scholarly journals Mitochondrial DNA variation analysis suggests extreme low genetic diversity in Guizhou snub-nosed monkeys (Rhinopithecus brelichi)

2011 ◽  
Vol 56 (24) ◽  
pp. 2541-2544 ◽  
Author(s):  
HuiJuan Pan ◽  
FangLei Shi ◽  
ZongFei Chang ◽  
ZuoFu Xiang ◽  
TingTing Sun ◽  
...  
Insects ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 641
Author(s):  
Julio Chávez-Galarza ◽  
Ruth López-Montañez ◽  
Alejandra Jiménez ◽  
Rubén Ferro-Mauricio ◽  
Juan Oré ◽  
...  

Mitochondrial DNA variations of Peruvian honey bee populations were surveyed by using the tRNAleu-cox2 intergenic region. Only two studies have characterized these populations, indicating the presence of Africanized honey bee colonies in different regions of Peru and varied levels of Africanization, but the current status of its genetic diversity is unknown. A total of 512 honey bee colonies were sampled from three regions to characterize them. Our results revealed the presence of European and African haplotypes: the African haplotypes identified belong to sub-lineage AI (13) and sub-lineage AIII (03), and the European haplotypes to lineages C (06) and M (02). Of 24 haplotypes identified, 15 new sequences are reported here (11 sub-lineage AI, 2 sub-lineage AIII, and 2 lineage M). Peruvian honey bee populations presented a higher proportion from African than European haplotypes. High proportions of African haplotype were reported for Piura and Junín, unlike Lima, which showed more European haplotypes from lineage C. Few colonies belonging to lineage M would represent accidental purchase or traces of the introduction into Peru in the 19th century.


2018 ◽  
Vol 62 (2) ◽  
pp. 223-232
Author(s):  
Dylan Cleary ◽  
Allen L. Szalanski ◽  
Clinton Trammel ◽  
Mary-Kate Williams ◽  
Amber Tripodi ◽  
...  

Abstract A study was conducted on the mitochondrial DNA genetic diversity of feral colonies and swarms of Apis mellifera from ten counties in Utah by sequencing the intergenic region of the cytochrome oxidase (COI-COII) gene region. A total of 20 haplotypes were found from 174 honey bee colony samples collected from 2008 to 2017. Samples belonged to the A (African) (48%); C (Eastern Europe) (43%); M (Western Europe) (4%); and O (Oriental) lineages (5%). Ten African A lineage haplotypes were observed with two unique to Utah among A lineage haplotypes recorded in the US. Haplotypes belonging to the A lineage were observed from six Utah counties located in the southern portion of the State, from elevations as high as 1357 m. All five C lineage haplotypes that were found have been observed from queen breeders in the US. Three haplotypes of the M lineage (n=7) and two of the O lineage (n=9) were also observed. This study provides evidence that honey bees of African descent are both common and diverse in wild populations of honey bees in southern Utah. The high levels of genetic diversity of A lineage honey bee colonies in Utah provide evidence that the lineage may have been established in Utah before the introduction of A lineage honey bees from Brazil to Texas in 1990.


2014 ◽  
Vol 79 (4) ◽  
pp. 277-282 ◽  
Author(s):  
Mihajla Djan ◽  
Vladimir Maletić ◽  
Igor Trbojević ◽  
Dunja Popović ◽  
Nevena Veličković ◽  
...  

2020 ◽  
Vol 73 (5) ◽  
pp. 498-500
Author(s):  
Vivek Kumar Nayak ◽  
Prajwalita Pathak ◽  
Anupama Mukherjee

Mitochondrion ◽  
2014 ◽  
Vol 16 ◽  
pp. 73-82 ◽  
Author(s):  
Shama Prasada Kabekkodu ◽  
Samatha Bhat ◽  
Roshan Mascarenhas ◽  
Sandeep Mallya ◽  
Manoj Bhat ◽  
...  

2017 ◽  
Vol 2017 ◽  
pp. 1-6
Author(s):  
Elijah K. Githui ◽  
David N. Thuo ◽  
Joshua O. Amimo ◽  
Nyamu M. Njagi ◽  
Maryanne M. Gitari

Black rhinoceros (Diceros bicornis) are highly endangered due to poaching and other anthropological reasons and their protection to rebound the numbers and genetic improvement are necessary remedial measures defined by Rhino International Union of Conservation for the Nature Red List (IUCN). In Kenya black rhino numbers declined from approximately 20,000 in the 1970s to fewer than 400 in 1982. Wildlife conservation managers effected strategies to manage/breed the remaining rhinoceros populations in Eastern and Southern Africa within regional sanctuaries. This study analyzes the genetic variability of these remnant rhinoceros using Mitochondrial DNA (mtDNA). Majority of the rhinoceros in both Kenyan and Southern Africa group are monophyletic clusters with insignificant genetic variations while some lineages are underrepresented. The Eastern Africa rhinoceros forms a distinct clade from the Sothern Africa counterpart while Tanzania population has admixtures. Tajima-D test showed that these two populations are under different selection pressure possibly due to different history of adverse anthropologic activities. Similarly, the Southern Africa rhinoceros have low genetic diversity compared to the Eastern African population due to extended periods of game hunting during Africa colonization. This study suggests that managed translocations of individual rhinoceros across the separated fragments can be applied to improve their genetic diversity.


2013 ◽  
Vol 28 (2) ◽  
pp. 157-168 ◽  
Author(s):  
V. L. LOW ◽  
P. E. LIM ◽  
C. D. CHEN ◽  
Y. A. L. LIM ◽  
T. K. TAN ◽  
...  

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