scholarly journals Speciation and genetic divergence of three species of charr from ancient Lake El'gygytgyn (Chukotka) and their phylogenetic relationships with other representatives of the genusSalvelinus

2015 ◽  
Vol 116 (1) ◽  
pp. 63-85 ◽  
Author(s):  
Alexander G. Osinov ◽  
Anna L. Senchukova ◽  
Nikolai S. Mugue ◽  
Sergei D. Pavlov ◽  
Igor A. Chereshnev
Keyword(s):  
Genetic Divergence ◽  
Phylogenetic Relationships ◽  
Ancient Lake ◽  
Lake El’Gygytgyn

Complete mitogenome reveals genetic divergence and phylogenetic relationships among Indian cattle (Bos indicus) breeds

2018 ◽  
Vol 30 (3) ◽  
pp. 219-232 ◽  
Author(s):  
R. Kumar Pramod ◽  
Dinesh Velayutham ◽  
Sajesh P. K. ◽  
Beena P. S. ◽  
Anil Zachariah ◽  
...  
Keyword(s):  
Genetic Divergence ◽  
Phylogenetic Relationships ◽  
Bos Indicus ◽  
Complete Mitogenome ◽  
Indian Cattle

scholarly journals Phylogenetic relationships among sandfly fever group viruses (Phlebovirus: Bunyaviridae) based on the small genome segment

2007 ◽  
Vol 88 (8) ◽  
pp. 2312-2319 ◽  
Author(s):  
Fangling Xu ◽  
Hongli Chen ◽  
Amelia P. A. Travassos da Rosa ◽  
Robert B. Tesh ◽  
Shu-Yuan Xiao
Keyword(s):  
Genetic Divergence ◽  
Phylogenetic Relationships ◽  
Phylogenetic Analyses ◽  
Genome Segment ◽  
Open Reading Frame ◽  
Reading Frame ◽  
Small Genome ◽  
Sequence Identity ◽  
Nucleoprotein N ◽  
Antigenic Relationships

The phleboviruses are more diverse in terms of arthropod vectors and antigenic relationships than most other genera of arthropod-borne viruses. In this study, 30 sandfly fever group viruses from the Naples, Sicilian, Punta Toro, Icoaraci and Frijoles serocomplexes were sequenced. Phylogenetic analyses were performed based on the sequence of the open reading frame for the nucleoprotein (N) and non-structural (NSs) protein genes of the small (S) segment. The five resultant genotypic lineages correlated with the serological grouping and were similar to analysis of M segment sequences. The sequence identity for N and NSs genes within the Sicilian, Naples, Punta Toro, Icoaraci and Frijoles serocomplexes was determined. The results indicated that genetic divergence for the S segment is lower than that for the M segment, suggesting that the S segment is more stable during evolution.

scholarly journals Phylogenetic Relationships of Micronesian White-Eyes Based on Mitochondrial Sequence Data

The Auk ◽  
2000 ◽  
Vol 117 (2) ◽  
pp. 355-365 ◽  
Author(s):  
Beth Slikas ◽  
Isaac B. Jones ◽  
Scott R. Derrickson ◽  
Robert C. Fleischer
Keyword(s):  
Genetic Divergence ◽  
Phylogenetic Relationships ◽  
Sequence Data ◽  
Sequence Divergence ◽  
Single Species ◽  
Additional Species ◽  
Data Set ◽  
Mitochondrial Sequence ◽  
Sister Relationships ◽  
Optimal Trees

Abstract Using mitochondrial sequence data, we estimated phylogenetic relationships and genetic divergence among selected species of white-eyes (Zosteropidae). We focused on taxa endemic to islands in Micronesia, specifically Zosterops conspicillatus, Z. semperi, Z. hypolais, Rukia oleaginea, and Cleptornis marchei. We also included in our data set five additional species of Zosterops from the Indo-Australian region and three species from Africa, as well as additional passerine outgroups. Our mitochondrial sequence data revealed substantial genetic divergence (5.7 to 7.3%) among Z. conspicillatus, Z. semperi, and Z. hypolais, three taxa that formerly were treated as a single species. In addition, a sequence divergence of 6.5 ± SE of 1.7% was found between the population of Z. conspicillatus from Rota and “conspecific” populations on Guam, Tinian, and Saipan. The distinctiveness of the Rota population suggests that this taxon should be recognized as a distinct species, a result that bears on the conservation of this population because it has been declining dramatically in recent years. All optimal trees based on analysis of the mitochondrial sequence data place Rukia oleaginea within the genus Zosterops. In all optimal trees, Cleptornis marchei positions as the sister taxon to a clade including all other zosteropids included in this study. The trees based on our data strongly contradict the traditional classification of Cleptornis as a honeyeater (family Meliphagidae). Our data cannot resolve with any confidence the sister relationships of the insular endemic white-eyes, although the optimal trees suggest multiple colonizations of Micronesia by more than one white-eye lineage.

