Box 17-01-2184, Quito, Ecuador, Check-list of North American birds. https://doi.org/10.1017/S0959270900003063, Hogan FE, Cooke R, Burridge CP, Norman JA (2008) Optimizing the use of shed feathers for genetic analysis. On the origin of avian flight: compromise and system approaches. 2011. Plumulaceous region. Although the biplane model glided almost as well as the other models, it was structurally deficient and required an unlikely weight distribution (very heavy head) for stable gliding. Quarterly Review of Biology 50: 35-66. PubMed Many feathers have both fluffy plumulaceous regions and more structured pennaceous regions. These feathers are most numerous in terms of their numbers and mass (Wetmore 1936; Davenport et al. 2, More than 250,000 words that aren't in our free dictionary, Expanded definitions, etymologies, and usage notes. The emergence of evolutionary novelties. A negative control was also generated at this stage by exposing 25l of PCR reaction mix and no DNA template to the same PCR cycle to ensure no contamination or false amplification occurred during the primerless PCR process. [citation needed] However, even down with a fill power as low as 550 still provides reasonably good insulation. Feathered dinosaurs. When 'thingamajig' and 'thingamabob' just won't do, A simple way to keep them apart. Introduction Cretaceous age Burmese amber (sometimes referred to as Burmite) from the Hukawng Valley in Kachin Province in northeastern Myanmar has a long scientific history ( Poinar et al., 2006 ). 2004). Note the increased density of expanded nodes on Anatini and the lack of expanded nodes on some barbules in Aythyini. [12] Down may also help camouflage the eggs when the female is away from the nest, particularly as the birds often draw the feathers over their eggs before leaving. An exceptionally well-preserved theropod dinosaur from the Yixian Formation of China. 2014), all of which are key questions in conservation research. Interlocking barbules and hooklets (barbicels) give remarkable strength and cohesion to the feather vanes. Scientific American 286: 84-93. O'Connor, J., Z. Zhou, and X. Xu. Summary statistics for five microscopic feather characters measured for eighteen species of dabbling and diving ducks. Chatterjee, S., and R. J. Templin. Biotechnol Agron Soc Env 21:311, CAS 5, was from the Caribbean columbid, white-crowned pigeon (Patagioenas leucocephala), with a BLAST total score of 989 and a query coverage of 91% to Genbank sequence JJQ175689.1 (Schindel et al. Furthermore, the extensive feathering of this specimen, particularly the attachment of long pennaceous feathers to the pes (legs), sheds new light on the early evolution of feathers and demonstrates the complex distribution of skeletal and integumentary features close to the dinosaurbird transition. The maximum node width was measured on the largest node of the proximal barbules visible in the microscopic field of view at 400 magnification. 2013). Small amplicons have an increased likelihood of amplification (Broquet et al. Introduction to the Morphology, Development, and Ecology of Feathers This study of microscopic feather characters provides quantitative evidence that deeply diving species lack the density of expanded nodes that is observed in dabbling and shallow-diving ducks. I would like to thank David Appleton, Laura Hough, Rebecca Chawner, Alice McCourt and other biological sciences students for their assistance in the field. Plumulaceous Definition & Meaning - Merriam-Webster [8], The loose structure of down feathers traps air, which helps to insulate the bird against heat loss[5] and contributes to the buoyancy of waterbirds. 1998. A new feather type in a nonavian theropod and the early evolution of feathers. https://doi.org/10.1101/pdb.prot094698, Marucco F, Boitani L, Pletscher DH, Schwartz MK (2011) Bridging the gaps between non-invasive genetic sampling and population parameter estimation. 2013). In these cases, biological samples such as feathers, hair, buccal cells, faecal matter and shed skin can be collected in the field with minimal disturbance to the study species (Mills et al. When quantifying microscopic feather characters, it is imperative to always study the same feathers, and the same regions within feathers, across taxa to avoid inconsistency in data collection. found around the eye and mouth Semiplumes intermediate feather type between pennaceous and plumulaceous feathers which lack a rachis. Y.Qu, 2002; Hackett and Broadfoot 2003; Bonin et al. El componente 1 explic el 51% de la variacin y se defini con base en dos caracteres que cuantificaron el nmero de brbulas con nodos expandidos y el nmero de nodos expandidos en las brbulas. Although using half the recommended volume of elution buffer decreases the DNA yield, the aim was to increase the final concentration of DNA as it is well documented that a higher concentration of starting DNA in PCR reactions improves the likelihood of successful DNA amplification (Kishore et al. [41], Feathers found in amber in western France, Canada and northeastern China suggest that some non-avian dinosaurs may have had primitive, down-like feathers.