DSpace university logo mark
Advanced Search
Japanese | English 

NAOSITE : Nagasaki University's Academic Output SITE > Faculty of Fisheries > Articles in academic journal >

Onset and development of aggressive behavior in the early life stages of the seven-band grouper Epinephelus septemfasciatus


File Description SizeFormat
Aqua290_97.pdf332.66 kBAdobe PDFView/Open

Title: Onset and development of aggressive behavior in the early life stages of the seven-band grouper Epinephelus septemfasciatus
Authors: de la S. Sabate, F. / Sakakura, Yoshitaka / Shiozaki, Masashi / Hagiwara, A.
Issue Date: 4-May-2009
Publisher: ELSEVIER
Citation: Aquaculture, 290(1-2), pp.97-103; 2009
Abstract: Onset and development of aggressive behavior were observed in the early life stages of seven-band grouper Epinephelus septemfasciatus. Fish culture was divided into two terms: the first term, from hatch until 21 days after hatching (DAH); and the second term, from 21 DAH until settlement (65 DAH). During the second term the effect of different aeration rate on survival was investigated. Survival during the first term was 14.1 ± 7.1%. In the second term, survival in control tanks (aeration rate 200 mL/min) was 14.7 ± 10.2% and 18.8 ± 7.8% in the increasing aeration tanks (aeration rate 200-800 mL/min). Behavioral observations were conducted at about 8-day intervals and aggressive behavior was quantified by the frequency of chase behavior. Aggressive behavior was first observed on 52 DAH when pigment appeared on the dorsal area of the metamorphosing larvae (standard length 16.6 ± 6.0 mm). Aggressive behavior significantly increased from 59 DAH coinciding with the beginning of settlement.
Keywords: Aggressive behavior / Epinephelus septemfasciatus / Ontogeny / Swimming behavior
URI: http://hdl.handle.net/10069/21810
ISSN: 00448486
DOI: 10.1016/j.aquaculture.2009.02.005
Rights: Copyright (c) 2009 Elsevier B.V. All rights reserved.
Type: Journal Article
Text Version: author
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/21810

All items in NAOSITE are protected by copyright, with all rights reserved.

 

Valid XHTML 1.0! Copyright © 2006-2015 Nagasaki University Library - Feedback Powerd by DSpace