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首页> 外文期刊>Herpetologica >Altitudinal variation in the age at maturity, longevity, and reproductive lifespan of anurans in subtropical queensland
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Altitudinal variation in the age at maturity, longevity, and reproductive lifespan of anurans in subtropical queensland

机译：亚热带昆士兰无脊椎动物的成熟，寿命和生殖寿命的年龄变化

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摘要

Skeletochronology has been widely and successfully used to age temperate amphibians, enabling geographic comparisons of longevity and the age at maturity. To date, however, there have been very few similar studies conducted using skeletochronology in tropical or sub-tropical amphibians. In this study, we examined the applicability of skeletochronology for aging four sub-tropical anuran species (Litoria chloris, L. lesueuri, L. pearsoniana, and Mixophyes fleayi) that occur across a range of altitudes in southeast Queensland, Australia. We then used reliable estimates to examine altitudinal variation in longevity, age at maturity (AM), and potential reproductive lifespan (PRLS) for each species. Skeletochronology was successful in three of the four species. The age of L. lesueur! individuals from low altitude sites could not be reliably estimated due to extended activity seasons. On average, females were older than males in L. chloris, L. pearsoniana, and M. fleayi and were also older when breeding for the first time. There was, however, no significant difference in the PRLS between males and females within any of the three species. There were trends towards greater longevity and older AM in high altitude populations of all three species; however, there was no significant altitudinal variation in PRLS in any of the species. Our results suggest little intraspecific variation in the number of years that individuals of the four species are capable of breeding, regardless of gender, geographic location, longevity, and AM.
机译：骨骼年代学已被广泛且成功地用于对温带两栖动物进行年龄鉴定，从而可以对寿命和成熟年龄进行地理比较。然而，迄今为止，在热带或亚热带两栖动物中使用骨骼年代学进行的类似研究很少。在这项研究中，我们研究了骨骼年代学在澳大利亚昆士兰东南部不同海拔范围内发生的四种亚热带无环物种（Litoria chloris，L。lesueuri，L。pearsoniana和Mixophyes fleayi）老化的适用性。然后，我们使用可靠的估算来检查每种物种的寿命，成熟年龄（AM）和潜在生殖寿命（PRLS）的垂直变化。骨骼年代学在四个物种中的三个中很成功。 L. lesueur的年龄！由于活动季节延长，无法可靠地估算出来自低海拔地点的人。平均而言，在绿藻（L. chloris），梨木（L. pearsoniana）和跳蚤（M. fleayi）中，雌性比雄性年龄大，并且在首次育种时也年龄较大。但是，在这三个物种中，雄性和雌性之间的PRLS没有显着差异。这三种物种的高海拔种群都有长寿和AM增高的趋势。但是，在任何物种中，PRLS的海拔高度均无明显变化。我们的结果表明，这四个物种的个体能够繁殖的年限几乎没有种内差异，而不论性别，地理位置，寿命和增幅。

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