scholarly journals What’s for Dinner? Assessing the Value of an Edible Invasive Species and Outreach Actions to Promote Its Consumption

2021 ◽  
Author(s):  
Inês Cerveira ◽  
Vânia Baptista ◽  
Maria Alexandra Teodósio ◽  
Pedro Morais
Keyword(s):  
Invasive Species ◽  
Native Species ◽  
Aquatic Invasive Species ◽  
Native Range ◽  
Invasive Fish ◽  
Press Releases ◽  
Cynoscion Regalis ◽  
The Public ◽  
Native Resources ◽  
A New Species

Abstract Promoting the consumption of edible aquatic invasive species has gained popularity to minimize its impacts while easing pressure on native resources. Weakfish Cynoscion regalis (Bloch & Schneider, 1801) is one of the most recent invasive fish species in the Iberian Peninsula (Europe) which once sustained an important fishery in the native range (Northwest Atlantic Ocean). Portugal ranks third in the list of the world’s top fish consumers, so promoting a weakfish fishery could at least help minimize the impacts upon native species, since weakfish have innate traits that are likely appreciated by Portuguese fish consumers. However, introducing a new species to consumers is challenging owing to consumers’ habits and unfamiliarity with the species. So, we aimed to (i) evaluate the acceptance of weakfish by a panel of Portuguese fish consumers and (ii) create outreach actions – partnerships with local Chefs and press releases – to explain to a broader public what invasive species are and promote the consumption of edible aquatic invasive species. The survey that we conducted to Portuguese fish consumers showed that weakfish has great chances of being well accepted by the public – 90% of consumers would buy weakfish because they appreciated its appearance, flavour, and texture, besides being a wild fish. The outreach actions reached a few million people because 46 online articles were published, and three news pieces broadcasted on national television. Overall, our strategy greatly increased the public’s awareness about invasive species, which can be replicated elsewhere in the world.

scholarly journals Development of Carbon Dioxide Barriers to Deter Invasive Fishes: Insights and Lessons Learned from Bigheaded Carp

Fishes ◽  
2020 ◽  
Vol 5 (3) ◽  
pp. 25
Author(s):  
Cory D. Suski
Keyword(s):  
Carbon Dioxide ◽  
Invasive Species ◽  
Laboratory Experiments ◽  
Lessons Learned ◽  
Aquatic Invasive Species ◽  
Invasive Fish ◽  
Physical Barrier ◽  
Carbon Dioxide Gas ◽  
Invasive Fishes ◽  
Physical Barriers

Invasive species are a threat to biodiversity in freshwater. Removing an aquatic invasive species following arrival is almost impossible, and preventing introduction is a more viable management option. Bigheaded carp are an invasive fish spreading throughout the Midwestern United States and are threatening to enter the Great Lakes. This review outlines the development of carbon dioxide gas (CO2) as a non-physical barrier that can be used to deter the movement of fish and prevent further spread. Carbon dioxide gas could be used as a deterrent either to cause avoidance (i.e., fish swim away from zones of high CO2), or by inducing equilibrium loss due to the anesthetic properties of CO2 (i.e., tolerance). The development of CO2 as a fish deterrent started with controlled laboratory experiments demonstrating stress and avoidance, and then progressed to larger field applications demonstrating avoidance at scales that approach real-world scenarios. In addition, factors that influence the effectiveness of CO2 as a fish barrier are discussed, outlining conditions that could make CO2 less effective in the field; these factors that influence efficacy would be of interest to managers using CO2 to target other fish species, or those using other non-physical barriers for fish.

scholarly journals A Three-Pass Electrofishing Removal Strategy Is Not Effective for Eradication of Prussian Carp in a North American Stream Network

2020 ◽  
Vol 11 (2) ◽  
pp. 485-493
Author(s):  
Jamie T. Card ◽  
Caleb T. Hasler ◽  
Jonathan L.W. Ruppert ◽  
Caitlyn Donadt ◽  
Mark S. Poesch
Keyword(s):  
Invasive Species ◽  
Population Size ◽  
Fish Species ◽  
Red Deer ◽  
Probability Of Detection ◽  
Aquatic Invasive Species ◽  
Gibel Carp ◽  
Invasive Fish ◽  
Stream Network ◽  
Prussian Carp

