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26 results for “tail feather”
Figure. Comparison of longest primary feather, tail length, and chest circumference in male and female common snipe (* = p <0.05; **= p <0.01). Table 3. Weight of gut variables in male and female common snipe. in Revision of common snipe, Gallinago gallinago in morphometric analysis and building the standard reference haematological values for further studies
Figure. Comparison of longest primary feather, tail length, and chest circumference in male and female common snipe (* = p <0.05; **= p <0.01). Table 3. Weight of gut variables in male and female common snipe.
Figure 1 in Accumulation of chromium, cadmium and arsenic in white-tailed sea-eagle feathers ( Haliaeetus albicilla) from the Danube Delta Biosphere Reserve and surrounding (Romania)
Figure 1. Geographical distribution of sampling points for WtSe (Haliaeetus albicilla) from DDBR and the surrounding areas.
Data from: Chemical preservation of tail feathers from Anchiornis huxleyi, a theropod dinosaur from the Tiaojishan Formation (Upper Jurassic, China)
A panel of geochemical techniques is used here to investigate the taphonomy of fossil feathers preserved in association with the skeleton of the Jurassic theropod Anchiornis huxleyi. Extant buzzard feathers were analysed in parallel to test whether the soft tissues morphologically preserved in the fossil also exhibit a high degree of chemical preservation. Scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) indicate that clays and iron oxide pseudomorphs occur in the surrounding sediment and also reveal the preservation of melanosome-like microbodies in the fossil. Carbon gradient along a depth profile and co-occurrence of carbon and sulphur was shown in the fossil by elastic backscattering (EBS) and particle-induced X-ray emission (PIXE). The molecular composition of modern and fossil soft tissues was assessed from micro-Attenuated Total Reflectance Fourier Transform Infrared spectroscopy (micro-ATR FTIR), solid-state 13C nuclear magnetic resonance (13C CP-MAS NMR) and pyrolysis- gas chromatography-mass spectrometry in the presence of TMAH (TMAH-Py-GC-MS). Results show that the proteinaceous material that comprises the modern feathers is not present in the fossil feathers. The latter and the embedding sediment exhibit a highly aliphatic character. However, substantial differences could be evidenced between these samples, revealing that the organic matter of the fossil feathers is, at least partially, derived from original constituents of the feathers. The preservation of the fossil feathers, primarily expressed by the preservation of their morphology, seems to be associated with in situ polymerization of endogenous lipids. Sulphur probably played a role in the fossil preservation although no natural sulphurization took place.
FIGURE 2 in A new feather mite species of the genus Proctophyllodes Robin, 1877 (Astigmata: Proctophyllodidae) from the Long-tailed Tit Aegithalos caudatus (Passeriformes: Aegithalidae) — morphological description with DNA barcode data
FIGURE 2. Proctophyllodes valchukae sp. n., details. A—ventral view of male opisthosoma, B—leg I of male, C—Tibia and tarsus IV of male, D—spermatheca and spermaducts. Abbreviations: as—adanal fragment of opisthogastric shield, ga—genital arch, gs—genital fragment of opisthogastric shield, sa—sheath of aedeagus.
Supplementary material 1 from: Lobón-Rovira J, Conradie W, Baptista NL, Vaz Pinto P (2022) A new species of feather-tailed leaf-toed gecko, Kolekanos Heinicke, Daza, Greenbaum, Jackman, Bauer, 2014 (Squamata, Gekkonidae) from the poorly explored savannah of western Angola. ZooKeys 1127: 91-116. https://doi.org/10.3897/zookeys.1127.84942
Additional genetic material used for this work with their corresponding field numbers, catalog numbers and GenBank accession numbers
Supplementary material 3 from: Lobón-Rovira J, Conradie W, Baptista NL, Vaz Pinto P (2022) A new species of feather-tailed leaf-toed gecko, Kolekanos Heinicke, Daza, Greenbaum, Jackman, Bauer, 2014 (Squamata, Gekkonidae) from the poorly explored savannah of western Angola. ZooKeys 1127: 91-116. https://doi.org/10.3897/zookeys.1127.84942
Principal Component Analysis (PCA) loadings for each morphological variable measured in of Kolekanos spp., including standard deviation (SD), percentage of variance (% Variance) and cumulative proportion for each component.
