Journal Article
Is the medium the message? Functional diversity across abiotic gradients in freshwater electric fishes. Electric fish functional diversity
Ford, K.L. and Albert, J.S.
Record Number:
5757
Year:
2022
Journal:
Integrative and Comparative Biology
Pages:
yy
Volume:
xx
Abstract:
Evolutionary transitions across abiotic gradients can occur among habitats at multiple
spatial scales, and among taxa and biotas through a range of ecological and evolutionary time
frames. Two diverse groups of electric fishes, Neotropical Gymnotiformes and Afrotropical
Mormyroidea, offer interesting examples of potentially convergent evolution in aspects of
morphological, physiological, and life history traits. We examined biogeographical,
morphological, and functional patterns across these two groups to assess the degree of
convergence in association with abiotic environmental variables. While there are superficial
similarities across the groups and continents, we found substantially more differences in terms of
habitat occupancy, electric signal diversity, and morphological disparity. These differences likely
correlate to differences in biogeographical histories across the Neotropics and Afrotropics, biotic
factors associated with aquatic life and electric signals, and sampling issues plaguing both
groups. Additional research and sampling are required to make further inferences about how
electric fishes transition throughout diverse freshwater habitats across both microevolutionary
and macroevolutionary scales. We find little evidence that abiotic gradients in the freshwater
habitat medium have driven convergent evolution of functional traits in these two continental
radiations of electric fishes
Times Cited:
1
Relevent Species:
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