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題名 | Sexual Size Dimorphism and Microhabitat Use of Two Sympatric Lizards, Sphenomorphus Taiwanensis and Takydromus Hsuehshanensis, from the Central Highlands of Taiwan=臺灣中部高海拔區同域分布之臺灣蜓蜥和雪山草蜥雌雄異型與微棲地利用之研究 |
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作者 | 黃文山; | 書刊名 | 動物研究學刊 |
卷期 | 37:4 1998.10[民87.10] |
頁次 | 頁302-308 |
分類號 | 388.7921 |
關鍵詞 | 同域分布; 蜥蜴; 雌雄異型; 有鱗目; 臺灣; Syntopic; Lizards; Sexual size difference; Squamata; Taiwan; |
語文 | 英文(English) |
中文摘要 | 本研究描述臺灣中部高海拔區同域分佈之臺灣蜓蜥和雪山草蜥雌雄異型及其微棲 地利用。臺灣蜓蜥成熟雌性之體長大於雄性。而雪山草蜥雌雄體長卻無顯著差異。兩種蜥蜴 的雄性頭部形值皆比雌性大。而雪山草蜥的體長或頭部形值都比臺灣蜓蜥大。兩種蜥蜴重疊 使用微棲地。雪山草蜥主要出現於高麗菜田;而臺灣蜓蜥出現於岩石區。兩種蜥蜴各自之雌 雄微棲地利用並無顯著差異。雪山草蜥和臺灣蜓蜥對微棲地的喜好可能與體型有關;前者的 前腳較長可允許較大的運動能力。造成五種同域分布的蜥蜴體長雌雄異型的因子在此一併討 論。 |
英文摘要 | Sexual size dimorphism and microhabitat use of 2 syntopic lizards, Sphenomorphus taiwanensis and Takydromus hsuehshanensis, from the central highlands of Taiwan are examined. Adult S. taiwanensis females attain a larger body size than do males, but in T. hsuehshanensis, body size shows no significant difference between sexes. Head sizes of males are larger than those of females in both species. All morphological traits of T. hsuehshanensis are larger than those of S. taiwanensis. The 2 species differ considerably in microhabitat use horizontally. T. hsuehshanensis was collected predominantly in cultivated land of Brassica oleracea capitata, while S. taiwanensis was found mainly in a saxicolous area. Neither T. hsuehshanensis nor S. taiwanensis shows significant differences in microhabitat utilization between sexes. Morphological differences were observed between the 2 species, and these are presumably associated with their differential microhabitat preferences. The longer forehand of T. hsuehshanensis allows a greater degree of locomotor activity. Causality of snout-vent length dimorphism of 5 sympatric lizards are also discussed. |
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