The Impacts of a Nonindigenous Marine Predator in a California Bay

Grosholz, Edwin D.; Ruiz, Gregory M.; Dean, Cheryl A.; Shirley, Kim A.; Maron, John L.; Connors, Peter G.

doi:10.1890/0012-9658(2000)081[1206:tioanm]2.0.co;2

Cited by 333 publications

(238 citation statements)

References 84 publications

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“…However, when alternate prey was present adult predation rates increased dramatically due to consumption of Hemigrapsus. Previous work by Grosholz et al (2000) found similar trends with adult Carcinus housed with a single prey crab consuming Hemigrapsus at a much higher frequency than juvenile conspecifics. Whether observed differences in predation rates are due to predator preference or differences in ease of capture between species, cannibalism rates of adult Carcinus on juveniles were very low in the presence or absence of similar alternate prey.…”

Section: Discussionsupporting

confidence: 73%

“…Harbor in 1993, since which time it has altered community composition and significantly reduced the abundance of some native infauna and epifauna (Grosholz et al 2000). The other locations related to this study are Tomales Bay (38°10'16.60" N 122°54'45.98" W) and Elkhorn Slough (36°49'00.61" N 121°44'49.21" W).…”

Section: Study Sitesmentioning

confidence: 94%

“…Hemigrapsus is a species of shore crab native to the Pacific Coast of North America. Adults are similar in size to juvenile Carcinus and are commonly preyed upon by Carcinus (Grosholz et al 2000, de Rivera et al 2011). All specimens were collected from Bodega Harbor and were housed with similarly sized conspecifics in holding tanks at the University of California Davis, Bodega Marine Laboratory.…”

Section: Collection and Care Of Crabsmentioning

confidence: 99%

“…Nutricola are small (< 6 mm width) softsediment bivalves native to western North America and are a common prey item for all sizes of Carcinus (Grosholz et al 2000). Fifty Nutricola with shell length 2-3 mm were added to each enclosure.…”

Section: Experiments 3: Juvenile Foraging In the Presence Of An Adultmentioning

confidence: 99%

“…Impacts of aquatic invaders can result in huge economic costs through damage to infrastructure (Galil & Zenetos 2002, Leppäkoski et al 2002, Davidson & de Rivera 2012 and predation on fishery species (Glude 1955, Travis 1993, Jamieson et al 1998. Biological invasions have also triggered shifts in community structure, size structure of native species, and in extreme cases local extinctions (Zaret & Paine 1973, Goldschmidt et al 1993, Grosholz et al 2000, Grosholz 2002, Blackburn et al 2004. Numerous laws, educational efforts, techniques and technologies have been developed to prevent the further distribution of propagules (Hewitt & Campbell 2007, Tsolaki & Diamadopoulos 2010, Cooper et al 2012.…”

Section: Introduction: Responses Of Introduced Species To Lethal Biotmentioning

confidence: 99%

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Responses of Aquatic Non-Native Species to Novel Predator Cues and Increased Mortality

Turner¹

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Lethal biotic interactions strongly influence the potential for aquatic non-native species to establish and endure in habitats to which they are introduced. Predators in the recipient area, including native and previously established non-native predators, can prevent establishment, limit habitat use, and reduce abundance of non-native species.Management efforts by humans using methods designed to cause mass mortality (e.g., trapping, biocide applications) can reduce or eradicate non-native populations. However, the impacts of predator and human induced mortality may be mitigated by the behavior or population-level responses of a given non-native species.My dissertation examined the responses of non-native aquatic species to the risk of predation by novel (i.e., no previous exposure) predators in the recipient community Increases in recruitment rates can occur as a result of efforts to remove non-native species. This increase in recruitment can result in overcompensation, but more commonly results in compensation, where recruitment rates increase relative to pre-removal recruitment but does not result in in the population's abundance exceeding pre-removal iv levels. However, a detailed and accurate prediction of the response of a population to harvest is time consuming and data intensive. This is not feasible for most efforts to eradicate non-native species, which have the greatest chance of success when enacted rapidly after detection. For my final chapter, I performed a literature review and accompanying statistical analysis to determine if typically available information related to the removal effort (site size, site connectivity, and removal technique) could be used to determine increased risk of compensation for a given effort to remove aquatic invasive species. Compensation was closely linked to unsuccessful removal efforts and was observed only among efforts utilizing physical removal methods. However, the frequency with which compensation occurred varied with the exact technique employed, occurring most frequently in removal utilizing electrofishing. Additionally, evidence of compensation was more frequent among larger removal areas with variable connectivity.While other predictors (temperature, effort, etc) might add to the predicative power, the findings of the review provide criteria for managers to determine the relative risk of compensation prior to the start of removal.Further understanding of how invasive species respond to lethal biotic interactions, including anthropogenically mediated control measures, can aid in assessing the risk of invasion for a given species and inform managers of the risk of complications resulting from removal efforts. While inducible defenses may contribute to the long-term success of an introduced species in their recipient range, my findings did not support the idea that inducible defenses triggered by predator cues contributed to their initial introduction in this case. However, research on other non-native species and offspring of

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Section: Discussionsupporting

confidence: 73%

Section: Study Sitesmentioning

confidence: 94%

Section: Collection and Care Of Crabsmentioning

confidence: 99%

Section: Experiments 3: Juvenile Foraging In the Presence Of An Adultmentioning

confidence: 99%

Section: Introduction: Responses Of Introduced Species To Lethal Biotmentioning

confidence: 99%

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Responses of Aquatic Non-Native Species to Novel Predator Cues and Increased Mortality

Turner¹

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Environmental Effects

Iglesias

Tercero

Simas

et al. 2018

Wave and Tidal Energy

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New invasive predator reduces the abundance of native prey in a cold‐temperate marine fouling community

Battini

Giachetti

Castro

et al. 2021

Aquatic Conservation

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Invasive species threaten the conservation of marine environments, and urgent management strategies are needed to prevent their introduction, establishment and spread. Specifically, marine invasive predators destabilize ecological interactions and alter community structure and function. However, most of the evidence showing the effect of these predators is restricted to a few species and regions, while for others the information remains scarce. This study experimentally evaluated the ecological effects of the sea slug Pleurobranchaea maculata, a recently introduced invasive predator, on the fouling communities of a cold‐temperate port in the South‐western Atlantic. The results show that increasing predation pressure reduces significantly the abundance of sea anemones, which are among the preferred prey items. This study reveals new evidence to help better understand the effects of P. maculata on the biological communities of a recently invaded region. Furthermore, it provides the first experimental evidence supporting the hypothesis that marine invasive predators can induce a significant decrease in the abundance of native species in benthic communities of cold‐temperate marine environments in the South‐western Atlantic.

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The Impacts of a Nonindigenous Marine Predator in a California Bay

Cited by 333 publications

References 84 publications

Responses of Aquatic Non-Native Species to Novel Predator Cues and Increased Mortality

Responses of Aquatic Non-Native Species to Novel Predator Cues and Increased Mortality

Environmental Effects

New invasive predator reduces the abundance of native prey in a cold‐temperate marine fouling community

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