Chemoreception and vertical movement in planktonic yolk-sac larvae of red sea bream Pagrus major

The capability of planktonic yolk-sac larvae of red sea bream Pagrus major in detecting food was examined in the laboratory to ascertain basic knowledge on the early life history of this marine fish. After infrequent vertical burst swimming followed by slight rising or sinking, the larvae remained m...

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Main Authors: Tanaka, Yuuzi, Mukai, Yukinori, Takii, Kenzi, Kumai, Hidemi
Format: Article
Language:English
Published: Wiley-Blackwell 1991
Subjects:
Online Access:http://irep.iium.edu.my/11598/1/1991_tanaka.pdf
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author Tanaka, Yuuzi
Mukai, Yukinori
Takii, Kenzi
Kumai, Hidemi
author_facet Tanaka, Yuuzi
Mukai, Yukinori
Takii, Kenzi
Kumai, Hidemi
author_sort Tanaka, Yuuzi
collection IIUM
description The capability of planktonic yolk-sac larvae of red sea bream Pagrus major in detecting food was examined in the laboratory to ascertain basic knowledge on the early life history of this marine fish. After infrequent vertical burst swimming followed by slight rising or sinking, the larvae remained motionless within thin layers of concentrated food extract (rotifer, Brachionus plicatilis). At the moment of hatching, the larvae already have receptor cells with several cilia arranged radially in their open nostrils. Thus it is likely that by means of their vertical movement they are capable of sensing the thin food patch layer. We suggest that planktonic larvae of Pagrus major are capable of detecting and remaining within food patches even before the onset of feeding. The onset of food detection in the earlier stages may be, to some extent, the more efficient strategy for larval survival and growth because this ability could contribute to a reduction in energy consumption.
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spelling oai:generic.eprints.org:115982012-05-14T00:22:11Z http://irep.iium.edu.my/11598/ Chemoreception and vertical movement in planktonic yolk-sac larvae of red sea bream Pagrus major Tanaka, Yuuzi Mukai, Yukinori Takii, Kenzi Kumai, Hidemi SH Aquaculture. Fisheries. Angling The capability of planktonic yolk-sac larvae of red sea bream Pagrus major in detecting food was examined in the laboratory to ascertain basic knowledge on the early life history of this marine fish. After infrequent vertical burst swimming followed by slight rising or sinking, the larvae remained motionless within thin layers of concentrated food extract (rotifer, Brachionus plicatilis). At the moment of hatching, the larvae already have receptor cells with several cilia arranged radially in their open nostrils. Thus it is likely that by means of their vertical movement they are capable of sensing the thin food patch layer. We suggest that planktonic larvae of Pagrus major are capable of detecting and remaining within food patches even before the onset of feeding. The onset of food detection in the earlier stages may be, to some extent, the more efficient strategy for larval survival and growth because this ability could contribute to a reduction in energy consumption. Wiley-Blackwell 1991 Article PeerReviewed application/pdf en http://irep.iium.edu.my/11598/1/1991_tanaka.pdf Tanaka, Yuuzi and Mukai, Yukinori and Takii, Kenzi and Kumai, Hidemi (1991) Chemoreception and vertical movement in planktonic yolk-sac larvae of red sea bream Pagrus major. Journal of Applied Ichthyology, 7 (3). pp. 129-135. ISSN 0175-8659 (P), 1439-0426(O) http://onlinelibrary.wiley.com/doi/10.1111/j.1439-0426.1991.tb00519.x/abstract 10.1111/j.1439-0426.1991.tb00519.x
spellingShingle SH Aquaculture. Fisheries. Angling
Tanaka, Yuuzi
Mukai, Yukinori
Takii, Kenzi
Kumai, Hidemi
Chemoreception and vertical movement in planktonic yolk-sac larvae of red sea bream Pagrus major
title Chemoreception and vertical movement in planktonic yolk-sac larvae of red sea bream Pagrus major
title_full Chemoreception and vertical movement in planktonic yolk-sac larvae of red sea bream Pagrus major
title_fullStr Chemoreception and vertical movement in planktonic yolk-sac larvae of red sea bream Pagrus major
title_full_unstemmed Chemoreception and vertical movement in planktonic yolk-sac larvae of red sea bream Pagrus major
title_short Chemoreception and vertical movement in planktonic yolk-sac larvae of red sea bream Pagrus major
title_sort chemoreception and vertical movement in planktonic yolk sac larvae of red sea bream pagrus major
topic SH Aquaculture. Fisheries. Angling
url http://irep.iium.edu.my/11598/1/1991_tanaka.pdf
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