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Seasonal variations in the plant diet of the Chinese Monal revealed by fecal DNA metabarcoding analysis

Avian Research 2022年第2期13卷 208-215页

作者： Bin Wang Yun Li Guiquan Zhang Jian Yang Cao Deng Haoyu Hu Long Zhang Xiaoqin Xu caiquan zhou Key Laboratory of Southwest China Wildlife Resources Conservation(Ministry of Education) China West Normal UniversityNanchong637002China Institute of Ecology China West Normal UniversityNanchong637002China Key Laboratory of State Forestry and Grassl and Administration on Conservation Biology of Rare Animalsin the Giant Panda National Park(China Conservation and Research Center for the Giant Panda) Dujiangyan611830China Key Laboratory of Animal Disease and Human Health of Sichuan Province College of Veterinary MedicineSichuan Agricultural UniversityChengdu611130China Institute of Chinese Materia Medica China Academy of Chinese Medical SciencesBeijing100700China

The Chinese Monal(Lophophorus thuysii)is an alpine-obligate galliform species of global conservation priority.It has been listed as a first class protected wildlife species in China,requiring conservation actions during the 14 th Five-Year Plan period.However,the diet composition of Chinese Monal and its seasonal variations have rarely been studied,constraining the effective conservation of the species.Here,we investigated the plant diet composition of the Chinese Monal and its seasonal variations using a DNA metabarcoding approach on fecal samples.We collected 190 fecal samples of the Chinese Monals from the central Qionglai Mountains located in China,and analyzed the plant diet of this species using a DNA metabarcoding approach.Taxonomic profiling of higher plants in the fecal samples was performed using the second internal transcribed spacer(ITS2)amplicon.Downstream analyses,including rarefaction curves,nonmetric multidimensional scaling(NMDS)and permutational multivariate analysis of variance(PERMANOVA),were used to explore the seasonal variations in diet composition.The Chinese Monal foraged a wide range of plant recipes composed of 35 families and 83 genera throughout the year,with Brassicaceae,Apiaceae,and Poaceae as the dominant families,and Cardamine as the dominant genus.The species consumed plants from 62 genera from 28 families during the breeding season(n=81)and 66 genera from 31 families during the non-breeding season(n=109).Further,the plant diet composition significantly varied between the breeding and non-breeding seasons,especially for the frequency of occurrence and relative read abundances at genus level.Our study analyzed the plant diet of the Chinese Monal at a high resolution for the first time,and the results revealed that the seasonal variations in its plant diet composition was adapted to plant phenology and foraging strategy.Fritillaria species,a previously confirmed important food resource for the Chinese Monal,were not detected in any fecal samples,potentially due to overharvesting of

关键词： metabarcoding habitat breeding

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Integrative taxonomy helps to reveal the mask of the genus Gynandropaa (Amphibia: Anura: Dicroglossidae)

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Integrative Zoology 2016年第2期11卷 134-150页

作者： Yan HUANG Junhua HU Bin WANG Zhaobin SONG caiquan zhou Jianping JIANG Chengdu Institute of Biology Chinese Academy of SciencesChengduChina College of Life Science Sichuan UniversityChengduChina University of Chinese Academy of Sciences BeijingChina Key Laboratory of Southwest China Wildlife Resources Conservation China West Normal UniversityMinistry of EducationNanchongChina

Species of the genus Gynandropaa within the family Dicroglossidae are typical spiny frogs whose taxonomic status has long been in doubt.We used integrative methods,involving morphological and molecular analyses,to elucidate the phylogenetic relationships,and to determine identities and the geographic distribution of each valid species.We obtained DNA sequence data of 5 species of Gynandropaa(complete sequences of the mitochondrial NADH dehydrogenase subunit 2[ND2]gene,and 890 bp of 12S rRNA and 16S rRNA partial sequences)from 37 localities(including the topotypes of 5 described species)and constructed Bayesian and maximum-likelihood trees to examine the patterns of phylogeography.A total of 28 morphological variables were taken on 624 specimens.Three clades with clear geographic patterns were recognized:clade C(from south-western Sichuan Province and central Yunnan Province),clade E(western Guizhou Province and eastern to central Yunnan Province)and clade W(western to southern Yunnan Province).Integrating morphological characteristics and distribution information,the clades W,E and C represent Gynandropaa yunnanensis,G.phrynoides and G.sichuanensis,respectively.We draw the following conclusions:(i)the taxon G.phrynoides,formerly evaluated as a junior synonym of G.yunnanensis,is revalidated herein at the rank of species;(ii)G.liui is a junior synonym of G.sichuanensis;and(iii)G.yunnanensis is a valid species while G.bourreti is probably a subspecies of G.yunnanensis,with the distribution range from Vietnam to southern Yunnan Province.This study clears up the taxonomic status of Gynandropaa and provides important information for understanding the evolution and conservation of these spiny frogs.

