Geographic variation in winter hardiness of a common agricultural pest, Leptinotarsa decemlineata, the Colorado potato beetle

Izzo, Victor M.; Hawthorne, David J.; Chen, Yolanda H.

doi:10.1007/s10682-013-9681-8

Cited by 26 publications

(25 citation statements)

References 54 publications

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“…In Scandinavia, for example, diapause in the model is triggered by a day length threshold of 15 h or mean daily temperature less than 12 • C for longer than one week, and the critical day length for diapause increases with latitude (68). Early entry into diapause is important for survival at the northern range limit (115) but is a recent adaptation apparently absent from beetles in the native range (64). Although beetles from different regions do not differ in the temperature at which they freeze, beetles from the native range (Mexico) climbed out of the soil when buried at the start of winter, and subsequently perished, whereas those from further north dug deeper and survived (64).…”

Section: Climate Change and The Colorado Potato Beetlementioning

confidence: 99%

“…Early entry into diapause is important for survival at the northern range limit (115) but is a recent adaptation apparently absent from beetles in the native range (64). Although beetles from different regions do not differ in the temperature at which they freeze, beetles from the native range (Mexico) climbed out of the soil when buried at the start of winter, and subsequently perished, whereas those from further north dug deeper and survived (64). Behavioral differentiation has also been found in Eurasian populations.…”

Section: Climate Change and The Colorado Potato Beetlementioning

confidence: 99%

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Range-Expanding Pests and Pathogens in a Warming World

Bebber

2015

Annu. Rev. Phytopathol.

238

177

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Crop pests and pathogens (CPPs) present a growing threat to food security and ecosystem management. The interactions between plants and their natural enemies are influenced by environmental conditions and thus global warming and climate change could affect CPP ranges and impact. Observations of changing CPP distributions over the twentieth century suggest that growing agricultural production and trade have been most important in disseminating CPPs, but there is some evidence for a latitudinal bias in range shifts that indicates a global warming signal. Species distribution models using climatic variables as drivers suggest that ranges will shift latitudinally in the future. The rapid spread of the Colorado potato beetle across Eurasia illustrates the importance of evolutionary adaptation, host distribution, and migration patterns in affecting the predictions of climate-based species distribution models. Understanding species range shifts in the framework of ecological niche theory may help to direct future research needs.

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Section: Climate Change and The Colorado Potato Beetlementioning

confidence: 99%

Section: Climate Change and The Colorado Potato Beetlementioning

confidence: 99%

Range-Expanding Pests and Pathogens in a Warming World

Bebber

2015

Annu. Rev. Phytopathol.

238

177

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“…For instance, overwintering mortality was twice as high for beetles resistant to Bacillus thuringensis Berliner as for susceptible beetles (Alyokhin & Ferro 1999). Izzo et al (2013) found that the behaviour and overwintering success of ancestral beetle populations and derived (post-expansion) beetles are different. High-latitude populations are mostly more cold tolerant than low-latitude populations (Lyytonen et al 2012).…”

Section: Discussionmentioning

confidence: 99%

Phenology and overwintering of the Colorado potato beetleLeptinotarsa decemlineataSay in 2008–2015 in Estonia

