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Biodiversity and Conservation

, Volume 27, Issue 11, pp 3037–3046 | Cite as

Invasive aquatic pets: failed policies increase risks of harmful invasions

  • Jiří Patoka
  • André Lincoln Barroso Magalhães
  • Antonín Kouba
  • Zen Faulkes
  • Rikho Jerikho
  • Jean Ricardo Simões Vitule
Open Access
Commentary
Part of the following topical collections:
  1. Invasive species

Abstract

Businesses in the pet trade collect and transport many aquatic species around the globe, and some of these individuals are released into new habitats. Some jurisdictions have introduced laws intended to regulate this trade, but these regulations have rarely had the desired effects. Laws regarding pets and the pet trade are often poorly communicated, poorly enforced, and not aligned with hobbyists’ beliefs. Consequently, some laws may increase the number of unwanted introductions instead of decreasing them. A significant change in approach is needed, involving far greater communication with scientists, administrations, politicians, the pet industry, and pet owners, promoting euthanasia of unwanted pets rather than release, and the creation and promotion “white lists” of low risk species that can be sold in the pet trade.

Keywords

Invasive species Legislation Ornamental animal Pet trade Conservation 

The rate of new established non-native species is predicted to further increase as a result of increasing global trade (Blackburn et al. 2011; Ellis et al. 2013). Importantly, the introduction of non-native organisms might cause negative impacts, even before the establishment phase of the invasion process when the population is not self-sustaining (e.g. Blackburn et al. 2011; Cunico and Vitule 2014). For example, serrated caulerpa (Caulerpa scalpelliformis var. denticulata; Falcão and Széchy 2005), guppies (Poecilia reticulata; Cunico et al. 2009) and red swamp crayfish (Procambarus clarkii; Banci et al. 2013), were dumped from aquariums in a bay and streams located in Rio de Janeiro, Paraná and São Paulo States in Brazil. The first two negatively changed fish community structures, and the crayfish preyed on native toads (Rhinella ornata). In the Chacamax River, Chiapas State, Mexico, explosive growth of an introduced population of stoichiometrically unique, phosphorus (P)-rich armoured catfish (Pterygoplichthys sp.) transformed stream nutrient dynamics by altering nutrient storage and remineralization rates (Capps and Flecker 2013). Once established in the wild, non-native invasive organisms can be very difficult, if not impossible, to eradicate (Lowe et al. 2000). Removing invasive species is not always straightforward because eradication typically involves long term campaigns, huge effort/costs and can affect native species. If the process is not done properly, “eradication success” could be declared too soon, the target invasive species is no longer subjected to control pressure, and the invasive species can “return”, a situation known as the Lazarus Effect (Clout and Veitch 2002; Lockwood et al. 2013).

Because biological invasions cause significant environmental and economic losses (Vitousek et al. 1996), and the pet industry is one of the key pathways for introduction of non-native invasive species (Magalhães and Vitule 2013), policymakers have initiated both national and international restrictions on this trade. For example, certain pet-traded aquatic species, such as marbled crayfish (Procambarus virginalis) and the red-eared slider (Trachemys scripta elegans), are among those banned by European Union Regulation No. 1143/2014. The common yabby (Cherax destructor) and walking catfish (Clarias batrachus) are banned by the American Federal Register 67 FR 48855 under the Lacey Act (18 U.S.C. 42). In November 2012, the European Commission implemented Decision 2012/697/EU banning the import of all apple snails (genus Pomacea). Thus, apple snails should not be introduced into or allowed to spread within the European Union, which means retailers should not be importing, breeding or selling these snails (OATA 2016). The United States Department of Agriculture, Animal and Plant Health Inspection Service (USDA-APHIS) implemented regulations in 2006 to prohibit the import or interstate movement of all members of the Family Ampullariidae, such as the zebra apple snail (Asolene spixi; Putnam 2015). In Queensland, Australia, salamanders of the genus Cynops are considered potential threats to the local aquatic fauna and, as consequence, their importation is forbidden by the Land Protection Act of 2002 (Queensland Government 2012). Import of non-native live crayfishes is prohibited in France, Portugal and Japan, because of ecological concerns (Lodge et al. 2012). The aquarium ambulia (Limnophila sessiliflora), hydrilla (Hydrilla verticillata), and the “killer algae” (Caulerpa taxifolia) were placed on the Act No. 36 of 1983 and the Federal Noxious Weed List of 1999 making it illegal to import these species into the U.S.A. and South Africa, respectively (Martin and Coetzee 2011; Díaz et al. 2012).

