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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Diet shift in the sand shrimp crangon uritai along the estuary-marine gradient
Journal of Crustacean Biology, Volume 31, No. 4, Year 2011
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Description
Spatial and temporal variations in the diet of Crangon uritai were examined using stable isotope and stomach content analyses. The sand shrimp and its potential prey were collected from Yura Estuary (35 m), shallow coast (510 m), and deep coast (3060 m) stations of Tango Sea from April 2006 to February 2007. The measurements of the length (carapace and total lengths) and feeding habit (stomach content and stable isotope ratios) of C. uritai showed that this shrimp changed its diet during migrations between the estuary and marine environments. This species consumes a variety of food at the lower estuary: mysid Orientomysis japonica, small crustaceans particularly amphipod Melita hoshinoi, and bivalve Veremolpa micra. The abundant mysid O. japonica at the shallow coast and juveniles of unidentified bivalve species at the deep coast were the favored food throughout the year. The δ 13C and δ 15N variations in C. uritai confirmed the spatial and temporal diet shift in gut content composition as the sand shrimp grow and migrate along the estuary-marine gradient. © The Crustacean Society.
Authors & Co-Authors
Antonio, Emily S.
South Africa, Grahamstown
Rhodes University
Kasai, Akihide
Japan, Kyoto
Kyoto University
Ueno, Masahiro
Japan, Kyoto
Field Science Education and Research Center
Ishihi, Yuka
Japan, Minami-ise
National Research Institute of Aquaculture, Fra
Yokoyama, Hisashi
Japan, Minami-ise
National Research Institute of Aquaculture, Fra
Yamashita, Yoh
Japan, Kyoto
Field Science Education and Research Center
Statistics
Citations: 11
Authors: 6
Affiliations: 4
Identifiers
Doi:
10.1651/10-3424.1
ISSN:
02780372
Research Areas
Food Security