Behavioral and ecological constraints imposed by plants on insect parasitoids: Implications for biological control

Kester, Karen M.; Barbosa, Pedro

doi:10.1016/1049-9644(91)90108-c

Cited by 70 publications

(37 citation statements)

References 95 publications

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“…12, 2002 Behavioral responses of two Manduca spp. to nicotine 7 congregata (Thurston & Fox, 1972;Barbosa et al 1986;Kester & Barbosa 1991). Thorpe & Barbosa (1986) report that over a 2-week exposure period, higher levels of parasitism by C. congregata occurred on hornworms feeding on the low than on the high nicotine genotypes also used in our study.…”

Section: Discussionmentioning

confidence: 91%

“…Alternatively, feeding on low-nicotine regions of tobacco leaves may constitute a counteradaptation for evasion of parasitism by tobaccoadapted C. congregata. For example, females of C. congregata from this same ''tobacco population'' show a positive dosage-dependent searching response to nicotine that differs from that of females collected from a ''tomato population'' and these differential responses can be linked to parasitism levels of M. sexta on tobacco and tomato in the field (Kester & Barbosa 1991, 1994. Predation risk alone did not differ significantly among within-leaf feeding site locations (P \ 0.05, N= 73; Table 2B, Fig.…”

Section: Discussionmentioning

confidence: 99%

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The roles of nicotine and natural enemies in determining larval feeding site distributions of Manduca sexta L. and Manduca quinquemaculata (Haworth) on tobacco

et al. 2002

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Field observations indicated that hornworms select feeding sites non-randomly on tobacco. We tested the hypotheses that differences in feeding site locations of larvae of Manduca sexta L. and Manduca quinquemaculata (Haworth) (Lepidoptera: Sphingidae) on tobacco could be explained by differential nicotine concentrations within plants and leaves, species-specific responses to nicotine, or pressure exerted by natural enemies. Results showed that third-instar larvae of M. sexta fed more proximally and centrally on the leaf, whereas M. quinquemaculata fed more distally. Withinplant selection of leaves did not differ; both species selected leaves in the middle region of the plant. Nicotine concentrations in a high nicotine genotype, NC95, varied within each leaf, increasing 2 -3 fold from the basal to apical portion of the leaf, and within each plant, increasing 7 -10 fold from the first fully expanded leaf to the twelfth (lowest) leaf. In laboratory bioassays, both Manduca species responded to nicotine as a feeding deterrent. Electrophysiological studies demonstrated that gustatory organs of both species responded to nicotine at concentrations found in tobacco leaves and that M. quinquemaculata generally showed a less vigorous response to nicotine than M. sexta. Field mortality of M. sexta due to parasitism by Cotesia congregata (Say) and to parasitism and predation combined differed among feeding sites; predation alone did not. Results suggest that although nicotine concentration and species specific responses to nicotine play a role in determining feeding site locations, pressure exerted by natural enemies, especially parasitism by C. congregata, is more important.

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Section: Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 99%

The roles of nicotine and natural enemies in determining larval feeding site distributions of Manduca sexta L. and Manduca quinquemaculata (Haworth) on tobacco

et al. 2002

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“…Since this parasitoid lives in caves and is a less-active species (Wang et al 1996;Wei et al 2008a), it is possible that they have adapted to different ecological environments and developed into different populations after long years of evolving with their own host species and host tree species (Kester and Barbosa 1991;Magalhães et al 2007). Tree species certainly influence the frass volatiles of woodborers (Wei et al 2011).…”

Section: Specialization Of Different Populations Of D Helophoroides mentioning

confidence: 99%

Attraction of the Bark Beetle ParasitoidRoptrocerus xylophagorum(Hymenoptera: Pteromalidae) to Host-Associated Olfactory Cues

et al. 2000

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“…Thus, innate responses to the host-plant odour were found out in parasitoids of monophagous hosts (e.g. Kester & Barbosa, 1991Kaiser & CardeÂ , 1992), whereas in parasitoids of polyphagous hosts, responses are largely dependent on learning through adult experience (see Turlings et al, 1993;Vet et al, 1995, for a review). Variation in the ability to respond innately to odours from the host habitat may exist not only among but also within a parasitoid species.…”

Section: Introductionmentioning

confidence: 99%

“…Responses at emergence are not necessarily fully genetically determined because they can arise from a conditioning before or at emergence (e.g. Kester & Barbosa, 1991;Cortesero & Monge, 1994). Compared with learning, the role of genetic variability in responses to odours from the host habitat has hardly been investigated in parasitoids.…”

Section: Introductionmentioning

confidence: 99%

Variability and genetic components of innate fruit odour recognition in a parasitoid of Drosophila

Campan¹,

Couty²,

Carton³

et al. 2002

Physiological Entomology

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Abstract. This study aims to investigate the genetic variability of olfactory responses to odours from the host habitat, involved in host selection by insect parasitoids. The probing response of females to fruit and non-fruit odours was studied in Leptopilina boulardi Barbotin et al. (Hymenoptera, Figitidae), a parasitoid of the frugivorous Drosophila melanogaster larvae. Responses of two strains (from Nasrallah, Tunisia, and from Brazzaville, Congo) and their hybrids were compared. Probing is a searching mode by repeated ovipositor insertions into the breeding substrate to locate digging larvae. Most Brazzaville females exhibited innate ovipositor probing into agar in response to the fruit aromas (banana, orange, pear, prickly pear), whereas this was rare in the Nasrallah strain. These four fruits are all breeding sites for D. melanogaster, whereas mushroom is not. Mushroom odour did not trigger any probing response in either strain. In addition, the latency of the probing response was shorter in Brazzaville females. Results from hybrid females (F1 and Backcross) showed that both probability to probe in response to a fruit aroma and latency of the response were strongly heritable. Regarding the probability to probe, there was an apparent complete dominance of Nasrallah characteristics, whereas additive inheritance was found in the Brazzaville lineage. The contrast between reciprocal F1 hybrids suggested a strong interaction with non-chromosomal factors. It is suggested that a cytoplasmic factor in the Nasrallah strain decreases females' propensity to probe in response to significant odours. The latency of probing appeared to be under a chromosomal influence. Thus, this study identifies a strong genetic component in the responses to odours from the host habitat. It also provides information on the genetic basis of the two characters studied.

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Behavioral and ecological constraints imposed by plants on insect parasitoids: Implications for biological control

Cited by 70 publications

References 95 publications

The roles of nicotine and natural enemies in determining larval feeding site distributions of Manduca sexta L. and Manduca quinquemaculata (Haworth) on tobacco

The roles of nicotine and natural enemies in determining larval feeding site distributions of Manduca sexta L. and Manduca quinquemaculata (Haworth) on tobacco

Attraction of the Bark Beetle ParasitoidRoptrocerus xylophagorum(Hymenoptera: Pteromalidae) to Host-Associated Olfactory Cues

Variability and genetic components of innate fruit odour recognition in a parasitoid of Drosophila

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