In contrast, other less engaged governments support the pet trade. For example, Brazil allows the trade of 2000 ornamental fish species outside of the Brazilian Amazon (Normative Instruction No. 16/2014) and the import of lionfish species such as the common lionfish (Pterois miles), radiata lionfish (P. radiata) and Hawaiian lionfish (P. sphex), other than the highly invasive red lionfish (P. volitans), which is surprisingly completely omitted in the instruction (Normative Instruction No. 202/2008). The third type of approach to non-native species is to simply ignore the threat or overlook this issue. For instance, with rare exceptions (i.e., piranhas, Pygocentrus and Serrasalmus spp.), it is possible to import any ornamental aquatic species of commercial interest in Chile, even species with negative history of invasions worldwide (Campos-Larrain and Valenzuela-Alfaro 1996). Since November 1993, everybody in Switzerland needs a concession for releasing non-native fish and crayfish in natural and artificial water-bodies (public and privately owned), and strict legislation, however, does not prevent crime (Pöckl 1999). And in Israel, the Israeli law (National Parks and Nature Reserves Act 1998) protects all freshwater molluscs, non-natives included such as the aquarium species giant ramshorn snail (Marisa cornuarietis), assassin snail (Anentome helena), acute bladder snail (Physella acuta) and the golden apple snail (Pomacea diffusa) (Yanai et al. 2017).

The effectiveness of national and international restrictions on the pet trade is questionable. In Brazil, the availability of the banned P. clarkii in pet stores, e-commerce and ornamental aquaculture indicates that compliance of Brazilian Federal Ordinance No. 5 of 2008 is not fully respected (Magalhães and Andrade 2015). The Normative Instruction 39 of 1999 prohibits the import of crustaceans (Ministério da Agricultura 1999), but the ornamentals African giant filter shrimp (Atyopsis gabonensis), skunk cleaner shrimp (Lysmata amboinensis), peppermint shrimp (L. wurdemanni), Malawa shrimp (Caridina pareparensis var. parvidentata), and red cherry shrimp (Neocaridina davidi) are easily marketed in aquarium stores and online auctions in Brazil (Magalhães and Andrade 2015; MercadoLivre 2017a, b, c). In the same way, the Normative Instruction 05 of 2004 prohibits the trade of invasive sun coral (Tubastrea spp.; Ministério do Meio Ambiente 2004), but the species also is being sold in online auctions in the city of Rio de Janeiro, Brazil (MercadoLivre 2017d). The Federal Law 202/08 for marine ornamental fish does not authorize the importation of fish species with the expression “sp.”, but in October 2009, individuals of non-native clown goby (Gobiodon sp.) were being sold in aquarium trade in the city of São Paulo (ReefCorner 2009). The Ordinance No. 93 of 1998 was enacted to regulate the management of non-native amphibian and reptiles, and this act emphasizes trade regulation of these non-native taxa through vectors such as importation via the pet trade. Although the Brazilian government has declared the importation of non-native herpetofauna illegal (Brasil 1998), individuals of aquatic species such as the African clawed frog (Xenopus laevis), the axolotl (Ambystoma mexicanum), Spanish ribbed newt (Pleurodeles waltl), the snapping turtle (Chelydra serpentina), and T. scripta elegans are still sold in Brazil (Magalhães and São-Pedro 2012). Moreover, the recent availability and ease in purchase of illegals species on Brazilian market, such as lemonpeel angelfish (Centropyge flavissima), striped catfish (Pangasianodon hypophthalmus), snakeskin gourami (Trichopodus pectoralis), giant gourami (Osphronemus gourami), snakehead (Channa argus), forest snakehead (C. lucius), Indonesian snakehead (C. micropeltes), striped snakehead (C. striata), and C. batrachus indicate that the compliance of Normative Instructions No. 202 and 203/2008 is not respected (Magalhães 2015). The Normative Instruction No. 204 of 2008 permits the sale of freshwater stingrays such as the porcupine river stingray (Potamotrygon hystrix) with a maximum disc width of 14 cm, but bigger individuals (> 14 cm) are sold among Brazilian aquarium hobbyists via face-to-face personal contacts (Magalhães et al. 2017). In Germany, where fishkeeping is well known and widespread, aquarium dumping is prohibited by the German AnimalWelfare Act [113]; §3 Abs. 3, 4 TierSchG, however, ignoring this issue, aquarium hobbyists continue to systematically release ornamental species of such as the bristlenose pleco (Ancistrus sp.), convict cichlid (Amatitlania nigrofasciata), spotted tilapia (Pelmatolapia mariae), Kaira River prawn (Macrobrachium dayanum) and the tape grass (Vallisneria spiralis) in Gillbach stream, North Rhine-Westphalia State (Lukas et al. 2017). In England, the purchase of the illegal fish species Chinese sucker (Myxocyprinus asiaticus) indicates that the compliance of Prohibition Order 1998 is violated (Hill 2013). Also the sales of illegal and risky crayfish, such as C. destructor, spiny-cheek crayfish (Faxonius limosus), and P. clarkii indicate that compliance of Prohibition Order of 1996 is not being highly respected (Clarke 2007; Hill 2013). In Malaysia, the Fisheries Act 1985-Fisheries Regulations (Prohibition of Import, etc., for fish) (Amendment) 2011 does not allow the import of hybrid cichlid (Amphilophus trimaculatus × A. citrinellus) but, many individuals are still sold in Malaysian aquarium trade (Ng 2016). In Indonesia, the Regulation No. 41/PERMEN-KP/2014 bans the import of selected 152 non-native fish species. In this law, fishes are defined as “all types of organism in which all or part of its life cycle is in an aquatic environment”. Paradoxically, many banned species such as P. clarkii, Midas cichlid (A. citrinellus), and the auratus cichlid (Melanochromis auratus) are cultured and produced in Indonesia in huge quantities because it is legal to release non-native species into the wild and indeed, local people do so for further exploiting. Also, some local people have bred the banned non-native P. clarkii in Indonesia for several years (Patoka J. 2017 unpublished data). Despite this, the general regulation of invasive species PERMEN LHK P94/2016 categorizes this crayfish as an invasive species not occurring in Indonesian territory. The ornamental plant, the water chestnut (Trapa natans) is banned for sale by the Washington Department of Agriculture, but currently is available for aquarium hobbyists in Washington State, U.S.A. (Strecker et al. 2011) and also in the Czech Republic (Patoka J., unpublished data). Demand for pets may drive the unsustainable collection of species from their native habitats such as the freshwater angelfish (Pterophyllum scalare) in Peruvian Amazonia (Juvonen and Salo 2004), and releasing individual pets into new habitats, either accidentally or deliberately (Vitule et al. 2014) like P. scalare introduced by hobbyists in Singapore (Liew et al. 2012).