Data from: Chemical preservation of tail feathers from Anchiornis huxleyi, a theropod dinosaur from the Tiaojishan Formation (Upper Jurassic, China)
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Data from: The evolution of sexually dimorphic tail feathers is not associated with tail skeleton dimorphism
Sexual selection can influence the evolution of sexually dimorphic exaggerated display structures. Herein, we explore whether such costly ornamental integumentary structures evolve independently or if they are correlated with phenotypic change in the associated skeletal system. In birds, elongate tail feathers have frequently evolved in males and are beneficial as intraspecific display structures but impart a locomotor/energetic cost. Using the sexually dimorphic tail feathers of several passeriform species as a model system, we test the hypothesis that taxa with sexually dimorphic tail feathers also exhibit sexual dimorphism in the caudal skeleton that supports the muscles and integument of the tail apparatus. Caudal skeletal morphology is quantified using both geometric morphometrics and linear morphometrics across four sexually dimorphic passeriform species and four closely related monomorphic species. Sexual dimorphism is assessed using permutational MANOVA. Sexual dimorphism in caudal skeletal morphology is found only in those taxa that exhibit active functional differences in tail use between males and females. Thus, dimorphism in tail feather length is not necessarily correlated with the evolution of caudal skeletal dimorphism. Sexual selection is sufficient to generate phenotypic divergence in integumentary display structures between the sexes, but these change are not reflected in the underlying caudal skeleton. This suggests that caudal feathers and bones evolve semi-independently from one another and evolve at different rates in response to different types of selective pressures.
FIGURE 1 in A new feather mite species of the genus Proctophyllodes Robin, 1877 (Astigmata: Proctophyllodidae) from the Long-tailed Tit Aegithalos caudatus (Passeriformes: Aegithalidae) — morphological description with DNA barcode data
FIGURE 1. Proctophyllodes valchukae sp. n., male. A—dorsal view, B—ventral view.
FIGURE 3 in A new feather mite species of the genus Proctophyllodes Robin, 1877 (Astigmata: Proctophyllodidae) from the Long-tailed Tit Aegithalos caudatus (Passeriformes: Aegithalidae) — morphological description with DNA barcode data
FIGURE 3. Proctophyllodes valchukae sp. n., female. A—dorsal view, B— ventral view.
Data from: A longitudinal analysis of the growth rate and mass of tail feathers in a great tit population: ontogeny, genetic effects and relationship between traits
<p class="MsoNoSpacing">Feathers have a diversity of functions in birds and are costly to produce, so their growth rate and mass can be reliable indicators of nutritional condition at the time of production. Despite the potential for feather metrics to advance our understanding of foraging, they are underused in avian ecology. One reason for this is the difficulty of interpreting whether individual variation is driven by ontogenetic, genetic, or environmental effects, which is exacerbated by the fact that most analyses have been done on cross-sectional data. We addressed this deficit using a longitudinal dataset of tail feathers collected from Great tits <em>Parus major</em> to test for ontogenetic and genetic effects on growth rate, mass and length, while controlling for body/feather size differences and other confounding factors. First, we found that the type of moult episode and experimentally-induced replacement differentially affected the length, mass and growth of feathers, providing evidence of an ontogenetic effect that should be considered when comparing these feather traits across individuals as a measure of condition. Second, we detected moderate to high repeatability and heritability values from parent-offspring regression for these three feather traits, which are suggestive of an underlying genetic component of variation. Third, we used a mean centring within-individual approach to test whether feather growth rate and feather mass (length-corrected) are indeed positively correlated with each other as overlapping indicators of body condition in birds, and found that this association, although positive, is weak and only significant between individuals. This suggests that both metrics are not so intimately linked as originally thought, and probably have different sensitivities to variation in foraging performance and ecological conditions. Together with the higher plasticity of feather growth rate compared to feather mass, our results support the idea that feather growth rate is better suited for examining short-term responses to environmental variation.</p>
Figure 7 from: Han Y-D, Mironov SV, Min G-S (2022) Two new species of feather mites (Acariformes, Astigmata) from the black-tailed godwit, Limosa limosa (Charadriiformes, Scolopacidae), in Korea. ZooKeys 1088: 81-97. https://doi.org/10.3897/zookeys.1088.80307
Figure 7 Phyllochaeta limosae sp. nov., legs A genu, tibia and tarsus I of male B genu, tibia and tarsus II of male C tibia and tarsus III of male D tibia and tarsus IV of male E tibia and tarsus III of female F tibia and tarsus IV of female.
