Overwintering Habits of
Homalodisca coagulata
, the Principal Natural Vector of Phony Peach Disease Virus

Pollard, Herschel N.; Kaloostian, George H.

doi:10.1093/jee/54.4.810

Cited by 9 publications

(9 citation statements)

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“…Such an ability would provide an adaptive advantage to escape hostile temperature conditions and to seek microhabitats that are more favorable. Consistent with our laboratory observations, Pollard and Kaloostian (1961) reported that H. vitripennis adults dropped off the plant on exposure to low winter temperatures in the Þeld. Such adult behavioral responses could increase their survival when cold stressed, because the soil temperature is often higher than ambient air temperature at nights in winter (Rosenberg 1974), and leaf litter on the soil surface in the Þeld can provide additional protection from the cold stress Sher 1992, Lam andPedigo 2000).…”

Section: Percent Survivalsupporting

confidence: 91%

“…This species overwinters as adults (Turner and Pollard 1959), and during that period, a majority of the females seem to be reproductively inactive (Hummel et al 2006). During winter, however, the adults feed and ßy during warm conditions (Pollard and Kaloostian 1961, Blua and Morgan 2003, Almeida et al 2005, Park et al 2006. Therefore, if feeding of H. vitripennis adults is inßuenced by temperature conditions, the prevailing low winter temperatures of speciÞc areas in northern and central California may limit feeding activity, which would further increase overwintering mortality.…”

mentioning

confidence: 99%

“…Pollard and Kaloostian (1961) observed that overwintering H. vitripennis adults generally remained sessile at temperatures Ͻ9.4ЊC, and Þrst ßights occurred only after the ambient air temperature had exceeded 11ЊC. In a laboratory study, xylem excreta production by adult H. vitripennis was heavily curtailed at low temperatures (Յ13.3ЊC) (Johnson et al 2006).…”

mentioning

confidence: 99%

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Influences of Temperature onHomalodisca vitripennis(Hemiptera: Cicadellidae) Survival Under Various Feeding Conditions

Son¹,

Groves²,

Daane³

et al. 2009

Environ Entomol

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Survival of the glassy-winged sharpshooter, Homalodisca vitripennis (Germar) (Hemiptera: Cicadellidae), was studied under various constant temperatures and feeding conditions. When provided a host plant (Citrus limon L. Burm. f.) to feed on during a 21-d trial, 100% mortality occurred at 0.1, 3.2, and 40.1 degrees C, whereas an average of 74-76% of adults survived in the 13.2-24.5 degrees C range. When individually confined with moist cotton, adult longevity was greatest (16.3 d) at 13.3 degrees C, but it was <3 d at -2.4 and 36.2 degrees C. In a companion study comparing the presence versus absence of a host plant, the presence of a host plant was not a significant factor influencing survival at temperatures < or =7.8 degrees C but was at temperatures > or =18.9 degrees C. The relationship between temperature and survival was described by a nonlinear function that estimated the optimum temperature in each feeding regimen: no host plant or moist cotton (5.5 degrees C), moist cotton (9.9 degrees C), and accessible host plant (25.1 degrees C). The model quantitatively predicted that H. vitripennis would survive longer periods at a wider temperature regimen when provided with a host plant than when provided with water alone (moist cotton) or when provided with neither plant host nor water. Our results suggest that continuous exposure to either low (<5 degrees C) or high (>30 degrees C) temperatures are detrimental for adult survival. Specifically, low temperatures caused early mortality because of inhibition of feeding activity and presumably this threshold lies between 7.8 and 13.2 degrees C. Furthermore, this study clearly shows that temperature may influence the survival of H. vitripennis adults regardless of feeding regimens, and its implications for population dynamics are discussed.

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Section: Percent Survivalsupporting

confidence: 91%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Influences of Temperature onHomalodisca vitripennis(Hemiptera: Cicadellidae) Survival Under Various Feeding Conditions

Son¹,

Groves²,

Daane³

et al. 2009

Environ Entomol

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“…In Georgia, H. coagulata adults survive the winter in what Turner and Pollard (1959) term an incomplete hibernation in which the insects were quiescent at cold temperatures, but were observed to feed and ßy above a temperature threshold (Pollard and Kaloostian 1961). Thus, Pollard and Kaloostian (1961) concluded that H. coagulata survive the winter as adults but do not have a programmed reproductive diapause.…”

Section: Discussionmentioning

confidence: 99%

“…Thus, Pollard and Kaloostian (1961) concluded that H. coagulata survive the winter as adults but do not have a programmed reproductive diapause. Our data suggest that incomplete hibernation similar to that described by Turner and Pollard (1959) also occurs in the population of H. coagulata at the Riverside, CA, study site.…”

Section: Discussionmentioning

confidence: 99%

Seasonal Patterns of FemaleHomalodisca coagulata(Say) (Hemiptera: Cicadellidae) Reproductive Physiology in Riverside, California

et al. 2006

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Behavioral Model forHomalodisca vitripennis(Hemiptera: Cicadellidae): Optimization of Host Plant Utilization and Management Implications

et al. 2008

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The glassy-winged sharpshooter, Homalodisca vitripennis (Germar), (Hemiptera: Cicadellidae), is a xylophagous leafhopper native to the southeastern United States and northern Mexico, with recent introductions into California, Arizona, French Polynesia, and Hawaii. It is a primary vector of the xylem-limited bacterium, Xylella fastidiosa Wells et al., the causative agent of Pierce's disease of grape, citrus variegated chlorosis, phony peach, and numerous leaf scorch diseases. H. vitripennis uses several hundred species of host plants for feeding, development, and reproduction. Variation in host utilization allows H. vitripennis to respond to diurnal and seasonal changes in its nutrient-poor food source, xylem fluid, as well as changing nutritional requirements of each leafhopper developmental stage. Here we provide a conceptual model that integrates behavior, life history strategies, and their associated risks with the nutritional requirements of adult and nymphal stages of H. vitripennis. The model is a useful heuristic tool that explains patterns of host plant use, describes insect behavior and ecology, suggests new associations among the ecological components, and most importantly, identifies and supports the development of suppression strategies for X. fastidiosa aimed at reducing vector populations through habitat manipulation.

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Overwintering Habits of Homalodisca coagulata , the Principal Natural Vector of Phony Peach Disease Virus

Cited by 9 publications

References 0 publications

Influences of Temperature onHomalodisca vitripennis(Hemiptera: Cicadellidae) Survival Under Various Feeding Conditions

Influences of Temperature onHomalodisca vitripennis(Hemiptera: Cicadellidae) Survival Under Various Feeding Conditions

Seasonal Patterns of FemaleHomalodisca coagulata(Say) (Hemiptera: Cicadellidae) Reproductive Physiology in Riverside, California

Behavioral Model forHomalodisca vitripennis(Hemiptera: Cicadellidae): Optimization of Host Plant Utilization and Management Implications

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