Pilferer, murderer of innocents or prey? The potential impact of killer shrimp (Dikerogammarus villosus) on crayfish

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F21%3A43902490" target="_blank" >RIV/60076658:12520/21:43902490 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1007/s00027-020-00762-8" target="_blank" >https://doi.org/10.1007/s00027-020-00762-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00027-020-00762-8" target="_blank" >10.1007/s00027-020-00762-8</a>

Result language

angličtina

Original language name

Pilferer, murderer of innocents or prey? The potential impact of killer shrimp (Dikerogammarus villosus) on crayfish

Original language description

Freshwater ecosystems worldwide are facing the establishment of non-native species, which, in certain cases, exhibit invasive characteristics. The impacts of invaders on native communities are often detrimental, yet, the number and spread of non-native invasive species is increasing. This is resulting in novel and often unexpected combinations of non-native and native species in natural communities. While the impact of invaders on native species is increasingly well-documented, the interactions of non-native invaders with other non-native invaders are less studied. We assessed the potential of an invasive amphipod, the killer shrimpDikerogammarus villosus(Sowinsky, 1894), to cope with other established invaders in European waters: North American crayfish of the Astacidae family-represented by signal crayfishPacifastacus leniusculus(Dana, 1852), and the Cambaridae family-represented by marbled crayfishProcambarus virginalisLyko, 2017. The main goal of this study was to investigate if killer shrimp, besides their role as prey of crayfish, can significantly influence their stocks by predating upon their eggs, hatchlings and free-moving early juveniles. Our results confirmed that killer shrimp can predate on crayfish eggs and hatchlings even directly from females abdomens where they are incubated and protected. As marbled crayfish have smaller and thinner egg shells as well as smaller juveniles than signal crayfish, they were more predated upon by killer shrimp than were signal crayfish. These results confirmed that the invasive killer shrimp can feed on different developmental stages of larger freshwater crustaceans and possibly other aquatic organisms.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10617 - Marine biology, freshwater biology, limnology

Project

<a href="/en/project/GA19-04431S" target="_blank" >GA19-04431S: Temperature driven changes in interactions and ecological roles of prominent crayfish invaders</a><br>

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2021

Confidentiality

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

Name of the periodical

Aquatic Sciences

ISSN

1015-1621

e-ISSN

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Volume of the periodical

83

Issue of the periodical within the volume

1

Country of publishing house

CH - SWITZERLAND

Number of pages

12

Pages from-to

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UT code for WoS article

000582469500001

EID of the result in the Scopus database

2-s2.0-85092629007