关键词： amphibians morphological traits spiny frogs mitochondrial DNA systematics

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Skeletochronological Study of Age,Longevity and Growth in a Population of Rana nigromaculata(Amphibia:Anura) in Sichuan,China

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Asian Herpetological Research 2012年第3期3卷 258-264页

作者： Min MAO Yan HUANG Zhiping MI Yanhong LIU caiquan zhou Key Laboratory of Southwest China Wildlife Resources Conservation (Ministry of Education) China West Normal University Institute of Rare Animals and Plants China West Normal University

A skeletochronological study was conducted for the age, longevity and growth of a Rana nigromaculata population in northeastern Sichuan, China. Of 139 specimens, 119(68 males and 51 females) exhibited distinct arrested growth lines in phalanges. Age at first reproduction was found to be two years of age for males and three for females. Maximum longevity was estimated to be at least six years in males and seven years in females. Average age did not differ between males and females. Breeding females were significantly older than breeding males. Females were larger in body size and heavier in body mass than males. Age was not correlated with body size and body mass in males, but a significant correlation was found among age, body size and body mass in females. The growth curve appeared significantly different between the sexes, with a higher growth rate throughout life and a larger asymptotic size in females. Moreover, analysis of the growth model indicated that the population studied was relatively stable.

关键词： age structure,Rana nigromaculata,population,skeletochronology

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Asymmetry of Testes in Guenther's Frog,Hylarana guentheri(Anuar:Ranidae)

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Asian Herpetological Research 2011年第4期2卷 234-239页

作者： Yanhong LIU Wenbo LIAO caiquan zhou Zhiping MI Min MAO Key Laboratory of Southwest China Wildlife Resources Conservation of Ministry of Education China West Normal University Institute of Rare Animals and Plants China West Normal University

Testes size in most animals commonly shows directional asymmetry. In birds, the left testis mass is usually larger than the right one, but the reports on the testes asymmetry in anurans are very few. Moller （1994） hypothesized that the right testis serves a compensatory role and increases in size when the left one is defective, and further suggested that testes asymmetry may be a reliable indicator of individual body condition. In this paper, we tested the compensation hypothesis in the Guenther＇s frog, Hylarana guentheri. From 60 sampled males, we found that there was a significant directional asymmetry in testes mass, with the left testis size being significantly correlated with relative testes asymmetry, providing evidence that the right testis had a compensatory function. However, testes mass and asymmetry were not correlated with body condition. Hence, we found no evidence that testes asymmetry in the Guenther＇s frog reflected male condition, and male age was also not related to testes mass or asymmetry.

关键词： directional testes asymmetry compensation hypothesis body condition Hylarana guentheri

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The validity of different zokor species and the genus Eospalax inferredfrom mitochondrial gene sequences

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Integrative Zoology 2008年第4期3卷 290-298页

作者： caiquan zhou Kaiya zhou Institute of Rare Animals and Plants China West Normal UniversityNanchongChina Jiangsu Key Laboratory for Biodiversity and Biotechnology College of Life SciencesNanjing Normal UniversityNanjingChina

To help resolve the systematic position of Myospalacine(zokors)and to clarify the phylogenetic relationships among zokor species,complete mitochondrial 12S rRNA and cytochrome b gene sequences were determined for seven zokor species from China.Phylogenetic relationships among all extant zokors,except the Siberian zokor(Myospalax myospalax)and Smith’s zokor(Eospalax smithi),were reconstructed with the Chinese bamboo rat(Rhizomys sinensis)as an outgroup.Our results support the generic status of Eospalax and also support the validity of the specific status of Eospalax cansus,Eospalax baileyi and Eospalax rufescens.

关键词： Eospalax baileyi Eospalax cansus Eospalax rufescens phylogeny zokor.

