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Invasive Alien Species of Invertebrates and Fishes Introduced Into Mexican Freshwater Habitats

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Mexican Fauna in the Anthropocene

Abstract

Freshwater habitats are among one of the most threatened ecosystems of the planet. Factors such as anthropogenic land-use change, climate change, and biodiversity loss are some of the most critical ones and are interconnected. The mixture of those drivers together with other anthropogenic influences such as transportation and voluntary introduction of alien species can set off the condition for such organisms to become invasive. In this chapter, we deal with the multiple groups of freshwater organisms that have been reported as invasive alien species in Mexican freshwater habitats.

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References

  • Arriaga-Cabrera L, Aguilar-Sierra V, Alcocer-Durand J (2000) Aguas continentales y diversidad biológica de México. CONABIO, México

    Book  Google Scholar 

  • Armendáriz G, Quiroz-Martínez B, Alvarez F (2017) Risk assessment for the Mexican freshwater crayfish: The roles of diversity, endemism and conservation status. Aquat Conserv Mar Freshwat Ecosyst 27(1):78–89. https://doi.org/10.1002/aqc.2671

  • Artois T (2008) Global diversity of free living flatworms (Platyhelminthes, “Turbellaria”) in freshwater. Hydrobiologia 595:41–48

    Google Scholar 

  • Barker GM (2004) Natural enemies of terrestrial Molluscs. CABI

    Book  Google Scholar 

  • Boag B, Yeates GW (2001) The potential impact of the New Zealand flatworm, a predator of earthworms, in Western Europe. Ecol Appl 11(5):1276–1286

    Article  Google Scholar 

  • Bortolini JL, Alvarez F, Rodríguez-Almaraz G (2007) On the presence of the Australian redclaw crayfish, Cherax quadricarinatus, in Mexico. Biol Invasions 9(5):615–620

    Article  Google Scholar 

  • Bousset L, Pointier J-P, David P et al (2014) Neither variation loss, nor change in selfing rate is associated with the worldwide invasion of Physa acuta from its native North America. Biol Invasions 16(8):1769–1783

    Article  Google Scholar 

  • Bowater RO, Wingfield M, Fisk A et al (2002) A parvo-like virus in cultured redclaw crayfish Cherax quadricarinatus from Queensland, Australia. Dis Aquat Org 50(2):79–86

    Article  Google Scholar 

  • Bruno P, Machado RAR, Glauser G et al (2020) Entomopathogenic nematodes from Mexico that can overcome the resistance mechanisms of the western corn rootworm. Sci Rep 10(1):8257

    Article  CAS  Google Scholar 

  • Brusa F, Leal-Zanchet AM, Noreña C (2020) Phylum Platyhelminthes. In: Rogers DC, Damborenea C, Thorp J (eds) Thorp and Covich’s freshwater invertebrates, 4th edn. Academic Press, pp 101–120

    Chapter  Google Scholar 

  • Campos E, Ruiz-Campos G, Delgadillo J (2013) Primer registro del caracol manzano exótico Pomacea canaliculata (Gastropoda: Ampullariidae) en México, con comentarios sobre su propagación en el bajo río Colorado. Rev Mex Biodivers 84(2):671–675

    Article  Google Scholar 

  • Canul-Ku HL, Rodríguez-Vivas RI, Torres-Acosta JFJ et al (2012) Prevalence of cattle herds with ivermectin resistant nematodes in the hot sub-humid tropics of Mexico. Vet Parasitol 183(3):292–298

    Article  CAS  Google Scholar 

  • CBD (2000) CBD. “Cartagena Protocol on Biosafety to the Convention on Biological Diversity: Text and Annexes.” Montreal: Secretariat of the Convention on Biological Diversity

    Google Scholar 

  • Chucholl C (2013) Invaders for sale: Trade and determinants of introduction of ornamental freshwater crayfish. Biol Invasions, 15(1): 125–141. https://doi.org/10.1007/s10530-012-0273-2

