Stomach Repletion Rhythms of the Caridean Shrimps, Macrobrachium americanum and M. tenellum (Crustacea: Decapoda) in a Caged-Pond System
Stomach Repletion Rhythms of the Caridean Shrimps, Macrobrachium americanum and M. tenellum (Crustacea: Decapoda) in a Caged-Pond System
Fermín Lopez-Uriostegui1, Jesús T. Ponce-Palafox2,*, Fabiola Lango-Reynoso1, María del Refugio Castañeda-Chavez1, Virgilio Eugenio Arenas-Fuentes3 and Fernando Vega-Villasante4
ABSTRACT
The stomach repletion rhythms of the caridean shrimp M. americanum and M. tenellum in caged-pond system were studied. A total of 120 caridean shrimp (60 M. americanum and 60 M. tenellum) had their stomach repletion analysis. Samples were taken four-hly over a 24 h cycle. In general it was found that stomach repletion index showed both species feed 24 h, but forage activity differs in intensity in the two species. In M. tenellum repletion index was greatest during the day and M. americanum in the night.
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June 2017
Vol. 49, Iss. 3, Pages 761-1149