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畜牧业抗生素抗性基因的分布与传播研究进展

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家畜生态学报 2024年第4期45卷 1-7页

作者：刘影张晋东吴艳丽杨琰瑛周材权西南野生动植物资源保护教育部重点实验室/西华师范大学生命科学学院四川南充637009 农业农村部环境保护科研监测所天津300191 农业农村部农产品质量安全环境因子控制重点实验室天津300191 西华师范大学生态研究院四川南充637002

随着居民生活水平提高,人们对肉、蛋、奶的需求量增加,促使畜牧业迅速发展。由于抗生素在提高动物机能、预防疾病方面具有重要作用而被大量生产使用,在全球抗生素滥用的大背景下,畜禽已成为抗生素及抗性基因的一个重要储存库,亟需全面... 详细信息

随着居民生活水平提高,人们对肉、蛋、奶的需求量增加,促使畜牧业迅速发展。由于抗生素在提高动物机能、预防疾病方面具有重要作用而被大量生产使用,在全球抗生素滥用的大背景下,畜禽已成为抗生素及抗性基因的一个重要储存库,亟需全面了解畜牧业中抗生素及抗性基因的分布与传播,以便于为抗生素在畜牧业中的科学使用和合理控制提供参考依据。文章综述了畜牧业抗生素的使用现状,总结了抗生素抗性基因污染对畜禽、人类健康和野生动物的影响,并强调未来应关注畜禽粪便的二次污染在周围环境以及畜牧业抗生素抗性基因在野生动物栖息地的扩散机制研究,以期为今后畜牧业的健康发展、抗生素的科学控制以及抗生素抗性基因的相关研究提供参考。

关键词：畜牧业抗生素抗生素抗性基因分布传播

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非繁殖期笼养绿尾虹雉血液生理生化指标比较分析及参考范围建立

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四川农业大学学报 2024年第2期42卷 455-463页

作者：冯少华吴邦元梁驹陈黎徐小钦李万洪周材权马红张龙西南野生动植物资源保护教育部重点实验室/西华师范大学生命科学学院四川南充637009 四川蜂桶寨国家级自然保护区管护中心四川雅安625700 四川省野生动物救护与繁育研究中心/西华师范大学生态研究院四川南充637009

【目的】通过比较非繁殖期不同性别和年龄阶段笼养绿尾虹雉血液生理生化指标,并构建参考范围,以期为绿尾虹雉健康状况评估、疾病诊治提供科学依据。【方法】采集15只非繁殖期健康成年绿尾虹雉的血液,采用兽用全自动血细胞分析仪和兽用... 详细信息

【目的】通过比较非繁殖期不同性别和年龄阶段笼养绿尾虹雉血液生理生化指标,并构建参考范围,以期为绿尾虹雉健康状况评估、疾病诊治提供科学依据。【方法】采集15只非繁殖期健康成年绿尾虹雉的血液,采用兽用全自动血细胞分析仪和兽用生化分析仪,检测其12项血液生理指标和13项血液生化指标。同时,使用非配对t检验对不同性别和不同年龄段组个体进行比较分析,依照正态分布区间建立相应指标参考范围。最后,将参考范围分别与相近雉类以及1只体况较差绿尾虹雉的对应指标进行对比验证。【结果】在非繁殖期绿尾虹雉中,α-羟丁酸脱氢酶存在性别差异(P0.05);绝大多数绿尾虹雉血液生理生化指标参考范围与近缘雉类高度相似;25项指标的参考范围中,体况较差个体共有14项指标出现偏差。【结论】建立的非繁殖期笼养绿尾虹雉血液生理生化指标参考范围具有一定的可靠性,可为非繁殖期笼养绿尾虹雉健康状况评估、疾病诊治提供依据。

关键词：绿尾虹雉血液生理指标血液生化指标参考范围

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基于块分解和循环神经网络的海上升压站智能巡检目标时序配准算法

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水力发电 2024年第7期50卷 101-105页

作者：杨林刚王增光马润泽陈永春周才全中国电建集团华东勘测设计研究院有限公司浙江杭州310000 中国航空工业集团公司洛阳电光设备研究所河南洛阳471000

常规海上升压站智能巡检目标时序配准主要依托三角网格表示方法,缺少对图像块能量分布的分析,导致目标配准后离群点的比重较大,配准效果欠佳。为此,提出了基于块分解和循环神经网络的海上升压站智能巡检目标时序配准算法。通过对海上升... 详细信息

