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EFFECTS OF MICROPHALLUS TURGIDUS (TREMATODA: MICROPHALLIDAE) ON THE PREDATION, BEHAVIOR, AND SWIMMING STAMINA OF THE GRASS SHRIMP PALAEMONETES PUGIO

EFFECTS OF MICROPHALLUS TURGIDUS (TREMATODA: MICROPHALLIDAE) ON THE PREDATION, BEHAVIOR, AND... The effect of the trematode Microphallus turgidus on its second intermediate host, the grass shrimp, Palaemonetes pugio, was tested. To do so, we measured the susceptibility of infected and uninfected shrimp to predation by the mummichog, Fundulus heteroclitus. Shrimp behavior was compared in the presence and absence of a fish predator, and the swimming stamina and backthrust escape responses of infected and uninfected shrimp were measured. Infected shrimp were more likely to be eaten by a predator than uninfected shrimp, had lower swimming stamina, and spent more time swimming and less time motionless in the presence of a predator. There was no difference between backthrust distances traveled in response to a stimulus by either infected or uninfected shrimp. Thus, M. turgidus may increase the predation of P. pugio in the wild, possibly by affecting the swimming stamina and predator avoidance responses of the shrimp. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The Journal of Parasitology Allen Press

EFFECTS OF MICROPHALLUS TURGIDUS (TREMATODA: MICROPHALLIDAE) ON THE PREDATION, BEHAVIOR, AND SWIMMING STAMINA OF THE GRASS SHRIMP PALAEMONETES PUGIO

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The Journal of Parasitology , Volume 90 (3): 5 – Jun 2, 2004
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References (18)

Publisher
Allen Press
Copyright
American Society of Parasitologists
Subject
BEHAVIOR
ISSN
0022-3395
eISSN
1937-2345
DOI
10.1645/GE-183R
pmid
15270083
Publisher site
See Article on Publisher Site

Abstract

The effect of the trematode Microphallus turgidus on its second intermediate host, the grass shrimp, Palaemonetes pugio, was tested. To do so, we measured the susceptibility of infected and uninfected shrimp to predation by the mummichog, Fundulus heteroclitus. Shrimp behavior was compared in the presence and absence of a fish predator, and the swimming stamina and backthrust escape responses of infected and uninfected shrimp were measured. Infected shrimp were more likely to be eaten by a predator than uninfected shrimp, had lower swimming stamina, and spent more time swimming and less time motionless in the presence of a predator. There was no difference between backthrust distances traveled in response to a stimulus by either infected or uninfected shrimp. Thus, M. turgidus may increase the predation of P. pugio in the wild, possibly by affecting the swimming stamina and predator avoidance responses of the shrimp.

Journal

The Journal of Parasitology – Allen Press

Published: Jun 2, 2004

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