Even if the ideas behind some legislative measures were good, as in the case of European Union and American regulations, hobbyists often do not know reasons why keeping of some species is banned and are not aware the risks and consequences of biological invasions. If faced with improperly communicated regulations, they may tend to release banned pets to the natural environment to avoid possible “complications”. Furthermore, releasing pets is usually perceived by the public as more ethical than euthanasia, and mistakenly thought to provide ecological benefits (Drake et al. 2015). We would like to highlight that all the approaches mentioned above may have, in fact, dramatically devastating consequences for native biota and entire ecosystems. The implementation of new strict prohibitions, particularly if combined with penalties, may lead hobbyists to consider releasing their unwanted pets to get rid of the “problem”. Conversely, permissive policies (including no policy at all) that allow pets to be moved outside their native habitats may have similarly negative consequences. It is well demonstrated by cases such as P. volitans and T. scripta elegans, the fish and turtle which are listed in the top 100 of the world’s worst invasive species (Lowe et al. 2000), and crayfish P. virginalis (Fig. 1). These are successful invaders in many regions where introduced (Whitfield et al. 2002; Ramsay et al. 2007; Patoka et al. 2016).
Fig. 1

Selected well-known invasive aquatic species traded as ornamentals in the world: a marbled crayfish (Procambarus virginalis), b red-eared slider (Trachemys scripta elegans), c African clawed frog (Xenopus laevis), d red lionfish (Pterois volitans), e ambulia (Limnophila sessiliflora), f plastic plant as an alternative to avoid invasions by hobbyists

Obviously, ameliorating the pet trade’s contribution to the current sixth mass extinction will call for intensified efforts. Even if the legislation in some countries seems to be sufficient, the international cooperation regarding mitigation of biological invasions must be enforced (Perrings et al. 2010; Lucy et al. 2016). Limiting species loss will require intensive communication between scientists, politicians and other stakeholders (i.e., pet industry), and educating the general public to the value of conserving biodiversity and entire ecosystems (Hulme 2015). A communication bridge which unites scientists, politicians, and the pet industry is a crucial point of effective conservation of native biota and whole ecosystems (Azevedo-Santos et al. 2017). Therefore, intensive information campaigns must happen before new restrictions related to potentially invasive species are initiated and enacted. We suggest the following points:
  1. (i)

