| enzyme heterozygosity associated with anatomical character variance and growth in the herring (clupea harengus l.). | the hypothesis that enzyme heterozygosity is positively related to phenotypic characteristics in fish was tested using five polymorphic enzyme loci and seven anatomical characteristics in samples of north irish sea herring, clupea harengus. though not unambiguous the results indicated that heterozygosity was associated with increased developmental stability. also, multiple homozygosity was negatively correlated with growth parameter estimates. though no single locus correlates were evident, the ... | 1985 | 4019216 |
| on the application of immunological techniques in geographic group studies of atlantic sea herring, clupea harengus. ii. herring serum analysis by gel diffusion. | | 1969 | 4984471 |
| on the application of immunological techniques in geographic group studies of atlantic sea herring, clupea harengus. i. neutralization of immune precipitins as an aid to herring serum analysis by immunoelectrophoresis. | | 1966 | 5962947 |
| on the occurrence and morphology of gyrodactylus pterygialis from saithe pollachius virens in a norwegian fjord. | a total of 308 pollachius virens from a fjord near bergen, western norway, were examined for gyrodactylus pterygialis over a 14-mo period; g. pterygialis showed the highest prevalence and density in winter/spring (november, january, march, and april pooled) but was absent in some months (august, september, and november). the morphology of the opisthaptoral hard parts of g. pterygialis were studied throughout the survey, and their variation is discussed with respect to host species, host locality ... | 1994 | 7799167 |
| aquatic pollution-induced immunotoxicity in wildlife species. | the potential for chemicals to adversely affect human immunologic health has traditionally been evaluated in rodents, under laboratory conditions. these laboratory studies have generated valuable hazard identification and immunotoxicologic mechanism data; however, genetically diverse populations exposed in the wild may better reflect both human exposure conditions and may provide insight into potential immunotoxic effects in humans. in addition, comparative studies of species occupying reference ... | 1997 | 9193919 |
| impaired cellular immune response in rats exposed perinatally to baltic sea herring oil or 2,3,7,8-tcdd. | while the immunotoxicity of 2,3,7,8-tetrachlorodibenzo-p-dioxin (tcdd) has been well established, the effects of complex environmental mixtures of polyhalogenated aromatic hydrocarbons (phahs) are poorly understood. many phahs, including the polychlorinated-biphenyls (pcbs), -dibenzofurans (pcdfs), and dibenzo-p-dioxins (pcdds), possess 'dioxin-like' activities, and accumulate in the aquatic food chain. organisms occupying high trophic levels may therefore be exposed to concentrations which may ... | 1997 | 9285039 |
| contaminant-induced immunosuppression and mass mortalities among harbor seals. | virus-associated mass mortalities among seals inhabiting northwestern europe have generated an interest in immunotoxicology in this species. a morbillivirus has been isolated from victims, but a contribution of immunotoxic contaminants to the severity of the outbreaks could not be ruled out. fish-eating seals occupy high trophic levels in the aquatic food chain, and accumulate high levels of contaminants including polychlorinated biphenyls (pcbs), polychlorinated dibenzo-p-dioxins (pcdds), and p ... | 2000 | 10720747 |
| haplotype frequency distribution and discriminatory power of two mtdna fragments in a marine pelagic teleost (atlantic herring, clupea harengus). | two regions of the mtdna of atlantic herring (clupea harengus), nd3/4 and nd5/6, were surveyed by rflp analysis to assess the effects of marker variability on the power of statistical tests. although haplotype diversity was similar, marked differences in the number of common haplotypes were observed between the two regions, with nd3/4 having a more even distribution of haplotype frequencies. nd3/4 also revealed higher differentiation among samples than nd5/6, similar to previously published micr ... | 2001 | 11903557 |
| sequential pathology after experimental infection with marine viral hemorrhagic septicemia virus isolates of low and high virulence in turbot (scophthalmus maximus l). | three marine viral hemorrhagic septicemia virus isolates were used to bath challenge turbot with the purpose of studying mortality and the pathology and antigen distribution over time. two high-virulence isolates, 860/94, 4p168 and a low-virulence isolate 1p3 from a baltic sea herring were used. organ samples were collected sequentially at 2, 4, 7, 10, 15, 20, 25, and 45 days postinfection. specimens were processed for virology, histopathology, and immunohistochemistry. organs during the early s ... | 2005 | 15657267 |
