Risk assessment of pet-traded decapod crustaceans in Hungary with evidence of Cherax quadricarinatus ( von Martens , 1868 ) in the wild (original) (raw)
Related papers
Knowledge & Management of Aquatic Ecosystems
The pet trade with decapod crustaceans has been considered one of the main pathway of introduction of these animals worldwide. As the leading markets in this regards are the Czech Republic, Germany and the USA. Central Asia is not perceived as an important market with ornamental decapod crustaceans. Despite this assumption, we found at least 16 species of freshwater shrimp, crayfish and crab species pet-traded in the Republic of Kazakhstan, the largest country in this region. Considering computed risk assessment, the origin of particular species, their availability on the market, the probability of establishment and further aspects, we identified two crayfish Procambarus clarkii and Procambarus fallax f. virginalis being the seriously hazardous taxa with high potential to threaten native crayfish species as well as inhabited ecosystems. To prevent their introductions and to minimize the risks of mentioned species, similarly as in the case of European Union, we recommend the total ban of import, trade and keeping of these high-risk taxa within Central Asia. Keywords: biological invasion / climate matching / introduction pathway / Procambarus clarkii / Procambarus fallax f. virginalis Résumé-Évaluation des risques du commerce des crustacés décapodes pour l'aquariophilie en République du Kazakhstan, premier pays d'Asie centrale. Le commerce des animaux de compagnie avec des crustacés décapodes a été considéré comme l'un des principaux moyens d'introduction de ces animaux dans le monde entier. Comme les principaux marchés à cet égard sont la République tchèque, l'Allemagne et les États-Unis, l'Asie centrale n'est pas perçue comme un marché important des crustacés décapodes ornementaux. Malgré cette hypothèse, nous avons trouvé au moins 16 espèces de crevettes, d'écrevisses et de crabes d'eau douce commercialisées dans la République du Kazakhstan, le plus grand pays de cette région. Compte tenu de l'évaluation des risques calculés, de l'origine d'espèces particulières, de leur disponibilité sur le marché, de la probabilité d'établissement et d'autres aspects, nous avons identifié deux écrevisses Procambarus clarkii et Procambarus fallax f. virginalis étant les taxons gravement dangereux avec un risque élevé de menacer les espèces d'écrevisses natives ainsi que les écosystèmes habités. Pour éviter leur introduction et minimiser les risques des espèces mentionnées, de même que dans le cas de l'Union européenne, nous recommandons l'interdiction totale d'importer, de commercialiser et de conserver ces taxons à haut risque en Asie centrale. Mots-clés : invasion biologique / adaptation climatique / voie d'introduction / Procambarus clarkii / Procambarus fallax f. virginalis
Hungary: a European hotspot of non-native crayfish biodiversity
Knowledge & Management of Aquatic Ecosystems
There is a long history of crayfish introductions in Europe and numbers keep increasing. In Hungary, spiny-cheek crayfish Faxonius limosus, signal crayfish Pacifastacus leniusculus, red swamp crayfish Procambarus clarkii, marbled crayfish P. virginalis and Mexican dwarf crayfish Cambarellus patzcuarensis have become established. Here we report on monitoring at two localities with novel crayfish assemblages closely linked to releases associated with the pet trade. Florida crayfish Procambarus alleni were recorded from the Gombás brook near Vác living in syntopy with the established spiny-cheek crayfish. Dozens of Florida crayfish individuals including egg-carrying females have been detected. The short lifespan of this species and its documented presence including two overwintering in at least two years suggests possible establishment. However, the lack of juvenile records calls for further monitoring as long-term propagule pressure cannot be ruled out. We also identified a single mar...
Risk assessment of the crayfish pet trade based on data from the Czech Republic
Biological Invasions, 16, 2489-2494. DOI 10.1007/s10530-014-0682-5, 2014
The pet trade in freshwater crustaceans, including crayfish, has grown rapidly in recent decades and become an important pathway for introducing new non-indigenous species into Europe. This paper provides the first overview of non-indigenous crayfish species (NICS) traded as ornamental and their potential impact in the Czech Republic, which is the second leading importer into Europe. The paper presents a full list of traded crayfish species, their market availability, and trade names or misnomers used in the country. In total, 27 crayfish species from all three families are advertised and marketed, of which Astacus astacus is the only indigenous species. Only three NICS were recognized as very common on the market. The invasiveness and risk associated with ornamental crayfish trade were assessed using the Freshwater Invertebrate Invasiveness Scoring Kit. Five NICS were classified into the high-risk category, the highest score being for Procambarus fallax f. virginalis. The invasiveness of crayfish indigenous to North America is significantly greater than that of crayfish from the rest of the world, and therefore regulation in this regard is recommended.
Native and alien Decapoda in Hungary: distribution, status, conservation importance.
Bulletin Français de la peche et de la pisciculture, 376-377, 2005, 837, 845, 2005
Three native (Astacus astacus, Astacus leptodactylus, Austropotamobius torrentium) and three alien (Orconectes limosus, Pacifastacus leniusculus, Eriocheir sinensis) Decapoda species have been found in Hungary so far. A. astacus is the most widespread Decapoda species in Hungary. A. leptodactylus might be considered as the least studied. The distribution of A. torrentium in Hungary is restricted to mountain streams with occasional data on its presence in the adjacent section of the River Danube. The indigenous species A. torrentium and, especially A. astacus, are declining while A. leptodactylus seems to have stable populations. The detection of alien species accelerated at the turn of the century: O. limosus was found at new sites, P. leniusculus was first recorded in the Gyöngyösstream near the Austrian border in 2000, E. sinensis in the main arm of the Danube at Budapest in November 2003. As there is a lack of information even on the commonest species, conservation-oriented mapping is necessary to follow the distribution changes of Decapoda in Hungary.