Hiiesaar

Jõgar

Williams

et al. 2016

Acta Agriculturae Scandinavica, Section B — Soil & Plant Sc

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Before its establishment in Estonia at the beginning of the twenty-first century, the Colorado potato beetle Leptinotarsa decemlineata Say was a notifiable quarantine pest for many years. In high-latitude environments it encounters strong evolutionary pressure to adapt to low temperatures due to high overwintering mortality and periodic influx of new individuals from more southern populations. Our study focused on gathering evidence for such a range shift leading to the formation of a permanent local population. The phenology and overwintering success of beetles was investigated from 2008 to 2015. Depending on weather conditions in the different years, the overwintered beetles emerged from the soil from the beginning of May to mid-June. Over 700 degree days accumulated in 2010, 2011, 2013 and 2014 exceeding the limit needed for development of two generations. However, food supply and temperature distribution in the growing period enabled development of the second complete generation only in 2010 and 2013. Survival of overwintering beetles in field conditions varied between 18% and 47% in the different years. Winter mortality was not associated with low air temperature in any year as snow cover provided the necessary protection and winter soil temperatures at the depth of 30 cm remained at around 0°C for the duration of the whole observation period, with only some records as low as −3.5°C. The survival of overwintering beetles is more likely defined by factors other than low temperature. As a result of periodic invasions of beetles with naturally lower cold resistance originating from southern regions, the structure of the overwintering population in Nordic temperate conditions is not homogeneous. Moreover, this may also be derived from cultural practices, as commercial producers regularly apply agrochemicals while organic growers avoid them. ARTICLE HISTORY

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“…On the other hand, the Colorado potato beetle, Leptinotarsa decemlineata (Coleoptera: Chrysomelidae) is thought to originate from the highlands of Mexico (Tower, 1906;Casagrande, 1987;Jacques, 1988). The beetle has evolved greater cold tolerance and overwintering strategies allowing it to expand northwards into temperate regions (Izzo et al, 2013;Lehmann et al, 2014). In addition, the beetle has expanded its host range from wild Solanum hosts to include several crop plants such as potato, eggplant, and tomato ( Jacques, 1988;Lu et al, 2001;Izzo et al, 2014).…”

Section: Human-mediated Migration Of Invasive Pestsmentioning

confidence: 99%

“…Human-aided transport Some invasive insect herbivores appear to readily adapt to novel environmental conditions (Izzo et al, 2013;Lehmann et al, 2014;Izzo et al, 2014 For native herbivores that have evolved to become pests via domestication, more examination is to needed to disentangle how domestication and cultivation influence species interactions (Table 1). Researchers are urged to develop experimental designs that account both for domestication (genetic) and cultivation (environment) factors.…”

Section: Geography and Pest Controlmentioning

confidence: 99%

Crop domestication, global human-mediated migration, and the unresolved role of geography in pest control

Chen

2016

Elementa: Science of the Anthropocene

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Ecological pest management seeks to improve pest control through the manipulation of ecological processes that promote natural enemies and suppress pests. These approaches can involve cultural practices such as reduced tillage, increased use of non-crop plants that provide food and shelter for natural enemies, and intercropping to enhance the abundance and diversity of natural enemies. A major assumption of ecological pest management is that these activities can be equally effective for all insect herbivores. Here, I propose that these strategies may only be effective for a subset of pests and geographic regions because most insect pests have complex evolutionary histories that make them difficult to manage. I discuss how crop domestication and human-mediated migration are major evolutionary events that shape the geography of interactions between plants, herbivores, and natural enemies. Insect herbivores can evolve to be pests through three major modes: 1) herbivores associated with the crop wild ancestor may shift onto the domesticated crop, 2) herbivores may host-shift from native host plants onto an introduced crop, or 3) human-mediated migration can introduce insect pests into new cropping regions. The resulting geographic structure can influence the success of pest management by altering ecological factors such as: species distributions, patterns of biodiversity, community structure, and natural enemy attack rates. I discuss how the different modes of insect pest evolution structure a set of relevant questions and approaches for ecological pest management. By acknowledging how agricultural history and geography shape the ecology and evolution of insect pests, we may collectively develop a better capacity to identify where and how ecological pest management approaches can be most broadly effective.

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Geographic variation in winter hardiness of a common agricultural pest, Leptinotarsa decemlineata, the Colorado potato beetle

Cited by 26 publications

References 54 publications

Range-Expanding Pests and Pathogens in a Warming World

Range-Expanding Pests and Pathogens in a Warming World

Phenology and overwintering of the Colorado potato beetleLeptinotarsa decemlineataSay in 2008–2015 in Estonia

Crop domestication, global human-mediated migration, and the unresolved role of geography in pest control

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