Factors influencing the duration of death feigning in Eucryptorrhynchus scrobiculatus and E. brandti (Coleoptera: Curculionidae)

Li, Huijuan; Wen, Junbao

doi:10.1007/s10164-021-00730-1

Cited by 6 publications

(5 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The metaventrite (the metathorax between the middle and hind legs) has been shown to be the most effective stimulus-sensing region to induce death feigning (Li et al, 2019;Li and Wen, 2022). Thus, the E. scrobiculatus metaventrite was processed for scanning electron microscopy.…”

Section: Microstructure Anatomy Distribution and Number Of Sensilla I...mentioning

confidence: 99%

“…Each experimental E. scrobiculatus was placed in a stock culture container (2×3.5 cm, diameter×height) with no feeding to observe the death-feigning behaviour as in the above method (see 'Sample collection', above). In brief, death feigning was induced by a light stimulus that was applied to the metaventrite using forceps, and the duration and frequency were recorded to comprehensively evaluate the intensity of death feigning (Li et al, 2019;Li and Wen, 2022).…”

Section: Excision Testmentioning

confidence: 99%

See 1 more Smart Citation

Observations on neurophysiological pattern and behavioural traits as death-feigning mechanism in Eucryptorrhynchus scrobiculatus (Coleoptera: Curculionidae)

Li,

Wang,

Wen

2023

Journal of Experimental Biology

Self Cite

View full text Add to dashboard Cite

In adaptation to surrounding environmental stimuli, most insects exhibit defense behaviour (death feigning) to improve survival rates in the wild. However, the underlying mechanism of death feigning remains largely unknown. Here, we test the neurophysiological pattern and behavioural traits of death-feigning mechanism in the forestry pest, Eucryptorrhynchus scrobiculatus. Using neuroanatomy, LC-MS/MS target metabolomics detection technology and qRT-PCR, we investigated the effects of neurochemicals and metabolic pathways in experimental weevils. The excision and drug tests were conducted to verify the key regulatory body parts involved in regulating the central nervous system in death feigning. Our results reconstructed the death-feigning mechanism of E. scrobiculatus: when the effective stimuli point of arousal weevil received mechanical stimulation, the thoracoabdominal ganglion transmitted signals into the brain through the ventral nerve cord, and then the brain regulated DA and 5-HT metabolic pathways, reducing the expression of dopamine (dar2), octopamine (oar1, oab2) receptor genes, finally inducing death feigning. This study suggested the variation of neurotransmitters in the brain was an important indicator to evaluate the physiological response of death feigning and provided ecological and theoretical information for future investigation to reveal key behaviour and target genes for pest control.

show abstract

Section: Microstructure Anatomy Distribution and Number Of Sensilla I...mentioning

confidence: 99%

Section: Excision Testmentioning

confidence: 99%

Observations on neurophysiological pattern and behavioural traits as death-feigning mechanism in Eucryptorrhynchus scrobiculatus (Coleoptera: Curculionidae)

Li,

Wang,

Wen

2023

Journal of Experimental Biology

Self Cite

View full text Add to dashboard Cite

show abstract

“…In the recent studies, RNA‐seq analyses and DNA resequencing of genes expressed in long and short strains showed that many mutant variations exist in the clock genes Per , Cyc , dCLK , and Sgg in strains that feigned death longer, and were larger in Vri and Pdp in strains that did not feigning death (Tanaka et al, 2021; Uchiyama et al, 2019). In addition, changes in activity with regard to death‐feigning behavior have been found to have a phenotypic link in the domestic fowl (Rovee et al 1976) and some beetle species (Li & Wen, 2022; Miyatake, 2001). These studies, therefore, motivated us to survey rhythm‐related traits of strains with long and short durations of death feigning in Tribolium species.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, changes in activity with regard to death-feigning behavior have been found to have a phenotypic link in the domestic fowl (Rovee et al 1976) and some beetle species (Li & Wen, 2022;Miyatake, 2001). These studies, therefore, motivated us to survey rhythm-related traits of strains with long and short durations of death feigning in Tribolium species.…”

