largemouth bass virus (lmbv). the survey comprised 49 water bodies and 13 river basins, and a total of 2,876 adult bass were collected by electrofishing and angling during the summer and fall of 2000. the virus was initially detected by means of cell cu ... | 2009 | 19485124 |
| the effects of largemouth bass virus on a quality largemouth bass population in arkansas. | a 22.4-ha impoundment experienced an outbreak of largemouth bass (micropterus salmoides) virus (lmbv) disease in the summer of 2006. all dead or dying largemouth bass observed throughout the entire event were recorded and removed. in this study, we estimated mortality and examined size distribution, condition, and biomass following the outbreak. boat-mounted electrofishing was used to collect largemouth bass for a mark-recapture population estimate and other population metrics. fish samples were ... | 2009 | 19617487 |
| widespread occurrence of intersex in black basses (micropterus spp.) from u.s. rivers, 1995-2004. | intersex occurrence in freshwater fishes was evaluated for nine river basins in the united states. testicular oocytes (predominantly male testes containing female germ cells) were the most pervasive form of intersex observed, even though similar numbers of male (n=1477) and female (n=1633) fish were examined. intersex was found in 3% of the fish collected. the intersex condition was observed in four of the 16 species examined (25%) and in fish from 34 of 111 sites (31%). intersex was not found i ... | 2009 | 19717194 |
| interactions of multiple predators with different foraging modes in an aquatic food web. | top predators can have different foraging modes that may alter their interactions and effects on food webs. interactions between predators may be non-additive resulting from facilitation or interference, whereas their combined effects on a shared prey may result in emergent effects that are risk enhanced or risk reduced. to test the importance of multiple predators with different foraging modes, we examined the interaction between a cruising predator (largemouth bass, micropterus salmoides) and ... | 2010 | 19777265 |
| aquatic contaminants alter genes involved in neurotransmitter synthesis and gonadotropin release in largemouth bass. | many aquatic contaminants potentially affect the central nervous system, however the underlying mechanisms of how toxicants alter normal brain function are not well understood. the objectives of this study were to compare the effects of emerging and prevalent environmental contaminants on the expression of brain transcripts with a role in neurotransmitter synthesis and reproduction. adult male largemouth bass (micropterus salmoides) were injected once for a 96 h duration with control (water or o ... | 2009 | 19781795 |
| energetic limitations on suction feeding performance in centrarchid fishes. | energetic analysis of ecologically relevant behaviors can be useful because animals are energetically limited by available muscle mass. in this study we hypothesized that two major determinants of suction feeding performance, the magnitudes of buccal volumetric expansion and subambient buccal pressure, would be correlated with, and limited by, available muscle mass. at least four individuals of three centrarchid species were studied: largemouth bass (micropterus salmoides), bluegill (lepomis mac ... | 2009 | 19801429 |
| mycobacteria isolated from chesapeake bay fish. | mycobacteriosis in fish can result in ulcers, emaciation, and in some cases death. mycobacteria have been previously isolated from a variety of chesapeake bay fish species, and the current study was designed to identify potential host specificity and location fidelity of mycobacterial isolates. mycobacteria were isolated from wild fish of the chesapeake bay collected from the upper bay, the choptank river, herring bay, the chicamacomico river, the pocomoke river and the potomac river in 2003-200 ... | 2010 | 19909394 |
| effects of acute dieldrin exposure on neurotransmitters and global gene transcription in largemouth bass (micropterus salmoides) hypothalamus. | exposure to dieldrin induces neurotoxic effects in the vertebrate cns and disrupts reproductive processes in teleost fish. reproductive impairment observed in fish by dieldrin is likely the result of multiple effects along the hypothalamic-pituitary-gonadal axis, but the molecular signaling cascades are not well characterized. to better elucidate the mode of action of dieldrin in the hypothalamus, this study measured neurotransmitter levels and examined the transcriptomic response in female larg ... | 2010 | 20438755 |
| mercury concentrations in largemouth bass (micropterus salmoides) collected from ash meadows national wildlife refuge, nye county, nevada. | mercury is a known neurotoxin and contaminant of concern worldwide. mercury may occur at elevated concentrations adjacent to industrial sources, such as coal-fired power plants, or in remote environments and newly filled water bodies. mercury tissue concentrations were determined for a sample of largemouth bass (micropterus salmoides) from crystal reservoir, ash meadows national wildlife refuge, nye county, nevada. this investigation was triggered by (1) the presence of several conditions in soi ... | 2011 | 20602096 |
