Resource allocation strategies and mechanical constraints drive the diversification of stick and leaf insect eggs DOI Creative Commons
Romain Boisseau, H. Arthur Woods

Current Biology, Journal Year: 2024, Volume and Issue: 34(13), P. 2880 - 2892.e7

Published: June 18, 2024

The diversity of insect eggs is astounding but still largely unexplained. Here, we apply phylogenetic analyses to 208 species stick and leaf insects, coupled with physiological measurements metabolic rate water loss on five species, evaluate classes factors that may drive egg morphological diversification: life history constraints, material costs, mechanical ecological circumstances. We show support for all three classes, size primarily influenced by female body strongly trades off number. Females lay relatively fewer larger eggs, which develop more slowly because disproportionately low rates, also tend bury or glue them in specific locations instead simply dropping from the foliage (ancestral state). This form parental care then directly favors elongated facilitate their placement allow easier passage through oviducts slender species. In addition, flightless females display a higher reproductive output consequently compared flight-capable females. Surprisingly, local climatic conditions had only weak effects traits. Overall, our results suggest diversification driven complex web causal relationships among traits, dominant resource allocation oviposition strategies, constraints.

Language: Английский

Resource allocation strategies and mechanical constraints drive the diversification of stick and leaf insect eggs DOI Creative Commons
Romain Boisseau, H. Arthur Woods

Current Biology, Journal Year: 2024, Volume and Issue: 34(13), P. 2880 - 2892.e7

Published: June 18, 2024

The diversity of insect eggs is astounding but still largely unexplained. Here, we apply phylogenetic analyses to 208 species stick and leaf insects, coupled with physiological measurements metabolic rate water loss on five species, evaluate classes factors that may drive egg morphological diversification: life history constraints, material costs, mechanical ecological circumstances. We show support for all three classes, size primarily influenced by female body strongly trades off number. Females lay relatively fewer larger eggs, which develop more slowly because disproportionately low rates, also tend bury or glue them in specific locations instead simply dropping from the foliage (ancestral state). This form parental care then directly favors elongated facilitate their placement allow easier passage through oviducts slender species. In addition, flightless females display a higher reproductive output consequently compared flight-capable females. Surprisingly, local climatic conditions had only weak effects traits. Overall, our results suggest diversification driven complex web causal relationships among traits, dominant resource allocation oviposition strategies, constraints.

Language: Английский

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