碩士 / 國立屏東科技大學 / 野生動物保育研究所 / 93 / The grey shrew (Crocidura attenuate) and the lesser white-toothed shrew (C. suaveolens) are both members of sub-family Crocidurinae (Order Insectivora, Family Soricidae). Ecological information of these two species are scarce and incomplete, and little research focus on their reproductive behaviour and seasonal effects on reproduction. Field research was conducted by consecutive trapping designs from March 2003 to April 2004 in NPUST located in southern Taiwan. Morphological measurements were taken from subjects of the Order Insectivora, and their sexual maturity was determined by histological studies.
During the study period, 88 grey shrews with 43 females and 45 males, and 93 lesser white -toothed shrews with 39 females and 54 males were captured. The rate of female to male of these two species was equal to 1:1. The results indicated that the grey shrew at lower elevation in southern Taiwan presented sexual dimorphism in both of weight and length, but not for lesser white-toothed shrew. Although the weather varied obviously through different season, both species were capable of breeding all-year-round based on the histological studies of generative organs. Pregnant females were only captured during the wet season, and corpus luteum was formed during the dry season. Therefore, adult females of both shrew species should be capable of reproduction during the dry season. Anyhow, the study underestimates their potential. Furthermore, the results indicated that both of the grey shrew and lesser white-toothed shrew were capable of reproduction all-year-sound at lower elevation in southern Taiwan.
| Identifer | oai:union.ndltd.org:TW/093NPUST746005 |
| Date | January 2005 |
| Creators | Kang, Hui-Ping, 康慧萍 |
| Contributors | Pei, Jai-Chyi, 裴家騏 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 66 |
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