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Aspidoscelis costatus costatus (Squamata, Teiidae): high elevation clutch production for a population of whiptail lizards
Herpetozoa ( IF 0.8 ) Pub Date : 2020-07-31 , DOI: 10.3897/herpetozoa.33.e54901
Gisela Granados-González , Carlos Pérez-Almazán , Aldo Gómez-Benitez , James Martin Walker , Oswaldo Hernández-Gallegos

Clutch size and number of clutches per reproductive cycle are important life history traits that can be influenced by anatomical, physiological, evolutionary, and ecological factors. This report on the clutch size and number of clutches of an endemic Mexican whiptail lizard, Aspidoscelis costatus costatus (Cope, 1878), is based on a study of population at an unusually high elevation for a member of this genus. The study site is located in Ixtapan de la Sal, southeastern Estado de México, Central Mexico, at 2090 m a.s.l. Lizards were sampled in June 2006, and from May to July 2007, where females of Aspidoscelis costatus costatus were collected by hand along a drift fence. Female reproductive condition was evaluated based on abdominal palpation for presence of developing eggs; clutch size was determined by actual counts of either vitellogenic follicles or oviductal eggs. The smallest reproductive female was 77 mm snout-vent length; females produced a minimum of two clutches during the breeding season, the mean clutch size of 6.5 eggs (n = 33) was one of the largest reported for the genus. However, both length and width of its eggs, and the relative clutch mass have not been diminished by development of a large clutch. Additionally, comparisons of clutch size were undertaken within the polytypic A. costatus complex, within the genus Aspidoscelis, and between certain genera of whiptail lizards. This apparently represents the first study of whiptail lizards (genus Aspidoscelis), assessing the aforementioned reproductive characteristics, in a population above 2000 m.

中文翻译:

Aspidoscelis costatus costatus(Te科,Squamata):elevation纹蜥蜴种群的高海拔离合器生产

离合器的大小和每个生殖周期的离合器数量是重要的生活史特征,可能会受到解剖,生理,进化和生态因素的影响。这份关于墨西哥地方性凤尾蜥(Aspidoscelis costatus costatus)的离合大小和离合数的报告(Cope,1878年)是基于对这一属中一个高海拔人群的研究得出的。研究地点位于墨西哥中部埃斯塔多德墨西哥东南部的伊斯塔潘德拉萨尔(Ixtapan de la Sal),于2006年6月对蜥蜴进行了2090 m采样,从2007年5月至2007年7月,沿一条漂流道手工采集了滨海天牛的雌性。栅栏。根据腹部触诊评估是否有发育中的卵,从而确定女性的生殖状况;离合器的大小由卵黄卵泡或输卵管卵的实际计数确定。最小的雌性繁殖鼻长为77毫米。雌性在繁殖季节至少要产两个离合器,平均离合器大小为6.5个卵(n = 33),是该属中最大的离合器之一。但是,鸡蛋的长度和宽度,以及相对的离合器质量都没有因开发大型离合器而减少。另外,在多型拟南曲霉复合体,蛇形藻属内以及某些鞭尾蜥蜴之间进行了离合器大小的比较。显然,这是对2000 m以上种群的鲸纹蜥蜴(斜纹夜蛾属)的首次研究,评估了上述繁殖特征。最小的雌性繁殖鼻长为77毫米。雌性在繁殖季节至少生产了两个离合器,平均离合器大小为6.5卵(n = 33),是该属中最大的离合器之一。但是,鸡蛋的长度和宽度,以及相对的离合器质量都没有因开发大型离合器而减少。另外,在多型拟南曲霉复合体,蛇形藻属内以及某些鞭尾蜥蜴之间进行了离合器大小的比较。显然,这是对2000 m以上种群的环纹蜥蜴(Aspidoscelis属)的首次研究,评估了上述繁殖特征。最小的雌性繁殖鼻长为77毫米。雌性在繁殖季节至少生产了两个离合器,平均离合器大小为6.5卵(n = 33),是该属中最大的离合器之一。但是,鸡蛋的长度和宽度,以及相对的离合器质量都没有因开发大型离合器而减少。另外,在多型拟南曲霉复合体,蛇形藻属内以及某些鞭尾蜥蜴之间进行了离合器大小的比较。显然,这是对2000 m以上种群的环纹蜥蜴(Aspidoscelis属)的首次研究,评估了上述繁殖特征。5个卵(n = 33)是该属中报道的最大卵之一。但是,鸡蛋的长度和宽度,以及相对的离合器质量都没有因开发大型离合器而减少。另外,在多型拟南曲霉复合体,蛇形藻属内以及某些鞭尾蜥蜴之间进行了离合器大小的比较。显然,这是对2000 m以上种群的环纹蜥蜴(Aspidoscelis属)的首次研究,评估了上述繁殖特征。5个卵(n = 33)是该属中报道的最大卵之一。但是,鸡蛋的长度和宽度,以及相对的离合器质量都没有因开发大型离合器而减少。另外,在多型拟南曲霉复合体,蛇形藻属内以及某些鞭尾蜥蜴之间进行了离合器大小的比较。显然,这是对2000 m以上种群的环纹蜥蜴(Aspidoscelis属)的首次研究,评估了上述繁殖特征。和某些种类的马尾蜥蜴之间。显然,这是对2000 m以上种群的环纹蜥蜴(Aspidoscelis属)的首次研究,评估了上述繁殖特征。和某些种类的马尾蜥蜴之间。显然,这是对2000 m以上种群的环纹蜥蜴(Aspidoscelis属)的首次研究,评估了上述繁殖特征。
更新日期:2020-07-31
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