1
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The bioeconomic paradox of market-based invasive species harvest: a case study of the commercial lionfish fishery. Biol Invasions 2023. [DOI: 10.1007/s10530-023-02998-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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2
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Lozano-Peña JP, Polo-Silva CJ, Delgado-Huertas A, Sanjuan-Muñoz A. Isotopic niche partitioning between an invasive fish and two native mesopredators in the Colombian Caribbean. FOOD WEBS 2023. [DOI: 10.1016/j.fooweb.2023.e00272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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3
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Davis ACD, Akins L, Pollock C, Lundgren I, Johnston MA, Castillo B, Reale‐Munroe K, McDonough V, Moneysmith S, Green SJ. Multiple drivers of invasive lionfish culling efficiency in marine protected areas. CONSERVATION SCIENCE AND PRACTICE 2021. [DOI: 10.1111/csp2.541] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Affiliation(s)
| | - Lad Akins
- Frost Museum of Science Miami Florida USA
- Reef Environmental Education Foundation Key Largo Florida USA
| | - Clayton Pollock
- Buck Island Reef National Monument St. Croix Virgin Islands USA
| | - Ian Lundgren
- Buck Island Reef National Monument St. Croix Virgin Islands USA
| | | | - Bernard Castillo
- University of the Virgin Islands Saint Thomas Virgin Islands USA
| | | | | | | | - Stephanie J. Green
- University of Alberta Alberta Canada
- Reef Environmental Education Foundation Key Largo Florida USA
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4
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Tuttle LJ, Lamb RW, Stringer AL. Differential learning by native versus invasive predators to avoid distasteful cleaning mutualists. Funct Ecol 2021. [DOI: 10.1111/1365-2435.13806] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Lillian J. Tuttle
- Department of Integrative Biology Oregon State University Corvallis OR USA
- Hawai‘i Institute of Marine Biology School of Ocean and Earth Science and Technology University of Hawai‘i at Mānoa Kāne‘ohe HI USA
| | - Robert W. Lamb
- Department of Integrative Biology Oregon State University Corvallis OR USA
- Department of Biology Woods Hole Oceanographic Institution Woods Hole MA USA
| | - Allison L. Stringer
- Department of Integrative Biology Oregon State University Corvallis OR USA
- Montana Cooperative Fishery Research Unit Department of Ecology Montana State University Bozeman MT USA
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5
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Shervette VR, Rivera Hernández JM, Nunoo FKE. Age and growth of grey triggerfish Balistes capriscus from trans-Atlantic populations. JOURNAL OF FISH BIOLOGY 2021; 98:1120-1136. [PMID: 33314115 DOI: 10.1111/jfb.14644] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 10/26/2020] [Accepted: 12/09/2020] [Indexed: 06/12/2023]
Abstract
Anthropogenic factors that negatively impact reef fishes can include changes in life-history patterns of fisheries-targeted species. Understanding these impacts on growth and population age structure is essential in the management of exploited populations of fishes. This is the first study to directly compare age and growth for a major fisheries species between east and west populations of a transatlantic reef fish. The main goal of this study was to document age and growth in grey triggerfish Balistes capriscus from coastal waters of Ghana in the Gulf of Guinea (GOG) and compare those with the previous growth studies from that region and with the western Atlantic population. A secondary objective of this study was to evaluate the use of otoliths to age triggerfish and to provide a preliminary comparison with spine-derived age estimates. The results obtained from this study provided an updated understanding of the growth and age structure of the eastern B. capriscus population in GOG. The authors documented that shifts in population attributes occurred for B. capriscus after its major decline in abundance. The differences in physical and biotic characteristics of the East and West Atlantic regions and the differences in collection methods of samples make direct comparisons of growth parameters difficult. Nonetheless, overall differences in maximum sizes and ages were apparent; the western Atlantic population had a larger maximum size and older maximum age. The authors also documented that sagittal otoliths can be used to provide age estimates for triggerfish species, and otoliths as an ageing structure had better between-reader precision compared to dorsal spines.
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Affiliation(s)
- Virginia R Shervette
- Fish/Fisheries Conservation Lab, Department of Biology/Geology, University of South Carolina Aiken, Aiken, South Carolina, USA
- Marine Sciences, SEOE, University of South Carolina, Columbia, South Carolina, USA
| | - Jesús M Rivera Hernández
- Fish/Fisheries Conservation Lab, Department of Biology/Geology, University of South Carolina Aiken, Aiken, South Carolina, USA
- Marine Sciences, SEOE, University of South Carolina, Columbia, South Carolina, USA
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6
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The Case of Lionfish (Pterois miles) in the Mediterranean Sea Demonstrates Limitations in EU Legislation to Address Marine Biological Invasions. JOURNAL OF MARINE SCIENCE AND ENGINEERING 2021. [DOI: 10.3390/jmse9030325] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The European Regulation (EU) 1143/2014 on Invasive Alien Species entered into force in 2015, with the aim to fulfill regional and international biodiversity goals in a concerted manner. To date, the Regulation listed 66 Invasive Alien Species (IAS) that are subject to legal controls. Only one of these is marine. A recent lionfish (Pterois miles) invasion has been closely monitored in the Mediterranean and a detailed risk assessment was made about the profound impacts that this invasive fish is likely to have on the fisheries and biodiversity of the region. In 2016–21, lionfish rapidly became dominant predators along Eastern Mediterranean coasts, yet the process for their inclusion on the EU IAS list has been lengthy and is ongoing. There is an urgent need to learn from this experience. Here, we recommend improvements to the Regulation 1143/2014 and the risk assessment process to protect marine ecosystems and secure the jobs of people that rely on coastal resources.
