Metabolism and cold tolerance of <scp>C</scp>hinese white pine beetle <i><scp>D</scp>endroctonus armandi</i> (<scp>C</scp>oleoptera: <scp>C</scp>urculionidae: <scp>S</scp>colytinae) during the overwintering period

Wang, Juan; Gao, Guozhen; Zhang, Ranran; Dai, Lulu; Chen, Hui

doi:10.1111/afe.12176

Cited by 26 publications

(25 citation statements)

References 63 publications

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“…The spawning period begins in late April, and in July, the first generation of adults begins to fly out, and some larvae directly enter the wintering stage [47]. Larval mortality is strongly temperature dependent, with winter being the most critical time [48]. The survival rate of an insect population at low temperatures in winter is directly related to its reproductive success [49].…”

Section: Discussionmentioning

confidence: 99%

Factors Influencing the Geographical Distribution of Dendroctonus armandi (Coleoptera: Curculionidae: Scolytidae) in China

Ning

Dai

et al. 2019

Forests

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In order to prevent any further spread of Dendroctonus armandi (Coleoptera: Curculionidae: Scolytidae), it is important to clarify its geographic distribution in China. Species Distribution Models were used to identify the variables influencing the distribution of D. armandi in China, and to create maps of its distribution. D. armandi almost exclusively attacked Pinus armandi Franch (IP (frequency of its incidence) = 98.2%), and its distribution is focused on the Qinling Mountains and the Ta-pa Mountains. The current distribution of P. armandi does not limit the distribution of D. armandi, despite the host occurring in in northern and southwestern China. Temperature and precipitation limit the current distribution of this beetle. The mean temperature of coldest quarter (−5 °C) does not guarantee that D. armandi larvae can overwinter in northern China, and the precipitation of wettest quarter plays an important role in the dispersal and colonization of D. armandi adults in southwestern China. Therefore, the ecological niche of this beetle is relatively narrow when it comes to these environmental variables. The climatic conditions where this beetle inhabit are different from the prevalent climate in the Qinling Mountains and the Ta-pa Mountains. At the meso- and micro-scale levels, terrain variables create habitat selection preferences for D. armandi. D. armandi predominately colonizes trees on the southern slopes of valleys and canyons with elevations between 1300 m a.s.l and 2400 m a.s.l.

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Section: Discussionmentioning

confidence: 99%

Factors Influencing the Geographical Distribution of Dendroctonus armandi (Coleoptera: Curculionidae: Scolytidae) in China

Ning

Dai

et al. 2019

Forests

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“…Previous research on the Chinese white pine beetle has shown that adult females and males from different seasons have different tolerances to host plant terpenoids (Dai et al, 2015), and that overwintering larval survival is influenced by a number of physiological factors, including the size of energy store (Wang et al, 2017). In D. armandi, several genes of the three major classes of detoxifying enzymes play important roles in detoxification related to their specific behavior and development (Dai et al, 2015(Dai et al, , 2016.…”

Section: Introductionmentioning

confidence: 99%

Survival physiology and sex ratio of the Chinese white pine beetleDendroctonus armandi(Coleoptera: Scolytinae) during host colonization and overwintering

Dai

Zheng

Wang

et al. 2019

Bull. Entomol. Res.

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The Chinese white pine beetle Dendroctonus armandi (Coleoptera: Scolytinae) typically displays bivoltinism at altitudes below 1700 m in the Qinling Mountains, China. The periods of host colonization and larval overwintering are two important phases in the life cycle of bark beetles, as it is during these periods that they have to contend with host plant defences and periods of intense cold, respectively. Although during different seasons, the females and males of Chinese white pine beetles show varying tolerances to host plant terpenoids, the sex ratio and survival physiology condition of the two beetle generations are unknown. We investigated the sex ratio of individuals, and also examined the body mass, energy stores, and detoxication enzymes of males and females in each of the two generations in order to determine the overall population stability of each generation. We identified a female-biased sex ratio among adults in both generations. Furthermore, patterns of body mass, energy stores, and detoxication enzymes were found to differ between the two sexes and two seasons. Compared with the males, the females have a larger body mass and higher amounts of stored lipids, which are assumed to be adaptations designed to overcome host resistance and facilitate subsequent oviposition.

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“…The Chinese white pine beetle Dendroctonus armandi Tsai and Li (Coleoptera: Curculionidae: Scolytinae) is the most damaging forest insect in the Qinling Mountains, Shaanxi, China 7 , 8 . D. armandi as a leading serious forest pest invades the phloem of Pinus armandi Franch and causes high mortality of healthy P. armandi in natural forest ecosystems, reaching epidemic proportions 7 , 8 . Various aspects of D. armandi ’s biology and physiology have been studied because of its importance, such as its ecological niche 9 , life cycle 10 and symbiotic fungi 11 .…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Insect faces a great challenge in surviving at low temperatures in frigid and temperate zones 8 , 12 , 13 . Insect survival rate in overwintering stage is a major factor limiting their population and distribution 8 . Hence, the lowest temperature in winter is considered as an vital element on insects’ range expansion and outbreak frequency 8 , 14 – 16 .…”

Section: Introductionmentioning

confidence: 99%

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Community structure of gut bacteria of Dendroctonus armandi (Coleoptera: Curculionidae: Scolytinae) larvae during overwintering stage

Wang

Chen

Tang

2017

Sci Rep

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Survival rate at low temperature becomes a crucial strategy since temperature change often leads to fluctuations in the insect population. Microbes play important roles in the process of resisting low temperature. In this study, we analyzed gut bacterial communities from Chinese white pine beetle Dendroctonus armandi which remained overwintering process under natural conditions from October 2015 to January 2016, monthly, in the Qinling Mountains, Shaanxi, China using Illumina MiSeq sequencing. A total of 835,227 high-quality sequences and 48 singleton operational taxonomic units were obtained. Gut bacterial communities showed variation in relative abundance during the overwintering stage. As ambient temperature declined, Proteobacteria (mostly γ-proteobacteria) became the predominant phylum in the larvae guts, and followed with Actinobacteria and Firmicutes, respectively. In particular, there was no Deinococcus-Thermus in January 2016. Thermoleophilia appeared in November and December 2015, but not for October 2015 and January 2016, nor did δ-proteobacteria. By contrast, gut bacterial community compositions increased in relative abundance in November and December 2015. This study provided initial evidence that gut bacterial communities were associated with the larvae overwintering process at low temperature. Moreover, no complementary studies combining overwintering process of Coleoptera insect and high-throughput sequencing were carried out, paying particular attention to insect in cold season.

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Metabolism and cold tolerance of Chinese white pine beetle Dendroctonus armandi (Coleoptera: Curculionidae: Scolytinae) during the overwintering period

Cited by 26 publications

References 63 publications

Factors Influencing the Geographical Distribution of Dendroctonus armandi (Coleoptera: Curculionidae: Scolytidae) in China

Factors Influencing the Geographical Distribution of Dendroctonus armandi (Coleoptera: Curculionidae: Scolytidae) in China

Survival physiology and sex ratio of the Chinese white pine beetleDendroctonus armandi(Coleoptera: Scolytinae) during host colonization and overwintering

Community structure of gut bacteria of Dendroctonus armandi (Coleoptera: Curculionidae: Scolytinae) larvae during overwintering stage

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