Canid Reproductive Biology: Norm and Unique Aspects in Strategies and Mechanisms

Overview

Journal Animals (Basel)

Date 2021 Apr 3

PMID 33804569

Citations 6

Authors

Jennifer B Nagashima

Nucharin Songsasen

Affiliations

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Abstract

The reproductive physiology of canids is unique compared to other mammalian species. Specifically, the reproductive cycle of female canids is characterized by extended periods of proestrus and estrus followed by obligatory diestrus and protracted ovarian inactivity (anestrus). Although canid reproduction follows this general pattern, studies have shown variations in reproductive biology among species and geographic regions. Understanding of these differences is critical to the development of assisted reproductive technologies including estrus induction, gamete rescue, and embryo production techniques for canid conservation efforts. This review summarizes current knowledge of canid reproduction, including estrus cyclicity, seasonality, and seminal traits, with the emphasis on species diversity. The application of reproductive technologies in wild canid conservation will also be discussed.

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