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RISS 인기검색어
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- 저자 : Desiree M. Hautea (검색결과 2 건)
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Mark Gabriel S. Sagarbarria,John Carlo M. Marasigan,Lourdes D. Taylo,Desiree M. Hautea 한국응용곤충학회 2018 Journal of Asia-Pacific Entomology Vol.21 No.3
Morphological and molecular analysis of 15 Philippine populations of eggplant fruit and shoot borer (EFSB), Leucinodes orbonalis Guenée were conducted to determine if these populations are constituted singly by L. orbonalis or by different species and to assess the level of variability among them. Morphometric analysis of five genital traits of 850 male adult EFSB from field populations and analysis of the COI gene sequence of 879 F1 EFSB larvae from 15 main eggplant-producing provinces identified all individuals as belonging to L. orbonalis. Principal Component Analysis of five morphometric genital characters revealed high similarity among the EFSB populations regardless of geographic location. Thirteen (13) sequence variants (haplotypes) were identified, with one haplotype predominant and widespread throughout the country. The remaining haplotypes occurred rarely and differed from the widespread haplotype by one mutation. Overall, the EFSB populations from Philippines exhibited low nucleotide and haplotype diversity, indicating low genetic diversity. Topologies from a maximum likelihood tree indicate all thirteen haplotypes cluster in a single clade with EFSB populations from India and other South-East Asian countries. Further analysis with the Generalized Mixed Yule Coalescent (GMYC) method classified the different haplotypes into a single GMYC entity. Combined with morphometric analysis, differences between haplotypes are not suggestive of any subspecies. Negative values of Tajima's D and Fu's Fs tests combined with the phylogenetic analysis and overall low genetic diversity of Philippine populations support the hypothesis that EFSB is not endemic but introduced to the Philippines.
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Sagarbarria Mark Gabriel S.,Taylo Lourdes D.,Hautea Desiree M. 한국응용곤충학회 2020 Journal of Asia-Pacific Entomology Vol.23 No.2
Eggplant (Solanum melongena L.) is the leading vegetable grown and consumed in the Philippines, and the eggplant leafhopper is one of its most important insect pests. Nine local populations of leafhopper infesting eggplants were collected from major eggplant growing areas in Luzon Island to determine if these populations are constituted singly or by different species and to assess the level of variability among them. Morphological analysis of the adult male abdominal and genital traits and partial mitochondrial COI gene sequence identified the eggplant leafhopper populations in Luzon Island as belonging to Amrasca (=Sundapteryx) biguttula (Ishida) (Hemiptera:Cicadelliae). Observed male specimens exhibited modifications in the pregenital abdominal tergites VII and VIII that were previously reported to not be found in other Amrasca species. Principal Component Analysis of four morphometric genital traits revealed high similarity among the leafhopper populations regardless of eggplant production areas. Partial COI sequence analysis idenfitied 11 sequence variants (haplotypes), with one predominant haplotype. Overall, the leafhopper populations from Luzon Island exhibited moderate haplotype diversity and low nucleotide diversity, indicating low genetic diversity. Topologies from a maximum likelihood tree indicate all eleven haplotypes cluster in a single clade with other A. biguttula infesting cotton and potato in India, but the Philippine population forms a separate subgroup although with weak bootstrap support. Further analysis with the Generalized Mixed Yule Coalescent (GMYC) method classified the different haplotypes into a single GMYC entity.
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