| otolith chemistry of prey fish consumed by a fish predator: does digestion hinder russian doll techniques? | the effect of digestion by a predatory fish (largemouth bass micropterus salmoides) on stable isotopic (delta(13)c and delta(18)o) and trace elemental (sr:ca and ba:ca) compositions of prey fish (bluegill lepomis macrochirus) otoliths was investigated in a laboratory experiment. trace element and stable-isotopic signatures of l. macrochirus otoliths were not significantly altered for up to 16 h after l. macrochirus were consumed by m. salmoides. prey fish otoliths recovered from predator digesta ... | 2009 | 20738510 |
| comparative susceptibility of representative great lakes fish species to the north american viral hemorrhagic septicemia virus sublineage ivb. | the present study compared the susceptibility of representative laurentian great lakes fish species to the emerging viral hemorrhagic septicemia virus (vhsv) genotype ivb. the median lethal dose of infection by intraperitoneal injection (ip-ld50) was obtained from fish that were experimentally infected with the mi03 index strain of vhsv-ivb. fish were injected at doses ranging from 7 x 10(7) to 7 x 10(-2) plaque-forming units (pfu) and maintained at 12 +/- 1 degrees c. the infection trials ident ... | 2010 | 20853739 |
| efficacy of a modified live flavobacterium columnare vaccine in fish. | flavobacterium columnare is an aquatic bacterium that is responsible for columnaris disease. this aquatic pathogen has a worldwide distribution and is highly infectious to both warm and cold water fish. a modified live f. columnare vaccine was developed by repeated passage of a virulent strain on increasing concentrations of rifampicin that resulted in attenuation. here we report vaccination/challenge trials to evaluate efficacy and safety. in separate laboratory trials, immersion vaccination of ... | 2010 | 21059396 |
| cesium accumulation by aquatic organisms at different trophic levels following an experimental release into a small reservoir. | the rates of accumulation and subsequent loss of stable cesium (¹³³cs) by organisms at different trophic levels within plankton-based and periphyton-based food chains were measured following the addition of ¹³³cs into a small reservoir near aiken, south carolina, usa. an uptake parameter u (l kg?¹ d?¹ dry mass) and a loss rate parameter k (d?¹) were estimated for each organism using time-series measurements of ¹³³cs concentrations in water and biota, and these parameters were used to estimate ma ... | 2011 | 21232832 |
| distribution, abundance, and genetic diversity of clinostomum spp. metacercariae (trematoda: digenea) in a modified ozark stream system. | abstract land-use alterations can have profound influences on faunal distributions, including host-parasite relationships. yellow grub trematodes ( clinostomum spp.) have complex life cycles involving 3 hosts: a snail, a fish or amphibian, and a bird. here, we analyze the distribution, prevalence, intensity, abundance, and genetic diversity of encysting metacercariae of clinostomum spp. in salamanders and fishes throughout an aquatic system that includes a natural ozark stream and man-made ponds ... | 2011 | 21506775 |
| largemouth bass (micropterus salmoides) and striped mullet (mugil cephalus) as vectors of contaminants to human consumers in northwest florida. | the health benefits of regular consumption of fish and seafood have been espoused for many years. however, fish are also a potential source of environmental contaminants that have well known adverse effects on human health. we investigated the consumption risks for largemouth bass (micropterus salmoides; n = 104) and striped mullet (mugil cephalus; n = 170), two commonly harvested and consumed fish species inhabiting fresh and estuarine waters in northwest florida. skinless fillets were analyzed ... | 2011 | 21764437 |
| suction feeding mechanics, performance, and diversity in fishes. | despite almost 50 years of research on the functional morphology and biomechanics of suction feeding, no consensus has emerged on how to characterize suction-feeding performance, or its morphological basis. we argue that this lack of unity in the literature is due to an unusually indirect and complex linkage between the muscle contractions that power suction feeding, the skeletal movements that underlie buccal expansion, the sharp drop in buccal suction pressure that occurs during expansion, the ... | 2007 | 21672823 |
| viral encephalopathy and retinopathy outbreak in freshwater fish farmed in italy. | viral encephalopathy and retinopathy (ver), otherwise known as viral nervous necrosis (vnn), is a neuropathological condition affecting > 40 species of fish. although ver affects mainly marine fish, the disease has also been detected in certain species reared in freshwater environments. there are relatively few reports concerning the disease in freshwater species, and there is not much information on clinical signs. nevertheless, the most common clinical findings reported from affected freshwate ... | 2011 | 21991664 |
| influence of behavior and mating success on brood-specific contribution to fish recruitment in ponds. | one source of uncertainty in predicting the response of populations to exploitation is individual differences within a population in both vulnerability to capture and contribution to population renewal. for species with parental care, individuals engaged in nesting behavior are often targeted for exploitation, but predicting outcomes of this nonrandom vulnerability will depend in part on an understanding of how parental traits are related to potential for brood contribution to the population. va ... | 2011 | 22073645 |
