The Thermal Tolerance of Springtails in a Tropical Cave, with the Description of a New <i>Coecobrya</i> Species (Collembola: Entomobryidae) from Thailand
A new species of Collembola in the genus <i>Coecobrya</i>, <i>C. microphthalma</i> <b>sp. nov.</b>, is described from a cave environment in Saraburi province, central Thailand. The new species is the second described species of the <i>boneti</i>-group...
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2025-01-01
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| author | Nongnapat Manee Louis Deharveng Cyrille A. D’Haese Areeruk Nilsai Satoshi Shimano Sopark Jantarit |
| author_facet | Nongnapat Manee Louis Deharveng Cyrille A. D’Haese Areeruk Nilsai Satoshi Shimano Sopark Jantarit |
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| description | A new species of Collembola in the genus <i>Coecobrya</i>, <i>C. microphthalma</i> <b>sp. nov.</b>, is described from a cave environment in Saraburi province, central Thailand. The new species is the second described species of the <i>boneti</i>-group found in the country. It is most similar to <i>C. chompon</i> Nilsai, Lima & Jantarit, 2022, which is also described from a Thai cave. However, the new species is morphologically different from <i>C. chompon</i> in having orange dot pigmentation on its body and a combination of other morphological characteristics such as the number of sublobal hairs on the maxillary outer lobe and the number of medio-sublateral mac on Th. II, Abd. I, Abd. III and Abd. IV and the anterior face of the ventral tube. The morphological comparison of all known <i>boneti</i> species and a key to the world species of <i>Coecobrya</i> of the <i>boneti</i>-group are given. <i>Coecobrya microphthalma</i> <b>sp. nov.</b> was successfully cultured in the laboratory. The thermal tolerance of the new species was studied and tested with seven different temperature experiments (27 °C as a control, 30, 32, 33, 34, 35 and 36 °C). The results showed that <i>C. microphthalma</i> <b>sp. nov.</b> cannot survive at a temperature higher than 32 °C after exposure to the experimental heat for 7 and 14 consecutive days. At 27, 30 and 32 °C, <i>C. microphthalma</i> <b>sp. nov.</b> remained alive and produced eggs, but the duration of egg production and number of egg-laying days significantly declined when the temperature increased (<i>p</i> < 0.001). An interesting aspect of their reproduction concerns temperature. At 32 °C (5 °C above the control temperature), the F1 generation survived, was active and was able to molt to the adult stage. However, specimens were unable to produce the next generation of offspring. For postembryonic development, <i>C. microphthalma</i> <b>sp. nov.</b> required six molts to reach the adult stage. The development rate (from egg to adult) varied and differed significantly between the tested temperatures (<i>p</i> < 0.001). An increase in temperature from the control temperature significantly accelerated the developmental rate from egg to juvenile instars to adult with a statistical significance (<i>p</i> < 0.01). This study is the first attempt that provide information on the impact of increasing temperature on the population dynamics, reproductive capacity and life history of a subterranean tropical Collembola. |
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| spelling | doaj-art-b03c013b818643c58aaddd3f487eab4f2025-01-24T13:35:49ZengMDPI AGInsects2075-44502025-01-011618010.3390/insects16010080The Thermal Tolerance of Springtails in a Tropical Cave, with the Description of a New <i>Coecobrya</i> Species (Collembola: Entomobryidae) from ThailandNongnapat Manee0Louis Deharveng1Cyrille A. D’Haese2Areeruk Nilsai3Satoshi Shimano4Sopark Jantarit5Division of Biological Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, ThailandInstitut de Systématique, Evolution, Biodiversité (ISYEB)—UMR 7205 CNRS, Muséum National d’Histoire Naturelle, Sorbonne Université, 45 rue Buffon, 75005 Paris, FranceMécanisme Adaptatifs & Evolution (MECADEV)—UMR 7179 CNRS, Muséum National d’Histoire Naturelle, Sorbonne Université, 45 rue Buffon, 75005 Paris, FranceFaculty of Science and Digital Innovation, Thaksin University, 222, Papayom District, Phatthalung 93210, ThailandScience Research Center, Hosei University, Fujimi, Chiyoda-ku, Tokyo 102-8160, JapanExcellence Center for Biodiversity of Peninsular Thailand, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, ThailandA new species of Collembola in the genus <i>Coecobrya</i>, <i>C. microphthalma</i> <b>sp. nov.