Microscopic architecture of the tegumentar system of the South American fur seal (Arctocephalus australis, Zimmermann, 1783)

• Grant number: 06/05896-9
• Support Opportunities: Regular Research Grants
• Start date: December 01, 2006
• End date: November 30, 2008
• Field of knowledge: Agronomical Sciences - Veterinary Medicine - Animal Clinics and Surgery
• Principal Investigator: Francisco Javier Hernandez Blazquez
• Grantee: Francisco Javier Hernandez Blazquez
• Host Institution: Faculdade de Medicina Veterinária e Zootecnia (FMVZ). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

The species Arctocephalus australis, also known as South American fur seals, ia a sea mammal that is found in the brazilian southern seashores,. They do not have reproductive colonies in brazilian territory, but they migrate in search of warmer regions for resting. These animals.live in both aquactic and dry ground environment and thus developed some tegumentary adaptations to cope with both environments, specially those related with their epidermal and vascular systems. Our objective is to describe the microscopic aspect of the integument of this species, and to compare several regions of the seal body, specially the fins epidermis and to verify if there is difference between the cell proliferation index of the fins and other parts of the body. Fragments of several regions of the body will be collected from fresh deceased animals, processed by histologic techniques and observed under light microscope. The cell proliferation index will be evaluated by counting of the number of epidermal cell nuclei that express the Ki67, clone MIB-1 and PCNA antigens. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DA SILVA, ANA PAULA; SILVA, RODRIGO GODOI; COGLIATI, BRUNO; MACHADO DIAS, ALEX SANDER; LE BAS, ALFREDO E.; HERNANDEZ-BLAZQUEZ, FRANCISCO JAVIER. Bleaching of melanin in the epidermis of South American fur seal and its application on enzyme immunohistochemistry. Pesquisa Veterinária Brasileira, v. 31, n. 3, p. 267-270, MAR 2011. (06/05896-9)

DA SILVA, ANA PAULA; MACHADO, ALEX S. D.; LE BAS, ALFREDO E.; SILVA, RODRIGO G.; DOS ANJOS SILVA, ELIZANGELA; HERNANDEZ-BLAZQUEZ, FRANCISCO J.. The skin structures and their role in the thermoregulation of the South American fur seal (Arctocephalus australis). Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology, v. 303, n. 12, JAN 2020. (06/05970-4, 06/05896-9)