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5 results for “Sylvia curruca”
Curruca cabecinegra (Sylvia melanocephala)
**Ejemplar**: *Sylvia melanocephala* **Nombre común**: Curruca cabecinegra. **Descripción**: Cráneo con pico fino y alargado que permite atrapar con precisión artrópodos. Bastante generalista en cuanto a la selección de hábitats, prefiere zonas arbustivas, de matorral o de árboles frutales. **Sigla museo, colección y entidad**: VER0000634. Colección del Dpto. de Zoología (Facultad Ciencias Biológicas). MUVHN. **Técnica digitalización/modelo**: escaneado superficial 3D Einscan Pro. **Software empleado**: einscan v3.1.0.2, modo manual con plataforma giratoria, calidad media. **Autor digitalización**: Natalia Conejero-Ortega. **Cita ejemplar**: modelo 3D Colección cráneos de aves del Dpto. de Zoología. Museo Universitat de València de Historia Natural (MUVHN).  VER0000019. Ejemplar macho taxidermizado de la misma especie. Colección Histórica de Aves (MUVHN). Previo 1950 Source: Objaverse 1.0 / Sketchfab
Evolutionary patterns in Sylvia curruca complex species
<p class="BodyA">Determining the limits of species is still a major area of contention, particularly when diagnostic differentiating characters are subtle and there is a contradiction between morphological and genetic data. The Lesser Whitethroat (LWT) complex <em>Curruca</em> <em>curruca</em> represents an interesting study system to address this issue. Here, we use phylogeny-, admixture- and principal component analysis- (PCA-) based analyses on whole-genome sequence data of the parapatric LWT taxa <em>C. c. curruca, C. c. halimodendri,</em> <em>C. c. zagrossiensis</em> and <em>C. c. althaea</em> to investigate the prevalence and importance of gene flow in a geographical area where morphological evidence suggests a clinal transition between populations. The results suggest that LWT populations of the Zagros Mts <em>zagrossiensis</em> may represent a lineage historically diverged from topotypical <em>curruca</em>, the two lineages later coming into secondary contact with extensive gene flow as a result. There is no evidence of a hybrid zone or cline between <em>zagrossiensis</em> and althaea in the Zagros Mts. On the other hand, there is evidence for gene flow between <em>althaea</em> and <em>halimodendri</em>. The results also show possible evidence of admixture from other populations in the LWT complex, extralimital to the sampled area, but the nature of this needs to be evaluated based on a larger data set.</p>
Evolutionary patterns in Sylvia curruca complex species
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Data from: February precipitation in the wintering grounds of the lesser whitethroat, Sylvia curruca: is it a cue for migration onset?
Numerous studies report shifts in bird migration phenology, presumably owing to global warming. However, most studies focus on migration patterns in the Northern Hemisphere. In this study, we investigated associations between weather conditions in African wintering grounds of the lesser whitethroat, Sylvia curruca, and spring arrival time in Eilat, Israel. Using multivariate regression models, we analysed a 30-year dataset in order to examine correlations between median springtime arrival and 46 climate variables of the wintering quarters. The model obtained exhibited a highly statistical fit, involving mean precipitation in February and March with negative effects and number of wet days during November–February. February precipitation levels were also the major factor associated with the interquartile range of arrival time. Interestingly and contrary to published results, annual or seasonal precipitation showed no correlation with spring arrival time, nor did temperature. Moreover, winter in this region falls into dry season with negligible rainfall quantities. Hence, it is unlikely that precipitation effect on habitat productivity is a driving force of migration, as suggested by other studies. Instead, we propose that precipitation in February acts as a cue for the birds, indicating the approach of spring and migration time.
Data from: February precipitation in the wintering grounds of the lesser whitethroat, Sylvia curruca: is it a cue for migration onset?
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