Donnees cytologiques, electrophysiologiques et biochimiques relatives au phenomene de fecondation chez le homard (Homarus gammarus ). Implication du processus d'activation sur le mecanisme d'attache des oeufs pondus

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Contributeur(s) Actes de colloques. Ifremer. Brest [ACTES COLLOQ. IFREMER.]. 1985
Identifiant documentaire 9-1190
Identifiant OAI oai:archimer.ifremer.fr:1190
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Auteur(s): Goudeau, M,Lachaise, F,Kubisz, P,Goudeau, H
Mots clés Homarus gammarus Malacostraca Biological attachment Hormones Electrophysiology Biochemistry Cytology Eggs Embryonic development Cell membranes Oocytes Fecundity Homard Decapode Crustacé Funicule Mues embryonnaires Enveloppe de fécondation Ecdystéroîdes Potentiel membranaire Ovocyte
Date de publication 01/12/1983
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Droits de réutilisation info:eu-repo/semantics/openAccess

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Electrophysiological measurements and related cytological controls were done on immature and submature oocytes of Homarus gammarus . By chromatography (HPLC) and radio-immunoassays (RIA) it was established that submature oocytes displayed different ecdysteroids. Furthermore, the structure of the stalk (funiculus) for the laid eggs attachment was analyzed. it consisted of the two superimposed vitelline envelopes which were likely modified by the cortical reaction exudate during the fertilization process. In addition, the successive secretory phases, regarding to the embryonic envelopes were evidenced. Finally, the ecdysteroid titers of embryonic stages were measured.
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