Unexpected Shifts in Bivalve Function From Filtration to Transmission Risk

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F25%3A00637217" target="_blank" >RIV/60077344:_____/25:00637217 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/25:00143386 RIV/60460709:41210/25:102443

Result on the web

<a href="https://doi.org/10.1111/fwb.70063" target="_blank" >https://doi.org/10.1111/fwb.70063</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/fwb.70063" target="_blank" >10.1111/fwb.70063</a>

Result language

angličtina

Original language name

Unexpected Shifts in Bivalve Function From Filtration to Transmission Risk

Original language description

Understanding the complex interactions between filter-feeding species and zoonotic disease transmission in aquatic environments is crucial for accurately quantifying the ecosystem services provided by these organisms. This study explores for the first time the roles of freshwater bivalves in the transmission dynamics of emerging zoonotic nematodes using Angiostrongylus cantonensis, which has a complex life cycle (depending on invertebrate intermediate hosts). We used several European invasive and native molluscs and the Fatu-Hiva strain of A. cantonensis to address the situation during the spread of both the potential hosts and the parasite to Europe. Comparative analyses between four globally distributed freshwater bivalves (Corbicula fluminea, Sinanodonta woodiana, Dreissena polymorpha and Anodonta anatina) and two gastropod species (Biomphalaria glabrata and Planorbella duryi, known as common A. cantonensis hosts) were conducted to assess the elimination of two critical A. cantonensis developmental stages that may occur in aquatic environments. The clearance rates of early-stage (first-stage, known parasite of gastropods) and advanced-stage (third-stage, less host-specific) larvae from water and their potential developmental success within mollusc host tissues were evaluated. Unlike both gastropod species tested, the bivalves significantly depleted first-stage larvae from the water column, and the larvae did not develop to third-stage larvae in their tissues. However, only slight and statistically non-significant elimination from the water column by bivalves was observed in the case of third-stage larvae, even though some larvae still entered the bivalve body, and the third-stage larvae were found alive in the tissues of all studied mollusc species 16 days after infection. In particular, S. woodiana harboured a significantly higher abundance (mean of 2.48 larvae per gram of tissue) than the others. The results indicate that freshwater bivalves may play both a positive role in reducing A. cantonensis incidence and developmental success by eliminating first-stage larvae from aquatic environments, as well as a negative role, due to the susceptibility of all species (and S. woodiana in particular) to be infected by third-stage larvae, representing a newly described possible transmission pathway. Humans also consume this globally invasive bivalve in some regions where it coexists with A. cantonensis, presenting a potential health risk. This study underscores the stage specificity of the ecological functions of freshwater bivalves and the potential of using bivalves in disease control and prevention strategies, offering insights into ecosystem-based approaches to public health. These findings are particularly relevant for regions where freshwater bivalves are included in regulating ecosystem services and consumed, informing global strategies for waterborne disease management amidst ongoing species range shifts.

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

40301 - Veterinary science

Project

<a href="/en/project/GA22-26136S" target="_blank" >GA22-26136S: Ongoing global invasion of zoonotic parasitic nematode Angiostrongylus cantonensis: an assessment of risks of its emergence in Europe</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

Freshwater Biology

ISSN

0046-5070

e-ISSN

1365-2427

Volume of the periodical

70

Issue of the periodical within the volume

6

Country of publishing house

US - UNITED STATES

Number of pages

11

Pages from-to

e70063

UT code for WoS article

001517445500009

EID of the result in the Scopus database

2-s2.0-105008573873