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7
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Harris HE, Fogg AQ, Gittings SR, Ahrens RNM, Allen MS, Patterson Iii WF. Testing the efficacy of lionfish traps in the northern Gulf of Mexico. PLoS One 2020; 15:e0230985. [PMID: 32845879 PMCID: PMC7449463 DOI: 10.1371/journal.pone.0230985] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 07/28/2020] [Indexed: 11/18/2022] Open
Abstract
Spearfishing is currently the primary approach for removing invasive lionfish (Pterois volitans/miles) to mitigate their impacts on western Atlantic marine ecosystems, but a substantial portion of lionfish spawning biomass is beyond the depth limits of SCUBA divers. Innovative technologies may offer a means to target deepwater populations and allow for the development of a lionfish trap fishery, but the removal efficiency and potential environmental impacts of lionfish traps have not been evaluated. We tested a collapsible, non-containment trap (the ‘Gittings trap’) near artificial reefs in the northern Gulf of Mexico. A total of 327 lionfish and 28 native fish (four were species protected with regulations) recruited (i.e., were observed within the trap footprint at the time of retrieval) to traps during 82 trap sets, catching 144 lionfish and 29 native fish (one more than recruited, indicating detection error). Lionfish recruitment was highest for single (versus paired) traps deployed <15 m from reefs with a 1-day soak time, for which mean lionfish and native fish recruitment per trap were approximately 5 and 0.1, respectively. Lionfish from traps were an average of 19 mm or 62 grams larger than those caught spearfishing. Community impacts from Gittings traps appeared minimal given that recruitment rates were >10X higher for lionfish than native fishes and that traps did not move on the bottom during two major storm events, although further testing will be necessary to test trap movement with surface floats. Additional research should also focus on design and operational modifications to improve Gittings trap deployment success (68% successfully opened on the seabed) and reduce lionfish escapement (56% escaped from traps upon retrieval). While removal efficiency for lionfish demonstrated by traps (12–24%) was far below that of spearfishing, Gittings traps appear suitable for future development and testing on deepwater natural reefs, which constitute >90% of the region’s reef habitat.
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Affiliation(s)
- Holden E Harris
- School of Natural Resources and Environment, Institute of Food and Agriculture Sciences, University of Florida, Gainesville, Florida, United States of America.,Department of Fisheries and Aquatic Sciences, School of Forest Resources and Conservation, Institute of Food and Agriculture Sciences, University of Florida, Gainesville, Florida, United States of America
| | - Alexander Q Fogg
- Okaloosa County Board of County Commissioners, Destin-Fort Walton Beach, Florida, United States of America
| | - Stephen R Gittings
- Office of National Marine Sanctuaries, National Oceanic and Atmospheric Administration, Silver Spring, Maryland, United States of America
| | - Robert N M Ahrens
- Department of Fisheries and Aquatic Sciences, School of Forest Resources and Conservation, Institute of Food and Agriculture Sciences, University of Florida, Gainesville, Florida, United States of America
| | - Micheal S Allen
- Department of Fisheries and Aquatic Sciences, School of Forest Resources and Conservation, Institute of Food and Agriculture Sciences, University of Florida, Gainesville, Florida, United States of America.,Nature Coast Biological Station, Institute of Food and Agriculture Sciences, University of Florida, Cedar Key, Florida, United States of America
| | - William F Patterson Iii
- Department of Fisheries and Aquatic Sciences, School of Forest Resources and Conservation, Institute of Food and Agriculture Sciences, University of Florida, Gainesville, Florida, United States of America
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8
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Strayer DL. Non-native species have multiple abundance-impact curves. Ecol Evol 2020; 10:6833-6843. [PMID: 32724554 PMCID: PMC7381559 DOI: 10.1002/ece3.6364] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 04/16/2020] [Accepted: 04/21/2020] [Indexed: 01/08/2023] Open
Abstract
The abundance-impact curve is helpful for understanding and managing the impacts of non-native species. Abundance-impact curves can have a wide range of shapes (e.g., linear, threshold, sigmoid), each with its own implications for scientific understanding and management. Sometimes, the abundance-impact curve has been viewed as a property of the species, with a single curve for a species. I argue that the abundance-impact curve is determined jointly by a non-native species and the ecosystem it invades, so that a species may have multiple abundance-impact curves. Models of the impacts of the invasive mussel Dreissena show how a single species can have multiple, noninterchangeable abundance-impact curves. To the extent that ecosystem characteristics determine the abundance-impact curve, abundance-impact curves based on horizontal designs (space-for-time substitution) may be misleading and should be used with great caution, it at all. It is important for scientists and managers to correctly specify the abundance-impact curve when considering the impacts of non-native species. Diverting attention from the invading species to the invaded ecosystem, and especially to the interaction between species and ecosystem, could improve our understanding of how non-native species affect ecosystems and reduce uncertainty around the effects of management of populations of non-native species.
