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Low-temperature derived temporal change in the vertical distribution ofSesamia inferenslarvae in winter, with links to its latitudinal distribution

文献类型： 外文期刊

作者： Huang, Jianrong 1 ; Li, Guoping 1 ; Lei, Haixia 4 ; Fan, Chunbin 5 ; Tian, Caihong 1 ; Chen, Qi 6 ; Huang, Bo 1 ; Li, Hui 1 ;

作者机构： 1.Henan Acad Agr Sci, Henan Key Lab Crop Pest Control, MOAs Reg Key Lab Crop IPM Southern Part Northern, Zhengzhou, Peoples R China

2.Henan Acad Agr Sci, Inst Plant Protect, Zhengzhou, Peoples R China

3.Univ Exeter, Ctr Ecol & Conservat, Penryn, Cornwall, England

4.Xinyang Acad Agr Sci, Xinyang, Peoples R China

5.Tianjing Beidagang Wetland Conservat Ctr, Tianjin, Peoples R China

6.Luohe Acad Agr Sci, Luohe, Peoples R China

期刊名称：PLOS ONE （ 影响因子：3.24； 五年影响因子：3.788 ）

ISSN： 1932-6203

年卷期： 2020 年 15 卷 7 期

页码：

收录情况： SCI

摘要： To escape or alleviate low temperatures in winter, insects have evolved many behavioral and physiological strategies. The purple stem borer,Sesamia inferens(Walker) is currently reported to be expanding their northern distributions and causing damage to summer maize in Xinxiang, China. However, their method of coping with the lower temperature in the new northern breeding area in winter is largely unknown. This paper investigates the overwinter site ofS.inferens, and identifies the cold hardiness of larvae collected from a new breeding area in winter and explores a potential distribution based on low temperature threshold and on species distribution model MaxEnt. The results show that the overwintering location of theS.inferenspopulation is more likely to be underground with increasing latitude and the population gradually moved down the corn stalk and drilled completely underground in later winter (February) in the north. The cold hardiness test shows the species is a moderate freeze-tolerant one, and Supercooling Points (SCP), Freezing Points (FP) and the incidence of mortality during the middle of winter (January, SCP: -7.653, FP: -6.596) were significantly lower than early winter (October) or late winter (March). Distribution in the new expansion area was predicted and the survival probability area was below N 35 degrees for the Air Lower Lethal Temperature (ALLT(50)) and below N 40 degrees for the Underground Lower Lethal Temperature (ULLT50)(.)The suitable habitat areas forS.inferenswith MaxEnt were also below N 40 degrees. This study suggests the overwinter strategies ofS.inferenshave led to the colonization of up to a five degree more northerly overwintering latitude.

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