Abstract：
We used histological and morphometric methods to study the testis and associated glands, including the epididymis, ductus deferens, and renal sexual segment (RSS), of specimens of Basiliscus vittatus sampled from Tabasco, Mexico (17.5926° N, 92.5816° W). Samples were collected throughout 1 year, which included the dry (February to May) and rainy (June to January) seasons. Spermatogenesis in B. vittatus is active throughout the year, but a significant increase in the testicular volume, diameters of seminiferous tubules, height of the germinal epithelium, spermiogenesis, and released spermatozoa occur in the dry season. During the rainy season, all aforementioned parameters decreased except the secretory activity of the epididymis and the RSS, which increased concomitant with an increase of the spermatozoa population within the ductus deferens. These data strongly suggest that B. vittatus reproduce year-round, but males exhibit a peak in spermatogenic activity during the dry season and a peak in insemination and/or copulation at the beginning of the rainy season. We highlight the importance of analyzing not only the testis but also accessory ducts and glands when determining the reproductive cycles of reptiles. The reproductive cycle of B. vittatus is discussed in relation to the environmental conditions of Southern Mexico and is compared to that of other squamates.
摘要：
我们使用组织学和形态计量学方法来研究睾丸和相关腺体，包括附睾,输精管,和肾性段（RSS），从塔巴斯科州取样的巴利斯库斯·维塔斯的标本，墨西哥(17.5926°N,92.5816°W)。在1年内收集样本，其中包括干燥（2月至5月）和多雨（6月至1月）季节。维生素B.的精子发生全年活跃，但是睾丸体积显著增加，生精细管的直径，生发上皮的高度，精子发生，释放的精子出现在旱季。在雨季,除附睾和RSS的分泌活性外，上述所有参数均下降，随着输精管内精子数量的增加而增加。这些数据有力地表明，B.vittatus全年繁殖，但是雄性在旱季出现生精活动高峰，在雨季开始时出现授精和/或交配高峰。在确定爬行动物的生殖周期时，我们强调了不仅分析睾丸而且分析附属导管和腺体的重要性。结合墨西哥南部的环境条件讨论了B.vittatus的生殖周期，并将其与其他鳞茎进行了比较。
