Showing papers on "Streptopelia published in 2019"
TL;DR: In this article, the authors studied the habitat preferences at three different landscape scales of the Eurasian collared dove (Streptopelia decaocto), a bird which recently colonized the Western and Southern Europe, with the aim to corroborate their synanthropic ecology and to propose it as indicator of human-induced landscape change.
Abstract: We studied the habitat preferences at three different landscape scales of Eurasian collared dove (Streptopelia decaocto), a bird which recently colonized the Western and Southern Europe, with the aim to corroborate their synanthropic ecology and to propose it as indicator of human-induced landscape change. We carried out this study in a small circum-Sardinian island (Italy) of high conservation concern. Comparing occurrence records with random sites, we observed that sites where this species occur showed significant lower averaged values of distance from nearest buildings, from the largest town, and from the nearest paved roads. Sites of occurrence showed significantly higher values of in urban cover density when compared with random sites where the species is absent: in particular, distance from nearest building being the main predictor using a logistic regression. Predictive models highlighted as a high proportion of the island (24–42%) shows a medium-high suitability for this species. Due to the analogous landscape anthropization of many Mediterranean islands, we suggest as this species could rapidly colonize a large part of them in the next decades. Moreover, this synanthropic species could meet many of the typical criteria requested for a biological indicator of human-induced landscape changes in land use policies.
5 citations
TL;DR: The morphological features of three instars of nymphs and adults of Columbicola bacillus collected from Collard-dove Streptopelia decaocto were studied and second instar nymph can be separated from first instar due to appearance of additional seta on pterothorax.
Abstract: The morphological features of three instars of nymphs and adults of Columbicola bacillus (Ischnocera: Phthiraptera) collected from Collard-dove Streptopelia decaocto were studied. Present report furnishes Second instar nymph can be separated from first instar due to appearance of additional seta on pterothorax on seventh to eight adominal segments. Third instars can be distinguished from second instar due to appearance of pleural seta on abdominal segment seventh to ninth.
2 citations
TL;DR: Estimated ultrastructural features and histopathological impacts of 27 cestodesparasites isolated from the intestine of laughing dove (S. senegalensis) collected from Damietta Governorate.
Abstract: Birds live in open environment carry a great risk of parasitic infections. The most important of these parasites are pathogenic cestodes. In February 2016, a total of 10 laughing dove (Streptopelia senegalensis) were examined grossly and microscopically. This study estimated ultrastructural features and histopathological impacts of 27 cestodesparasites isolated from the intestine of laughing dove (S. senegalensis) collected from Damietta Governorate. Data on morphology, hosts and infection intensity of the parasites were provided. The intestine was opened longitudinally examined looking for helminthes which examined by using both light and electron microscopy for identification. Fine morphological criteria of cestodes in the present study are shown by using both light and electron microscopy. Microtriches, the surface features among cestodes comprised two basic types that actually play in the lives of cestodes and an integral role in the formation of certain "hard" structure in cestodes. At present some surface features "microtriches" are illustrated through scanning electron microscopy. Tissue samples were also taken forhistopathological examination.
1 citations
TL;DR: In the light of dearth of avian ecological data from the Kano region, motivated ornithologists, bird enthusiasts and public agencies are invited for research into avian movement patterns, and conservation measures that, it is believed, must include habitat protection.
Abstract: Birds are important natural field components, and critical to most ecosystems by supporting seeds dispersal, plant pollination and pest control amongst other functions. Data on avian diversity and feeding behavior could be used to enhance habitats and help initiate conservation strategies. Thus, to characterize the diet of local avian fauna, we selected four semi-refuge sites around Kano metropolis, where we established 22 line transects, each 900m long, spaced 150m apart. During May to October, 2017 each site was visited once a month, adding up to 132 transect-visits. Daily surveillance starts between the local hours of 6:30am to 10:30am. We also transect-surveyed tree vegetation for evaluation of the avian habitats. We recorded a total of 22 bird species belonging to 15 families, with ploceidae as the dominant, and the Laughing dove, Streptopelia senegalensis (Family: Columbidae), being the most dominant species. Over 40% of the bird species fed on insects, other arthropods and earthworms; followed in proportion by seed eaters; while only 3.7% were nectar feeders. Goodness of fit test on observed versus expected dietary item frequencies was significant (Chi-Sq=31.49; P=0.000), indicating field cafeteria habits were not random, but selective or, probably even evolutionary. The manner of food search varied amongst the species, with the Yellow-billed oxpecker, Buphagus africanus and Cattle egret, Egretta alba, expending the most continuous foraging time of 30 to 60 minutes. However, some species, e.g., Senegal coucal, Centropus senegalensis, mainly adopted the pick-and-move strategy. The Shanon- Wiener indices of diversity, H, by site, for birds was fair to moderate (1.24 to 2.53) and paralleled those for the trees. In the light of dearth of avian ecological data from the Kano region, we invite motivated ornithologists, bird enthusiasts and public agencies for research into avian movement patterns, and conservation measures that, we believe, must include habitat protection.
