Faculty Opinions recommendation of Genetic analysis of mch mutants in two Methanosarcina species demonstrates multiple roles for the methanopterin-dependent C-1 oxidation/reduction pathway and differences in H(2) metabolism between closely related species.

2005 ◽  
Author(s):  
Kevin Sowers
Keyword(s):  
Genetic Analysis ◽  
Related Species ◽  
Multiple Roles ◽  
Closely Related Species ◽  
Oxidation Reduction ◽  
Methanosarcina Species

Electrogena brulini sp. nov. and E. vipavensis Zurwerra & Tomka, 1986 syn. nov. revealed by integrative taxonomy of E. gridellii (Grandi, 1953) (Ephemeroptera: Heptageniidae)

Zootaxa ◽  
2017 ◽  
Vol 4362 (3) ◽  
pp. 359 ◽  
Author(s):  
ANDRE WAGNER ◽  
LAURENT VUATAZ ◽  
MICHEL SARTORI
Keyword(s):  
New Species ◽  
Genetic Analysis ◽  
Related Species ◽  
Mitochondrial Gene ◽  
Integrative Taxonomy ◽  
Northern Italy ◽  
Closely Related Species ◽  
Colour Patterns ◽  
A New Species ◽  
Subjective Synonym

A new species belonging to the speciose genus Electrogena Zurwerra & Tomka, 1985 is described based on all stages from material collected in Switzerland, northern Italy and Slovenia. Electrogena brulini Wagner sp. nov. is closely related to E. gridellii (Grandi, 1953). A genetic analysis based on the mitochondrial gene CO1, including 9 specimens from 5 populations, reveals a K2P distance of 22% between both species. Our investigations demonstrate that the description of the nymph of E. gridellii sensu Belfiore (1996) refers in fact to both species. Therefore, E. gridellii is redescribed in all stages. The number of bristles on each mandibular prostheca in the nymphs, the shape of titillators in male genitalia and the shape of the subanal plate in female imagines are the main characters allowing discrimination of these two species. This study also shows that in this case it is possible and helpful to use colour patterns to separate two closely related species. The re-examination of the type material of Electrogena vipavensis Zurwerra & Tomka, 1986 described from western Slovenia indicates that this species is a junior subjective synonym of E. gridellii. 

scholarly journals Genetic analysis of a wild-caught hybrid between non-sister Heliconius butterfly species

2007 ◽  
Vol 3 (6) ◽  
pp. 660-663 ◽  
Author(s):  
Kanchon K Dasmahapatra ◽  
Armando Silva-Vásquez ◽  
Jae-Woo Chung ◽  
James Mallet
Keyword(s):  
Gene Flow ◽  
Genetic Analysis ◽  
Related Species ◽  
Species Boundaries ◽  
Butterfly Species ◽  
Distant Hybridization ◽  
Closely Related Species ◽  
Naturally Occurring ◽  
Heliconius Melpomene ◽  
Wing Coloration

Interspecific hybridization occurs regularly in wild Heliconius butterflies, although hybrid individuals are usually very rare. However, hybridization generally occurs only between the most closely related species. We report a rare naturally occurring hybrid between non-sister species and carry out the first genetic analysis of such distant hybridization. Mitochondrial and nuclear genes indicate that the specimen is an F 1 hybrid between a female Heliconius ethilla and a male Heliconius melpomene , originating from a group of 13 species estimated to have diverged over 2.5 Myr ago. The presence of such distant natural hybrids, together with evidence for backcrossing, suggests that gene flow across species boundaries can take place long after speciation. Adaptive genes such as those involved in wing coloration could thus be widely shared among members of this highly mimetic genus.

A Genetic Analysis of Two Recently Described Peat Moss Species, Sphagnum atlanticum and S. bergianum (Sphagnaceae)

2009 ◽  
Vol 34 (1) ◽  
pp. 6-12 ◽  
Author(s):  
Blanka Shaw ◽  
Stefano Terracciano ◽  
A. Jonathan Shaw
Keyword(s):  
North America ◽  
Genetic Analysis ◽  
Microsatellite Loci ◽  
Related Species ◽  
Peat Moss ◽  
Eastern North America ◽  
Gene Pools ◽  
Similar Species ◽  
Closely Related Species ◽  
Moss Species

Microsatellite markers were used to test whether two recently described species of Sphagnum (Bryophyta), S. atlanticum R.E. Andrus and S. bergianum R.E. Andrus, represent distinct gene pools. The first species is considered endemic to eastern North America while the second species has been reported from Alaska and Newfoundland. The results indicate that S. atlanticum does not differ genetically from the closely related species, S. torreyanum, also restricted to eastern North America. In fact, some samples that are identical across all 15 microsatellite loci have been distinguished morphologically as these two species. Plants of S. bergianum from Alaska are closely related genetically to Alaskan plants of the similar species, S. subfulvum, whereas Newfoundland plants of S. bergianum are more closely related to Newfoundland plants of S. subfulvum. Alaskan versus Newfoundland plants of S. subfulvum s.l. (including S. bergianum) are differentiated at microsatellite loci. Another closely related species, S. subnitens, is distinct from S. subfulvum and S. bergianum. Sphagnum atlanticum is synonymized under S. torreyanum and S. bergianum is synonymized under S. subfulvum.

scholarly journals Study of microsatellite cross-species specificity in freshwater sponge families Lubomirskiidae and Spongillidae

2020 ◽  
pp. 1084-1089
Author(s):  
A.S. Yakhnenko ◽  
◽  
◽  
V.B. Itskovich ◽  
Keyword(s):  
Genetic Analysis ◽  
Microsatellite Markers ◽  
Related Species ◽  
Population Genetic ◽  
Genomic Data ◽  
Species Specificity ◽  
Careful Study ◽  
Freshwater Sponge ◽  
Population Genetic Analysis ◽  
Closely Related Species

Abstract. The endemic Baikal sponges of the Lubomirskiidae family are a unique bouquet of closely related species formed from a common ancestor with the present-day cosmopolitans, Ephydatia muelleri, facing today are big ecological problems that require careful study. It is necessary to analyze the genetic structure of endemic freshwater sponge populations for a better understanding of the influence of such adaptive features on permanent habitat conditions as the loss of the ability to form gemmules. Microsatellite markers are best suited for analyzing population structure. The closest species to them, for which microsatellite markers have been developed to date, is Ephydatia fluviatilis. In this article, we check the suitability of these markers for population genetic analysis of Lubomirskia baikalensis and E.muelleri species using bioinformatic and molecular genetic methods of analysis, since the cross-species specificity of microsatellite markers has been shown for many closely related species. Despite the revealed 45.5% cross-species specificity for both L.baikalensis and E.muelleri at the level of genomic data, qualitative population genetic analysis requires the development of specific microsatellite markers de novo based on the genomic data of L.baikalensis and E.muelleri.

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