</b>, is described from a cave environment in Saraburi province, central Thailand. The new species is the second described species of the <i>boneti</i>-group found in the country. It is most similar to <i>C. chompon</i> Nilsai, Lima & Jantarit, 2022, which is also described from a Thai cave. However, the new species is morphologically different from <i>C. chompon</i> in having orange dot pigmentation on its body and a combination of other morphological characteristics such as the number of sublobal hairs on the maxillary outer lobe and the number of medio-sublateral mac on Th. II, Abd. I, Abd. III and Abd. IV and the anterior face of the ventral tube. The morphological comparison of all known <i>boneti</i> species and a key to the world species of <i>Coecobrya</i> of the <i>boneti</i>-group are given. <i>Coecobrya microphthalma</i> <b>sp. nov.</b> was successfully cultured in the laboratory. The thermal tolerance of the new species was studied and tested with seven different temperature experiments (27 °C as a control, 30, 32, 33, 34, 35 and 36 °C). The results showed that <i>C. microphthalma</i> <b>sp. nov.</b> cannot survive at a temperature higher than 32 °C after exposure to the experimental heat for 7 and 14 consecutive days. At 27, 30 and 32 °C, <i>C. microphthalma</i> <b>sp. nov.</b> remained alive and produced eggs, but the duration of egg production and number of egg-laying days significantly declined when the temperature increased (<i>p</i> < 0.001). An interesting aspect of their reproduction concerns temperature. At 32 °C (5 °C above the control temperature), the F1 generation survived, was active and was able to molt to the adult stage. However, specimens were unable to produce the next generation of offspring. For postembryonic development, <i>C. microphthalma</i> <b>sp. nov.</b> required six molts to reach the adult stage. The development rate (from egg to adult) varied and differed significantly between the tested temperatures (<i>p</i> < 0.001). An increase in temperature from the control temperature significantly accelerated the developmental rate from egg to juvenile instars to adult with a statistical significance (<i>p</i> < 0.01). This study is the first attempt that provide information on the impact of increasing temperature on the population dynamics, reproductive capacity and life history of a subterranean tropical Collembola.https://www.mdpi.com/2075-4450/16/1/80breeding experimentcave speciesglobal warminglife history traitsthermal tolerancetaxonomy |
| spellingShingle | Nongnapat Manee Louis Deharveng Cyrille A. D’Haese Areeruk Nilsai Satoshi Shimano Sopark Jantarit The Thermal Tolerance of Springtails in a Tropical Cave, with the Description of a New <i>Coecobrya</i> Species (Collembola: Entomobryidae) from Thailand Insects breeding experiment cave species global warming life history traits thermal tolerance taxonomy |
| title | The Thermal Tolerance of Springtails in a Tropical Cave, with the Description of a New <i>Coecobrya</i> Species (Collembola: Entomobryidae) from Thailand |
| title_full | The Thermal Tolerance of Springtails in a Tropical Cave, with the Description of a New <i>Coecobrya</i> Species (Collembola: Entomobryidae) from Thailand |
| title_fullStr | The Thermal Tolerance of Springtails in a Tropical Cave, with the Description of a New <i>Coecobrya</i> Species (Collembola: Entomobryidae) from Thailand |
| title_full_unstemmed | The Thermal Tolerance of Springtails in a Tropical Cave, with the Description of a New <i>Coecobrya</i> Species (Collembola: Entomobryidae) from Thailand |
| title_short | The Thermal Tolerance of Springtails in a Tropical Cave, with the Description of a New <i>Coecobrya</i> Species (Collembola: Entomobryidae) from Thailand |
| title_sort | thermal tolerance of springtails in a tropical cave with the description of a new i coecobrya i species collembola entomobryidae from thailand |
| topic | breeding experiment cave species global warming life history traits thermal tolerance taxonomy |
| url | https://www.mdpi.com/2075-4450/16/1/80 |
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