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Marine Ecology Progress Series

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MEPS 131:159-163 (1996)  -  doi:10.3354/meps131159

Gut clearance rate as predictor of food limitation situations. Application to two estuarine copepods: Acartia bifilosa and Eurytemora affinis

Irigoien X, Castel J, Gasparini S

Gut clearance rate-temperature relationships were determined in laboratory conditions, with food in excess, and in the field to assess possible food limitation situations for 2 estuarine copepods, Eurytemora affinis and Acartia bifilosa. From the comparison of these relationships, it appeared that A. bifilosa was food limited whereas E. affinis was not. The gut clearance rate-temperature regressions obtained with nonsaturating food were not significantly different from the one obtained by Dam & Peterson (J exp mar Biol Ecol 123:1-14, 1988) for several copepod species. Consequently, we conclude that this regression can be employed as reference.

Temperature . Food limitation . Estuarine copepods . Gut clearance rate . Turbidity zone

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