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Effects of size and morphotype on dominance hierarchies and resource competition in the freshwater prawn Macrobrachium rosenbergii
Year:
1992
Source of publication :
Animal Behaviour
Authors :
Barki, Assaf
;
.
Karplus, Ilan
;
.
Volume :
44
Co-Authors:
Barki, A., Agricultural Research Organization, Fish and Aquaculture Research Unit, P.O. Box 6, Bet-Dagan, 50250, Israel
Karplus, I., Agricultural Research Organization, Fish and Aquaculture Research Unit, P.O. Box 6, Bet-Dagan, 50250, Israel
Goren, M., Department of Zoology, Tel-Aviv University, Tel-Aviv, Israel
Facilitators :
From page:
547
To page:
555
(
Total pages:
9
)
Abstract:
Sexually mature males of the freshwater prawn, Macrobrachium rosenbergii, appear in three distinct morphotypes which coexist within populations. Two of the morphotypes, the Blue-clawed and the Orange-clawed, overlap in size but differ in claw to body length ratio. The effects of size and morphotype on dominance rank were studied in groups composed of these two morphotypes, each represented by prawns in three size categories. Blue-clawed males dominated Orange-clawed males irrespective of size. The effect of size was more pronounced within morphotypes. The effect of morphotype can be interpreted as an advantage for Blue-clawed males because of their larger claws. The alpha position, occupied by the largest Blue-clawed male, was evident from the first daily observation. A linear rank order was evident only in the following 2 days. The consequences of dominance were reflected in competition for resources, where the alpha male clearly had priority of access to food and shelter. © 1992.
Note:
Related Files :
body size
dominance hierarchy
Macrobrachium rosenbergii
morphotype
prawn
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Related Content
More details
DOI :
10.1016/0003-3472(92)90064-G
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
31336
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:01
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Scientific Publication
Effects of size and morphotype on dominance hierarchies and resource competition in the freshwater prawn Macrobrachium rosenbergii
44
Barki, A., Agricultural Research Organization, Fish and Aquaculture Research Unit, P.O. Box 6, Bet-Dagan, 50250, Israel
Karplus, I., Agricultural Research Organization, Fish and Aquaculture Research Unit, P.O. Box 6, Bet-Dagan, 50250, Israel
Goren, M., Department of Zoology, Tel-Aviv University, Tel-Aviv, Israel
Effects of size and morphotype on dominance hierarchies and resource competition in the freshwater prawn Macrobrachium rosenbergii
Sexually mature males of the freshwater prawn, Macrobrachium rosenbergii, appear in three distinct morphotypes which coexist within populations. Two of the morphotypes, the Blue-clawed and the Orange-clawed, overlap in size but differ in claw to body length ratio. The effects of size and morphotype on dominance rank were studied in groups composed of these two morphotypes, each represented by prawns in three size categories. Blue-clawed males dominated Orange-clawed males irrespective of size. The effect of size was more pronounced within morphotypes. The effect of morphotype can be interpreted as an advantage for Blue-clawed males because of their larger claws. The alpha position, occupied by the largest Blue-clawed male, was evident from the first daily observation. A linear rank order was evident only in the following 2 days. The consequences of dominance were reflected in competition for resources, where the alpha male clearly had priority of access to food and shelter. © 1992.
Scientific Publication
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