Biology of Octopus vulgaris off the east coast of South Africa

Biology of Octopus vulgaris off the east coast of South Africa 227 65 65 1 1 M. J. Smale P. R. Buchan Oceanographic Research Institute South African Association for Marine Biological Research 4001 Durban South Africa Port Elizabeth Museum P.O. Box 13147 6013 Humewood South Africa Abstract The biology of Octopus vulgaris Cuvier inhabiting subtropical littoral reefs off the east coast of South Africa was investigated. Analyses of stomach contents and lair middens revealed that the mussel Perna perna was the dominant food organism. Growth rate of captive individuals was higher than has previously been recorded but food conversion was lower. Females became sexually mature at 900 g which is estimated to be attained in 3.6 months. Males became sexually mature at 400 g, which is estimated to be attained after 3 months. Results indicate that females live for 9–12 months and have the potential to reach 4 000 g in 240 d while males live for about 12–15 months and have the potential to achieve 4 000 g in 290 d. Mating and breeding occurred throughout the year although evidence for the seasonal migration of females is presented and discussed in relation to breeding and feeding behaviour. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Marine Biology Springer Journals

Biology of Octopus vulgaris off the east coast of South Africa

Marine Biology, Volume 65 (1) – Nov 1, 1981

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Publisher
Springer Journals
Copyright
Copyright © 1981 by Springer-Verlag
Subject
Life Sciences; Biomedicine general; Oceanography; Ecology; Microbiology; Zoology
ISSN
0025-3162
eISSN
1432-1793
D.O.I.
10.1007/BF00397061
Publisher site
See Article on Publisher Site

Abstract

227 65 65 1 1 M. J. Smale P. R. Buchan Oceanographic Research Institute South African Association for Marine Biological Research 4001 Durban South Africa Port Elizabeth Museum P.O. Box 13147 6013 Humewood South Africa Abstract The biology of Octopus vulgaris Cuvier inhabiting subtropical littoral reefs off the east coast of South Africa was investigated. Analyses of stomach contents and lair middens revealed that the mussel Perna perna was the dominant food organism. Growth rate of captive individuals was higher than has previously been recorded but food conversion was lower. Females became sexually mature at 900 g which is estimated to be attained in 3.6 months. Males became sexually mature at 400 g, which is estimated to be attained after 3 months. Results indicate that females live for 9–12 months and have the potential to reach 4 000 g in 240 d while males live for about 12–15 months and have the potential to achieve 4 000 g in 290 d. Mating and breeding occurred throughout the year although evidence for the seasonal migration of females is presented and discussed in relation to breeding and feeding behaviour.

Journal

Marine BiologySpringer Journals

Published: Nov 1, 1981

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