Seasonal prevalence and intensity of follicular atresia in Baltic cod Gadus morhua callarias L

Publication: Research - peer-reviewJournal article – Annual report year: 2008

View graph of relations

In the present study, 307 ovaries of eastern Baltic cod Gadus morhua callarias sampled during the prespawning and spawning season 2000 were analysed histologically to estimate the seasonal prevalence and intensity of atresia. The number of atretic oocytes per ovary was estimated using a combination of the physical disector method and volume fraction (Delesse principle). Atretic oocytes were observed in 32% of the ovaries. Prevalence of atresia was independent of female size, but increased significantly with declining female condition from prespawning and through the spawning stages. The relative intensity of atresia, i.e. number of atretic oocytes in relation to normally developed vitellogenic oocytes, was low amounting to 1.4% on average. Similar to prevalence, relative intensity of atresia differed significantly between maturity stages and increased with decreasing female condition. The population egg loss due to atresia amounted to 4.6% indicating that Baltic cod was performing close to maximum productivity, i.e. potential egg production. (c) 2008 The Authors Journal compilation (c) 2008 The Fisheries Society of the British Isles.
Original languageEnglish
JournalJournal of Fish Biology
Publication date2008
Volume72
Issue4
Pages831-847
ISSN0022-1112
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 16
Download as:
Download as PDF
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
PDF
Download as HTML
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
HTML
Download as Word
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
Word

ID: 3290308