Skip to main content Accessibility help

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)


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 Calado CCMAR Universidade do Algarve Campus de Gambelas, 8005-139, Faro Portugal email:


Hide All
Adkinson, D.L., Heard, R.W. and Clark, G.T. (1982) Description of the male and notes on the female of Argeiopsis inhacae (Crustacea: Isopoda: Bopyridae). Proceedings of the Biological Society of Washington 95, 334337.
Anderson, G. (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.
Boyko, C.B. and Kazmi, Q.B. (2005) A new species of Argeiopsis Kensley, 1974 (Crustacea: Isopoda: Bopyridae: Argeiinae) from the northern Arabian Sea. Zootaxa 1002, 5964.
Calado, R., Bartilotti, C. and Narciso, L. (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.
Calado, R., Vitorino, A. and Dinis, M.T. (2006) Bopyrid isopods do not castrate the simultaneous hermaphroditic shrimp Lysmata amboinensis (Decapoda: Hippolytidae). Diseases of Aquatic Organisms 73, 7376.
Cash, C.E. and Bauer, R.T. (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.
Dale, W.E. and Anderson, G. (1982) Comparison of morphologies of Probopyrus bithynis, P. floridensis, and P. pandalicola larvae reared in culture (Isopoda, Epicaridea). Journal of Crustacean Biology 2, 392409.
Kensley, B. (1974) Bopyrid Isopoda from southern Africa. Crustaceana 26, 259266.
Markham, J.C. (1986) Evolution and zoogeography of the Isopoda Bopyridae, parasites of Crustacea Decapoda. In Gore, R.H. and Heck, K.L. (eds) Crustacean issues 4: crustacean biogeography. Rotterdam: A.A. Balkema, pp. 143164.
O'Brien, J. and Van Wyk, P.M. (1985) Effects of crustacean parasitic castrators (epicaridean isopods and rizocephalan barnacles) on growth of crustacean hosts. In Wenner, A.M. (ed.) Crustacean issues 3: factors in adult growth. Rotterdam: A.A. Balkema, pp. 191218.
Reinhard, E.G. (1949) Experiments on the determination and differentiation of sex in the bopyrid Stegophryxus hyptius Thompson. Biological Bulletin. Marine Biological Laboratory, Woods Hole 96, 1731.
Van Wyk, P.M. (1982) Inhibition of the growth and reproduction of the porcellanid crab Pachycheles rudis by the bopyrid isopod, Aporobopyrus muguensis. Parasitology 85, 459473.
Zhang, D., Lin, J. and Creswell, R.L. (1998) Mating behavior and spawning of the banded coral shrimp Stenopus hispidus in the laboratory. Journal of Crustacean Biology 18, 511518.


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)


Altmetric attention score

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed