Predators induce egg retention in prey

Montserrat, Marta; Bas, Cristina; Magalhães, Sara; Sabelis, Maurice W.; Roos, André M. de; Janssen, Arne

doi:10.1007/s00442-006-0527-8

Cited by 49 publications

(54 citation statements)

References 32 publications

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“…Our second prediction, that predation may create attractive cues, was confirmed by the Predator feeding on prey experiment. This result strongly contrasts with previous reports that diverse organisms avoid ovipositing where predators or their cues are present (Angelon and Petranka 2002; Binckley and Resitarits 2002, 2005, 2008, Orizaola and Braña 2003; Blaustein et al 2004; Arav and Blaustein 2006; Montserrat et al 2007; Silberbush and Blaustein 2008; Silberbush et al 2010). Though some investigations have found no avoidance of oviposition with predators (e.g., Orizaola and Braña 2003, Juliano et al 2010, Hurst et al 2010, reviewed by Vonesh and Blaustein 2010), finding preferential oviposition where predators have been active is a rarity (see Torre-Estrada et al.…”

Section: Discussioncontrasting

confidence: 99%

Attracted to the enemy: Aedes aegypti prefers oviposition sites with predator-killed conspecifics

et al. 2014

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Oviposition habitat choices of species with aquatic larvae is expected to be influenced by both offspring risk of mortality due to predation, and offspring growth potential. Aquatic predators may indirectly influence growth potential for prey by reducing prey density and, for filter feeding prey, by increasing bacterial food for prey via added organic matter (feces, partially eaten victims), creating the potential for interactive effects on oviposition choices. We tested the hypothesis that the mosquito Aedes aegypti preferentially oviposit in habitats with predatory Toxorhynchites larvae because of indirect effects of predation on chemical cues indicating bacterial abundance. We predicted that A. aegypti would avoid oviposition in sites with Toxorhynchites, but prefer to oviposit where bacterial food for larvae is abundant, and that predation by Toxorhynchites would increase bacterial abundances. Gravid A. aegypti were offered paired oviposition sites representing choices among: predator presence; the act of predation; conspecific density; dead conspecific larvae; and bacterial activity. Aedes aegypti preferentially oviposited in sites with T. theobaldi predation, and with killed conspecific larvae, but failed to detect preferences for other treatments. The antibiotic Tetracycline eliminated the strongest oviposition preference. Both predation by Toxorhynchites and killed larvae increased bacterial abundances, suggesting that oviposition attraction is cued by bacteria. Our results show the potential for indirect effects, like trophic cascades, to influence oviposition choices and community composition in aquatic systems. Our results suggest that predators like Toxorhynchites may be doubly beneficial as biocontrol agents because of the attraction of ovipositing mosquitoes to bacterial by-products of Toxorhynchites feeding.

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Section: Discussioncontrasting

confidence: 99%

Attracted to the enemy: Aedes aegypti prefers oviposition sites with predator-killed conspecifics

et al. 2014

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“…However, there were still a number of spider mite adults and eggs left on the leaf discs at the end of the performance experiment, suggesting that there was no shortage of the superior food source. It is also possible that the presence of thrips larvae induced egg retention in the predators (Faraji et al 2001; Montserrat et al 2007; de Almeida and Janssen 2013). …”

Section: Discussionmentioning

confidence: 99%

Predatory interactions between prey affect patch selection by predators

Choh

Sabelis

Janssen

2017

Behav Ecol Sociobiol

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When predators can use several prey species as food sources, they are known to select prey according to foraging efficiency and food quality. However, interactions between the prey species may also affect prey choice, and this has received limited attention. The effect of one such interaction, intraguild predation between prey, on patch selection by predators was studied here. The predatory mite Neoseiulus californicus preys on young larvae of the western flower thrips Frankliniella occidentalis and on all stages of the two-spotted spider mite Tetranychus urticae. The two prey species co-occur on several plant species, on which they compete for resources, and western flower thrips feed on eggs of the spider mites. A further complicating factor is that the thrips can also feed on the eggs of the predator. We found that performance of the predatory mite was highest on patches with spider mites, intermediate on patches with spider mites plus thrips larvae and lowest on patches with thrips larvae alone. Patch selection and oviposition preference of predators matched performance: predators preferred patches with spider mites over patches with spider mites plus thrips. Patches with thrips only were not significantly more attractive than empty patches. We also investigated the cues involved in patch selection and found that the attractiveness of patches with spider mites was significantly reduced by the presence of cues associated with killed spider mite eggs. This explains the reduced attractiveness of patches with both prey. Our results point at the importance of predatory interactions among prey species for patch selection by predators.Significance statementPatch selection by predators is known to be affected by factors such as prey quality, the presence of competitors and predators, but little is known on the effects of interactions among prey species present on patch selection. In this paper, we show that patch selection by a predator is affected by such interactions, specifically by the feeding of one prey species on eggs of the other.

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“…Thus, a reduction in oviposition may be one antipredator behavior for prey animals. It is reported that some females avoid ovipositing near their predators (Faraji et al 2001;Agarwala et al 2003;Nomikou et al 2003), and retain eggs inside of their body in the presence of predators (Montserrat et al 2007). For example, females of the phytophagous mite Tetranychus urticae have been reported to reduce oviposition in the presence of the predatory mite Phytoseiulus persimilis (Š kaloudová et al 2007), and to increase migration from a patch with predators to avoid predation (Choh and Takabayashi 2007).…”

Section: Introductionmentioning

confidence: 99%

Predation-related odours reduce oviposition in a herbivorous mite

2009

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When adult females of the herbivorous mite, Tetranychus urticae, were exposed to the predatory mite, Phytoseiulus persimilis, they laid fewer eggs than females that had not been exposed to P. persimilis when transferred onto a new leaf patch. However, when T. urticae females were exposed to either products of P. persimilis or artificially damaged conspecific eggs on a leaf patch, the number of T. urticae eggs on a new leaf patch did not differ significantly from the control. The reduced oviposition was neither due to the feeding activity on the leaf patch with P. persimilis nor to that on the new leaf patch. There was also no significant difference between the number of T. urticae eggs produced on a new leaf patch following exposure to the odours of a neighbouring leaf patch where there had previously been either P. persimilis or T. urticae adults. However, female T. urticae that had been exposed to odours from neighbouring leaf patches on which both T. urticae and P. persimilis had been placed produced significantly fewer eggs on a new leaf patch than those that had not been exposed to such odours. Neither odours from neighbouring intact leaf patches on which T. urticae eggs were preyed on by P. persimilis, nor odours from a neighbouring Parafilm patch on which T. urticae was preyed on by P. persimilis affected the oviposition of T. urticae. These data suggest that the presence of T. urticae, P. persimilis and a leaf patch are needed for the emission of odours to reduce oviposition in T. urticae.

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Predators induce egg retention in prey

Cited by 49 publications

References 32 publications

Attracted to the enemy: Aedes aegypti prefers oviposition sites with predator-killed conspecifics

Attracted to the enemy: Aedes aegypti prefers oviposition sites with predator-killed conspecifics

Predatory interactions between prey affect patch selection by predators

Predation-related odours reduce oviposition in a herbivorous mite

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