Member list
Current members
- Lan-Wei Yeh
- Ecology and evolution of Taiwanese Carabus ground beetles.
- Chung-Hsin Huang
- Master topic: Flucuating Asymmetry and Developmental Asymmetry of Cyclommatus mniszechi; PhD topic: Evolution of Mandible Morphology and Fighting Behavior in Stag Beetles
- Ying-Yuan Lo
- Systematics, Behavior and Evolution of Lynx Spiders.
- Leocris Batucan Jr.
- New Species and DNA Barcoding of the Mayfly (Ephemeroptera) in Mt. Malindang, Mindanao, Philippines.
- Chun-Yu Lin
- Parasitoid Wasps of Damselflies; Phylogenetics and Evolution Histories of Treehoppers
- Hsu-Yi Lin
- Fighting Behavior of Odontolabis siva parryi Stag Beetles
- Sheng Lin
- Transcriptome Profiling Psolodesmus mandarinus mandarinus Damselfly
- Pei-Hsuan Chang
- Min-Chen Lin
- Disruptive Camauflage of Colors of Pachyrhynchus Weevils.
- Masahiko Tanahashi
- Ecology and Evolution of Pachyrhynchus Weevils.
- Su-Ping Lin
- Symbiotic Yeasts of Stag Beetles
- Jun-Ying Wang
- Conservation of Mortonagrion hirosei Damselflies
- Chin-Han Hsiao
- Fighting Behavior of Rhaetulus crenatus Stag Beetles
- Wei-Zhe Tseng
- Systematics and Evolution of Weevils
- Cheng-Tse Yung
- Maternal Gift of Pachyrhynchus sarcitis Weevils
Past members
- Jo-Fan Wang
- Territorial behavior, trait evolution.
- Yu-Hsun Hsu
- Mating strategy, behavioural ecology, molecular ecology, population genetics, molecular phylogenetics, biostatistics.
- Yi-Shou Yang
- Reproductive Isolation of Psolodesmus mandarinus subspecies.
- Wataru Kojima
- Evolution of male sexual traits in Taiwanese scarab beetles.
- Zhen-Yi Chen
- Fighting behavior and reproductive strategy of stag beetles.
- Teng-Yu Liu
- Fighting behaviour and life history observation of a stag beetle Rhaetulus crenatus crenatus.
- Princess Angelie S. Casas
- Insect Diversity and Evolution
- Lu-Yi Wang
- Defense Mechanism of Pachyrhynchus weevils.
- Hui-Yun Tseng
- Aposematic coloration, island biogeography.
- Yu-Jen Yu
- Variation and Adaptation of wings.
- Yen-Ting Chen
- Systematics and evolution of insects.
- Yun-Chieh Cheng
- Damselfly larval diet, molecular evolution.
- Tai-Chia Chiang
- The effect of aposematic colors of Pachyrhynchus weevils on avian predators.
- Yong-Chao Su
- Behavioral ecology, sociobiology, population genetics, and molecular phylogenetics.
- I-Ting Hsiao
- Variation of genitalia in Euphaea amphicyana.
- Jyun-Huei Huang
- The fighting behavior of a stag beetle, Rhaetulus crenatus.
- Shi-Ting Wu
- Membracis Phyllotropis.
- Chiao-Wei Lin
- The fighting behavior of a stag beetle, Rhaetulus crenatus.
- Wei-Liang Xiao
- Variation of wing veins in Euphaea amphicyana.
- Hung-Nien Chen
- 1. The effect of typhoon on survivalship of Matrona cyanoptera. 2. Modes of phenotypic variation in Euphaea amphicyana.
- Chu-Yen Cheng
- Phylogeography of a Philippine's treehopper, Leptocentrus reponens.
- Che-Yu Kuan
- Variation of mandibles in stag beetles.
- Yat-Hung Lee
- Speciation of Euphaea damselflies.
- Ming-Yu Chen
- Phylogeography and population history of the treehoppers, Centrochares horifficus from the Philippines Archipelago.
- Shao-Chang Huang
- Visual Communication of Matrona cyanoptera
- Jen-Pan Huang
- Population Genetics and Phylogeographic Analyses of Formosan Damselfly, Euphaea Formosa (Insecta: Odonata: Euphaeidae) from Taiwan
- Wei-Yun Chen
- Molecular and Phylogenetic Characterization of Endosymbiotic Bacteria of the Froghopper, Okiscarta uchidae (Insecta: Hemiptera: Cercopidae)
Visiting scholars and students
- Jillian del Sol
- Behavioral Ecology; Mating System Ecology; Weapon Ecology and Evolution; Evolutionary Biology
- Ian Dela Cruz
- New Species and DNA Barcoding of the Stonefly (Plecoptera) in Mt. Malindang, Mindanao, Philippines.
