scholarly journals Comparative Phylogenetic Analyses of the Adaptive Radiation of Lake Tanganyika Cichlid Fish: Nuclear Sequences Are Less Homoplasious But Also Less Informative Than Mitochondrial DNA

2005 ◽  
Vol 61 (5) ◽  
pp. 666-681 ◽  
Author(s):  
Céline Clabaut ◽  
Walter Salzburger ◽  
Axel Meyer
Keyword(s):  
Mitochondrial Dna ◽  
Adaptive Radiation ◽  
Lake Tanganyika ◽  
Phylogenetic Analyses ◽  
Cichlid Fish

scholarly journals The Adaptive Radiation of Cichlid Fish in Lake Tanganyika: A Morphological Perspective

2011 ◽  
Vol 2011 ◽  
pp. 1-14 ◽  
Author(s):  
Tetsumi Takahashi ◽  
Stephan Koblmüller
Keyword(s):  
East Africa ◽  
Adaptive Radiation ◽  
Lake Tanganyika ◽  
Cichlid Fish ◽  
Ancient Lakes ◽  
Species Assemblage ◽  
Cichlid Species ◽  
Morphological Studies ◽  
Rapid Speciation ◽  
Explosive Speciation

Lake Tanganyika is the oldest of the Great Ancient Lakes in the East Africa. This lake harbours about 250 species of cichlid fish, which are highly diverse in terms of morphology, behaviour, and ecology. Lake Tanganyika's cichlid diversity has evolved through explosive speciation and is treated as a textbook example of adaptive radiation, the rapid differentiation of a single ancestor into an array of species that differ in traits used to exploit their environments and resources. To elucidate the processes and mechanisms underlying the rapid speciation and adaptive radiation of Lake Tanganyika's cichlid species assemblage it is important to integrate evidence from several lines of research. Great efforts have been, are, and certainly will be taken to solve the mystery of how so many cichlid species evolved in so little time. In the present review, we summarize morphological studies that relate to the adaptive radiation of Lake Tanganyika's cichlids and highlight their importance for understanding the process of adaptive radiation.

Complete mitochondrial DNA replacement in a Lake Tanganyika cichlid fish

2009 ◽  
Vol 18 (20) ◽  
pp. 4240-4255 ◽  
Author(s):  
B. NEVADO ◽  
S. KOBLMÜLLER ◽  
C. STURMBAUER ◽  
J. SNOEKS ◽  
J. USANO-ALEMANY ◽  
...  
Keyword(s):  
Mitochondrial Dna ◽  
Lake Tanganyika ◽  
Cichlid Fish

scholarly journals Depth and substratum differentiations among coexisting herbivorous cichlids in Lake Tanganyika

2016 ◽  
Vol 3 (11) ◽  
pp. 160229 ◽  
Author(s):  
Hiroki Hata ◽  
Haruki Ochi
Keyword(s):  
Adaptive Radiation ◽  
Rocky Shore ◽  
Lake Level ◽  
Lake Tanganyika ◽  
Cichlid Fish ◽  
Species Number ◽  
Niche Segregation ◽  
Cichlid Species ◽  
Feeding Territory ◽  
Shed Light

Cichlid fish in Lake Tanganyika represent a system of adaptive radiation in which eight ancestral lineages have diversified into hundreds of species through adaptation to various niches. However, Tanganyikan cichlids have been thought to be oversaturated, that is, the species number exceeds the number of niches and ecologically equivalent and competitively even species coexist. However, recent studies have shed light on niche segregation on a finer scale among apparently equivalent species. We observed depth and substratum preferences of 15 herbivorous cichlids from four ecomorphs (i.e. grazer, browser, scraper and scooper) on a rocky littoral slope for 14 years. Depth differentiation was detected among grazers that defended feeding territories and among browsers with feeding territories. Cichlid species having no feeding territory also showed specificity on depth and substratum, resulting in habitat segregation among species that belong to the same ecomorph. Phylogenetically close species did not occupy adjacent depths, nor the opposite depth zones. Our findings suggest that apparently equivalent species of the same ecomorph coexist parapatrically along depth on a few-metre scale, or coexist with different substratum preferences on the rocky shore, and this niche segregation may have been acquired by competition between encountering equivalent species through repetitive lake-level fluctuations.

scholarly journals Sexual dimorphism and population divergence in the Lake Tanganyika cichlid fish genus Tropheus