1 citations
01 Dec 2019
TL;DR: House sparrow, caused the most serious damage at ripening stage of considered crops, and the highest damage was occurred in most cases during the ripening stages of sorghum than that of wheat crop.
Abstract: In African countries, birds damage to cereal crops represents economic losses. Serial field trials had been conducted to study some ecological aspects associated with harmful and beneficial bird species at newly reclaimed areas in Sohag Governorate, Upper Egypt. Regarding the harmful bird species, it is clear that the house sparrow, Passer domesticus niloticus was the most prevalent species in newly reclaimed areas, throughout the different year seasons. Hooded crow, Corvus corone sardonius ranked the second followed by palm dove, Streptopelia senegalensis egyptica and rock dove, Columba livia schimpari. On the other hand, crested lark, Galerida cristata and little green bee-eater, Merops orintalis clepatra were found in a few numbers during all seasons of the year. For the beneficial bird species, the results revealed that 9 beneficial and resident bird species Black-winged kite, Elanus coeruleus; fantailed warbler, Cisticola juncidis; hoopoe, Upupa epops epops; kestrl, Falco tinnunculus;little owl, Athene noctua glaux; swallow, Hirundo rustica savignii; spur winged plover, Hoplopterus spinosus; yellow wagtail, Motacilla flava and cattle egret, Bubulcus ibis ibis. White wagtail, Motacilla alba alba and chiffchaff, Phylloscopus collybita were found abundantly only in winter and spring seasons. With respect to the loss caused by harmful birds, the results revealed that the average of birds damage to wheat and sorghum varied according to the type of habitats. The highest birds damage occurred in crops of nearby trees, while the lowest damage was in those nearby field crops. Also, the most birds damage was recorded in the first 10 meters then, it decreased gradually towards the middle of the field. In conclusion, house sparrow, caused the most serious damage at ripening stage of considered crops. The highest damage was occurred in most cases during the ripening stages of sorghum than that of wheat crop.
1 citations
DOI•
29 Dec 2019TL;DR: A simplified mapping method has been employed to quantify avian assemblages in a plot with a mosaic of built-up areas (129 ha) and semi-natural or open areas (85 ha; grass, trees, shrubs) in the Katima Mulilo town, Namibia.
Abstract: A simplified mapping method has been employed to quantify avian assemblages in a plot with a mosaic of built-up areas (129 ha) and semi-natural or open areas (85 ha; grass, trees, shrubs) in the Katima Mulilo town, Namibia. Overall, 65 breeding bird species were recorded in the study plots (51 in the built-up areas, and 50 in the ‘open’ areas). Five of them, Rock Dove Columba livia, Grey-headed Sparrow (Passer diffuses), Dark-capped Bulbul (Pycnonotus tricolor), Laughing Dove (Streptopelia senegalensis) and Blue Waxbill (Uraeginthus angolensis) were classified as dominants. The cumulative dominance was 69.9% in the built-up area and 55.6 % in the ‘open’ area. The structure of the avian community in the built-up area was unexpectedly similar to that in the ‘open’ area. Almost the same number of breeding species was recorded, and almost identical diversity and evenness indices were calculated. However, the Sorensen Similarity Index was rather low (I = 0.69). Also, the overall density of all breeding birds was much lower in ‘open’ than in the built-up area. Granivorous birds were by far the most numerous feeding guild comprising in the built-up area 68.1% and in ‘open’ area 62.2 % of all breeding birds. Also, similar between the two areas compared was the proportion of granivores (17.7% vs. 19.7%) and insectivores (11.5% vs. 13.2%). These were also similar to the proportions of the main nesting guilds. Only the guild nesting in/on buildings was much higher in built-up than in the ‘open’ area. Although species richness was not high, population densities of some species were very high in the urbanised habitat. It is recommended to protect the larger specimens of marulas and other tree species in this habitat, as they play a vital role in maintaining the high population densities.
