Effect of Intraspecific Competition on Progeny Production of<i>Tomicus piniperda</i>(Coleoptera: Scolytidae)

Amézaga, Ibone; Garbisu, Carlos

doi:10.1603/0046-225x-29.5.1011

Cited by 13 publications

(10 citation statements)

References 33 publications

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“…1 and 2; Tables 2 and 3), that have been previously reported to play a role in the process of host tree selection by conifers phytophagous insects [1,2,[4][5][6][7][8][9][10][11]15,[17][18][19][20]. Traces of non-terpenoid volatiles, such as 4-methyl-hex-4-en-3-one, oct-1-en-3-ol and benzaldehyde were also identified, although not used for data treatment.…”

Section: Resultsmentioning

confidence: 99%

“…The larvae excavate galleries in the phloem of the trunks and of freshly cut logs, while adults must feed on shoots to complete sexual maturation [1][2][3][4]. T. piniperda is a monogamous species which have no known pheromones to either attract mates or locate breeding sites [5]. Host selection is achieved by detection of the monoterpenes released by the trees, which act as kairomones [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…T. piniperda is a monogamous species which have no known pheromones to either attract mates or locate breeding sites [5]. Host selection is achieved by detection of the monoterpenes released by the trees, which act as kairomones [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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Characterization of the volatile fraction emitted by phloems of four pinus species by solid-phase microextraction and gas chromatography–mass spectrometry

Santos

Vasconcelos²,

Mateus

et al. 2006

Journal of Chromatography A

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Pine forests constitute some of the most important renewable resources supplying timber, paper and chemical industries, among other functions. Characterization of the volatiles emitted by different Pinus species has proven to be an important tool to decode the process of host tree selection by herbivore insects, some of which cause serious economic damage to pines. Variations in the relative composition of the bouquet of semiochemicals are responsible for the outcome of different biological processes, such as mate finding, egg-laying site recognition and host selection. The volatiles present in phloem samples of four pine species, P. halepensis, P. sylvestris, P. pinaster and P. pinea, were identified and characterized with the aim of finding possible host-plant attractants for native pests, such as the bark beetle Tomicus piniperda. The volatile compounds emitted by phloem samples of pines were extracted by headspace solid-phase micro extraction, using a 2 cm 50/30 mm divinylbenzene/carboxen/polydimethylsiloxane table flex solid-phase microextraction fiber and its contents analyzed by high-resolution gas chromatography, using flame ionization and a non polar and chiral column phases. The components of the volatile fraction emitted by the phloem samples were identified by mass spectrometry using time-of-flight and quadrupole mass analyzers. The estimated relative composition was used to perform a discriminant analysis among pine species, by means of cluster and principal component analysis. It can be concluded that it is possible to discriminate pine species based on the monoterpenes emissions of phloem samples.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Characterization of the volatile fraction emitted by phloems of four pinus species by solid-phase microextraction and gas chromatography–mass spectrometry

Santos

Vasconcelos²,

Mateus

et al. 2006

Journal of Chromatography A

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“…Similarly, decay fungi, which are usually most abundant in roots close to the cut surface (von Sydow, 1993), can affect larvae feeding in this zone and those unable to locate unaffected bark may pupate earlier, and at lower mass, than those feeding at a greater depth on unaffected bark. In bark beetles, larval competition for food often results in the emergence of smaller adults (Anderbrant & Schlyter, 1989, Amezaga & Garbisu, 2000), an effect that can be more pronounced in late than early‐emerging adults (Anderbrant et al , 1985). The fact that later‐emerging pine weevils were larger than those emerging earlier suggests that a reduction in the amount or quality of food over the development period was not an important factor.…”

Section: Discussionmentioning

confidence: 99%

Flight ability and reproductive development in newly‐emerged pine weevil Hylobius abietis and the potential effects of climate change

