The most significant events of the reproductive cycle of the Patagonian stone crab, Platyxanthus patagonicus, were studied in specimens sampled in northern Patagonian gulfs from August 2004 to May ...

Purdue University researchers were surprised to learn in their study of yellow perch that the species recovered from overfishing in Lake Michigan to reach reproductive maturity at a later age and ...

A fisheries oceanographer and colleagues introduce a new endocrine-based approach to determine timing of sexual maturation in one of the most important commercial tuna species in the Atlantic. Using a ...

Why do animals engage in sexual reproduction? Biologists sought answers with mud snails that breed both sexually and asexually. They found that asexual snails grow faster and reach reproductive age ...

The slow maturation of human children—often viewed as burdensome in modern parenting—is, in fact, a remarkable evolutionary achievement. Unlike other species, humans remain biologically immature and ...

This is a preview. Log in through your library . Abstract The species (Platyhelminthes: Turbellaria; Tricladida) was originally described in the United States from Pennsylvania by Dr. Joseph Leidy, ...