Phylogenomics of pike cichlids (Cichlidae: Crenicichla) of the C. mandelburgeri species complex: rapid ecological speciation in the Iguazú River and high endemism in the Middle Paraná basin

Piálek, Lubomír; Burress, Edward D.; Dragová, Klára; Almirón, Adriana Edith; Casciotta, Jorge Rafael; Říčan, Oldřich

doi:10.1007/s10750-018-3733-6

Cited by 32 publications

(64 citation statements)

References 70 publications

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“…Second, monophyletic groups of sympatric species of mormyrids, catfishes, and cichlids have been discovered in restricted segments of river drainages. Moreover, evidence of ecological divergence has been reported in some of these groups (Day, Bills, & Friel, ; Feulner, Kirschbaum, & Tiedemann, ; Feulner et al., ; Joyce et al., ; Koblmüller, Sturmbauer, Verheyen, Meyer, & Salzburger, ; Koblmüller et al., ; Kullander, Norén, Friðriksson, & Santos de Lucena, ; Piálek et al., , ; Schwarzer et al., ). Although some authors (Day et al., ; Joyce et al., ) suggest that particular groups originated in a paleolake, we believe that this explanation does not necessarily apply to all cases under consideration.…”

Section: Discussionmentioning

confidence: 99%

“…more open to gene flow compared to isolated lakes; Castric, Bonney, & Bernatchez, 2001). Nevertheless, some examples of adaptive radiation in the riverine ecosystems have recently been discovered in different fish groups, such as mormyrids (Feulner, Kirschbaum, Mamonekene, Ketmaier, & Tiedemann, 2007;Sullivan, Lavoué, & Hopkins, 2002), cyprinids (Dimmick, Berendzen, & Golubtsov, 2001;Roberts, 1998), and cichlids (Koblmüller et al, 2008;Piálek, Říčan, Casciotta, Almirón, & Zrzavý, 2012;Piálek et al, 2019;Schwarzer, Misof, Ifuta, & Schliewen, 2011). The formation of species flocks among distant lineages may indicate independent origins of the various species, and suggests that some conditions in riverine environments may promote sympatric speciation.…”

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confidence: 99%

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Adaptive radiation of barbs of the genusLabeobarbus(Cyprinidae) in an East African river

et al. 2019

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Large African barbs of the genus Labeobarbus constitute a hexaploid lineage (2n = 150). This group is widely distributed in African freshwaters, and exhibits profound phenotypic variation that could be a prerequisite for adaptive radiation. Using morphological, molecular, and stable isotope analyses, we investigated whether an adaptive radiation has occurred in a riverine assemblage of the Labeobarbus gananensis complex. This complex is composed of six phenotypically distinct sympatric forms inhabiting the Genale River (Ethiopian highlands, East Africa) in the Juba and Wabe–Shebelle drainages (Indian Ocean basin). Of the six forms, five were divergent in their mouth morphology, corresponding to generalised, lipped, scraping (two forms), and large‐mouthed phenotypes. One form had no mouth specialisation, but differed from the others in body shape (short and deep body; short form). Stable isotope analysis revealed differences in 15N among these forms, representing different foraging strategies (omnivorous, scraping, and piscivorous). Phylogenetic analysis of two mitochondrial DNA markers confirmed the monophyly of L. gananensis, suggesting an intra‐riverine radiation. However, the Genale assemblage appears to have originated through a combination of allopatric and sympatric events. Some of the specialised forms within the Juba and Wabe–Shebelle drainage originated independently from the local generalised forms in three different river regions. Each of these cases could be considered as a small species flock composed of two or three sympatric forms. Our study shows that adaptive radiation in rivers can be enhanced by a combination of sympatric speciation and temporal geographic isolation, leading to local sympatric speciation followed by migration.

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Section: Discussionmentioning

confidence: 99%

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confidence: 99%

Adaptive radiation of barbs of the genusLabeobarbus(Cyprinidae) in an East African river

et al. 2019

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“…ddRAD sequencing followed the methods (including endonucleases and size‐selection parameters) described in Piálek et al. (). Sequencing was performed on an Illumina HiSeq 2500 system (125 cycles P/E, version 4 kit) in the EMBL Genomic Core Facility, Heidelberg, Germany.…”

Section: Methodsmentioning

confidence: 99%

“…Genomic DNA was purified from each sample using the DNeasy TissueKit (Qiagen), according to the manufacturer's instructions. ddRAD sequencing followed the methods (including endonucleases and size-selection parameters) described in Piálek et al (2019). Sequencing was performed on an Illumina HiSeq 2500 system (125 cycles P/E, version 4 kit) in the EMBL Genomic Core Facility, Heidelberg, Germany.…”

