NDLI: Male–male competition for large nests as a determinant of male mating success in a Japanese stream goby, Rhinogobius sp. DA

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Male–male competition for large nests as a determinant of male mating success in a Japanese stream goby, Rhinogobius sp. DA

Description of a postflexion larva specimen of Liopropoma japonicum from off Izu Peninsula, Japan

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Ichthyological Research : Volume 47

Ichthyological Research : Volume 46

Ichthyological Research : Volume 45

Ichthyological Research : Volume 44

Male–male competition for large nests as a determinant of male mating success in a Japanese stream goby, Rhinogobius sp. DA

Content Provider	Springer Nature Link
Author	Takahashi, Daisuke Kohda, Masari Yanagisawa, Yasubu
Copyright Year	2001
Abstract	Males of the stream goby Rhinogobius sp. DA (dark type) court females in deep pools and care for the eggs under stones in shallow riffles. We studied male–male competition for access to females and nest sites to understand how male size influences the mating success of this species. In field observations, larger males won in fighting with other males. However, large males did not tend to monopolize courtship opportunities, and the frequency of successful courtships, after which males led the females to the nests, was not related to male body size. The fact that courted females always escaped from the fighting sites once males began fighting likely explains why male size was not positively related to courtship success. Large males occupied large nest stones, and the number of eggs received in the nest was correlated positively with nest size. In aquarium experiments with two tiles of different sizes provided as nesting materials, males always chose the larger nest and, when two males were introduced simultaneously, the larger one occupied the larger nest. These results suggested that male mating success of this goby is determined by male–male competition for large nests rather than for access to females.
Starting Page	91
Ending Page	95
Page Count	5
File Format	PDF
ISSN	13418998
Journal	Ichthyological Research
Volume Number	48
Issue Number	1
e-ISSN	16163915
Language	English
Publisher	Springer-Verlag Tokyo
Publisher Date	2001-04-03
Publisher Place	Tokyo
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics

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