Age, growth and mortality of karut croaker Johnius carutta Bloch, 1794 off Visakhapatnam, south-east coast of India

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dc.contributor.authorSwamy Kumar, M.
dc.contributor.authorRajeswari, G.
dc.contributor.authorKishore, B.
dc.date.accessioned2016-10-14T08:45:18Z
dc.date.available2016-10-14T08:45:18Z
dc.date.issued2015
dc.description.abstractAge, growth and mortality parameters of karut croaker Johnius carutta were studied using the length data of 3,406 specimens ranging in length from 11 to 24.5 cm, collected from Visakhapatnam coast during January 2008 to December 2009. The von Bertalanffy growth parameters estimated were L∞ = 26.7 cm, annual K= 0.67 y-1, to= -0.1366 and T max (longevity) = 4.3 years. Length attained by the end of the first, second, third and fourth years were estimated as 14.2, 20.3, 23.4 and 25.0 cm respectively. Natural mortality (M) was estimated as 1.10, Total mortality (Z) 2.24 and fishing mortality (F) as 1.14. Exploitation rate (E) was 0.51. The growth performance index (Φ) for J. carutta (sexes pooled) was estimated as 2.679. The fishery was largely (91%) supported by first and second year age groups which are within the length groups from 13.5 to 18.9 cm.en_US
dc.identifier.citationIndian Journal of Fisheries 2015:62 (1): 124-127en_US
dc.identifier.urihttp://hdl.handle.net/123456789/2324
dc.language.isoenen_US
dc.publisherIndian Council of Agricultural Researchen_US
dc.subjectAgeen_US
dc.subjectAsymptotic lengthen_US
dc.subjectGrowth coefficienten_US
dc.subjectJohnius caruttaen_US
dc.subjectMortalityen_US
dc.subjectSciaenidsen_US
dc.subjectVisakhapatnamen_US
dc.titleAge, growth and mortality of karut croaker Johnius carutta Bloch, 1794 off Visakhapatnam, south-east coast of Indiaen_US
dc.typeArticleen_US
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