Thermal preference of the yellow-margined box turtle (Cuora flavomarginata) (Testudines: Geoemydidae) inhabiting a mesic lowland forest, northern Taiwan

Chen, Tien Hsi; Lue, Kuang Yang

doi:10.1163/156853808786230451

Cited by 12 publications

(9 citation statements)

References 18 publications

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“…At Feitsui 227 turtles were captured a total of 892 times, of which 68.6% of the captured turtles had been marked during 1996–2000 (Chen & Lue, 1999, 2002). The proportions of unsexed juveniles and both sexes did not change significantly between 1996–2000 and 2002–2003 ( G = 0.90, P = 0.639).…”

Section: Resultsmentioning

confidence: 99%

“…At three of these localities (Feitsui, Keelung and Hushan) the survey was extensive (see below). C. flavomarginata had previously been studied in a tributary watershed at the Feitsui Reservoir Protected Area (Chen & Lue, 1999, 2002, 2008; Lue & Chen, 1999), which has been blocked from public access, to protect water resources, since 1984; this site provided an opportunity to examine any population changes over time. The habitat consists mainly of primary and secondary evergreen forests (see detailed description in Lue & Chen, 1999).…”

Section: Study Areamentioning

confidence: 99%

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Population status and distribution of the Endangered yellow-margined box turtle Cuora flavomarginata in Taiwan

Lin

et al. 2010

Oryx

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The Chelonia face an extinction crisis, particularly in Asia: unsustainable harvests, and habitat fragmentation and loss accompanying rapid urbanization and land development all pose threats to turtles. These threats are particularly acute for those species with a high commercial value such as the yellow-margined box turtle Cuora flavomarginata. Because of burgeoning demand in the food and pet markets, combined with extensive habitat loss, C. flavomarginata is categorized as Endangered on the IUCN Red List. To investigate the status and distribution of this species in Taiwan we conducted an extensive trapping survey in 2001-2008, locating a total of 527 different individuals at 23 sites. Our results show that C. flavomarginata is restricted to low-elevation forested hills. Populations in lowland areas may have been extirpated by land development. There are four clusters of localities in low-elevation primary and secondary forests, and some relatively large populations survive. However, capture success at most sites was low. In those sites where we trapped . 20 individuals, sex ratios were significantly skewed towards females and adults predominated. The most essential measure for the conservation of C. flavomarginata in Taiwan is to secure and preserve some relatively undisturbed habitats at low elevations.

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Section: Resultsmentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

Population status and distribution of the Endangered yellow-margined box turtle Cuora flavomarginata in Taiwan

Lin

et al. 2010

Oryx

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“…It is tempting to extrapolate our findings on a large evolutionary scale, suggesting that the evolutionary origin of nuptial gifts might have been followed by sex-specific shifts in thermal preferences toward warmer sites for gift recipients and cooler sites for gift donors. Unfortunately, it appears that sex differences in thermal preference have rarely been studied, and among the studies that have been performed, the evidence is biased toward some groups of animals, such as reptiles (e.g., [ 55 , 56 , 57 , 58 ], but see [ 59 , 60 ]). It is difficult to find relevant evidence in species who provide nuptial gifts.…”

Section: Discussionmentioning

confidence: 99%

Thermal Preferences of Cowpea Seed Beetles (Callosobruchus maculatus): Effects of Sex and Nuptial Gift Transfers

Małek

Czarnołęski

2021

Insects

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The thermal environment influences insect performance, but the factors affecting insect thermal preferences are rarely studied. We studied Callosobruchus maculatus seed beetles and hypothesized that thermal preferences are influenced by water balance, with individuals with limited water reserves preferring cooler habitats to reduce evaporative water loss. Adult C. maculatus, in their flightless morph, do not consume food or water, but a copulating male provides a female with a nuptial gift of ejaculate containing nutrients and water. We hypothesized that gift recipients would prefer warmer habitats than gift donors and that both sexes would plastically adjust their thermal preferences according to the size of the transferred gift. We measured the thermal preference in each sex in individuals that were mated once or were unmated. In the mated group, we measured the sizes of the nuptial gifts and calculated proportional body mass changes in each mate during copulation. Supporting the role of water balance in thermal preference, females preferred warmer habitats than males. Nevertheless, thermal preferences in either sex were not affected by mating status or gift size. It is likely that high rates of mating and gift transfers in C. maculatus living under natural conditions promoted the evolution of constitutive sex-dependent thermal preferences.

