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RISS 인기검색어
- 검색키워드
- 주제어 : Platalea minor (검색결과 4 건)
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Lee, Mu-Yeong,Kwon, In-Ki,Lee, Kisup,Choi, Sung Kyoung,Jeon, Hey Sook,Lee, Ji-Yeon,Eo, Kyung-yeon,Kim, Hwa-Jung,Kim, Jin-Han,Johnson, Warren E.,Yoo, Jeong-Chil,An, Junghwa Elsevier 2017 Biochemical systematics and ecology Vol.71 No.-
<P><B>Abstract</B></P> <P>The endangered Black-faced Spoonbill <I>Platalea minor</I> has experienced drastic reductions in population size, geographic distribution, and habitat availability throughout East Asia. In the present study, we examined population genetic structure and genetic diversity of Black-faced Spoonbills inhabiting five sites off the west coast of South Korea encompassing a few of its major breeding sites. Ten microsatellite loci and the mitochondrial sequence were used to assess patterns of genetic variation based on 63 individuals. Three ND2 haplotypes were found among 61 individuals; the remaining two were identified as Eurasian Spoonbills, revealing an unexpected hybridization between these two species having different ecological niches in South Korea—the Eurasian Spoonbill overwinters in inland areas, whereas the Black-faced Spoonbill inhabits coastal areas during the summer. Analyses of microsatellite variation revealed no discrete population structure among the five breeding sites but very weak genetic differentiation among geographically distant regions. Assignment tests identified several possible migrants among sites. Our findings suggested that Black-faced Spoonbills from the five breeding sites could be managed as a single population and highlighted the importance of conserving the populations from Maedo, Suhaam, and Namdong reservoir, which are geographically close and have retained high levels of genetic diversity and large populations.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Ten polymorphic microsatellite loci and the mitochondrial DNA sequence were used to assess genetic diversity and structure. </LI> <LI> No discrete population structure among the five breeding sites in South Korea but very weak genetic differentiation among geographically distant regions. </LI> <LI> Black-faced Spoonbill individuals from the five breeding sites could be managed as a single population in South Korea. </LI> <LI> Unexpected hybridization between the Eurasian Spoonbill and the Black-faced Spoonbill was observed in our genetic studies. </LI> </UL> </P>
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In-Ki Kwon(권인기),Ji-Yeon Lee(이지연),Jong-Hyun Park(박종현),Eun-Joo Choi(최은주),Ki-Sup Lee(이기섭),Jeong-Chil Yoo(유정칠) 한국조류학회 2021 한국조류학회지 Vol.28 No.2
국제적인 멸종위기종인 저어새 (Platalea minor)는 깃털색은 암수 동형이나 몸크기는 수컷이 암컷보다 다소 큰 이형을 보이는 종이다. 본 연구에서는 이소 전 저어새 유조의 체중, 부척 길이, 부리 길이, 날개 길이 4가지 외부 형태 측정을 통해 성적 크기 이형을 연구하였다. 유전적 성구별 기법을 기반으로 외부측정치 자료를 이용하여 각 변수별 유의성을 고려한 단계적 판별분석과 잭나이프 검증을 실시하였다. 2011년부터 2015년까지 포획한 143개체 대상의 분석결과 성적 크기 이형이 가장 큰 측정치는 체중(15.8%)이었으며, 그 다음으로 부척 길이(10.9%), 부리 길이(5.1%), 날개 길이(3.3%) 순으로 나타났다. 부척 길이와 체중이 포함된 판별 함수가 가장 판별력이 높았으며 암수간 성별을 90.9% 정확도로 분류해내었다. Black-faced spoonbills (Platalea minor) are monomorphic in plumage; however, they present sexual dimorphism in terms of size, with males being slightly larger than females. Here, we examined sexual size dimorphism in the pre-fledgling chicks of Black-faced spoonbills to develop a useful sexing technique based on morphometric measurements. Forward stepwise discriminant function analysis of sex determination using a molecular technique was performed and tested through jackknife validation. Body mass culmen, wing, and tarsus length of 143 fledglings were measured between 2011 and 2015. Body mass (15.8%) was the most dimorphic variable, followed by tarsus (10.9%), culmen (5.1%), and wing (3.3%) length. The best discriminant function included tarsus length and body mass, which correctly classified 90.9% fledglings of this endangered species.
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공간자료를 활용한 멸종위기종 저어새(Platalea minor)의 적합 번식지 분석 연구
정진우 ( Jung Jin-woo ),김선령 ( Kim Sunryoung ),윤영준 ( Yoon Young-jun ),도재화 ( Tho Jae-hwa ),한영덕 ( Han Yeong-deok ),장래하 ( Jang Rae-ha ) 한국환경복원기술학회 2023 한국환경복원기술학회지 Vol.26 No.6
This study analyzed potential breeding sites for black-faced spoonbills on 70 non-breeding, uninhabited islands in Incheon, Korea, in order to suggest potential breeding sites for black-faced spoonbills, whose breeding population has recently been increasing. By comparing the environmental characteristics of breeding and non-breeding areas identified through a literature search, we developed a discriminant to identify potential breeding areas for black-faced spoonbills. Among a total of eight environmental variables(Island area, distance from land, distance to mudflat, distance to rice field, distance to sea route, depth of water, mudflat area, rice field area), the variables that influenced the selection of breeding sites for black-faced spoonbills were average water depth, tidal flat area, and paddy field area. As a result of discriminant analysis of breeding islands using these variables, the accuracy was found to be quite high at 80%. As a result of applying the developed discriminant to non-breeding islands located in the Incheon region, a total of 9 islands(Yongrando, Goseokdo, Beolyeom, Joreumseom, Goeriseom, Hambakdo, Moido, Bigajido, Ahyeom) were identified as potential breeding grounds for spoonbills. The research results can be used as basic data for future management of black-faced spoonbill breeding sites and selection of alternative habitats.
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공간자료를 활용한 멸종위기종 저어새(Platalea minor)의 적합 번식지 분석 연구
정진우,김선령,윤영준,도재화,한영덕,장래하 한국환경복원기술학회 2023 한국환경복원기술학회지 Vol.26 No.6
This study analyzed potential breeding sites for black-faced spoonbills on 70 non-breeding, uninhabited islands in Incheon, Korea, in order to suggest potential breeding sites for black-faced spoonbills, whose breeding population has recently been increasing. By comparing the environmental characteristics of breeding and non-breeding areas identified through a literature search, we developed a discriminant to identify potential breeding areas for black-faced spoonbills. Among a total of eight environmental variables(Island area, distance from land, distance to mudflat, distance to rice field, distance to sea route, depth of water, mudflat area, rice field area), the variables that influenced the selection of breeding sites for black-faced spoonbills were average water depth, tidal flat area, and paddy field area. As a result of discriminant analysis of breeding islands using these variables, the accuracy was found to be quite high at 80%. As a result of applying the developed discriminant to non-breeding islands located in the Incheon region, a total of 9 islands(Yongrando, Goseokdo, Beolyeom, Joreumseom, Goeriseom, Hambakdo, Moido, Bigajido, Ahyeom) were identified as potential breeding grounds for spoonbills. The research results can be used as basic data for future management of black-faced spoonbill breeding sites and selection of alternative habitats.
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