Trophic ecology of the African riverine elephant fishes (Mormyridae)

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/60460709:41210/24:101082

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Trophic ecology of the African riverine elephant fishes (Mormyridae)

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Trophic ecology of the African riverine elephant fishes (Mormyridae)

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10613 - Zoology

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Ecology and Evolution

ISSN

2045-7758

e-ISSN

2045-7758

Svazek periodika

14

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

17

Strana od-do

e70173

Kód UT WoS článku

001298572600001

EID výsledku v databázi Scopus

2-s2.0-85202188218