scholarly journals DNA barcoding and hypopygium shape support delimitation of sympatric Dissomphalus species (Hymenoptera, Bethylidae) from the Atlantic rainforest

ZooKeys ◽  
2020 ◽  
Vol 959 ◽  
pp. 87-97
Author(s):  
Marina Monjardim ◽  
Celso O. Azevedo ◽  
Valeria Fagundes
Keyword(s):  
Genetic Divergence ◽  
Phylogenetic Relationships ◽  
Mitochondrial Gene ◽  
Sympatric Species ◽  
Species Group ◽  
The Third ◽  
Neotropical Species ◽  
Group Members ◽  
Species Groups ◽  
Species Specific

Dissomphalus is a cosmopolitan genus of Bethylidae and has 269 Neotropical species divided into 32 species-groups, mostly defined by the genital and the tergal process structures. Dissomphalus rectilineus and D. concavatus are sympatric species in the ulceratus species-group. Members of the species-group share many similarities in the morphology of the head, hypopygium, tergal process and genitalia, but may be distinguished by the structure of the hypopygium. Previous studies have found intermediate structures of the hypopygium in the sympatric areas and raised questions about the distinctiveness of these two species. We sequenced 340 bp of the mitochondrial gene cytochrome oxidase I of 29 specimens from Brazil and Paraguay, calculated the genetic divergence among specimens, and recovered the phylogenetic relationships between taxa. In addition, we compared the morphology of the hypopygium to evaluate its use as a species-specific diagnostic character using the genetic divergence values. We recovered three well-supported monophyletic groups (intraclade divergence from 1.3 to 13.4%) and three hypopygium morphologies associated with each clade, two of them associated with D. rectilineus and D. concavatus (as described in the literature); the third one is new, not associated with any known species. The divergence between the D. rectilineus and D. concavatus clades was 19%, while the third clade is divergent from each species by 19–20%. If fully described, the hypopygium shape associated with the COI sequence will represent an extremely promising approach to the diagnosis of Dissomphalus species.

scholarly journals Molecular data suggest that Heteromys irroratus bulleri should be recognized as a species-level taxon

Therya ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 139-148
Author(s):  
Maria A. Gutiérrez-Costa ◽  
Francisco X. González-Cózatl ◽  
María Magdalena Ramírez-Martínez, ◽  
Luis Ignacio Iñiguez-Dávalos ◽  
Duke S. Rogers
Keyword(s):  
Genetic Divergence ◽  
Phylogenetic Relationships ◽  
Sequence Data ◽  
Conservation Status ◽  
Biosphere Reserve ◽  
Genetic Distances ◽  
Species Level ◽  
Cranial Measurements ◽  
Sierra De Manantlán ◽  
Pocket Mouse

Recent collecting surveys in the Sierra de Manantlán Biosphere Reserve, Jalisco (México), uncovered the existence of a new population of the Mexican spiny pocket mouse, Heteromys irroratus.  Because the subspecies H. i. bulleri and H. i. jaliscensis occur nearby, our objective was to properly determine the taxonomic identity of the novel sample.  Also, we evaluate its distinctiveness, both in terms of genetic divergence and phylogenetic placement, relative to other members of H. irroratus.  Preliminary, we compared external and cranial measurements of recently collected individuals to those reported for representatives of the subspecies of H. irroratus occurring close by.  In addition, we examined levels of genetic differentiation and phylogenetic relationships, based on sequence data of the Cytochrome b, among this population and other members of H. irroratus, including an individual from Sierra de Juanacatlán, Jalisco, the type locality of H. i. bulleri. Phylogenetic relationships were estimated using Maximum Likelihood and Bayesian Inference methods and levels of genetic divergence were assessed employing Kimura-2-parameters genetic distances.  Samples from Sierra de Manantlán and Sierra de Juanacatlán were grouped together in a well-supported haplogroup and genetic distances between them were lower than < 1.02 %.  Our phylogenetic hypothesis shows that H. i. bulleri represents the sister group to all other samples of H. irroratus but that, genetically, is a very divergent lineage.  Distances values between H. i. bulleri to any of the other groups were > 10.05 %.  Comparison of external and cranial measurements showed that, in average, individuals from Sierra de Manantlán are larger than those of H. i. jaliscensis, but more similar in size to H. i. bulleri.  Our results show that the new population of the Mexican spiny pocket mouse from Sierra de Manantlán belongs to H. i. bulleri.  In addition, the phylogenetic separation and the high levels of genetic divergence of H. i. bulleri, relative to other members of H. irroratus, suggest that the first should be recognized as a species-level taxon.  Considering the scarce collecting records of H. i. bulleri and the known area of occurrence, that is very restricted, this taxon may warrant special conservation status.

Sign in / Sign up

Export Citation Format

Share Document