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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
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Your Position :Home->Past Journals Catalog->2019 Vol.38 No.2

Comparison of Body Size of Turtles in Different Habitats
Author of the article:XIAO Fanrong, WANG Jichao, SHI Haitao*
Author's Workplace:Ministry of Education Key Laboratory for Ecology of Tropical Islands, College of Life Sciences, Hainan Normal University, Haikou 571158, China
Key Words:turtle; body size; habitat
Abstract:Body size is important to animals because it can affect the habitat use of animals. We collected body size (maximum carapace length) data of 331 turtle species from published literatures which accounted for 98.8% of all 335 turtle species. To understand the evolution of body size, the collected turtle species were divided into 4 habitat types (marine, freshwater, island and mainland), and the freshwater species were further divided into 5 subtypes (large lentic, large lotic, small lentic, small lotic, and all water bodies), and the mainland species were divided into 3 subtypes (highland, lowland and wilderness). The results of generalized linear mixed model showed that sea turtles had the largest body size on average (134.86 cm±70.14 cm), while freshwater turtles (32.60 cm±20.57 cm) and mainland tortoises (27.08 cm±15.77 cm) had the smallest. Island tortoises were intermediate in body size (80.05 cm±37.11 cm). There were no significant differences of body size between the freshwater turtles and mainland tortoises. Moreover, body size was positively correlated with the total area of water bodies in habitat subtypes for freshwater turtles, because the body size of turtles from large lentic (50.30 cm±27.03 cm) and large lotic water bodies (39.86 cm±20.34 cm) were larger than those from small lentic (23.78 cm±7.47 cm) and small lotic water bodies (23.79 cm±10.57 cm), whereas there were no significant differences in turtle body sizes between the large lotic and lentic water bodies as well as between the small lotic and lentic water bodies. However, the freshwater turtles inhabited in all water bodies were intermediate in body size (41.50 cm±32.65 cm) compared to the 4 habitat subtypes as described above. Although there was a trend towards larger body size from highland (24.86 cm±10.09 cm) to lowland (26.15 cm±20.12 cm), and from lowland to wilderness (39.11 cm±19.43 cm) in mainland tortoises, there were also no significant differences among these habitat subtypes. This study indicated that conservation strategies for turtles should be considered in relation to their body size and habitat area.
2019,38(2): 172-178 收稿日期:2018-08-21
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