    Reformulate the aforementioned and other unsuitable laws with the involvement of environmental agencies so that they do not continue to be “dead letters” (laws that exist but are not implemented);

     
  2. (ii)

    Make these laws more accessible to layperson (i.e. specialized media such as pet magazines/journals/books, e-commerce, importers, distributors, wholesalers, retailers, aquarium hobbyists, clubs and societies); environmental agencies must seek new communication tools (e.g., WhatsApp Messenger or other smartphone apps) that provide an effective connection to hobbyists. For instance, The Australian Department of Fisheries and The Florida Fish and Wildlife Conservation Commission and the Environment Agency, Scottish Natural Heritage, Natural Resources Wales and the Scottish Environment Protection Agency have developed free apps named WA PestWatch and The Report Florida Lionfish and PlantTracker respectively to provide awareness to laypersons and to assist the detection of new invasions to keep inland and marine waters free of non-native fish and aquatic plants (http://www.fish.wa.gov.au/Sustainability-and-Environment/Aquatic-Biosecurity/Identifying-Pests-And-Diseases/Pages/WA-PestWatch.aspx; http://www.floridawildlifemagazine.com/report-florida-lionfish-app.html); also non-stop “pest hotlines” such as Fishwatch hotline and the “General Biosecurity Obligation” (i.e., everyone is responsible for managing biosecurity risks) under Biosecurity Act 2014 in Queensland, Australia are recommended in this regard;

     
  3. (iii)

    Encourage humane disposal, mainly euthanasia, of unwanted pets. This diverges from what scientific literature and educational campaigns in many countries usually suggest. We do not recommend “reverse logistics”, such as contacting retailers for possible returns, donating to a public place (e.g., school, hospital, and malls), using an animal adoption fair/website, or giving or trading with other hobbyists. The recipients are typically laypersons who can release these pets improperly, thus maintaining the interminable cycle of intentional introductions. The best way to eliminate aquatic plants is to ensure that they are not able to be transported to an area where they are likely to reproduce themselves. Acceptable means of disposal include incinerating, land filling, desiccating, and composting - only if plants are exclusively submerged and if applied away from surface waters. Other possible ways are microwaving, freezing, and treatment with acetic acid;

     
  4. (iv)

    Hobbyists should receive instructions from environmental agencies, universities and NGOs regarding good practices for discarding undesired pets; vendors should mandatorily provide a flyer/pamphlet and packaging paper on pet disposal with every sales; messages about not releasing pets into wild should be printed on the plastic bags in which animals and plants are transported home;

     
  5. (v)

    Environmental agencies should work more with social networks (e.g., Facebook, Twitter, virtual pet-shops, and pet-industry websites) to post alert messages in the pictures of non-native species for sale, indicating life traits (e.g., size when fully grown, diet, parthenogenesis, seeds adapted for dispersal by water movements, plants with asexual reproductive output) and behaviour (e.g., aggressiveness, territoriality, corals grow out of control, aquatic plants having ability to form dense floating mats over still or slow-flowing water) to reduce further pet dumping;

     
  6. (vi)

    Stimulate citizen science nationally and globally with the goal of detecting and controlling invasive pets; development and sharing of user-friendly identification keys are crucial;

     
  7. (vii)

    Restrict or prohibit trade in physical stores, e-commerce and face-to-face personal contacts among hobbyists of pet species of concern, such as Tubastrea spp., Pomacea spp., P. clarkii, X. laevis, P. volitans, Channa spp., T. scripta elegans, C. taxifolia and H. verticillata;

     
  8. (viii)

    Stimulate campaigns to replace high-risk species on the market by non-invasive congeners listed on the “white list” or “clean list” considered to be acceptable for stocking and culture, hobby keeping etc.; starting locally and consequently working with an international network and community of hobbyists to develop a campaign to replace invasive species with less risky ones (including use of silicone resin/rubber and plastic imitations instead invasive live corals or plants; Fig. 1);

     
  9. (ix)

    Environmental agencies and universities should use DNA barcoding to efficiently distinguish of invasive aquatic pets from non-invasive related species (e.g., freshwater fishes: genera Pygocentrus, Piaractus, Puntius; marine fishes: genera Centropyge, Pomacanthus, Pterois; corals: genera Palythoa, Tubastrea, Xenia; crayfish: genera Procambarus, Cherax, Faxonius, plants: genera Cabomba, Caulerpa, Hydrilla) and thus, may be helpful with enforcing a ban on the import of identified invasive species.

