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Observations on the influence of temperature on the length of embryonic development in Octopus vulgaris (Senegal)

Published online by Cambridge University Press:  15 March 1999

Alain Caverivière ,
François Domain  and
Anis Diallo
Alain Caverivière
Affiliation:
Institut de recherche pour le développement (IRD), BP 1386, Dakar, Sénégal
François Domain
Affiliation:
Institut de recherche pour le développement (IRD), BP 1386, Dakar, Sénégal
Anis Diallo
Affiliation:
CRODT, IBP 2241, Dakar, Sénégal
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Abstract

Observations were made in Senegal between 1997−1998 on the length of embryonic development in Octopus vulgaris. The data were from eggs which had been laid by two females in the open sea and fourteen females in concrete tanks. The observations in natural surroundings are the first concerning this species. Hatching occurred after 15−42 d at 27 °C, 29−49 d at 22−23 °C, 57−65 d at 21 °C and 80−87 d at 17 °C. These values are higher than the few data previously recorded in European aquariums, particularly for temperatures under 20 °C.

Keywords

Cephalopodspawningembryonic developmentembryoshatchingWest Africa
Type
Research Article
Information
Aquatic Living Resources , Volume 12 , Issue 2 , March 1999 , pp. 151 - 154
Copyright
© Elsevier, IRD, Inra, Ifremer, Cemagref, CNRS, 1999

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