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Chinese Science Bulletin 2001年第8期46卷 669-671页

作者： LI Ming DING Changqing WEI Fuwen MENG Shijie XI Yongmei LU Baozhong Institute of Zoology Chinese Academy of SciencesBeijing 100080China Department of Biology Northwest UniversityXi’an 710060China Shaanxi crested Ibis Conservation Station Yangxian 723300China

The crested Ibis (Nipponia nippon) is a critical endangered species of the world. At present, a reintroduction program will be conducted to save this species essentially. However, because the crested Ibise is a sexual alike bird, it is very difficult to identify the sex from the morphological character. In order to identify the sex easily and select the right individuals for captive breeding and reintroduction, the sex related gene on W chromosome was amplified and the sex of three crested Ibises were also identified in the present study. The 262bp fragment was also sequenced, and we found that there were 13 different nucleotide sites with 2.25 of transition/transversion based on the comparison with that of the Oriental White Stork. The sequence will also provide a theoretic base for further designing specific primer for sex related gene in the crested Ibis.

关键词： crested Ibis Nipponia nippon sex-related gene sex identification.

Post-fledging dispersal and habitat use of a reintroduced population of the crested Ibis (Nipponia nippon)

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Chinese Birds 2014年第1期5卷 49-57页

作者： Zhiping Huo Junfeng Guo Xia Li Xiaoping Yu College of Life Sciences Shaanxi Normal University Reintroduction Center of crested Ibis of Ningshan

Background: Knowledge of dispersal movement of birds and their habitat preference during the post-fledging period is fundamental to the understanding of their ecological and evolutionary processes. The crested Ibis is now being reintroduced to protected sites within its historical range, with the goal of establishing a self-sustaining population that may eventually qualify the species for ***: We carried out an ecological study of post-fledging dispersal and habitat use of a reintroduced population of the crested Ibis(Nipponia nippon) from 2008 to 2012 in Ningshan County, China, by using banding and radio-telemetry ***: In about two weeks(an average of 14.3 days) after fledging, the activities of the fledglings were concentrated in a range of about 100 m around their natal sites, such as the oak-pine forest patches at the edge of open *** this period, fledglings were still partially dependent upon parental care and fed typically on a daily *** increasingly became independent by mid-August and then gradually moved away from their natal sites to post-fledging dispersal locations. During the period of the post-fledging dispersal process, most juveniles moving southwest were concentrated at the mean direction(μ = 254.6°, ? = 70.5°) with a mean dispersal distance of 5.1 *** took an average of 56.4 days to disperse from the natal territory to the first wintering area. Also, forging habitats for juvenile ibis varied with time and local conditions. For example, paddy fields were used most frequently among all habitat types, while shallow rivers just from August to October. Masson pine(Pinus massoniana) was often regarded as the roosting tree species preferred by the crested Ibis, with the highest utilization rate among all the roosting habitat types. The juveniles of the wild population dispersed four times as far as that of the reintroduced population, but the overall pattern of post-fledging dispersal is similar for the r

关键词： crested Ibis Ningshan County Post-fledging dispersal Habitat use Reintroduced population

Effects of breeding success,age and sex on breeding dispersal of a reintroduced population of the crested Ibis(Nipponia nippon)in Ningshan County,China

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Avian Research 2018年第4期9卷 314-320页

作者： Rong Dong Xinping Ye Lin Zhong Xia Li Min Li Huaqiang Wang Xiaoping Yu College of Life Sciences Shaanxi Normal UniversityXi’an 710119China Research Center for UAV Remote Sensing Shaanxi Normal UniversityXi’an 710119China Shaanxi Nature Reserve and Wildlife Management Xi’an 710082China Reintroduction Center of crested Ibis Ningshan CountyAn’kang 725000China Wildlife Administration of Yaozhou Forestry Bureau Tong Chuan 727110China

Background: Breeding dispersal is an important ecological process that affects species' population dynamics and colonization of new suitable areas. Knowledge of the causes and consequences of breeding dispersal is fundamental to our understanding of avian ecology and evolution. Although breeding success for a wild and reintroduced population of the crested Ibis(Nipponia nippon) has been reported, the relationships between individuals' breeding dispersal and their breeding success, age and sex remain ***: Ibises' breeding dispersal distance, which is the distance moved by adults between sites of reproduction, was estimated based on the observations of consecutive breeding sites of marked ibis individuals. From observational and capture-recapture data(n as = 102) over 9 years, individuals' breeding dispersal probability in relation to age, sex, and reproductive success wanalyzed via a generalized linear mixed effect modeling ***: Our results show that 55% males and 51% females keep their previous territories following nesting success. Failed breeding attempts increased dispersal probabilities. Both females and males failed in breeding were more likely to disperse with greater distances than successful birds(females: 825 ± 216 m vs 196 ± 101 m, males: 372 crested Ibis exhibited a female-biased dispersal pattern that the mean dispersal distance± 164 m vs 210 ± 127 m). of females(435 ± 234 m) was much larger than that of males(294 ± 172 m).Conclusion: Our results are fundamental to predict the patterns of breeding dispersal related to reproductive success under different release sites. From the conservation point of view, landscape connectivity between the reintroduced populations should be taken into account in accordance with the distance of breeding dispersal.

关键词： Breeding dispersal Breeding success Generalized linear mixed effect model crested Ibis Reintroduced population