Epididymal morphophysiology of adult collared peccaries (Pecari tajacu)

Brazilian Journal of Veterinary Research and Animal Science

Natália Inagaki de Albuquerque¹  Ana Cássia Sarmento Ferreira²  Diva Anelie Guimarães³  Anna Patrycia Martins de Oliveira³  Otávio Mitio Ohashi³  Deise de Lima Cardoso³  Maria Auxiliadora Pantoja Ferreira⁴ 

[1] Embrapa Amazônia Oriental;Instituto Federal do Pará;Universidade Federal do Pará, Instituto de Ciências Biológicas, Laboratório de Reprodução Animal;Universidade Federal do Pará, Instituto de Ciências Biológicas, Laboratório de Técnicas Histológicas;

关键词: Epididymis;    Spermatozoon;    Histology;    Morphology;    Pecari tajacu;   

DOI  :  10.11606/issn.1678-4456.bjvras.2016.108493

来源: DOAJ

【 摘 要 】

A functional understanding of the epididymis makes it possible to increase a species’ fertility, since it facilitates the preservation of gametes for use in assisted reproduction techniques. This study analyzed the histological features of the different regions of the epididymis of the Pecari tajacu and the associated pathologies found in the spermatozoa present in this organ. After an orchiectomy surgery to remove the testicles and epididymis obtained from eight adult animals bred in captivity, fixation and histological processing of samples were carried out. The presence of pseudostratified columnar epithelium with stereocilia was observed in all regions of the epididymis (caput, corpus and caudal). Similarities were noted between the average height of the corpus and caudal epithelium, which differed from that found at the caput (1- proximal: region associated with the efferent ducts; 2- distal: region associated with corpus epididymis). It was also observed that the proximal caput presents a smaller average of the tubules diameter compared to other portions of the epididymis. Regarding pathologies of the spermatozoa, thirteen different types of morphological modifications were observed. Underdeveloped spermatozoa and detached heads were most frequently encountered along the epididymis of the collared peccaries. This study is a pioneer in the area and its data will serve as a basis for comparative research on the reproductive biology of artiodactyls, thus contributing to their conservation and reproduction.

【 授权许可】

Unknown