| Issue |
Knowl. Manag. Aquat. Ecosyst.
Number 422, 2021
|
|
|---|---|---|
| Article Number | 25 | |
| Number of page(s) | 4 | |
| DOI | https://doi.org/10.1051/kmae/2021023 | |
| Published online | 28 June 2021 | |
Short Communication
Another hitchhiker exposed: Diceratocephala boschmai (Platyhelminthes: Temnocephalida) found associated with ornamental crayfish Cherax spp.
Un autre hitchhiker dévoilé: Diceratocephala boschmai (Platyhelminthes: Temnocephalida) trouvé associé aux écrevisses ornementales Cherax spp
1
South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Faculty of Fisheries and Protection of Waters, University of South Bohemia in České Budějovice, Zátiší 728/II, Vodňany 389 25, Czech Republic
2
Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, Prague − Suchdol 165 00, Czech Republic
* Corresponding author: lozekf@jcu.cz
Received:
6
May
2021
Accepted:
21
May
2021
There are known plenty tiny invertebrate species associated with decapod crustaceans. Our contribution documents the first record of New Guinean ornamental Cherax crayfish epibiont, Diceratocephala boschmai (Platyhelminthes: Temnocephalida) found in pet trade in the Czech Republic. Correct species assignment was confirmed by genetic barcoding. The pathway for introductions of organisms unintentionally moved in association with ornamental crayfish via the international trade has been highlighted. Although Cherax species survive in thermal waters in Europe, even potential introduction to these habitats posed threat to native crayfish ectosymbionts (branchiobdellids) thought similar ecological niche.
Résumé
On connaît de nombreuses espèces de petits invertébrés associés à des crustacés décapodes. Notre contribution documente le premier enregistrement de l'épibionte de l'écrevisse Cherax ornementale de Nouvelle-Guinée, Diceratocephala boschmai (Platyhelminthes: Temnocephalida) trouvé dans le commerce des animaux de compagnie en République tchèque. L'attribution correcte des espèces a été confirmée par un code-barres génétique. La voie d'introduction d'organismes déplacés involontairement en association avec des écrevisses ornementales via le commerce international a été mise en évidence. Alors que les espèces de Cherax survivent dans les eaux thermales en Europe, même une introduction potentielle dans ces habitats constitue une menace pour les ectosymbiontes d'écrevisses indigènes (branchiobdellidés) dont la niche écologique est similaire.
Key words: Ectosymbiont / alien species / ornamental species / pet trade / Europe / New Guinea
Mots clés : Ectosymbionte / espèces exotiques / espèces ornementales / commerce des animaux de compagnie / Europe / Nouvelle-Guinée
© F. Ložek et al., Published by EDP Sciences 2021
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