  • Collins JJ (2017) Platyhelminthes. Curr Biol 27(7):R252–R256

    Article  CAS  Google Scholar 

  • CONABIO (2020) Especies exóticas invasoras. In: Búsqueda Especies Exóticas Invasoras. https://enciclovida.mx/exoticas-invasoras. Accessed 23 Dec 2020

    Google Scholar 

  • Cooper CJ, Mueller CA, Eme J (2019) Temperature tolerance and oxygen consumption of two South American tetras, Paracheirodon innesi and Hyphessobrycon herbertaxelrodi. J Therm Biol 86:102434

    Article  Google Scholar 

  • Crandall KA, Buhay JE (2008) Global diversity of crayfish (Astacidae, Cambaridae, and Parastacidae—Decapoda) in freshwater. In E. V. Balian, C. Lévêque, H. Segers, & K. Martens (Eds.), Freshwater Animal Diversity Assessment (pp. 295–301). Springer Netherlands. https://doi.org/10.1007/978-1-4020-8259-7_32

  • Cumberlidge N, Ng PKL, Yeo DCJ et al (2009) Freshwater crabs and the biodiversity crisis: importance, threats, status, and conservation challenges. Biol Conserv 142(8):1665–1673

    Article  Google Scholar 

  • Depew DC, Krutzelmann E, Watchorn KE et al (2020) The distribution, density, and biomass of the zebra mussel (Dreissena polymorpha) on natural substrates in Lake Winnipeg 2017-2019. J Gt Lakes Res 47:556–566

    Article  Google Scholar 

  • du Preez L, Smit N (2013) Double blow: Alien crayfish infected with invasive temnocephalan in South African waters. South Afr J Sci 109(9–10):1–4

    Google Scholar 

  • Early R, Bradley BA, Dukes JS et al (2016) Global threats from invasive alien species in the twenty-first century and national response capacities. Nat Commun 7(1):12485

    Article  CAS  Google Scholar 

  • Edgerton B, Paasonen P, Henttonen P et al (1996) Description of a bacilliform virus from the freshwater crayfish, Astacus astacus. J Invertebr Pathol 68(2):187–190

    Article  Google Scholar 

  • Edgerton BF, Owens L (1999) Histopathological surveys of the redclaw freshwater crayfish, Cherax quadricarinatus, in Australia. Aquaculture, 180(1):23–40. https://doi.org/10.1016/S0044-8486(99)00195-7

  • Edgerton BF, Webb R, Anderson IG et al (2000) Description of a presumptive hepatopancreatic reovirus, and a putative gill parvovirus, in the freshwater crayfish Cherax quadricarinatus. Dis Aquat Org 41(2):83–90

    Article  CAS  Google Scholar 

  • Espinosa-Pérez H, Ramírez M (2015) Exotic and invasive fishes in Mexico. Check List 11(3):1–13

    Article  Google Scholar 

  • Fagúndez J, Lema M (2019) A competition experiment of an invasive alien grass and two native species: are functionally similar species better competitors? Biol Invasions 21(12):3619–3631

    Article  Google Scholar 

  • García-Vásquez A, Razo-Mendivil U, Rubio-Godoy M (2017) Triple trouble? Invasive poeciliid fishes carry the introduced tilapia pathogen Gyrodactylus cichlidarum in the Mexican highlands. Vet Parasitol 235:37–40

    Article  Google Scholar 

  • Grano-Maldonado MI, Rodríguez-Santiago MA, García-Vargas F et al (2018) An emerging infection caused by Gyrodactylus cichlidarum Paperna, 1968 (Monogenea: Gyrodactylidae) associated with massive mortality on farmed tilapia Oreochromis niloticus (L.) on the Mexican Pacific coast. Lat Am J Aquat Res 46(5):961–968

    Article  Google Scholar 

  • Hänfling B, Edwards F, Gherardi F (2011) Invasive alien Crustacea: dispersal, establishment, impact and control. BioControl 56(4):573–595

    Article  Google Scholar 

  • Haubrock PJ, Balzani P, Azzini M et al (2019) Shared histories of co-evolution may affect trophic interactions in a freshwater community dominated by alien species. Front Ecol Evol 7:355