1 citations
TL;DR: There is differences in blood parameters in collared dove pigeons according to the age advanced, and in the mature birds, there was a decrease in both heterophils, H / L ratio, total cholesterol, triglycerides and glucose when compared to immature birds.
Abstract: The study conducted to determine the effect of differences of age on hematological and biochemical values of collared dove pigeons (Streptopelia decaocto) in Mosul city, Iraq. 28 healthy collared dove of 4 different age groups (7 birds of each group) 1 month, 3month, 6 months old as immature and 12 months old as mature pigeons were collected from local areas of Mosul city during May to August 2018. Total red blood cells (TES), packed cell volume (PCV), hemoglobin concentration (Hb), differential of white blood cells, serum total protein, cholesterol, triglycerides, uric acid and glucose were determined. The results showed fluctuations in parameters with different age groups. Mature birds had a significant increase (P ≤ 0.05) in PCV, Hb, Basophils, Monocytes, Lymphocytes, total protein and uric acid compared to immature birds. In the mature birds, there was a decrease in both heterophils, H / L ratio, total cholesterol, triglycerides and glucose when compared to immature birds. The conclusion from this study there is differences in blood parameters in collared dove pigeons according to the age advanced.
26 May 2019
TL;DR: The result showed that the gap of pubic bones is highly correlated to age and most of the main morphometric data, despite the low sample number.
Abstract: In this research, our main goal was to test, if there is an effective, yet economical way to perform native sexing on Columbidae species in field conditions. Since molecular sexing is not available among field conditions, a morphometric method was aimed to be used. After morphometric measurements, autopsy was performed to determine the sex of collected birds. The novelty of the method is that we added a new measure point to improve age and sex determination. The method was tested on Eurasian Collared Doves (n=18). Our result showed that the gap of pubic bones is highly correlated to age and most of the main morphometric data, despite the low sample number.
24 Sep 2019
TL;DR: The variables that present the greatest variation among individuals have a corneal component, and are related to head length and wing length.
Abstract: Objective: To estimate the phenotypic variation of six external somatic variables (head length, beak, culmen, tarsal-metatarsal, wing and tail) in Eurasian Collared Dove.
Design/methodology/approach: Head, beak, culmen, tarsal-metatarsal, wing and tail lengths were measured in Eurasian Collared Dove (n = 40). Kruskal-Wallis non-parametric analysis (z ? 1.96) and Guillaumin profiles were used to determine the influence of sex on each variable. The principal component analysis determined the degree of influence of each variable on the phenotypic variation of each variable.
Results: The size of the structures analyzed were different between males and females. The tarsal-metatarsal, head and wing length were structures whose coefficient of variation was lower in both sexes (P ? 0.05). The principal component analysis explained from three components, 72.77% of the morphological variation.
Limitations on study/implications: In the literature review, little information was found describing the morphological variation of birds (Streptopelia decaocto) in colonized and non-colonized environments.
Findings/conclusions: The variables that present the greatest variation among individuals have a corneal component.
TL;DR: Scientists have decoded the genetic map of the rock pigeons head crests and discovered 1.1 billion base pair and 17,300 genes in Rock Pigeon, one of the most beautiful members of the crested pigeon family.
Abstract: Scientists have decoded the genetic map of the rock pigeons head crests. There are about 350 breeds of rock pigeons in the world with different sizes, shapes, colors, beaks, vocalizations, and arrangements of feathers. Depending on shape the head crests are called hood, shell, peak, and rose. Moreover, more than 80 of the 350 pigeons have head crests which play an attracting role for mating behavior. The biologists discovered 1.1 billion base pair and 17,300 genes in Rock Pigeon. In 1941, Levi3 in his book ‘The Pigeon’ mentioned various head and legfeathers of fancy pigeons. Western Crowned Pigeon (Goura cristata) has imported in Chittagong, Bangladesh in 2003. In Bangladesh though this is few but for higher price squabs are sold by huge amount of money. Both sexes are almost similar but males are often larger than females.4 It is one of the largest and is considered one of the most beautiful members of the crested pigeon family. Due to habitat loss, limited range, and overhunting this is now vulnerable according IUCN red list of threatened species.5 In Bangladesh 29 fancy pigeons have crest6 and recently found crest in Barbary Dove in captivity. Due to artificial selection in pigeons this incidents are very common but in dove for late domestication this is not common. But in future for the development of cage birds breeding it will happen enormously.