The maternal-embryonic relationship in viviparous fishes

John P. Wourms, Bryon D. Grove, Julian Lombardi

Research output: Contribution to journalArticle

219 Citations (Scopus)

Abstract

This chapter discusses the maternal–embryonic relationship in viviparous fishes. Viviparity is a highly successful mode of reproduction that has evolved independently many times and with many variations in widely separated taxonomic groups. It occurs in all classes of vertebrates, except birds, and among many different groups of invertebrates. Initial steps in the evolution of viviparity involved a shift from external to internal fertilization and the retention of fertilized eggs in the female reproductive system. The osmoregulation of early embryos can be accomplished more efficiently and with less expenditure of embryonic energy in a maternally controlled uterine environment, but as development progresses to term, the embryos presumably acquire an increasing degree of osmoregulatory independence. Available evidence suggests that maternal regulation of the osmotic and chemical environment of the embryo also confers a selective advantage on viviparous teleosts. The uterine wall of most viviparous elasmobranchs and the coelocanth both delimits and defines the embryonic environment. The most spectacular maternal specializations for uterine gestation involve the uterine wall and involve (1) the amplification of the surface area in the form of folds, villi, or trophonemata; (2) the production of histotrophe or uterine milk’ (3) the compartmentalization of embryos; and (4) the development of placental attachment sites.

Original languageEnglish (US)
Pages (from-to)1-134
Number of pages134
JournalFish Physiology
Volume11
DOIs
StatePublished - Jan 1988

Fingerprint

embryo (animal)
Fishes
Embryonic Structures
Mothers
vivipary (animals)
osmoregulation
fish
Elasmobranchii
female reproductive system
Osmoregulation
Controlled Environment
Placentation
Zygote
Invertebrates
villi
fertilization (reproduction)
Fertilization
Energy Metabolism
Birds
Reproduction

ASJC Scopus subject areas

  • Physiology
  • Animal Science and Zoology

Cite this

The maternal-embryonic relationship in viviparous fishes. / Wourms, John P.; Grove, Bryon D.; Lombardi, Julian.

In: Fish Physiology, Vol. 11, 01.1988, p. 1-134.

Research output: Contribution to journalArticle

Wourms, John P. ; Grove, Bryon D. ; Lombardi, Julian. / The maternal-embryonic relationship in viviparous fishes. In: Fish Physiology. 1988 ; Vol. 11. pp. 1-134.
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