    Article  Google Scholar 

  • Hayes KA, Joshi RC, Thiengo SC et al (2008) Out of South America: multiple origins of non-native apple snails in Asia. Divers Distrib 14(4):701–712

    Article  Google Scholar 

  • Hernández L, Maeda-Martínez AM, Ruiz-Campos G et al (2008) Geographic expansion of the invasive red crayfish Procambarus clarkii (Girard, 1852) (Crustacea: Decapoda) in Mexico. Biol Invasions 10(7):977–984

    Article  Google Scholar 

  • Hugot J-P, Baujard P, Morand S (2001) Biodiversity in helminths and nematodes as a field of study: an overview. Nematology 3(3):199–208

    Article  Google Scholar 

  • Ilarri MI, Souza AT, Antunes C et al (2014) Influence of the invasive Asian clam Corbicula fluminea (Bivalvia: Corbiculidae) on estuarine epibenthic assemblages. Estuar Coast Shelf Sci 143:12–19

    Article  Google Scholar 

  • Ingham RE (1994) Nematodes. In: Methods of soil analysis. Wiley, pp 459–490

    Google Scholar 

  • Justine J-L, Winsor L, Gey D et al (2014) The invasive New Guinea flatworm Platydemus manokwari in France, the first record for Europe: time for action is now. PeerJ 2:e297

    Article  Google Scholar 

  • Kar D (2016) Chapter 1 - Introduction. In: Kar D (ed) Epizootic ulcerative fish disease syndrome. Academic Press, pp 1–19

    Google Scholar 

  • Kent ML, Bishop-Stewart JK, Matthews JL et al (2002) Pseudocapillaria tomentosa, a nematode pathogen, and associated neoplasms of Zebrafish (Danio rerio) kept in research colonies. Comp Med 52(4):354–358

    CAS  Google Scholar 

  • Kikillus KH, Hare KM, Hartley S (2012) Online trading tools as a method of estimating propagule pressure via the pet-release pathway. Biol Invasions, 14(12):2657–2664. https://doi.org/10.1007/s10530-012-0262-5

  • Lai S, Leone F, Zoppi C (2017) Anthropization processes and protection of the environment: an assessment of land cover changes in Sardinia, Italy. Sustainability 9(12):2174

    Article  Google Scholar 

  • Lévêque C, Oberdorff T, Paugy D et al (2008) Global diversity of fish (Pisces) in freshwater. In: Balian EV, Lévêque C, Segers H, Martens K (eds) Freshwater animal diversity assessment. Springer, Dordrecht, pp 545–567

    Chapter  Google Scholar 

  • Levsen A (2001) Transmission ecology and larval behaviour of Camallanus cotti (Nematoda, Camallanidae) under aquarium conditions. Aquar Sci Conserv 3(4):301–311

    Article  Google Scholar 

  • Low CF, Yussof MRM, Kuppusamy G et al (2018) Molecular biology of Macrobrachium rosenbergii nodavirus infection in giant freshwater prawn. J Fish Dis 41:1771–1781

    Article  CAS  Google Scholar 

  • Lowe MR, Wu W, Peterson MS et al (2012) Survival, growth and reproduction of non-native Nile Tilapia II: fundamental niche projections and invasion potential in the northern Gulf of Mexico. PLoS One 7(7):e41580

    Article  CAS  Google Scholar 

  • Lundberg J, Kottelat M, Smith GR et al (2000) So many fishes, so little time: an overview of recent ichthyological discovery in continental waters. Ann Missouri Bot Gard 87:26–62

    Article  Google Scholar 

  • Martín PR, Estebenet AL, Cazzaniga NJ (2001) Factors affecting the distribution of Pomacea canaliculata (Gastropoda: Ampullariidae) along its southernmost natural limit. Malacologia 43(1/2):13–23

