Growth-Related Changes in Diet and Foraging Behavior of the Yellow Wrasse Thalassoma lutescens at Kuchierabu Island.
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- Gushima Kenji
- Faculty of Applied Biological Science, Hiroshima University
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- Hazumi Yoshiho
- Faculty of Applied Biological Science, Hiroshima University
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- Kakuta Syunpei
- Faculty of Applied Biological Science, Hiroshima University
Bibliographic Information
- Other Title
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- 口永良部島におけるヤマブキベラ<I>Thalassoma lutescens</I>の成長に伴う食性と採餌行動の変化
Description
Ontogenetic changes in diet and foraging behavior of Thalassoma lutescens were examined in shallow reef habitats around Kuchierabu Island, southern Japan. This species mainly took small benthic invertebrates, including gammarids, polychaetes, sipunculids, chitons, crabs, gastropods, pelecypods and urchins from algal mats. Larger fish consumed correspondingly larger prey, although most of the latter were armored with hard exoskeletons, shells or body plates (e.g., crabs, gastropods, pelecypods and urchins). Such hard parts were crushed with the molar-like, pharyngeal teeth which develop with fish growth, allowing exploitation of such larger, hard-bodied prey. Because the densities of larger prey species were relatively low in the initial habitats foraged, larger fish shifted their foraging attention to rock and coral crevices, where the prey species dwelt in greater numbers, as well as foraging over larger areas. Such behavioral changes maintained high foraging efficiency in larger fish
Journal
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- Japanese Journal of Ichthyology
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Japanese Journal of Ichthyology 38 (3), 307-313, 1991
The Ichthyological Society of Japan
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Details 詳細情報について
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- CRID
- 1390282679739536128
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- NII Article ID
- 130004019108
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- ISSN
- 18847374
- 00215090
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- Text Lang
- en
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed