1
|
Wei L, Yang MF, Huang N, Ou HD, Wang XQ, Huang Y, Yu XF. Effects of cold storage after cold acclimation on the fitness of Habrobracon hebetor (Hymenoptera: Braconidae). JOURNAL OF ECONOMIC ENTOMOLOGY 2023; 116:1496-1504. [PMID: 37476852 DOI: 10.1093/jee/toad134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 05/20/2023] [Accepted: 06/29/2023] [Indexed: 07/22/2023]
Abstract
Habrobracon hebetor (Say) (Hymenoptera: Braconidae) is a cosmopolitan, idiobiont, and gregarious ectoparasitoid, which can parasitize the larvae of several pyralid and noctuid moths. However, adult parasitoids require cold storage to ensure that adequate individuals are available when a pest outbreak occurs. To understand the effects of cold storage after acclimation on offspring fitness of H. hebetor, the development, fecundity, population parameters, and paralysis rate of the F1 generation were evaluated using an age-stage, two-sex life table. Four pairing treatments were used in this study, with refrigerated males and females (ReF×ReM), unrefrigerated females and refrigerated males (UnF×ReM), refrigerated females and unrefrigerated males (ReF×UnM), and unrefrigerated females and males (UnF×UnM, control). Cold storage after acclimation had no significant effect on the fecundity or oviposition period of F0-generation H. hebetor. Moreover, the survival rate (Sa = 61.43%), proportion of females (Nf/N = 0.41), intrinsic rate of increase (r = 0.3450), finite rate of increase (λ = 1.4121), net reproduction rate (R0 = 149.47), and net paralysis rate (C0 = 74.52) of ReF×UnM and UnF×UnM (Sa = 50.00%, Nf/N = 0.34, r = 0.3297, λ = 1.3881, R0 = 155.69, C0 = 62.90, respectively) treatments were significantly higher than those of the ReF×ReM treatment (Sa = 45%, Nf/N = 0.16, r = 0.2277, λ = 1.2558, R0 = 68.81, C0 = 31.61, respectively) (except for the Sa of UnF×UnM treatment), and there was no significant difference between the 2 treatments. Overall, it is advisable to avoid simultaneous cold storage of female and male parasitoids or to add unrefrigerated males appropriately when using cold-stored parasitoids to control pests.
Collapse
Affiliation(s)
- Lan Wei
- Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Institute of Entomology of Guizhou University, Guiyang 550025, China
| | - Mao-Fa Yang
- Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Institute of Entomology of Guizhou University, Guiyang 550025, China
- College of Tobacco Science of Guizhou University, Guiyang 550025, China
| | - Ning Huang
- Guizhou Tobacco Company, Guiyang Branch Company, Guiyang 550002, China
| | - Hou-Ding Ou
- Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Institute of Entomology of Guizhou University, Guiyang 550025, China
| | - Xiu-Qin Wang
- Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Institute of Entomology of Guizhou University, Guiyang 550025, China
| | - Yao Huang
- Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Institute of Entomology of Guizhou University, Guiyang 550025, China
| | - Xiao-Fei Yu
- College of Tobacco Science of Guizhou University, Guiyang 550025, China
| |
Collapse
|
2
|
Augustinus BA, Blum M, Citterio S, Gentili R, Helman D, Nestel D, Schaffner U, Müller-Schärer H, Lensky IM. Ground-truthing predictions of a demographic model driven by land surface temperatures with a weed biocontrol cage experiment. Ecol Modell 2022. [DOI: 10.1016/j.ecolmodel.2022.109897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
3
|
Augustinus B, Sun Y, Beuchat C, Schaffner U, Müller-Schärer H. Predicting impact of a biocontrol agent: integrating distribution modeling with climate-dependent vital rates. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2020; 30:e02003. [PMID: 31519029 DOI: 10.1002/eap.2003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 06/28/2019] [Accepted: 07/30/2019] [Indexed: 06/10/2023]
Abstract
Species distribution models can predict the suitable climatic range of a potential biological control agent (BCA), but they provide little information on the BCA's potential impact. To predict high population buildup, a prerequisite of biocontrol impact, studies are needed that assess the effect of environmental factors on vital rates of a BCA across the environmental gradient of the BCA's suitable habitats, especially for the region where the BCA is considered for field release. We extended a published species distribution model with climate-dependent vital rates of Ophraella communa, a recently and accidentally introduced potential BCA of common ragweed, Ambrosia artemisiifolia in Europe. In field and laboratory experiments, we collected data on climate-dependent parameters assumed to be the most relevant for the population buildup of O. communa, i.e., temperature driving the number of generations per year and relative humidity (RH) determining egg hatching success. We found that O. communa concluded one generation in 334 cumulative degree days, and that egg hatching success strongly decreased from > 80% to < 20% when RH drops from 55% to 45% during the day. We used these values to spatially explicitly project population densities across the European range suitable for both A. artemisiifolia and the beetle and found that the present distribution of the beetle in Europe is within the range with the highest projected population growth. The highest population density of O. communa was predicted for northern Italy and parts of western Russia and western Georgia. Field observations of high impact on A. artemisiifolia with records of 80% aerial pollen reduction in the Milano area since the establishment of O. communa are in line with these predictions. The relative importance of temperature and RH on the population density of O. communa varies considerably across its suitable range in Europe. We propose that the combined statistical and mechanistic approach outlined in this paper helps to more accurately predict the potential impact of a weed BCA than a species distribution model alone. Identifying the factors limiting the population buildup of a BCA across the suitable range allows implementation of more targeted release and management strategies to optimize biocontrol efficacy.
Collapse
Affiliation(s)
- Benno Augustinus
- CABI, Delémont, 2800, Switzerland
- Department of Biology, University of Fribourg, Fribourg, 1700, Switzerland
| | - Yan Sun
- Department of Biology, University of Fribourg, Fribourg, 1700, Switzerland
| | - Carine Beuchat
- Department of Biology, University of Fribourg, Fribourg, 1700, Switzerland
| | | | | |
Collapse
|
4
|
Iannella M, De Simone W, D'Alessandro P, Console G, Biondi M. Investigating the Current and Future Co-Occurrence of Ambrosia artemisiifolia and Ophraella communa in Europe through Ecological Modelling and Remote Sensing Data Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16183416. [PMID: 31540033 PMCID: PMC6766007 DOI: 10.3390/ijerph16183416] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 09/09/2019] [Accepted: 09/11/2019] [Indexed: 11/18/2022]
Abstract
The common ragweed Ambrosia artemisiifolia has spread throughout Europe since the 1800s, infesting croplands and causing severe allergic reactions. Recently, the ragweed leaf beetle Ophraella communa was found in Italy and Switzerland; considering that it feeds primarily on A. artemisiifolia in its invaded ranges, some projects started biological control of this invasive plant through the adventive beetle. In this context of a ‘double’ invasion, we assessed the influence of climate change on the spread of these alien species through ecological niche modelling. Considering that A. artemisiifolia mainly lives in agricultural and urbanized areas, we refined the models using satellite remote-sensing data; we also assessed the co-occurrence of the two species in these patches. A. artemisiifolia is predicted to expand more than O. communa in the future, with the medium and high classes of suitability of the former increasing more than the latter, resulting in lower efficacy for O. communa to potentially control A. artemisiifolia in agricultural and urbanized patches. Although a future assessment was performed through the 2018 land-cover data, the predictions we propose are intended to be a starting point for future assessments, considering that the possibility of a shrinkage of target patches is unlikely to occur.
Collapse
Affiliation(s)
- Mattia Iannella
- Department of Life, Health & Environmental Sciences, University of L'Aquila, Via Vetoio Coppito, 67100 L'Aquila, Italy.
| | - Walter De Simone
- Department of Life, Health & Environmental Sciences, University of L'Aquila, Via Vetoio Coppito, 67100 L'Aquila, Italy.
| | - Paola D'Alessandro
- Department of Life, Health & Environmental Sciences, University of L'Aquila, Via Vetoio Coppito, 67100 L'Aquila, Italy.
| | - Giulia Console
- Department of Life, Health & Environmental Sciences, University of L'Aquila, Via Vetoio Coppito, 67100 L'Aquila, Italy.
| | - Maurizio Biondi
- Department of Life, Health & Environmental Sciences, University of L'Aquila, Via Vetoio Coppito, 67100 L'Aquila, Italy.