     
  10. (x)

    Stoichiometrically unique aquarium invaders would be expected to alter nutrient dynamics after invasion if they attain high biomass relative to other species and/or if they modify the flux of limiting nutrients in invaded ecosystems. Thus, ecological stoichiometry can be employed to help predict which species have the potential to exert strong influences on ecosystem structure and function, and allow policymakers to initiate targeted actions to restrict the import of specific organisms in aquarium/pet trade.

     

These suggestions can be part of the effort to transposed into widespread and enforceable legislation and control intermittent colonization and propagule pressure (sensu Lockwood et al. 2005, 2009; Frehse et al. 2016), for instance, Cassey et al. (2018) stressed that propagule pressure is indeed the most consistent and strongest determinant of alien species establishment and that we need to underpin a clear policy and management target for slowing invasion rates by reducing propagule globally. These strategies are in line with the principles of Aichi Biodiversity Target 9 of the Strategic Plan 2020 of the Convention on Biological Diversity. This target calls for identifying the pathways by which non-native species are introduced and focusing prevention efforts on these (https://www.cbd.int/sp/targets). The intensive information and awareness campaigns aimed on general public such as the Southern California Caulerpa Action Team, The Reduce Invasive Pet and Plant Escapes (RIPPLE) Campaign, Nab the Aquatic Invaders, Habitattitude, Stop Aquatic Hitchhikers, Aquatic Invaders, The National Lionfish Project and The Sun-Coral Project (Anderson 2005; Patterson et al. 2010; CABI 2012; Seekamp et al. 2016; Creed et al. 2017, Michigan Invasive Species 2018) before new restrictions or permissions related to potentially invasive species must be implemented. As we enter the Anthropocene, humanity is reorganizing the biosphere, and it is alarming that native biota worldwide is also jeopardized by missing, incomplete, and improperly communicated legislation. The costs related with biological invasions are high and to safeguard aquatic ecosystems in the world, invasive aquatic pets should be moved to the top, not the bottom, of the government’s environmental priorities lists.

Notes

Acknowledgements

Jean R. S. Vitule acknowledges the projects CNPq (No. 310850/2012-6 and No. 303776/2015-3), André L. B. Magalhães the CAPES scholarship, Antonín Kouba the Ministry of Education, Youth and Sports of the Czech Republic − projects “CENAKVA” (No. CZ.1.05/2.1.00/01.0024) and “CENAKVA II” (No. LO1205 under the NPU I program), and Jiří Patoka the Internal Grant Agency of the Czech University of Life Sciences Prague “CIGA” (project No. 20182013).

