首页> 外文期刊>Transactions of the Nebraska Academy of Sciences >ECOLOGY OF GROWTH OF THE HIGH ALTITUDE LIZARD SCELOPORUS GRAMMICUS ON THE EASTERN SLOPE OF IZTACCIHUATL VOLCANO, PUEBLA, MEXICO
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ECOLOGY OF GROWTH OF THE HIGH ALTITUDE LIZARD SCELOPORUS GRAMMICUS ON THE EASTERN SLOPE OF IZTACCIHUATL VOLCANO, PUEBLA, MEXICO

机译:墨西哥伊斯卡奇瓦特火山东坡高海拔蜥蜴纲目RAM的生长生态

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Growth in the lizard Sceloporus grammicus living at two altitudes on the Iztaccihuatl Volcano, Puebla, Mexico, was studied from November 1984 to January 1992. Despite differences in the environmental conditions at these two elevations, individual lizards grew at similar rates at both study sites. Females in both populations grew slower and attained asymptotic size earlier in life than males (0.0025 mm per day and 49.7 mm snout-vent length for females vs. 0.0027 mm per day 53.2 mm snout-vent length for males). Maximum growth rates were observed early in life in both sexes and sites. Growth in Sceloporus grammicus fits the von Bertalanffy growth model from 0 to 1.5 yrs. of age. Initial growth rates were between 0.10 and 0.15 mm per day in both sexes and aites. Rates decreased to less than 0.02 mm per day at maturity at both sites. Differential investment in feeding activities, social interactions and thermoregulation, differ-ences in the number of predators and competitors, and ab-sence of a hibernation period at both study sites are possible explanations for similar growth rates at both sites.
机译:1984年11月至1992年1月,研究了居住在墨西哥普埃布拉州伊兹塔奇瓦特火山上两个海拔高度的蜥蜴蜥蜴的生长。尽管这两个海拔高度的环境条件不同,但在两个研究地点,单个蜥蜴的生长速度都相似。两种种群中的雌性都比雄性增长得慢,并且达到了渐近大小(雌性每天0.0025毫米,吻合口长度为49.7毫米,雄性每天0.0027毫米,吻合口长度为53.2毫米)。在生命的早期,无论性别还是地点都可以看到最大的增长率。革螺线虫的生长符合von Bertalanffy的0至1.5年生长模型。年龄。无论男女,初始生长速度都在每天0.10至0.15毫米之间。在两个地点,成熟期的日产卵率均降至每天0.02毫米以下。两个研究地点在饲养活动,社会互动和体温调节方面的差异投资,捕食者和竞争者数量的差异以及两个研究阶段都没有冬眠期,这可能是两个地点增长率相似的原因。

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