Susceptibility to metazoan parasite infection in amphimictic diploid and induced triploid tench (Tinca tinca L., 1758): the role of parasites in fish aquaculture

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F25%3A00642684" target="_blank" >RIV/68081766:_____/25:00642684 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/25:00143248

Result on the web

<a href="https://www.frontiersin.org/journals/veterinary-science/articles/10.3389/fvets.2025.1686708/full" target="_blank" >https://www.frontiersin.org/journals/veterinary-science/articles/10.3389/fvets.2025.1686708/full</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3389/fvets.2025.1686708" target="_blank" >10.3389/fvets.2025.1686708</a>

Result language

angličtina

Original language name

Susceptibility to metazoan parasite infection in amphimictic diploid and induced triploid tench (Tinca tinca L., 1758): the role of parasites in fish aquaculture

Original language description

Introduction Artificial induction of polyploidy in fishes is a widely used method in commercial aquaculture due to its economic potential and its association with changes in cell morphology and physiology that can significantly affect individual fitness. Using tench (Tinca tinca, Cyprinidae), a fish species extensively farmed in European aquaculture, we investigated differences in parasite susceptibility between triploid and diploid fish and analyzed the potential effect of metazoan parasite infection on fish condition, physiology, and health status.Methods Amphimictic diploid and induced triploid specimens collected from a breeding pond were examined during four sampling events over the course of one year, focusing on the presence of metazoan parasites and selected fish condition, physiological, and immune parameters.Results Diploids generally exhibited a higher overall parasite load than triploids throughout the year, however, this difference was statistically significant only in summer, coinciding with the extremely high abundance of the tench-specific Asymphylodora tincae. Host ploidy appeared to influence susceptibility or resistance to particular parasite species. While amphimictic diploid tench showed higher susceptibility to adult trematode A. tincae, triploid tench were more parasitized by the larval cestode Valipora campylancristrota. No difference in abundance of monogenean Gyrodactylus tincae was observed between amphimictic diploid and induced triploid specimens. Other parasites were relatively rare in both groups. Although no clear association between parasite infection and the measured physiological or immune parameters was found, significant negative correlations were more frequently observed in diploid fish than in triploids.Discussion The differences in parasite infection between triploid and diploid tench and the associations between parasite load and condition- and health-related traits may be explained by (1) presumed higher heterozygosity in triploids, (2) physiological differences related to cell size and number of cells in key organs and tissues, (3) variation in feeding performance, and (4) host-parasite coevolutionary interactions.

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

—

OECD FORD branch

40103 - Fishery

Project

<a href="/en/project/GBP505%2F12%2FG112" target="_blank" >GBP505/12/G112: ECIP - European Centre of Ichtyoparasitology</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Frontiers in Veterinary Science

ISSN

2297-1769

e-ISSN

2297-1769

Volume of the periodical

12

Issue of the periodical within the volume

NOV

Country of publishing house

CH - SWITZERLAND

Number of pages

16

Pages from-to

1686708

UT code for WoS article

001626011400001

EID of the result in the Scopus database

2-s2.0-105023693901