The use of Hepatic and Somatic Indices and Histological Information to Characterize the Reproductive Dynamics of Atlantic Sardine Sardina pilchardus from the Portuguese Coast
作者： Cristina Nunes , Alexandra Silva , Eduardo Soares , Konstantinos Ganias
DOI: 10.1080/19425120.2011.556911
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摘要: Abstract Samples of Atlantic sardine Sardina pilchardus (also known as European pilchard) were collected bimonthly from 2004 to 2008 off the central west coast Portugal describe reproductive activity this indeterminate batch-spawning species; compare seasonality somatic growth, condition, and feeding; evaluate differences between sexes. Monthly assessments individual biological information for both males females complemented by histological analysis ovaries during 1 year liver tissues (both sexes) at different times cycle. The temporal patterns gonadosomatic index various indices (most advanced oocyte stage, atresia incidence prevalence, spawning activity) indicated that reproductively active mainly October March residual occurred in remaining months. For sexes, condition (hepatosomatic index, relative weight, amount fat stored) increased ma...
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