Mayor P, Bodmer R E, Schettini L, Mariño G O, López-Béjar M
Department of Animal Health and Anatomy, Faculty of Veterinary, Autonomous University of Barcelona, Bellaterra, E-08193 Barcelona, Spain.
Anat Histol Embryol. 2009 Nov;38(6):467-74. doi: 10.1111/j.1439-0264.2009.00976.x. Epub 2009 Sep 28.
This study examined the anatomical and histological characteristics of the genital organs of the female white-lipped peccary in the wild in different reproductive stages, collected by rural hunters in the North-eastern Peruvian Amazon. Mean ovulation rate was 2.12 +/- 0.83 follicles and litter size was 1.78 +/- 0.41 embryos or fetuses per pregnant female, resulting in a low rate of reproductive wastage, averaging 0.33 +/- 0.66 (16.04%) oocytes or embryos per pregnancy. The ovulation rate and the anatomical performance of the uterus could limit the prolificacy of this species. Females in follicular phase showed follicular waves suggesting the synchronous growth of a cohort of follicles. Different uterine and vaginal epithelium features changed in accordance with the reproductive state of the female. Pregnant females and females in the luteal phase presented a significant proliferation of endometrial uterine glands, characterized by hyperplasia and branching of endometrial glands, and increase in the proportion of cervical epithelial cells with periodic acid-schiff (PAS)-positive granules compared with that in females in the follicular phase. Females in the follicular phase showed a more developed vaginal epithelium (in thickness and in layer composition) than females in the luteal phase and pregnant females.
本研究对秘鲁东北部亚马逊地区乡村猎人捕获的处于不同生殖阶段的野生雌性白唇西猯的生殖器官进行了解剖学和组织学特征分析。平均排卵率为2.12±0.83个卵泡，每只怀孕雌性的窝仔数为1.78±0.41个胚胎或胎儿，导致生殖浪费率较低，每次怀孕平均为0.33±0.66个（16.04%）卵母细胞或胚胎。排卵率和子宫的解剖学表现可能会限制该物种的繁殖力。处于卵泡期的雌性表现出卵泡波，提示一组卵泡同步生长。不同的子宫和阴道上皮特征会根据雌性的生殖状态而变化。怀孕雌性和处于黄体期的雌性子宫内膜子宫腺显著增殖，其特征为子宫内膜腺增生和分支，与处于卵泡期的雌性相比，宫颈上皮细胞中高碘酸-希夫（PAS）阳性颗粒的比例增加。处于卵泡期的雌性比处于黄体期的雌性和怀孕雌性具有更发达的阴道上皮（在厚度和层组成方面）。
