Descriptions of a new genus and a new species, <i>Grylloprimevala jilina</i> (Grylloblattidae) from China

Zhou, Lin; Chen, Qi; Ke, Haoqin; Wang, Zizhuo; Peng, Jie; Wu, Donghui; Liu, Ying; Feng, Jingchun; Ren, Bingzhong

doi:10.1002/ece3.9750

Cited by 2 publications

(8 citation statements)

References 45 publications

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“…G. jilina does not need to retain the comprehensive chemical signal‐sensing ability, and less gene expression will reduce meaningless energy consumption (Wagner, 2005). Such a gene set suggests G. jilina 's adaptation to the barren and stable environment of the cave (Zhou et al., 2023). In addition, the BUSCO analysis reveals that many genes are missing from the assembly and this also might lead to our genes of interest not being detected.…”

Section: Discussionmentioning

confidence: 99%

“…G. jilina is a true cave creature living in the dark areas of caves. It has rare body pigment, degeneration of compound and monocular eyes, body surface sensors, and an obvious preference for high‐humidity and low‐temperature environments (Zhou et al., 2023). G. jilina is considered endangered because of its very limited and highly specific distribution (Zhou et al., 2023).…”

Section: Introductionmentioning

confidence: 99%

“…It has rare body pigment, degeneration of compound and monocular eyes, body surface sensors, and an obvious preference for high‐humidity and low‐temperature environments (Zhou et al., 2023). G. jilina is considered endangered because of its very limited and highly specific distribution (Zhou et al., 2023). However, so far, the limited studies on G. jilina mainly focused on its systematic classification.…”

Section: Introductionmentioning

confidence: 99%

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Transcriptome analysis and identification of genes related to environmental adaptation of Grylloprimevala jilina Zhou & Ren 2023

Zhou,

et al. 2023

Ecology and Evolution

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Grylloprimevala jilina is a true cave insect living in the dark areas of caves. It has the characteristics of sparse skin pigmentation, degeneration of the compound eyes and monocular eyes, and obvious preference for high‐humidity and low‐temperature environments. Given the highly specialized, rare, and limited distribution, G. jilina is considered an endangered species and also a first‐level national protected insect in China. Cave creatures often undergo dramatic morphological changes in their sensory systems to adapt to the cave environment. Most previous studies mainly focused on morphological adaptive changes in cave insects, and only a few studied the changes at the gene level. In this study, we performed transcriptome analysis of G. jilina and constructed phylogenetic trees of genes that are related to environmental adaptation, including chemosensory, visual‐related, reproduction‐related, temperature adaptation‐related, and winged morph differentiation‐related genes. Besides, the expression levels of environmental adaption‐related genes in different tissues, including antennae, heads, thoraxes, abdomens, legs, and tails, were analyzed. The results showed the loss of chemosensory genes and vision‐related genes, the conservation of reproduction‐related genes and temperature adaptation‐related genes, and the conservation of wing‐related genes despite the loss of wings, and the results were consistent with other cave insects. The identification and expression study of genes possibly related to the environmental adaptability in G. jilina provided basic data for the protection of this endangered species and increased knowledge about insect evolution in general.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Transcriptome analysis and identification of genes related to environmental adaptation of Grylloprimevala jilina Zhou & Ren 2023

Zhou,

et al. 2023

Ecology and Evolution

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“…Grylloblattodea is a small order of insects with ancient origins and primitive characteristics, and is a surviving group of ancient remnant insects, known as the "living fossils" of contemporary insects (Walker 1937). The Grylloblattodea are slow growing, usually solitary and omnivorous species that feed primarily on other insects and occasionally on plant fungi and decaying debris (Pritchard & Scholefield 1978;Zhou et al 2023). They live in complex environments, which are generally found in shady places, such as ice caves, glaciers, snow, ice surfaces at the edges of lakes, decaying wood or caves in woodlands.…”

Section: Introductionmentioning

confidence: 99%

“…The species of Grylloblattodea are listed as national first-class protected insects in China. Thus, the study of extant Grylloblattodea can help to inform the origin and evolution of the insect order (Zhou et al 2023). As previous studies in China have not focused on the morphological structure of the sensilla on the appendages of Grylloblattodea, we attempted to explore this aspect.…”

Section: Introductionmentioning

confidence: 99%

The morphology of the sensilla on the antennae, maxillary palps and cerci of Grylloprimevala jilina Zhou & Ren, 2023

Zhu,

Li,

Zhou

et al. 2024

Entomological Research

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Grylloprimevala jilina Zhou & Ren is the third extant species of Grylloblattodea to be found in China. To understand the various physiological functions of the sensilla on the main sensory organs of G. jilina during its vital activities, this study used scanning electron microscopy to examine the sensilla morphology on its appendages and analyze their abundance and distribution on the antennae. The filiform antennae comprise scape, pedicel and flagellum. The maxillary palps comprise three segments, and the cerci contain four appendages in total. Altogether, 11 morphologically distinct sensilla types were identified on three organs: apertures; Böhm bristles (BB); sensilla auricillica (SA), sensilla basiconica (SB), sensilla campaniformia (SCa), sensilla capitulum (SCap), sensilla chaetica (SCh), sensilla coeloconica (SCo), sensilla filiform (SF) and sensilla trichodea (ST); and spines. Studies of the antennae of G. jilina have revealed that, except in some cases, the types and abundances of the sensilla gradually show a trend of diversification and enrichment as the antennae segments are extended forward. Functional predictions for the 11 morphologically distinct sensilla suggest that they include chemoreceptors, mechanoreceptors and temperature or humidity receptors. As wall‐pore sensilla, SA, SB, SCo and ST could be involved in the perception of chemical signals emitted from their living environment. In addition, as mechanical receptors, BB, SCa, SCh and SF may be involved in the perception and feedback of mechanical stimuli. Our findings provide an essential insight into this rare and national first‐class protected insect, and provide a necessary theoretical basis for studying the phylogeny of Grylloblattodea.

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Descriptions of a new genus and a new species, Grylloprimevala jilina (Grylloblattidae) from China

Cited by 2 publications

References 45 publications

Transcriptome analysis and identification of genes related to environmental adaptation of Grylloprimevala jilina Zhou & Ren 2023

Transcriptome analysis and identification of genes related to environmental adaptation of Grylloprimevala jilina Zhou & Ren 2023

The morphology of the sensilla on the antennae, maxillary palps and cerci of Grylloprimevala jilina Zhou & Ren, 2023

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