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Newsletter : Center for Southeast Asian Studies, Kyoto University No.66
Get PDFEditorial [4]Eating from the Same Bowl: Japanese Reflections of Southeast Asian Studies … Tanaka Koji [5]Inequality in Thailand and Japan … Pasuk Phongpaichit [10]Myanmar's ASEAN Chairmanship in 2014: Legitimacy, Salvation and Interests … Pavin Chachavalpongpun [13]Termites' Merciless Acts of Respect toward their Sick and Dead Nestmates … Kok-Boon Neoh [17]Sustainable use of Rich Bird Diversity in "Biomass Society" … Motoko S. Fujita [19]From Dead Zone to Destination: Tourism and the Charting of the BIMP-EAGA Subregion … Lou Antolihao, Hiromu Shimizu [22]Locating 'Green Neoliberalism', and Other Forms of Environmental Governance in Southeast AsiaLibrary … Keith Barney [25]Southeast Asia's New High Rollers … Gianluca Bonanno [29]Publications [31]Visiting Fellows [33
DataSheet_1_Urbanization causes shifts in the functional traits and foraging activity, and alters food particle size preference and biomass removal of urban-dwelling ants.pdf
No full textUrbanization may lead to changes in assemblage and result in shifts in trait distribution from natural habitats to highly urbanized habitats. The shift in functional traits can affect ecosystem functions in urban areas. This study explored the foraging period of ants over 72 h and determined the relationship between the behavioral, morphological, and physiological traits of local foragers ants and environmental conditions in urban and forest sites. In addition, this study examined the ants’ ecosystem functions and compared it with that of their forest counterparts. Our results revealed that the foraging period of ants (i.e., Cardiocondyla sp.1, Monomorium chinense, Paratrechina longicornis, Pheidole megacephala, and Solenopsis sp.1) in urban areas peaked between 0900 and 1500 and that of some ants (i.e., Carebara diversa, P. megacephala, Pheidole fervens, Plagiolepis longwang, and Nylanderia sp.1) in forest areas was constant over time. For urban ants, a weak correlation was observed between foraging period and body size traits (i.e., Weber’s length and head width). This finding indicates that the major factor underlying the change in the foraging period might not be related to body size. Rather, the change may be attributed to synchronization between food availability and human activity (waste disposal; i.e., between 0900 and 1800). The shift in the functional traits of ants affects ecosystem functions in urban areas. In urban areas, although only one predatory ant species (P. megacephala) was sampled, its activity density was high. Most of these individuals were active during the daytime, indicating that the predatory behavior of ants in the novel urban environment has decreased temporally and is limited to the daytime. Urban ants tended to choose smaller food particles, whereas forest ants preferred larger food particles and had a twofold higher food removal rate.</p
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Developmental Stages and Caste Composition of a Mature and Incipient Colony of the Drywood Termite, Cryptotermes dudleyi (Isoptera: Kalotermitidae)
No full textFlight Activity and Flight Phenology of the Asian Subterranean Termite, Coptotermes gestroi (Blattodea: Rhinotermitidae)
No full textABSTRACT e ight activity and ight phenology of the Asian subterranean termite, Coptotermes gestroi (Wasmann), was investigated by the use of sticky traps over a period of 12 months in northeastern Peninsular Malaysia. Flight activity was evident throughout the year and the largest swarms occurred between January and June. Most ights were con ned to the following environmental conditions: atmospheric pressure of 1,009-1,010 hPa, temperature of 27 -28°C and 83 -84% RH. e number of trapped alates was signi cantly correlated (P < 0.05) to atmospheric pressure and temperature. Rain was not required to trigger alate dispersal on ight days
The Parasitoid,<i>Verticia fasciventris</i>Causes Morphological and Behavioral Changes in Infected Soldiers of the Fungus-Growing Termite,<i>Macrotermes carbonarius</i>
No full textUrbanization causes shifts in the functional traits and foraging activity, and alters food particle size preference and biomass removal of urban-dwelling ants
Get PDFUrbanization may lead to changes in assemblage and result in shifts in trait distribution from natural habitats to highly urbanized habitats. The shift in functional traits can affect ecosystem functions in urban areas. This study explored the foraging period of ants over 72 h and determined the relationship between the behavioral, morphological, and physiological traits of local foragers ants and environmental conditions in urban and forest sites. In addition, this study examined the ants’ ecosystem functions and compared it with that of their forest counterparts. Our results revealed that the foraging period of ants (i.e., Cardiocondyla sp.1, Monomorium chinense, Paratrechina longicornis, Pheidole megacephala, and Solenopsis sp.1) in urban areas peaked between 0900 and 1500 and that of some ants (i.e., Carebara diversa, P. megacephala, Pheidole fervens, Plagiolepis longwang, and Nylanderia sp.1) in forest areas was constant over time. For urban ants, a weak correlation was observed between foraging period and body size traits (i.e., Weber’s length and head width). This finding indicates that the major factor underlying the change in the foraging period might not be related to body size. Rather, the change may be attributed to synchronization between food availability and human activity (waste disposal; i.e., between 0900 and 1800). The shift in the functional traits of ants affects ecosystem functions in urban areas. In urban areas, although only one predatory ant species (P. megacephala) was sampled, its activity density was high. Most of these individuals were active during the daytime, indicating that the predatory behavior of ants in the novel urban environment has decreased temporally and is limited to the daytime. Urban ants tended to choose smaller food particles, whereas forest ants preferred larger food particles and had a twofold higher food removal rate
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