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

Insight into the Phylogenetic Relationships of Phasmatodea and Selection Pressure Analysis of Phraortes liaoningensis Chen & He, 1991 (Phasmatodea: Lonchodidae) Using Mitogenomes DOI Creative Commons
Yuxin Chen,

Yani Yuan,

Wenhui Yang

et al.

Insects, Journal Year: 2024, Volume and Issue: 15(11), P. 858 - 858

Published: Nov. 3, 2024

Stick and leaf insects are a group among the Insecta that famous for their extraordinary mimicry ability. Since establishment of Phasmatodea, internal classification has been constantly revised. Mitochondrial genes as molecular markers have widely used species classification, but phylogenetic relationships within Phasmatodea remain to be thoroughly discussed. In present study, five mitogenomes ranging from 15,746 bp 16,747 in length were sequenced. Bayesian inference (BI) maximum likelihood (ML) analyses carried out based on 13 PCGs data matrix (nt123) combined two rRNA (nt123_rRNA). The study supports conclusion Phylliidae was basal Neophasmatodea confirms monophyly Lonchodinae Necrosciinae, it shows Lonchodidae polyphyletic. A sister Bacillidae Pseudophasmatidae also recovered. tree nt_123 dataset showed higher node support values. construction divergent time this supported extant originated Jurassic (170 Mya) most lineages diverged after Cretaceous-Paleogene extinction event. To explore whether mitochondrial

Language: Английский

Citations

1
Divergence time and environmental similarity predict the strength of morphological convergence in stick and leaf insects DOI Creative Commons
Romain Boisseau, Sven Bradler, Douglas J. Emlen

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 122(1)

Published: Dec. 23, 2024

Independent evolution of similar traits in lineages inhabiting environments (convergent or repeated evolution) is often taken as evidence for adaptation by natural selection, and used to illustrate the predictability evolution. Yet convergence rarely perfect two reasons. First, may not be they appear. Second, responses selection are contingent upon available genetic variation independent differ alleles, backgrounds, even developmental mechanisms responsible phenotypes question. Both impediments predicted increase length time separating increases, making it difficult discern their relative importance. We quantified environmental similarity extent show how habitat divergence each contribute observed patterns morphological 212 species stick leaf insects (order Phasmatodea). Dozens phasmid independently colonized habitats, repeatedly evolving parallel directions on a 23-trait morphospace, though magnitude direction these shifts varied. Lineages converging toward more ended up closer did closely related lineages, followed evolutionary trajectories arrive there than distantly ones. Remarkably, after accounting similarity, we that reduced at constant rate across 100 My separation, suggesting contingency can predictable, given sufficient spans time.

Language: Английский

Citations

1
Resource allocation strategies and mechanical constraints drive the diversification of stick and leaf insect eggs DOI Creative Commons
Romain Boisseau, H. Arthur Woods

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Nov. 13, 2023

Abstract The diversity of insect eggs is astounding but still largely unexplained. Here, we apply phylogenetic analyses to over 210 species stick and leaf insects (order Phasmatodea), coupled with physiological measurements metabolic rate water loss, evaluate several major 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. Consequently, females lay relatively fewer larger eggs, which develop more slowly because disproportionately low rates, 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 display a higher reproductive output consequently compared flight-capable females. Surprisingly, local climatic conditions had only weak effects on traits. Overall, our results suggest diversification driven complex web causal relationships among traits, dominant resource allocation strategies constraints.

Language: Английский

Citations

1
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

Citations

0