Proteomic changes associated with predator‐induced morphological defences in oysters

Evans, Tyler G.; Bible, Jillian M.; Maynard, Ashley; Griffith, Kaylee R.; Sanford, Eric; Kültz, Dietmar

doi:10.1111/mec.16580

Cited by 2 publications

(1 citation statement)

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“…Such predatorinduced defences are dependent upon several factors-including the genetic capacity of prey species to produce a phenotypic response (Tams et al, 2020), the magnitude of predation pressure, the types of predators and their cues, and associated costs and benefits to producing the defensive strategy (Harvell, 1990;Trussell & Smith, 2000;Weiss & Tollrian, 2018); all of which can be highly variable across space and time. Over the past few decades, researchers have developed theory (Tollrian & Harvell, 1999), studied the mechanisms (Harvell, 1986;Lively, 1986;Murua et al, 2014), and even uncovered the molecular basis of predatorinduced defences in some species (Evans et al, 2022;Kishida et al, 2007). Despite these advances, there are several knowledge gaps in our understanding of the spatio-temporal dynamics of predator-induced defences.…”

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confidence: 99%

Predator‐induced defences under tropicalisation: A biogeographic approach

Fenberg,

Beas‐Luna,

Igić

et al. 2023

Journal of Biogeography

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AimThe biogeography of predator‐induced defences is an understudied area of predator–prey dynamics. Range overlap with predators that induce the response and local demographics (e.g., prey abundances) are likely to be important factors for determining the biogeographic distribution of induced defences within species. However, with climate warming, range‐expanding warm‐water predators are increasingly preying upon temperate species. This is a consequence of a wider phenomenon known as tropicalisation. We aim to determine: (i) if individuals of a temperate barnacle with induced defences (‘bent morphs’) are primarily present where they co‐occur with range‐expanding warm‐water predators (muricid snails) and, (ii) if bent morphs are size‐structured within populations.LocationNorth‐eastern Pacific rocky intertidal zone (~26–40° N).TaxonTetraclita rubescens (Nilsson‐Cantell, 1931), Balanomorpha.MethodsWe use photoquadrats from sites across the range of T. rubescens to determine the biogeographic distribution of populations with bent morphs and to assess size‐structure. We use a combination of field surveys, literature, and museum occurrences to assess range overlap between cool and warm‐water predators of T. rubescens and their association with populations with bent morphs and abundance patterns of T. rubescens.ResultsBent morphs are commonly found within the equatorward portion of the species' range (where abundances are highest), in populations overlapping with range‐expanding warm‐water predators. Bent morphs primarily occur within the smaller size classes.Main conclusionsTo be partly resilient to the effects of tropicalisation, temperate prey must acclimatise/adapt to altered predator–prey dynamics. Predator‐induced defences are one way to do this. We show that bent morphs within a temperate prey species (T. rubescens) are largely restricted to populations that overlap with large‐bodied and range‐expanding warm‐water predators. This is evidence for the partial resilience of T. rubescens to tropicalisation and provides the rationale for further exploration of the eco‐evolutionary consequences of tropicalisation in this study system and others.

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