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Re-evaluation of Amphibian Inventory in Sabah, Malaysia

马来西亚沙巴两栖动物库存重新评估

基本信息

批准号：
15370038
负责人：
MATSUI Masafami
金额：
$ 7.23万
依托单位：
Graduate School of Human and Environmental Studies, Kyoto University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

项目摘要

From 2003 to 2005, we carried out re-evaluation of amphibian inventory in the Crocker Range National Park, Tawau Hills Park, Tabin Wildlife Reserve, and Kinabalu National Park, Sabah, Malaysia, with the help of members of University Malaysia Sabah and Sabah Parks. As a result of our intensive field surveys, we found several undescibed species and many new records of distribution in all the regions surveyed. Acoustic information greatly contributed in increment of records, and learning frog voices proved to be a powerful tool to document local distributions. By the use of acoustic information, we succeeded in finding new Leptolalax species and ascertained distribution of a Megophrys from Sabah for the first time. Biochemical methods also contributed greatly in finding out undescribed cryptic species of Meristogenys and revising taxonomic status of Staurois species. This method also contributed in associating larvae and adults of Meristogenys, which has long been in confusion. Accumulation of comparable materials led to findings of cryptic species in the past, but we can apply acoustic and biochemical methods to re-evaluate anuran inventory now. We also made new findings in caecilians, and could observe egg brooding of Caudacaecilia for the first time, and could assess generic taxonomic status. Considering very limited areas we could survey within a wide range of the parks and reserve in the present study, much higher amphibian species diversity is highly expected in Sabah. From the accumulation curve of known amphibian taxa, the number of species/subspecies in Sabah is expected to further increase, and complete inventory will be not made in the near future. More intensive inventory of Sabah should be done by use of the methods employed in this survey, before habitats of these animals are lost.

从2003年到2005年，我们在马来西亚大学沙巴和沙巴公园的成员的帮助下，对克罗克山脉国家公园、斗湖山公园、塔宾野生动物保护区和沙巴的京那巴鲁国家公园的两栖动物清单进行了重新评估。通过深入的野外调查，我们在所调查的所有地区发现了几个未描述的种和许多新的分布记录。声学信息在记录的增量中有很大的贡献，学习蛙声被证明是记录局部分布的有力工具。利用声信息，我们成功地发现了新的细齿蟾属物种，并首次确定了一种大蟾属在沙巴的分布。生物化学方法在发现分生属未知种和修订十字星属种的分类地位方面也有很大贡献。这种方法也有助于将长期以来一直处于混乱状态的Meristogenys幼虫和成虫联系起来。在过去，可比材料的积累导致了神秘物种的发现，但我们现在可以应用声学和生物化学方法来重新评估无尾两栖动物的库存。我们还在无尾目中取得了新的发现，首次观察到尾目的卵育雏过程，并对其属的分类地位进行了评估。考虑到非常有限的地区，我们可以调查范围广泛的公园和保护区在本研究中，更高的两栖动物物种多样性是高度期望在沙巴。从已知两栖类类群的积累曲线来看，沙巴的种/亚种数量预计将进一步增加，近期不会进行完整的清查。在这些动物的栖息地丧失之前，应使用本次调查中采用的方法对沙巴进行更深入的清查。