Reproduction in the bushmaster (Lachesis muta): uterine muscular coiling and female sperm storage


Publication type
Article
Appears in Collections:
Metrics
Abstract
Prolonged sperm storage in the female reproductive tract is a widespread strategy among vertebrates. In reptiles, especially lizards and snakes, females have specialized structures to store sperm in their oviduct, which occur in the posterior infundibulum and the nonglandular uterus. Many viperids exhibit uterine muscular coiling (UMC) in the nonglandular uterus, and this modification has been proposed as an ancestral trait in this taxon to store sperm. However, UMC and oviductal sperm storage have not been reported in Lachesis. Here, we studied the reproductive tract of L. muta females using histological techniques and describe, for the first time, the occurrence of oviductal sperm storage and UMC in nonglandular uterus of this species. We also describe an increase in secretory activity in the oviduct throughout the reproductive cycle. Our results support the hypothesis that UMC is an ancestral character in Viperidae and suggest that female L. muta must store sperm in the oviduct to fertilize the oocytes. We also propose new hypotheses for reproductive strategies of L. muta in nature.
Reference
Souza E, Almeida-Santos SM. Reproduction in the bushmaster (Lachesis muta): Uterine muscular coiling and female sperm storage. Acta Zool.. 2020 Dec;in press. doi:10.1111/azo.12369.
Link to cite this reference
https://repositorio.butantan.gov.br/handle/butantan/3431
Journal title
Issue Date
2020


Files in This Item:

Existing users please Login
10.1111azo.12369.pdf
Description:
Size: 3.14 MB
Format: Adobe PDF
Embargoed until January 1, 2999    Request a copy
Show full item record

The access to the publications deposited in this repository respects the licenses from journals and publishers.