| the hinged attachment of teeth in the black bass, micropterus salmoides. | | 2012 | 3171691 |
| a glutamine- and n-acetyl-l-glutamate-dependent carbamyl phosphate synthetase activity in the teleost micropterus salmoides. | | 1997 | 179755 |
| gene regulatory divergence among species estimated by altered developmental patterns in interspecific hybrids. | disturbances in the schedules of gene expression in developing interspecific fish hybrids have been used to draw inferences about the extent of gene regulatory divergence between species and about the degree to which this gene regulatory divergence is correlated with structural gene divergence, as estimated by genetic distance. sperm from each of 10 different species representing six genera within the family centrarchidae was used to fertilize eggs of the florida largemouth bass (micropterus sal ... | 2014 | 3916710 |
| control of transcriptional repression of the vitellogenin receptor gene in largemouth bass (micropterus salmoides) by select estrogen receptors isotypes. | the vitellogenin receptor (vtgr) plays an important role in fish reproduction. this receptor functions to incorporate vitellogenin (vtg), a macromolecule synthesized and released from the liver in the bloodstream, into oocytes where it is processed into yolk. although studies have focused on the functional role of vtgr in fish, the mechanistic control of this gene is still unexplored. here we report the identification and analysis of the first piscine 5' regulatory region of the vtgr gene which ... | 2014 | 25061109 |
| identification and transcriptional modulation of the largemouth bass, micropterus salmoides, vitellogenin receptor during oocyte development by insulin and sex steroids. | fish vitellogenin synthesized and released from the liver of oviparous animals is taken up into oocytes by the vitellogenin receptor. this is an essential process in providing nutrient yolk to developing embryos to ensure successful reproduction. here we disclose the full length vtgr cdna sequence for largemouth bass (lmb) that reveals greater than 90% sequence homology with other fish vtgr sequences. we classify lmb vtgr as a member of the low density lipoprotein receptor superfamily based on c ... | 2012 | 22786822 |
| molecular structure of the largemouth bass (micropterus salmoides) myf5 gene and its effect on skeletal muscle growth. | myogenic regulatory factors (mrfs), a family of basic helix-loop-helix (bhlh) transcription factors, play important roles in regulating skeletal muscle development and growth. myf5, the primary factor of mrfs, initiates myogenesis. its expression pattern during somitomyogenesis in some fish has been revealed. to further study its effect on fish muscle during postembryonic growth, characterization and function analysis of myf5 cdna were carried out in largemouth bass. the 1,093 bp cdna sequence w ... | 2008 | 18752038 |
| the bass parasites of oneida lake, 80 years later. | a survey of largemouth (micropterus salmoides) and smallmouth bass (micropterus dolomieu) parasite communities in oneida lake, new york, was conducted in the summer of 2012 and compared to an earlier survey conducted by van cleave and mueller during the summers of 1929 to 1931. the component helminth communities between surveys were 31% similar in composition for largemouth and 28% similar for smallmouth bass. between species, the component helminth communities were considerably more similar in ... | 2015 | 26001048 |
| epidemiology of columnaris disease affecting fishes within the same watershed. | in the southeastern usa, columnaris disease (caused by flavobacterium columnare) typically affects catfish raised in earthen ponds from early spring until late summer. recently, unusually severe outbreaks of columnaris disease occurred at the e. w. shell fisheries center located in auburn, al, usa. during these outbreaks, catfish and other aquaculture and sport fish species that were in ponds located within the same watershed were affected. our objective was to investigate the genetic diversity ... | 2014 | 24991846 |
| whole-genome analysis of a novel fish reovirus (msrev) discloses aquareovirus genomic structure relationship with host in saline environments. | aquareoviruses are serious pathogens of aquatic animals. here, genome characterization and functional gene analysis of a novel aquareovirus, largemouth bass micropterus salmoides reovirus (msrev), was described. it comprises 11 dsrna segments (s1-s11) covering 24,024 bp, and encodes 12 putative proteins including the inclusion forming-related protein ns87 and the fusion-associated small transmembrane (fast) protein ns22. the function of ns22 was confirmed by expression in fish cells. subsequentl ... | 2015 | 26247954 |
| outbreaks of ulcerative disease associated with ranavirus infection in barcoo grunter, scortum barcoo (mcculloch & waite). | in 2013, an outbreak of ulcerative disease associated with ranavirus infection occurred in barcoo grunter, scortum barcoo (mcculloch & waite), farms in thailand. affected fish exhibited extensive haemorrhage and ulceration on skin and muscle. microscopically, the widespread haemorrhagic ulceration and necrosis were noted in gill, spleen and kidney with the presence of intracytoplasmic eosinophilic inclusion bodies. when healthy barcoo grunter were experimentally challenged via intraperitoneal an ... | 2017 | 28111768 |