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Affiliation(s)
- David L. Strayer
- Cary Institute of Ecosystem StudiesMillbrookNYUSA
- Graham Sustainability InstituteUniversity of MichiganAnn ArborMIUSA
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9
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DeRoy EM, Scott R, Hussey NE, MacIsaac HJ. Density dependence mediates the ecological impact of an invasive fish. DIVERS DISTRIB 2020. [DOI: 10.1111/ddi.13063] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Affiliation(s)
- Emma M. DeRoy
- Great Lakes Institute for Environmental Research University of Windsor Windsor Ontario Canada
| | - Ryan Scott
- Department of Computer Science University of Windsor Windsor Ontario Canada
| | - Nigel E. Hussey
- Department of Biological Sciences University of Windsor Windsor Ontario Canada
| | - Hugh J. MacIsaac
- Great Lakes Institute for Environmental Research University of Windsor Windsor Ontario Canada
- School of Ecology and Environmental Science Yunnan University Kunming China
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10
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Precipitous Declines in Northern Gulf of Mexico Invasive Lionfish Populations Following the Emergence of an Ulcerative Skin Disease. Sci Rep 2020; 10:1934. [PMID: 32020056 PMCID: PMC7000744 DOI: 10.1038/s41598-020-58886-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 01/22/2020] [Indexed: 11/08/2022] Open
Abstract
Invasive Indo-Pacific lionfish Pterois volitans/miles have become well-established in many western Atlantic marine habitats and regions. However, high densities and low genetic diversity could make their populations susceptible to disease. We examined changes in northern Gulf of Mexico (nGOM) lionfish populations following the emergence of an ulcerative skin disease in August 2017, when estimated disease prevalence was as high as 40%. Ulcerated female lionfish had 9% lower relative condition compared to non-ulcerated females. Changes in lionfish size composition indicated a potential recruitment failure in early summer 2018, when the proportion of new recruits declined by >80%. Remotely operated vehicle surveys during 2016–2018 indicated lionfish population density declined in 2018 by 75% on natural reefs. The strongest declines (77–79%) in lionfish density were on high-density (>25 lionfish per 100 m2) artificial reefs, which declined to similar levels as low-density (<15 lionfish per 100 m2) artificial reefs that had prior lionfish removals. Fisheries-dependent sampling indicated lionfish commercial spearfishing landings, commercial catch per unit effort (CPUE), and lionfish tournament CPUE also declined approximately 50% in 2018. Collectively, these results provide correlative evidence for density-dependent epizootic population control, have implications for managing lionfish and impacted native species, and improve our understanding of biological invasions.
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11
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MAJI BANAMALI, TIWARI PANKAJKUMAR, SAMANTA SUDIP, PAL SAMARES, BONA FRANCESCA. EFFECT OF TIME DELAY IN A CANNIBALISTIC STAGE-STRUCTURED PREDATOR–PREY MODEL WITH HARVESTING OF AN ADULT PREDATOR: THE CASE OF LIONFISH. J BIOL SYST 2019. [DOI: 10.1142/s0218339019500189] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The progressive and increasing invasion of an opportunistic predator, the lionfish (Pterois volitans) has become a major threat for the delicate coral-reef ecosystem. The herbivore fish populations, in particular of Parrotfish, are taking the consequences of the lionfish invasion and then their control function on macro-algae growth is threatened. In this paper, we developed and analyzed a stage-structured mathematical model including P. volitans (lionfish), a cannibalistic predator, and a Parrotfish, its potential prey. As control upon the over predation, a rational harvest term has been considered. Further, to make the system more realistic, a delay in the growth rate of juvenile P. volitans population has been incorporated. We performed a global sensitivity analysis to identify important parameters of the system having significant correlations with the fishes. We observed that the system generates transcritical bifurcation, which takes the P. volitans-free equilibrium to the coexistence equilibrium on increasing the values of predation rate of adult P. volitans on Parrotfish. Further increase in the values of the predation rate of adult P. volitans on Parrotfish drives the system into Hopf bifurcation, which induces oscillation around the coexistence equilibrium. Moreover, the conversion efficiency due to cannibalism also has the property to alter the stability behavior of the system through Hopf bifurcation. The effect of time delay on the dynamics of the system is extensively studied and it is observed that the system develops chaotic dynamics through period-doubling oscillations for large values of time delay. However, if the system is already oscillatory, then the large values of time delay causes extinction of P. volitans from the system. To illustrate the occurrence of chaotic dynamics in the system, we drew the Poincaré map and also computed the Lyapunov exponents.