Figure 4 from: Han Y-D, Mironov SV, Min G-S (2022) Two new species of feather mites (Acariformes, Astigmata) from the black-tailed godwit, Limosa limosa (Charadriiformes, Scolopacidae), in Korea. ZooKeys 1088: 81-97. https://doi.org/10.3897/zookeys.1088.80307
Figure 4 Alloptes species A–DAlloptes (Conuralloptes) neolimosae sp. nov. E–HA. (C.) limosae. A, E hysteronotal shield of males B, F opisthosomal lobes of males C, G opisthosomal lobes of females D, H setae h2 of males.
Figure 3 from: Han Y-D, Mironov SV, Min G-S (2022) Two new species of feather mites (Acariformes, Astigmata) from the black-tailed godwit, Limosa limosa (Charadriiformes, Scolopacidae), in Korea. ZooKeys 1088: 81-97. https://doi.org/10.3897/zookeys.1088.80307
Figure 3 Alloptes (Conuralloptes) neolimosae sp. nov., details A opisthosoma of male, dorsal view B leg I of male C leg II of male D leg III of male E tibia and tarsus IV of male F leg III of female G leg IV of female.
Supplementary material 2 from: Lobón-Rovira J, Conradie W, Baptista NL, Vaz Pinto P (2022) A new species of feather-tailed leaf-toed gecko, Kolekanos Heinicke, Daza, Greenbaum, Jackman, Bauer, 2014 (Squamata, Gekkonidae) from the poorly explored savannah of western Angola. ZooKeys 1127: 91-116. https://doi.org/10.3897/zookeys.1127.84942
Results of the analysis of morphometric differences between Kolekanos spp. and sexes
Figure 5 in Accumulation of chromium, cadmium and arsenic in white-tailed sea-eagle feathers ( Haliaeetus albicilla) from the Danube Delta Biosphere Reserve and surrounding (Romania)
Figure 5. Boxplot (median, variability and outliers can be observed) of the values observed for the three elements in the samples coming from juvenile specimens.
Figure 2 in Accumulation of chromium, cadmium and arsenic in white-tailed sea-eagle feathers ( Haliaeetus albicilla) from the Danube Delta Biosphere Reserve and surrounding (Romania)
Figure 2. Accumulation level of chromium identified in the feathers sorted by age. Average values for each sampling point are showed when there were multiple samples available.
Figure 3 in Accumulation of chromium, cadmium and arsenic in white-tailed sea-eagle feathers ( Haliaeetus albicilla) from the Danube Delta Biosphere Reserve and surrounding (Romania)
Figure 3. Accumulation level of arsenic identified in the feathers sorted by age. Average values for each sampling point are showed when there were multiple samples available.
Data from: The evolution of sexually dimorphic tail feathers is not associated with tail skeleton dimorphism
Open the record for dataset details and reuse information.
Data from: A longitudinal analysis of the growth rate and mass of tail feathers in a great tit population: ontogeny, genetic effects and relationship between traits
Open the record for dataset details and reuse information.
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