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| 1 | Testing reintroduction as a conservation strategy for the critically endangered Chinese alligator: Movements and home range of released captive individuals显示文摘The Chinese alligator (Alligator sinensis) is considered the most critically endangered crocodilian as a result of the near total loss of its habitat and its extremely small and fragmented wild populations. Plans for population recovery lie mostly with wetland res- toration and the reintroduction of captive-reared animals. We carried out a first-trial release of 3 adult Chinese alligators (1♂, 2♀) into a pond at the Hongxing conservation site, Xuancheng, southern Anhui Province; the animals were radio-tracked from May to October in 2003. We hypothesized that after a period of adaptation, the alligators would establish definable home ranges. Two (1♂, 1♀) of the 3 alligators were monitored for the whole of the tracking period. The male had an annual home-range size of 7.61 hm2, and the female 4.00 hm2. Water temperature and pond water level were two important factors influencing the alligators' distributions, and daily movements. The radio-tracked alligators had overlapping home ranges, which notably included the one substantial island in the pond; that island is the only known nesting site of the local native wild alligators. Aggressive interactions between the released alligators and native wild alligators were observed during the breeding season around this island. All the three reintroduced alligators survived the winter of 2003 and were alive in the same pond in 2008. We concluded that the Hongxing conservation site provided a suitable habitat for the reintroduced alligators. However, the low water level in the pond resulting from farmland irrigation in August and September can be a substantial threat to the alligators' survival. Therefore, regu- lations on irrigation in summer and autumn are needed to balance the water needs of the alligators and agriculture. | WANG ZhengHuan YAO Hong DING YouZhong THORBJARNARSON John WANG XiaoMing | 2011 | Chinese Science Bulletin2011，56，24： | 5 |
| 2 | Behavioral responses of blue sheep(Pseudois nayaur) to nonlethal human recreational disturbance显示文摘Nonlethal human recreational activities have been confirmed to have negative effect on wild animals in a number of ways,including changes in behaviors,avoidance of suitable habitats and declines in breeding success.Studies on the anti-disturbance mechanism of wild animals to human disturbance can provide valuable knowledge to the management of wild animals and the evolutionary mechanisms of behavioral adaptation to their habitats.To evaluate how blue sheep(Pseudois nayaur) would react to nonlethal human recreational disturbance,we studied their anti-disturbance strategy towards human disturbance in Suyukou National Forest Park(SNFP),Helan Mountains,Yinchuan of Ningxia Hui Autonomous Region.Using multinomial logistic regression models(MLRMs),we sought to answer two questions:(1) which kind of human recreational behavior would evoke the most serious anti-disturbance behaviors in blue sheep;and(2) how would various ecological factors influence the anti-disturbance strategy of blue sheep to human recreational disturbance? We collected 10 habitat and population variables and evaluated three kinds of reaction of blue sheep-no response,vigilance and flight.A total of 921 observations qualified to enter MLRMs.We found that habitat type(HT),gender(GEN),head direction(HD),visibility index(VI),and disturbance source(DS) were the five variables that significantly influenced the intensity of reactions of blue sheep.Blue sheep were more alert to tourists than to vehicles,and roads were the habitat type that caused the most intensive reaction of alertness where human disturbance was the highest.Females were more vigilant than males.Blue sheep might feel safer when staying in open habitat,and taking a front head direction provided them with the highest vigilance.Based on these results,we present suggestions to SNFP for the management of ecotourism and blue sheep conservation. | JIANG TianYi WANG XiaoMing DING YouZhong LIU ZhenSheng WANG ZhengHuan | 2013 | Chinese Science Bulletin2013，58，17： | 2 |
| 3 | Contemporary Asymmetric Genetic Introgression Between Two Pelophylax Species in Shanghai显示文摘Human disturbances are considered to break reproduction barriers among species.Significant increases in hybridization events have been reported among a large number of taxonomic groups in anthropogenic environments,providing novel insights into species evolution mechanisms and conservation management in the Anthropocene.The Eastern Golden Frog(Pelophylax plancyi)and BlackSpotted Frog(P.nigromaculatus)are two sympatric anuran species with a long history of mitochondrial genome introgression in highly urbanized continental East Asia.However,there is only limited understanding of the pattern of their contemporary hybridization and factors influencing their interspecific relationship under anthropogenic disturbances.Here,interspecific hybridization between P.plancyi and P.nigromaculatus at the population level was investigated in Shanghai.All except two haplotypes obtained from both species in Shanghai were mixed together,and located in the introgression