Artificial insemination in black-handed spider monkey (Ateles geoffroyi).
Theriogenology
; 67(2): 399-406, 2007 Jan 15.
Article
em En
| MEDLINE
| ID: mdl-17023040
Artificial insemination (AI) was performed in spider monkeys; these primates are vulnerable to extinction and usually do not reproduce spontaneously in captivity. Uterine cycles were followed by daily assessment of vaginal cytology, and corroborated a posteriori by concentrations of 17-beta estradiol and progesterone, measured by radioimmunoassay (RIA), in fecal samples collected once daily. Five females between 13 to 27 years old were inseminated intravaginally (with fresh semen) twice each during the periovulatory phase (Days 9-12 of the menstrual cycle; Day 0, first day of menstrual bleeding), from September to the first 3 weeks of November (most fertile months). Transcervical AI was not useful in this primate because the liquid portion of the semen completely solidified instead of liquefying as in other primates. Pregnancies were apparently achieved in 5 of 14 attempts. One female became pregnant after the first round of inseminations, delivered a healthy infant, was inseminated and got pregnant again (subsequently aborted). One female aborted, apparently due to an intramural uterine leiomyoma. Another two females stopped menstruating for a few months, then restarted menstruating (these females may have been pregnant and aborted). In conclusion, in spider monkeys: (1) captivity-induced stress did not inhibit reproduction; (2) fecal steroid hormones were useful to assess cyclicity; (3) the semen coagulum, which apparently is a tightly packed and large reservoir of spermatozoa, must not be discarded but used in AI; (4) old female spider monkeys did not have cessation of reproductive function.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Reprodução
/
Sêmen
/
Inseminação Artificial
/
Aborto Animal
/
Atelinae
Tipo de estudo:
Etiology_studies
Limite:
Animals
/
Pregnancy
Idioma:
En
Revista:
Theriogenology
Ano de publicação:
2007
Tipo de documento:
Article
País de afiliação:
México
País de publicação:
Estados Unidos