| |
Collapse
|
5
|
So CKJ, Schwanz LE. Thermal plasticity due to parental and early‐life environments in the jacky dragon (
Amphibolurus muricatus
). JOURNAL OF EXPERIMENTAL ZOOLOGY PART 2018; 329:308-316. [DOI: 10.1002/jez.2197] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 05/11/2018] [Accepted: 05/31/2018] [Indexed: 01/04/2023]
Affiliation(s)
- C. K. Janelle So
- Evolution & Ecology Research Centre School of Biological, Earth and Environmental Sciences UNSW Sydney Syndey Australia
| | - Lisa E. Schwanz
- Evolution & Ecology Research Centre School of Biological, Earth and Environmental Sciences UNSW Sydney Syndey Australia
| |
Collapse
|
6
|
Nyamukondiwa C, Chidawanyika F, Machekano H, Mutamiswa R, Sands B, Mgidiswa N, Wall R. Climate variability differentially impacts thermal fitness traits in three coprophagic beetle species. PLoS One 2018; 13:e0198610. [PMID: 29874290 PMCID: PMC5991409 DOI: 10.1371/journal.pone.0198610] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 05/22/2018] [Indexed: 01/10/2023] Open
Abstract
While the impacts of extreme and rising mean temperatures are well documented, increased thermal variability associated with climate change may also threaten ectotherm fitness and survival, but remains poorly explored. Using three wild collected coprophagic species Copris elphenor, Metacatharsius opacus and Scarabaeus zambezianus, we explored the effects of thermal amplitude around the mean on thermal tolerance. Using standardized protocols, we measured traits of high- (critical thermal maxima [CTmax] and heat knockdown time [HKDT]) and -low temperature tolerance (critical thermal minima [CTmin], chill coma recovery time [CCRT] and supercooling points [SCPs]) following variable temperature pulses (δ0, δ3, δ6 and δ9°C) around the mean (27°C). Our results show that increased temperature variability may offset basal and plastic responses to temperature and differs across species and metrics tested. Furthermore, we also show differential effects of body mass, body water content (BWC) and body lipid content (BLC) on traits of thermal tolerance. For example, body mass significantly influenced C. elphenor and S. zambezianus CTmax and S. zambezianus HKDT but not CTmin and CCRT. BWC significantly affected M. opacus and C. elphenor CTmax and in only M. opacus HKDT, CTmin and CCRT. Similarly, BLC only had a significant effect for M opacus CTmin. These results suggest differential and species dependent effects of climate variability of thermal fitness traits. It is therefore likely that the ecological services provided by these species may be constrained in the face of climate change. This implies that, to develop more realistic predictions for the effects of climate change on insect biodiversity and ecosystem function, thermal variability is a significant determinant.
Collapse
Affiliation(s)
- Casper Nyamukondiwa
- Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology (BIUST), Palapye, Botswana
- * E-mail:
| | - Frank Chidawanyika
- Agricultural Research Council, Plant Protection Research Institute, Weeds Division, Hilton, South Africa
- School of Lifesciences, University of KwaZulu-Natal, Pietermaritzburg, South Africa
| | - Honest Machekano
- Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology (BIUST), Palapye, Botswana
| | - Reyard Mutamiswa
- Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology (BIUST), Palapye, Botswana
| | - Bryony Sands
- School of Biological Sciences, University of Bristol, United Kingdom
| | - Neludo Mgidiswa
- Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology (BIUST), Palapye, Botswana
| | - Richard Wall
- School of Biological Sciences, University of Bristol, United Kingdom
| |
Collapse
|
7
|
Su H, Zou J, Zhou Q, Yu Q, Yang Y, Yang Y. Better cold tolerance of Bt-resistant Spodoptera exigua strain and the corresponding cold-tolerant mechanism. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2017; 140:51-57. [PMID: 28755694 DOI: 10.1016/j.pestbp.2017.06.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 05/31/2017] [Accepted: 06/02/2017] [Indexed: 06/07/2023]
Abstract
Spodoptera exigua is a secondary target pest of Bt cotton commercialized in China. With the continuous adoption of Bt cotton, populations of S. exigua have gradually increased. However, the cold tolerance ability of Bt-resistant S. exigua and the effect of continuous Bt diet on anti-cold materials are unknown. In our study, it was found that Bt-resistant S. exigua (Bt10) developed better with shorter larval and pupal duration and higher pupation rate compared to CK at the suboptimal low temperature. The supercooling points and freezing points of the Bt-resistant S. exigua strain were determined, and body water content and anti-cold materials such as total sugar, trehalose and glycogen, glycerol and fat were examined to explore the effect of Bt toxin on overwintering and on population increase. The results showed that the supercooling point and the freezing point of the Bt-resistant S. exigua pupae were both significantly lower than that of the Bt-susceptible strain. No difference was found in the body water content of pupae and adults between the two strains. Total sugar content of the Bt-resistant strain at both the pupal and adult stages was higher than that of the susceptible strain at the corresponding stages, and glycogen content of the Bt-resistant strain at the larval stage was higher than that of the susceptible larval S. exigua. Fat content of the Bt-resistant larvae, pupae and adults was for each higher than that of the susceptible strain, but the difference was not significant except for that of the 3rd instar larvae. Glycerol content of the Bt-resistant strain at larval, pupal and adult stages was for each higher than that of the corresponding life stages of the susceptible strain. It can be seen that more glycerol was accumulated in Bt-resistant S. exigua. The results indicate that Bt-resistant S. exigua has better cold tolerance. The contents of the anti-freeze substances of progeny, especially glycerol, were increased after previous generations were continuously fed on Bt protein, which means that the Bt-resistant secondary target pests could more easily overcome the overwinter season and become a source of crop damage the following year.
