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Mustelus schmitti (called gatuso or gatuzo)constitues the most common species of sharks in Argentine´s fishery. This work investigates some aspects of the reproductive biology of the Mustelus schmitti´s female for the purposes of assisting fisheries managers so as to prevent overexplotation. Commonly, samples are measured, weighed and sexed in order to know the reproductive condition of a fish but a complete knowledge requires more detailed analysis based on histological techniques,which provides aspects of changes at the cellular level. Hence, the knowledge of the development of an ovum and the spermatozoa is necessary to evaluate the reproductive condition of the species that is under study. One of the main objectives of this book is to present a wide range of histological approaches being used to better understand the reproductive dynamics of Chodrichthyes in particular, and fishes in general, and promote discussion of reproductive subjects critical to sustainables fishieries within a histological context.

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- Assistant in Anatomohistology (Universidad Nacional del Sur) July, 1997 till date.- Professor in Histology and Embriology (Universidad Católica de La Plata) March, 2011 till date.- Professor in Genetics and Embriology (Universidad Católica de La Plata) March, 2011 till date.Numerous articles presented in congress and published in journals.

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