Upstream-downstream gradient in infection levels by fish parasites: a common river pattern?

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F13%3A00392202" target="_blank" >RIV/60077344:_____/13:00392202 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1017/S0031182012001527" target="_blank" >http://dx.doi.org/10.1017/S0031182012001527</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1017/S0031182012001527" target="_blank" >10.1017/S0031182012001527</a>

Result language

angličtina

Original language name

Upstream-downstream gradient in infection levels by fish parasites: a common river pattern?

Original language description

Physical habitat structure can influence the distribution and abundance of organisms. In rivers, stream drift, a common process originating from the unidirectional water flow, favours the displacement and downstream dispersion of invertebrates. This process could also generate a gradient in infection levels, leading to decreasing numbers of parasites per host as one moves upstream from the river mouth.We tested this hypothesis using 4 trematode species infecting the fish Gobiomorphus breviceps in the Manuherikia River (New Zealand). We analysed the abundance of each trematode infrapopulation as a function of distance from the river junction and fish size by generalized linear models. Our results supported the existence of a longitudinal gradient in trematode abundance along the river with a decreasing downstream-to-upstream continuum. This applied to 3 out of the 4 trematode species studied, suggesting that this might be a common pattern in river populations. Thus, the unidirectional r

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EH - Ecology - communities

OECD FORD branch

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Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2013

Confidentiality

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

Name of the periodical

Parasitology

ISSN

0031-1820

e-ISSN

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Volume of the periodical

140

Issue of the periodical within the volume

2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

266-274

UT code for WoS article

000314294100013

EID of the result in the Scopus database

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