title: [Biology and physiology of development, growth and reproduction of electric rays. Survey of research since 1965].
abstract: Since 1965, various works have pointed to electric rays (chiefly Torpedo marmorata and T. torpedo = T. ocellata) as an interesting material for the biological and physiological research on development (especially that of electric organs), growth and reproduction. In a review of the main published results, attention is called upon several points requiring new studies (buoyancy and its regulation during gestation time, neuroendocrine control of gestation, etc.). T. torpedo, a much abundant species in the Bay of Tunis, seems by far the most well-suited material for this, because of its annual reproductive cycle. New results concerning T. m. are also presented: gestation length, embryo retention, and weight changes of the yolk sacs. The microscopic structure of the female genital tract is illustrated.
mesh_terms: D000375:Aging; D000818:Animals; D005260:Female; D005836:Genitalia, Female / Q000502:physiology; D008297:Male; D010902:Pituitary Gland / Q000502:physiology; D012098:Reproduction; D014101:Torpedo / Q000254:growth & development*
vernacular_title: Biologie et physiologie du développement, de la croissance et de la reproduction des torpilles. Un aperçu des recherches depuis 1965.