Size variability and natural mortality dynamics of anchovy Engraulis japonicus eggs under high fishing pressure
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چکیده
منابع مشابه
Structure and spectral sensitivity of photoreceptors of two anchovy species: Engraulis japonicus and Engraulis encrasicolus
The morphology, fine structure and spectral sensitivity of retinal photoreceptors of two anchovy species were investigated using light and electron microscopy and microspectrophotometry. Distinct regional specialisation of cones was observed. Long and short (bilobed) cones were observed in the horizontal retinal belt, including the nasal and temporal retinal zones. Only triple cones with two lo...
متن کاملPolymorphic microsatellite loci for the Japanese anchovy Engraulis japonicus (Engraulidae).
We isolated and characterized 14 polymorphic microsatellite loci in the Japanese anchovy (Engraulis japonicus) using a (GT)(13)-enriched genomic library. The numbers of alleles per locus ranged from 6 to 31, with a mean of 17.8. The observed and expected heterozygosities ranged from 0.180 to 0.949 and from 0.172 to 0.966, with means of 0.731 and 0.825, respectively. All 14 loci were in Hardy-We...
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It is well known that temporal fluctuations in small populations deeply influence evolutionary potential. Less well known is whether fluctuations can influence the evolutionary potentials of species with large census sizes. Here, we estimated genetic population parameters from as survey of polymorphic microsatellite DNA loci in archived otoliths from Adriatic European anchovy (Engraulis encrasi...
متن کاملCharacterization of Leuconostoc strains isolated from fresh anchovy (Engraulis anchoita).
The biomass value of anchovy (Engraulis anchoita), the most abundant fi sh species in the Southwest Atlantic Ocean, is considered to be around 4,300,000 tons, with a maximum sustainable yield of 1,140,000 tons (Cabrer et al., 2002), being at present under exploited at 27,800 tons/year (SAGPyA, 2008). Recently, as part of the FAO’s project Towards a Sustainable Aquaculture: Selected Issues and G...
متن کاملThree cone opsin genes determine the properties of the visual spectra in the Japanese anchovy, Engraulis japonicus (Engraulidae, Teleostei).
A complement of cone visual pigments was identified in the Japanese anchovy Engraulis japonicus, one of the engraulid fish species that has a retina specialized for polarization and color vision. The nature of the chromophore bound to opsin proteins was investigated using high performance liquid chromatography. The opsin genes were then cloned and sequenced, and the absorption spectra of differ...
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 2012
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps09795