Collapse
Affiliation(s)
- Honghua Su
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, Jiangsu, China
| | - Jincheng Zou
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, Jiangsu, China
| | - Qiuxia Zhou
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, Jiangsu, China
| | - Qi Yu
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, Jiangsu, China
| | - Yong Yang
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, Jiangsu, China
| | - Yizhong Yang
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, Jiangsu, China.
| |
Collapse
|
8
|
Sun Y, Brönnimann O, Roderick GK, Poltavsky A, Lommen STE, Müller‐Schärer H. Climatic suitability ranking of biological control candidates: a biogeographic approach for ragweed management in Europe. Ecosphere 2017. [DOI: 10.1002/ecs2.1731] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Affiliation(s)
- Yan Sun
- Department of Environmental Science, Policy & Management University of California Berkeley California 94720 USA
| | - Olivier Brönnimann
- Department of Ecology & Evolution University of Lausanne Lausanne 1015 Switzerland
| | - George K. Roderick
- Department of Environmental Science, Policy & Management University of California Berkeley California 94720 USA
| | - Alexander Poltavsky
- Botanical Garden of the Southern Federal University Rostov‐on‐Don 344041 Russia
| | - Suzanne T. E. Lommen
- Department of Biology/Ecology & Evolution University of Fribourg Fribourg 1700 Switzerland
| | - Heinz Müller‐Schärer
- Department of Biology/Ecology & Evolution University of Fribourg Fribourg 1700 Switzerland
| |
Collapse
|
9
|
Schwanz LE. Parental thermal environment alters offspring sex ratio and fitness in an oviparous lizard. ACTA ACUST UNITED AC 2016; 219:2349-57. [PMID: 27229475 DOI: 10.1242/jeb.139972] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Accepted: 05/23/2016] [Indexed: 01/18/2023]
Abstract
The environment experienced by parents can impact the phenotype of their offspring (parental effects), a critical component of organismal ecology and evolution in variable or changing environments. Although temperature is a central feature of the environment for ectotherms, its role in parental effects has been little explored until recently. Here, parental basking opportunity was manipulated in an oviparous lizard with temperature-dependent sex determination, the jacky dragon (Amphibolurus muricatus). Eggs were incubated at a temperature that typically produces a 50:50 sex ratio, and hatchlings were reared in a standard thermal environment. Offspring of parents in short bask conditions appeared to have better fitness outcomes in captive conditions than those of parents in long bask conditions - they had greater growth and survival as a function of their mass. In addition, the sex of offspring (male or female) depended on the interaction between parental treatment and egg mass, and treatment impacted whether sons or daughters grew larger in their first season. The interactive effects of treatment on offspring sex and growth are consistent with adaptive explanations for the existence of temperature-dependent sex determination in this species. Moreover, the greater performance recorded in short bask offspring may represent an anticipatory parental effect to aid offspring in predicted conditions of restricted thermal opportunity. Together, these responses constitute a crucial component of the population response to spatial or temporal variation in temperature.
Collapse
Affiliation(s)
- Lisa E Schwanz
- Research School of Biology, The Australian National University, Bruce, ACT 2601, Australia
| |
Collapse
|
10
|
Sgrò CM, Terblanche JS, Hoffmann AA. What Can Plasticity Contribute to Insect Responses to Climate Change? ANNUAL REVIEW OF ENTOMOLOGY 2015; 61:433-51. [PMID: 26667379 DOI: 10.1146/annurev-ento-010715-023859] [Citation(s) in RCA: 250] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Plastic responses figure prominently in discussions on insect adaptation to climate change. Here we review the different types of plastic responses and whether they contribute much to adaptation. Under climate change, plastic responses involving diapause are often critical for population persistence, but key diapause responses under dry and hot conditions remain poorly understood. Climate variability can impose large fitness costs on insects showing diapause and other life cycle responses, threatening population persistence. In response to stressful climatic conditions, insects also undergo ontogenetic changes including hardening and acclimation. Environmental conditions experienced across developmental stages or by prior generations can influence hardening and acclimation, although evidence for the latter remains weak. Costs and constraints influence patterns of plasticity across insect clades, but they are poorly understood within field contexts. Plastic responses and their evolution should be considered when predicting vulnerability to climate change-but meaningful empirical data lag behind theory.