- Shinya Komata
- Ecology & Evolution of Wing Polymorphism in a Mimetic Swallowtail Butterfly, Papilio memnon.
- Vanitha Williams
- Predatory potential of waterbug, Diplonychus rusticus and dragonfly, Diplacodes trivialis on mosquito larvae.
- Marina Vilenica
- Dragonfly composition (Insecta, Odonata) in wetland area of Turopolje region, Croatia
- Klaas-Douwe 'KD' B. Dijkstra
- History, diversity and identification of dragonflies and damselflies (Odonata).
- Erin McCullough
- " Diversification of weapon form: aerodynamic costs of beetle horns.
- Ashley E. King
- Intrasexual combat and intersexual antagonistic co-evolution in horned beetles.
Pei-Hsuan Chang
Title
Undergraduate Student 2018-2020; Master Student 2020-
Species: Psolodesmus mandarinus mandarinus
Project
Thermal Adaptation and Habitat Preference of Psolodesmus mandarinus Damselfly
Abstrct
E-mail：bessy5647@gmail.com
Psolodesmus mandarinus two subspecies
1. The Effect of Tempertaure on Larval Growth of Psolodesmus mandarinus mandarinus Subspecies
Abstract
Environmental temperature has a great impact on physiological performance or behavior of the ectotherms. In Odonata, survival and eclosion rate decrease when temperature increases. Endemic Psolodesmus mandarinus damselfly is divided into two subspecies (P. m. mandarinus, P. m. dorothea) in Taiwan. The wing patterns of two subspecies are divergent, however, there was no genetic differentiation found in previous studies. Psolodesmus m. mandarinus distributes north of Hsinchu and Suao, whereas P. m. dorothea distributes south of them. We hypothesize that the differences between the two subspecies were results of environmental factors, such as temperature. This study tested the hypothesis that the differences between the two subspecies result from the adaptation to the temperature of their habitats. The habitat temperature of P. m. dorothea is higher than that of P. m. mandarinus, so we predict that P. m. dorothea adapted to the environment with higher temperature. We collected the larvae of the two Psolodesmus mandarinus subspecies from the field, reared them in the incubators under 12℃, 16℃, 20℃, 24℃, 28℃, 30℃ and 32℃, then recorded their development. We used survival analysis to compare the mortality and eclosion rate of two subspecies under different temperature. The result shows that mortality and eclosion rate increased with higher temperature in both species. In addition, the mortality and eclosion rate of P. m. dorothea were higher than that of P. m. mandarinus under all experienmental temperatures. Psolodesmus. m. dorothea had a higher eclosion rate under higher temperatures. This result suggests that they adapted to higher temperature. There was no interaction between mortality and eclosion rate of the two subspecies and temperature, indicating the differentiation of the subspecies may not associate temperature.
Larvae of Psolodesmus mandarinus.
2. Do Two Subspecies of Psolodesmus mandarinus prefer different microhabitats?
Abstract
Habitat preferences of the animals have a close relationship with their fitness. The interaction of ectotherm’s pigmentation and environmental temperature may affect their body temperature and behavior. In Odonata, their body and wing colors are important in visual communication. Therefore, besides the environmental temperature, the body colors of odonates and the characteristics of the habitats may also affect their habitat preference. Psolodesmus mandarinus damselfly is divided into two subspecies (P. m. mandarinus, P. m. dorothea) in Taiwan. Psolodesmus m. mandarinus distributes north of Hsinchu and Suao, whereas P. m. dorothea distributes south of them. The wing patterns and agonistic behaviors of the two subspecies are divergent, however, there was no genetic differentiation found in previous studies. This makes us predict that the wing and distributional differences between the two subspecies are related to the habitat characteristics. This study tested thermal melanism hypothesis and visual signal hypothesis. We predict that the male P. m. mandarinus which has larger black area on the wing would prefer hotter perch sites to absorb the thermal energy and improve their flight ability, and they would prefer brighter sites to make the fighting signals more conspicuous. We recorded and compared the habitat characteristics of perch sites and random sites that P. mandarinus used in Fushan and Lienhuachih, including perch type, temperature and light intensity. Also, we used LIDAR to obtain leaf coverage and openness data in Fushan. We found that the perch type, temperature and light intensity were not significantly different between perch sites and random sites. These results suggest that the two subspecies do not show habitat preference. However, the perch sites and random sites of P. m. mandarinus in Fusan are hotter and brighter than that of P. m. dorothea in Lienchuachih. Data analysis of LIDAR showed that P. m. mandarinus prefer more coverage and lower openness sites, indicating that these perch sites may help males guard the territories of female oviposition and avoid attacks from the predators.
Thermal and lidar measurement of Psolodesmus mandarinus.
Lidar data of Psolodesmus mandarinus.