Susceptibility of non-indigenous ascidian species in British Columbia (Canada) to invertebrate predation

Epelbaum, A.; Pearce, Christopher M.; Barker, D. J.; Paulson, Alan C.; Therriault, Thomas W.

doi:10.1007/s00227-009-1172-7

Cited by 40 publications

(22 citation statements)

References 29 publications

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“…Natural control mechanisms negate the need for costly physical and chemical treatments, and are safer for the health and wellbeing of the shellfish and the growers. Examples from oyster culture include the use of periwinkles (Enright et al 1983;Cigarria et al 1998), crabs (Ross et al 2004) and sea urchins (Lodeiros and Garcı´a 2004;Ross et al 2004;Epelbaum et al 2009). However, ensuring mobile organisms such as these remain on culture infrastructure for extended time periods is challenging, particularly in mussel culture (Comeau et al 2012).…”

Section: Biological Controlmentioning

confidence: 99%

“…However, ensuring mobile organisms such as these remain on culture infrastructure for extended time periods is challenging, particularly in mussel culture (Comeau et al 2012). This may require modification of culture techniques such as the addition of protective cages around mussel socks for retention (Epelbaum et al 2009). The use of biocontrol in large scale shellfish culture is therefore tenuous.…”

Section: Biological Controlmentioning

confidence: 99%

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The impact and control of biofouling in marine aquaculture: a review

et al. 2012

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Biofouling in marine aquaculture is a specific problem where both the target culture species and/or infrastructure are exposed to a diverse array of fouling organisms, with significant production impacts. In shellfish aquaculture the key impact is the direct fouling of stock causing physical damage, mechanical interference, biological competition and environmental modification, while infrastructure is also impacted. In contrast, the key impact in finfish aquaculture is the fouling of infrastructure which restricts water exchange, increases disease risk and causes deformation of cages and structures. Consequently, the economic costs associated with biofouling control are substantial. Conservative estimates are consistently between 5-10% of production costs (equivalent to US$ 1.5 to 3 billion yr 71 ), illustrating the need for effective mitigation methods and technologies. The control of biofouling in aquaculture is achieved through the avoidance of natural recruitment, physical removal and the use of antifoulants. However, the continued rise and expansion of the aquaculture industry and the increasingly stringent legislation for biocides in food production necessitates the development of innovative antifouling strategies. These must meet environmental, societal, and economic benchmarks while effectively preventing the settlement and growth of resilient multi-species consortia of biofouling organisms.

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Section: Biological Controlmentioning

confidence: 99%

Section: Biological Controlmentioning

confidence: 99%

The impact and control of biofouling in marine aquaculture: a review

et al. 2012

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“…are conspicuous on subtidal rock walls. Red urchins attain large sizes (test diameter >18 cm) and eat primarily kelp (Vadas 1977, Britton-Simmons et al 2009), but will feed opportunistically on invertebrates (Duggins 1981, Epelbaum et al 2009). Notably, their removal does not lead to changes in kelp communities (Carter et al 2007) observed in similar experiments on shallow reefs elsewhere (Duggins 1980).…”

Section: Introductionmentioning

confidence: 99%

Consumers mediate natural variation between prey richness and resource use in a benthic marine community

Elahi¹,

Sebens²

2012

Mar. Ecol. Prog. Ser.

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Space is the limiting resource for sessile organisms on marine rocky substrata, and the availability of space is decreased by recruitment and growth but increased through senescence, physical disturbance and consumption. In the present study, we examined whether consumers mediate variation in the relationship between prey richness and resource (space) use in subtidal epifaunal communities. First, we used surveys to identify relationships between prey richness, consumer richness, consumer identity and consumer abundance with available space. As predicted, available space was inversely correlated with sessile prey richness and positively correlated with consumer richness. However, a model selection approach identified the abundance of sea urchins and chitons specifically as the best predictors of available space, suggesting that the proportion of available space is a reasonable indicator of recent disturbance. Next, we manipulated urchin density in the field to test the hypothesis that urchins control the structure of this community by grazing sessile taxa and facilitating smaller consumers. Diet analyses and structural equation models together indicate that urchins generate available space directly by consuming macroscopic sessile prey, and indirectly by facilitating chitons, which maintain patches of space free of microscopic algae and recruits of larger sessile taxa. The significant interaction between prey richness and experimental urchin density on available space suggests that prey richness may buffer the impacts of urchin grazing. More generally, we highlight the need to study the effects of species richness on the structure of communities in the context of relevant ecological processes.KEY WORDS: Space · Diversity · Strongylocentrotus · Tonicella · Subtidal · EpifaunaResale or republication not permitted without written consent of the publisher

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“…A successful agent species must have life history traits suitable for the habitat and target invasive species as its prey [43]. This study demonstrated that the whelk Reishia clavigera preyed on the invasive Xenostrobus securis and Mytilopsis sallei more often than on the native Brachidontes variabilis .…”

Section: Resultsmentioning

confidence: 99%

Deterred but not preferred: Predation by native whelk Reishia clavigera on invasive bivalves

2018

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This study tested the potential bio-control role of the common native predatory whelk Reishia clavigera on the invasive bivalves Xenostrobus securis and Mytilopsis sallei and the native Brachidontes variabilis in Hong Kong. Predation experiments were conducted in the laboratory under salinity levels of 22‰ and 32‰, as well as under field conditions. The results indicate that the invasive bivalves are more vulnerable to predation than the native bivalve in environments with high salinity, whereas environments with moderately low salinity (22‰) may reduce predation. Because R. clavigera did not show clear prey preference, the low survival of the invasive species might be due to a lack of effective anti-predatory defenses under experimental conditions. These findings could explain the high abundance of the invasive bivalves in disturbed environments in Hong Kong where predation appears to be lower.

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Susceptibility of non-indigenous ascidian species in British Columbia (Canada) to invertebrate predation

Cited by 40 publications

References 29 publications

The impact and control of biofouling in marine aquaculture: a review

The impact and control of biofouling in marine aquaculture: a review

Consumers mediate natural variation between prey richness and resource use in a benthic marine community

Deterred but not preferred: Predation by native whelk Reishia clavigera on invasive bivalves

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