Nom du corpus

Corpus Systématique Animale

Titre du document

Partitioning behavior and intra- and interspecific interactions: a comparison between male and female groupers, Cephalopholis spiloparaea (Pisces: Serranidae: Epinephelinae)

Lien vers le document
Springer (journals)
Langue(s) du document
Type de document
Nom du fichier dans la ressource
  • T. J. Donaldson
  • Department of Fisheries, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, 812, Fukuoka, Japan

Behavior of male and female groupers, Cephalopholis spiloparaea, observed, between 1990 and 1991 in Sasanhaya Bay, Rota, Northern Mariana Islands, was compared to detect differences in proportional use between sexes, and between daylight and pre-courtship time periods. This species has male-dominated haremic groups. Time partitioning could not be measured exactly. Instead, the numbers of intra-and interspecific interactions, foraging, resting, swimming, and maintenance behaviors of each sex were measured during the observation periods. The proportion of acts in each category out of the total number of acts, termed effort, was used in comparisons. Males were predicted to devote more effort toward intra-and interspecific interactions compared to females and to maximize reproductive success. Females were predicted to devote more effort towards foraging, compared to males. This behavior maximizes reproductive effort. Both were predicted to engage in greater intra-and interspecific interactions during the pre-courtship period, corresponding both to the approaching time of courtship and to increases in the numbers of potential spatial and trophic competitors. Intra-and interspecific interactions of both males and females were greater during the pre-courtship period. Differences in all classes of behavior between sexes were only weakly significant for two, however. Males had greater effort in intra-and interspecific interactions. Females had greater effort only in maintenance behavior. Both differences were evident only during the pre-courtship period. Foraging behavior by both sexes was virtually absent during daylight and pre-courtship periods. Fish sought shelter and were not incidentally observed foraging after dusk, suggesting that this species actively forages later at night or during early morning hours, just prior to and during sunrise.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - marine biology & hydrobiology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
Catégories Scopus
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Ecology
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Aquatic Science
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Ecology, Evolution, Behavior and Systematics
Catégories WoS
  • 1 - science ; 2 - marine & freshwater biology
Identifiant ISTEX

Marine Biology

Année de publication
Présence de XML structuré
Version PDF
Score qualité du texte
  • Poissons
Type de publication
Powered by Lodex 9.3.8