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Affiliation(s)
- BANAMALI MAJI
- Department of Mathematics, Nayagram Pandit Raghunath Murmu Government College, Nayagram, Baligeria, Jhargram – 721125, India
| | | | - SUDIP SAMANTA
- Department of Mathematics, Bankura University, Bankura – 722155, West Bengal, India
| | - SAMARES PAL
- Department of Mathematics, University of Kalyani, Kalyani – 741235, India
| | - FRANCESCA BONA
- DBIOS, University of Turin, via Accademia Albertina 13, 10123 Turin, Italy
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12
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Steell SC, Van Leeuwen TE, Brownscombe JW, Cooke SJ, Eliason EJ. An appetite for invasion: digestive physiology, thermal performance and food intake in lionfish ( Pterois spp.). ACTA ACUST UNITED AC 2019; 222:jeb.209437. [PMID: 31527176 DOI: 10.1242/jeb.209437] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Accepted: 09/09/2019] [Indexed: 12/25/2022]
Abstract
Species invasions threaten global biodiversity, and physiological characteristics may determine their impact. Specific dynamic action (SDA; the increase in metabolic rate associated with feeding and digestion) is one such characteristic, strongly influencing an animal's energy budget and feeding ecology. We investigated the relationship between SDA, scope for activity, metabolic phenotype, temperature and feeding frequency in lionfish (Pterois spp.), which are invasive to western Atlantic marine ecosystems. Intermittent-flow respirometry was used to determine SDA, scope for activity and metabolic phenotype at 26°C and 32°C. Maximum metabolic rate occurred during digestion, as opposed to exhaustive exercise, as in more athletic species. SDA and its duration (SDAdur) were 30% and 45% lower at 32°C than at 26°C, respectively, and lionfish ate 42% more at 32°C. Despite a 32% decline in scope for activity from 26°C to 32°C, aerobic scope may have increased by 24%, as there was a higher range between standard metabolic rate (SMR) and peak SDA (SDApeak; the maximum postprandial metabolic rate). Individuals with high SMR and low scope for activity phenotypes had a less costly SDA and shorter SDAdur but a higher SDApeak Feeding frequently had a lower and more consistent cost than consuming a single meal, but increased SDApeak These findings demonstrate that: (1) lionfish are robust physiological performers in terms of SDA and possibly aerobic scope at temperatures approaching their thermal maximum, (2) lionfish may consume more prey as oceans warm with climate change, and (3) metabolic phenotype and feeding frequency may be important mediators of feeding ecology in fish.
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Affiliation(s)
- S Clay Steell
- Fish Ecology and Conservation Physiology Lab, Carleton University, 1125 Colonel By Drive, Ottawa, ON, Canada, K1S 5B6
| | - Travis E Van Leeuwen
- The Cape Eleuthera Institute, Eleuthera, The Bahamas.,Fisheries and Oceans Canada, 80 East White Hills Road, PO Box 5667, St John's, NL, Canada, A1C 5X1
| | - Jacob W Brownscombe
- Fish Ecology and Conservation Physiology Lab, Carleton University, 1125 Colonel By Drive, Ottawa, ON, Canada, K1S 5B6
| | - Steven J Cooke
- Fish Ecology and Conservation Physiology Lab, Carleton University, 1125 Colonel By Drive, Ottawa, ON, Canada, K1S 5B6
| | - Erika J Eliason
- Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
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13
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Tamburello N, Ma BO, Côté IM. From individual movement behaviour to landscape-scale invasion dynamics and management: a case study of lionfish metapopulations. Philos Trans R Soc Lond B Biol Sci 2019; 374:20180057. [PMID: 31352886 DOI: 10.1098/rstb.2018.0057] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Modelling the dynamics of small, interconnected populations, or metapopulations, can help pinpoint habitat patches that are critical for population persistence in patchy habitats. For conservation purposes, these patches are typically earmarked for protection, but for invasive species management, these patches could be targeted to hasten the populations' demise. Here, we show how metapopulation modelling, coupled with an understanding of size-dependent dispersal behaviour, can be used to help optimize the distribution of limited resources for culling specific populations of invasive Indo-Pacific lionfish (Pterois volitans) in the western Atlantic. Through simulation using fitted model parameters, we derive three insights that can inform management. First, culling lionfish from target patches reduces the probability of lionfish occupancy at surrounding patches. Second, this effect depends on patch size and connectivity, but is strongest at the local scale and decays with distance. Finally, size-dependent dispersal in lionfish means that size-selective culling can change both a population's size distribution and dispersal potential, with cascading effects on network connectivity, population dynamics and management outcomes. By explicitly considering seascape structure and movement behaviour when allocating effort to the management of invasive species, managers can optimize resource use to improve management outcomes. This article is part of the theme issue 'Linking behaviour to dynamics of populations and communities: application of novel approaches in behavioural ecology to conservation'.