East European crayfish stocks at risk: arrival of non-indigenous crayfish species
Knowledge & Management of Aquatic Ecosystems
An increasing number of non-indigenous crayfish species (NICS) of apparently pet trade origin have become established particularly in Europe. Especially alarming are recent confirmation of two distantly separated marbled crayfish Procambarus fallax f. virginalis populations in Ukraine and indications of more North American cambarids present in the local pet market. The present study aimed to investigate crayfish species availability within the Ukrainian pet trade together with the climate match and risk they represent to the freshwater ecosystems generally and indigenous crayfish species in particular. Altogether, 15 NICS belonging to all three crayfish families were detected. Considering their origin, availability, probability of establishment, invasiveness and further aspects, marbled crayfish and red swamp crayfish Procambarus clarkii appear to be potentially the most troubling. Available information obtained from the pet trade in ornamental crayfish as a whole demonstrates that the broad availability of NICS most probably overlaps the vast majority of European indigenous crayfish species distribution, including the endemic thick-clawed crayfish Astacus pachypus, which occupies only a limited area that is situated critically close to established marbled crayfish populations. Negative effects of NICS on freshwater ecosystems as a whole can be also expected. Keywords: Ukraine / pet trade / ornamental animal / invasiveness / aquarium Résumé-Les stocks d'écrevisses d'Europe orientale en danger : l'arrivée d'espèces d'écrevisses
Knowledge & Management of Aquatic Ecosystems
The international pet trade has caused numerous introductions of non-native species globally. This is also true for freshwater decapod crustaceans including the red cherry shrimp. This tiny creature has been previously found in thermally polluted waters in Europe (Germany and Poland). Here, we present its first occurrence in Hungary and in the entire Carpathian Basin. The species was sampled once per month over 1 yr, from November 2017 to November 2018 in a natural thermal pond (spa) and also in an adjoining non-thermal brook in Miskolctapolca, Hungary. Shrimps were preyed upon by adult fishes in the locality but many individuals, including ovigerous females and juveniles, were recorded within the survey continuously. The density of shrimps was positively correlated with the water temperature, despite some individuals being found in the non-thermal stream and also in winter. We consider that the population of this species in Hungary is now well-established and self-sustaining.
Native and Alien Decapoda Species in Hungary:Distribution, Status, Conservation Importance
Bulletin Français de la Pêche et de la Pisciculture, 2005
Three native (Astacus astacus, Astacus leptodactylus, Austropotamobius torrentium) and three alien (Orconectes limosus, Pacifastacus leniusculus, Eriocheir sinensis) Decapoda species have been found in Hungary so far. A. astacus is the most widespread Decapoda species in Hungary. A. leptodactylus might be considered as the least studied. The distribution of A. torrentium in Hungary is restricted to mountain streams with occasional data on its presence in the adjacent section of the River Danube. The indigenous species A. torrentium and, especially A. astacus, are declining while A. leptodactylus seems to have stable populations. The detection of alien species accelerated at the turn of the century: O. limosus was found at new sites, P. leniusculus was first recorded in the Gyöngyösstream near the Austrian border in 2000, E. sinensis in the main arm of the Danube at Budapest in November 2003. As there is a lack of information even on the commonest species, conservation-oriented mapping is necessary to follow the distribution changes of Decapoda in Hungary.
Alien Crustacea in Polish waters (Part I) Introduction and Decapoda
Oceanological and Hydrobiological Studies
The paper presents the biogeography, history, and some ecological consequences of the introduction of alien decapod species in Poland, with extensive reference to other European countries. Among some 585 species of Crustacea recorded in Polish waters, 18 representatives of five orders of macrocrustaceans are identified as alien species that either invaded or were introduced to Polish waters in historical times. Of this number, seven species are Decapoda: Pontastacus leptodactylus, Pacifastacus leniusculus, Orconectes limosus, Atyaephyra desmaresti, Palaemon elegans, Rhithropanopeus harrisii, Eriocheir sinensis.
Aacl Bioflux, 2013
The crayfish (Decapoda) fauna of the Mures/Maros, Crisul Repede/Sebes-Körös, Crisul Negru/Fekete-Körös and Crisul Alb/Fehér-Körös rivers was surveyed in 16 sampling areas in 2012. The crayfish assemblages of the sampling areas were sampled using LiNi traps, hand collection and electric fishing. A total of 56 individuals of 3 crayfish species, two indigenous (Astacus astacus, Astacus leptodactylus) and one exotic (Orconectes limosus), were registered in the four rivers. The individuals of the spiny-cheek crayfish were caught in the Körösladány section of the Sebes-Körös river, making this site the easternmost border of the current Hungarian range of the species. The extremely rapid colonization in the Tisza watershed questions the hypothesis that the species has spread to the Tisza from the Danube. It was probably introduced into the eastern part of the country accidentally during fish stocking events or intentionally, as a live bait.