Verification and application of Target Strength for Japanese anchovy (Engraulis japonicas) by theoretical acoustic scattering model
نویسندگان
چکیده
منابع مشابه
Polymorphic 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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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...
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Effect of the depth-dependent target strength (TS) on biomass estimation of Japanese ahcovy was examined by using following four TS models: (1) TS = 20logLt-71.9, (2) TS = 20logLt-72.5, (3) TS = 20logLt-(20/3)log(1+z/10)-67.6 and (4) TS = 20logLt-(20/3)log(1+z/10)-64.7, where Lt and z represent total length (cm) and depth (m), respectively. (1) and (2) have been used in conventional fisheries r...
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با توجه به تحریم های بین المملی علیه صنعت بیمه ایران امکان استفاده از بازارهای بین المملی بیمه ای برای نفتکش های ایرانی وجود ندارد. از طرفی از آنجایی که یکی از نوآوری های اخیر استفاده از بازارهای مالی به منظور ریسک های فاجعه آمیز می باشد. از اینرو در این پایان نامه سعی شده است با استفاده از این نوآوری ها با طراحی اوراق اختیارات راهی نو جهت بیمه گردن نفت کش های ایرانی ارائه نمود. از آنجایی که بر...
Characterization 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...
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ژورنال
عنوان ژورنال: Journal of the Korean society of Fisheries Technology
سال: 2012
ISSN: 1225-827X
DOI: 10.3796/ksft.2012.48.4.487