The native rock shrimp Rhynchocinetes typus as a biological control of fouling in suspended scallop cultures

Dumont, Clément P.; Urriago, Juan Diego; Abarca, Alejandro; Gaymer, Carlos F.; Thiel, Martín

doi:10.1016/j.aquaculture.2009.03.044

Cited by 31 publications

(25 citation statements)

References 20 publications

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“…This may be of particular importance in marine systems that still have a high diversity of predators (i.e., that have not yet been severely impacted by human activities) and where mechanisms of biotic resistance may only be compromised during unpredictable natural disturbance events. Considering propagule pressure as a primary controller of invasions (Drake and Lodge 2006;Simberloff 2009), our results suggest that within a management context, limiting the supply of propagules from artificial structures could be an effective strategy for reducing the risk of invasion into natural benthic communities (Dumont et al 2009). The most effective and desirable means to prevent species invasions, however, is the conservation of natural benthic communities with a high diversity of native predators (see also Hulme 2006).…”

Section: Discussionmentioning

confidence: 99%

“…Open cages (10 9 5 cm apertures on each side) were used to test for cage artifacts while panels without cages were exposed to predators (3 replicate panels per each treatment per site). Recruitment panels both in benthic habitats and in the water column were attached in horizontal position, because in a previous study, we observed that recruits of the ascidians C. intestinalis and P. chilensis were more abundant on the underside of artificial structures (e.g., bottom of scallop culture cages) (Dumont et al 2009). Ascidian larvae preferentially settle on shaded substratum (Miller and Etter 2008), which had also been confirmed for C. intestinalis (Rius et al 2010).…”

Section: Invasibilitymentioning

confidence: 99%

“…Populations only started to proliferate on suspended artificial structures during the 1990s with the growing scallop aquaculture; at the same time the dense populations of C. intestinalis on suspended structures were increasingly considered as a fouling pest (Uribe and Etchepare 2002). Indeed, C. intestinalis and the native ascidian Pyura chilensis largely dominate the fouling biomass on suspended scallop cultures in northern Chile (Dumont et al 2009). Despite these growing populations on artificial structures, C. intestinalis, which is primarily a benthic ascidian (rocky bottoms, seagrasses) in its native range in Northern Europe (Dybern 1965), is not found in natural benthic habitats in northern Chile.…”

Section: Introductionmentioning

confidence: 99%

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Predation contributes to invasion resistance of benthic communities against the non-indigenous tunicate Ciona intestinalis

2011

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Marine anthropogenic structures offer novel niches for introduced species but their role in the subsequent invasion to natural habitats remains unknown. Upon arrival in new environments, invaders must overcome biotic resistance from native competitors and predators if they are to establish successfully in natural habitats. We tested the hypotheses that (1) artificial structures (e.g., suspended aquaculture installations) present a niche opportunity for invasive species by providing a refuge from native benthic predators, and (2) native predators in natural benthic habitats suppress successful colonization by invaders. A recruitment experiment showed that the ascidians Pyura chilensis (native) and Ciona intestinalis (invasive) could recruit to both suspended artificial structures and natural benthic habitats. Ciona, however, was only able to establish adult populations on artificial structures. In natural benthic habitats Ciona only recruited and grew in predator-exclusion cages, because without this protection predation prevented its establishment. In predation experiments, native invertebrate and fish predators removed all invasive ascidians (recruits and adults) in benthic habitats, which contrasted with the high adult survival of the native ascidian P. chilensis. The refuge from a number of benthic predators facilitates the establishment of large populations of invasive species on suspended structures. We present a conceptual model of the invasion processes that includes the anthropogenic structures as a transitional stepping-stone that facilitates invasion by enhancing and prolonging propagule supply to surrounding natural communities. Those established invaders might then overcome biotic resistance during time periods when populations of consumers or competitors are weakened by natural or anthropogenic disturbances. Our results suggest that the conservation of natural habitats with a high diversity of native predators can be an effective means to prevent the spread of invasive species growing on suspended structures.

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Section: Discussionmentioning

confidence: 99%

Section: Invasibilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Predation contributes to invasion resistance of benthic communities against the non-indigenous tunicate Ciona intestinalis

2011

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“…obs. ), and its ability to effectively consume fouling organisms on pearl nets of scallop aquaculture (Dumont et al 2009) suggest an important functional role of shrimp in controlling benthic assemblages. Given the importance of R. typus grazing on fouling communities, further studies are required to elucidate the ecological role of this abundant species in natural habitats (Caillaux & Stotz 2003).…”

Section: Discussionmentioning

confidence: 99%

Anthropogenic structures as a spatial refuge from predation for the invasive bryozoan Bugula neritina

Dumont

Harris²,

Gaymer³

2011

Mar. Ecol. Prog. Ser.

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Anthropogenic structures may play an important role in the marine invasion process by providing novel artificial habitats, often out of the reach of common benthic predators. A survey of piers in northern-central Chile revealed a change in the epibenthic assemblage on pilings at different distances from a rocky shore with abundant grazers and predators. Pilings on soft sediment, away from the rocky shore, were heavily colonized by the invasive bryozoan Bugula neritina. We therefore hypothesized that benthic predators may forage on pilings located on rocky bottom whereas pilings on soft sediment benefit from the absence of generalist benthic predators which do not occur on soft sediment. We examined piling communities using cages directly attached to pilings, where we included or excluded the sea urchin Tetrapygus niger and the rock shrimp Rhyncocinetes typus. Resultant communities differed substantially; a high percentage of bare space occurred in the presence of sea urchins, while turf algae dominated in the presence of shrimp. Both sea urchins and shrimp suppressed the colonization of the invasive B. neritina and, when acting together, totally prevented its recruitment. In contrast, invasive bryozoans colonized 95% of the available substratum in cages where predators were excluded. Our results show the important role of benthic generalist predators in limiting the establishment and spread of non-native species on anthropogenic structures. Further, this study highlights the unprecedented role of shrimp grazing in structuring hard-bottom communities.

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“…A number of biological-control alternatives have also been explored, including herbivorous fish (Kvenseth, 1996), crabs (Enright, 1993;Hidu et al, 1981), sea cucumbers (Ahlgren, 1998), shrimps (Dumont et al, 2009), and sea urchins (Lodeiros and Garcia, 2004;Qi et al, 2014;Ross et al, 2004), the latter group having been shown to be particularly effective at biofouling control. Lodeiros and Garcia (2004) found that Lytechinus variegatus significantly reduced fouling on both pearl nets and pearl oyster (Pinctada imbricata) shells compared to controls without urchins, but reported that Echinometra lucunter, while capable of reducing the amount of biofouling, was not as effective as L. variegatus.…”

Section: Introductionmentioning

confidence: 98%

Co-culturing green sea urchins (Strongylocentrotus droebachiensis) with mussels (Mytilus spp.) to control biofouling at an integrated multi-trophic aquaculture site

2016

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The native rock shrimp Rhynchocinetes typus as a biological control of fouling in suspended scallop cultures

Cited by 31 publications

References 20 publications

Predation contributes to invasion resistance of benthic communities against the non-indigenous tunicate Ciona intestinalis

Predation contributes to invasion resistance of benthic communities against the non-indigenous tunicate Ciona intestinalis

Anthropogenic structures as a spatial refuge from predation for the invasive bryozoan Bugula neritina

Co-culturing green sea urchins (Strongylocentrotus droebachiensis) with mussels (Mytilus spp.) to control biofouling at an integrated multi-trophic aquaculture site

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