Nom du corpus

Corpus Systématique Animale

Titre du document

Patterns of reproductive periodicities in four species of indo-pacific echinoderms

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Nom du fichier dans la ressource
Echinodermes_v2b_0209
Auteur(s)
  • J. S. Pearse
Affiliation(s)
  • American University in Cairo, Cairo, U.A.R.
Résumé

1. Four species of Indo-Pacific echinoderms, the echinoidsDiadema setosum andEchinometra mathaei, the asteroidLinckia laevigata and the holothuroidHolothuria atra, are reproductively active and spawn more or less continuously, when they occur near the equator. 2. Gametogenesis is synchronous among individuals ofD. setosum, and spawning occurs rhythmically, probably more or less monthly, during the spawning period. This spawning rhythm does not seem to be related to lunar phases as previously reported. When further than 10–15° latitude from the equator, reproductive activity becomes more and more restricted, until at about 30° latitude the spawning period is limited to the summer months. 3. Gametogenesis is asynchronous among individuals ofE. mathaei, L. laevigata andH. atra, and different individuals spawn at different times during the spawning periods. Some individuals ofE. mathaei are reproductively active at all times of the year throughout most of its distribution, except when north of about 27° N. latitude when reproductive activity is limited to the summer months. 4. Sea temperature seems to be important in regulating the reproductive periodicities of at least two of the species.D. setosum is reproductively active when the temperatures are above about 25° C., andE. mathaei is reproductively active when the temperatures are above about 18–20° C.

Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - ethologie animale
Identifiant ISTEX
F78ACA5C10D3292CD362D9F2DC2B7C84DAFBB73D
Revue

Proceedings of the Indian Academy of Sciences - Section B

Année de publication
1968
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
9.412
Sous-corpus
  • Echinodermes
Type de publication
Journal
ark:/67375/1BB-27SQ0DWL-5
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