Comparative potential reproduction and actual production in several species of North American crayfish
Corey, S. (1991). Comparative potential reproduction and actual production in several species of North American crayfish, in: Wenner, A.M. et al. Crustacean egg production. Crustacean Issues, 7: pp. 69-76
In: Wenner, A.M.; Kuris, A.M. (Ed.) (1991). Crustacean egg production. Crustacean Issues, 7. A.A. Balkema: Rotterdam. ISBN 90 6191 098 6. 401 pp., more
In: Schram, F.R. (Ed.) Crustacean Issues = Advances in Crustacean Research. Balkema/CRC Press/Taylor & Francis: Rotterdam. ISSN 0168-6356; e-ISSN 2155-5397, more
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| Abstract |
The reproductive potential (ovarian counts), realized reproduction (abdominal egg counts) actual production (stage III larval counts) and the reproductive efficiency (percent survival to stage III) vary interspecifically and intraspecifically in many species of North American crayfish. The emphasis here is on Orconectes propinquus, O. rustucus and Cambarus robustus.The causes of losses in the mean counts at the various stages of development are frequently a combination of biotic and abiotic factors such as: presence of the internal parasite Crepidos-tomum cornutum, size of female, capacity of the abdomen to protect the developmental stages, infertile eggs, lack of proper attachment of eggs to the pleopods, and growth of larvae and river current speed. |
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