Ovipositional Responses of Two &lt;I&gt;Culex&lt;/I&gt; (Diptera: Culicidae) Species to Larvivorous Fish

Walton, William E.; Dam, Alex R. Van; Popko, David A.

doi:10.1603/033.046.0612

Cited by 32 publications

(24 citation statements)

References 23 publications

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“…adult body size, larval period, and emergence rate) in two mosquito species. These patterns were consistent with the risk of predation by fish in their natural habitats (Van Dam & Walton, 2008), and a similar result was obtained from a field study (Walton et al, 2009). This is consistent with the findings of similar previous studies using chemical cues obtained from predatory notonectid bugs (Blaustein et al, 2004) and anuran larvae (Mokany & Shine, 2003).…”

Section: Discussionsupporting

confidence: 91%

Differential responses to predator cues between two mosquito species breeding in different habitats

Ohba

Ohtsuka

Sunahara

et al. 2012

Ecological Entomology

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1. Natural selection favours females who can correctly assess the predation risk and hence avoid high-risk oviposition sites and reduce the mortality rate of their offspring. In spite of the potential significance of such behaviour, relatively few studies have assessed the relationship between oviposition behaviour and predation risk.2. The present study aimed to determine the sublethal effects of predators on oviposition site selection by gravid females, the foraging activity of larvae, and the life history traits of two mosquito species that breed in different habitats, Aedes albopictus Skuse (container breeder) and Culex tritaeniorhynchus Giles (wetland breeder).3. Female C. tritaeniorhynchus avoided laying eggs at oviposition sites in the presence of a predator cue. In contrast, female A. albopictus laid eggs in both the absence and presence of the predator cue.4. To examine the effects of predator cues on larval behaviour, experiments were conducted in the absence and presence of a predator cue. Although larval activity was lower in the presence of the predator cue than that in its absence in both species, C. tritaeniorhynchus responded to the predator cue more strongly than A. albopictus. Female A. albopictus that had been reared with caged predators exhibited an extended larval development period, whereas the adult C. tritaeniorhynchus reared in the presence of predators were smaller than those reared in their absence.5. This finding might explain why C. tritaeniorhynchus avoid laying eggs in predator-conditioned water, for example to increase the fitness of their offspring, but A. albopictus either cannot detect predator cues or are not sensitive to them.

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Section: Discussionsupporting

confidence: 91%

Differential responses to predator cues between two mosquito species breeding in different habitats

Ohba

Ohtsuka

Sunahara

et al. 2012

Ecological Entomology

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“…This has been well demonstrated in predatorÐprey studies where female mosquitoes avoid habitats that have cues from a feeding predator (Walton et al 2009). It is suspected that chemical cues are the likely mechanism by which female mosquitoes avoid these habitats with predators (Blaustein and Chase 2005).…”

Section: Discussionmentioning

confidence: 69%

Malathion Influences Competition Between Aedes albopictus and Aedes japonicus

et al. 2010

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Competitive interactions may facilitate or repel invaders into new communities, and these interactions may depend on other environmental conditions such as the presence of pesticides. Malathion is widely used in controlling agricultural pests and mosquitoes worldwide. Small amounts of malathion, previously considered inconsequential, may in fact increase in lethality when combined with biotic stressors in aquatic systems. We tested whether low concentrations of malathion (0.11 ppm) that are often detected in aquatic systems, affect competition between two invasive mosquito species Aedes albopictus (Skuse) and Aedes japonicus Theobald. There were no survivors of Ae. japonicus larvae in malathion. There was a significant negative effect of Ae. japonicus density on Ae. albopictus survival, but this effect was absent in the presence of malathion. There was also a moderate negative effect of Ae. japonicus density on Ae. albopictus female size, but this effect was absent in the presence of malathion. These findings indicate that pesticide-mediated alterations in competition and species-specific differences in susceptibility to pesticides could play a role in enhancing invasive potential of Ae. albopictus.

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“…Several Culex mosquitoes avoid ovipositing in pools that have the aquatic predator Notonecta irrorata (Uhler) and continue to avoid them for ϳ2 wk, even those pools that formerly had N. irrorata (Blaustein and Chase 2005). Adult females of the mosquito Culex tarsalis (Coquillett) avoid pools that have predationrisk cues from larvivorous Þsh, such as the mosquitoÞsh Gambusia affinis (Baird and Girard) (Walton et al 2009). Angelon and Petranka (2002) showed the Cx.…”

Section: Discussionmentioning

confidence: 99%

Behavioral Differences of Invasive Container-Dwelling Mosquitoes to a Native Predator

Kesavaraju¹,

Khan

Gaugler

2011

jnl. med. entom.

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Aquatic prey show behavioral modifications in the presence of predation-risk cues that alleviate their risk from predation. Aedes albopictus (Skuse), Aedes japonicus (Theobald), and Culex pipiens L. are invasive mosquitoes in North America, and their larvae are prey for the native mosquito predator, Toxorhynchites rutilus (Coquillett). Ae. albopictus and Ae. japonicus are recent invaders, whereas Cx. pipiens has been in the United States for >100 yr. In the presence of predation-risk cues from Tx. rutilus larvae, Cx. pipiens larvae increased the time spent resting at the surface (least risky behavior) more than the other prey species. Ae. japonicus larvae increased resting at the surface of the containers more than Ae. albopictus larvae in the presence of predation-risk cues. Cx. pipiens larvae spent more time motionless at the surface even in the absence of predation-risk cues when compared with the other species, indicating that Cx. pipiens larvae are the least vulnerable prey. As compared with the other prey species, Ae. albopictus larvae exhibited more high-risk behaviors both in the presence and absence of predation-risk cues, indicating that they are the most vulnerable prey. Ae. albopictus is the superior competitor; however, predation by Tx. rutilus larvae may prevent competitive exclusion by Ae. albopictus and promote coexistence among the three prey species.

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Ovipositional Responses of Two <I>Culex</I> (Diptera: Culicidae) Species to Larvivorous Fish

Cited by 32 publications

References 23 publications

Differential responses to predator cues between two mosquito species breeding in different habitats

Differential responses to predator cues between two mosquito species breeding in different habitats

Malathion Influences Competition Between Aedes albopictus and Aedes japonicus

Behavioral Differences of Invasive Container-Dwelling Mosquitoes to a Native Predator

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