Oecologia

, Volume 104, Issue 2, pp 256–258

Avoidance of post-coital cannibalism in the brachyurid paddle crab Ovalipes catharus

  • Malcolm Haddon
Original Paper

Abstract

Sexual cannibalism was examined experimentally in the New Zealand paddle crab Ovalipes catharus, where it is the female that risks cannibalism during and after sexual activity. In this species copulation only occurs when the female is soft-shelled after moulting and she is most vulnerable to cannibalism. Male paddle crabs protect and copulate with the females until the females are no longer sexually receptive. Males appear able to identify a female with whom they have recently copulated. After a brief separation, significantly fewer females were cannibalized in cases where a female was returned to her original sexual partner than in those that had exchanged partners. The asymmetry, where females gain some protection during moulting but males receive no such advantage, may, at least partially, explain the skewed sex ratios which are sometimes found in samples of O. catharus from nature.

Key words

Paddle crabs Sexual cannibalism Ovalipes Reproductive strategy 

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References

  1. Arnqvist G (1992) Courtship behaviour and sexual cannibalism in the semi-aquatic fishing spider, Dolomedes fimbriatus (Clerck) (Aranaea: Pisaurideae). J Arachnol 20:222–226Google Scholar
  2. Haddon M (1994) Size-fecundity relationships, mating behaviour, and larval release in the New Zealand paddle crab, Ovalipes catharus (White 1844). NZ J Mar Freshwater Res 28:329–334Google Scholar
  3. Haddon M, Wear RG (1993) Seasonal incidence of egg-bearing in the New Zealand paddle crab Ovalipes catharus (Crustacea: Brachyura), and its production of multiple egg batches. NZ J Mar Freshwater Res 27:287–293Google Scholar
  4. Mansour RA, Lipcius RN (1991) Density-dependent foraging and mutual interference in blue crabs preying upon infaunal clams. Mar Ecol Prog Ser 72:239–246Google Scholar
  5. Pfennig DW, Collins JP (1993) Kinship affects morphogenesis in cannibalistic salamanders. Nature 362:836–838Google Scholar
  6. Smith C (1993) Filial cannibalism as a reproductive strategy in care-giving teleosts? Neth J Zool 42:607–613Google Scholar
  7. Wear RG, Haddon M (1987) Natural diet of the crab Ovalipes catharus (Crustacea, Portunidae) around central and northern New Zealand. Mar Ecol Prog Ser 35:39–49Google Scholar

Copyright information

© Springer-Verlag 1995

Authors and Affiliations

  • Malcolm Haddon
    • 1
  1. 1.Institute of Marine EcologyUniversity of SydneySydneyAustralia

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