Comparison of behavior and foraging ability between two congeneric species of large-bodied diving beetle (Coleoptera: Dytiscidae) larvae, a non-expanding species and a distribution-expanding species DOI Creative Commons
Taichi Fukuoka, Shin‐ya Ohba,

Masahide Yuma

et al.

European Journal of Entomology, Journal Year: 2025, Volume and Issue: 122, P. 56 - 64

Published: March 20, 2025

Global warming has altered the distribution of several insect species, including those inhabiting aquatic environments and this range expansion may modify existing interspecific interactions by facilitating new encounters between species that were not originally sympatric. is highly likely to expand Cybister tripunctatus lateralis (Coleoptera: Dytiscidae) in Japan, leading competition for food resources among congeneric species. In particular, larvae share similar feeding habits, suggesting occur, although yet been verified. Therefore, study aimed compare microhabitat use foraging abilities two - C. with an expanded area brevis, a non-expanding body size. We compared (1) behavior quantified visual scan census, (2) time taken reach food, number prey animals consumed each laboratory experiments. The results indicated behavioral patterns tended involve mainly perch rest on plants. There no clear differences there variations instars. was difference species; however, it evident reached earlier than brevis. suggested utilize common underwater microhabitat, competitive advantage over brevis terms resources. However, further experimental verification continued trends should be carefully monitored, as reproductive habitats field differ advantages depend water temperature.

Language: Английский

Comparison of behavior and foraging ability between two congeneric species of large-bodied diving beetle (Coleoptera: Dytiscidae) larvae, a non-expanding species and a distribution-expanding species DOI Creative Commons
Taichi Fukuoka, Shin‐ya Ohba,

Masahide Yuma

et al.

European Journal of Entomology, Journal Year: 2025, Volume and Issue: 122, P. 56 - 64

Published: March 20, 2025

Global warming has altered the distribution of several insect species, including those inhabiting aquatic environments and this range expansion may modify existing interspecific interactions by facilitating new encounters between species that were not originally sympatric. is highly likely to expand Cybister tripunctatus lateralis (Coleoptera: Dytiscidae) in Japan, leading competition for food resources among congeneric species. In particular, larvae share similar feeding habits, suggesting occur, although yet been verified. Therefore, study aimed compare microhabitat use foraging abilities two - C. with an expanded area brevis, a non-expanding body size. We compared (1) behavior quantified visual scan census, (2) time taken reach food, number prey animals consumed each laboratory experiments. The results indicated behavioral patterns tended involve mainly perch rest on plants. There no clear differences there variations instars. was difference species; however, it evident reached earlier than brevis. suggested utilize common underwater microhabitat, competitive advantage over brevis terms resources. However, further experimental verification continued trends should be carefully monitored, as reproductive habitats field differ advantages depend water temperature.

Language: Английский

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