    Google Scholar 

  • MEA (2005) Millennium ecosystem assessment. New Island, Washington DC

    Google Scholar 

  • Mendoza R, Luna S, Aguilera C (2015) Risk assessment of the ornamental fish trade in Mexico: analysis of freshwater species and effectiveness of the FISK (Fish Invasiveness Screening Kit). Biol Invasions 17(12):3491–3502

    Article  Google Scholar 

  • Mills LS, Soulé ME, Doak DF (1993) The keystone-species concept in ecology and conservation. Bioscience 43(4):219–224

    Article  Google Scholar 

  • Molina-Ochoa J, Lezama-Gutierrez R, Gonzalez-Ramirez M et al (2003) Pathogens and parasitic nematodes associated with populations of fall armyworm (Lepidoptera: Noctuidae) larvae in Mexico. Fla Entomol 86(3):244–253

    Article  Google Scholar 

  • Mooney HA, Mack R, McNeely JA et al (2005) Invasive alien species: a new synthesis. Island Press

    Google Scholar 

  • Moravec F, Vivas-Rodríguez C, Scholz T et al (1995) Nematodes parasitic in fishes of cenotes (= sinkholes) of the Peninsula of Yucatan, Mexico. Part 2. Larvae. Folia Parasitol (Praha) 42(3):199–210

    CAS  Google Scholar 

  • Nalepa TF, Schloesser DW (1992) Zebra mussels biology, impacts, and control. CRC Press

    Google Scholar 

  • Naranjo-García E, Castillo-Rodríguez ZG (2017) First inventory of the introduced and invasive mollusks in Mexico. The Nautilus 131(2):20

    Google Scholar 

  • Noreña C, Damborenea C, Brusa F (2015) Chapter 10 - Phylum Platyhelminthes. In: Thorp JH, Rogers DC (eds) Thorp and Covich’s freshwater invertebrates, 4th edn. Academic Press, Boston, pp 181–203

    Chapter  Google Scholar 

  • Ochoa-Ochoa LM, Flores-Villela OA, Ríos-Muñoz CA et al (2017) Mexico’s ambiguous invasive species plan. Science 355(6329):1033

    Article  CAS  Google Scholar 

  • Parker GA, Chubb JC, Ball MA et al (2003) Evolution of complex life cycles in helminth parasites. Nature 425(6957):480–484

    Article  CAS  Google Scholar 

  • Ponce-Palafox JT, Esparza-Leal H, Cabanillas-Beltrán H et al (2003) Desarrollo de los sistemas de producción de postlarvas de camarón de agua dulce (Macrobrachium rosenbergii) en la región sur de México. Congreso Internacional Virtual de Acuacultura, pp 587–597

    Google Scholar 

  • Pineda-López R, Salgado-Maldonado G, Soto-Galera E et al (2005) Helminth parasites of viviparous fishes in Mexico. In: Grier HJ, Uribe MC (eds) Viviparous fishes. New Life Publication, Homestead, p 603

    Google Scholar 

  • Pluess T, Jarošík V, Pyšek P et al (2012) Which factors affect the success or failure of eradication campaigns against alien species? PLoS One 7(10):e48157

    Article  CAS  Google Scholar 

  • Qiu J-W, Kwong K-L (2009) Effects of macrophytes on feeding and life-history traits of the invasive apple snail Pomacea canaliculata. Freshw Biol 54(8):1720–1730

    Article  Google Scholar 

  • Ramírez-Albores JE, Badano EI, Flores J et al (2019) Scientific literature on invasive alien species in a megadiverse country: advances and challenges in Mexico. NeoBiota 48:113–127

    Article  Google Scholar 

  • Rhyne, A. L., Tlusty, M. F., Schofield, P. J., Kaufman, L., Jr, J. A. M., & Bruckner, A. W. (2012). Revealing the Appetite of the Marine Aquarium Fish Trade: The Volume and Biodiversity of Fish Imported into the United States. PLOS ONE, 7(5):e35808. https://doi.org/10.1371/journal.pone.0035808

  • Rodríguez-Rey M, Consuegra S, Börger L et al (2021) Boat ramps facilitate the dispersal of the highly invasive zebra mussel (Dreissena polymorpha). Biol Invasions 23(5):1487–1496