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Affiliation(s)
- Natascia Tamburello
- ESSA Technologies Ltd, Vancouver, British Columbia, Canada V6H 3H4.,Department of Biological Sciences, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, Canada V5A 1S6
| | - Brian O Ma
- ESSA Technologies Ltd, Vancouver, British Columbia, Canada V6H 3H4
| | - Isabelle M Côté
- Department of Biological Sciences, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, Canada V5A 1S6
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14
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Abstract
To predict the threat of biological invasions to native species, it is critical that we understand how increasing abundance of invasive alien species (IAS) affects native populations and communities. The form of this relationship across taxa and ecosystems is unknown, but is expected to depend strongly on the trophic position of the IAS relative to the native species. Using a global metaanalysis based on 1,258 empirical studies presented in 201 scientific publications, we assessed the shape, direction, and strength of native responses to increasing invader abundance. We also tested how native responses varied with relative trophic position and for responses at the population vs. community levels. As IAS abundance increased, native populations declined nonlinearly by 20%, on average, and community metrics declined linearly by 25%. When at higher trophic levels, invaders tended to cause a strong, nonlinear decline in native populations and communities, with the greatest impacts occurring at low invader abundance. In contrast, invaders at the same trophic level tended to cause a linear decline in native populations and communities, while invaders at lower trophic levels had no consistent impacts. At the community level, increasing invader abundance had significantly larger effects on species evenness and diversity than on species richness. Our results show that native responses to invasion depend critically on invasive species' abundance and trophic position. Further, these general abundance-impact relationships reveal how IAS impacts are likely to develop during the invasion process and when to best manage them.
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15
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Bryan DR, Blondeau J, Siana A, Ault JS. Regional differences in an established population of invasive Indo-Pacific lionfish ( Pterois volitans and P. miles) in south Florida. PeerJ 2018; 6:e5700. [PMID: 30324014 PMCID: PMC6186158 DOI: 10.7717/peerj.5700] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 09/06/2018] [Indexed: 11/20/2022] Open
Abstract
About nine years ago (circa 2009), Indo-Pacific lionfishes (Pterois volitans and P. miles) invaded the south Florida coral reef ecosystem. During the intervening period of time, there has been substantial research on their biology, life history, demography, and habitat preferences; however, little is known concerning their regional population status and trends in the region. Here, we use a large-scale fisheries independent reef fish visual survey to investigate lionfish population status among three south Florida regions: Dry Tortugas, Florida Keys, and southeast Florida. Density estimates (ind ha−1) have been relatively stable since 2012, and are lower than other areas reported in the western Atlantic and Caribbean Sea. Low, stable population densities in south Florida suggest there may be a natural mechanism for lionfish population control. In the Dry Tortugas, lionfish density in 2016 was significantly lower (0.6 ind ha−1 ± 0.15 SE) than the two other south Florida regions. The Dry Tortugas region has the highest percentage of marine protected areas, the lowest level of exploitation, and thus the highest densities of potential lionfish predators and competitors. In the Florida Keys and southeast Florida in 2016, lionfish densities were greater (5.4 ind ha−1 ± 1.0 SE and 9.0 ± 2.7 SE, respectively) than the Dry Tortugas. Fishing pressure on lionfish was higher in these two regions, but densities of several potential predators and competitors were substantially lower. Despite relatively low regional lionfish densities that can be attributed to some combination of fishing mortality and natural biocontrol, lionfish are still well established in the south Florida coral reef ecosystem, warranting continued concern.
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Affiliation(s)
- David R Bryan
- Department of Marine Ecosystems and Society, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, United States of America.,Pacific States Marine Fisheries Commission, Alaska Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Seattle, WA, United States of America
| | - Jeremiah Blondeau
- Southeast Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Miami, FL, United States of America
| | - Ashley Siana
- Department of Marine Ecosystems and Society, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, United States of America
| | - Jerald S Ault
- Department of Marine Ecosystems and Society, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, United States of America
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16
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Sofaer HR, Jarnevich CS, Pearse IS. The relationship between invader abundance and impact. Ecosphere 2018. [DOI: 10.1002/ecs2.2415] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Affiliation(s)
- Helen R. Sofaer
- U.S. Geological Survey, Fort Collins Science Center Fort Collins Colorado 80526 USA
| | | | - Ian S. Pearse
- U.S. Geological Survey, Fort Collins Science Center Fort Collins Colorado 80526 USA
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17
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Brandl SJ, Goatley CHR, Bellwood DR, Tornabene L. The hidden half: ecology and evolution of cryptobenthic fishes on coral reefs. Biol Rev Camb Philos Soc 2018; 93:1846-1873. [PMID: 29736999 DOI: 10.1111/brv.12423] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 03/30/2018] [Accepted: 04/05/2018] [Indexed: 01/04/2023]
Abstract
Teleost fishes are the most diverse group of vertebrates on Earth. On tropical coral reefs, their species richness exceeds 6000 species; one tenth of total vertebrate biodiversity. A large proportion of this diversity is composed of cryptobenthic reef fishes (CRFs): bottom-dwelling, morphologically or behaviourally cryptic species typically less than 50 mm in length. Yet, despite their diversity and abundance, these fishes are both poorly defined and understood. Herein we provide a new quantitative definition and synthesise current knowledge on the diversity, distribution and life history of CRFs. First, we use size distributions within families to define 17 core CRF families as characterised by the high prevalence (>10%) of small-bodied species (<50 mm). This stands in strong contrast to 42 families of large reef fishes, in which virtually no small-bodied species have evolved. We posit that small body size has allowed CRFs to diversify at extremely high rates, primarily by allowing for fine partitioning of microhabitats and facilitation of allopatric reproductive isolation; yet, we are far from understanding and documenting the biodiversity of CRFs. Using rates of description since 1758, we predict that approximately 30 new species of cryptobenthic species will be described per year until 2050 (approximately twice the annual rate compared to large fishes). Furthermore, we predict that by the year 2031, more than half of the described coral reef fish biodiversity will consist of CRFs. These fishes are the 'hidden half' of vertebrate biodiversity on coral reefs. Notably, global geographic coverage and spatial resolution of quantitative data on CRF communities is uniformly poor, which further emphasises the remarkable reservoir of biodiversity that is yet to be discovered. Although small body size may have enabled extensive diversification within CRF families, small size also comes with a suite of ecological challenges that affect fishes' capacities to feed, survive and reproduce; we identify a range of life-history adaptations that have enabled CRFs to overcome these limitations. In turn, these adaptations bestow a unique socio-ecological role on CRFs, which includes a key role in coral reef trophodynamics by cycling trophic energy provided by microscopic prey to larger consumers. Although small in body size, the ecology and evolutionary history of CRFs may make them a critical component of coral-reef food webs; yet our review also shows that these fishes are highly susceptible to a variety of anthropogenic disturbances. Understanding the consequences of these changes for CRFs and coral reef ecosystems will require us to shed more light on this frequently overlooked but highly diverse and abundant guild of coral reef fishes.
