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25 results for “Columba livia”
Fig. 1 in Baseline study of the morphological and genetic characteristics of Haemoproteus parasites in wild pigeons (Columba livia) from paddy fields in Thailand
Fig. 1. Haemoproteus columbae from the blood of wild pigeons (Columba livia); cytochrome b lineage HAECOL1 (a–d), COLIV03 (e–f) and COQUI05 (i–l); macrogametocytes (a–b; e–f; i–j) and microgametocytes (c–d; g–h; k–l); simple arrows: nuclei of erythrocytes; short triangle-head arrows: volutin granules; long trianglehead arrows: pigment granules; scale bar = 10 μm.
Fig. 2 in Baseline study of the morphological and genetic characteristics of Haemoproteus parasites in wild pigeons (Columba livia) from paddy fields in Thailand
Fig. 2. Haplotype network of partial cyt b sequence (479 bp) of Haemoproteus columbae from wild pigeons (Columba livia); (A) the three common haplotypes (HAECOL1, COLIV03 and COQUI05) found in this study and proportions between study sites; (B) proportions of each haplotype reported worldwide and in the two study sites; Nakhon Sawan (purple), Phitsanulok (pink), and previous reports (gray); number of sequences shown in a pie chart of the network, without number inside indicates one sequence. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)
Effects of parental experience and age on expression of prolactin, vasoactive intestinal peptide and their receptors in a biparental bird, Columba livia
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Development of limb bone laminarity in the homing pigeon (Columba livia)
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Data from: Changing flight and flocking dynamics of homing pigeons (<em>Columba livia d.</em>) over heterogeneous landscapes
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Influence of rotation speed and frequency on the decision of Columba livia domestica to cross the rotor-swept area of paper blades mimicking a wind turbine
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Use of anthropogenic landscapes in a wild Columba livia (Rock Dove) population
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Associations of genetic polymorphisms with boldness, stress response, and route efficiency in homing pigeons (<em>Columba livia</em>)
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Shortgrass Steppe site, station USGS Breeding Bird Survey Route 17305, Nunn, CO, study of animal abundance of Columba livia in units of numberPerSightingEffort on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Shortgrass Steppe (SGS) contains animal abundance of Columba livia measurements in numberPerSightingEffort units and were aggregated to a yearly timescale.
Data from: Homing pigeons (Columba livia) modulate wingbeat characteristics as a function of route familiarity
Mechanisms of avian navigation have received considerable attention, but whether different navigational strategies are accompanied by different flight characteristics is unknown. Managing energy expenditure is critical for survival, therefore understanding how flight characteristics, and hence energy allocation, potentially change with birds familiarity with a navigational task could provide key insights into the costs of orientation. We addressed this question by examining changes in wingbeat characteristics and airspeed of homing pigeons (<i>Columba livia</i>) as they learned a homing task. Twenty-one pigeons were released 20 times individually from either 3.85 km or 7.06 km from home. Birds were equipped with 5 Hz GPS trackers and 200 Hz tri-axial accelerometers. We found that, as the birds' route efficiency increased during the first six releases, their median peak-to-peak dorsal body (DB) acceleration and median DB amplitude also increased. This, in turn, led to higher airspeeds, suggesting that birds fly slower when traversing unfamiliar terrain. By contrast, after route efficiency stabilised, birds exhibited increasing wingbeat frequencies, which did not result in further increases in speed. Overall, higher wind support was also associated with lower wingbeat frequencies and with increased DB amplitude. Our study suggests that the cost of early flights from an unfamiliar location may be higher than subsequent flights both due to inefficient routes (increased distance) and lower airspeeds (increased time). Furthermore, the results indicate, for the first time, that birds modulate their wingbeat characteristics as a function of navigational knowledge, and suggest that flight characteristics may be used as "signatures" of birds' route familiarity.
