Search results for "Birds"

A multi-locus inference of the evolutionary diversification of extant flamingos (Phoenicopteridae).

2014

9 pages; International audience; BACKGROUND: Modern flamingos (Phoenicopteridae) occupy a highly specialized ecology unique among birds and represent a potentially powerful model system for informing the mechanisms by which a lineage of birds adapts and radiates. However, despite a rich fossil record and well-studied feeding morphology, molecular investigations of the evolutionary progression among modern flamingos have been limited. Here, using three mitochondrial (mtDNA) markers, we present the first DNA sequence-based study of population genetic variation in the widely distributed Chilean Flamingo and, using two mtDNA and 10 nuclear (nDNA) markers, recover the species tree and divergence…

Agro-biodiversity evaluation in Sicilian farmlands entered into agri-environment scheme agreements

2009

To test if the application of Rural Development Regulation 1257/1999 played a possible role in maintaining or increasing biodiversity, monitoring of the avifauna has been carried out in 2004-2005. On the whole, 836 point counts were carried out, 418 in spring and 418 in winter, evenly shared between 16 farmlands entered into F2 and F4 agri-environmental measures, and an equal number of “not enhanced” farmlands, which represented test-farms and control-farms, respectively. Between bird frequencies within test-farms and control-farms statistical differences have been dected; farms entered in agri-environmental measures showed, on average, higher values of species, frequency of occurrence and …

Detection of tick-borne encephalitis virus in I. ricinus ticks collected from autumn migratory birds in Latvia.

2014

Birds have a potential of spreading ticks via bird migration routes. In this study, we screened 170 ticks removed during autumn 2010 from 55 birds belonging to 10 species for the presence of tick-borne encephalitis virus (TBEV). In total, TBEV RNA was detected in 14% of I. ricinus tick samples obtained from different birds species. The results of this study indicate the possible role of migrating birds in the dispersal of TBEV-infected ticks along the southward migration route.

Brichetti P. & Fracasso G., 2018. The birds of Italy. 1. Anatidae-Alcidae. Ed. Belvedere, Latina, Historia naturae (6)

2018

Brichetti P. & Fracasso G., 2018. The birds of Italy. 1. Anatidae-Alcidae. Ed. Belvedere, Historia Naturae (6), Latina

2018

Route for political interests to weaken conservation

2009

Jūras piekrastē ligzdojošo putnu ekoloģija

1997

Advisor: Jānis Priednieks

Mazā ērgļa Aquila pomarina C.L. Brehm taksonomija, izplatība, skaits un ekoloģija Latvijā

1999

Advisor: Vīksne, Jānis

An initial comparative map of copy number variations in the goat (Capra hircus) genome

2010

Abstract Background The goat (Capra hircus) represents one of the most important farm animal species. It is reared in all continents with an estimated world population of about 800 million of animals. Despite its importance, studies on the goat genome are still in their infancy compared to those in other farm animal species. Comparative mapping between cattle and goat showed only a few rearrangements in agreement with the similarity of chromosome banding. We carried out a cross species cattle-goat array comparative genome hybridization (aCGH) experiment in order to identify copy number variations (CNVs) in the goat genome analysing animals of different breeds (Saanen, Camosciata delle Alpi,…

A taphonomic investigation of small vertebrate accumulations produced by the snowy owl (Bubo scandiacus) and its implications for fossil studies

2019

17 pages; International audience; The action of predators, such as diurnal raptors, owls, mammals or humans, influence the nature of smallvertebrate fossil assemblages but currently their taphonomic features are still poorly understood. In this study,we investigate the taphonomic signature of the snowy owl (Bubo scandiacus) based on an analysis of pelletscollected at breeding sites located in Greenland and the Canadian Arctic. This taxon is widely distributedthrough the North Hemisphere and was an important predator in Pleistocene times. Taphonomic parameterssuggest that, contrary to previous assumptions, B. scandiacus produces, on average, moderate digestion of incisors,molars and post-cra…