References

  1. Anderson LWJ (2005) California’s reaction to Caulerpa taxifolia: a model for invasive species rapid response. Biol Invasions 7:1003–1016CrossRefGoogle Scholar
  2. Azevedo-Santos VM, Fearnside PM, Oliveira CS, Padial AA, Pelicice FM, Lima DP Jr, Simberloff D, Lovejoy TE, Magalhães ALB, Orsi ML, Agostinho AA, Esteves FA, Pompeu PS, Laurance WF, Petrere M Jr, Mormul RP, Vitule JRS (2017) Removing the abyss between conservation science and policy decisions in Brazil. Biodivers Conserv 26:1745–1752CrossRefGoogle Scholar
  3. Banci KRS, Viera NFT, Marinho PS, Calixto PO, Marques OAV (2013) Predation of Rhinella ornata (Anura, Bufonidae) by the alien crayfish (Crustacea, Astacidae) Procambarus clarkii (Girard, 1852) in São Paulo, Brazil. Herpetol Notes 6:339–341Google Scholar
  4. Blackburn TM, Pyšek P, Bacher S, Carlton JT, Duncan RP, Jarošík V, Wilson JRU, Richardson DM (2011) A proposed unified framework for biological invasions. Trends Ecol Evol 26:333–339CrossRefPubMedGoogle Scholar
  5. Brasil (1998) Ministério do Meio Ambiente. Portaria No. 93, de 7 de julho de 1998. Fica proibida a importação de espécimes vivos para fins de criação com fins comerciais, manutenção em cativeiro como animal de estimação ou ornamentação e para a exibição em espetáculos itinerantes e fixos, salvo em jardins zoológicos, os seguintes taxa: I. invertebrados, II. Anfíbios (exceto Rana catesbeiana - rã touro), III. Répteis, IV. Ave da espécie Sicalis flaveola e suas subespécies, V. mamíferos das Ordens: Artiodactyla (exceto os considerados domésticos para fins de operacionalização do IBAMA), Carnivora, Cetacea, Insectivora, Lagomorpha, Marsupialia, Pennipedia, Perissodactyla, Proboscidea, Rodentia e Sirenia. DOU 128:1–7Google Scholar
  6. CABI - Caribbean and Latin America (2012) Stop the invasion of alien species—Mitigating the Threats of Invasive Alien Species in the Insular Caribbean (MTIASIC). Saint Augustine, Trinidad and TobagoGoogle Scholar
  7. Campos-Larrain M, Valenzuela-Alfaro M (1996) Chilean legislation for the control of diseases of aquatic species. Rev Sci Tech 15:675–684CrossRefPubMedGoogle Scholar
  8. Capps KA, Flecker AS (2013) Invasive aquarium fish transform ecosystem nutrient dynamics. Proc R Soc B 280:20132418CrossRefGoogle Scholar
  9. Cassey P, Delean S, Lockwood JL, Sadowski J, Blackburn TM (2018) Dissecting the null model for biological invasions: a meta-analysis of the propagule pressure effect. PLoS Biol 16:e2005987CrossRefPubMedPubMedCentralGoogle Scholar
  10. Clarke M (2007) Shops selling illegal tropical crayfish. http://www.geocities.jp/ideryusei/20071130PracticalFishkeeping.htm. Accessed 14 Dec 2017
  11. Clout M, Veitch C (2002) Turning the tide of biological invasion: the potential for eradicating invasive species. IUCN SSC Invasive Species Specialist Group, GlandGoogle Scholar
  12. Creed JC, Junqueira AOR, Fleury BG, Mantelatto MC, Oigman-Pszczol SS (2017) The Sun-Coral Project: the first social-environmental initiative to manage the biological invasion of Tubastraea spp. in Brazil. Manag Biol Invasion 8:181–195CrossRefGoogle Scholar
  13. Cunico AM, Vitule JRS (2014) First records of the European catfish, Silurus glanis Linnaeus, 1758 in the Americas (Brazil). BioInvasions Rec 3:117–122CrossRefGoogle Scholar
  14. Cunico AM, Graça WJ, Agostinho AA, Domingues WM, Latini JD (2009) Fish, Maringá urban streams, Pirapó river drainage, upper Paraná river basin, Paraná State, Brazil. Check List 5:273–280CrossRefGoogle Scholar
  15. Díaz S, Smith JR, Zaleski SF, Murray SN (2012) Effectiveness of the California state ban on the sale of Caulerpa species in aquarium retail stores in southern California. Environ Manag 50:89–96CrossRefGoogle Scholar
  16. Drake DAR, Mercader R, Dobson T, Mandrak NE (2015) Can we predict risky human behaviour involving invasive species? A case study of the release of fishes to the wild. Biol Invasions 17:309–326CrossRefGoogle Scholar
  17. Ellis EC, Kaplan JO, Fuller DQ, Vavrus S, Goldewijk KK, Verburg PH (2013) Used planet: a global history. Proc Natl Acad Sci USA 110:7978–7985CrossRefPubMedGoogle Scholar
  18. Falcão C, Széchy MTM (2005) Changes in shallow phytobenthic assemblages in southeastern Brazil, following the replacement of Sargassum vulgare (Phaeophyta) by Caulerpa scalpelliformis (Chlorophyta). Bot Mar 48:208–217CrossRefGoogle Scholar
