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Grant number: 16/17158-4
Support Opportunities:Regular Research Grants
Duration: November 01, 2017 - April 30, 2020
Field of knowledge:Biological Sciences - Zoology
Principal Investigator:Ricardo Jose Garcia Pereira
Grantee:Ricardo Jose Garcia Pereira
Host Institution: Faculdade de Medicina Veterinária e Zootecnia (FMVZ). Universidade de São Paulo (USP). São Paulo , SP, Brazil


The Alagoas curassow (Pauxi mitu) is a pheasant-like bird from the Atlantic rain forest of the Northeastern Brazil that is considered extinct from the wild since 2004. In spite of the progress made in the last decades, in which total population increased from 3 individuals (1979) to nearly 170 (2015), its breeding program has struggled with serious problems regarding the founder population such as advanced age, prominent consanguinity, and high degree of hybridization with the razor-billed curassow (Pauxi tuberosa). This scenario emphasizes the importance of the reproductive biotechnologies for the genetic management of this species. Nevertheless, techniques that are well established in poultry (e.g. artificial insemination and semen cryopreservation) have limited applicability in cracids, and do not resolve issues as seminal quality in elder or infertile males. An alternative strategy to overcome some of these adversities is to preserve germplasm through intra or interspecific transplantation of germ cells. Recently, our research group demonstrated that transferring quail spermatogonia to prepubertal roosters led to complete restoration of the spermatogenesis, thus opening the perspective of using this tool in critical situations as in the Alagoas curassow case. Consequently, we aim to assess whether or not transferring spermatogonia from cracid species to recipient roosters will result colonization of the seminiferous tubules, and in case of donor-derived spermatogenesis, spermatozoa production. The data obtained here will serve as a starting point for the application of this approach in spreading genetic material of male Alagoas currasows considered old, subfertile or behaviorally inadequate. (AU)

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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)
BLANK, MARCEL H.; RUIVO, LOURENCO P.; NOVAES, GABRIEL A.; LEMOS, EVELYN C.; LOSANO, JOAO D. A.; SIQUEIRA, ADRIANO F. P.; PEREIRA, RICARDO J. G.. Assessing different liquid-storage temperatures for rooster spermatozoa. Animal Reproduction Science, v. 233, . (16/17158-4)
FREDIANI, MAYRA H.; GUIDA, FERNANDA J. V.; SALGADO, PAULA A. B.; GONCALVES, DEBORA R.; BLANK, MARCEL H.; NOVAES, GABRIEL A.; PEREIRA, RICARDO J. G.. Semen collection by electro-stimulation in a variety of bird orders. Theriogenology, v. 125, p. 140-151, . (16/17158-4, 12/08621-1)
BLANK, MARCEL HENRIQUE; SILVA, VICTOR CARVALHO; RUI, BRUNO ROGERIO; NOVAES, GABRIEL AUGUSTO; CASTIGLIONE, VIVIAN CARDOSO; GARCIA PEREIRA, RICARDO JOSE. Beneficial influence of fetal bovine serum on in vitro cryosurvival of chicken spermatozoa. CRYOBIOLOGY, v. 95, p. 103-109, . (16/17158-4, 17/19163-8)

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