Host stress influences oviposition preference and performance of a pine sawfly

Tisdale, Robert A.; Wagner, Michael R.

doi:10.1111/j.1365-2311.1991.tb00229.x

Cited by 20 publications

(12 citation statements)

References 19 publications

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“…It has been hypothesized that the combined action of changes in host plant quality due to drought stress and insect's response to increased temperature could allow insect populations to escape natural enemies [35,84]. This hypothesis was not verified for I. typographus and other Scolytidae during the 2003 drought: in Northeastern France, captures of Thanasimus formicarius L., a parasitoid of these Scolytids occurred earlier in 2003 than usually recorded (Fig.…”

Section: Impacts On Interspecific Interactionsmentioning

confidence: 75%

Effects of drought and heat on forest insect populations in relation to the 2003 drought in Western Europe

Candau²,

et al. 2006

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-Although drought affects directly tree physiology and growth, the impact of secondary factors (insect pests, pathogens and fire) is often greater than the impact of the original stress and can lead to important tree mortality. In 2003, Western and Central Europe experienced a drought and heat waves that led to extensive forest damage. This paper reports on the impacts of drought and high temperatures on forest insect populations in the context of this exceptional event. Observations of changes in population levels of the main European forest insect pests during and after the drought are presented and discussed in the light of current knowledge and theories of interactions between drought and insects. We investigated the direct effects of drought on life history traits and indirect effects through physiological changes experienced by host trees. Forest pest insects were separated in 4 feeding guilds: woodborers, leaf-chewers, leaf-miners and leaf-suckers. The impact of water stress varied according to feeding guilds. Woodborers were positively influenced by prolonged water stress and the decline of host resistance. In contrast, defoliators profited better from the increased nitrogen in plant tissues linked to moderate or intermittent water stress. Field observations showed the importance of the soil water status in tree resistance against pest attacks. Thus, the 2003 drought confirmed observations from earlier droughts that, is case of bad choice of tree species in some plantations, site matching becomes a prominent and primary cause of the development of pest outbreaks. This exceptional drought may give us some indication of the impacts of extreme climatic events. However, observations of the performance at the individual level were not sufficient for predicting long-term insect population dynamics, which depends on complex interactions between biotic and abiotic factors.climate change / drought / heat wave / forest pest insect / population dynamic Résumé -Effet de la sécheresse et de la canicule de 2003 sur les populations d'insectes ravageurs forestiers en Europe centrale et occidentale. Bien que la sécheresse affecte directement la physiologie et la croissance des arbres, l'impact de facteurs secondaires (insectes ravageurs, pathogènes et feu) est souvent plus important que le stress original et peut conduire à la mortalité des arbres. En 2003, une sécheresse et des vagues de chaleur ont provoqué des dégâts importants dans les forêts d'Europe centrale et occidentale. Cet article rend compte de l'impact de la sécheresse et de la canicule sur les populations d'insectes forestiers dans le contexte de cet évènement exceptionnel. Les observations des fluctuations de populations des principaux insectes ravageurs des forêts européennes sont présentées et discutées en regard des connaissances actuelles et des théories des interactions entre sécheresse et insectes. Nous avons recherché les effets directs et indirects de la sécheresse, respectivement sur les traits d'histoire de vie et au travers des modifica...

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Section: Impacts On Interspecific Interactionsmentioning

confidence: 75%

Effects of drought and heat on forest insect populations in relation to the 2003 drought in Western Europe

Candau²,

et al. 2006

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“…Prestidge 1982aPrestidge , 1982bLoader and Damman 1991;Spike and Tollefson 1991;Meyer and Root 1996), by root trenching (e.g. Tisdale and Wagner 1991) or by applying different nutrient mixtures (e.g. Horner and Abrahamson 1992).…”

Section: Discussionmentioning

confidence: 99%

Nutrient stress, host plant quality and herbivore performance of a leaf-mining fly on grass

