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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Genetic and Morphological Variation among Hatchery Stocks of Thai Silver Barb Barbonymus gonionotus (Bleeker, 1850)) ผู้เขียน: Santi Pannusa,  ดร.สุภาวดี พุ่มพวง, ศาสตราจารย์ , Wongpathom Kamonrat สื่อสิ่งพิมพ์:pdf AbstractMicrosatellite loci and truss morphometrics were used to discriminate eight hatchery stocks of silver barb (Barbonymus gonionotus) in Northeast Thailand. The results showed significant genetic (P < 0.0017) and morphological differences (P < 0.0017) in 18 and 25 out of 28 pair-wise comparisons, respectively. However, cluster analyses revealed a weak association between genetic differentiation and morphometric variation. Principal components analysis identified three truss measurements in the abdominal regions as the most powerful variables to distinguish stocks. Discriminant function analysis, based on 13 truss elements, assigned individuals to four distinct groups, and one group consisted of samples from four stocks. Among distinct stocks that showed variation in body shape, the Buri Ram samples displayed the largest body size as a result of breeding selection. The identity of a stock could be constructed from three measurements for body shape that were significantly correlated. Findings demonstrated the use of the truss morphometric approach in discriminating different hatchery stocks of silver barb within the studied stations. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Discrimination of Two Tetragonula (Apidae: Meliponini) Species in Thailand using Geometric Morphometric Analysis of Wing Venation) ผู้เขียน:Atsalek Rattanawannee, Orawan Duangpakdee, Preecha Rod-im, Randall Hepburn สื่อสิ่งพิมพ์:pdf AbstractGeometric morphometrics is a novel powerful tool for the identification of bee species and subspecies. An application of this method is presented to discriminate two stingless bee species, Tetragonula pagdeni Schwarz, 1939 and Tetragonula fuscobalteata Cameron, 1908, in Thailand based on forewing venation. Nine landmarks were measured from the digitized right forewing of 200 workers (10 bees per colony). Eleven colonies of T. pagdeni and nine colonies of T. fuscobalteata collected from several locations in Thailand were determined. The positions of the groups in the principal component analysis plots revealed that the species are clearly distinct. Multivariate analysis of variance (? = 0.01) showed a significant difference between the bees of the sibling species, producing a high degree of accuracy (96.50%) in the identification of any individual bee of either species. Therefore, it is proposed that geometric morphometric analysis of single wings might be an appropriate first step in the analysis and identification of stingless bees and other insects. |
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ผลงานตีพิมพ์ในวารสารวิชาการMorphological variation in brain through domestication of fowlผู้แต่ง:Kawabe, S, Tsunekawa, N, Kudo, K, Dr.Chanin Tirawattanawanich, Assistant Professor , Akishinonomiya, F, Endo, H, วารสาร:  
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ผลงานตีพิมพ์ในวารสารวิชาการPlanktonic and periphytic bdelloid rotifers from Thailand reveal a species assemblage with a combination of cosmopolitan and tropical speciesผู้แต่ง:Jaturapruek, R., Fontaneto, D., Meksuwan, P., Pholpunthin, P., Dr.Supiyanit Maiphae, Associate Professor , วารสาร: |
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