Morphometric and genetic evidence for cryptic diversity of Gyrodactylus nebulosus (Monogenea) in non-native European populations of Ameiurus nebulosus and A. melas

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F20%3A00532900" target="_blank" >RIV/68081766:_____/20:00532900 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1017/S0031182020001195" target="_blank" >http://dx.doi.org/10.1017/S0031182020001195</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1017/S0031182020001195" target="_blank" >10.1017/S0031182020001195</a>

Result language

angličtina

Original language name

Morphometric and genetic evidence for cryptic diversity of Gyrodactylus nebulosus (Monogenea) in non-native European populations of Ameiurus nebulosus and A. melas

Original language description

Gyrodactylid parasites were observed on non-native populations of North-Amercian freshwater catfishes, Ameiurus nebulosus and Ameiurus melas (Siluriformes: Ictaluridae), at several sites in the Elbe River basin, Czech Republic, Europe. Using a combination of morphological and genetic analyses, the parasites infecting A. nebulosus were determined to be Gyrodactylus nebulosus, a North American parasite co-introduced to Europe along with its Ameiurus fish hosts. Subtle morphometrical differences, as well as seasonal variations, were observed among parasites collected from A. nebulosus and A. melas. The host-related variation was further supported through genetic analysis of the partial 18S rDNA, ITS1-5.8S-ITS2 and COI, showing 0.2, 3.0 and 4.8 % divergence, respectively. Consistent genetic differences indicated there were two distinct genotypes. Subtle morphological differences associated with shape of sickle toe, anchor root and ventral bar membrane, according to host species, also supported the description of a new cryptic species, Gyrodactylus melas n. sp., infecting A. melas. Multivariate morphometrical analysis of haptoral hard parts showed significant differences between the anchor lengths between G. nebulosus and G. melas n. sp. However, the measurements of the haptoral hard structures partially overlapped between species, limiting the usage of these parameters for species delineation.

Czech name

—

Czech description

—

Type

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

CEP classification

—

OECD FORD branch

10618 - Ecology

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

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

Name of the periodical

Parasitology

ISSN

0031-1820

e-ISSN

—

Volume of the periodical

147

Issue of the periodical within the volume

14

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

1700-1711

UT code for WoS article

000594718800010

EID of the result in the Scopus database

2-s2.0-85091838019