Husbandry, Captive Breeding, and Field Survey of Chinese Giant Salamander (Andrias davidianus)

Jiang, Weixing; Tian, Huanfang; Zhang, Lu

doi:10.1007/978-1-0716-2659-7_4

Cited by 4 publications

(2 citation statements)

References 16 publications

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“…As salamanders are nationally protected animals, we did not collect specimens. For some larvae which were difficult to identify, non-invasive DNA sampling methods were employed [44], and DNA samples were sequenced for molecular identification.…”

Section: Field Surveysmentioning

confidence: 99%

Impact of Climate Change on the Distribution of Three Rare Salamanders (Liua shihi, Pseudohynobius jinfo, and Tylototriton wenxianensis) in Chongqing, China, and Their Conservation Implications

Ma,

Wan,

Shi

et al. 2024

Animals

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The Wushan Salamander (Liua shihi), Jinfo Salamander (Pseudohynobius jinfo), and Wenxian Knobby Salamander (Tylototriton wenxianensis) are rare national Class II protected wild animals in China. We performed MaxEnt modeling to predict and analyze the potential distribution and trends of these species in Chongqing under current and future climate conditions. Species distribution data were primarily obtained from field surveys, supplemented by museum collections and the existing literature. These efforts yielded 636 records, including 43 for P. jinfo, 23 for T. wenxianensis, and 570 for L. shihi. Duplicate records within the same 100 m × 100 m grid cell were removed using ENMTools, resulting in 10, 12, and 58 valid distribution points for P. jinfo, T. wenxianensis, and L. shihi, respectively. The optimization of feature class parameters (FC) and the regularization multiplier (RM) were applied using R package “ENMeval 2.0” to establish the optimal model with MaxEnt. The refined models were applied to simulate the suitable distribution areas for the three species. The results indicate that the current suitable habitat area for L. shihi accounted for 9.72% of the whole region of the Chongqing municipality. It is projected that, by 2050, the proportion of suitable habitat will increase to 12.54% but will decrease to 11.98% by 2070 and further decline to 8.80% by 2090. The current suitable habitat area for P. jinfo accounted for 1.08% of the whole region of the Chongqing municipality, which is expected to decrease to 0.31%% by 2050, 0.20% by 2070, and 0.07% by 2090. The current suitable habitat area for T. wenxianensis accounted for 0.81% of the whole region of the Chongqing municipality, which is anticipated to decrease to 0.37% by 2050, 0.21% by 2070, and 0.06% by 2090. Human disturbance, climate variables, and habitat characteristics are the primary factors influencing the distribution of three salamander species in Chongqing. The proximity to roads significantly impacts L. shihi, while climate conditions mainly affect P. jinfo, and the distance to water sources is crucial for T. wenxianensis. The following suggestions were made based on key variables identified for each species: (1) For L. shihi, it is imperative to minimize human disturbances and preserve areas without roads and the existing vegetation within nature reserves to ensure their continued existence. (2) For P. jinfo, the conservation of high-altitude habitats is of utmost importance, along with the reduction in disturbances caused by roads to maintain the species’ ecological niche. (3) For T. wenxianensis, the protection of aquatic habitats is crucial. Additionally, efforts to mitigate the impacts of road construction and enhance public awareness are essential for the preservation of this species and the connectivity of its habitats.

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Section: Field Surveysmentioning

confidence: 99%

Impact of Climate Change on the Distribution of Three Rare Salamanders (Liua shihi, Pseudohynobius jinfo, and Tylototriton wenxianensis) in Chongqing, China, and Their Conservation Implications

Ma,

Wan,

Shi

et al. 2024

Animals

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“…Belonging to the order Amphibia, suborder Caudata, and family Cryptobranchidae, it is the largest amphibian in the world and endemic to China. Historically, this species was widespread across the mountainous areas of the Yellow River Basin, the Yangtze River Basin, and the Pearl River system [3][4][5], particularly inhabiting water systems that include underground rivers and surface aquatic networks in limestone and karst regions [6]. In recent decades, the wild populations of A. davidianus have sharply declined due to continuous environmental deterioration and poaching within its natural habitat, leading to infrequent encounter rates [7,8].…”

Section: Introductionmentioning

confidence: 99%

Real-Time Monitoring on the Chinese Giant Salamander Using RPA-LFD

Ling,

Liang,

Wang

et al. 2024

IJMS

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The Chinese giant salamander (Andrias davidianus), listed as an endangered species under “secondary protection” in China, faces significant threats due to ecological deterioration and the expansion of human activity. Extensive field investigations are crucial to ascertain the current status in the wild and to implement effective habitat protection measures to safeguard this species and support its population development. Traditional survey methods often fall short due to the elusive nature of the A. davidianus, presenting challenges that are time-consuming and generally ineffective. To overcome these obstacles, this study developed a real-time monitoring method that uses environmental DNA (eDNA) coupled with recombinase polymerase amplification and lateral flow strip (RPA-LFD). We designed five sets of species-specific primers and probes based on mitochondrial genome sequence alignments of A. davidianus and its close relatives. Our results indicated that four of these primer/probe sets accurately identified A. davidianus, distinguishing it from other tested caudata species using both extracted DNA samples and water samples from a tank housing an individual. This method enables the specific detection of A. davidianus genomic DNA at concentrations as low as 0.1 ng/mL within 50 min, without requiring extensive laboratory equipment. Applied in a field survey across four sites in Huangshan City, Anhui Province, where A. davidianus is known to be distributed, the method successfully detected the species at three of the four sites. The development of these primer/probe sets offers a practical tool for field surveying and monitoring, facilitating efforts in population recovery and resource conservation for A. davidianus.

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Exploration of an eDNA procedure for surveying Chinese giant salamanders: a comparison with conventional field methods

Zhou,

Wang,

Zhang

et al. 2024

Biodivers Conserv

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Husbandry, Captive Breeding, and Field Survey of Chinese Giant Salamander (Andrias davidianus)

Cited by 4 publications

References 16 publications

Impact of Climate Change on the Distribution of Three Rare Salamanders (Liua shihi, Pseudohynobius jinfo, and Tylototriton wenxianensis) in Chongqing, China, and Their Conservation Implications

Impact of Climate Change on the Distribution of Three Rare Salamanders (Liua shihi, Pseudohynobius jinfo, and Tylototriton wenxianensis) in Chongqing, China, and Their Conservation Implications

Real-Time Monitoring on the Chinese Giant Salamander Using RPA-LFD

Exploration of an eDNA procedure for surveying Chinese giant salamanders: a comparison with conventional field methods

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