Crayfish invasions at a long-term ecological research site formerly occupied by the noble crayfish Astacus astacus

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F24%3A43908408" target="_blank" >RIV/60076658:12520/24:43908408 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1007/s10530-024-03449-5" target="_blank" >https://doi.org/10.1007/s10530-024-03449-5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10530-024-03449-5" target="_blank" >10.1007/s10530-024-03449-5</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Crayfish invasions at a long-term ecological research site formerly occupied by the noble crayfish Astacus astacus

Popis výsledku v původním jazyce

Invasive crayfish, alongside their associated pathogens, have accelerated the decline of their Eurasian native counterparts, restricting their distributions to small populations nearing extinction. Using past sampling records, as well as conducting two field sampling campaigns with baited traps and environmental DNA (eDNA) in 2021 and 2023, we studied the distribution of invasive crayfish and their associated pathogen (Aphanomyces astaci) in the Rhine-Main-Observatory (RMO), a long-term ecological research (LTER) site in central Germany. This area of 1,058 km(2) was naturally occupied by the native endangered noble crayfish Astacus astacus exclusively. We only captured one native individual and detected two positive eDNA signals to A. astacus in the northeastern part of the RMO, suggesting a retraction of its historical range to a few headwater streams. In contrast, since 2000, four invasive crayfish species have been documented in large parts of the lower basin, with the signal crayfish, Pacifastacus leniusculus, progressing upstream. The upper stretches of the basin exhibited no traces of either invasive crayfish nor signs of the pathogen A. astaci, so that reintroduction programmes could be considered following careful assessment. Management actions are needed in potential contact zones where native and invasive populations can coexist, to protect the almost relict distribution of A. astacus in this German river basin.

Název v anglickém jazyce

Crayfish invasions at a long-term ecological research site formerly occupied by the noble crayfish Astacus astacus

Popis výsledku anglicky

Invasive crayfish, alongside their associated pathogens, have accelerated the decline of their Eurasian native counterparts, restricting their distributions to small populations nearing extinction. Using past sampling records, as well as conducting two field sampling campaigns with baited traps and environmental DNA (eDNA) in 2021 and 2023, we studied the distribution of invasive crayfish and their associated pathogen (Aphanomyces astaci) in the Rhine-Main-Observatory (RMO), a long-term ecological research (LTER) site in central Germany. This area of 1,058 km(2) was naturally occupied by the native endangered noble crayfish Astacus astacus exclusively. We only captured one native individual and detected two positive eDNA signals to A. astacus in the northeastern part of the RMO, suggesting a retraction of its historical range to a few headwater streams. In contrast, since 2000, four invasive crayfish species have been documented in large parts of the lower basin, with the signal crayfish, Pacifastacus leniusculus, progressing upstream. The upper stretches of the basin exhibited no traces of either invasive crayfish nor signs of the pathogen A. astaci, so that reintroduction programmes could be considered following careful assessment. Management actions are needed in potential contact zones where native and invasive populations can coexist, to protect the almost relict distribution of A. astacus in this German river basin.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10619 - Biodiversity conservation

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Biological Invasions

ISSN

1387-3547

e-ISSN

1573-1464

Svazek periodika

26

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

14

Strana od-do

4331-4344

Kód UT WoS článku

001318041400001

EID výsledku v databázi Scopus

2-s2.0-85204521742