The species that comprise class Chondrichthyes exhibit a wide diversity of reproductive
strategies, but they all have internal fertilization and a relatively small number of large …

Morphology of the urogenital system has evolved during fish speciation. Chondrostei
(sturgeons and paddlefishes) possess an excretory system which is called “primitive” in that …

Fisheries‐dependent data underpin essential scientific and management applications.
Electronic monitoring (EM) systems are increasingly being used to supplement human …

The great diversity in genital shape and function across and within the animal phyla hamper
the identification of specific evolutionary trends that stretch beyond the limits of the group …

Sperm storage in males and females was studied for the deepwater shark Portuguese
dogfish Centroscymnus coelolepis. In males, sperm is stored in the seminal vesicle from …

Simple Summary Sperm extraction and artificial insemination may serve ex situ conservation
initiatives for threatened sharks and related species. A comparison of the reproductive …

The purpose of this study was to describe the structure of the reproductive tract of males of
Potamotrygon magdalenae before, during, and after they acquire sexual maturity, and to …

The thornback ray, Raja clavata L., 1758 had a wide A tlanto-M editerranean distribution.
However at present captures of the species showed a constant decline, especially o ff the …

The yellow stingray, Urobatis jamaicensis (Cuvier) has been the subject of a multitude of
diverse studies on its natural history, morphology, and physiology. We have attempted here …

Species of the class Chondrichthyes (sharks, rays, and chimaeras) exhibit diverse
reproductive modes ranging from strictly lecithotrophic oviparity to viviparity with varying …