Collapse
Affiliation(s)
- Carla M Sgrò
- School of Biological Sciences, Monash University, Melbourne, Victoria 3800, Australia;
| | - John S Terblanche
- Department of Conservation Ecology and Entomology, Stellenbosch University, Matieland 7602, South Africa;
| | - Ary A Hoffmann
- School of BioSciences, Bio21 Institute, University of Melbourne, Melbourne 3010, Australia;
| |
Collapse
|
11
|
Abstract
For many animals, survival of severe environmental stress (e.g. to extremes of heat or cold, drought, oxygen limitation, food deprivation) is aided by entry into a hypometabolic state. Strong depression of metabolic rate, often to only 1–20% of normal resting rate, is a core survival strategy of multiple forms of hypometabolism across the animal kingdom, including hibernation, anaerobiosis, aestivation and freeze tolerance. Global biochemical controls are needed to suppress and reprioritize energy use; one such well-studied control is reversible protein phosphorylation. Recently, we turned our attention to the idea that mechanisms previously associated mainly with epigenetic regulation can also contribute to reversible suppression of gene expression in hypometabolic states. Indeed, situations as diverse as mammalian hibernation and turtle anoxia tolerance show coordinated changes in histone post-translational modifications (acetylation, phosphorylation) and activities of histone deacetylases, consistent with their use as mechanisms for suppressing gene expression during hypometabolism. Other potential mechanisms of gene silencing in hypometabolic states include altered expression of miRNAs that can provide post-transcriptional suppression of mRNA translation and the formation of ribonuclear protein bodies in the nucleus and cytoplasm to allow storage of mRNA transcripts until animals rouse themselves again. Furthermore, mechanisms first identified in epigenetic regulation (e.g. protein acetylation) are now proving to apply to many central metabolic enzymes (e.g. lactate dehydrogenase), suggesting a new layer of regulatory control that can contribute to coordinating the depression of metabolic rate.
Collapse
Affiliation(s)
- Kenneth B. Storey
- Institute of Biochemistry and Departments of Biology and Chemistry, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada
| |
Collapse
|
12
|
Ma FZ, Lü ZC, Wang R, Wan FH. Heritability and evolutionary potential in thermal tolerance traits in the invasive Mediterranean cryptic species of Bemisia tabaci (Hemiptera: Aleyrodidae). PLoS One 2014; 9:e103279. [PMID: 25054554 PMCID: PMC4108406 DOI: 10.1371/journal.pone.0103279] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Accepted: 06/30/2014] [Indexed: 11/19/2022] Open
Abstract
With advancing global climate change, the analysis of thermal tolerance and evolutionary potential is important in explaining the ecological adaptation and changes in the distribution of invasive species. To reveal the variation of heat resistance and evolutionary potential in the invasive Mediterranean cryptic species of Bemisia tabaci, we selected two Chinese populations-one from Harbin, N China, and one from Turpan, S China-that experience substantial heat and cold stress and conducted knockdown tests under static high- and low-temperature conditions. ANOVAs indicated significant effects of populations and sex on heat knockdown time and chill coma recovery time. The narrow-sense heritability (h2) estimates of heat tolerance based on a parental half-sibling breeding design ranged from 0.47 ± 0.03 to 0.51 ± 0.06, and the estimates of cold tolerance varied from 0.33 ± 0.07 to 0.36 ± 0.06. Additive genetic variances were significantly different from zero for both heat and cold tolerance. These results suggest that invasive B. tabaci Mediterranean cryptic species possesses a strong ability to respond to thermal selection and develops rapid resistance to climate change.
Collapse
Affiliation(s)
- Fang-Zhou Ma
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Zhi-Chuang Lü
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Ren Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Fang-Hao Wan
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
- Center for Management of Invasive Alien Species, Ministry of Agriculture, Beijing, P. R. China
- * E-mail:
| |
Collapse
|