Reproduction, Life History, and Ecology of the Round Stingray, Urolophus Halleri Cooper |
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44x Fig age classes Amphipoda Anaheim animals base batoideans Belmont Shore birth branchial California captivity captured caudal spine clasper cloaca crustaceans deferens diameter efferens elasmobranchs embryo enlarge epididymis epithelial epithelium extend external gill filaments fathoms fetus fetuses fishes folds follicles follicular epithelium germinal disc gestation gland growth rate Hook and line inshore large germ cells length longitudinal duct lumen males move natal period Newport Dunes ovary oviduct ovulation ovum papilla peaks pectoral fins Phylum polychaete posterior primary lobule recaptured ripe round stingray Seal Beach secondary lobule seen September Sertoli cells sex ratio sexual maturity shows siphon sac sperm sperm clumps spermatogenesis spermatogonia spiracle stomachs Table tag only returned taken testicular appendage testicular lobules testis theca tissue total food volume trawling trophonemata tubules urogenital Urolophus halleri uterine uterus vas deferens ventral villi water temperature width frequency curve yolk sac young rays