Pheromone production by the pine engraver Ips pini following flight and starvation

Gries, Gerhard; Bowers, W. W.; Noble, Mary; Borden, John H.

doi:10.1016/0022-1910(90)90168-f

Cited by 32 publications

(16 citation statements)

References 31 publications

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“…For example, our model (results shown in Table 1) predicts that for females exposed to 1,250 ppm terpinolene, 17.4% of those with a body condition index of 1.0 mg would die, while 93.7% of those with a body condition of -1.0 mg would die. Other studies of bark beetles have also implied that individuals with lower energy reserves are less tolerant of high levels of semiochemicals (Anderbrant et al 1985;Gries et al 1990;Sallé and Raffa 2007). Given these results, toxicity studies, which typically quantify the lethal dose or concentration predicted to kill 50% of individuals (LD50 and LC50, respectively), need to be interpreted with care and they should report the body condition of test subjects.…”

Section: Discussionmentioning

confidence: 99%

“…Direct tests of the effects of monoterpenes, a dominant class of conifer defences (Keeling and Bohlmann 2006), on bark beetles suggest that individual beetles with more lipid reserves are more likely to enter media amended with monoterpenes than are those with lower lipids (Wallin and Raffa 2000, 2002. Whether this pattern is associated with energy-dependent tolerance of defences is unknown, although bark beetle mortality in response to monoterpene exposure appears to increase under conditions correlated with lower energy (Anderbrant et al 1985;Gries et al 1990).…”

Section: Introductionmentioning

confidence: 99%

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Condition-dependent tolerance of monoterpenes in an insect herbivore

Reid

Purcell

2011

Arthropod-Plant Interactions

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The ability of a herbivore to tolerate plant defensive chemicals may vary with the herbivore's energetic state. We investigated the effect of body condition on the survivorship of individual mountain pine beetles, Dendroctonus ponderosae, exposed to host monoterpenes at concentrations comparable to constitutive and induced levels of defence using fumigant exposure. Body condition index was calculated as the residual mass after fitting the relationship between fresh weight and body size. Differences in survivorship among the four monoterpenes tested (a-pinene, myrcene, terpinolene and limonene) were small. Beetles with a higher body condition index survived high monoterpene concentrations better than those in poorer condition. There was no direct effect of sex, but positive effects of body size and fat content on survivorship favoured females, the sex that pioneers attacks on live trees. Higher body condition index corresponded to both higher fat content and fat-free body mass; the same conclusions about monoterpene identity and size-dependent or energy-dependent tolerance of high monoterpene concentrations held if fat or fat-free body mass were used in place of body condition index. This study highlights the need to consider insect body condition in understanding insectplant interactions.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Condition-dependent tolerance of monoterpenes in an insect herbivore

Reid

Purcell

2011

Arthropod-Plant Interactions

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“…Such short flights might be expected because there are several advantages to conserving energy. Individuals with high energy reserves are better able to overcome tree defences ( Gries et al , 1990 ;J. R. Purcell & M. L. Reid, unpublished results) and have higher reproductive investment ( Elkin & Reid, 2005 ).…”

Section: Introductionmentioning

confidence: 97%

Intrinsic and extrinsic determinants of mountain pine beetle population growth

Trzcinski

Reid

2009

Agri and Forest Entomology

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1 Mountain pine beetle Dendroctonus ponderosae populations have large, economically significant outbreaks. Density dependence and environmental variability are expected to have important effects on their dynamics. We analysed time series data from an outbreak in the 1930s to determine the relative importance of population density and environmental variability on local population growth rates. 2 Resource depletion occurred rapidly at the scale of 0.4 ha and population growth rates were strongly density dependent. Annual environmental changes did not have detectable effects on population growth rates, leading to the conclusion that intrinsic processes influenced local population density more than extrinsic factors during this outbreak. 3 Our calculated value of r max (1.16) does not suggest intrinsically cyclic population dynamics. Our estimate of r max and density dependence will be useful in developing applied models of mountain pine beetle outbreaks, and the subsequent evaluation of management strategies.

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“…Suitable host trees are often unevenly distributed in forest landscapes, and inefficient host-finding behaviors can waste a beetle's limited energy reserves (Atkins, 1966;Gries et al, 1990;Kinn et al, 1994), as well as increase its risk of predation (Stephen and Dahlsten, 1976;Dahlsten, 1982) and exposure to harsh environmental conditions (McMullen and Atkins, 1962;Gries et al, 1989;Byers et al, 1998). There is an accumulating body of evidence suggesting that foraging coniferophagous bark beetles detect and avoid volatile compounds released from the leaves and/or bark of angiosperms and other nonhost taxa ('nonhost volatiles'), and thereby may improve foraging efficiency by avoiding nonhostdominated habitats and landings on unsuitable trees.…”

Section: Introductionmentioning

confidence: 99%

Southern Pine Beetle, Dendroctonus frontalis, Antennal and Behavioral Responses to Nonhost Leaf and Bark Volatiles

Shepherd

Sullivan

2013

J Chem Ecol

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A growing body of evidence suggests that bark beetles detect and avoid release points of volatile compounds associated with nonhost species, and thus such nonhost volatiles may have potential utility in the management of bark beetles. We used a coupled gas chromatograph-electroantennographic detector (GC-EAD) to assay the olfactory sensitivity of the southern pine beetle, Dendroctonus frontalis Zimmermann, to volatiles from leaves and bark of eight species of nonhost angiosperm trees that are common in the range of D. frontalis. Tree species sampled were red maple (Acer rubrum L.), mockernut hickory [Carya alba (L.) Nutt. ex Ell.], sweetgum (Liquidambar styraciflua L.), black tupelo (Nyssa sylvatica Marsh.), black cherry (Prunus serotina Ehrh.), southern red oak (Quercus falcata Michx.), blackjack oak [Quercus marilandica (L.) Muenchh.], and water oak (Quercus nigra L.). Beetle antennae responded to a total of 28 identifiable compounds in these samples. The relative olfactory responsiveness to 14 of these, as well as to nonanoic acid and four additional volatiles reported to be associated with nonhost angiosperms, was assessed in GC-EAD analyses of synthetic dilutions spanning six orders of magnitude. The largest response voltage amplitudes were obtained with trans-conophthorin, nonanoic acid, terpinen-4-ol, phenylethyl alcohol, and eucalyptol, whereas the lowest response thresholds were to nonanoic acid, nonanal, linalool, (E)-2-hexen-1-ol, and phenylethyl alcohol. Funnel traps baited with various combinations of eleven antennally-active angiosperm volatiles along with a standard attractant captured significantly fewer male and female D. frontalis than traps baited with the standard attractant alone. Our data suggest that a diversity of semiochemicals may be involved in host species discrimination by D. frontalis, and several may have utility in their management.

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Pheromone production by the pine engraver Ips pini following flight and starvation

Cited by 32 publications

References 31 publications

Condition-dependent tolerance of monoterpenes in an insect herbivore

Condition-dependent tolerance of monoterpenes in an insect herbivore

Intrinsic and extrinsic determinants of mountain pine beetle population growth

Southern Pine Beetle, Dendroctonus frontalis, Antennal and Behavioral Responses to Nonhost Leaf and Bark Volatiles

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