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“…Female C. flavomarginata tended to maintain higher shell surface temperature during the nesting season (May to July). In contrast, there were no obviously intersexual differences in the temperature prior to and after the nesting season (Chen and Lue 2008). Tsai (2007) also reported that the turtle stayed in bushes or litter layers and avoided open areas, such as forest gaps and areca palm plantations during the active period (March to October).…”

Section: 4mentioning

confidence: 99%

Cuora flavomarginata (Gray 1863) – Yellow-Margined Box Turtle

ota¹,

Yasukawa²,

Fu³

et al. 2009

Conservation Biology of Freshwater Turtles and Tortoises

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The yellow-margined box turtle, Cuora flavomarginata, (Family Geoemydidae), is a small species (carapace length to 190 mm), that occurs in eastern and southern continental China, Taiwan, and the southern Ryukyus of Japan. The species is mainly terrestrial and is found in and around primary and dense secondary forests, feeding on both small animals and plant materials, such as insects, earthworms, and berries. Clutch size usually ranges from one to four, and the female tends to be larger in body mass than the male, sometimes exceeding 1000 g. The yellow-margined box turtle is threatened by deforestation in its natural habitat, and large numbers have been exploited for food and traditional Chinese medicine and also exported from continental China for pets. This exploitation has caused the decline of many populations of this turtle. Capture and trade in Japanese and Taiwanese populations are currently regulated by national laws, but habitat destruction progresses in both countries. There is thus urgency that areas of habitat be set aside and protected. In order to devise effective conservation measures, it is also important to undertake research on life history and population status of the species; information on these aspects is insufficient, especially for the non-Taiwanese populations. distribution.-China (Continental), China (Taiwan), Japan. Distributed on Ishigakijima and Iriomotejima islands of the southern Ryukyu Archipelago (Japan), Taiwan, and Minjiang, Fuchun, and Yangtze River drainages of eastern continental China. sYnonYmY.-Cistoclemmys flavomarginata Gray 1863, Cuora flavomarginata, Terrapene flavomarginata, Cyclemys flavomarginata, Geoemyda flavomarginata, Cyclemys flavomarginata sinensis Hsü 1930, Terrapene culturalia Yeh 1961. subspecies.-Two currently recognized by us: Cuora flavomarginata flavomarginata (Common Yellow-Margined Box Turtle) (synonymy: Cyclemys flavomarginata flavomarginata, Cuora flavomarginata flavomarginata, Cistoclemmys flavomarginata flavomarginata, Cyclemys flavomarginata sinensis, Cuora flavomarginata sinensis, Cistoclemmys flavomarginata sinensis) and Cuora flavomarginata evelynae (Ryukyu Yellow-Margined Box Turtle) (synonymy: Cuora evelynae Ernst and Lovich 1990, Cistoclemmys flavomarginata evelynae). status.-IUCN 2009 Red List: Endangered (EN A1cd+2cd) (assessed 2000); CITES: Appendix II (as Cuora spp.). Figure 1. Cuora flavomarginata flavomarginata, adult female from Nantou, central Taiwan. Photo by Tien-Hsi Chen. 035.2 Conservation Biology of Freshwater Turtles and Tortoises • Chelonian Research Monographs, No. 5

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Thermal preference of the yellow-margined box turtle (Cuora flavomarginata) (Testudines: Geoemydidae) inhabiting a mesic lowland forest, northern Taiwan

Cited by 12 publications

References 18 publications

Population status and distribution of the Endangered yellow-margined box turtle Cuora flavomarginata in Taiwan

Population status and distribution of the Endangered yellow-margined box turtle Cuora flavomarginata in Taiwan

Thermal Preferences of Cowpea Seed Beetles (Callosobruchus maculatus): Effects of Sex and Nuptial Gift Transfers

Cuora flavomarginata (Gray 1863) – Yellow-Margined Box Turtle

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