  19. Frehse FA, Braga RR, Nocera GA, Vitule JRS (2016) Non-native species and invasion biology in a megadiverse country: scientometric analysis and ecological interactions in Brazil. Biol Invasions 18:3713–3725CrossRefGoogle Scholar
  20. Hill N (2013) Illegal fish still on sale in the UK. https://www.practicalfishkeeping.co.uk/blog/articles/illegal-fish-still-on-sale-in-the-uk. Accessed 14 Dec 2017
  21. Hulme PE (2015) Invasion pathways at a crossroad: policy and research challenges for managing alien species introductions. J Appl Ecol 52:1418–1424CrossRefGoogle Scholar
  22. Juvonen SK, Salo J (2004) Sustainable use of ornamental fish populations in Peruvian Amazonia. Lyonia 7:53–59Google Scholar
  23. Liew JH, Tan HH, Yeo DCJ (2012) Some cichlid fishes recorded in Singapore. Nat Singap 5:229–236Google Scholar
  24. Lockwood JL, Cassey P, Blackburn T (2005) The role of propagule pressure in explaining species invasions. Trends Ecol Evol 20:223–228CrossRefPubMedGoogle Scholar
  25. Lockwood JL, Cassey P, Blackburn TM (2009) The more you introduce the more you get: the role of colonization pressure and propagule pressure in invasion ecology. Divers Distrib 15:904–910CrossRefGoogle Scholar
  26. Lockwood JL, Hoopes MF, Marchetti MP (2013) Invasion ecology. Wiley, ChichesterGoogle Scholar
  27. Lodge DM, Deines A, Gherardi F, Yeo DC, Arcella T, Baldridge AK, Barnes MA, Chadderton WL, Feder JL, Gantz CA (2012) Global introductions of crayfishes: evaluating the impact of species invasions on ecosystem services. Annu Rev Ecol Evol S 43:449–472CrossRefGoogle Scholar
  28. Lowe S, Browne M, Boudjelas S, De Poorter M (2000) 100 of the world’s worst invasive alien species: a selection from the global invasive species database. The Invasive Species Specialist Group (ISSG) a specialist group of the Species Survival Commission (SSC) of the World Conservation Union (IUCN)Google Scholar
  29. Lucy FE, Roy H, Simpson A, Carlton JT, Hanson JM, Magellan K et al (2016) INVASIVESNET towards an international association for open knowledge on invasive alien species. Manag Biol Invasions 7:131–139CrossRefGoogle Scholar
  30. Lukas JAY, Jourdan J, Kalinkat G, Emde S, Miesen FW, Jungling H, Cocchiararo B, Bierbach D (2017) On the occurrence of three non-native cichlid species including the first record of a feral population of Pelmatolapia (Tilapia) mariae (Boulenger, 1899) in Europe. R Soc Open Sci 4:170160CrossRefPubMedPubMedCentralGoogle Scholar
  31. Magalhães ALB (2015) Presence of prohibited fishes in the Brazilian aquarium trade: effectiveness of laws, management options and future prospects. J Appl Ichthyol 31:170–172CrossRefGoogle Scholar
  32. Magalhães ALB, Andrade RF (2015) Has the import ban on non-native red swamp crayfish (Crustacea: Cambaridae) been effective in Brazil? Neotrop Biol Conserv 10:48–52Google Scholar
  33. Magalhães ALB, São-Pedro VA (2012) Illegal trade on non-native amphibians and reptiles in southeast Brazil: the status of e-commerce. Phyllomedusa 11(2):155–160CrossRefGoogle Scholar
  34. Magalhães ALB, Vitule JRS (2013) Aquarium industry threatens biodiversity. Science 341:457CrossRefPubMedGoogle Scholar
  35. Magalhães ALB, Orsi ML, Pelicice FM, Azzevedo-Santos VM, Vitule JRS, Lima-Junior DP, Brito MFG (2017) Small size today, aquarium dumping tomorrow: sales of juvenile non-native large fish as an important threat in Brazil. Neotrop Ichthyol 15:e170033Google Scholar
  36. Martin GD, Coetzee JA (2011) Pet stores, aquarists and the internet trade as modes of introduction and spread of invasive macrophytes in South Africa. Water SA. 37:371–380CrossRefGoogle Scholar
  37. MercadoLivre (2017a) Camarão red cherry Neocaridina davidi. https://lista.mercadolivre.com.br/peixes/camar%C3%A3o-red-cherry-neocaridina-davidi. Accessed 14 Dec 2017
  38. MercadoLivre (2017b) 2 Cmarões Stenopus e 2 Camarões Bailarinos. https://produto.mercadolivre.com.br/MLB-945086541-2-camaroes-stenopus-e-2-camaroes-bailarinos-_JM. Accessed 15 Dec 2017
  39. MercadoLivre (2017c) Camarão Cleaner. https://produto.mercadolivre.com.br/MLB-918150242-camaro-cleaner-_JM. Accessed 15 Dec 2017
  40. MercadoLivre (2017d) Sun coral yellow importado. https://produto.mercadolivre.com.br/MLB-705984070-sun-coral-yellow-importado-_JMmer. Accessed 14 Dec 2017
  41. Michigan Invasive Species (2018) What are invasive species? https://www.michigan.gov/invasives. Accessed 09 May 2018
