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Morphological and phylogenetical analysis reveals that a new tapeworm species (Cestoda: Hymenolepididae) from whooper swan belongs to Cloacotaenia not Hymenolepis

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Journal of Forestry Research 2020年第6期31卷 2581-2587页

作者： Zhijun Hou Lei Han Ying Sun Dongdong Shen Zhiwei Peng Lixin Wang Qian Zhai Yanqiang Zhou Yaxian Lu Liwei Teng Hongliang Chai College of Wildlife Resource Northeast Forestry UniversityHarbin 150040People’s Republic of China

During a helminthological study of waterfowl in China,a new species(Cloacotaenia cygnimorbus ***.)of hymenolepidid cestodes(tapeworm)was found in the small intestine of whooper swan(Cygnus cygnus,Linnaeus,1758).The rudimentary rostellum and four unarmed muscular suckers,proglottids with distinct craspedote and three spherical testes were coincident with the characters of Cloacotaenia or Hymenolepis,but phylogenetic analysis of 28S rRNA and cox1 gene revealed that the new species is Cloacotaenia rather than *** morphology was also clearly diff erentiated from *** in the arrangement of its testes in a triangle instead of in line and the cirrus unarmed rather than *** with ***,the new species has more elongated neck,much larger mature proglottids and much smaller testes,cirrus sac,ovary,vitellarium and uterine *** addition,it infected the host intestine not the *** analysis of cox1 gene of the new species shows that it had a level of sequence variation(10.52–23.06%)with the sequences of *** considerable morphological and molecular diff erences between those two parasites support *** *** a new species.

关键词： Cloacotaenia Hymenolepididae Hymenolepis whooper swan 28S rRNA cox1

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Migration routes and differences in migration strategies of whooper swans between spring and autumn

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Avian Research 2023年第3期14卷 345-353页

作者： Ji-Yeon Lee Hyung-Kyu Nam Jin-Young Park Seung-Gu Kang Nyambayar Batbayar Dong-Won Kim Jae-Woong Hwang Otgonbayar Tsend Tseveenmyadag Natsagdorj Jugdernamjil Nergui Tuvshintugs Sukhbaatar Wee-Haeng Hur Jeong-Chil Yoo The Korea Institute of Ornithology and Department of Biology Graduate SchoolKyung Hee University26 Kyungheedae-roDongdaemun-guSeoul02447Republic of Korea National Institute of Biological Resources 42 Hwangyeong-roSeo-guIncheon22689Republic of Korea Endangered Species Research Center National Institute of EcologyYeongyang36351Republic of Korea Wildlife Sciences and Conservation Center of Mongolia Union BuildingB-701UNESCO str.Ulaanbaatar14210Mongolia

Long-distance migratory birds travel more rapidly in spring than in autumn,as they face temporal breeding ***,several species travel slower in spring owing to environmental influences,such as food availability and wind *** trackers were attached to 17 whooper swans(Cygnus cygnus) inhabiting northeastern Mongolia,to determine their migration routes and stopover sites in spring and *** between spring and autumn migrations,migration-influencing parameters,and the effect of spring stopover site temperatures were *** swans completed perfect tours between their wintering and breeding sites,and these data were used for *** migration lasted 57 days,with 49.2 days spent at 3.7 stopover *** migration lasted 21.5 days,with 17.5 days spent at 1.0 stopover ***,the swans traveled more rapidly in autumn than in *** distance,number of stopovers,migration speed,and straightness were important migration determinants in both spring and *** distance,stopover duration,number of stopovers,daily travel speed,travel duration,and migration speed differed significantly between spring and *** spring migration,the temperature at the current stopover sites and that at the future stopover sites displayed significant variations(t=1585.8,df=631.6,p whooper swans and their key habitats in East Asian regions,and the data are anticipated to make a particularly significant contribution toward developing detailed management plans for the conservation of their key habitats.

关键词： Key stopover sites Migration characteristics Migration route Migration strategy Tracking whooper swan

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