The Draft Genome Dataset of the Asian Cricket Teleogryllus occipitalis for Molecular Research Toward Entomophagy

Kataoka, Kosuke; Minei, Ryuhei; Ide, Keigo; Ogura, Atsushi; Takeyama, Haruko; Takeda, Makio; Suzuki, Takeshi; Yura, Kei; Asahi, Toru

doi:10.3389/fgene.2020.00470

Cited by 27 publications

(19 citation statements)

References 41 publications

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“…Since the coverage of ONT reads was low, the usage of them were limited only to the gap closing. The genome size of the mangrove cricket is comparable with the three previously sequenced Gryllidae genomes: Teleogryllus occipitalis (1.93 Gb) [30], Teleogryllus oceanicus (2.05 Gb) [31], and Laupala kohalensis (1.6 Gb) [32].…”

Section: Limitationssupporting

confidence: 69%

De novo assembly and annotation of the mangrove cricket genome

et al. 2021

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Objectives The mangrove cricket, Apteronemobius asahinai, shows endogenous activity rhythms that synchronize with the tidal cycle (i.e., a free-running rhythm with a period of ~ 12.4 h [the circatidal rhythm]). Little is known about the molecular mechanisms underlying the circatidal rhythm. We present the draft genome of the mangrove cricket to facilitate future molecular studies of the molecular mechanisms behind this rhythm. Data description The draft genome contains 151,060 scaffolds with a total length of 1.68 Gb (N50: 27 kb) and 92% BUSCO completeness. We obtained 28,831 predicted genes, of which 19,896 (69%) were successfully annotated using at least one of two databases (UniProtKB/SwissProt database and Pfam database).

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Section: Limitationssupporting

confidence: 69%

De novo assembly and annotation of the mangrove cricket genome

et al. 2021

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“…We sequenced the genomic DNA of T. emma , T. occipitalis, G. bimaculatus, A. domesticus , Gryllodes sp., Tarbinskiellus sp., M. kubotai, and Myrmecophilus sp., with short-read next generation sequencer and performed de novo assembly of their mtgenomes. The new mtgenomes contained 37 typical insect mitochondrial genes, including 13 protein-coding, 22 tRNA, and two rRNA genes, as previously reported in cricket mtgenomes ( Kataoka et al 2020 ) ( supplementary tables 1 and 2 , Supplementary Material online). The length of complete mtgenomes ranges from 15,120 bp in Truljalia hibinonis to 16,589 bp in Ornebius kanetataki ( supplementary table 1 , Supplementary Material online).…”

Section: Resultsmentioning

confidence: 57%

Comparative Analysis of Mitochondrial Genomes in Gryllidea (Insecta: Orthoptera): Implications for Adaptive Evolution in Ant-Loving Crickets

Sanno

Kataoka

Hayakawa

et al. 2021

Genome Biology and Evolution

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Species of infraorder Gryllidea, or crickets, are useful invertebrate models for studying developmental biology and neuroscience. They have also attracted attention as alternative protein sources for human food and animal feed. Mitochondrial genomic information on related invertebrates, such as katydids, and locusts, has recently become available in attempt to clarify the controversial classification schemes, although robust phylogenetic relationships with emphasis on crickets remain elusive. Here, we report newly sequenced complete mitochondrial genomes of crickets to study their phylogeny, genomic rearrangements, and adaptive evolution. First, we conducted de novo assembly of mitochondrial genomes from eight cricket species and annotated protein-coding genes (PCGs) and transfer and ribosomal RNAs using automatic annotations and manual curation. Next, by combining newly described PCGs with public data of the complete Gryllidea genomes and gene annotations, we performed phylogenetic analysis and found gene order rearrangements in several branches. We further analyzed genetic signatures of selection in ant-loving crickets (Myrmecophilidae), which are small wingless crickets that inhabit ant nests. Three distinct approaches revealed two positively selected sites in the cox1 gene in these crickets. Protein 3D structural analyses suggested that these selected sites could influence the interaction of respiratory complex proteins, conferring benefits to ant-loving crickets with a unique ecological niche and morphology. These findings enhance our understanding of the genetic basis of cricket evolution without relying on estimates based on a limited number of molecular markers.

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“…As will be discussed in the later sections, genome and transcriptome information on crickets will contribute to the domestication of crickets and to the food production supported by insects. The genome of T. occipitalis was sequenced by the authors, explicitly intending to be applied for the first time to an alternative animal protein for human food and animal feed (Kataoka et al 2020). T. occipitalis is mentioned in the Food and Agriculture Organization of the United Nations (FAO) report and is one of the edible species reared in Asian countries (van Huis et al 2013).…”

Section: Entomophagymentioning

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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The Draft Genome Dataset of the Asian Cricket Teleogryllus occipitalis for Molecular Research Toward Entomophagy

Cited by 27 publications

References 41 publications

De novo assembly and annotation of the mangrove cricket genome

De novo assembly and annotation of the mangrove cricket genome

Comparative Analysis of Mitochondrial Genomes in Gryllidea (Insecta: Orthoptera): Implications for Adaptive Evolution in Ant-Loving Crickets

Dissecting cricket genomes for the advancement of entomology and entomophagy

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