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DES DIFFÉRENCES LIÉES AU SEXE DANS LES STRATÉGIES DE RÉPARTITION SPATIALE CHEZ DES POISSONS PORTE-ÉPÉE (XIPHOPHORUS HELLERi) MAINTENUS EN CAPTIVITÉ

Cotnoir, Pierre-Alain and Beaugrand, Jacques P. and Goulet, Claude (1986) DES DIFFÉRENCES LIÉES AU SEXE DANS LES STRATÉGIES DE RÉPARTITION SPATIALE CHEZ DES POISSONS PORTE-ÉPÉE (XIPHOPHORUS HELLERi) MAINTENUS EN CAPTIVITÉ. [Journal (Paginated)]

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Abstract

The swordtail fish is a species particularly abundant in fresh water of Mexico and Central America. It is an ovoviviparous species, not really territorial which shows nipright order. In this research, significant differences of spatial distribution have been found according to the position in the nipright order and according to the sex of the fish. These differences bind with two external variables: the presence of sexual partners and the space available for the fish. The dominating males prefer a space partition allowing access to the females more than a compartment allowing access to more space in volume. They also chase their subordinates in the contiguous compartment of the aquarium. Females swordtails prefer the bigger compartment independently of the presence of conspecific males. These results are discussed in the light of reproductive strategies particular to each sex.

Item Type:Journal (Paginated)
Keywords:swordtail fish, Xiphophorus, preference of access to females, reproductive strategy
Subjects:Biology > Animal Behavior
Biology > Ethology
ID Code:1962
Deposited By: Beaugrand, Jacques
Deposited On:05 Dec 2001
Last Modified:11 Mar 2011 08:54

References in Article

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