M
Mascha&Ivo
Guest
US president Barak Obama gets a cichlid named on his honor
By Juan Miguel Artigas Azas
Melanie Stiassny (American Museum of Natural History) and Elizabeth Alter have described a new Teleogramma species after US president Barak Obama and his wife Michelle Obama; �in recognition of their commitment to science education, development, gender equality, and self-reliance for all peoples of African nations, and their dedication to environmental conservation in Africa and beyond�. The new species, Teleogramma obamaorum, was found in the main channel of the mighty Congo River at the western part of the Pool Malebo in the Democratic Republic of Congo, an area of turbulent and deep waters and of high species endemism. T. obamaorum differs from the four known Teleogramma species, among other many traits, by not having a dorsally depressed head and body, not showing sexual dimorphism (inferred not to be necessary in the dark habitat where they live) and having enlarged sensory pores. The new species could only be discovered during an extreme drought in 2011, which made the otherwise invisible deep rocky areas of the river surface. It has not being seeing since.
Stiassny, Melanie & S.E. Alter. 2015. "Phylogenetics of Teleogramma, a riverine clade of African cichlid fishes, with a description of the deepwater molluskivore � Teleogramma obamaorum � from the lower reaches of the middle Congo River". American Museum Novitates. (n. 3831), pp. 1-18.
~ linkje naar het nieuwsitem: http://www.cichlidae.com/news.php#id=69
Abstract: The lower Congo River and nearby habitats harbor numerous endemic lineages of cichlid fishes, including some with highly specialized morphologies. Based on morphological and molecular data, we herein describe a new species of Teleogramma, a member of the chromidotilapiine clade found on rocky outcrops in the lower reaches of the middle Congo River. The new species, T. obamaorum, is distinguished from congeners by numerous morphological and ecological attributes, including the lack of dorso-ventral head and body depression, absence of sexual dichromatism, and features of latero-sensory anatomy, pharyngeal and gut morphology, and dietary preference. Phylogenetic analyses of two nuclear and two mitochondrial loci using Bayesian and maximum-likelihood inference lend strong support for the taxonomic validity of T. obamaorum and provide preliminary estimates of species relationships within the genus. The discovery of a new, eco-morphologically distinctive cichlid species in the Congo River suggests that additional research focus on riverine clades has the potential to greatly contribute to our understanding of evolutionary dynamics in this hyperdiverse group of teleost fishes
~ linkje naar het wetenschappelijke artikel: http://digitallibrary.amnh.org/dspace/b ... sequence=1
Er was al een een ander visje naar Obama genoemd, de Etheostoma obama: http://blogs.scientificamerican.com/run ... -and-gore/
By Juan Miguel Artigas Azas
Melanie Stiassny (American Museum of Natural History) and Elizabeth Alter have described a new Teleogramma species after US president Barak Obama and his wife Michelle Obama; �in recognition of their commitment to science education, development, gender equality, and self-reliance for all peoples of African nations, and their dedication to environmental conservation in Africa and beyond�. The new species, Teleogramma obamaorum, was found in the main channel of the mighty Congo River at the western part of the Pool Malebo in the Democratic Republic of Congo, an area of turbulent and deep waters and of high species endemism. T. obamaorum differs from the four known Teleogramma species, among other many traits, by not having a dorsally depressed head and body, not showing sexual dimorphism (inferred not to be necessary in the dark habitat where they live) and having enlarged sensory pores. The new species could only be discovered during an extreme drought in 2011, which made the otherwise invisible deep rocky areas of the river surface. It has not being seeing since.
Stiassny, Melanie & S.E. Alter. 2015. "Phylogenetics of Teleogramma, a riverine clade of African cichlid fishes, with a description of the deepwater molluskivore � Teleogramma obamaorum � from the lower reaches of the middle Congo River". American Museum Novitates. (n. 3831), pp. 1-18.
~ linkje naar het nieuwsitem: http://www.cichlidae.com/news.php#id=69
Abstract: The lower Congo River and nearby habitats harbor numerous endemic lineages of cichlid fishes, including some with highly specialized morphologies. Based on morphological and molecular data, we herein describe a new species of Teleogramma, a member of the chromidotilapiine clade found on rocky outcrops in the lower reaches of the middle Congo River. The new species, T. obamaorum, is distinguished from congeners by numerous morphological and ecological attributes, including the lack of dorso-ventral head and body depression, absence of sexual dichromatism, and features of latero-sensory anatomy, pharyngeal and gut morphology, and dietary preference. Phylogenetic analyses of two nuclear and two mitochondrial loci using Bayesian and maximum-likelihood inference lend strong support for the taxonomic validity of T. obamaorum and provide preliminary estimates of species relationships within the genus. The discovery of a new, eco-morphologically distinctive cichlid species in the Congo River suggests that additional research focus on riverine clades has the potential to greatly contribute to our understanding of evolutionary dynamics in this hyperdiverse group of teleost fishes
~ linkje naar het wetenschappelijke artikel: http://digitallibrary.amnh.org/dspace/b ... sequence=1
Er was al een een ander visje naar Obama genoemd, de Etheostoma obama: http://blogs.scientificamerican.com/run ... -and-gore/