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Affiliation(s)
- Simon J Brandl
- Department of Biological Sciences, Simon Fraser University, Burnaby, V5A 1S6, Canada.,Tennenbaum Marine Observatories Network, Smithsonian Institution, Edgewater, MD, 21037, U.S.A
| | - Christopher H R Goatley
- Function, Evolution and Anatomy Research (FEAR) Lab and Palaeoscience Research Centre, School of Environmental and Rural Science, University of New England, Armidale, 2351, Australia
| | - David R Bellwood
- College of Science and Engineering, James Cook University, Townsville, 4811, Australia.,ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, 4811, Australia
| | - Luke Tornabene
- School of Aquatic and Fishery Sciences, and the Burke Museum of Natural History and Culture, University of Washington, Seattle, WA, 98105, U.S.A
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18
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Shifts in Eastern Mediterranean Fish Communities: Abundance Changes, Trait Overlap, and Possible Competition between Native and Non-Native Species. FISHES 2018. [DOI: 10.3390/fishes3020019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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19
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Kindinger TL. Invasive predator tips the balance of symmetrical competition between native coral-reef fishes. Ecology 2018; 99:792-800. [PMID: 29490107 DOI: 10.1002/ecy.2173] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 12/18/2017] [Accepted: 01/22/2018] [Indexed: 11/09/2022]
Abstract
The importance of competition and predation in structuring ecological communities is typically examined separately such that interactions between these processes are seldom understood. By causing large reductions in native prey, invasive predators may modify native species interactions. I conducted a manipulative field experiment in The Bahamas to investigate the possibility that the invasive Pacific red lionfish (Pterois volitans) alters competition between planktivorous fairy and blackcap basslets (Gramma loreto and Gramma melacara, respectively). Competition between these coral-reef fishes is known to have symmetrical effects on the juveniles of both species, whereby the feeding positions under reef ledges and growth rates of these individuals are hindered. Following baseline censuses of local populations of competing basslets, I simultaneously manipulated the abundance of lionfish on entire reefs, and the abundance of basslets in local populations under isolated ledges within each reef, resulting in three treatments: unmanipulated control populations of both basslets, reduced abundance of fairy basslet, and reduced abundance of blackcap basslet. For eight weeks, I measured the change in biomass and feeding position of 2-5 cm size classes of each basslet species and calculated the growth rates of ~2 cm individuals using a standard mark-and-recapture method. Experimental populations were filmed at dusk using automated video cameras to quantify the behavior of lionfish overlapping with basslets. Video playback revealed lionfish hunted across all ledge positions, regardless of which basslet species were present, yet lionfish differentially reduced the biomass of only juvenile (2 cm) fairy basslet. Predation reduced the effects of interspecific competition on juvenile blackcap basslet as evidenced by corresponding shifts in feeding position toward coveted front edges of ledges and increases in growth rates that were comparable to the response of these fish in populations where competition was experimentally reduced. Thus, an invasive marine predator altered the outcome of interspecific competition via differential predation, which tipped the balance of competition between native prey species from symmetrical to asymmetrical effects on juveniles. This study reveals a newly demonstrated context in which predation can indirectly facilitate prey, further broadening our understanding of the interactive effects of predation and competition in the context of invasive species.
