2020
DOI: 10.1007/s10682-020-10043-3
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Morphological differentiation in African weakly electric fish (genus Campylomormyrus) relates to substrate preferences

Abstract: Under an ecological speciation scenario, the radiation of African weakly electric fish (genus Campylomormyrus) is caused by an adaptation to different food sources, associated with diversification of the electric organ discharge (EOD). This study experimentally investigates a phenotype-environment correlation to further support this scenario. Our behavioural experiments showed that three sympatric Campylomormyrus species with significantly divergent snout morphology differentially react to variation in substra… Show more

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Cited by 8 publications
(15 citation statements)
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“…2019; Amen et al. 2020), and water flow (e.g., Pakkasmaa and Piironen 2000; Langerhans 2008; Kelley et al. 2017).…”
Section: Figurementioning
confidence: 99%
“…2019; Amen et al. 2020), and water flow (e.g., Pakkasmaa and Piironen 2000; Langerhans 2008; Kelley et al. 2017).…”
Section: Figurementioning
confidence: 99%
“…The current study still provides some evidence that different snout morphologies and the associated divergence in the EOD translate into different prey spectra. As a different morphology of the feeding apparatus among the species may constitute a functional adaptation to exploiting different substrates (Amen et al 2020), the different prey spectra could simply reflect differential availability of different prey in the respective microhabitats. Unfortunately, no data on substrate-specific benthofauna are available for the Congo River.…”
Section: Dietary Analysis and The Radiation Scenariomentioning
confidence: 99%
“…The adaptive radiation within the genus Campylomormyrus has been studied with regard to molecular genetics (Canitz et al 2020;Lamanna et al 2016), electrophysiology (Feulner et al 2006), morphometry (Feulner et al 2007;Lamanna et al 2016), and behavior (Amen et al 2020;Nagel et alet al 2018a,b). In combination, these studies suggest an ecological speciation scenario that Campylomormyrus radiation is caused by an adaptation to exploit different microhabitats and/or food sources, associated with diversification of the EOD.…”
Section: Introductionmentioning
confidence: 99%
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