Abstract Prussian Carp Carassius gibelio, also referred to as Gibel Carp, is a destructive aquatic invasive species, recently found in Alberta, Canada. Three-pass electrofishing is a potential approach to control some aquatic invasive fish species in stream habitats. The objectives of this study were to 1) determine the efficacy of this strategy to control Prussian Carp in connected streams and 2) assess whether population size or the distance to the introduction site would influence removal success. We sampled sites by using electrofishing in tributaries of the Red Deer River in both the summer and fall and detected Prussian Carp at all sites before removal, with >90% probability of detection of this species within the first 120 m of electroshocking efforts. Overall, we were not successful at removing Prussian Carp from the sample sites, and we found that abundances of Prussian Carp were significantly higher postremoval. Removal success related significantly to distance to the introduction site, suggesting that removal may be useful in targeted situations close to the edge of the invasion front.

scholarly journals Modeling the risk of introduction of non-native species by biofouling on ships' hulls: case study of Arzew port (Algeria)

2021 ◽  
Author(s):  
Adel KACIMI ◽  
Abderrahmane BOUDA ◽  
Bilel BENSARI ◽  
Nour El Islam BACHARI ◽  
Fouzia HOUMA
Keyword(s):  
Invasive Species ◽  
Surface Area ◽  
Native Species ◽  
Relevant Information ◽  
Western Mediterranean ◽  
Aquatic Invasive Species ◽  
Indigenous Species ◽  
Species Introduction ◽  
Research Attention ◽  
Environmental Similarity

Abstract Biofouling of ship hulls is considered as one of the oldest vectors for the transfer of aquatic invasive species. However, the introduction of non-native species by ballast water has received much more research attention. In this study, an alternative approach to dealing with biofouling was proposed for the port of Arzew, based on ship characteristics and transit routes. The strategy consisted of calculation of the surface area of biofouling of all ships calling at the port of Arzew during the period (2013–2016), to which was added spatial modeling using a Geographic Information System to highlight the most relevant information. We identified the areas that represented a high risk of species introduction according to their respective ecoregions of origin; those areas that constituted a minor risk, the type of ship that most likely promotes the establishment of non-native species by comparing the environmental similarity of the ecoregions assigned to the different ships with the environmental characteristics of the port of Arzew obtained by satellite imagery. The study showed that over a period of four years, 5,733 ships called at the port of Arzew, accumulating a total surface area of 35 million square meters. These results can be used for invasive species management purposes; such as: the application of specific regulations on ships of a certain tonnage that most promote the transfer of non-indigenous species, as well as their ecoregions of origin that present a great environmental similarity with the western Mediterranean, in order to minimize the transfer of aquatic invasive species.

scholarly journals State of aquatic invasive species in tropical India: An overview

2021 ◽  
Vol 24 (2) ◽  
pp. 13-23
Author(s):  
Atul K. Singh
Keyword(s):  
Invasive Species ◽  
Native Species ◽  
Freshwater Ecosystems ◽  
Aquatic Invasive Species ◽  
Economic Damage ◽  
Invasion Pathways ◽  
Tropical Country ◽  
Predictive Values ◽  
Assessment Protocol ◽  
Freshwater Aquaculture

Abstract India, a megadiverse tropical country is grappling with the rising trend of aquatic invasions. Out of 532 introduced non-native fish, 16 species of freshwater aquaculture and aquarium were assessed invasive by using a risk assessment protocol, ‘Fish Invasiveness Screening Test’. Six major identified invasion pathways of the aquatic invasive species were inadvertent or deliberate releases, escapes, contaminants from hatcheries, river corridors, stowaways and unaided introductions. Invasion mechanism further elucidated the factors promoting successful invasion in freshwater ecosystems. For predictive future performance of invasive fish, the concrete and predictive values based on mean abundance by weight was calculated. Over 28.67% and 29.02 % persistent increased yield of the invasive Tilapia and Common Carp respectively was predicted in the Ganga river in the coming decades. Single species Tilapia invasion facilitated multiple species fish invasion, manifesting in invasion meltdown. The trophic changes due to fish invasion exhibited biotic homogenization with trophic downgrading. Aquatic invasive species were found highly competitive interacting with native species causing serious biodiversity loss, health hazards, and economic damage consequently affecting the ecosystem services. In spite of available regulatory approaches and guidelines to manage aquatic invasive species, fish invasion has been on the rise. This paper suggests modifications and stringent implementation of the existing regulatory mechanisms besides adopting linkages, cutting-edge research on invasion science and modern molecular containment tools for effective management.

