What Makes Lionfish Successful Invaders
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What Makes Lionfish Successful Invaders
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Author :
language : en
Publisher:
Release Date : 2024
What Makes Lionfish Successful Invaders written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024 with categories.
Examining The Lionfish Invasion
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Author : Dominique Lazarre
language : en
Publisher:
Release Date : 2016
Examining The Lionfish Invasion written by Dominique Lazarre and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
The global nature of travel and trade has increased the potential for the spread of invasive species around the world. These invasive alien species (IAS) have the potential to negatively influence the ecosystems they invade by preying upon, infecting or out-competing native species or altering their new habitat. The invasion of two Indo-Pacific lionfishes, Pterois volitans and Pterois miles, is having far reaching impacts on reef fish biodiversity and abundance throughout the Tropical Western Atlantic Ocean. The body of lionfish research from their native range is composed of studies related to their biology or behaviors in aquarium settings. These deficiencies have left researchers with knowledge gaps related to why lionfish spread so rapidly and the best methods to control lionfish abundance in the diverse habitats they occupy. Analysis of juvenile otolith birthdates verified that lionfish successfully spawn throughout the calendar year. This information was coupled with known early life history traits of lionfish to simulate dispersal of "lionfish" particles in the Caribbean. This dispersal identified Florida, the Bahamas and Cuba as major sinks for lionfish larvae throughout the region, and Jamaica as an important link between the Greater Antilles and southern portions of the Caribbean. Additionally, lionfish reproductive strategy facilitated their spread across a known geographic barrier between Florida and the Caribbean that creates a genetic break between native reef fishes. Highly connected dispersal pathways, continuous spawning of lionfish, and the lack of natural predators help to make lionfish more successful in the invaded range, and prompt the development of management plans to counteract this growth. Lionfish are present in a host of diverse habitats, but monitoring and culling is restricted to shallow, diveable waters. A two-year observer study in the deeper water spiny lobster trap fishery (>20 m) was used to investigate the distribution of lionfish in an understudied environment. Lionfish have become a major component of the fishery's bycatch, and the trap fishery provides an additional mechanism for lionfish removals. This method can eliminate a larger number of individuals than the traditional methods used in shallower water culling derbies. The lack of lionfish caught in the shallower fishing areas precipitated a series of tank experiments to investigate the preference for benthic structures found in the different depth regimes within the fishery. Lionfish spent more time associating with coralline habitat structures than any other, but they were displaced from this habitat in the presence of lobster. The exclusionary behaviors of lobster indicate their potential to alter lionfish habitat choices. These insights provide marine managers with information to understand invasive species ecological dynamics, to better manage for future invasions, and to mitigate the impacts of lionfishes.
Interactions Among Invasive Pacific Red Lionfish Fish Parasites And Cleaning Mutualisms Native To Atlantic Coral Reefs
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Author : Lillian J. Tuttle
language : en
Publisher:
Release Date : 2016
Interactions Among Invasive Pacific Red Lionfish Fish Parasites And Cleaning Mutualisms Native To Atlantic Coral Reefs written by Lillian J. Tuttle and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with Cleaner fishes categories.
What makes invasive species successful, and how do they affect native populations and communities? I addressed these key questions in the context of the invasion of Atlantic coral reefs by Pacific red lionfish (Pterois volitans). To assess the role of parasites in contributing to the success of this invasion, I compared infection rates of lionfish with syntopic carnivorous fishes at multiple locations in both the invasive and native ranges of lionfish. Invasive Atlantic lionfish had extremely few parasites when compared both to native Pacific lionfish and to ecologically similar native Atlantic reef fishes. Such “enemy release” may help to explain this successful invasion if lionfish consequently allocate more energy to growth and reproduction than to costly immune defenses. With few parasites limiting them, lionfish may consume ecologically important species, including Elacatinus spp. cleaning gobies: ubiquitous, conspicuous fishes that remove ectoparasites from other reef fishes. Although juvenile lionfish ate cleaner goby (E. genie) during laboratory experiments, they quickly learned to avoid them, likely due to a previously undescribed skin toxin in these gobies. Field experiments further revealed no change in the survival and growth rates of newly recruited cohorts of the cleaner goby in the presence vs. absence of lionfish. However, lionfish caused declines in the densities of the most abundant facultative cleaner, juvenile bluehead wrasse (Thalassoma bifasciatum), and of transient fishes that are often cleaned while visiting coral patch reefs. Therefore, lionfish do not have uniformly negative effects on native species; distasteful to potential predators, the cleaner goby is among the remarkably few small fish to escape predation by lionfish. The continued presence of Elacatinus spp. cleaning gobies, the predominant cleaners on invaded reefs, should limit cascading effects of lionfish on other Atlantic coral-reef inhabitants. Nonetheless, given their broad and voracious appetites, invasive lionfish will likely continue to affect native reef communities via predation on other cleaners and ecologically important fishes.