mentioning

confidence: 99%

Artificial selections for death‐feigning behavior in beetles show correlated responses in amplitude of circadian rhythms, but the period of the rhythm does not

et al. 2022

View full text Add to dashboard Cite

One of the most important survival strategies of organisms is to avoid predators. Studying one of such strategies, namely, death‐feigning behavior, has recently become more common. The success or failure of this antipredator strategy will be affected by the circadian rhythms of both prey and predator because death feigning sometimes has a diurnal rhythm. However, few studies have analyzed the effects of differences in circadian rhythms on predator‐avoidance behavior at the genetic level. Recently, the relationship between genes relating to circadian rhythm and death‐feigning behavior, an antipredator behavior, has been established at the molecular level. Therefore, in this study, we compared three circadian rhythm‐related traits, the free‐running period of rhythms, amplitude of circadian rhythms, and total activity of strains of three Tribolium species that were artificially selected for the death‐feigning duration: short (S‐strains) and long (L‐strains) durations. As a result, the amplitude of circadian rhythms and total activity were significantly different between S‐ and L‐strains, but there was no difference in the free‐running periods of the rhythm between the strains in T. castaneum, T. confusum, and T. freemani. Although the relationship between death‐feigning behavior and activity has been reported for all three species, a genetic relationship between the duration of death feigning and the amplitude of circadian rhythms has been newly found in the present study. It is important to investigate the relationship between antipredator strategies and circadian rhythms at the molecular level in the future.

show abstract

“…The tree‐of‐heaven trunk weevil (TTW), Eucryptorrhynchus brandti (Harold) and the tree‐of‐heaven root weevil (TRW), E . scrobiculatus (Motschulsky), are the only two wood‐boring species of Eucryptorrhynchus in China (Liu, 2016 ). The two species both only feed on the tree‐of‐heaven, Ailanthus altissima (Mill.)…”

Section: Introductionmentioning

confidence: 99%

Population differentiation and intraspecific genetic admixture in twoEucryptorrhynchusweevils (Coleoptera: Curculionidae) across northern China

Zhang

Song

Cao

et al. 2022

Ecology and Evolution

View full text Add to dashboard Cite

Increasing damage of pests in agriculture and forestry can arise both as a consequence of changes in local species and through the introduction of alien species. In this study, we used population genetics approaches to examine population processes of two pests of the tree‐of‐heaven trunk weevil (TTW), Eucryptorrhynchus brandti (Harold) and the tree‐of‐heaven root weevil (TRW), E . scrobiculatus (Motschulsky) on the tree‐of‐heaven across their native range of China. We analyzed the population genetics of the two weevils based on ten highly polymorphic microsatellite markers. Population genetic diversity analysis showed strong population differentiation among populations of each species, with F ST ranges from 0.0197 to 0.6650 and from −0.0724 to 0.6845, respectively. Populations from the same geographic areas can be divided into different genetic clusters, and the same genetic cluster contained populations from different geographic populations, pointing to dispersal of the weevils possibly being human‐mediated. Redundancy analysis showed that the independent effects of environment and geography could account for 93.94% and 29.70% of the explained genetic variance in TTW, and 41.90% and 55.73% of the explained genetic variance in TRW, respectively, indicating possible impacts of local climates on population genetic differentiation. Our study helps to uncover population genetic processes of these local pest species with relevance to control methods.

show abstract

Factors influencing the duration of death feigning in Eucryptorrhynchus scrobiculatus and E. brandti (Coleoptera: Curculionidae)

Cited by 6 publications

References 32 publications

Observations on neurophysiological pattern and behavioural traits as death-feigning mechanism in Eucryptorrhynchus scrobiculatus (Coleoptera: Curculionidae)

Observations on neurophysiological pattern and behavioural traits as death-feigning mechanism in Eucryptorrhynchus scrobiculatus (Coleoptera: Curculionidae)

Artificial selections for death‐feigning behavior in beetles show correlated responses in amplitude of circadian rhythms, but the period of the rhythm does not

Population differentiation and intraspecific genetic admixture in twoEucryptorrhynchusweevils (Coleoptera: Curculionidae) across northern China

Contact Info

Product

Resources

About