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Somsak Panha
Chulalongkorn University
EcologyMillipedeTaxonomy (biology)BiologyZoology
129Publications
13H-index
802Citations
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Publications 132
Newest
#1Arthit Pholyotha (Chula: Chulalongkorn University)H-Index: 1
#2Chirasak Sutcharit (Chula: Chulalongkorn University)H-Index: 9
Last. Somsak Panha (Chula: Chulalongkorn University)H-Index: 13
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#2Sergei I. GolovatchH-Index: 12
Last. Somsak PanhaH-Index: 13
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Two new species of Plusioglyphiulus are described from southern Cambodia. Plusioglyphiulus biserratussp. nov. is clearly distinguished from all congeners by the shape of the telopodites of the posterior gonopods which are distinctly serrate laterally and by the anterior gonopods showing only a pair of single, smooth and curved coxosternal processes. Plusioglyphiulus khmer sp. nov. is distinguished by having most crests on the collum being complete and male legs 1 showing long, prominent, one-seg...
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#1Shun Kobayashi (University of the Ryukyus)H-Index: 4
#2Tetsuo Denda (University of the Ryukyus)H-Index: 10
Last. Masako Izawa (University of the Ryukyus)H-Index: 14
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Although different flower-visiting frequencies and behaviors are known to cause differences in fruit set rates, the effects of different pollinators on the fruit set position are unclear. The climb...
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#1Ekgachai Jeratthitikul (MU: Mahidol University)H-Index: 1
Last. Somsak PanhaH-Index: 13
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Hirudinaria manillensis (Lesson, 1842), commonly known as the buffalo leech, shows a polymorphism of two ventral colorations. The green color morph has a plain green ventral surface and the red color morph has a brick-red ventral surface with two black submarginal stripes. Based on molecular and morphological evidence in the present study, these two color morphs were revealed as two different species. The red color morph fits well with the description of H. manillensis, while the green color mor...
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#2Sergei I. GolovatchH-Index: 12
Last. Somsak PanhaH-Index: 13
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A new, giant species of Trachyjulus from a cave in southern Thailand is described, illustrated, and compared to morphologically closely related taxa. This new species, T. magnus sp. nov., is much larger than all other congeners and looks especially similar to the grossly sympatric T. unciger Golovatch, Geoffroy, Mauries & VandenSpiegel, 2012, which is widespread in southern Thailand. Phylogenetic trees, both rooted and unrooted, based on a concatenated dataset of the COI and 28S genes of nine sp...
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#1Arthit Pholyotha (Chula: Chulalongkorn University)H-Index: 1
#2Chirasak Sutcharit (Chula: Chulalongkorn University)H-Index: 9
Last. Somsak Panha (Chula: Chulalongkorn University)H-Index: 13
view all 5 authors...
Knowledge of Myanmar land snails is based on the late eighteenth to early twentieth century literature and many species need to be re-investigated, especially in the genera Macrochlamys Gray, 1847 ...
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#1Chirasak SutcharitH-Index: 9
#2Fred NaggsH-Index: 12
Last. Somsak PanhaH-Index: 13
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Copyright Chirasak Sutcharit et al. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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#1Parin Jirapatrasilp (Chula: Chulalongkorn University)H-Index: 2
#2Thierry Backeljau (University of Antwerp)H-Index: 39
Last. Somsak Panha (Chula: Chulalongkorn University)H-Index: 13
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Abstract Semi-aquatic freshwater earthworms in the genus Glyphidrilus from Southeast Asia are characterized by both an extreme morphological crypsis among divergent phylogenetic lineages and a high morphological variability within the same phylogenetic lineages. The present study provides a new taxonomic framework for this problematic genus in SE Asia by integrating DNA sequence and morphological data. When single-locus and multilocus multispecies coalescent-based (MSC) species delimitation meth...
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#1Chirasak SutcharitH-Index: 9
#2Thierry BackeljauH-Index: 39
Last. Somsak PanhaH-Index: 13
view all 3 authors...
The taxonomy of the speciose genus Ganesella W.T. Blanford, 1863 and the endemic genus Globotrochus Haas, 1935 is unclear since the anatomical characters of the the type species of these two genera have never been reported before. Therefore, the present paper provides the first anatomical descriptions of the reproductive apparatus, pallial system and radula of Helix capitium Benson, 1848 and Helix onestera Mabille, 1887, the respective type species of Ganesella and Globotrochus. In addition, Gan...
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#1Beewah Ng (Chula: Chulalongkorn University)H-Index: 1
#2Ratmanee ChanabunH-Index: 4
Last. Somsak Panha (Chula: Chulalongkorn University)H-Index: 13
view all 3 authors...
Biological and behavioral responses of the tropical earthworm Perionyx excavatus towards different concentrations of abamectin were evaluated. Abamectin significantly reduced the biomass and reproduction (cocoon production) of P. excavatus as well as inducing histopathological alterations in the cuticle. Biomass loss was recorded in P. excavatus exposed to abamectin at a concentration as low as 0.1 mg active ingredient (a.i.) kg−1, while atrophy, another physiological response, was observed at a...
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