Role of Visual and Olfactory Cues from Agricultural Hedgerows in the Orientation Behavior of Multicolored Asian Lady Beetle (Coleoptera: Coccinellidae)

Bahlai, Christie A.; Welsman, J. A.; MacLeod, Emily C.; Schaafsma, A. W.; Hallett, Rebecca H.; Sears, M. K.

doi:10.1093/ee/37.4.973

Cited by 30 publications

(23 citation statements)

References 25 publications

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“…Bahlai et al. () found that soybean aphid density is positively correlated with the density of buckthorn plants in the vicinity of soybean fields in Canada. Yet, a more recent study found SBA relationships with forest could not be attributed to buckthorn presence or abundance (Mitchell et al.…”

Section: Discussionmentioning

confidence: 99%

“…The presence of nonsoybean plants in fields and along field margins, such as in‐season ground cover and edge plantings, could also influence aphid populations directly, by providing habitat like buckthorn, or indirectly, by augmenting resources for natural enemies (Bahlai et al. , Schmidt et al. ).…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies suggest that SBA abundance is positively associated with increasing noncrop habitats of agricultural landscapes (Bahlai et al. , Gardiner et al. , b, , Woltz et al.…”

Section: Introductionmentioning

confidence: 95%

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Explicit modeling of abiotic and landscape factors reveals precipitation and forests associated with aphid abundance

Whitney

Meehan

Kucharik

et al. 2016

Ecological Applications

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Increases in natural or noncrop habitat surrounding agricultural fields have been shown to be correlated with declines in insect crop pests. However, these patterns are highly variable across studies suggesting other important factors, such as abiotic drivers, which are rarely included in landscape models, may also contribute to variability in insect population abundance. The objective of this study was to explicitly account for the contribution of temperature and precipitation, in addition to landscape composition, on the abundance of a widespread insect crop pest, the soybean aphid (Aphis glycines Matsumura), in Wisconsin soybean fields. We hypothesized that higher soybean aphid abundance would be associated with higher heat accumulation (e.g., growing degree days) and increasing noncrop habitat in the surrounding landscape, due to the presence of the overwintering primary hosts of soybean aphid. To evaluate these hypotheses, we used an ecoinformatics approach that relied on a large dataset collected across Wisconsin over a 9-year period (2003-2011), for an average of 235 sites per year (n = 2,110 fields total). We determined surrounding landscape composition (1.5-km radius) using publicly available satellite-derived land cover imagery and interpolated daily temperature and precipitation information from the National Weather Service COOP weather station network. We constructed linear mixed models for soybean aphid abundance based on abiotic and landscape explanatory variables and applied model averaging for prediction using an information theoretic framework. Over this broad spatial and temporal extent in Wisconsin, we found that variation in growing season precipitation was positively related to soybean aphid abundance, while higher precipitation during the nongrowing season had a negative effect on aphid populations. Additionally, we found that aphid populations were higher in areas with proportionally more forest but were lower in areas where minor crops, such as small grains, were more prevalent. Thus, our findings support our hypothesis that including abiotic drivers increases our understanding of crop pest abundance and distribution. Moreover, by explicitly modeling abiotic factors, we may be able to explore how variable climate in tandem with land cover patterns may affect current and future insect populations, with potentially critical implications for crop yields and agricultural food webs.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Explicit modeling of abiotic and landscape factors reveals precipitation and forests associated with aphid abundance

Whitney

Meehan

Kucharik

et al. 2016

Ecological Applications

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“…Clade A is the gossypii group, and clade B is the glycines group. The tag numbers inside the bracket are the access numbers of sequences retrieved from NCBI Genbank and three or more generations of aphids reproduce on buckthorn (Bahlai et al 2008;Welsman et al 2007). However, it is not clear how many generations of A. glycines develop on the possible transitional host M. japonica in the field, although the aphid population clearly increases.…”

Section: Discussionmentioning

confidence: 99%

Discovery of a transitional host of the soybean aphid, Aphis glycines (Hemiptera: Aphididae), in northeastern China

Sun

Han

et al. 2015

Appl Entomol Zool

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To verify the availability of transitional hosts, eggs of aphids were collected from Rhamnus davurica Pallus (Rhamnales: Rhamnaceae), the hatched aphids were reared, and the subsequent winged generation was transferred onto several candidate hosts. The possible transitional hosts of A. glycines were Capsella bursa-pastoris (L.) Medic (Capparales: Brassicaceae), Metaplexis japonica (Thunb.) Makino (Gentianales: Asclepiadaceae), and Artemisia scoparia Waldst. et Kit (Asterales: Compositae). The aphids found on M. japonica were identified as A. glycines, and the aphids found on the other hosts were identified as the cotton aphid, Aphis gossypii Glover. Thus, M. japonica is likely the transitional host of A. glycines.

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“…In each trial, we placed a single adult ladybeetle at the end of the base tube and observed ladybeetle behavior for 30 min (Bahlai et al. ). We recorded an outcome only after the ladybeetle crossed the decision line, which was defined as 5 cm up either arm of the Y‐tube, and remained there for at least 30 s (an approach consistent with previous Y‐tube olfactometer studies involving ladybeetles, e.g., Bahlai et al.…”

Section: Methodsmentioning

confidence: 99%

Habitat use is linked to resource‐specific performance of an ecologically important marsh predator

Rinehart

Long

2018

Ecosphere

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It is commonly assumed that animals should preferentially use habitats that enhance their individual performance. However, there have been few attempts to empirically test the relationship between an animals’ habitat use and performance. This is surprising, since knowing about this connection should enhance our ability to predict the local population dynamics of ecologically important species. Here, we used three primary experiments to assess the relationship between habitat use and performance for an important insect consumer (ladybeetles). First, we used field manipulations of resource availability (i.e., scale insects and cordgrass pollen) to examine the habitat use of ladybeetle predators. Second, we conducted a series of no‐choice laboratory assays to compare the performance (fecundity and longevity) of ladybeetles on these different resources. Third, we quantified adult ladybeetle preference for olfactory cues from cordgrass with and without scale insects using a Y‐tube olfactometer. In the field, adult ladybeetles selectively used plots containing scale insects. In the laboratory, diets containing scale insects maximized both adult and larval ladybeetle longevity, and adult fecundity. Adult ladybeetles were attracted to chemical cues associated with scale insects over distances of 10s of centimeters. Overall, our findings suggest that the habitat use and performance of ladybeetles are strongly linked, with ladybeetles preferentially using habitats that maximize their individual performance.

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Role of Visual and Olfactory Cues from Agricultural Hedgerows in the Orientation Behavior of Multicolored Asian Lady Beetle (Coleoptera: Coccinellidae)

Cited by 30 publications

References 25 publications

Explicit modeling of abiotic and landscape factors reveals precipitation and forests associated with aphid abundance

Explicit modeling of abiotic and landscape factors reveals precipitation and forests associated with aphid abundance

Discovery of a transitional host of the soybean aphid, Aphis glycines (Hemiptera: Aphididae), in northeastern China

Habitat use is linked to resource‐specific performance of an ecologically important marsh predator

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