Differences in the high-temperature tolerance of Aphis craccivora (Hemiptera: Aphididae) on cotton and soybean: implications for ecological niche switching among hosts

Zhaozhi, Lu, Likai, Feng, Guizhen, Gao, Ling-Ling, Gao, Han, Peng, Sharma, Shashi and Zalucki, Myron P. (2017) Differences in the high-temperature tolerance of Aphis craccivora (Hemiptera: Aphididae) on cotton and soybean: implications for ecological niche switching among hosts. Applied Entomology and Zoology, 52 1: 9-18. doi:10.1007/s13355-016-0446-z


Author Zhaozhi, Lu
Likai, Feng
Guizhen, Gao
Ling-Ling, Gao
Han, Peng
Sharma, Shashi
Zalucki, Myron P.
Title Differences in the high-temperature tolerance of Aphis craccivora (Hemiptera: Aphididae) on cotton and soybean: implications for ecological niche switching among hosts
Formatted title
Differences in the high-temperature tolerance of Aphis craccivora (Hemiptera: Aphididae) on cotton and soybean: implications for ecological niche switching among hosts
Journal name Applied Entomology and Zoology   Check publisher's open access policy
ISSN 1347-605X
0003-6862
Publication date 2017-02-01
Year available 2016
Sub-type Article (original research)
DOI 10.1007/s13355-016-0446-z
Open Access Status Not yet assessed
Volume 52
Issue 1
Start page 9
End page 18
Total pages 10
Place of publication Tokyo, Japan
Publisher Springer Japan KK
Language eng
Subject 1109 Insect Science
Abstract To forecast the effects of climate change and extreme temperature events on insect population dynamics, the high-temperature tolerance of insects must be taken into account. We compared the life-history characteristics of cowpea aphid (Aphis craccivora Koch) across different temperature regimes on two different host plants, soybean (a preferred host) and cotton (a non-preferred host). Most demographic parameters were superior for the aphid on soybean than on cotton. Temperatures affected aphid development more on cotton than on soybean. The intrinsic rate of increase, reproduction rate, number of progeny per adult, and longevity were significantly higher on soybean than on cotton for the same temperature regime. Temperatures that fluctuated to extreme levels caused a rapid decline in each of these parameters for aphids fed on cotton, but not for those fed on soybean. To our knowledge, this is the first report to note that the high-temperature tolerance of A. craccivora is host-specific (cotton vs. soybean). Our findings may partly explain the observed niche switching of the cowpea aphid (Aphis craccivora) from cotton to soybean at the beginning of summer when the temperature goes up in the Xinjiang cotton-growing zone (Northwest China). This host mediation of high-temperature tolerance in aphids should be taken into account when modeling population dynamics under the influence of global warming, host adaptation, and the risk analysis of alien pest invasions.
Formatted abstract
To forecast the effects of climate change and extreme temperature events on insect population dynamics, the high-temperature tolerance of insects must be taken into account. We compared the life-history characteristics of cowpea aphid (Aphis craccivora Koch) across different temperature regimes on two different host plants, soybean (a preferred host) and cotton (a non-preferred host). Most demographic parameters were superior for the aphid on soybean than on cotton. Temperatures affected aphid development more on cotton than on soybean. The intrinsic rate of increase, reproduction rate, number of progeny per adult, and longevity were significantly higher on soybean than on cotton for the same temperature regime. Temperatures that fluctuated to extreme levels caused a rapid decline in each of these parameters for aphids fed on cotton, but not for those fed on soybean. To our knowledge, this is the first report to note that the high-temperature tolerance of A. craccivora is host-specific (cotton vs. soybean). Our findings may partly explain the observed niche switching of the cowpea aphid (Aphis craccivora) from cotton to soybean at the beginning of summer when the temperature goes up in the Xinjiang cotton-growing zone (Northwest China). This host mediation of high-temperature tolerance in aphids should be taken into account when modeling population dynamics under the influence of global warming, host adaptation, and the risk analysis of alien pest invasions.
Keyword Global warming
Host adaptation
Host plant effects
Population declines
Seasonal dynamics
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID 31301673
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
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