    Article  Google Scholar 

  • Romero X, Jiménez R (2002) Histopathological survey of diseases and pathogens present in redclaw crayfish, Cherax quadricarinatus (Von Martens), cultured in Ecuador. J Fish Dis 25(11):653–667

    Article  Google Scholar 

  • Roy HE, Lawson Handley L-J, Schönrogge K et al (2011) Can the enemy release hypothesis explain the success of invasive alien predators and parasitoids? BioControl 56(4):451–468

    Article  Google Scholar 

  • Salgado-Maldonado G, Pineda-López RF (2003) The Asian fish tapeworm Bothriocephalus acheilognathi: a potential threat to native freshwater fish species in Mexico. Biol Invasions 5(3):261–268

    Article  Google Scholar 

  • Salgado-Maldonado G, Quiroz-Martínez B (2013) Taxonomic composition and endemism of the helminth fauna of freshwater fishes of Mexico. Parasitol Res 112(1):1–18

    Article  Google Scholar 

  • Schloesser DW, Schmuckal C (2012) Bibliography of Dreissena polymorpha (Zebra Mussels) and Dreissena rostriformis Bugensis (QUAGGA Mussels): 1989 to 2011. J Shellfish Res 31(4):1205–1263

    Article  Google Scholar 

  • Seebens H, Blackburn TM, Dyer EE et al (2017) No saturation in the accumulation of alien species worldwide. Nat Commun 8(1):14435

    Article  CAS  Google Scholar 

  • Sluys R (2016) Invasion of the flatworms. Am Sci 104(5):288

    Article  Google Scholar 

  • Soes DM, Koese B (2010) Invasive crayfish in the Netherlands: A preliminary risk analysis. https://repository.naturalis.nl/pub/363003

  • Sousa R, Gutiérrez JL, Aldridge DC (2009) Non-indigenous invasive bivalves as ecosystem engineers. Biol Invasions 11(10):2367–2385. https://doi.org/10.1007/s10530-009-9422-7

  • Stachowicz J, Tilman D (2005) Species Invasions and the Relationships between Species Diversity, Community Saturation, and Ecosystem Functioning 2. Species Invasions: Insights into Ecology, Evolution, and Biogeography.

    Google Scholar 

  • Stocchino GA, Sluys R, Harrath AH et al (2019) The invasive alien freshwater flatworm Girardia tigrina (Girard, 1850) (Platyhelminthes, Tricladida) in Western Europe: new insights into its morphology, karyology and reproductive biology. Contrib Zool 88(2):236–256

    Google Scholar 

  • Stoskopf MK (2015) Chapter 21 - Biology and Management of Laboratory Fishes. In: Fox JG, Anderson LC, Otto GM, Pritchett-Corning KR, Whary MT (eds) Laboratory animal medicine, 3rd edn. Academic Press, Boston, pp 1063–1086

    Chapter  Google Scholar 

  • Strayer DL (2006) Challenges for freshwater invertebrate conservation. J North Am Benthol Soc 25(2):271–287

    Article  Google Scholar 

  • Strayer DL (2009) Twenty years of zebra mussels: lessons from the mollusk that made headlines. Front Ecol Environ 7(3):135–141

    Article  Google Scholar 

  • Stumpp M (1975) Untersuchungen zur morphologie und biologie von Camallanus cotti (Fujita, 1927). Z Für Parasitenkd 46(4):277–290

    Article  Google Scholar 

  • Suárez-Morales E, Arroyo-Bustos G (2012) An intra-continental invasion of the temperate freshwater copepod Skistodiaptomus pallidus (Herrick, 1879) (Calanoida, Diaptomidae) in tropical Mexico. BioInvasions Rec 1(4):255–262

    Article  Google Scholar 

  • Thompson FG, Hulbert RC (2011) An annotated checklist and bibliography of the land and freshwater snails of Mexico and Central America. Bull Fla Mus Natl Hist 50(1):1–299

