Effect of Soil Moisture on Development of Diaprepes abbreviatus (Coleoptera: Curculionidae)

Lapointe, Stephen L.; Shapiro, Jeffrey P.

doi:10.2307/3496582

Cited by 61 publications

(52 citation statements)

References 9 publications

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“…Lapointe and Shapiro (1999) determined that optimal survival to pupation of D. abbreviatus in the laboratory occurred at 30-70% soil moisture, under which 60-65% of larvae survived to pupation (Lapointe and Shapiro 1999). The poorest survival of larvae occurred in low (20%) and in high (80%) soil moisture levels (Lapointe and Shapiro 1999). Our results support the observation that the poorest survival occurs under flooded conditions.…”

Section: Discussionsupporting

confidence: 81%

“…Also, significantly smaller head capsule widths were noted from flooded marl soil than from non-flooded marl or non-flooded potting medium (Martin et al 2010a). Hence, the lowest survival rates of D. abbreviatus larvae would be expected under flooded conditions, whereas highest survival should be in non-flooded conditions without excessively low soil moisture (30-70%) (Lapointe and Shapiro 1999).…”

Section: Discussionmentioning

confidence: 99%

“…Durations of flooding under these conditions were apparently too short for buttonwood to develop flooding adaptations such as adventitious roots, and Swingle citrumelo may have not been flooded long enough to reduce its leaf gas exchange or growth. Lapointe and Shapiro (1999) determined that optimal survival to pupation of D. abbreviatus in the laboratory occurred at 30-70% soil moisture, under which 60-65% of larvae survived to pupation (Lapointe and Shapiro 1999). The poorest survival of larvae occurred in low (20%) and in high (80%) soil moisture levels (Lapointe and Shapiro 1999).…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of Root Feeding by Diaprepes abbreviatus (Coleoptera: Curculionidae) Larvae on Leaf Gas Exchange and Growth of Three Ornamental Tree Species

Diaz¹,

Mannion²,

Schaffer³

2006

Journal of Economic Entomology

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Section: Discussionsupporting

confidence: 81%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Root Feeding by Diaprepes abbreviatus (Coleoptera: Curculionidae) Larvae on Leaf Gas Exchange and Growth of Three Ornamental Tree Species

Diaz¹,

Mannion²,

Schaffer³

2006

Journal of Economic Entomology

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“…This culture was periodically supplemented from a large culture maintained at the Division of Plant Industry Sterile Fly Facility in Gainesville, FL, USA. Larvae were reared on an artificial diet developed by Beavers (1982) using procedures described by Lapointe and Shapiro (1999). Larvae used in experiments were 3rd to 6th instars.…”

Section: Methodsmentioning

confidence: 99%

Subterranean Herbivore-induced Volatiles Released by Citrus Roots upon Feeding by Diaprepes abbreviatus Recruit Entomopathogenic Nematodes

2010

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Herbivore-induced volatile emissions benefit plant hosts by recruiting natural enemies of herbivorous insects. Such tritrophic interactions have been examined thoroughly in the above-ground terrestrial environment. Recently, similar signals have also been described in the subterranean environment, which may be of equal importance for indirect plant defense. The larvae of the root weevil, Diaprepes abbreviates, are a serious pest of citrus. Infestations can be controlled by the use of entomopathogenic nematodes, yet the interactions between the plant, insect and nematode are poorly understood and remain unpredictable. In bioassays that used a root zone six-arm olfactometer, citrus roots ('Swingle citrumelo' rootstock) recruited significantly more entomopathogenic nematodes (Steinernema diaprepesi) when infested with root weevil larvae than non-infested roots. Infested plants were more attractive to nematodes than larvae alone. Roots damaged by weevil larvae attracted more nematodes than mechanically damaged roots and sand controls. By dynamic in situ collection and GC-MS analysis of volatiles from soil, we determined that four major terpene compounds were produced by infested plant roots that were not found in samples from non-infested roots or soil that contained only larvae. Solvent extracts of weevil-infested roots attracted more nematodes than extracts of non-infested roots in a two choice sand-column bioassay. These findings suggest that Swingle citrus roots release induced volatiles as an indirect defense in response to herbivore feeding, and that some of these induced volatiles function as attractants for entomopathogenic nematodes.

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“…Some insects are more abundant during drier than normal conditions (Hawkins and Holyoak 1998, Morecroft et al 2002, Chase and Knight 2003, others are more abundant during wetter years (Pollard et al 1997, Frampton et al 2000, Hertl et al 2001, Ellis et al 2004, and yet others require intermediate levels of, for example, soil moisture, for maximum reproductive success (Parker 1930, Gaylor and Frankie 1979, LaPointe and Shapiro 1999 or are influenced by complex dynamics between air temperature and soil moisture (Mukerji and Gage 1978). We do not know how extent of drought specifically affects the insects on which Cliff Swallows rely for food, but the birds' earlier nesting in drier years suggests that they are generally less food stressed then than in very wet seasons.…”

Section: Drought and Availability Of Foodmentioning

confidence: 99%

Breeding time in a migratory songbird is predicted by drought severity and group size

Brown

2014

Ecology

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Abstract. Global climate change is altering the breeding phenology of many organisms, and one reported consequence of warmer average temperatures is earlier breeding times in migratory songbirds of north temperate latitudes. Less studied are the potential interactions between earlier breeding and social behavior in colonial species. We investigated how breeding time, as measured by colony initiation dates across the entire summer, in Cliff Swallows (Petrochelidon pyrrhonota) of southwestern Nebraska, USA, changed over a 30-year period and could be predicted by climatic variables, year, and colony size. Mean colony initiation date became earlier over the study, with variation best predicted by the extent of drought severity on the breeding grounds: colonies initiated earlier in warmer and drier years. Colony initiation dates were more asynchronous across the population in cooler and wetter years. There was no effect of climatic conditions during the nonbreeding season. Larger colonies started earlier in the year than smaller ones, probably because of the cost of ectoparasitism and the benefit of social foraging, both of which varied with colony size, date, and climatic conditions. The inverse relationship between breeding time and colony size was more pronounced in years with more severe drought. This study is one of the few to show that breeding phenology of a long-distance migrant bird is sensitive primarily to drought severity on the breeding grounds and that climate change can influence social behavior. If climate change exacerbates drought in the future, Cliff Swallow breeding time will likely become more strongly linked to group size.

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Effect of Soil Moisture on Development of Diaprepes abbreviatus (Coleoptera: Curculionidae)

Cited by 61 publications

References 9 publications

Effect of Root Feeding by Diaprepes abbreviatus (Coleoptera: Curculionidae) Larvae on Leaf Gas Exchange and Growth of Three Ornamental Tree Species

Effect of Root Feeding by Diaprepes abbreviatus (Coleoptera: Curculionidae) Larvae on Leaf Gas Exchange and Growth of Three Ornamental Tree Species

Subterranean Herbivore-induced Volatiles Released by Citrus Roots upon Feeding by Diaprepes abbreviatus Recruit Entomopathogenic Nematodes

Breeding time in a migratory songbird is predicted by drought severity and group size

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