| trypanosoma danilewskyi: host specificity and host's effect on morphometrics. | carassius auratus, barbus conhus, danio malabaricus, catostomus commersoni, notropis cornutus, etheostoma caeruleum, and ictalurus nebulosus were susceptible to trypanosoma danilewskyi by intraperitoneal inoculation. trypanosomes isolated from all species of susceptible fishes were infective to goldfish. no trypanosomes were detected in inoculated semotilus atromaculatus, ambloplites rupestris, lepomis gibbosus and perca flavescens. fifty specimens were measured from each of 3 c. auratus, 2 b. c ... | 1984 | 6512642 |
| chromatic dispersion of the ocular media. | measurements of chromatic dispersion of aqueous and vitreous humors, cornea and lens of the eye are sparse and incomplete. the wavelength variation in refractive index of the ocular media of cow, pig, frog (rana pipiens), chicken, rock bass (ambloplites rupestris), albino rat and cat as well as human lenses was determined by means of abbe and pulfrich refractometry. while the humors are somewhat less dispersive than water, the cornea is more dispersive at short wavelengths. in general, the lens ... | 1982 | 6982563 |
| 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 |
| 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 |
| heterogeneity in levels of serum neutralizing antibodies against viral hemorrhagic septicemia virus genotype ivb among fish species in lake st. clair, michigan, usa. | the presence of neutralizing antibodies against viral hemorrhagic septicemia virus (vhsv-ivb) was investigated in sera of 13 fish species collected from lake st. clair, michigan, usa, a vhsv-endemic water body. we tested 297 sera collected may 2004-june of 2010, using a complement-dependent 50% plaque neutralization test (50% pnt). neutralizing antibodies were detected in 23% (67/297) of the samples. the highest overall antibody prevalence (85%, 34/40) and mean positive antibody titer (12,113 ± ... | 2012 | 22493115 |
| novel polymorphic microsatellite loci for distinguishing rock bass (ambloplites rupestris), roanoke bass (ambloplites cavifrons), and their hybrids. | the rock bass (ambloplites rupestris) is a popular sport-fish native to the mississippi and great lakes basins of north america. the species has been widely introduced outside its native range, including into atlantic-slope streams of virginia where it may hybridize with an imperiled, similar-looking congener, the roanoke bass (ambloplites cavifrons). in this study, we identified and evaluated novel molecular markers to facilitate identification of these species and study the extent of hybridiza ... | 2016 | 27485592 |
| does angling technique selectively target fishes based on their behavioural type? | recently, there has been growing recognition that fish harvesting practices can have important impacts on the phenotypic distributions and diversity of natural populations through a phenomenon known as fisheries-induced evolution. here we experimentally show that two common recreational angling techniques (active crank baits versus passive soft plastics) differentially target wild largemouth bass (micropterus salmoides) and rock bass (ambloplites rupestris) based on variation in their behavioura ... | 2015 | 26284779 |
| the abiotic and biotic factors limiting establishment of predatory fishes at their expanding northern range boundaries in ontario, canada. | there is a poor understanding of the importance of biotic interactions in determining species distributions with climate change. theory from invasion biology suggests that the success of species introductions outside of their historical ranges may be either positively (biotic acceptance) or negatively (biotic resistance) related to native biodiversity. using data on fish community composition from two survey periods separated by approximately 28 years during which climate was warming, we examine ... | 2015 | 25556555 |
| historical process lead to false genetic signal of current connectivity among populations. | identification of the effects of historical processes on spatial genetic variation is of major importance in landscape genetics, especially in recent systems where the signal of recent isolation is often hardly perceptible. the goal of this study was to assess how differences in colonization patterns could influence spatial genetic variation using two centrarchidae species, the pumpkinseed sunfish (lepomis gibbosus) and the rock bass (ambloplites rupestris), from two adjacent drainage systems. t ... | 2011 | 22388987 |
| effects of incremental increases in silt load on the cardiovascular performance of riverine and lacustrine rock bass, ambloplites rupestris. | rock bass (ambloplites rupestris) are a widespread centrarchid species with both riverine and lacustrine populations. after precipitation events, rivers often carry elevated silt loads, where as lakes generally remain free from suspended silt and sediment. to examine the physiological effects of silt on rock bass, we conducted a series of experiments using fish from lake opinicon and the grand river in ontario. ultrasonic doppler flow probes were surgically affixed around the ventral aorta to mo ... | 2004 | 14720485 |
| climate response among growth increments of fish and trees. | significant correlations were found among the annual growth increments of stream fish, trees, and climate variables in the ozark region of the united states. the variation in annual growth increments of rock bass (ambloplites rupestris) from the jacks fork river was significantly correlated over 22 years with the ring width of four tree species: white oak (quercus alba), post oak (quercus stellata), shortleaf pine (pinus echinata) and eastern red cedar (juniperus virginiana). rock bass growth an ... | 1995 | 28307582 |
| 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 |
| visual responses of nucleus corticalis neurons in the perciform teleost, northern rock bass (ambloplites rupestris rupestris). | | 1982 | 7066681 |
| in vivo and in vitro studies on the host specificity of trypanoplasma salmositica. | the host specificity of trypanoplasma salmositica was studied by experimental inoculation into 13 species of common teleosts (notropis cornutus, notropis heterolepis, notropis spiloperus, nocomis biguttatus, rhinichthys atratulus, semotilus atromaculatus, carassius auratus, ambloplites rupestris, lepomis gibbosus, etheostoma nigrum, hypentelium nigricans, ictalurus melas, and eucalia inconstans). t. salmositica was not recovered at 14 and 40 days post inoculation. however, large numbers of the p ... | 1980 | 7431516 |
| accommodation in the northern rock bass (ambloplites rupestris rupestris) in response to natural stimuli. | | 1973 | 4763518 |