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  • Journal of the Marine Biological Association of the United Kingdom, Volume 88, Issue 2
  • March 2008, pp. 307-309

Parasitic castration of the stenopodid shrimp Stenopus hispidus (Decapoda: Stenopodidae) induced by the bopyrid isopod Argeiopsis inhacae (Isopoda: Bopyridae)

  • Ricardo Calado (a1), Cátia Bartilotti (a2), Joseph W. Goy (a3) and Maria Teresa Dinis (a1)
  • DOI:
  • Published online: 01 March 2008

The present work reports the existence of parasitic castration induced by the bopyrid isopod Argeiopsis inhacae parasitizing the branchial chamber of female Stenopus hispidus. Parasitized and unparasitized females of S. hispidus displayed similar intermoult periods (14 ± 2 d) and exhibited similar mating behaviours. However, despite exhibiting typical mating behaviour, parasitized females were never able to produce any egg clutch when paired with unparasitized males; neither displayed the typical ‘dorsal bright green spot’ evidencing the presence of large vitellogenic oocytes. The idea that bopyrid infections generally lead to the ‘reproductive death’ of the decapod host is reinforced and the apparent existence of a heavily sex-biased infection towards females in S. hispidus may just be a consequence of the still limited number of surveyed specimens.

Corresponding author
Correspondence should be addressed to: Ricardo CaladoCCMAR Universidade do AlgarveCampus de Gambelas, 8005-139, FaroPortugal email:
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G. Anderson (1990) Postinfection mortality of Palaemonetes spp. (Decapoda: Palaemonidae) following experimental exposure to the bopyrid isopod Probopyrus pandalicola (Packard) (Isopoda: Epicaridea). Journal of Crustacean Biology 10, 284292.

R. Calado , C. Bartilotti and L. Narciso (2005) Short report on the effect of a parasitic isopod on the reproductive performance of a shrimp. Journal of Experimental Marine Biology and Ecology 321, 1318.

R. Calado , A. Vitorino and M.T. Dinis (2006) Bopyrid isopods do not castrate the simultaneous hermaphroditic shrimp Lysmata amboinensis (Decapoda: Hippolytidae). Diseases of Aquatic Organisms 73, 7376.

C.E. Cash and R.T. Bauer (1993) Adaptations of the branchial ectoparasite Probopyrus pandalicola (Isopoda:Bopyridae) for survival and reproduction related to ecdysis of the host, Palemonetes pugio (Caridae: Palaemonidae). Journal of Crustacean Biology 13, 111124.

W.E. Dale and G. Anderson (1982) Comparison of morphologies of Probopyrus bithynis, P. floridensis, and P. pandalicola larvae reared in culture (Isopoda, Epicaridea). Journal of Crustacean Biology 2, 392409.

B. Kensley (1974) Bopyrid Isopoda from southern Africa. Crustaceana 26, 259266.

E.G. Reinhard (1949) Experiments on the determination and differentiation of sex in the bopyrid Stegophryxus hyptius Thompson. Biological Bulletin. Marine Biological Laboratory, Woods Hole 96, 1731.

D. Zhang , J. Lin and R.L. Creswell (1998) Mating behavior and spawning of the banded coral shrimp Stenopus hispidus in the laboratory. Journal of Crustacean Biology 18, 511518.

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Journal of the Marine Biological Association of the United Kingdom
  • ISSN: 0025-3154
  • EISSN: 1469-7769
  • URL: /core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom
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