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Affiliation(s)
- Tye L Kindinger
- Department of Integrative Biology, Oregon State University, Corvallis, Oregon, 97331, USA
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20
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Peiffer F, Bejarano S, Palavicini de Witte G, Wild C. Ongoing removals of invasive lionfish in Honduras and their effect on native Caribbean prey fishes. PeerJ 2017; 5:e3818. [PMID: 29062597 PMCID: PMC5650727 DOI: 10.7717/peerj.3818] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Accepted: 08/26/2017] [Indexed: 11/20/2022] Open
Abstract
The invasion of Indo-Pacific lionfish is one of the most pressing concerns in the context of coral reef conservation throughout the Caribbean. Invasive lionfish threaten Caribbean fish communities by feeding on a wide range of native prey species, some of which have high ecological and economic value. In Roatan (Honduras) a local non-governmental organisation (i.e. Roatan Marine Park) trains residents and tourists in the use of spears to remove invasive lionfish. Here, we assess the effectiveness of local removal efforts in reducing lionfish populations. We ask whether reefs subject to relatively frequent removals support more diverse and abundant native fish assemblages compared to sites were no removals take place. Lionfish biomass, as well as density and diversity of native prey species were quantified on reefs subject to regular and no removal efforts. Reefs subject to regular lionfish removals (two to three removals month−1) with a mean catch per unit effort of 2.76 ± 1.72 lionfish fisher−1 h−1 had 95% lower lionfish biomass compared to non-removal sites. Sites subject to lionfish removals supported 30% higher densities of native prey-sized fishes compared to sites subject to no removal efforts. We found no evidence that species richness and diversity of native fish communities differ between removal and non-removal sites. We conclude that opportunistic voluntary removals are an effective management intervention to reduce lionfish populations locally and might alleviate negative impacts of lionfish predation. We recommend that local management and the diving industry cooperate to cost-effectively extend the spatial scale at which removal regimes are currently sustained.
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Affiliation(s)
- Friederike Peiffer
- Coral Reef Ecology Group, Marine Ecology Department, Faculty of Biology and Chemistry, University of Bremen, Bremen, Germany
| | - Sonia Bejarano
- Department of Ecology, Leibniz Centre for Tropical Marine Research (ZMT), Bremen, Germany
| | - Giacomo Palavicini de Witte
- Roatan Marine Park, Roatan, Islas De La Bahia, Honduras.,Current affiliation: Shark Legacy Project, Roatan, Islas De La Bahia, Honduras
| | - Christian Wild
- Coral Reef Ecology Group, Marine Ecology Department, Faculty of Biology and Chemistry, University of Bremen, Bremen, Germany
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21
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Density-dependent colonization and natural disturbance limit the effectiveness of invasive lionfish culling efforts. Biol Invasions 2017. [DOI: 10.1007/s10530-017-1449-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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22
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A few is enough: a low cover of a non-native seaweed reduces the resilience of Mediterranean macroalgal stands to disturbances of varying extent. Biol Invasions 2017. [DOI: 10.1007/s10530-017-1442-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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23
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A Framework for Evaluating Heterogeneity and Landscape-Level Impacts of Non-native Aquatic Species. Ecosystems 2017. [DOI: 10.1007/s10021-016-0102-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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24
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McCormick MI, Allan BJM. Lionfish misidentification circumvents an optimized escape response by prey. CONSERVATION PHYSIOLOGY 2016; 4:cow064. [PMID: 27990292 PMCID: PMC5156895 DOI: 10.1093/conphys/cow064] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Revised: 11/02/2016] [Accepted: 11/08/2016] [Indexed: 06/06/2023]
Abstract
Invasive lionfish represent an unprecedented problem in the Caribbean basin, where they are causing major changes to foodwebs and habitats through their generalized predation on fishes and invertebrates. To ascertain what makes the red lionfish (Pterois volitans) such a formidable predator, we examined the reaction of a native damselfish prey, the whitetail damsel (Pomacentrus chrysurus), to a repeatable startle stimulus once they had been forewarned of the sight or smell of lionfish. Fast-start responses were compared with prey forewarned of a predatory rockcod (Cephalopholis microprion), a corallivorous butterflyfish (Chaetodon trifasctiatus) and experimental controls. Forewarning of the sight, smell or a combination of the two cues from a rockcod led to reduced escape latencies and higher response distances, speed and maximal speed compared with controls, suggesting that forewarning primed the prey and enabled a more effective escape response. In contrast, forewarning of lionfish did not affect the fast-start kinematics measured, which were the same as in the control and non-predatory butterflyfish treatments. Lionfish appear to be able to circumvent mechanisms commonly used by prey to identify predators and were misclassified as non-predatory, and this is likely to contribute to their success as predators.