scholarly journals Invasion and potential risks of introduced exotic aquatic species in Indian islands

2021 ◽  
Vol 24 (2) ◽  
pp. 76-85
Author(s):  
C. Raghunathan ◽  
T. Mondal ◽  
K. Chandra
Keyword(s):  
Invasive Species ◽  
Native Species ◽  
Water Discharge ◽  
Aquatic Invasive Species ◽  
Island Ecosystems ◽  
Wide Range ◽  
Potential Risks ◽  
Nicobar Islands ◽  
High Degree ◽  
Detrimental Impact

Abstract India is endowed with a wide range of ecosystems, of which oceanic island ecosystems viz. Andaman and Nicobar and Lakshadweep are unique and ecologically fragile because of the high degree of endemism in species composition. Altogether 25 species under different faunal groups such as cnidarians, polychaetes, cirripedes, mollusks, and ascidians are reported as invasive species in Indian islands, of which 24 species are found in Andaman and Nicobar Islands, while 4 species are available in Lakshadweep. Ship-mediated invasions, especially ballast water discharge and ship-hull fouling, are the major source of invasions as these islands are located in the vicinity of the international sea route. In the present paper, we have represented these non-native species of fauna and flora to discriminate and identify them as non-native or invasive. This study deals with the diversity and distribution of aquatic invasive species in islands and their detrimental impact on the island ecosystem.

scholarly journals Conservation paradox of giant arapaima Arapaima gigas (Schinz, 1822) (Pisces: Arapaimidae): endangered in its native range in Brazil and invasive in Indonesia

2020 ◽  
pp. 47
Author(s):  
Jana Marková ◽  
Rikho Jerikho ◽  
Yusli Wardiatno ◽  
Mohammad Mukhlis Kamal ◽  
André Lincoln Barosso Magalhães ◽  
...  
Keyword(s):  
Invasive Species ◽  
Biodiversity Conservation ◽  
Native Species ◽  
The Other ◽  
Native Range ◽  
Aquatic Animals ◽  
Predatory Behaviour ◽  
Climate Matching ◽  
Arapaima Gigas ◽  
Species Establishment

Ornamental aquaculture is known to be one of the main sources of non-native species and Indonesia has been identified as one of the leading suppliers of these organisms worldwide. Released or escaped ornamental aquatic animals can establish new populations and become invasive. On the other hand, some invasive species can be also endangered in their native range, which is called the “Biodiversity Conservation Paradox”. This is true for Arapaima gigas, one of the popular ornamental creatures and the largest bony fish of all, which is threatened in its native range in parts of Amazonia and which has been found to occur in various localities in Java and Sumatra in Indonesia. Based on climate matching we found the vast majority of Indonesian territory to be suitable for this species establishment. Keeping in mind the size and predatory behaviour of A. gigas, we discussed possible consequences of its spread and impacts on native biota in Indonesia.

scholarly journals Resaca supports range expansion of invasive apple snails (Pomacea maculata Perry, 1810; Caenogastropoda: Ampullariidae) to the Rio Grande Valley, Texas

Check List ◽  
2017 ◽  
Vol 13 (3) ◽  
pp. 2134 ◽  
Author(s):  
Kathryn E. Perez ◽  
Victoria Garcia Gamboa ◽  
Caitlin M. Schneider ◽  
Romi L. Burks
Keyword(s):  
Invasive Species ◽  
Native Species ◽  
Rio Grande Valley ◽  
Rio Grande ◽  
Oxbow Lakes ◽  
Native Range ◽  
River Channels ◽  
Fish Hatchery ◽  
Pomacea Maculata ◽  
Native Invasive

Resacas, or oxbow lakes, form from old river channels. In the Rio Grande, resacas provide habitat for diverse wildlife, including native and non-native species. Biologists unexpectedly found pink egg masses on emergent vegetation (November 2015) and later adult apple snails (May 2016) within a resaca at a former fish hatchery in Brownsville, Texas. This report extends the non-native range of Pomacea maculata Perry, 1810 by 429 km southeast in Texas. Our findings imply that abandoned waterbodies, such as fish hatcheries, can act as unrecognized conduits for non-native invasive species.

