Seasonal variation in the gametogenic ecology of the Antarctic scallop Adamussium colbecki
Seasonal variation in the gametogenic ecology of the Antarctic scallop Adamussium colbecki
Quasi-monthly samples of the Antarctic pectinid bivalve Adamussium colbecki were examined to determine the gametogenic pattern and periodicity. Both female and male gametogenic patterns show a very distinct seasonal development, with the initiation of gametogenesis in October and spawning in late September and early October of the following year. The duration of the gametogenic cycle is unusually short for Antarctic benthos, being 12 months. Reproductive effort (ratio of gonad mass to total tissue mass) is significantly higher in males than females, and males are ready to spawn earlier in the austral winter than females. The digestive gland also shows a strong seasonal cycle but develops earlier than the gonad. We propose that energy from the spring bloom is stored in the digestive gland before being transferred to the gonads. Gonad size, digestive-gland size and, to a lesser extent, adductor-muscle size, are related to adult size in most samples. The length of the gametogenic cycle suggests that reproduction in A. colbecki is more pectinid than Antarctic.
727-733
Tyler, P.A.
d1965388-38cc-4c1d-9217-d59dba4dd7f8
Reeves, S.
65894d15-efa9-4217-9259-3abb294a2982
Peck, L.
007eab63-3fea-4cd8-8c61-9db886247c33
Clark, A.
a0e342fa-5166-481d-84e1-28468fb92ae7
Powell, D.
ceb7f977-506d-479f-a0af-97d8028c332f
2003
Tyler, P.A.
d1965388-38cc-4c1d-9217-d59dba4dd7f8
Reeves, S.
65894d15-efa9-4217-9259-3abb294a2982
Peck, L.
007eab63-3fea-4cd8-8c61-9db886247c33
Clark, A.
a0e342fa-5166-481d-84e1-28468fb92ae7
Powell, D.
ceb7f977-506d-479f-a0af-97d8028c332f
Tyler, P.A., Reeves, S., Peck, L., Clark, A. and Powell, D.
(2003)
Seasonal variation in the gametogenic ecology of the Antarctic scallop Adamussium colbecki.
Polar Biology, 26 (11), .
(doi:10.1007/S00300-003-0548-2).
Abstract
Quasi-monthly samples of the Antarctic pectinid bivalve Adamussium colbecki were examined to determine the gametogenic pattern and periodicity. Both female and male gametogenic patterns show a very distinct seasonal development, with the initiation of gametogenesis in October and spawning in late September and early October of the following year. The duration of the gametogenic cycle is unusually short for Antarctic benthos, being 12 months. Reproductive effort (ratio of gonad mass to total tissue mass) is significantly higher in males than females, and males are ready to spawn earlier in the austral winter than females. The digestive gland also shows a strong seasonal cycle but develops earlier than the gonad. We propose that energy from the spring bloom is stored in the digestive gland before being transferred to the gonads. Gonad size, digestive-gland size and, to a lesser extent, adductor-muscle size, are related to adult size in most samples. The length of the gametogenic cycle suggests that reproduction in A. colbecki is more pectinid than Antarctic.
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Published date: 2003
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Local EPrints ID: 11194
URI: http://eprints.soton.ac.uk/id/eprint/11194
ISSN: 0722-4060
PURE UUID: 1e709d6b-aeb1-4e87-b0b6-cf03bb3fbb17
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Date deposited: 28 Oct 2004
Last modified: 15 Mar 2024 05:03
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Author:
S. Reeves
Author:
L. Peck
Author:
A. Clark
Author:
D. Powell
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