Bruyn¹,

Scheirs

Verhagen

2002

Oecologia

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Environmental stresses affect plant growth and performance in nature. Host plant quality in turn affects herbivore performance and population dynamics. In view of these interactions, two major hypotheses were formulated. The plant stress hypothesis proposes that physiologically stressed plants become more susceptible to herbivores. The plant vigour hypothesis proposes that plants that grow vigorously are favourable to herbivores. Here we test the plant stress/plant vigour hypotheses for a leaf miner, Agromyza nigripes (Diptera; Agromyzidae), on the grass Holcus lanatus. We assessed larval performance (survival, developmental time, pupal mass) on grasses growing under different levels of nutrients (Hoagland solution) and drought stress, under controlled field and greenhouse conditions. Plant vigour and nutrient content were high on soils with an intermediate nutrient concentration and lower under drought stress and soil nutrient shortage and overdose. Larval performance was also highest on wet soils with intermediate nutrient supply. The results of the mining flies support the plant vigour hypothesis (density, survival and development better on vigorous plants). Herbivore performance is higher on leaves with a higher protein content.

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“…In this study, we examine the effects of resource availability (nutrients and water) on plant traits, on host selection, and on the performance of adult and larval leaf beetles. The availability of resources (e.g., nutrients, water, light) is a key determinant of plant quality and herbivore preference and performance (Tisdale and Wagner 1991;Mensah and Madden 1992;Jauset et al 1998;Koricheva et al 1998;Mutikainen et al 2000). Moreover, these factors often interact to alter plant suitability to herbivores (Larsson et al 1986;Coleman and Jones 1988;Tisdale and Wagner 1991).…”

Section: Introductionmentioning

confidence: 99%

Preference and performance of a willow-feeding leaf beetle: soil nutrient and flooding effects on host quality

2003

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The distribution and abundance of herbivores on plants growing under different environmental conditions may depend upon preference and/or performance. Soil nutrients and water availability are key determinants of herbivore distribution, as both influence plant growth and tissue quality. However, the effects of water on plant quality may depend upon the availability of nutrients and vice versa. Surprisingly few studies have examined the interactions between the two. We investigated the effects of soil nutrient and water availability on (1) the growth and chemistry of the silky willow (Salix sericea Marshall), and (2) the preference and performance of the imported willow leaf beetle (Plagiodera versicolora Laichartig). We conducted two common garden experiments using a similar 2x2 fully factorial design with two levels of soil nutrients (low, high) and two levels of water availability (field capacity, flooded). In the first experiment (larval performance), larval development time and pupal weight were not influenced by nutrient or water availability to the plant. This occurred despite the fact that plants in the high nutrient treatments had higher protein concentration and lower foliar concentrations of the phenolic glycoside 2'-cinnamoylsalicortin. In the second experiment (adult preference), we caged four plants (one from each treatment) and released beetles into cages. We found that plant growth and leaf protein depended upon the interaction between nutrient and water availability. Plant growth was greatest in the high nutrient-field capacity treatment and leaf protein was greatest in the high nutrient-flooded treatment. In contrast, adults settled and oviposited preferentially on the high nutrient treatment under flooded conditions, but we found no evidence of interactions between nutrients and water on preference. Thus, at least under flooded conditions nutrients affect adult preference. We also found that foliar protein was correlated positively with adult oviposition preference and per capita egg production. Our results, then, suggest that soil nutrients can influence adult preference, and that adults choose high-quality hosts (high protein) that promote egg production.

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Host stress influences oviposition preference and performance of a pine sawfly

Cited by 20 publications

References 19 publications

Effects of drought and heat on forest insect populations in relation to the 2003 drought in Western Europe

Effects of drought and heat on forest insect populations in relation to the 2003 drought in Western Europe

Nutrient stress, host plant quality and herbivore performance of a leaf-mining fly on grass

Preference and performance of a willow-feeding leaf beetle: soil nutrient and flooding effects on host quality

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