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Affiliation(s)
- Mark I. McCormick
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD 4811, Australia
- Department of Marine Biology and Aquaculture, James Cook University, Townsville, QLD 4811, Australia
| | - Bridie J. M. Allan
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD 4811, Australia
- Department of Marine Biology and Aquaculture, James Cook University, Townsville, QLD 4811, Australia
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25
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MacIsaac HJ, De Roy EM, Leung B, Grgicak-Mannion A, Ruiz GM. Possible Ballast Water Transfer of Lionfish to the Eastern Pacific Ocean. PLoS One 2016; 11:e0165584. [PMID: 27806076 PMCID: PMC5091758 DOI: 10.1371/journal.pone.0165584] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Accepted: 10/16/2016] [Indexed: 11/18/2022] Open
Abstract
The Indo-Pacific Red Lionfish was first reported off the Florida coast in 1985, following which it has spread across much of the SE USA, Gulf of Mexico, and Caribbean Sea. Lionfish negatively impact fish and invertebrate assemblages and abundances, thus further spread is cause for concern. To date, the fish has not been reported on the Pacific coast of North or Central America. Here we examine the possibility of ballast water transfer of lionfish from colonized areas in the Atlantic Ocean to USA ports on the Pacific coast. Over an eight-year period, we documented 27 commercial vessel-trips in which ballast water was loaded in colonized sites and later discharged untreated into Pacific coast ports in the USA. California had the highest number of discharges including San Francisco Bay and Los Angeles-Long Beach. A species distribution model suggests that the probability of lionfish establishment is low for the western USA, Colombia and Panama, low to medium for Costa Rica, Nicaragua, El Salvador and Guatemala, medium to high for mainland Ecuador, and very high for western Mexico, Peru and the Galapagos Islands. Given the species’ intolerance of freshwater conditions, we propose that ballast water exchange be conducted in Gatún Lake, Panama for western-bound vessels carrying ‘risky’ ballast water to prevent invasion of the eastern Pacific Ocean.
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Affiliation(s)
- Hugh J. MacIsaac
- Great Lakes Institute for Environmental Research, University of Windsor, Windsor, Ontario, Canada
- * E-mail:
| | - Emma M. De Roy
- Great Lakes Institute for Environmental Research, University of Windsor, Windsor, Ontario, Canada
| | - Brian Leung
- Department of Biology, McGill University, Montreal, Quebec, Canada
| | - Alice Grgicak-Mannion
- Great Lakes Institute for Environmental Research, University of Windsor, Windsor, Ontario, Canada
| | - Gregory M. Ruiz
- Smithsonian Environmental Research Center, Edgewater, Maryland, United States of America
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26
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Consumptive and non-consumptive effects of an invasive marine predator on native coral-reef herbivores. Biol Invasions 2016. [DOI: 10.1007/s10530-016-1268-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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27
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Benkwitt CE. Central‐place foraging and ecological effects of an invasive predator across multiple habitats. Ecology 2016; 97:2729-2739. [DOI: 10.1002/ecy.1477] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 04/26/2016] [Accepted: 05/05/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Cassandra E. Benkwitt
- Department of Integrative Biology Oregon State University Corvallis Oregon 97331 USA
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28
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Ortiz M, Rodriguez-Zaragoza F, Hermosillo-Nuñez B, Jordán F. Control Strategy Scenarios for the Alien Lionfish Pterois volitans in Chinchorro Bank (Mexican Caribbean): Based on Semi-Quantitative Loop Analysis. PLoS One 2015; 10:e0130261. [PMID: 26114745 PMCID: PMC4482547 DOI: 10.1371/journal.pone.0130261] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Accepted: 05/19/2015] [Indexed: 11/18/2022] Open
Abstract
Ecological and eco-social network models were constructed with different levels of complexity in order to represent and evaluate management strategies for controlling the alien species Pterois volitans in Chinchorro bank (Mexican Caribbean). Levins´s loop analysis was used as a methodological framework for assessing the local stability (considered as a component of sustainability) of the modeled management interventions represented by various scenarios. The results provided by models of different complexity (models 1 through 4) showed that a reduction of coral species cover would drive the system to unstable states. In the absence of the alien lionfish, the simultaneous fishing of large benthic epifaunal species, adult herbivorous fish and adult carnivorous fish could be sustainable only if the coral species present high levels of cover (models 2 and 3). Once the lionfish is added to the simulations (models 4 and 5), the analysis suggests that although the exploitation or removal of lionfish from shallow waters may be locally stable, it remains necessary to implement additional and concurrent human interventions that increase the holistic sustainability of the control strategy. The supplementary interventions would require the implementation of programs for: (1) the restoration of corals for increasing their cover, (2) the exploitation or removal of lionfish from deeper waters (decreasing the chance of source/sink meta-population dynamics) and (3) the implementation of bans and re-stocking programs for carnivorous fishes (such as grouper) that increase the predation and competition pressure on lionfish (i.e. biological control). An effective control management for the alien lionfish at Chinchorro bank should not be optimized for a single action plan: instead, we should investigate the concurrent implementation of multiple strategies.
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Affiliation(s)
- Marco Ortiz
- Instituto Antofagasta, Instituto de Investigaciones Oceanológicas, Facultad de Recursos del Mar, Universidad de Antofagasta, Antofagasta, Chile
- * E-mail:
| | - Fabián Rodriguez-Zaragoza
- Laboratorio de Ecosistemas Marinos y Acuicultura, Departamento de Ecología, Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Carretera a Nogales Km. 15,5, Las Agujas Nextipac, Zapopan C.P. 45110, Jalisco, México
| | - Brenda Hermosillo-Nuñez
- Programa de Doctorado en Ciencias Aplicadas, Mención Sistemas Marinos Costeros, Facultad de Recursos del Mar, Universidad de Antofagasta, Antofagasta, Chile
| | - Ferenc Jordán
- Centre for Ecological Research, Hungarian Academy of Sciences, Karolina ut 29, Budapest, Hungary
- The Microsoft Research–COSBI, Piazza Manifattura 1, Rovereto, Italy
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