常规海上升压站智能巡检目标时序配准主要依托三角网格表示方法,缺少对图像块能量分布的分析,导致目标配准后离群点的比重较大,配准效果欠佳。为此,提出了基于块分解和循环神经网络的海上升压站智能巡检目标时序配准算法。通过对海上升压站巡检项的分析,采用块分解算法对巡检图像进行分解,检测巡检目标的特征点,并通过提取分解图像块中的高频分量获取图像的能量分布;结合目标特征点的主曲率,计算特征点的标量比例系数,将其与给定阈值相比较,以识别并剔除不稳定极值点;引入循环神经网络求取巡检目标点的质心与特征点之间像元的标准差,由此找出阵列的中心点进行配准。以某实际海上升压站项目为研究背景,对所提方法进行性能验证,结果表明,利用该算法对巡检目标进行时序配准后,得到离群点比重较小,配准效果更好。

关键词：块分解循环神经网络巡检目标目标配准配准算法海上升压站

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大熊猫国家公园荥经片区大熊猫可食竹生物量模型

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四川林业科技 2024年第3期45卷 87-93页

作者：秦炜锐刘景怡宋心强付明霞潘翰程勇薛飞周材权杨彪西华师范大学栗子坪大熊猫生态与保护四川省野外科学观测研究站四川南充637009 西华师范大学生态研究院四川南充637009 北京市企业家环保基金会北京100020 荥经县大相岭自然保护区管护中心四川雅安625000 成都大熊猫繁育研究基地四川成都610081

2023年4月在大熊猫(Ailuropoda melanoleuca)国家公园荥经片区不同森林类型下随机抽样,测量记录不同的大熊猫可食竹的生长指标和生物量,通过回归的方法建立大熊猫可食竹生物量模型。结果表明:除冷箭竹(Arundinaria faberi)叶外,以高度... 详细信息

2023年4月在大熊猫(Ailuropoda melanoleuca)国家公园荥经片区不同森林类型下随机抽样,测量记录不同的大熊猫可食竹的生长指标和生物量,通过回归的方法建立大熊猫可食竹生物量模型。结果表明:除冷箭竹(Arundinaria faberi)叶外,以高度和基径为自变量的泥巴山筇竹(Qiongzhuea multigemmia)、短锥玉山竹(Yushania brevipaniculata)和八月竹(Chimonobambusa szechuanensis)不同构件生物量模型均具有统计学意义,其中泥巴山筇竹秆生物量模型和地上生物量模型的拟合效果相对最佳。研究结果对大熊猫国家公园荥经片区大熊猫可食竹生物量调查、种群恢复与栖息地现状评估具有一定的参考价值。

关键词：大熊猫可食竹回归法生物量模型栖息地

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Parallel Physics-Informed Neural Networks Method with Regularization Strategies for the Forward-Inverse Problems of the Variable Coefficient Modified KdV Equation

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Journal of Systems Science & Complexity 2024年第2期37卷 511-544页

作者： zhou Huijuan School of Science Shanghai Maritime UniversityShanghai 201306China

This paper mainly introduces the parallel physics-informed neural networks(PPINNs)method with regularization strategies to solve the data-driven forward-inverse problems of the variable coefficient modified Korteweg-de Vries(VC-MKdV)equation.For the forward problem of the VC-MKdV equation,the authors use the traditional PINN method to obtain satisfactory data-driven soliton solutions and provide a detailed analysis of the impact of network width and depth on solving accuracy and speed.Furthermore,the author finds that the traditional PINN method outperforms the one with locally adaptive activation functions in solving the data-driven forward problems of the VC-MKdV equation.As for the data-driven inverse problem of the VC-MKdV equation,the author introduces a parallel neural networks to separately train the solution function and coefficient function,successfully addressing the function discovery problem of the VC-MKdV equation.To further enhance the network’s generalization ability and noise robustness,the author incorporates two regularization strategies into the PPINNs.An amount of numerical experimental data in this paper demonstrates that the PPINNs method can effectively address the function discovery problem of the VC-MKdV equation,and the inclusion of appropriate regularization strategies in the PPINNs can improves its performance.

关键词： Data-driven forward-inverse problems parallel physics-informed neural networks regularization strategies variable coefficient modified KdV equation

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