Conceptual And Applied Approaches To Marine Invasions
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Author : Nicola Smith
language : en
Publisher:
Release Date : 2019
Conceptual And Applied Approaches To Marine Invasions written by Nicola Smith and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
The accelerating rise in global trade and travel means that our world is more interconnected than ever before. This trend could severely impact species and ecosystems globally, as it increases opportunities for species to invade regions beyond their natural range. In this thesis, I combine ecological theory and data synthesis with empirical field-studies to tackle the questions of what makes some communities more easily invaded than others, and how can both natural and anthropogenic control interventions affect the persistence and impacts of invasive species. I first evaluate the relationship between native species diversity and invasibility, or the vulnerability of a community to invasion. Using a meta-analytic approach, I show that the conflicting patterns between diversity and invasibility that are often observed in the literature are likely due to not only differences in spatial scales between studies but also to differences in the metrics researchers use to measure invader success. I then use the invasion of Caribbean coral reefs by the predatory Indo-Pacific lionfish as a model system to test natural and anthropogenic means of controlling the invader. Using a combination of fisheries-derived sampling of native grouper predators and a field experiment conducted across a gradient of grouper abundance, I examine the ability of native grouper predators to mitigate the negative effects of lionfish predation in the Bahamas. I reveal little evidence for direct predation by groupers on lionfish, but show that fear of native groupers alone by lionfish is sufficient to evoke behavioural changes in lionfish that could potentially reduce their impact on native prey. Finally, I use a long-term field experiment to investigate the ecological effectiveness of infrequent culling (i.e., the physical removal of lionfish from reefs by divers). I demonstrate that infrequent culling can reduce lionfish abundance, but is insufficient to halt the decline in native prey fish biomass. Moreover, I show that large-scale natural disturbances, like hurricanes, and density-dependent movement by lionfish from neighbouring reefs can undermine culling efforts. Overall, my thesis reveals that the development of standardized metrics is key to generate a holistic understanding of invasion dynamics, and that both natural and anthropogenic control over invaders is unlikely to stymy biological invasions at the scale currently observed for Indo-Pacific lionfish in the Caribbean.
Biological Invasions And Animal Behaviour
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Author : Judith S. Weis
language : en
Publisher: Cambridge University Press
Release Date : 2016-10-13
Biological Invasions And Animal Behaviour written by Judith S. Weis and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-10-13 with Science categories.
This book provides a comprehensive look at the critical role of animal behaviour in the success and impact of biological invasions.
Assessing The Ecological And Socioeconomic Impacts Of The Lionfish Invasion In The Wider Caribbean Region
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Author : Luis Malpica Cruz
language : en
Publisher:
Release Date : 2017
Assessing The Ecological And Socioeconomic Impacts Of The Lionfish Invasion In The Wider Caribbean Region written by Luis Malpica Cruz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
Environmental changes of different scales and magnitudes are occurring at an alarming pace throughout the globe. As natural and human systems resist, cope, and/or adapt to global changes, new equilibrium states might be reached. To understand these changes we need to obtain information relevant to both biological and human systems and the interactions within and between them. My thesis combines approaches from ecology and socioeconomic to investigate the impacts of a specific stressor - invasive Indo-Pacific lionfish - on coral reef ecosystems. First, I explore how this invasion has changed trophic interactions and food web dynamics of coral reef fish communities. Second, I investigate how the impacts of an invasive predator can scale up to affect and change socioeconomic systems associated with natural systems. I found that the trophic niche of lionfish has changed over time, concomitant with large changes in native fish prey abundance. I also found that lionfish predation is having impacts on energy flow through coral reef fish communities even in the absence of marked changes in fish community structure. Combined, these changes could affect ecosystem function. I also present some of the first evidence of economic impacts of this invasion in regions that depend on reef-related tourism. I show that reductions in lionfish abundance through management actions should be beneficial to the reef tourism industry, and that tourist user fees are an acceptable means of financing such actions. As new management strategies are explored, the popularity of lionfish tournaments (derbies) has increased, premised on the idea that involving the public could help to tackle this invasion. However, my results show that such events are most likely to be successful only when lionfish densities are high and where there is a large pool of participants. This dissertation sheds light on the need to study and manage the impacts of biotic invasions from a multidisciplinary and integrated perspective since impacts will rarely be limited to the natural system affected by invaders.
Invasive Pacific Lionfish Alters Native Community Interactions On Atlantic Coral Reefs
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Author : Tye L. Kindinger
language : en
Publisher:
Release Date : 2016
Invasive Pacific Lionfish Alters Native Community Interactions On Atlantic Coral Reefs written by Tye L. Kindinger and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with Competition (Biology) categories.