Data from: Functions of innate and acquired immune system are reduced in domestic pigeons (Columba livia domestica) given a low protein diet
Racing pigeons are exposed to and act as carriers of diseases. Dietary protein requirement for their maintenance has not been determined experimentally despite their being domesticated for over 7000 years. A maintenance nitrogen (protein) requirement (MNR) for pigeons was determined in a balance study using diets containing 6, 10 and 14% crude protein (CP). Then, the effects of feeding the diets were investigated to determine whether they were adequate to sustain innate and acquired immune functions. Nitrogen intake from the 6% CP diet was sufficient to maintain nitrogen balance and body weight in pigeons. However, the immune functions of phagocytosis, oxidative burst and lymphocyte proliferation in pigeons fed this diet were reduced compared with those fed 10 and 14% CP diets. Pigeons given the 6 and 10% CP diets had lower antibody titres following inoculation against Newcastle disease (ND) than those on the 14% CP diet. A confounding factor found on autopsy was the presence of intestinal parasites in some of the pigeons given the 6 and 10% CP diets; however, none of the pigeons used to measure MNR or acquired immunity to ND were infested with parasites. In conclusion, neither the 6 nor 10% CP diets adequately sustained acquired immune function of pigeons.
Data from: Crossed effects of helminth infection and lead exposure on fitness: an experimental study in feral pigeons (Columba livia)
<p><span>Living organisms are exposed to multiple environmental factors that can affect their fitness. The effects of these simultaneous stressors can be additive or can interact in negative synergistic or antagonistic ways to affect the health of exposed individuals. Parasites can accumulate pollutants in their own tissues and have been shown to increase the tolerance of their hosts to different pollutants (antagonistic interaction between parasites and pollutants). We tested the existence of combined antagonistic effects between intestinal parasites and lead exposure on urban feral pigeons (<em>Columba livia</em>) which are known to be exposed to trace metal pollution and harbor a wide variety of internal and external parasites. </span><span>We experimentally exposed feral pigeons to two treatments: an anthelmintic treatment to eliminate intestinal nematode parasites; an exposure to lead for a period of 6 months. We tested the effects of these crossed treatments on several components of fitness: immunocompetence, reproduction, and body mass. </span><span>Our findings suggest that the overall effects of lead exposure, either alone or in combination with the presence of intestinal parasites (without </span><span>anthelmintic </span><span>treatment) were negative, through either additive or synergistic means. </span><span>In the absence of putative antagonistic effects between lead exposure and with helminths, the detoxification hypothesis could not be confirmed. </span><span>Our results reveal the existence of negative combined effects between pollutant exposure and intestinal parasites, highlighting the importance of accounting for multiple stress factors when studying the effects of exposure to pollutants and/or other environmental stressors on the fitness of organisms.</span></p>
Data from: Homing pigeons (Columba livia) modulate wingbeat characteristics as a function of route familiarity
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Data from: Functions of innate and acquired immune system are reduced in domestic pigeons (Columba livia domestica) given a low protein diet
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Differences in oxidative stress across seasons and ability to cope with environmental mismatch in muscle and brain of black-capped chickadees (Poecile atricapillus) and rock pigeons (Columba livia)
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Data from: Not just passengers: Pigeons, Columba livia, can learn homing routes while flying with a more experienced conspecific
For animals that travel in groups, the directional choices of conspecifics are potentially a rich source of information for spatial learning. In this study, we investigate how the opportunity to follow a locally experienced demonstrator affects route learning by pigeons over repeated homing flights. This test of social influences on navigation takes advantage of the individually distinctive routes that pigeons establish when trained alone. We found that pigeons learn routes just as effectively while flying with a partner as control pigeons do while flying alone. However, rather than learning the exact route of the demonstrator, the paired routes shifted over repeated flights, which suggests that the birds with less local experience also took an active role in the navigational task. The efficiency of the original routes was a key factor in how far they shifted, with less efficient routes undergoing the greatest changes. In this context, inefficient routes are unlikely to be maintained through repeated rounds of social transmission, and instead more efficient routes are achieved because of the interaction between social learning and information pooling.
Data from: Not just passengers: Pigeons, Columba livia, can learn homing routes while flying with a more experienced conspecific
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Transcriptomic analysis of hair cells from the pigeon Columba livia
GEO Series GSE100823. Columba livia. 18 samples. Type: Expression profiling by high throughput sequencing.
Comparative Transcriptome Profiling of mRNA and lncRNA of Ovaries in High and Low Egg Production Performance in Domestic Pigeons (Columba livia)
GEO Series GSE162867. Columba livia. 6 samples. Type: Expression profiling by high throughput sequencing.
Transcriptome analysis reveals the roles of long non-coding RNA and mRNA in bursa of Fabricius during pigeon (Columba livia) development
GEO Series GSE183791. Columba livia. 9 samples. Type: Expression profiling by high throughput sequencing; Non-coding RNA profiling by high throughput sequencing.
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Allen Brain Atlas
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