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A new species of Mountain Dragon (Reptilia: Agamidae: Diploderma) from the D. dymondi complex in southern Sichuan Province, China.

ABSTRACT: Mountain Dragons of the genus Diploderma Hallowell, 1861 were recently resurrected from the paraphyletic genus Japalura sensu lato (Wang et al., 2019a). Despite the recent split, Diploderma still represents one of the most diverse groups of agamid lizard from Asia, including 25 species recognized currently, with most species found in China ((Wang et al., 2019a, 2019b). Although increasing attention has been paid to cryptic diversity within the genus in Southwest China during the past decade, most studies have focused on a single species complex, D. flaviceps, only (Manthey et al., 2012; Wang et al., 2015, 2016, 2017, 2019a), with few studies on other congeners that also have widespread distributions. One such example is D. dymondi (Boulenger, 1906).

SUBMITTER: Wang K

PROVIDER: S-EPMC6755113 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature

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A new species of Mountain Dragon (Reptilia: Agamidae: Diploderma) from the D. dymondi complex in southern Sichuan Province, China.

Wang Kai K Wu Jia-Wei JW Jiang Ke K Chen Jin-Min JM Miao Ben-Fu BF Siler Cameron D CD Che Jing J

Zoological research 20190901 5

Mountain Dragons of the genus Diploderma Hallowell, 1861 were recently resurrected from the paraphyletic genus Japalura sensu lato (Wang et al., 2019a). Despite the recent split, Diploderma still represents one of the most diverse groups of agamid lizard from Asia, including 25 species recognized currently, with most species found in China ((Wang et al., 2019a, 2019b). Although increasing attention has been paid to cryptic diversity within the genus in Southwest China during ...[more]

PMID: 31502428

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Project description:BackgroundUnderstanding altitudinal patterns of biological diversity and their underlying mechanisms is critically important for biodiversity conservation in mountainous regions. The contribution of area to plant diversity patterns is widely acknowledged and may mask the effects of other determinant factors. In this context, it is important to examine altitudinal patterns of corrected taxon richness by eliminating the area effect. Here we adopt two methods to correct observed taxon richness: a power-law relationship between richness and area, hereafter "method 1"; and richness counted in equal-area altitudinal bands, hereafter "method 2". We compare these two methods on the Jade Dragon Snow Mountain, which is the nearest large-scale altitudinal gradient to the Equator in the Northern Hemisphere.ResultsWe find that seed plant species richness, genus richness, family richness, and species richness of trees, shrubs, herbs and Groups I-III (species with elevational range size <150, between 150 and 500, and >500 m, respectively) display distinct hump-shaped patterns along the equal-elevation altitudinal gradient. The corrected taxon richness based on method 2 (TRcor2) also shows hump-shaped patterns for all plant groups, while the one based on method 1 (TRcor1) does not. As for the abiotic factors influencing the patterns, mean annual temperature, mean annual precipitation, and mid-domain effect explain a larger part of the variation in TRcor2 than in TRcor1.ConclusionsIn conclusion, for biodiversity patterns on the Jade Dragon Snow Mountain, method 2 preserves the significant influences of abiotic factors to the greatest degree while eliminating the area effect. Our results thus reveal that although the classical method 1 has earned more attention and approval in previous research, method 2 can perform better under certain circumstances. We not only confirm the essential contribution of method 1 in community ecology, but also highlight the significant role of method 2 in eliminating the area effect, and call for more application of method 2 in further macroecological studies.

Dataset Information

A new species of Mountain Dragon (Reptilia: Agamidae: Diploderma) from the D. dymondi complex in southern Sichuan Province, China.

Publications

A new species of Mountain Dragon (Reptilia: Agamidae: <i>Diploderma</i>) from the <i>D. dymondi</i> complex in southern Sichuan Province, China.

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