Nom du corpus

Corpus Systématique Animale

Titre du document

Sexual differentiation, gonad development, and spawning seasonality of the Hawaiian butterflyfish, Chaetodon multicinctus

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Mots-clés d'auteur
  • Chaetodontidae
  • Coral reef fishes
  • Fish reproduction
  • Gonad histology
Nom du fichier dans la ressource
Poissons_v2b_002567
Auteur(s)
  • Timothy C. Tricas 1,2
  • Joy T. Hiramoto 1
Affiliation(s)
  • 1) Department of Zoology, University of Hawaii at Manoa, 96822, Honolulu, HI, U.S.A.
  • 2) Marine Biological Laboratory, 02543, Woods Hole, MA, U.S.A.
Résumé

Synopsis: The reproductive biology of the coral reef butterflyfish,Chaetodon multicinctus, was investigated by histological examination of gonads sampled over an 18 month period from a shallow inshore population on Oahu, Hawaii. Most gonads developed directly from previously undifferentiated tissue. Ovarian development (the structural formation of lamellae and primary oocytes) was observed in fish ?44 mm and testicular development (the formation of spermatogenic crypts) in fish ?62 mm standard length (SL). In addition, testis formation was identified within the ovarian lamellae of several differentiated but immature fish. It is hypothesized that prematurational sex change may facilitate monogamy within the highly competitive social structure of this site attached species. Oocyte development in mature females was marked by distinct phases of primary growth, the formation of yolk vesicles, and vitellogenesis. Spawning activity was histologically identified by the maturation and hydration of fully yolked oocytes, and presence of postovulatory follicles. Recently spawned females from field collections and experimental gonadotropin-treatments exhibited postovulatory follicles that were estimated to persist at least 24 h after ovulation. Atresia of yolked oocytes was classified into four stages of cell degeneration and resorption. Monthly analyses of oocyte development and atresia within the sample population show thatC. multicinctus has a protracted annual spawning season with a major peak during the early spring and evidence of spawning activity among some individuals in the fall. Histological analyses of spawning activity provide more accurate and unambiguous information than do traditional gonadosomatic assays in this and probably other coral reef fishes.

Catégories Science-Metrix
  • 1 - applied sciences
  • 2 - agriculture, fisheries & forestry
  • 3 - fisheries
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
Catégories Scopus
  • 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
  • 1 - science ; 2 - ecology
Identifiant ISTEX
6FE8D7AC890D0BC4092DF43A62A4C07A7F1BCC4C
Revue

Environmental Biology of Fishes

Année de publication
1989
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
9.952
Sous-corpus
  • Poissons
Type de publication
Journal
ark:/67375/1BB-9ZP0V7SD-X
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