Ecomorphological diversification and convergence in fluvial cichlid fishes

Winemiller, Kirk O.; Kelso-Winemiller, Leslie C.; Brenkert, Antoinette L.

doi:10.1007/978-94-017-1356-6_17

Cited by 74 publications

(121 citation statements)

References 12 publications

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“…Sivasundar et al 2001;Montoya-Burgos 2003) have emphasized the association of phylogeographic patterns of fishes with orogenic patterns of river systems, allopatric models can not single handedly explain the alpha diversity of Neotropical freshwater fishes. In contrast, ecologists have documented differences in fish community structure (Mol 1994;Saint-Paul 2000), life history (Winemiller 1989), and form and function (Marrero and Winemiller 1993;Winemiller et al 1995) of various Neotropical freshwater fish species. To understand the processes that have lead to the alpha diversity and substantial phenotypic diversity of Neotropical fishes requires explicit testing of not only allopatric models but other models (e.g., the gradient model of Moritz et al 2000) that incorporate selection as a mechanism for speciation.…”

Section: Phylogeography Of Prochilodus Sppmentioning

confidence: 99%

Historical Demography, Selection, and Coalescence of Mitochondrial and Nuclear Genes in Prochilodus Species of Northern South America

Moyer¹,

Winemiller

McPhee³

et al. 2005

Evolution

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Fishes of the genus Prochilodus are ecologically and commercially important, ubiquitous constituents of large river biota in South America. Recent ecologic and demographic studies indicate that these fishes exist in large, stable populations with adult census numbers exceeding one million individuals. Abundance data present a stark contrast to very low levels of genetic diversity (theta) and small effective population sizes (Ne) observed in a mitochondrial (mt) DNA dataset obtained for two species, Prochilodus mariae, and its putative sister taxon, Prochilodus rubrotaeniatus. Both species occupy major river drainages (Orinoco, Essequibo, and Negro) of northeastern South America. Disparity between expectations based on current abundance and life history information and observed genetic data in these lineages could result from historical demographic bottlenecks, or alternatively, natural selection (i.e., a mtDNA selective sweep). To ascertain underlying processes that affect mtDNA diversity in these species we compared theta and Ne estimates obtained from two, unlinked nuclear loci (calmodulin intron-4 and elongation factor-1alpha intron-6) using an approach based on coalescent theory. Genetic diversity and Ne estimated from mtDNA and nuclear sequences were uniformly low in P. rubrotaeniatus from the Rio Negro, suggesting that this population has encountered a historical bottleneck. For all P. mariae populations, theta and Ne based on nuclear sequences were comparable to expectations based on current adult census numbers and were significantly greater than mtDNA estimates, suggesting that a selective mtDNA sweep has occurred in this species. Comparative genetic analysis indicates that a suite of evolutionary processes involving historical demography and natural selection have influenced patterns of genetic variation and speciation in this important Neotropical fish group.

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Section: Phylogeography Of Prochilodus Sppmentioning

confidence: 99%

Historical Demography, Selection, and Coalescence of Mitochondrial and Nuclear Genes in Prochilodus Species of Northern South America

Moyer¹,

Winemiller

McPhee³

et al. 2005

Evolution

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“…While the exact trophic habits of non-Midas cichlid fish in Nicaraguan crater lakes are not known, studies in other locations show that among the fish inhabiting these lakes A. centrarchus has the most similar feeding niche to the one of Midas cichlids. Indeed, both A. centrarchus and A. citrinellus are considered "deepbodied vegetation-dwelling invertebrate feeders" (Winemiller et al 1995), as opposed to other species which are more herbivorous, piscivorous, or substrate diggers.…”

Section: Introductionmentioning

confidence: 99%

Are sympatrically speciating Midas cichlid fish special? Patterns of morphological and genetic variation in the closely related species Archocentrus centrarchus

Fruciano

Franchini

Raffini

et al. 2016

Ecology and Evolution

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Established empirical cases of sympatric speciation are scarce, although there is an increasing consensus that sympatric speciation might be more common than previously thought. Midas cichlid fish are one of the few substantiated cases of sympatric speciation, and they formed repeated radiations in crater lakes. In contrast, in the same environment, such radiation patterns have not been observed in other species of cichlids and other families of fish. We analyze morphological and genetic variation in a cichlid species (Archocentrus centrarchus) that co‐inhabits several crater lakes with the Midas species complex. In particular, we analyze variation in body and pharyngeal jaw shape (two ecologically important traits in sympatrically divergent Midas cichlids) and relate that to genetic variation in mitochondrial control region and microsatellites. Using these four datasets, we analyze variation between and within two Nicaraguan lakes: a crater lake where multiple Midas cichlids have been described and a lake where the source population lives. We do not observe any within‐lake clustering consistent across morphological traits and genetic markers, suggesting the absence of sympatric divergence in A. centrarchus. Genetic differentiation between lakes was low and morphological divergence absent. Such morphological similarity between lakes is found not only in average morphology, but also when analyzing covariation between traits and degree of morphospace occupation. A combined analysis of the mitochondrial control region in A. centrarchus and Midas cichlids suggests that a difference between lineages in the timing of crater lake colonization cannot be invoked as an explanation for the difference in their levels of diversification. In light of our results, A. centrarchus represents the ideal candidate to study the genomic differences between these two lineages that might explain why some lineages are more likely to speciate and diverge in sympatry than others.

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“…Among fishes, cichlids (Teleostei: Cichlidae) are well known for their success at modifying a suction-based craniofacial theme to invade a diversity of trophic niches (Stiassny 1981;Winemiller et al 1995;Muschick et al 2012). Their value as a model group for understanding adaptive radiations is widely appreciated (Genner and Turner 2005;Seehausen 2006;Muschick et al 2014), with multiple lineages displaying recent and rapid bouts of diversification (Burress and Tan 2017).…”

mentioning

confidence: 99%

Feeding ecology underlies the evolution of cichlid jaw mobility

et al. 2018

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The fish feeding apparatus is among the most diverse functional systems in vertebrates. While morphological and mechanical variations of feeding systems are well studied, we know far less about the diversity of the motions that they produce. We explored patterns of feeding movements in African cichlids from Lakes Malawi and Tanganyika, asking whether the degree of kinesis is associated with dietary habits of species. We used geometric morphometrics to measure feeding kinesis as trajectories of shape change, based on 326 high-speed videos in 56 species. Cranial morphology was significantly related to feeding movements, both of which were distributed along a dietary axis associated with prey evasiveness. Small-mouthed cichlids that feed by scraping algae and detritus from rocks had low kinesis strikes, while large-mouthed species that eat large, evasive prey (fishes and shrimps) generated the greatest kinesis. Despite having higher overall kinesis, comparisons of trajectory shape (linearity) revealed that cichlids that eat mobile prey also displayed more kinematically conserved, or efficient, feeding motions. Our work indicates that prey evasiveness is strongly related to the evolution of cichlid jaw mobility, suggesting that this same relationship may explain the origins and diversity of highly kinetic jaws that characterize the super-radiation of spiny-rayed fishes.

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Ecomorphological diversification and convergence in fluvial cichlid fishes

Cited by 74 publications

References 12 publications

Historical Demography, Selection, and Coalescence of Mitochondrial and Nuclear Genes in Prochilodus Species of Northern South America

Historical Demography, Selection, and Coalescence of Mitochondrial and Nuclear Genes in Prochilodus Species of Northern South America

Are sympatrically speciating Midas cichlid fish special? Patterns of morphological and genetic variation in the closely related species Archocentrus centrarchus

Feeding ecology underlies the evolution of cichlid jaw mobility

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