Biological invasions have been identified as one of the prominent drivers of global environmental change. In particular, invasive predators typically have substantial negative effects on populations of native prey, even driving species to extinction in extreme cases. However, beyond direct predatory effects, little is understood regarding the specific mechanisms by which invasive predators influence native communities and ecosystems. Therefore, the objective of this dissertation was to investigate whether and how an invasive predator, the Pacific red lionfish (Pterois volitans), alters native community interactions on Atlantic coral reefs. The lionfish invasion is unprecedented for a marine fish in the extent of rapid geographical spread, successful establishment across numerous habitats, and strong predatory effects on native species. By conducting behavioral observations and manipulative experiments in both the laboratory and field settings, I tested for a variety of direct and indirect mechanisms by which invasive lionfish potentially influence native fish communities and coral-reef ecosystems. I first conducted a model-bottle experiment in The Bahamas and Cayman Islands (Chapter 2) to test for aggression of a native territorial damselfish, Stegastes planifrons, toward invasive lionfish. Such territoriality could provide a possible source of biotic resistance that may provide behavioral refugia for native coral-reef fish recruits from lionfish predation. However, the behavior of this damselfish in response to invasive lionfish in a clear plastic bottle did not differ from the minimal response exhibited toward the empty bottle control. Therefore, the territories of this damselfish are unlikely to provide such biotic resistance to the invasion. To investigate whether invasive lionfish alter competition between native prey fishes, I then performed a manipulative field experiment in The Bahamas whereby I simultaneously tested for the effects of both competition and lionfish predation on two congeneric coral-reef fishes, the fairy and blackcap basslets (Gramma loreto and G. melacara, respectively). In the absence of invasive lionfish, competition within local populations of basslets under reef ledges had symmetrical effects on the juveniles of both species (Chapter 3). Interference between species drove juvenile basslets further back under ledges where feeding and growth rates of individuals were reduced. Within reefs with the invasive predator present (Chapter 4), lionfish reduced the density of juvenile fairy basslet, thereby reducing the effects of competition on juvenile blackcap basslet, and tipping the balance of competition between juveniles of these species from symmetrical to asymmetrical effects. Differential predation of invasive lionfish may be explained by a preference for fairy basslet, as demonstrated by a laboratory experiment (Chapter 5). Lastly, I examined possible mechanisms underlying a potential invasive lionfish-herbivorous fishes-macroalgae trophic cascade on large reefs in The Bahamas (Chapter 6). During a two-year field experiment, lionfish caused a decline in the density of small herbivorous fishes on reefs, and behavioral observations revealed that the presence of lionfish reduced grazing by both small and large fishes, which resulted in 66-80% less algae removed from reef substrata. Therefore, invasive lionfish have both consumptive and non-consumptive effects on the important ecosystem function of native herbivorous fishes: reducing the abundance of benthic algae that could otherwise displace corals. In sum, this dissertation indicates that throughout native coral reefs, invasive lionfish (1) are not attacked by native territorial damselfish that could otherwise provide local refugia for native recruit fishes; (2) alter the outcome of interspecific competition between native basslets via differential predation that tips the balance of competition from symmetrical to asymmetrical; and (3) have both consumptive and non-consumptive effects on native herbivorous fishes, which reduces grazing and indirectly benefits benthic macroalgae to the possible detriment of corals. This research broadens our mechanistic understanding of predation in the context of invasive species, which further informs predictions relevant for management and conservation initiatives.
Regional Strategy For The Control Of Invasive Lionfish In The Wider Caribbean
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Author : Lakeshia Anderson
language : en
Publisher:
Release Date : 2013
Regional Strategy For The Control Of Invasive Lionfish In The Wider Caribbean written by Lakeshia Anderson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Pterois volitans categories.
The Strategy is aimed at governments, managers and other stakeholders involved in the control of invasive lionfish in the Caribbean. It provides a framework for action for a regionally coordinated response to the lionfish threat.
Invasive Alien Species
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Author : Thammineni Pullaiah
language : de
Publisher: John Wiley & Sons
Release Date : 2021-04-21
Invasive Alien Species written by Thammineni Pullaiah and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-04-21 with Technology & Engineering categories.
INVASIVE ALIEN SPECIES Invasive Alien Species: Observations and Issues from Around the World Volume 1: Issues and Invasions in Africa Invasive alien species are spreading into new ecosystems each year. The impacts caused by these invaders can be swift and devastating. The topic of invasive alien species is large, complex, and globally significant at various scales, exacerbated by the globalization of world economies and increased trade and commerce that has overcome natural barriers to species movement. Invasive alien species threaten global food supplies, water quality and availability, and energy production and delivery. With the added risks associated with global climate change, the global homogenization of plants, animals, and microbes is a major factor in the decline in ecosystem health and ecosystem services worldwide. To counter this trend, there is a critical need to unify governments, cultures, and programs to improve cross-boundary coordination to effectively address the wide range of invasive alien species threats to the environment, economies, and to plant and animal health; particularly human health. This 4-volume work is the first to compile a set of useful material for key topics, to provide a better understanding of the overall global threat of invasive alien species and the diverse array of problems faced around the world, and assemble material that includes potential replicable solutions to overcome these threats. The books also highlight the threat posed by invasive alien species in terms of a global ‘call to action’. Since invasive species know no boundaries, it is our hope that by compiling material from different scientific and social perspectives around the world, and sharing knowledge and examples of a diverse array of associated topics, we can advance global awareness and improve unified national responses to the threat posed by invasive alien species.
Native Predators Do Not Influence Invasion Success Of Pacific Lionfish On Caribbean Reefs
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Author : Serena Hackerott
language : en
Publisher:
Release Date : 2013
Native Predators Do Not Influence Invasion Success Of Pacific Lionfish On Caribbean Reefs written by Serena Hackerott and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Introduced aquatic organisms categories.