| subchronic toxicity of baltic herring oil and its fractions in the rat (iii) bone tissue composition and dimension, and ratio of n-6/n-3 fatty acids in serum phospholipids. | changes in total bone mineral density determined by the bone-ash method were recently demonstrated in rats, exposed to herring oil from the contaminated southern part of the baltic sea. in the present study more detailed analysis of bone structure and biomechanics was performed and obtained results were evaluated in the context of dietary factors, such as polyunsaturated fatty acids, vitamin d and vitamin a. baltic sea herring oil was fractionated into one relatively pollutant-free fraction (f1) ... | 2005 | 15910409 |
| redescriptions of two species of microcotylid monogeneans from three arripid hosts in southern australian waters. | microcotyle arripis sandars, 1945 is redescribed from arripis georgianus from four localities: spencer gulf, gulf st. vincent, off kangaroo island and coffin bay, south australia, australia. kahawaia truttae (dillon & hargis, 1965) lebedev, 1969 is reported from a. trutta off bermagui, new south wales and is redescribed from a new host, a. truttaceus, from four localities in south australian waters: spencer gulf, gulf st. vincent, off kangaroo island and coffin bay. phylogenetic analysis of the ... | 2010 | 20532853 |
| polychlorinated biphenyls (pcbs) contamination and aryl hydrocarbon receptor (ahr) agonist activity of omega-3 polyunsaturated fatty acid supplements: implications for daily intake of dioxins and pcbs. | omega-3 polyunsaturated fatty acid (n-3 pufa) rich oils derived primarily from fish are frequently consumed as supplements. due to the tendency of persistent organic pollutants (pops) to accumulate in exposed organisms, n-3 pufa supplements can contain sufficient pops to present a risk to consumers. here we investigated pcb concentrations and aryl hydrocarbon receptor (ahr) agonist activity in 17 n-3 pufa supplements available in canada. pcbs ranged from <0.8 to 793 ng g(-1) oil, with salmon- an ... | 2010 | 20692313 |
| modeling relationships between baltic sea herring (clupea harengus) biology and contaminant concentrations using multivariate data analysis. | baltic sea herring (clupea harengus) is a pelagic, zoo-planktivorous fish and young (2-5 years old) individuals of this species are sampled annually in the swedish marine monitoring program. this study determined concentrations of organochlorines (ocs) and brominated flame retardants (bfrs) in dorsal muscle from herring (n = 60) of varying age (2-13 years), weight (25-200 g), and body length (16-29 cm) caught at three locations in the swedish part of the baltic proper. in order to ensure that th ... | 2010 | 21049924 |
| interacting trophic forcing and the population dynamics of herring. | small pelagic fish occupy a central position in marine ecosystems worldwide, largely by determining the energy transfer from lower trophic levels to predators at the top of the food web, including humans. population dynamics of small pelagic fish may therefore be regulated neither strictly bottom-up nor top-down, but rather through multiple external and internal drivers. while in many studies single drivers have been identified, potential synergies of multiple factors, as well as their relative ... | 2011 | 21870614 |
| molecular characterization of anisakid nematode larvae from 13 species of fish from western australia. | this study characterized anisakid nematodes in estuarine and near-shore species of fish in southern western australia. a total of 108 fish representing 13 species were examined for anisakid larvae. for the molecular characterization of anisakid larvae (n=218), we used pcr-coupled mutation scanning-sequencing-phylogenetic analyses of sequence variation in the internal transcribed spacers of nuclear ribosomal dna. with the exception of sillaginoides punctatus and sillago schomburgkii, all the fish ... | 2012 | 23353682 |
| metazoan parasites from herring (clupea harengus l.) as biological indicators in the baltic sea. | zoographical distribution of metazoan fish parasites in herring, clupea harengus, from the baltic sea was analysed in order to use them as potential biological indicators. a total of 210 herring from six different sampling sites were investigated, harbouring 12 different parasite species [five digeneans (d), one cestode (c), three nematodes (n) and three acanthocephalans (a)]. the distribution of the parasite species differed according to region, with a distinct gradient of decreasing species ri ... | 2014 | 25119368 |