  42. Ministério da Agricultura (1999) Instrução Normativa do Ministério da Agricultura, Pecuária e Abastecimento (MAPA), Nº 39, de 04 de novembro de 1999. Suspender, temporariamente, a entrada no Território Nacional de todas as espécies de crustáceos, quer de água doce ou salgada, em qualquer etapa do seu ciclo biológico, inclusive seus produtos frescos e congelados, assim como os cozidos, quando inteiros com suas carapaças ou partes delas, de qualquer procedência. DOU 1:43Google Scholar
  43. Ministério do Meio Ambiente (2004) Reconhecer como espécies ameaçadas de extinção e espécies sobreexplotadas ou ameaçadas de sobreexplotação, os invertebrados aquáticos e peixes, constantes dos Anexos a esta Instrução Normativa. DOU 1:136Google Scholar
  44. Ng C (2016) The ornamental freshwater fish trade in Malaysia. UTAR Agric Sci J 2:7–18Google Scholar
  45. OATA (Ornamental Aquatic Trade Association) (2016) Apple snails. https://ornamentalfish.org/applesnails/
  46. Patoka J, Buřič M, Kolář V, Bláha M, Petrtýl M, Franta P, Tropek R, Kalous L, Petrusek A, Kouba A (2016) Predictions of marbled crayfish establishment in conurbations fulfilled: evidences from the Czech Republic. Biologia 71:1380–1385CrossRefGoogle Scholar
  47. Patterson KM, Power A, Sloan P, Olson S, Chan S, Goettel R (2010) Aquatic Invaders: Sea Grant/AZA project explains pathways to zoo and aquarium audiences. Aquat Invasions 5:115–117CrossRefGoogle Scholar
  48. Perrings C, Burgiel S, Lonsdale M, Mooney H, Williamson M (2010) International cooperation in the solution to trade-related invasive species risks. Ann NY Acad Sci 1195:198–212CrossRefPubMedGoogle Scholar
  49. Pöckl M (1999) Distribution of crayfish species in Austria with special reference to introduced species. Freshwater Crayfish 12:733–750Google Scholar
  50. Putnam A (2015) Apple snails. Tech Bull 8:1–4Google Scholar
  51. Queensland Government (2012) Land Protection Act (Pest and Stock Route Management). Ministry for Natural Resources, Mines and Energy, Queensland, AustraliaGoogle Scholar
  52. Ramsay NF, Ng PKA, O’Riordan RM, Chou LM (2007) The red-eared slider (Trachemys scripta elegans) in Asia: a review. In: Gherardi F (ed) Biological invaders in inland waters: profiles, distribution, and threats. Springer, Dordrecht, pp 161–174CrossRefGoogle Scholar
  53. ReefCorner (2009) Chegou peixes importados na Onda. http://www.reefcorner.org/forum/topic.asp?TOPIC_ID=102504. Accessed 14 Dec 2017
  54. Seekamp E, Mayer JE, Charlebois P, Hitzroth G (2016) Effects of outreach on the prevention of aquatic invasive species spread among organism-in-trade hobbyists. Environ Manag 58:797–809CrossRefGoogle Scholar
  55. Strecker AL, Campbell PM, Olden JD (2011) The aquarium trade as an invasion pathway in the Pacific Northwest. Fisheries 36:74–85CrossRefGoogle Scholar
  56. Vitousek PM, Antonio CM, Loope LL, Westbrooks R (1996) Biological invasions as global environmental change. Am Sci 84:468Google Scholar
  57. Vitule JRS, Sampaio FDF, Magalhães ALB (2014) Aquarium trade: monitor Brazil’s fish sampling closely. Nature 513:315CrossRefPubMedGoogle Scholar
  58. Whitfield PE, Gardner T, Vives SP, Gilligan MR, Courtenay WR Jr, Ray GC, Hare JA (2002) Biological invasion of the Indo-Pacific lionfish Pterois volitans along the Atlantic coast of North America. Mar Ecol Prog Ser 235:289–297CrossRefGoogle Scholar
  59. Yanai Z, Dayan T, Mienis HK, Gasith A (2017) The pet and horticultural trades as introduction and dispersal agents of non-indigenous freshwater molluscs. Manag Biol Invasion 8:523–532CrossRefGoogle Scholar

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© The Author(s) 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  1. 1.Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural ResourcesCzech University of Life Sciences PraguePrague - SuchdolCzech Republic
  2. 2.Programa de Pós-Graduação em Tecnologias para o Desenvolvimento SustentávelUniversidade Federal de São João Del ReiOuro BrancoBrazil
  3. 3.South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Faculty of Fisheries and Protection of WatersUniversity of South Bohemia in České BudějoviceVodňanyCzech Republic
  4. 4.Department of BiologyUniversity of Texas Rio Grande ValleyEdinburgUSA
  5. 5.Department of Aquatic Resources Management, Faculty of Fisheries and Marine SciencesBogor Agricultural UniversityBogorIndonesia
  6. 6.Laboratório de Ecologia e Conservação, Departamento de Engenharia AmbientalUniversidade Federal do ParanáCuritibaBrazil

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