pocket gopher
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PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0254138
Author(s):  
Theresa A. Spradling ◽  
Alexandra C. Place ◽  
Ashley L. Campbell ◽  
James W. Demastes

Parasitic lice demonstrate an unusual array of mitochondrial genome architectures and gene arrangements. We characterized the mitochondrial genome of Geomydoecus aurei, a chewing louse (Phthiraptera: Trichodectidae) found on pocket gophers (Rodentia: Geomyidae) using reads from both Illumina and Oxford Nanopore sequencing coupled with PCR, cloning, and Sanger sequencing to verify structure and arrangement for each chromosome. The genome consisted of 12 circular mitochondrial chromosomes ranging in size from 1,318 to 2,088 nucleotides (nt). Total genome size was 19,015 nt. All 37 genes typical of metazoans (2 rRNA genes, 22 tRNA genes, and 13 protein-coding genes) were present. An average of 26% of each chromosome was composed of non-gene sequences. Within the non-gene region of each chromosome, there was a 79-nt nucleotide sequence that was identical among chromosomes and a conserved sequence with secondary structure that was always followed by a poly-T region. We hypothesize that these regions may be important in the initiation of transcription and DNA replication, respectively. The G. aurei genome shares 8 derived gene clusters with other chewing lice of mammals, but in G. aurei, genes on several chromosomes are not contiguous.


2021 ◽  
Vol 185 (2) ◽  
Author(s):  
J. T. Pynne ◽  
Elizabeth I. Parsons ◽  
L. Mike Conner ◽  
Andy Whelan ◽  
Steven B. Castleberry ◽  
...  

2021 ◽  
Vol 2 (1) ◽  
pp. 1-7
Author(s):  
Fernando A. Cervantes
Keyword(s):  

La tuza tropical (Geomys tropicalis) es un roedor de hábitos fosoriales que habita únicamente una pequeña región de la zona costera del sur de Tamaulipas, México.  Es un mamífero con características morfológicas, genéticas y ecológicas únicas que lo hace una especie relevante.  Desafortunadamente, no se estudia ni monitorea y se desconoce su existencia en la región.  Actualmente el crecimiento de las prácticas de agricultura, urbanización e industrialización de las ciudades de Altamira y Tampico han fragmentado y reducido severamente su hábitat y se considera que su población disminuye continuamente; en consecuencia, se le clasifica como especie en alto riesgo de extinción.  Estimaciones previas sobre su distribución potencial indican la existencia de áreas aledañas a su distribución original con características abióticas apropiadas para su presencia en donde puede ser protegida.  Por lo tanto, es urgente que el público en general conozca esta situación y que pobladores, autoridades, académicos y organizaciones no gubernamentales unan esfuerzos para proponer y activar acciones para su conservación.


2020 ◽  
Vol 44 (4) ◽  
pp. 756-759
Author(s):  
Brittany T. Brito ◽  
Jahshua F. Sanchez

2020 ◽  
Vol 184 (2) ◽  
Author(s):  
Mary E. Bennett ◽  
Robert A. Gitzen ◽  
L. Mike Conner ◽  
Mark D. Smith ◽  
Eric C. Soehren ◽  
...  
Keyword(s):  

2020 ◽  
Vol 385 ◽  
pp. 107841
Author(s):  
Donald A. Godfrey ◽  
Nikki L. Mikesell ◽  
Timothy G. Godfrey ◽  
James A. Kaltenbach

2019 ◽  
Vol 40 (4) ◽  
pp. 175-191
Author(s):  
James J Krakker ◽  
Linda A Krakker

Plains pocket gopher, Geomys bursarius, a grassland inhabitant, is common among the mammal taxa identified on the southeast Ozark margin at the Lepold site, 23RI59, Ripley County, Missouri. Its presence throughout the midden depth, whether an incidental inclusion or human prey, implies that a favorable habitat existed in the immediate vicinity. As radiocarbon dates indicate midden deposition began about 7500 radiocarbon years before present, grassland was a component of the local vegetation beginning in the middle Holocene, if not before.


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