| involvement of the pi3k and erk signaling pathways in largemouth bass virus-induced apoptosis and viral replication. | increased reports demonstrated that largemouth bass, micropterus salmoides in natural and artificial environments were always suffered from an emerging iridovirus disease, largemouth bass virus (lmbv). however, the underlying mechanism of lmbv pathogenesis remained largely unknown. here, we investigated the cell signaling events involved in virus induced cell death and viral replication in vitro. we found that lmbv infection in epithelioma papulosum cyprini (epc) cells induced typical apoptosis, ... | 2014 | 25260912 |
| development and characterization of a largemouth bass cell line. | abstract the development and characterization of a new cell line, derived from the ovary of largemouth bass micropterus salmoides, is described. gonad tissue was collected from largemouth bass that were electrofished from oneida lake, new york. the tissue was processed and grown in culture flasks at approximately 22°c for more than 118 passages during an 8-year period from 2004 to 2011. the identity of these cells as largemouth bass origin was confirmed by sequencing a portion of the cytochrome ... | 2014 | 25229492 |
| identification, molecular cloning of il-1β and its expression profile during nocardia seriolae infection in largemouth bass, micropterus salmoides. | in the present study, il-1β cdna was identified and analyzed from largemouth bass (micropterus salmoides). full length il-1β mrna was obtained using rapid amplification of cdna ends (race), which contains 78 bp 3'-utr, a 455 bp 5'-utr, and an open reading frame (orf) of 702 bp coding for 233 amino acid residues. the molecular weight and theoretical isoelectric point of largemouth bass il-1β protein was predicted to be 26.7 kda and 6.08 respectively. a largemouth bass il-1β phylogenetic analysis ... | 2016 | 27706080 |
| de novo transcriptome analysis of differential functional gene expression in largemouth bass (micropterus salmoides) after challenge with nocardia seriolae. | largemouth bass (micropterus salmoides) are common hosts of an epizootic bacterial infection by nocardia seriolae. we conducted transcriptome profiling of m. salmoides to understand the host immune response to n. seriolae infection, using the illumina sequencing platform. de novo assembly of paired-end reads yielded 47,881 unigenes, the total length, average length, n50, and gc content of which were 49,734,288, 1038, 1983 bp, and 45.94%, respectively. annotation was performed by comparison again ... | 2016 | 27529219 |
| organochlorine pesticides and thiamine in eggs of largemouth bass and american alligators and their relationship with early life-stage mortality. | thiamine deficiency has been linked to early mortality syndrome in salmonids in the great lakes. this study was conducted to compare thiamine concentrations in american alligators (alligator mississippiensis) and florida largemouth bass (micropterus salmoides floridanus) eggs from sites with high embryo mortality and high exposure to organochlorine pesticides (ocps) (lakes apopka and griffin, and emeralda marsh, florida, usa) to those from sites that have historically exhibited low embryo mortal ... | 2004 | 15650100 |
| experimental acidification of little rock lake (wisconsin): fish research approach and early responses. | one goal of research at little rock lake, wisconsin, is to enhance understanding of lake acidification effects on warm- and cool-water fishery resources. the little rock lake fish assemblage is characteristic of many acid sensitive waters in north america and is dominated by yellow perch (percidae) and sunfishes (centrarchidae). analyses of reproduction, early survival and growth rates in the field were designed around the differing reproductive modes of these taxa. complementary laboratory rese ... | 2003 | 2923489 |
| dynamics of nest defense by male centrarchid fish. | field observations were conducted on four species of nesting male centrarchids to determine if guarding males discriminate intruders with respect to their potential threat to the brood, their size or position in the water column, or by the stage of the nest. results demonstrated that bluegill (lepomis macrochirus) and pumpkinseed (l. gibbosus) sunfish were the most frequent intruders and were attacked the most often. nest guarding male largemouth bass (micropterus salmoides) attacked intruders f ... | 1988 | 24896907 |
| potential reservoirs and risk factors for vhsv ivb in an enzootic system: budd lake, michigan. | viral hemorrhagic septicemia virus genotype ivb (vhsv ivb) has caused major, sporadic fish die-offs in the laurentian great lakes region of north america since 2005. presently, factors affecting vhsv ivb persistence in enzootic systems are not well understood. even with annual surveillance, the virus can go undetected for several years after an outbreak before again re-emerging, which suggests that the virus is maintained in the system either below detectable levels or in untested reservoirs. th ... | 2017 | 28166454 |
| characterization of the gut microbiota of three commercially valuable warmwater fish species. | due to the strong influence of the gut microbiota on fish health, dominant bacterial species in the gut are strong candidates for probiotics. this study aimed to characterize the gut microbiota of channel catfish ictalurus punctatus, largemouth bass micropterus salmoides and bluegill lepomis macrochirus to provide a baseline for future probiotic studies. | 2014 | 24529218 |