Reproductive Biology and Phylogeny of Chondrichthyes

Informationen zum Autor William C. Hamlett Klappentext Internal fertilization is universal in chondrichthyan fishes and, as such, requires a suite of biological activities, including behavioral, morphological, and physiological mechanisms, to ensure successful copulation and fertilization. This volume correlates available data and ideas concerning the development, reproductive morphology, function, and phylogeny of chondrichthyan fishes. Coverage includes oogenesis, spermatogenesis, gestation, regulation of reproductive tract function, sperm storage, nutrient provision, placentation, and phylogeny. It also reviews and considers the idea that yolk sac viviparity is the plesiomorphic state rather than oviparity. Zusammenfassung Internal fertilization is universal in chondrichthyan fishes and! as such! requires a suite of biological activities! including behavioral! morphological and physiological mechanisms! to ensure successful copulation and fertilization. This volume correlates available data and ideas concerning the development! reproductive morphology! function! and phylogeny of chondrichthyan fishes. Coverage includes oogenesis! spermatogenesis! gestation! regulation of reproductive tract function! sperm storage! nutrient provision! placentation! and phylogeny. New and exciting data is presented including the idea that yolk sac viviparity is the plesiomorphic state rather than oviparity. Inhaltsverzeichnis Phylogenetic Relationships Among the Major Lineages of Modern Elasmobranchs. Population and Reproductive Genetics in Chondrichthyes. Reproductive Evolution of Chondrichthyans. Reproduction in Fisheries Science. Elasmobranch Courtship and Mating Behavior. The Testis and Spermatogenesis. Spermatozoa and Phylogeny. The Elasmobranch Ovary. Endocrine Control of the Female Reproductive Tract. Oviducal Glands in Chondrichthyans. Alkaline Glands and Clasper Glands of Batoids. Male Genital Ducts and Copulatory Appendages in Chondrichthyans. Chondrichthyan Parity, Lecithotrophy and Matrotrophy. Oophagy, Intrauterine Cannibalism and Reproductive Strategy in Lamnoid Sharks. Placentatrophy in Sharks. Checklist of Living Chondrichthyes. ...

Autorentext
William C. Hamlett

Klappentext
Internal fertilization is universal in chondrichthyan fishes and, as such, requires a suite of biological activities, including behavioral, morphological, and physiological mechanisms, to ensure successful copulation and fertilization. This volume correlates available data and ideas concerning the development, reproductive morphology, function, and phylogeny of chondrichthyan fishes. Coverage includes oogenesis, spermatogenesis, gestation, regulation of reproductive tract function, sperm storage, nutrient provision, placentation, and phylogeny. It also reviews and considers the idea that yolk sac viviparity is the plesiomorphic state rather than oviparity.

Inhalt
Phylogenetic Relationships Among the Major Lineages of Modern Elasmobranchs. Population and Reproductive Genetics in Chondrichthyes. Reproductive Evolution of Chondrichthyans. Reproduction in Fisheries Science. Elasmobranch Courtship and Mating Behavior. The Testis and Spermatogenesis. Spermatozoa and Phylogeny. The Elasmobranch Ovary. Endocrine Control of the Female Reproductive Tract. Oviducal Glands in Chondrichthyans. Alkaline Glands and Clasper Glands of Batoids. Male Genital Ducts and Copulatory Appendages in Chondrichthyans. Chondrichthyan Parity, Lecithotrophy and Matrotrophy. Oophagy, Intrauterine Cannibalism and Reproductive Strategy in Lamnoid Sharks. Placentatrophy in Sharks. Checklist of Living Chondrichthyes.

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