Introduced predator elicits population-specific responses from prey

Hooks, Alexandra P.; Padilla, Dianna K.

doi:10.1007/s10530-020-02376-5

Cited by 3 publications

(3 citation statements)

References 65 publications

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“…While this approach has been used to measure predator‐induced changes in shape for a wide range of organisms, such as fish (Arnett & Kinnison, 2016 ; Díaz‐Gil et al., 2020 ; Franssen, 2011 ), amphibians (Florencio et al., 2020 ; Reuben & Touchon, 2021 ; Ruehl et al., 2018 ) and snails (Hooks & Padilla, 2021 ; Solas et al., 2015 ; Terry & Duda, 2021 ), until recently, shape has rarely been assessed as a plastic trait in water fleas ( Daphnia species), an iconic organism for the study of size‐selective, predator‐induced phenotypic change. Instead, daphnid research has largely focused on scoring the production of inducible morphological defences, such as the head spikes of Daphnia pulex , called ‘neckteeth’, which develop in response to predator cues (kairomones) released from their midge larvae predators (Krueger & Dodson, 1981 ; Parejko & Dodson, 1991 ; Tollrian, 1993 ).…”

Section: Introductionmentioning

confidence: 99%

“…While this approach has been used to measure predatorinduced changes in shape for a wide range of organisms, such as fish (Arnett & Kinnison, 2016;Díaz-Gil et al, 2020;Franssen, 2011), amphibians (Florencio et al, 2020;Reuben & Touchon, 2021;Ruehl et al, 2018) and snails (Hooks & Padilla, 2021;Solas et al, 2015;Terry & Duda, 2021), until recently, shape has rarely been assessed as a plastic trait in water fleas (Daphnia species), an iconic organism for the study of size-selective, predator-induced phenotypic change.…”

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confidence: 99%

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Predator‐induced shape plasticity in Daphnia pulex

Paplauskas,

Morton,

Hunt

et al. 2024

Ecology and Evolution

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All animals and plants respond to changes in the environment during their life cycle. This flexibility is known as phenotypic plasticity and allows organisms to cope with variable environments. A common source of environmental variation is predation risk, which describes the likelihood of being attacked and killed by a predator. Some species can respond to the level of predation risk by producing morphological defences against predation. A classic example is the production of so‐called ‘neckteeth’ in the water flea, Daphnia pulex, which defend against predation from Chaoborus midge larvae. Previous studies of this defence have focussed on changes in pedestal size and the number of spikes along a gradient of predation risk. Although these studies have provided a model for continuous phenotypic plasticity, they do not capture the whole‐organism shape response to predation risk. In contrast, studies in fish and amphibians focus on shape as a complex, multi‐faceted trait made up of different variables. In this study, we analyse how multiple aspects of shape change in D. pulex along a gradient of predation risk from Chaoborus flavicans. These changes are dominated by the neckteeth defence, but there are also changes in the size and shape of the head and the body. We detected change in specific modules of the body plan and a level of integration among modules. These results are indicative of a complex, multi‐faceted response to predation and provide insight into how predation risk drives variation in shape and size at the level of the whole organism.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Predator‐induced shape plasticity in Daphnia pulex

Paplauskas,

Morton,

Hunt

et al. 2024

Ecology and Evolution

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“…Gastropods have been widely used to study adaptation in response to predation (Brookes & Rochette, 2007;Hooks & Padilla, 2021), with abiotic factors such as calcium concentration modulating this response through changes in shell morphology and behavior (Rundle et al, 2004;Bukowski & Auld, 2014). As such, they are a useful biological study model for addressing evolutionary responses to biological invasions.Amnicola limosus is a small dominant freshwater gastropod species with a wide geographical distribution in the USA and Canada (www.gbif.org/species/5192461).…”

Section: Introductionmentioning

confidence: 99%

Limited migration from physiological refugia constrains the rescue of native gastropods facing an invasive predator

Salamon,

Astorg,

Paccard

et al. 2023

Preprint

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Biological invasions have caused the loss of freshwater biodiversity worldwide. The interplay between adaptive responses and demographic characteristics is expected to be important for the resilience of populations to biological invasions, but the interaction between these factors is poorly understood. The native freshwater gastropod Amnicola limosus is distributed along spatial variation in impact from an invasive molluscivorous fish (Neogobius melanostomus), as well as in calcium concentration, which limits the distribution of this invader and thus provides refuges for the gastropods. We investigated if refuge populations could provide migrants to declining invaded gastropod populations through gene flow (i.e., demographic rescue), which could also help maintain genetic diversity (i.e., genetic rescue). We also tested for genetic adaptation of A. limosus to the invasive predator and the low calcium habitats. We conducted pooled whole-genome sequencing of twelve gastropod populations from the Upper St. Lawrence River, complemented with a laboratory reciprocal transplant of wild F0 A. limosus to measure survival and fecundity in treatments of water calcium concentration (low/high) and round goby cue (present/absent). We found that gene flow is restricted from the low-calcium uninvaded refugia towards high-calcium invaded populations, implying that the potential for demographic and genetic rescue is limited. We also detected signatures of divergent selection between habitat types and evidence of low fitness of individuals from refugia populations in both habitat types, which could be either a cause or consequence of the population structure between habitat types and highlights the potential conflict between demographic/genetic rescue and adaptation.

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Important mesopredator restricts feeding in response to risk cues from a new invasive predator

Diebboll

2024

Journal of Experimental Marine Biology and Ecology

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Introduced predator elicits population-specific responses from prey

Cited by 3 publications

References 65 publications

Predator‐induced shape plasticity in Daphnia pulex

Predator‐induced shape plasticity in Daphnia pulex

Limited migration from physiological refugia constrains the rescue of native gastropods facing an invasive predator

Important mesopredator restricts feeding in response to risk cues from a new invasive predator

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