| [comparative parasitological analysis of white sea herring fry (clupea pallasi n. maris-albi) raised experimentally and caught at sea]. | dynamics of the infection with pathogen trematodes of brachyphallus crenatus (rud., 1802) and lecithaster gibbosus (rud., 1802) in larvae and juvenile herring reared in experimental conditions and in those which were caught in the sea has been observed. simultaneous infection of juvenile herring in natural environments and in experimental conditions has been noted. the parasitological examination of the material suggests the degree of natural mortality of larvae in the sea. the total rate of the ... | 2007 | 4047716 |
| temporal trends and geographical differences of perfluoroalkyl acids in baltic sea herring and white-tailed sea eagle eggs in sweden. | temporal and spatial trends of perfluoroalkyl acids (pfaas) were investigated in baltic sea herring liver (clupea harengus) from three sites, and white-tailed sea eagle (wtse) eggs (haliaeetus albicilla) from two freshwater and two marine areas in sweden. trends of most quantifiable pfaas increased over the monitored period (1980-2014 in herring, 1960s/1980s-2010 in wtse). no significant decreasing trends were observed for the most recent ten years for any substances, except perfluorooctane sulf ... | 2016 | 27775331 |
| characteristics of the energy metabolism of the white sea herring clupea pallasii marisalbi berg (clupeiformes, clupeidae) of onega bay, dvina bay, and kandalaksha bay of the white sea. | the activity of the enzymes of the energy and carbohydrate metabolisms (cytochrome-c oxidase, l-lactate dehydrogenase, aldolase, and glycerol-1-phosphate dehydrogenase) have been studied in white sea herring (the 1+, 2+, and 3+ age groups) sampled in onega bay, dvina bay, and kandalaksha bay of the white sea. the bays differ in the hydrological regime, ecological and feeding conditions. the individual variability of the enzyme activity was the largest in the herring of the age 1+. the flexibilit ... | 2016 | 27595825 |
| population genomic evidence for adaptive differentiation in the baltic sea herring. | detecting and estimating the degree of genetic differentiation among populations of highly mobile marine fish having pelagic larval stages is challenging because their effective population sizes can be large, and thus, little genetic drift and differentiation is expected in neutral genomic sites. however, genomic sites subject to directional selection stemming from variation in local environmental conditions can still show substantial genetic differentiation, yet these signatures can be hard to ... | 2016 | 27093194 |
| outlier loci detect intraspecific biodiversity amongst spring and autumn spawning herring across local scales. | herring, clupea harengus, is one of the ecologically and commercially most important species in european northern seas, where two distinct ecotypes have been described based on spawning time; spring and autumn. to date, it is unknown if these spring and autumn spawning herring constitute genetically distinct units. we assessed levels of genetic divergence between spring and autumn spawning herring in the baltic sea using two types of dna markers, microsatellites and single nucleotide polymorphis ... | 2016 | 27050440 |
| lipid status of larvae and adults of the white sea herring clupea pallasii marisalbi berg (clupeiformes, clupeidae). | | 2015 | 25772988 |
| a concept of bayesian regulation in fisheries management. | stochastic variability of biological processes and uncertainty of stock properties compel fisheries managers to look for tools to improve control over the stock. inspired by animals exploiting hidden prey, we have taken a biomimetic approach combining catch and effort in a concept of bayesian regulation (br). the br provides a real-time bayesian stock estimate, and can operate without separate stock assessment. we compared the performance of br with catch-only regulation (cr), alternatively oper ... | 2014 | 25365071 |
| impact of extreme climate and bioinvasion on temporal coupling of spring herring (clupea harengus m.) larvae and their prey. | we used weekly observational data from mid-may to end of july in 1958-2012 in gulf of riga to investigate temporal coupling between spring herring larvae and their first prey - copepod nauplii, under the extreme hydroclimatic conditions. we focused on a small shallow estuary that is important nursery ground for larvae of the gulf of riga (baltic sea) herring population. we quantified the effect of extreme values of the winter air temperatures, time of ice retreat and spring water temperatures on ... | 2014 | 24933435 |
| a new model for simulating growth in fish. | a real dynamic population model calculates change in population sizes independent of time. the beverton & holt (b&h) model commonly used in fish assessment includes the von bertalanffy growth function which has age or accumulated time as an independent variable. as a result the b&h model has to assume constant fish growth. however, growth in fish is highly variable depending on food availability and environmental conditions. we propose a new growth model where the length increment of fish living ... | 2014 | 24498574 |
