Results 121 to 130 of about 3,119 (211)

Assessing Host-Virus Codivergence for Close Relatives of Merkel Cell Polyomavirus Infecting African Great Apes [PDF]

open access: yes, 2016
It has long been hypothesized that polyomaviruses (PyV; family Polyomaviridae) codiverged with their animal hosts. In contrast, recent analyses suggested that codivergence may only marginally influence the evolution of PyV.
Akonkwa, DBM   +27 more
core   +2 more sources

Biogeographic history and cryptic diversity of saxicolous Tropiduridae lizards endemic to the semiarid Caatinga [PDF]

open access: yes, 2015
Background: Phylogeographic research has advanced in South America, with increasing efforts on taxa from the dry diagonal biomes. However, the diversification of endemic fauna from the semiarid Caatinga biome in northeastern Brazil is still poorly known.
Geurgas, Silvia R.   +3 more
core   +1 more source

Species delimitation and DNA barcoding of Atlantic Ensis (Bivalvia, Pharidae) [PDF]

open access: yes, 2013
[Abstract] Ensis Schumacher, 1817 razor shells occur at both sides of the Atlantic and along the Pacific coasts of tropical west America, Peru, and Chile. Many of them are marketed in various regions.
Cuperus, Joël   +6 more
core   +2 more sources

Is Namalycastis abiuma (Grube, 1871) (Annelida: Nereididae) restricted to its type-locality? Evidence from morphological and molecular data

open access: yesOcean and Coastal Research
Namalycastis abiuma has been recorded as a worldwide distributed species, found in most tropical and subtropical mangroves and estuarine environments. However, this status has been questioned in several publications, which indicate that several distinct
Paulo Ricardo Alves   +3 more
doaj   +2 more sources

Mycobacterium avium subspecies paratuberculosis:human exposure through environmental and domestic aerosols [PDF]

open access: yes, 2014
Mycobacterium avium subspecies paratuberculosis (Map) causes Johne’s disease in animals and is significantly associated with Crohn’s disease (CD) in humans. Our previous studies have shown Map to be present in U.K.
Hermon-Taylor, John   +5 more
core   +4 more sources

DNA barcoding of marine rocky reef fishes from northern Peru suggests a parapatric speciation in the Tropical Eastern Pacific

open access: yesEcology and Evolution
Northern Peru marks the end of an extensive coastal marine region: The Panama province, which is characterized by predominantly tropical and equatorial features and is home to the only rocky reefs known in Peruvian territory.
E. Zavala   +3 more
semanticscholar   +1 more source

Multiple global radiations in tadpole shrimps challenge the concept of ‘living fossils’ [PDF]

open access: yes, 2013
‘Living fossils’, a phrase first coined by Darwin, are defined as species with limited recent diversification and high morphological stasis over long periods of evolutionary time.
Avise   +53 more
core   +3 more sources

Three new species of the spider genus Naphrys Edwards (Araneae, Salticidae) under morphology and molecular data with notes in the distribution of Naphrys acerba (Peckham & Peckham) from Mexico

open access: yesPeerJ
Herein, we describe three new species of the spider genus Naphrys Edwards, 2003 from Mexico: Naphrys echeri sp. nov., Naphrys tecoxquin sp. nov., and Naphrys tuuca sp. nov.
Juan Maldonado-Carrizales   +3 more
semanticscholar   +1 more source

At least some protist species are not ubiquitous [PDF]

open access: yes, 2013
Body size is one of the main regulators of the ecological characteristics of living organisms, including their biogeography. The \u27ubiquity hypothesis\u27 for microorganisms states that they are widely distributed, if not cosmopolitan, due to their ...
Fontaneto, Diego, Hortal, Joaquin
core   +2 more sources

The causes of insect endemicity with the example of Madagascar

open access: yes, 2010
Biodiversity is disappearing at an exceptional rate, engendering a considerable effort of the scientific community to conserve the rarest and most threatened species.
Isambert, Benjamin, Isambert, Benjamin
core   +1 more source

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