A new mouth brooder species of Gymnogeophagus with hypertrophied lips (Cichliformes: Cichlidae)
نویسندگان
چکیده
منابع مشابه
A new genus for Melanochromis labrosus, a problematic Lake Malawi cichlid with hypertrophied lips (Teleostei: Cichlidae)
Melanochromis labrosus is the only one of the 800 or so endemic cichlid species in Lake Malawi whose placement with mbuna or non-mbuna has been disputed on morphological grounds. Here, we redescribe M. labrosus using all obtainable specimens collected since its original description. In addition, we extensively survey vertebral counts in the mbuna. To determine if M. labrosus belongs with the mb...
متن کاملCytogenetic characterization of Geophagus brasiliensis and two species of Gymnogeophagus (Cichlidae: Geophaginae) from Guaiba Lake, RS, Brazil.
The karyotypes of three species of fish of the Cichlidae family from the Forqueta river and several locations in Guaiba lake/RS (Brazil) were analyzed. All species presented 2n=48, while Gymnogeophagus gymnogenys showed two karyotypic formulae: 4m+44st-a with FN=52 and 6m+42st-a with FN=54. Gymnogeophagus labiatus presented 4m+4sm+40st-a and FN=56 and Geophagus brasiliensis 4sm+44st-a and FN=52...
متن کاملBody Size Diversity and Frequency Distributions of Neotropical Cichlid Fishes (Cichliformes: Cichlidae: Cichlinae)
Body size is an important correlate of life history, ecology and distribution of species. Despite this, very little is known about body size evolution in fishes, particularly freshwater fishes of the Neotropics where species and body size diversity are relatively high. Phylogenetic history and body size data were used to explore body size frequency distributions in Neotropical cichlids, a broad...
متن کاملIncipient speciation driven by hypertrophied lips in Midas cichlid fishes?
Sympatric speciation has been debated in evolutionary biology for decades. Although it has gained in acceptance recently, still only a handful of empirical examples are seen as valid (e.g. crater lake cichlids). In this study, we disentangle the role of hypertrophied lips in the repeated adaptive radiations of Nicaraguan crater lake cichlid fish. We assessed the role of disruptive selection and...
متن کاملWhat big lips are good for: on the adaptive function of repeatedly evolved hypertrophied lips of cichlid fishes
Linking phenotypic traits to an adaptive ecological function is a major goal of evolutionary biology. However, this task is challenging and has been accomplished in only a handful of species and ecological model systems. The repeatedly evolved adaptive radiations of cichlid fishes are composed of an enormously diverse set of species that differ in trophic morphology, body shape, coloration, and...
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ژورنال
عنوان ژورنال: Neotropical Ichthyology
سال: 2018
ISSN: 1982-0224,1679-6225
DOI: 10.1590/1982-0224-20180118