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http://krishi.icar.gov.in/jspui/handle/123456789/58477
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DC Field | Value | Language |
---|---|---|
dc.contributor.author | Fernandez,Irene | - |
dc.contributor.author | Devaraj,M | - |
dc.date.accessioned | 2021-08-18T09:33:18Z | - |
dc.date.available | 2021-08-18T09:33:18Z | - |
dc.date.issued | 1996 | - |
dc.identifier.citation | Not Available | - |
dc.identifier.uri | http://krishi.icar.gov.in/jspui/handle/123456789/58477 | - |
dc.description | Not Available | en_US |
dc.description.abstract | The fishery for the Bombay duck, (Harpodon nehereus) along the northwest coast of India was studied from the data for the annual catch, effort and length- at-age composition for the period 1947 to 1986. Three models, viz., the Beverton and Holt analytical model, Cushing’s stock-recruitment relation, the surplus production models of Schaefer and of Fox and the prediction model of Roff were applied to dEscribe the state of the stock. The length growth parameters; L0 ranged from 37.45 cm (1985) to 60.97 cm (1958), annual k ranged from 0.29 (1958) t0 0.77 (1948) and t, ranged from —0.12 year (1948) to 0.06 year (1985), while the weight growth parameters; W0 ranged from 319.14 g (1948) to 1,910.65 g (1950-51), annual k ranged from 0.26 (1984 and 1985) to 0.85 (1948) and t, ranged from —0.08 year (1948) to 0.03 (1950-51). The length at first capture, l, was 3.00 cm (t0 = 0.13 year) while the length at recruitment, lr was 2.00 cm (tr = 0.08 year). Total annual mortality, Z, ranged from 2.32 (1985) to 8.29 (1948), natural mortality, M, ranged from 0.93 (1950-51) to 1.20 (1948- ‘49) while fishing mortality, F, ranged from 1.32 (1985) to 2.70(1983). Cohort analysis indicated maximum F at 4+age group in 1983 (=2.70) and at 3+ age group in 1984 (=1.77). The stock-recruitment data indicated a linear relation with density dependence (b) ranging from 0.32 to 1.03 with an average of 0.68. The MSY estimated according to the analytical model was found to be 189,844 t which according to the Schaefer and Fox models was 101,158 t and 103,483 t respectively. The prediction model indicated an estimated catch of 92,189 t in the year 2000 if the effort remained a constant. | en_US] |
dc.description.sponsorship | Not Available | - |
dc.language.iso | English | - |
dc.publisher | ICAR/CMFRI | en_US |
dc.relation.ispartofseries | Not Available | - |
dc.subject | Bombay duck | en_US |
dc.subject | population dynamics | en_US |
dc.subject | north west coast | en_US |
dc.title | Dynamics of the Bombay duck (Harpodon nehereus) stock along the northwest coast of India | en_US |
dc.title.alternative | Not Available | - |
dc.type | Article | - |
dc.publication.projectcode | Not Available | - |
dc.publication.journalname | Indian Journal of Fisheries | - |
dc.publication.volumeno | 43 | - |
dc.publication.pagenumber | 44501 | - |
dc.publication.divisionUnit | Not Available | - |
dc.publication.sourceUrl | http://eprints.cmfri.org.in/227/1/2__Dynamics_of_the_Bombay_duck_(Harpodon_nehereus)stock_along_the_northwest_coast_of_India.pdf | - |
dc.publication.authorAffiliation | Not Available | - |
dc.ICARdataUseLicence | Not Available | en_US |
dc.publication.submitter | krishi.admin2@icar.gov.in | - |
Appears in Collections: | FS-CMFRI-Publication |
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