clade,implying multiple ancient mitochondrial introgression events occurred in the populations of our study area.Asymmetric genetic introgression was detected by microsatellite markers,with 0.7%of P.plancyi and 14.6%of P.nigromaculatus identified as contemporary admixed individuals.Consistent with the trend of population density,higher genetic diversity of neutral microsatellite loci was found in the more abundant P.plancyi;however,variation in mitochondrial(Cyt-b)and nuclear(POMC)genes was higher in relatively rare P.nigromaculatus.The population density of P.plancyi and number of water patches within local habitats were significantly positively correlated with both occurrences and proportions of admixed individuals in the populations of P.plancyi and P.nigromaculatus.Considering the prevalent transformation of habitats in urbanized areas,these results imply that a high population density in isolated artificially altered habitats is likely to increase interspecific hybridization.Thus,population monitoring and improvement of landscape connectivity between habitats would be needed to control the intensity of interspecific hybridization between P.plancyi and P.nigromaculatus in anthropogenic-disturbed environments. | Xu WEI Wenli LIU Gang WANG Rui MA Meiling HUANG Jiaxin ZHENG Tingwei DONG Changqing YUAN Shunqi BO Xiao YUAN Ben LI Shuo MA Qu YUE Youzhong DING Zhenghuan WANG | 2024 | Asian Herpetological Research2024，15，1： | 0 |
| 4 | Geochronology and zircon geochemistry of auriferous intrusions in the Bumo deposit,Hainan Province,China显示文摘Intrusion-related gold deposits(IRGS)are a lowgrade,large-tonnage exploration target.Recently,auriferous magmatic rocks were found in the Bumo deposit of the Gezhen shear zone in Hainan Province,China.However,the geochronology and geochemical characteristics of the intrusions,as well as the mineralization potential,are still unclear.Field and petrographic work show that the sulfidebearing intrusions can be divided into diorite porphyrites,quartz monzodiorites and monzodiorites.Zircon LA–ICP–MS U–Pb dating demonstrates that diorite porphyrites,quartz monzodiorites and monzodiorites were formed at104±1,114±1,114±1 Ma,respectively.In addition,sulfides in Yanshanian intrusion-related gold mineralization haveδ;S values of 0.2–4.4%,lower than those in Hercynian-Indosinian(1.9–9.8%)orogenic deposits(ca.219–378 Ma)in the Gezhen shear zone.In addition,all these intrusions display close correlations between Eu/EuN*with Th/U,consistent with the differentiation of amphibole,apatite and titanite from a hydrous melt.Moreover,zircon Eu/EuN*in the intrusions are higher than0.4,demonstrating that the magmatic rocks have high water contents and oxygen fugacity values,favorable for gold mineralization.Consequently,the Yanshanian magmatic rocks can be a new potential gold exploration target in the Gezhen shear zone. | Yan Hai Bingtao Li Teng Deng Deru Xu Li Wang Youzhong Xiong Xiaowen Zhang Zhiling Wang Shaohao Zou Zhengpeng Ding Qian Qian Shichao Guo | 2022 | Acta Geochimica2022，41，2： | 0 |
| 5 | Adjuvant chemotherapy versus adjuvant concurrent chemoradiotherapy after radical surgery for early-stage cervical cancer:a randomized,non-inferiority,multicenter trial显示文摘We conducted a prospective study to assess the non-inferiority of adjuvant chemotherapy alone versus adjuvant concurrent chemoradiotherapy (CCRT) as an alternative strategy for patients with early-stage (FIGO 2009 stage IB–IIA) cervical cancer having risk factors after surgery. The condition was assessed in terms of prognosis, adverse effects, and quality of life. This randomized trial involved nine centers across China. Eligible patients were randomized to receive adjuvant chemotherapy or CCRT after surgery. The primary end-point was progression-free survival (PFS). From December 2012 to December 2014, 337 patients were subjected to randomization. Final analysis included 329 patients, including 165 in the adjuvant chemotherapy group and 164 in the adjuvant CCRT group. The median follow-up was 72.1 months. The three-year PFS rates were both 91.9%, and the five-year OS was 90.6% versus 90.0% in adjuvant chemotherapy and CCRT groups, respectively. No significant differences were observed in the PFS or OS between groups. The adjusted HR for PFS was 0.854 (95% confidence interval 0.415–1.757;P = 0.667) favoring adjuvant chemotherapy, excluding the predefined non-inferiority boundary of 1.9. The chemotherapy group showed a tendency toward good quality of life. In comparison with post-operative adjuvant CCRT, adjuvant chemotherapy treatment showed non-inferior efficacy in patients with early-stage cervical cancer having pathological risk factors. Adjuvant chemotherapy alone is a favorable alternative post-operative treatment. | Danhui Weng Huihua Xiong Changkun Zhu Xiaoyun Wan Yaxia Chen Xinyu Wang Youzhong Zhang Jie Jiang Xi Zhang Qinglei Gao Gang Chen Hui Xing Changyu Wang Kezhen Li Yaheng Chen Yuyan Mao Dongxiao Hu Zimin Pan Qingqin Chen Baoxia Cui Kun Song Cunjian Yi Guangcai Peng Xiaobing Han Ruifang An Liangsheng Fan Wei Wang Tingchuan Xiong Yile Chen Zhenzi Tang Lin Li Xingsheng Yang Xiaodong Cheng Weiguo Lu Hui Wang Beihua Kong Xing Xie Ding Ma | 2023 | Frontiers of Medicine2023，17，1： | 0 |
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