Tan

Wainhouse

Day³

et al. 2010

Agri and Forest Entomology

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1 Adult pine weevils Hylobius abietis emerge from conifer root-stumps, on which larvae develop, over an extended period during summer and autumn. Newly-emerged weevils were tested for their ability to fly and assessed for wing muscle and reproductive development. In addition, the effect of summer-autumn maturation feeding on reproductive development was assessed in field bioassays. 2 There was considerable variation in development between newly-emerged weevils that was related to the timing of emergence. The first weevils, emerging in early July, weighed less than later-emerging ones, had undeveloped flight muscles and did not fly. Over the emergence period, wing muscle size and flight ability increased markedly, with 50-60% flying by mid-September. Differences between emerging adults are likely to have been affected by temporal changes in the quality of the bark on which the larvae feed. 3 Reproductive development lagged behind that of wing muscles but, in early August, there was a rapid increase in the proportion of weevils with immature eggs and a corresponding increase in oocyte size. However, although wing muscles were fully formed in later-emerging weevils, immature eggs were only approximately 10% of the volume of mature eggs. 4 In field bioassays of summer-autumn maturation feeding, eggs continued to develop and some weevils laid mature eggs. Feeding and development during the preoverwinter period is likely to influence winter survival and also dispersal and reproduction in the following spring. 5 The potential effects of climate change on the weevil life cycle are briefly discussed.Weevils are likely to benefit from the higher temperatures and later autumns predicted under climate change, resulting in an increase in damage to transplants.

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“…Laboratory studies have demonstrated the negative influence of intraspecific competition on bark beetle productivity and on the size and fat content of emerging offspring (Atkins, 1975; Botterweg, 1983; Anderbrant et al ., 1985; Sauvard, 1989; Anderbrant, 1990; Amezaga and Garbisu, 2000). Consequently, it has been hypothesized that outbreak conditions could induce modifications of beetle size at a population scale (Botterweg, 1982).…”

Section: Introductionmentioning

confidence: 99%

Size and shape changes of Ips typographus L. (Coleoptera: Scolytinae) in relation to population level

Sallé

Baylac

Lieutier

2005

Agri and Forest Entomology

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1 High intraspecific competition is known to occur during Ips typographus outbreaks, and is thought to be the main factor regulating epidemic populations by affecting beetle population productivity. However, little is known about the consequences of intraspecific competition on population quality during outbreaks, although it could have consequences on beetle population dynamics. 2 Ips typographus morphological variations among localities, years and beetle population levels were investigated in 10 Norway spruce (Picea abies) stands having various beetle damage intensities. Beetle size and shape estimators based on wing length, and using isometric size and log-shape ratios, were employed. Field-caught beetles were compared with beetles emerging from controlled breeding at different densities, performed in the laboratory. Beetles from this colony were also used to check the influence of breeding densities on the size estimator. 3 Size variations occurred among localities and years and were consistent with the epidemic or latent status of the beetle populations. Controlled breeding confirmed the negative effect of beetle densities encountered in the field on offspring size. Two hypotheses are formulated to explain this increase of intraspecific competition during an outbreak, but our data support the effect of host quality change between latent and epidemic populations. 4 Shape variations also occurred among localities but were unrelated to beetle population levels. No groups consistent with a geographical structure were found, suggesting low genetic variation for I. typographus populations in France.

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Effect of Intraspecific Competition on Progeny Production ofTomicus piniperda(Coleoptera: Scolytidae)

Cited by 13 publications

References 33 publications

Characterization of the volatile fraction emitted by phloems of four pinus species by solid-phase microextraction and gas chromatography–mass spectrometry

Characterization of the volatile fraction emitted by phloems of four pinus species by solid-phase microextraction and gas chromatography–mass spectrometry

Flight ability and reproductive development in newly‐emerged pine weevil Hylobius abietis and the potential effects of climate change

Size and shape changes of Ips typographus L. (Coleoptera: Scolytinae) in relation to population level

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