Female mosquitoes disperse further when they develop under predation risk

Alcalay, Yehonatan; Tsurim, Ido; Ovadia, Ofer

doi:10.1093/beheco/ary113

Cited by 16 publications

(16 citation statements)

References 70 publications

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“…One of many examples is found in the crucian carp ( Carassius carassius ), which develops an increased deeper body morphology when exposed to piscivorous fishes, an inducible morphological defense against gape‐limited predators (Brönmark & Miner, ). An induced response can be found also in the mosquito Culex pipiens , in which individuals that developed under predation risk are larger in size and disperse further (Alcalay, Tsurim, & Ovadia, ). Predator‐induced phenotypic changes are not limited to the individuals that directly experience the predation risk, but they can also arise in the offspring via maternal effects (Mousseau & Fox, ; Räsänen & Kruuk, ).…”

Section: Introductionmentioning

confidence: 99%

Maternal predator‐exposure affects offspring size at birth but not telomere length in a live‐bearing fish

Monteforte

Cattelan

Morosinotto

et al. 2020

Ecology and Evolution

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The perception of predation risk could affect prey phenotype both within and between generations (via parental effects). The response to predation risk could involve modifications in physiology, morphology, and behavior and can ultimately affect long‐term fitness. Among the possible modifications mediated by the exposure to predation risk, telomere length could be a proxy for investigating the response to predation risk both within and between generations, as telomeres can be significantly affected by environmental stress. Maternal exposure to the perception of predation risk can affect a variety of offspring traits but the effect on offspring telomere length has never been experimentally tested. Using a live‐bearing fish, the guppy (Poecilia reticulata), we tested if the perceived risk of predation could affect the telomere length of adult females directly and that of their offspring with a balanced experimental setup that allowed us to control for both maternal and paternal contribution. We exposed female guppies to the perception of predation risk during gestation using a combination of both visual and chemical cues and we then measured female telomere length after the exposure period. Maternal effects mediated by the exposure to predation risk were measured on offspring telomere length and body size at birth. Contrary to our predictions, we did not find a significant effect of predation‐exposure neither on female nor on offspring telomere length, but females exposed to predation risk produced smaller offspring at birth. We discuss the possible explanations for our findings and advocate for further research on telomere dynamics in ectotherms.

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Section: Introductionmentioning

confidence: 99%

Maternal predator‐exposure affects offspring size at birth but not telomere length in a live‐bearing fish

Monteforte

Cattelan

Morosinotto

et al. 2020

Ecology and Evolution

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“…Movements from natal areas into habitats that provide enhanced foraging opportunities are common in many species, and this can have considerable social, ecological and evolutionary consequences (Weiß, Kulik, Ruiz‐Lambides, & Widdig, ). However, this natal dispersal can have considerable costs and tends to exist in trade‐offs with increased predation risk (Alcalay, Tsurim, & Ovadia, ; Halpin, ). Dispersal involves the movement of individuals away from others, such as siblings, who are left behind in the original area; unlike migration, dispersers do not necessarily return to that area (Schwarz & Bairlein, ; Semlitsch, ).…”

Section: Introductionmentioning

confidence: 99%

Dispersal strategies of juvenile pike (Esox luciusL.): Influences and consequences for body size, somatic growth and trophic position

Nyqvist

Gozlan

Beaumont

et al. 2019

Ecology of Freshwater Fish

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Individual variability in dispersal strategies, where some individuals disperse and others remain resident, is a common phenomenon across many species. Despite its important ecological consequences, the mechanisms and individual consequences of dispersal remain poorly understood. Here, riverine Northern pike (Esox lucius) juveniles (age 0+ (young‐of‐the‐year) and 1+ years) were used to investigate the influence of body size and trophic position (at capture) on the dispersal from off‐channel natal habitats and the subsequent consequences for body sizes, specific growth rate and trophic position (at recapture). Individuals that dispersed into the river (“dispersers”) were not significantly different in body size than those remaining on nursery grounds (“stayers”). For trophic position, 0+ dispersers were of significantly lower trophic position than stayers, but with this not apparent in the 1+ fish. Following dispersal into the river, the dispersers grew significantly faster than stayers and, on recapture, were significantly larger, but with no significant differences in their final trophic positions. Early dispersal into the river was, therefore, not associated with early dietary shifts to piscivory and the attainment of larger body sizes of individuals whilst in their natal habitats, contrary to prediction. These results suggest that despite an increasing risk of mortality for individuals dispersing early from natal areas, there are long‐term benefits via elevated growth rates and, potentially, higher fitness. Such early dispersal behaviour could be driven by early competitive displacement.

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“…Nowadays, it is highly abundant in both natural and artificial water bodies in Israel (I. Tsurim, personal observation). Fish presence or cues can cause modifications in the life history and behaviour of C. pipiens during the larval and adult stages (Silberbush et al, 2015;Alcalay et al, 2018). Silberbush, unpublished).…”

Section: Study Systemmentioning

confidence: 99%

“…Silberbush, unpublished). Fish presence or cues can cause modifications in the life history and behaviour of C. pipiens during the larval and adult stages (Silberbush et al, 2015;Alcalay et al, 2018). All of this implies that both mosquito species can detect the presence of this predatory fish in the aquatic habitat.…”

Section: Study Systemmentioning

confidence: 99%

Multi‐scale oviposition site selection in two mosquito species

Alcalay

Tsurim

Ovadia

2018

Ecological Entomology

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1. In organisms characterised by complex life cycles, habitat selection often occurs at multiple spatial scales. For instance, female mosquitoes searching for an appropriate aquatic habitat to oviposit their eggs should also consider the characteristics of the terrestrial landscape in which it is embedded.2. In this study, a field experiment was conducted to test for multi-scale oviposition site selection in two mosquito species. Artificial pools were placed in two adjacent landscapes, olive plantations and a citrus orchard, mainly differing in their blooming periods and nectar availability. Pools were organised in three pairs: predatory caged fish were present in both pools, in one pool, or in none.3. Early during the season, most of the egg rafts were laid by Culiseta longiareolata females in pools located within the blooming citrus orchard. When blooming shifted to the olive plantation, C. longiareolata become opportunistic. Culex pipiens females appeared later on during the season, when egg rafts of C. longiareolata were scarce, and they exhibited a higher selectivity to the olive plantation, although its blooming ended. In addition, the selectivity of C. pipiens to fish-free pools was stronger than that of C. longiareolata.4. Culex pipiens was more selective, possibly due to its high dispersal ability, which can lower movement cost and enhance the ability to gather environmental information. A trade-off among gonotrophic cycles, combined with a shorter breeding season and limited recognition ability of the predatory fish may have reduced C. longiareolata selectivity. These differential oviposition patterns can strongly affect the population and community dynamics of both species.

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Female mosquitoes disperse further when they develop under predation risk

Cited by 16 publications

References 70 publications

Maternal predator‐exposure affects offspring size at birth but not telomere length in a live‐bearing fish

Maternal predator‐exposure affects offspring size at birth but not telomere length in a live‐bearing fish

Dispersal strategies of juvenile pike (Esox luciusL.): Influences and consequences for body size, somatic growth and trophic position

Multi‐scale oviposition site selection in two mosquito species

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