title: Potential pest transfer mediated by international ornamental plant trade.
abstract: In recent years, the keeping of ornamental freshwater animals and plants in garden ponds has been growing in popularity. Water hyacinth (Eichhornia crassipes) is one of the preferred macrophytes seasonally imported mainly from South-eastern Asia throughout the world. This constitutes a secondary introduction inasmuch as the species is native to South America. Although many assemblages of aquatic invertebrates have been described as associated with this plant in the wild, there has been no research focused on their potential introduction via the international plant trade. We examined 216 specimens of water hyacinths imported for ornamental purposes from Indonesia into the Czech Republic. Numerous meio- and macroinvertebrates belonging to at least 39 species were captured. On the total number of individuals, the highest prevalence was of Tubulinea and Rotifera. Most of these were still alive and vital, including a caterpillar of the Indo-Australian invasive moth Spodoptera litura. Water hyacinths are usually placed into outdoor ponds immediately after import, which facilitates the release of non-target alien species. The present paper aims to draw attention to "hitchhikers" associated with the ornamental trade.
authors.affiliation: Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic.
authors.forename: Jiří
authors.initials: J
authors.lastname: Patoka
authors.affiliation: Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses and Research Institute of Fish Culture and Hydrobiology, University of South Bohemia in České Budějovice, Vodňany, Czech Republic.
authors.forename: Martin
authors.initials: M
authors.lastname: Bláha
authors.affiliation: Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic.
authors.forename: Lukáš
authors.initials: L
authors.lastname: Kalous
authors.affiliation: Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic.
authors.forename: Vladimír
authors.initials: V
authors.lastname: Vrabec
authors.affiliation: Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses and Research Institute of Fish Culture and Hydrobiology, University of South Bohemia in České Budějovice, Vodňany, Czech Republic.
authors.forename: Miloš
authors.initials: M
authors.lastname: Buřič
authors.affiliation: Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses and Research Institute of Fish Culture and Hydrobiology, University of South Bohemia in České Budějovice, Vodňany, Czech Republic.
authors.forename: Antonín
authors.initials: A
authors.lastname: Kouba
mesh_terms: D000818:Animals; D059001:Aquatic Organisms; D003132:Commerce; D018153:Czech Republic; D031806:Eichhornia / Q000502:physiology*; D007214:Indonesia; D058865:Introduced Species; D007448:Invertebrates / Q000502:physiology*; D061005:Ponds / Q000032:analysis; D013020:South America