Mitochondrial genome characterization of <i>Gryllodes sigillatus</i> (Orthoptera: Gryllidae) and its phylogenetic implications

Yang, Junli; Dong, Han; He, Min; Gao, Jiguang

doi:10.1080/23802359.2021.1899078

Cited by 9 publications

(14 citation statements)

References 15 publications

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“…2). Recent studies using the mitochondrial genome and a combination of nuclear and mitochondrial genes have shown that Grylloidea and Gryllotalpoidea are monophyletic sister groups (Song et al 2015;Chintauan-Marquier et al 2016;Zhou et al 2017;Yang et al 2021;Sanno et al 2021). However, other studies or approaches have either not confirmed this relationship or have produced conflicting phylogenetic relationships (Song et al 2020;Sanno et al 2021).…”

Section: Gryllideamentioning

confidence: 99%

Dissecting cricket genomes for the advancement of entomology and entomophagy

et al. 2022

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Significant advances in biophysical methods such as next-generation sequencing technologies have now opened the way to conduct evolutionary and applied research based on the genomic information of greatly diverse insects. Crickets belonging to Orthoptera (Insecta: Polyneoptera), one of the most flourishing groups of insects, have contributed to the development of multiple scientific fields including developmental biology and neuroscience and have been attractive targets in evolutionary ecology for their diverse ecological niches. In addition, crickets have recently gained recognition as food and feed. However, the genomic information underlying their biological basis and application research toward breeding is currently underrepresented. In this review, we summarize the progress of genomics of crickets. First, we outline the phylogenetic position of crickets in insects and then introduce recent studies on cricket genomics and transcriptomics in a variety of fields. Furthermore, we present findings from our analysis of polyneopteran genomes, with a particular focus on their large genome sizes, chromosome number, and repetitive sequences. Finally, how the cricket genome can be beneficial to the food industry is discussed. This review is expected to enhance greater recognition of how important the cricket genomes are to the multiple biological fields and how basic research based on cricket genome information can contribute to tackling global food security.

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Section: Gryllideamentioning

confidence: 99%

Dissecting cricket genomes for the advancement of entomology and entomophagy

et al. 2022

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“…To do so, we fit mixed‐effects models with the same fixed effects, prior structure and chain parameters as mentioned before but omitting species as a fixed effect. Species was instead incorporated as a random effect, along with individual ID, with the relationship among species modelled according to the current phylogeny (Figure 1; Gray et al, 2020; Yang et al, 2021). All nodes in our phylogeny had high support (≥95%) in prior phylogenetic analyses (Gray et al, 2020; Yang et al, 2021).…”

Section: Methodsmentioning

confidence: 99%

“…Species was instead incorporated as a random effect, along with individual ID, with the relationship among species modelled according to the current phylogeny (Figure 1; Gray et al, 2020; Yang et al, 2021). All nodes in our phylogeny had high support (≥95%) in prior phylogenetic analyses (Gray et al, 2020; Yang et al, 2021). Although Gray et al (2020) provided divergence times, these were estimated with high uncertainty and unavailable across genera.…”

Section: Methodsmentioning

confidence: 99%

Phylogenetic conservation of behavioural variation and behavioural syndromes

Dalos

Royauté

Hedrick

et al. 2021

J of Evolutionary Biology

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Individuals frequently differ consistently from one another in their average behaviours (i.e. 'animal personality') and in correlated suites of consistent behavioural responses (i.e. 'behavioural syndromes'). However, understanding the evolutionary basis of this (co)variation has lagged behind demonstrations of its presence. This lag partially stems from comparative methods rarely being used in the field. Consequently, much of the research on animal personality has relied on 'adaptive stories' focused on single species and populations. Here, we used a comparative approach to examine the role of phylogeny in shaping patterns of average behaviours, behavioural variation and behavioural correlations. In comparing the behaviours and behavioural variation for five species of Gryllid crickets, we found that phylogeny shaped average behaviours and behavioural (co)variation. Despite differences among species, behavioural responses and variation were most similar among more closely related species. These results suggest that phylogenetic constraints play an important role in the expression of animal personalities and behavioural syndromes and emphasize the importance of examining evolutionary explanations within a comparative framework.

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“…CC-BY 4.0 International license perpetuity. It is made available under a preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in The copyright holder for this this version posted September 22, 2022. ; https://doi.org/10.1101/2022.09.21.508865 doi: bioRxiv preprint groups to Gryllidae in other studies (40,41). We found Tettigoniidae paraphyletic with respect to a clade consisting of Anostostomatidae (Hemideina) + Rhaphidophoridae (Ceuthophilus + Hadenoecus) that is placed as sister group to Meconematinae, albeit with poor support of 70% Bootstrap (Supplementary File 1).…”

Section: The Evolution Of Genome Sizementioning

confidence: 56%

New estimates of genome size in Orthoptera and their evolutionary implications

Hawlitschek

Sadílek

Dey

et al. 2022

Preprint

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Animal genomes vary widely in size, and much of their architecture and content remains poorly understood. Even among related groups, such as orders of insects, genomes may vary in size by orders of magnitude – for reasons unknown. The largest known insect genomes were repeatedly found in Orthoptera, e.g., Podisma pedestris (1C = 16.93 pg), Stethophyma grossum (1C = 18.48 pg) and Bryodemella holdereri (1C = 18.64 pg). While all these species belong to the suborder of Caelifera, the ensiferan Deracantha onos (1C = 19.60 pg) was recently found to have the largest genome. Here, we present new genome size estimates of 50 further species of Ensifera (superfamilies Gryllidea, Tettigoniidea) and Caelifera (Acrididae, Tetrigidae) based on flow cytometric measurements. We found that Bryodemella tuberculata (Caelifera: Acrididae) has the so far largest measured genome of all insects with 1C = 21.96 pg (21.48 gBp). Species with 2n = 16 and 2n = 22 chromosomes have significantly larger genomes than species with other chromosome counts. Gryllidea genomes vary between 1C = 0.95 and 2.88 pg, and Tetrigidae between 1C = 2.18 and 2.41, while the genomes of all other studied Orthoptera range in size from 1C = 1.37 to 21.96 pg. Reconstructing ancestral genome sizes based on a phylogenetic tree of mitochondrial genomic data, we found genome size values of >15.84 pg only for the nodes of Bryodemella holdereri/B. tuberculata and Chrysochraon dispar/Euthystira brachyptera. The predicted values of ancestral genome sizes are 6.19 pg for Orthoptera, 5.37 pg for Ensifera, and 7.28 pg for Caelifera. The reasons for the large genomes in Orthoptera remain largely unknown, but a duplication seems unlikely as chromosome numbers do not differ. Sequence-based genomic studies may shed light on the underlying evolutionary mechanisms.

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Mitochondrial genome characterization of Gryllodes sigillatus (Orthoptera: Gryllidae) and its phylogenetic implications

Cited by 9 publications

References 15 publications

Dissecting cricket genomes for the advancement of entomology and entomophagy

Dissecting cricket genomes for the advancement of entomology and entomophagy

Phylogenetic conservation of behavioural variation and behavioural syndromes

New estimates of genome size in Orthoptera and their evolutionary implications

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