Sex differentiation, changes in length, weight and eye size before and after metamorphosis of European eel (Anguilla anguilla L) maintained in captivity
Migrating European eel (Anguilla anguilla L.) glass eels were collected annually in the Garonne Basin (France) during 1987-1989 and subsequently raised under freshwater conditions. In 1990 and 1991 sex differentiation, gonadal development, length/weight and eye size were studied in relation to metam...
| Main Authors: | , , , , |
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| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Elsevier science bv
1997
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| Subjects: | |
| Online Access: | https://lirias.kuleuven.be/handle/123456789/59003 http://gateway.newisiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ScienceDirect&SrcApp=PRODUCT_NAME&KeyAID=S0044848697000197&DestApp=ScienceDirect&SrcAppSID=APP_SID&SrcJTitle=WURS_TITLE |
| Summary: | Migrating European eel (Anguilla anguilla L.) glass eels were collected annually in the Garonne Basin (France) during 1987-1989 and subsequently raised under freshwater conditions. In 1990 and 1991 sex differentiation, gonadal development, length/weight and eye size were studied in relation to metamorphosis from yellow to silver eel stage. Differentiation from intersexual gonads to testes took place after 2 years and was synchronized with metamorphosis. Differentiated ovaries, however, were already present in 2(+) yellow eels indicating that expression of female gonadal sex was not synchronized with metamorphosis. status: published |
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