Section: Genotypingmentioning

confidence: 99%

Sperm divergence in a passerine contact zone: Indication of reinforcement at the gametic level

et al. 2019

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Postcopulatory sexual selection may promote evolutionary diversification in sperm form, but the contribution of between‐species divergence in sperm morphology to the origin of reproductive isolation and speciation remains little understood. To assess the possible role of sperm diversification in reproductive isolation, we studied sperm morphology in two closely related bird species, the common nightingale (Luscinia megarhynchos) and the thrush nightingale (Luscinia luscinia), that hybridize in a secondary contact zone spanning Central and Eastern Europe. We found: (1) striking divergence between the species in total sperm length, accompanied by a difference in the length of the mitochondrial sperm component; (2) greater divergence between species in sperm morphology in sympatry than in allopatry, with evidence for character displacement in sperm head length detected in L. megarhynchos; (3) interspecific hybrids showing sperm with a length intermediate between the parental species, but no evidence for decreased sperm quality (the proportion of abnormal spermatozoa in ejaculates). Our results demonstrate that divergence in sperm morphology between the two nightingale species does not result in intrinsic postzygotic isolation, but may contribute to postcopulatory prezygotic isolation. This isolation could be strengthened in sympatry by reinforcement.

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“…Although examples of adaptive radiation in riverine fish are not particularly frequent, they have substantially increased during the last decades. Such evolutionary phenomena have been revealed by molecular data in the African mormyrids, mochokid catfishes and cyprinids [16][17][18][19][20] , as well as in the African and South American cichlids [21][22][23][24][25][26][27] . For example, cichlids of the genus Crenicichla Heckel 1840 from Paraná and Uruguay Rivers demonstrate bright morpho-ecological diversification and trophic resource partitioning.…”

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confidence: 95%

In the rivers: Multiple adaptive radiations of cyprinid fishes (Labeobarbus) in Ethiopian Highlands

Левин

Simonov

Dgebuadze

et al. 2020

Sci Rep

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Multiple repeated patterns of adaptive radiation were revealed in cyprinid fish inhabiting the compact geographic region of the ethiopian Highlands. We found four independently evolved radiations in the evolutionary hexaploid (2n = 150) Labeobarbus lineage based on matrilineal relationships of >800 individuals. Each radiation displayed similar patterns of mouth phenotype diversification, and included ecomorphs/species of the generalized, lipped, scraping (one or two), and large-mouthed (one to three) types. All radiations were detected in geographically isolated rivers, and originated from different ancestral populations. This is the first documented case in which numerous parallel radiations of fishes occurred-via different ways-in a riverine environment. Some radiations are very recent and monophyletic, while others are older and include ecomorphs that originated in separate mini flocks and later combined into one. The diversification bursts among Ethiopian Labeobarbus were detected in the mid-upper reaches of rivers (1050-1550 m above sea level), which likely offer ecological opportunities that include diverse habitats yet poor fauna (i.e. lower competition and relaxed selection). this promising example of parallel evolution of adaptive radiation warrants further investigation.In the pioneering work on South African cichlids and catfishes, Joyce et al. 21 and Day et al. 19 suggested that the riverine flocks are remnants of radiations that emerged in a paleolake. This suggestion is corroborated by the finding of the Lake Tanganyika endemics beyond the lake basin 33 . While some riverine radiations clearly have lacustrine origins, it is likely that other riverine radiations originate from sources other than lakes. Hence, we aimed to test whether the same environmental factors that trigger lacustrine radiation can also act in rivers.In general, the main prerequisites for adaptive radiation are: (1) environmental stability for evolutionarily significant periods (starting from thousands of years ago); and (2) physical isolation from the river drainages harboring diverse fish faunas 15,20,31 . The latter serves a dual purpose: first, it provides the ecological opportunities for niche divergence at the initial stages of radiation, and later it prevents the extinction of diverged forms caused by competition with highly specialized species from other systematic groups. These processes can operate in specific and rather rare parts of the riverine network. For example, the segment of the Genale River that harbours the radiating assemblage of distinct forms of the Labeobarbus is situated in the apparently old canyon, isolated by the Baratieri Falls from the lower reaches of the river system and characterized by the depauperate fish fauna 20 .If the fish radiations in rivers are similar to the evolutionary phenomena experienced in lakes, they should display similar evolutionary patterns. It is well known that adaptive radiations are often repeatable in different organisms as exemplified from spiders 34 , fish 35 , and liz...

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Phylogenomics of pike cichlids (Cichlidae: Crenicichla) of the C. mandelburgeri species complex: rapid ecological speciation in the Iguazú River and high endemism in the Middle Paraná basin

Cited by 32 publications

References 70 publications

Adaptive radiation of barbs of the genusLabeobarbus(Cyprinidae) in an East African river

Adaptive radiation of barbs of the genusLabeobarbus(Cyprinidae) in an East African river

Sperm divergence in a passerine contact zone: Indication of reinforcement at the gametic level

In the rivers: Multiple adaptive radiations of cyprinid fishes (Labeobarbus) in Ethiopian Highlands

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