7 Works

Data from: Cambrian petalonamid Stromatoveris phylogenetically links Ediacaran biota to later animals

Jennifer Hoyal Cuthill, Jian Han & Jennifer F. Hoyal Cuthill
Macro-organisms of the Ediacaran period (635-541 Ma) were large and morphologically complex, with some living in aphotic habitats, presenting the possibility that they were early animals. However, ‘bizarre’ Ediacaran morphologies and mouldic preservation have frustrated comparison to later taxa. Consequently, both the positions of Ediacaran biota in the tree of life and the origins of the Metazoa have been unresolved. Here we provide phylogenetic evidence to identify Ediacaran macro-biota as animals, based on 206 new...

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: Loss of top-down biotic interactions changes the relative benefits for obligate mutualists

Rong Wang, Xiao-Yong Chen, Yan Chen, Gang Wang, Derek Dunn, Rupert Quinnell & Steve Compton
The collapse of mutualisms due to anthropogenic changes is contributing to losses of biodiversity. Top predators can regulate biotic interactions between species at lower trophic levels and may contribute to the stability of such mutualisms, but they are particularly likely to be lost after disturbance of communities. We focused on the mutualism between the fig tree Ficus microcarpa and its host-specific pollinator fig wasp and compared the benefits accrued by the mutualists in natural and...

Data from: Nutrient-specific compensation for seasonal cold stress in a free-ranging temperate colobine monkey

Songtao Guo, Rong Hou, Paul A. Garber, David Raubenheimer, Nicoletta Righini, Weihong Ji, Ollie Jay, Shujun He, Fan Wu, Fangfang Li, Baoguo Li, Song-Tao Guo, Shu-Jun He, Fang-Fang Li, Bao-Guo Li & Wei-Hong Ji
1. Homeostatic responses of animals to environmentally-induced changes in nutrient requirements provide a powerful basis for predictive ecological models, and yet such responses are virtually unstudied in the wild. 2. We tested for macronutrient-specific compensatory feeding responses by free-ranging golden snub-nosed monkeys (Rhinopithecus roxellana) inhabiting high altitude temperate forests where they experience a substantial difference in ambient temperature in cold winters vs. warmer springs. The monkeys had free access to natural foods throughout the year,...

Data from: Phylogeographic patterns of the desert poplar in northwest China shaped by both geology and climatic oscillations

Yan-Fei Zeng, Jian-Guo Zhang, Bawerjan Abuduhamiti, Wen-Ting Wang & Zhi-Qing Jia
Background: The effects of historical geology and climatic events on the evolution of plants around the Qinghai-Tibetan Plateau region have been at the center of debate for years. To identify the influence of the uplift of the Tianshan Mountains and/or climatic oscillations on the evolution of plants in arid northwest China, we investigated the phylogeography of the Euphrates poplar (Populus euphratica) using chloroplast DNA (cpDNA) sequences and nuclear microsatellites, and estimated its historical distribution using...

Data from: Changes in the chlorophyll content of grape leaves could provide a physiological index for responses and adaptation to UV-C radiation

Yangyang Luo, Ruixiang Li, Qiushi Jiang, Ru Bai & Dong Duan
Stilbenes are a group of phytoalexins that play an important role in grapevine (Vitis) basal immunity and can be induced by biotic and abiotic stresses. The levels of chlorophylls, the main pigments in plant cells, can also indicate the tolerance of plants to various stresses. Here, the response of different grapevine genotypes to UV-C radiation treatment was tested and the abundance of chlorophyll in the Hoe29 and Ke53 genotypes was observed to increase significantly within...

Data from: Cambrian rhynchonelliform nisusioid brachiopods: phylogeny and distribution

Lars E. Holmer, Mohammad-Reza Kebria-Ee Zadeh, Leonid E. Popov, Mansoureh Ghobadi Pour, Javier J. Álvaro, Vachik Hairapetian & Zhifei Zhang
A comprehensive review and phylogenetic analysis of genera and species presently assigned to the rhynchonelliform superfamily Nisusioidea and family Nisusiidae suggests that this short-lived but important group of brachiopods first appeared in peri-Gondwana during the second half of the Cambrian Series 2, before going extinct by the end of Drumian time. Nisusiides achieved their maximum morphological disparity and geographical distribution during Wuliuan age, and most likely Laurentia was the major center of dispersal. The new...

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  • Northwest University
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  • Chinese Academy of Sciences
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