Deterrence of repeated oviposition by fruit-marking pheromone inCeratitis capitata (Diptera: Tephritidae)

Prokopy, Ronald J.; Ziegler, James R.; Wong, Tim T. Y.

doi:10.1007/bf00988260

Cited by 102 publications

(76 citation statements)

References 11 publications

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“…The presence of such a pheromone may have several effects on alighting females, including a reduction of PROKOPY ROITBERG the propensity to oviposit (163,176). There exists, however, a dynamic threshold (affected by fruit size and ripeness) at which the propensity to exploit preexisting punctures is balanced by the propensity to refrain from risking negative effects of competition with existing occupants (160,162).…”

Section: Variation Among Studies In Findings On Joining and Avoidingmentioning

confidence: 96%

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JOINING ANDAVOIDANCEBEHAVIOR INNONSOCIALINSECTS

Prokopy

Roitberg

2001

Annu. Rev. Entomol.

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153

110

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Groups of two or more consexual conspecific adults of many kinds of nonsocial insects have been observed to form at feeding, mating, ovipositional, or sheltering sites. Conversely, adults of these same insects have been observed to avoid joining consexual conspecifics (or their progeny) and to place themselves (or their progeny) at some distance that results in spacing. Examples from various taxa illustrate that mechanisms underlying joining or avoidance behavior differ among species, as do types of benefits and costs to individuals who decide to join or avoid others. Moreover, within a given species, the decision to join or avoid others can be affected markedly by the physiological and informational state of the individual and by contextual response thresholds to resource availability. Decisions that benefit the individual may or may not affect the group in terms of total reproductive output.

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Section: Variation Among Studies In Findings On Joining and Avoidingmentioning

confidence: 96%

“…Following oviposition, medfly females deposit a host-marking pheromone by dragging the ovipositor on the fruit surface (176). The presence of such a pheromone may have several effects on alighting females, including a reduction of PROKOPY ROITBERG the propensity to oviposit (163,176).…”

Section: Variation Among Studies In Findings On Joining and Avoidingmentioning

confidence: 99%

JOINING ANDAVOIDANCEBEHAVIOR INNONSOCIALINSECTS

Prokopy

Roitberg

2001

Annu. Rev. Entomol.

Self Cite

153

110

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“…Not only do females of these species often express a preference for parasitized fruit, but they deposit clutches directly into previously established egg-laying cavities (Papaj et al 1989(Papaj et al , 1992Papaj 1993Papaj , 1994Lalonde and Mangel 1994;Papaj and Messing 1996). Cavities in the field have been estimated to contain as many as 20 clutches (Back and Pemberton 1915;Papaj, unpublished observations), even though females engage in fruit-marking behavior which has been shown in at least one species to result in deposition of a pheromone that deters egg-laying (Prokopy et al 1978;Papaj et al 1992). Given the prominence of theoretical and empirical studies of superparasitism in behavioral ecology (reviewed in Godfray 1994), such seemingly paradoxical behavior demands close scrutiny.…”

Section: Introductionmentioning

confidence: 97%

Why walnut flies superparasitize: time savings as a possible explanation

Papaj¹,

Alonso-Pimentel

1997

Oecologia

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This study evaluated a possible fitness advantage, specifically time savings, that might account for an unusual propensity in walnut flies (Rhagoletis spp.) to superparasitize their walnut hosts and to place eggs into existing egg-laying cavities. The first part of this study demonstrated that, in laboratory assays, females of two walnut fly species, R. boycei and R. juglandis, save time when cavities are reused and that in R. juglandis, where it was examined in detail with in vivo staining of eggs, time saving was not an artifact of differences in the size of clutches deposited at new versus existing sites. We further demonstrated that time savings reflected a reduction in the time required to generate the cavity itself. In the second part of the study, we evaluated the possibility that, in the field, time saved by reusing existing cavities is nullified by extra time spent mating associated with a previously described tendency for males to guard these cavities. Field observations of R. juglandis indicated that use of existing sites was, as expected, associated with increased mating. Yet, despite the added time spent mating, in observations of similar length females attempting to lay eggs at existing sites deposited clutches more often than females attempting to lay eggs at new sites. We discuss these results in the context of the more common pattern of superparasitism avoidance observed in host-specific insects.

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“…Neuronal inputs arising from the chemosensory system and related to taste and olfaction lead to control of various behaviours such as identification and localisation of different host plants, release of the HMP, male aggregation and mating (Prokopy et al 1978;Jang et al 1998). In particular during oviposition, insects discriminate among different host plants at short distance by olfactory and visual stimuli (colour and shape of the fruit), then touch the fruit with the tarsal sensilla, which regulate the first phase of feeding behaviour.…”

Section: Introductionmentioning

confidence: 99%

Morphological and electrophysiological analysis of tarsal sensilla in the medfly Ceratitis capitata (Wiedemann, 1824) (Diptera: Tephritidae)

Loy

Solari

Isola

et al. 2016

Italian Journal of Zoology

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The Mediterranean fruit fly, Ceratitis capitata (Wiedemann, 1824) (Diptera: Tephritidae), is a polyphagous pest in horticulture, mainly targeting pomaceous and citrus fruits. To gain better knowledge about its chemosensory system related to taste, essential for behavioural strategies and localisation of host plants, we examined the tarsal external morphology by highresolution scanning electron microscopy, focusing on sensilla. Numerous trichoid and chaetica sensilla, related to taste and mechanoreceptor systems, and other types of sensilla are present in tarsal segments. The responses of specific trichoid chemosensilla were also studied through electrophysiological experiments by stimulation with sodium chloride, fructose and four bitter stimuli. Electrophysiological data allowed us to distinguish three types of different neurons: high ("H"), middle ("M") and small ("S"). Increasing concentrations of sodium chloride enhanced the activity of H cells, while fructose boosted M cells activity. On the contrary, S cells showed no increase in spike activity after stimulation with these substances. Bitter stimuli induced no significant response on these cells. Behavioural assays showed no statistical difference among the responses to sugars, bitter substances and citric acid. Our results on taste stimuli will be useful in increasing knowledge of Ceratitis chemoreception, fundamental in new integrated pest management.

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Deterrence of repeated oviposition by fruit-marking pheromone inCeratitis capitata (Diptera: Tephritidae)

Cited by 102 publications

References 11 publications

JOINING ANDAVOIDANCEBEHAVIOR INNONSOCIALINSECTS

JOINING ANDAVOIDANCEBEHAVIOR INNONSOCIALINSECTS

Why walnut flies superparasitize: time savings as a possible explanation

Morphological and electrophysiological analysis of tarsal sensilla in the medfly Ceratitis capitata (Wiedemann, 1824) (Diptera: Tephritidae)

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