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.

中文翻译：

---

墨西哥南部塔巴斯科州棕色蛇怪 Basiliscus vittatus（有鳞目：Corytophanidae）的雄性生殖周期

我们使用组织学和形态测量方法来研究睾丸和相关腺体，包括附睾、输精管和肾性段 (RSS)。绿蜥蜴采样自墨西哥塔巴斯科州（北纬 17.5926°，西经 92.5816°）。样品采集全年，包括旱季（二月至五月）和雨季（六月至一月）。精子发生在B. vittatus全年都很活跃，但在旱季，睾丸体积、曲细精管直径、生发上皮高度、精子发生和释放的精子显着增加。在雨季期间，除了附睾和RSS的分泌活性随着输精管内精子数量的增加而增加之外，所有上述参数均下降。这些数据强烈表明B. vittatus全年繁殖，但雄性在旱季表现出生精活动的高峰，在雨季开始时表现出授精和/或交配的高峰。我们强调在确定爬行动物的生殖周期时不仅分析睾丸，而且分析辅助导管和腺体的重要性。生殖周期B. vittatus讨论了墨西哥南部的环境条件，并与其他有鳞动物进行了比较。