Connecting Amazonian, Cerrado, and Atlantic forest histories: Paraphyly, old divergences, and modern population dynamics in tyrant-manakins (Neopelma/Tyranneutes, Aves: Pipridae)

Publication date: Available online 12 June 2018Source: Molecular Phylogenetics and EvolutionAuthor(s): João Marcos Guimarães Capurucho, Mary V. Ashley, Camila C. Ribas, John M. BatesAbstractSeveral biogeographic hypotheses have been proposed to explain connections between Amazonian and Atlantic forest biotas. These hypotheses are related to the timing of the connections and their geographic patterns. We performed a phylogeographic investigation of Tyrant-manakins (Aves: Pipridae, Neopelma/Tyranneutes) which include species inhabiting the Amazon and Atlantic forests, as well as gallery forests of the Cerrado. Using DNA sequence data, we determined phylogenetic relationships, temporal and geographic patterns of diversification, and recent intraspecific population genetic patterns, relative to the history of these biomes. We found Neopelma to be a paraphyletic genus, as N. chrysolophum is sister to Neopelma + Tyranneutes, with an estimated divergence of approximately 18 Myrs BP, within the oldest estimated divergence times of other Amazonian and Atlantic forest avian taxa. Subsequent divergences in the group occurred from Mid Miocene to Early Pliocene and involved mainly the Amazonian species, with an expansion into and subsequent speciation in the Cerrado gallery forests by N. pallescens. We found additional structure within N. chrysocephalum and N. sulphureiventer. Analysis of recent population dynamics in N. chrysocephalum, N. sulphureiventer, and N. palle...
Source: Molecular Phylogenetics and Evolution - Category: Molecular Biology Source Type: research

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Authors: Mellouk N, Ramé C, Barbe A, Grandhaye J, Froment P, Dupont J Abstract Reproduction is a complex and essential physiological process required by all species to produce a new generation. This process involves strict hormonal regulation, depending on a connection between the hypothalamus-pituitary-gonadal axis and peripheral organs. Metabolic homeostasis influences the reproductive functions, and its alteration leads to disturbances in the reproductive functions of humans as well as animals. For a long time, adipose tissue has been recognised as an endocrine organ but its ability to secrete and release...
Source: International Journal of Endocrinology - Category: Endocrinology Tags: Int J Endocrinol Source Type: research
A white-necked Jacobin (Florisuga mellivora), photographed in Speyside, Tobago. Researchers are working to build an evolutionary tree of all bird species using cutting-edge technologies to collect DNA from across the genome. [Image 1 of 3 related images. See
Source: NSF Multimedia Gallery - Category: Science Source Type: video
In conclusion, cell proliferation appears to be restricted to the ventricular zones whereas neuronal recruitment is more widespread in the olfactory bulb, telencephalon and cerebellum. Postnatal neuronal incorporation appears to be absent in the diencephalon and mesencephalon. PMID: 30019708 [PubMed - in process]
Source: Acta Neurobiologiae Experimentalis - Category: Neurology Authors: Tags: Acta Neurobiol Exp (Wars) Source Type: research
Publication date: Available online 19 July 2018Source: The Veterinary JournalAuthor(s): Vincent BourretAbstractThis paper reviews important aspects of infection of pigs with avian influenza viruses. Wild waterfowl are the main reservoir for influenza A viruses; other species, such as pigs, can be infected, but most avian strains are imperfectly adapted to replication and transmission in such new hosts. However, some avian-to-porcine host jumps have resulted in the emergence of stable swine influenza virus lineages, with major consequences for both animal and human health. Different categories of factors are involved in the...
Source: The Veterinary Journal - Category: Veterinary Research Source Type: research
An American robin (Turdus migratorius), photographed in Washtenaw, Michigan. Researchers are working to build an evolutionary tree of all bird species using cutting-edge technologies to collect DNA from across the genome. [Image 2 of 3 related images. See
Source: NSF Multimedia Gallery - Category: Science Source Type: video
A female red-headed barbet (Eubucco bourcierii). [Image 3 of 3 related images. Back to Image 1.] More about this image Birds -- the only surviving descendants of dinosaurs -- are used to study a large range of fundamental ...This is an NSF Multimedia Gallery item.
Source: NSF Multimedia Gallery - Category: Science Source Type: video
Publication date: Available online 18 July 2018Source: Biosensors and BioelectronicsAuthor(s): Chao Liu, Juying Hou, Geoffrey I.N. Waterhouse, Lin Cui, Jing Dong, Shiyun AiAbstractA novel pH-responsive sandwich-type electrochemiluminescence immunosensor was successfully developed for the detection of avian leukosis virus subgroup J (ALV-J). The immunosensor consisted of graphene oxide functionalized with tannic acid (rGO-TA) and primary antibodies (Ab1) as the main ALV-J sensing platform. For signal amplification, pH-responsive hollow MnO2 (hMnO2) nanospheres encapsulating Ru(bpy)3Cl2 and carrying secondary antibodies (Ab2...
Source: Biosensors and Bioelectronics - Category: Biotechnology Source Type: research
Publication date: December 2018Source: Parasitology International, Volume 67, Issue 6Author(s): Aya Masuda, Toshiaki Sumiyoshi, Tadatoshi Ohtaki, Jun MatsumotoAbstractBlastocystis is an intestinal protist, commonly found in the human population and in a wide range of animals globally. Currently, isolates from mammalian and avian hosts are classified into 17 subtypes (STs) based on phylogeny of the small subunit rRNA gene (SSU rDNA), of which ten (ST1-9, 12) are reported in humans. ST10 is a major ST reported from livestock cattle. However, other STs including ST1, 3, 4, 5, and 6, which have the potential to be transmitted ...
Source: Parasitology International - Category: Parasitology Source Type: research
Ian R. Hays and Mark E. Hauber Very little is known about how morphology affects the motion, spatial stability, and resulting viability of avian eggs. The limited existing research focuses on the uniquely pyriform egg shapes found in the Alcidae bird family. This unusual shell shape was originally thought to suppress displacement and prevent egg loss on the cliffside nesting habitat of the Uria genus. Unfortunately, these early studies never isolated or quantified the specific morphological features (elongation, asymmetry, and conicality) of these pyriform eggs, which limits their applicability to other taxa and has hamper...
Source: Journal of Experimental Biology - Category: Biology Authors: Tags: RESEARCH ARTICLE Source Type: research
In this study, we generated a chimeric H7/H5 recombinant virus that expressed the entire HA1 region of the HPAI A/chicken/Guangdong/RZ/2017(H7N9) virus and the HA2 region of the HPAI A/chicken/Fujian/5/2016(H5N6) viruses. The resulting chimeric PR8-H7/H5 virus exhibited similar growth kinetics as the parental PR8-H5 and PR8-H7 viruses in vitro. The inactivated chimeric PR8-H7/H5 vaccine induced specific, cross-reactive hemagglutination inhibition antibodies against the H7 virus only but induced serum-neutralizing antibodies against both H7 and H5 viruses. Furthermore, the inactivated chimeric PR8-H7/H5 vaccine significantl...
Source: Veterinary Microbiology - Category: Veterinary Research Source Type: research
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