Genome Size Variation Between the Native and Invasive Ranges of Senecio madagascariensis (Asteraceae)

2020 ◽  
Vol 45 (1) ◽  
pp. 212-218
Author(s):  
Bruno Dematteis ◽  
María S. Ferrucci ◽  
Pablo Ortega-Baes ◽  
Juan P. Coulleri
Keyword(s):  
Invasive Species ◽  
Genome Size ◽  
Ploidy Level ◽  
Native Species ◽  
Size Variation ◽  
Published Data ◽  
Native Range ◽  
Genome Size Variation ◽  
Invasive Range ◽  
Bioclimatic Variables

Abstract—Invasive species must colonize new habitats away from their native range; therefore, factors affecting plant dispersal play a key role in invasion. The ploidy level and genome size (or Cx value) can affect the dispersal traits, physiology, and ecology of invasive species over a few generations, generating individuals that can face fluctuating environments, exploit new ones, and compete with native species. Several studies have demonstrated that invasive species tend to have smaller genomes than their noninvasive congeners, which is explained by the role that the Cx value plays in phenotypic evolution and ecological tolerance. In order to test this hypothesis, we compare the genome size variation in Argentine populations (invasive range) vs. South African populations (native range) of S. madagascariensis. To meet our goals, we estimated the Cx value of invasive populations collected on field trips, while for native populations we considered available published data. We extracted the bioclimatic variables in order to establish the ecological amplitude in which the genome sizes may be distributed. Our results evidenced larger genomes in the invasive range than in the native one. Furthermore, we propose that large genomes of the invasive populations could be mainly explained by the founder genotypes effect and the anthropogenic introduction of this species to Argentina. In addition, we demonstrated that genotypes with big genomes can tolerate different environmental conditions from those of their native range. Therefore, they could present a greater ability for colonizing new environments. The implications and importance of ploidy level in the invasion of S. madagascariensis are discussed.

scholarly journals Inter-basin water transfers and the expansion of aquatic invasive species

2018 ◽  
Author(s):  
Belinda Gallardo ◽  
David C. Aldridge
Keyword(s):  
Invasive Species ◽  
Native Species ◽  
Freshwater Mussels ◽  
Aquatic Invasive Species ◽  
Water Transfers ◽  
Water Abstraction ◽  
Freshwater Invasion ◽  
New Locations ◽  
Basin Water ◽  
Impact On Biodiversity

AbstractInter-basin Water Transfers (IBWT) are recognized as one of the major pathways of freshwater invasion. They provide a direct link between previously isolated catchments and may modify the habitat conditions of the receiving waters such that they become more favourable for the establishment of invasive species. Combined, IBWT and invasive species will intensify the stress upon native species and ecosystems. Using the Severn and Thames Rivers-two of the largest river systems in Great Britain—as a case study, here we assess the potential influence of IBWT on the expansion of invasive species and thus their impact on biodiversity conservation. The Thames Valley is subject to extensive water abstraction, and an increasing population means that supplemented flow from the River Severn is being considered. Multi-scale Suitability Models, based on climate and water chemistry respectively, provided novel evidence that there is serious risk for further spread of invasive species in the focus area, particularly of the quagga mussel, a recent invader of the Thames River. Native freshwater mussels are particularly vulnerable to changing environmental conditions, and may suffer the decrease in alkalinity and increase in sedimentation associated with an IBWT from the lower Severn to the upper Thames. Regional models suggest considerable overlap between the areas suitable for three vulnerable native freshwater mussels and the expansion of invasive species that negatively impact upon the native mussels. This study illustrates the use of novel spatially-explicit techniques to help managers make informed decisions about the risks associated with introducing aquatic invasive species under different engineering scenarios. Such information may be especially important under new legislation (e.g. EU Invasive Species Regulation No 1143/2014) which increases the responsibility of water managers to contain and not transfer invasive species into new locations.

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