2010 ◽  
Vol 7 (1) ◽  
pp. 4 ◽  
Author(s):  
Juergen Herler ◽  
Michaela Kerschbaumer ◽  
Philipp Mitteroecker ◽  
Lisbeth Postl ◽  
Christian Sturmbauer
Keyword(s):  
Sexual Dimorphism ◽  
Lake Tanganyika ◽  
Cichlid Fish ◽  
Population Divergence

scholarly journals The genomic substrate for adaptive radiation in African cichlid fish

Nature ◽  
2014 ◽  
Vol 513 (7518) ◽  
pp. 375-381 ◽  
Author(s):  
David Brawand ◽  
Catherine E. Wagner ◽  
Yang I. Li ◽  
Milan Malinsky ◽  
Irene Keller ◽  
...  
Keyword(s):  
Adaptive Radiation ◽  
Cichlid Fish ◽  
African Cichlid

scholarly journals First Record of a Novel Mitochondrial DNA Haplotype of a Marble Trout Lineage of Salmo Trutta in Turkey

10.4194/ga452 ◽  
2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Fevzi Bardakci ◽  
Nazan Acar ◽  
Tulin Arslan ◽  
Riadh Badraoui
Keyword(s):  
Mitochondrial Dna ◽  
Salmo Trutta ◽  
Sequence Data ◽  
Phylogenetic Analyses ◽  
Aegean Sea ◽  
First Record ◽  
Unique Haplotype ◽  
Marble Trout ◽  
Mitochondrial Dna Control Region ◽  
Mitochondrial Dna Haplotype

A new record of a marble trout mtDNA haplotype known to be restricted to Adriatic basin (called marmoratus lineage within Salmo trutta complex) has been reported from Eşen Stream in the Aegean Sea basin of southeastern Turkey, based on sequence data of the mitochondrial DNA control region. The results of this study showed a single unique haplotype from this population, called MATR1. Phylogenetic analyses of this haplotype along with other haplotypes belonging to different mitochondrial DNA lineages of the S. trutta complex confirmed the existence of the marmoratus lineage in Turkey, suggesting a possible river capture between the Adriatic and Aegean Sea basins until the last (Würmian) marine regression.

scholarly journals A new species of Amphisbaena (Squamata: Amphisbaenidae) from the Orinoquian region of Colombia

2021 ◽  
Vol 71 ◽  
pp. 55-74
Author(s):  
Juan José Torres-Ramírez ◽  
Teddy Angarita-Sierra ◽  
Mario Vargas-Ramírez
Keyword(s):  
Mitochondrial Dna ◽  
New Species ◽  
Phylogenetic Analyses ◽  
Similar Species ◽  
General Knowledge ◽  
Southern Brazil ◽  
Base Pairs ◽  
Northern South America ◽  
Great Genetic Distance ◽  
A New Species

In northern South America, amphisbaenians are rarely seen among the herpetofauna.Thus, general knowledge about them is very poor. During a herpetological survey in 2012 at Casanare, Colombia, we found two specimens of an unusual Amphisbaena. A third specimen sharing the same morphotype labeled Amphisbaena sp. from Vichada department was found deposided in an Colombian reptile collection. Based on morphological analyses together with phylogenetic analyses of 1029 base pairs of the mitochondrial DNA (mtDNA), we describe a new species of Amphisbaena that inhabits in the Orinoquian region of Colombia. The new species is part of a phylogenetic clade together with A. mertensii and A. cunhai (central-southern Brazil), exhibiting a great genetic distance (26.1–28.9%) between the newly identified lineage versus those taxa, and versus the sympatric taxa A. alba and A. fuliginosa. Morphologically, this new Amphisbaena can be distinguished from their congeners by characters combination of number of preocloacal pores, absence of malar scale, postgenial scales and body and caudal annuli counts. Amphisbaena gracilis is on morphology grounds the most similar species. However, the new species can be distinguished from it by having higher body annuli counts, angulus ories aliegned with the edges of the ocular scales and center of frontal scales, less number of large middorsal segments of the first and second body annulus, and rostral scale visible from above. The description of this new Amphisbaena species points out the urgent need to increase the knowledge of worm lizards in Colombia

scholarly journals Hares on thin ice: Introgression of mitochondrial DNA in hares and its implications for recent phylogenetic analyses

2006 ◽  
Vol 40 (2) ◽  
pp. 640-641 ◽  
Author(s):  
Paulo C. Alves ◽  
D. James Harris ◽  
José Melo-Ferreira ◽  
Madalena Branco ◽  
Franz Suchentrunk ◽  
...  
Keyword(s):  
Mitochondrial Dna ◽  
Phylogenetic Analyses
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