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 Chaplin-Ebanks, S.A. and M.C. Curran (2005) The effect of the parasitic isopod, Probopyrus pandalicola (Packard, 1879), on tidal activity patterns of the grass shrimp, Palaemonetes pugio Holthuis, 1949. Crustaceana 78: 1053–1061.

 

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Reference ID 14641
Reference type journalarticle
Authors Chaplin-Ebanks, S.A.
Curran, M.C.
Publication Year (for display) 2005
Publication Year (for sorting) 2005
Title The effect of the parasitic isopod, _Probopyrus pandalicola_ (Packard, 1879), on tidal activity patterns of the grass shrimp, _Palaemonetes pugio _Holthuis, 1949
Secondary Title Crustaceana
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Tertiary Title  
Tertiary Authors  
Volume 78
Issue  
Pages 1053–1061
Place published  
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Abstract
The bopyrid, Probopyrus pandalicola, infects grass shrimp, Palaemonetes pugio, and negatively affects shrimp respiration and metabolic activity, prevents reproductive output, and reduces shrimp activity. Our objective was to determine whether grass shrimp maintained tidal rhythmicity in the laboratory and whether the bopyrid parasite affected tide-related grass shrimp activity levels. Five bopyrid-parasitized and five unparasitized shrimp were selected, and examined for sex, length, and for number of trematode cysts (to exclude any effect of that parasite). The shrimp were randomly placed in individual static aquaria with sand substrate and filtered seawater, and tanks were separated by opaque dividers. Shrimp were maintained on an ambient photoperiod (14.5-h day) and observed for activity every three hours (corresponding with high, ebb, low, and flood water) for two tidal cycles. Tidal stage had a significant effect on shrimp activity with the maximum number of shrimp (71%) resting at flood and the minimum (16%) at ebb (n = 10 trials). There was a significant effect of light and tide-light interaction on shrimp activity with the greatest activity at night, particularly during nighttime-ebb. Because shrimp were most active during ebb, they may be more susceptible to predation by visual predators in the water column at that time. Bopyrid infection did not significantly influence shrimp activity, and thus was not the primary factor affecting shrimp activity in the first 30 h after collection
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Reference Contributor Tag gpoore
Last Changed Wed Dec 5 10:57:39 2012
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