    Google Scholar 

  • Torres-Acosta JFJ, Dzul-Canche U, Aguilar-Caballero AJ et al (2003) Prevalence of benzimidazole resistant nematodes in sheep flocks in Yucatan, Mexico. Vet Parasitol 114(1):33–42

    Article  CAS  Google Scholar 

  • Tranchida MC, Maciá A, Brusa F et al (2009) Predation potential of three flatworm species (Platyhelminthes: Turbellaria) on mosquitoes (Diptera: Culicidae). Biol Control 49(3):270–276

    Article  Google Scholar 

  • Valero A, Macías-Garcia C, Magurran AE (2008) Heterospecific harassment of native endangered fishes by invasive guppies in Mexico. Biol Lett 4(2):149–152

    Article  Google Scholar 

  • Vega-Villasante F, Ávalos-Aguilar JJ, Nolasco-Soria H et al (2015) Wild populations of the invasive Australian red claw crayfish Cherax quadricarinatus (Crustacea, Decapoda) near the northern coast of Jalisco, Mexico: a new fishing and profitable resource. Lat Am J Aquat Res 43(4):781–785

    Article  Google Scholar 

  • Weber S, Traunspurger W (2017) Invasive red swamp crayfish (Procambarus clarkii) and native noble crayfish (Astacus astacus) similarly reduce oligochaetes, epipelic algae, and meiofauna biomass: a microcosm study. Freshw Sci 36(1):103–112

    Article  Google Scholar 

  • Yusa Y, Sugiura N, Wada T (2006) Predatory potential of freshwater animals on an invasive agricultural pest, the Apple Snail Pomacea canaliculata (Gastropoda: Ampullariidae), in southern Japan. Biol Invasions 8(2):137–147

    Article  Google Scholar 

  • Zarowiecki M, Berriman M (2015) What helminth genomes have taught us about parasite evolution. Parasitology 142(S1):S85–S97

    Article  CAS  Google Scholar 

Download references

Acknowledgments

The doctoral studies at the Helmholtz Centre for Environmental Research – UFZ of Hugo Enrique Reyes Aldana are currently founded by the Helmholtz International Research School TRACER (Trajectories Towards Water Security), grant no. HIRS-0017.

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Authors and Affiliations

  1. Departamento de Biología Comparada, Facultad de Ciencias, Universidad Nacional Autonoma de México, Ciudad de México, Mexico

    José Luis Bortolini-Rosales

  2. Department of River Ecology, Helmholtz Centre for Environmental Research – UFZ, Magdeburg, Germany

    Hugo Enrique Reyes-Aldana

  3. Department of Aquatic Ecosystem Analysis, Helmholtz Centre for Environmental Research – UFZ, Magdeburg, Germany

    Hugo Enrique Reyes-Aldana

Authors
  1. José Luis Bortolini-Rosales
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  2. Hugo Enrique Reyes-Aldana
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Correspondence to José Luis Bortolini-Rosales .

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Editors and Affiliations

  1. Facultad de Ciencias Naturales, Universidad Nacional Autónoma de Querétaro, Juriquilla, Mexico

    Robert W. Jones

  2. Colección Nacional de Peces, Instituto de Biologia, Universidad Nacional Autónoma de México, Ciudad Universitaria, Ciudad de México, Mexico

    C. Patricia Ornelas-García

  3. Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, Juriquilla, Querétaro, Mexico

    Rubén Pineda-López

  4. Colección Nacional de Peces, Instituto de Biologia, Universidad Nacional Autónoma de México, Ciudad Universitaria, Ciudad de México, Mexico

    Fernando Álvarez

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Bortolini-Rosales, J.L., Reyes-Aldana, H.E. (2023). Invasive Alien Species of Invertebrates and Fishes Introduced Into Mexican Freshwater Habitats. In: Jones, R.W., Ornelas-García, C.P., Pineda-López, R., Álvarez, F. (eds) Mexican Fauna in the Anthropocene. Springer, Cham. https://doi.org/10.1007/978-3-031-17277-9_21

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