| [analysis of microsatellite loci variations in herring (clupea pallasii marisalbi) from the white sea]. | the genetic diversity among spawning groups of herring from different parts of the white sea was assessed using ten microsatellite loci. all loci were polymorphic with the expected heterozygosity estimates varying in the range of 12.7-94.1% (mean was 59.5%). the degree of genetic differentiation displayed by white sea herring was statistically significant (theta = 2.03%). the level of pairwise genetic differentiation f(st) was 0-0.085, and it was statistically significant in most of the comparis ... | 2013 | 24450198 |
| next-generation sequencing for molecular ecology: a caveat regarding pooled samples. | we develop a model based on the dirichlet-compound multinomial distribution (cmd) and ewens sampling formula to predict the fraction of snp loci that will appear fixed for alternate alleles between two pooled samples drawn from the same underlying population. we apply this model to next-generation sequencing (ngs) data from baltic sea herring recently published by (corander et al., 2013, molecular ecology, 2931-2940), and show that there are many more fixed loci than expected in the absence of g ... | 2014 | 24304095 |
| high degree of cryptic population differentiation in the baltic sea herring clupea harengus. | marine fish species are characterized by a low degree of population differentiation at putatively neutral marker genes. this has been traditionally attributed to ecological homogeneity and a lack of obvious dispersal barriers in marine habitats, as well as to the large (effective) population sizes of most marine fish species. the herring (clupea harengus) is a case in point - the levels of population differentiation at neutral markers, even across vast geographic areas, are typically very low (f ... | 2013 | 23294045 |
| implications of the divergent use of a suite of estuaries by two exploited marine fish species. | biological characteristics of the marine species king george whiting sillaginodes punctatus and australian herring arripis georgianus in three seasonally open estuaries (broke, irwin and wilson inlets), one permanently open estuary (oyster harbour) and one normally closed estuary (wellstead estuary) on the south coast of western australia have been determined and compared. sillaginodes punctatus enters the seasonally and permanently open estuaries early in life and reaches total lengths (l(t)) > ... | 2011 | 21884106 |
| [genetic variation of azov and black sea herring alosa pontica (eihwald, 1838), (clupeiformes, alosinae) in danube river: analysis of biochemical gene markers]. | genetic variation and structure of danube stock of aloca pontica pontica were investigated during the spawning moving by means of biochemical genetic marking. the level of heterozygosity was hobs = 0,009. it is essentially lower than the average level for populations of other teleostei and clupeidae representatives. polymorphism was defined only for es-d of 20 analyzed loci expressed in muscle tissues. the allele frequencies for this locus were reliably different in the early spawning and later ... | 2012 | 16161412 |
| levels of dioxins in fish and fishery products on the german market. | in 1995-1998 the contents of polychlorinated dibenzodioxins and dibenzofurans of 184 pooled fish samples were analysed. sampling focused on fish and fishery products with a market share of more than 1% and covered all fishing grounds important for the supply of the german market. investigation included 15 different fish species, shrimp, mussel and squid samples and various fishery products, typically on the german market. generally lean fish species like cod, saithe or alaska pollock were less c ... | 2002 | 12431013 |
| monostephanostomum georgianum n. sp. (digenea: acanthocolpidae) from arripis georgianus valenciennes) perciformes: arripidae off kangaroo island, south australia, with comments on monostephanostomum kruse, 1979 and stephanostomum looss, 1899. | monostephanostomum georgianum n. sp. is described from arripis georgianus off kangaroo island, south australia. it differs from its congeners by the presence of a short second row of oral spines. m. manteri kruse, 1979 is reported from a. georgianus off southern western australia and kangaroo island, south australia and a. trutta off northern tasmania. it is considered that the other two species, m. yamagutii ramadan, 1984 and m. krusei reimer, 1983, should probably be removed from this genus. t ... | 2002 | 12378134 |
| [parasite infestation of north sea herring]. | | 1972 | 5072167 |