A influência da testosterona nas glândulas reprodutivas acessórias de Artibeus planirostris (Chiroptera: Phyllostomidae)

• Autor(a) principal: Puga, Cintia Cristina Isicawa [UNESP]
• Data de Publicação: 2015
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/127762
• topic: Biologia; Morcego - São José do Rio Preto; Castração; Testosterona; Próstata

Chiroptera is the second largest order of mammals. This presents different reproductive strategies with some unique characteristics. However, there are very few reports related to the accessory reproductive glands (GRAs) of Brazilian bats. Artibeus planirostris (Phyllostomidae: Chiroptera) has a prostatic complex comprised of two regions (ventral and dorsal) and a pair of bulbourethral glands. The prostatic complex of this species shows variations during the year in: weight, epithelial height, percentage of components glands (lumen, epithelium and stroma), the amount of cells: positive androgen receptor and proliferation and death, as well as variations hormonal. Indicating that testosterone levels influence these variations. Castration (testosterone suppression) and subsequent supplementation of this hormone may elucidate the relationship of the GRAs with testosterone. Thus, the aim of this study was to evaluate the effect of castration and testosterone supplementation in GRA of A. planirostris. The animals were collected in the city of São José do Rio Preto, in the northwest of São Paulo State, Brazil. The captures were concentrated in the summer (21 st December to 21st March) in order to minimize variations arising from seasonality. The bats were aged as adults based on body weight, complete ossification of the metacarpalphalangeal epiphyses, wear of the teeth, positioning of the testes and the presence of sperm inside the testes, cauda epididymis and/or urethra. Thus, forty-six sexually male mature specimens were analyzed. Eight groups were formed: I) 3 days castrated (CA3d, n=7); II) 3 days control (CO3d, n=4); III) 15 days castrated (CA15d, n=7); IV) 15 days control (CO15d, n=5); V) 15 days castrated with testosterone cypionate (1µg/Kg/day) repositioned for 3 days (T3d, n=7); VI) 15 days castrated with testosterone cypionate (1µg/Kg/day) repositioned for 7 days (T7d, n=7); VII) Control of...