Trophic ecology of the African riverine elephant fishes (Mormyridae)
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F24%3A10491195" target="_blank" >RIV/00216208:11310/24:10491195 - isvavai.cz</a>
Alternative codes found
RIV/60460709:41210/24:101082
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=4WKefF4BSV" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=4WKefF4BSV</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/ece3.70173" target="_blank" >10.1002/ece3.70173</a>
Alternative languages
Result language
angličtina
Original language name
Trophic ecology of the African riverine elephant fishes (Mormyridae)
Original language description
Multiple species of the elephant fishes (Mormyridae) commonly coexist in sympatry in most African tropical rivers and lakes. In this study, we investigated the trophic ecology and potential trophic niche partitioning of eleven mormyrid fish species from the Sanaga River system in Cameroon using the stable isotope composition of carbon and nitrogen in the muscle samples. Albeit most mormyrids mainly feed on invertebrates, we found differences in isotope ratios, and we report signs of the trophic niche partitioning among species. We further found significant differences in isotopic signatures within the Mormyrus genus, suggesting ecological niche diversification among three closely related species. We have also evaluated differences in the isotopic signals between seasons in four species, which could be possibly caused by species migration and/or anthropogenic agricultural activities. To evaluate body shape, we applied geometric morphometric analyses, and we show that most of the species are clearly morphologically separated. We focused on the mormyrid ecomorphology to identify a possible interaction between shape and ecology, and we found a relationship between the δ(13)C (but not δ(15)N) isotopic signal and morphology, suggesting their interplay during mormyrid evolution. Overall, we present robust evidence of the trophic niche partitioning within the mormyrid species community, and we integrate trophic ecology with morphometrics, shedding light on the enigmatic evolutionary history of these fascinating African fishes.The study is focused on the trophic ecology of Mormyridae based on the stable isotope analysis of carbon and nitrogen. We report on differences of the isotopic signal among eleven mormyrid species from the Sanaga River in Cameroon, and we provide evidence for trophic niche differentiation within the genus Mormyrus. We also noticed a potential relationship between the snout shape and the trophic position, and we further found an effect of seasonality on isotopic signatures.image.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10613 - Zoology
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Ecology and Evolution
ISSN
2045-7758
e-ISSN
2045-7758
Volume of the periodical
14
Issue of the periodical within the volume
8
Country of publishing house
GB - UNITED KINGDOM
Number of pages
17
Pages from-to
e70173
UT code for WoS article
001298572600001
EID of the result in the Scopus database
2-s2.0-85202188218