Buscar
Mostrando ítems 91-100 de 164
Phylogeography and genetic structure of two Patagonian shag species (Aves: Phalacrocoracidae)
(Academic Press Inc Elsevier Science, 2014-01)
We compared the phylogeographic and genetic structure of two sympatric shag species, Phalacrocorax magellanicus (rock shag) and Phalacrocorax atriceps (imperial shag), from Patagonia (southern South America). We used ...
Ancestry analysis of locally adapted crespa goats from southernmost Brazil
(2016)
Crespa goats are phenotypically similar to the Angora breed, and are traditionally reared in small, low-tech farms in southernmost Brazil. Whether they represent degenerated remnants of pure Angora goats or result from ...
Evolutionary units delimitation and continental multilocus phylogeny of the hyperdiverse catfish genus Hypostomus
(Academic Press Inc Elsevier Science, 2020-04)
With 149 currently recognized species, Hypostomus is one of the most species-rich catfish genera in the world, widely distributed over most of the Neotropical region. To clarify the evolutionary history of this genus, we ...
Amblyomma cajennense (Fabricius, 1787) (Acari: Ixodidae), the Cayenne tick: phylogeography and evidence for allopatric speciation
(BioMed Central, 2013-12)
Background: Amblyomma cajennense F. is one of the best known and studied ticks in the New World because of its very wide distribution, its economical importance as pest of domestic ungulates, and its association with a ...
A new argasid tick species (Acari: Argasidae) associated with the rock cavy, Kerodon rupestris Wied-Neuwied (Rodentia: Caviidae), in a semiarid region of Brazil
(BioMed Central, 2016)
Background: The rock cavy Kerodon rupestris (Wied-Neuwied, 1820) is a rodent species endemic to northeastern
Brazil. Earlier studies have associated the argasid tick Ornithodoros talaje (Guérin-Méneville, 1849) with rocky ...
Amblyomma cajennense (Fabricius, 1787) (Acari: Ixodidae), the Cayenne tick: phylogeography and evidence for allopatric speciation
(2013-12)
Background: Amblyomma cajennense F. is one of the best known and studied ticks in the New World because of its very wide distribution, its economical importance as pest of domestic ungulates, and its association with a ...
17β-estradiol abrogates apoptosis in murine skeletal muscle cells through estrogen receptors: Role of the phosphatidylinositol 3-kinase/Akt pathway
(BioScientifica, 2008-02)
Estrogens can regulate apoptosis in various cellular systems. The present study shows that 17β-estradiol (E2), at physiological concentrations, abrogates DNA damage, poly (ADP-ribose) polymerase cleavage, and mitochondrial ...
Effectiveness of ZnPc and of an amine derivative to inactivate Glioblastoma cells by Photodynamic Therapy: An in vitro comparative study
(Nature Publishing Group, 2019-12)
Glioblastoma multiforme is considered to be one of the most aggressive types of tumors of the central nervous system, with a poor prognosis and short survival periods of ~ one year. The current protocol for glioblastoma ...
A new species of Ornithodoros (Acari: Argasidae) from desert areas of northern Chile
(2016-07)
Ornithodoros atacamensis n. sp. is described from larvae collected on the lizard Liolaemus bisignatus and from free-living adults collected in desert areas from the Pan de Azúcar and Llanos de Challe National Parks, in ...
Genetic diversity and conservation status of managed vicuña (Vicugna vicugna) populations in Argentina
(2016-02)
The vicuña (Vicugna vicugna) was indiscriminately hunted for more than 400 years and, by the end of 1960s, it was seriously endangered. At that time, a captive breeding program was initiated in Argentina by the National ...