57 Works

High temperatures and human pressures interact to influence mortality in an African carnivore

Daniella Rabaiotti, Rosemary Groom, J. W. McNutt, Jessica Watermeyer, Helen O'Neill & Rosie Woodroffe
1. The impacts of high ambient temperatures on mortality in humans and domestic animals are well understood. However much less is known about how hot weather affects mortality in wild animals. High ambient temperatures have been associated with African wild dog Lycaon pictus pup mortality, suggesting that high temperatures might also be linked to high adult mortality. 2. We analysed mortality patterns in African wild dogs radio-collared in Kenya (0°N), Botswana (20°S) and Zimbabwe (20°S),...

Data from: Wolbachia infection and dramatic intraspecific mitochondrial DNA divergence in a fig wasp

Jin-Hua Xiao, Ning-Xin Wang, Robert W. Murphy, James M. Cook, Ling-Yi Jia & Da-Wei Huang
Mitochondria and Wolbachia are maternally inherited genomes that exhibit strong linkage disequilibrium in many organisms. We surveyed Wolbachia infections in 187 specimens of the fig wasp species, Ceratosolen solmsi, and found an infection prevalence of 89.3%. DNA Sequencing of 20 individuals each from Wolbachia-infected and uninfected sub-populations revealed extreme mtDNA divergence (up to 9.2% and 15.3% in CO1 and cytochrome b, respectively) between infected and uninfected wasps. Further, mtDNA diversity was significantly reduced within the...

Data from: Measuring population differentiation using GST or D? A simulation study with microsatellite DNA markers under a finite island model and nonequilibrium conditions

Liang Leng & De-Xing Zhang
Genetic differentiation of populations is a key question in population genetic investigations. Wright’s FST (and its relatives such as GST) has been a standard measure of differentiation. However, the deficiencies of these indexes and their significance have been increasing realized in recent years, leading to some new measures being proposed, such as Jost’s (2008) D. This has also stimulated some considerable debate which, in certain sense, makes empirical biologists even more confused, for example, on...

Data from: Inferring the origin of populations introduced from a genetically structured native range by approximate Bayesian computation: case study of the invasive ladybird Harmonia axyridis

Eric Lombaert, Thomas Guillemaud, Cathleen E. Thomas, Lori J. Lawson Handley, Jiahui Li, Su Wang, Hong Pang, Irina Goryacheva, Ilya A. Zakharov, Emmanuelle Jousselin, Remy L. Poland, Alain Migeon, Joop Van Lenteren, Patrick De Clercq, Nick Berkvens, Walker Jones & Arnaud Estoup
Correct identification of the source population of an invasive species is a prerequisite for testing hypotheses concerning the factors responsible for biological invasions. The native area of invasive species may be large, poorly known and/or genetically structured. Because the actual source population may not have been sampled, studies based on molecular markers may generate incorrect conclusions about the origin of introduced populations. In this study, we characterized the genetic structure of the invasive ladybird Harmonia...

Data from: Significant genetic boundaries and spatial dynamics of giant pandas occupying fragmented habitat across southwest China

Lifeng Zhu, Shanning Zhang, Xiaodong Gu & Fuwen Wei
Understanding population history and genetic structure are key drivers of ecological research. Here we studied two highly fragmented and isolated populations (Xiaoxiangling and Daxiangling) of giant pandas (Ailuropoda melanoleuca) at the extreme southwestern edge of their distribution. This area also contains the Dadu River, national road 108 and various human infrastructure and development, providing an ideal region in which we can identify the effects of different barriers on animal movements. We used partial mitochondrial control...

Data from: Evaluating the reliability of microsatellite genotyping from low-quality DNA templates with a polynomial distribution model

Gang He, Kang Huang, SongTao Guo, WeiHong Ji, Yi Ren, XueLin Jin & BaoGuo Li
Molecular studies using trace DNA, such as from museum specimens, ancient or forensic samples and samples obtained noninvasively, often have a common problem of low quality of DNA templates. Amplification errors, such as allelic dropout and false allele, may arise during polymerase chain reaction (PCR) using such samples. A mathematical model which treats homozygotes and heterozygotes discriminately has been developed to measure sample quality and compute the confidence level of using multiple-tube approaches. We use...

Data from: Genetic structuring and recent demographic history of red pandas (Ailurus fulgens) inferred from microsatellite and mitochondrial DNA

Yibo Hu, Yu Guo, Dunwu Qi, Xiangjiang Zhan, Hua Wu, Michael W Bruford & Fuwen Wei
Clarification of the genetic structure and population history of a species can shed light on impacts of landscapes, historical climate change and contemporary human activities, and thus enables evidence-based conservation decisions for endangered organisms. The red panda (Ailurus fulgens) is an endangered species distributing at the edge of the Qinghai-Tibetan Plateau and is currently subject to habitat loss, fragmentation and population decline, thus representing a good model to test the influences of the above factors...

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