[42][43]. Sues, H.-D. 2001. Samples that were lower than the detection range of the Invitrogen Qubit 3.0 Fluorometer were assigned the value 0.49ng/ml. A small amplicon strategy proved effective for mtDNA amplification using PCR, targeting three overlapping 314359bp regions of the cytochrome oxidase I barcoding region which, when combined, aligned with target-species reference sequences. Down forms clumps if exposed to dampness or moisture, and will mildew if left damp. plumulaceous (comparative more plumulaceous, superlative most plumulaceous) (zoology, ornithology) Downy; bearing down. This nest is live-streamed online by East Tennessee State University, and photos are used with permission. 2013; Lucena-Aguilar et al. Nature 464: 1338- 1341. The contour feathers will eventually replace the natal down completely, leaving only the thermal down underneath. The flight feathers on the wings, the remiges, are the first to begin to grow because they are the longest and take the most time to reach their full length. 2000; Rudnick et al. devices; filoplumes (hair feathers) and plumules (down feathers) are used principally as insulation, to conserve body heat. Lei, PubMedGoogle Scholar. Nature 421: 807-814. https://doi.org/10.1017/s0959270915000064, Bonin A, Bellemain E, Bronken Eidesen P et al (2004) How to track and assess genotyping errors in population genetics studies. J Am Stat Assoc 67:215216. We use cookies to ensure that we give you the best experience on our website. Basal plumulaceous. We examined downy barbs from breast feathers of eighteen species of ducks in the tribes Anatini, Aythyini, and Mergini that commonly breed in North America American Ornithologists' Union (1998). The parts of a feather are shown in Figure 2. This not only provides evidence in support of using non-invasive sampling methods for genetic analyses, in particular when applied to endangered species, but also highlights the utility of biological material kept in non-optimal conditions, may previously have been discounted (Rawlence et al. dinosaur feeding on a bird. [27] Higher fill-power downs will thus insulate better than lower fill-power downs of the same weight. Instituut voor Taxonomische Zoologische, Amsterdam. 2014). Here, we present direct and indirect evidence demonstrating that beetle larvae fed on feathers from an undetermined theropod host (avian or nonavian) 105 million y ago. 2008). 2004; Pellens and Grandcolas 2016; Chen et al. Feather samples used for this study were obtained non-invasively, as moulted feathers, and collected opportunistically from known occupied dove territory: Mount Hartman estate and Perseverance, Grenada (Rusk 2008, 2017). evidence for the dietary preferences of Microraptor and a nonavian https://doi.org/10.1007/s10336-013-0932-9, von Thaden A, Cocchiararo B, Jarausch A et al (2017) Assessing SNP genotyping of noninvasively collected wildlife samples using microfluidic arrays. The same technique was adopted using museum samples from the African horseshoe bat (Rhinolophus darlingi) to investigate the phenotypic convergence of its evolutionary history (Jacobs et al. Avian Res 6:24. https://doi.org/10.1186/s40657-015-0034-x, Debode F, Marien A, Janssen et al (2017) The influence of amplicon length on real-time PCR results. CAS University of Chicago Press, Chicago, IL. Feathers come in a huge variety of forms, each with a unique structure and function, but there are two main types: plumulaceous and pennaceous. Google Scholar, Presti FT, Meyer J, Antas PTZ et al (2013) Non-invasive genetic sampling for molecular sexing and microsatellite genotyping of hyacinth macaw (Anodorhynchus hyacinthinus). 1984, Brom 1991, Dove 1997).Further, attempts to quantify feather characters in Charadriiformes have shown evidence of generic differentiation Dove (1997), phylogenetic signal, and possible convergence in some . Each sample was used as a substrate for the amplification of the barcoding region of the cytochrome oxidase I gene using primer set AWCF1 and AWCintR2 (C1; 328bp) (Patel et al. These types of empirical investigations are necessary precursors for more speculative investigations, such as those concerning the functional significance of microscopic feather characters of birds adapted to different ecological environments (Lei et al. 2004). Species were also grouped according to tribe and plotted against the character that quantified the number of expanded nodes per barbule because this character had the highest component loading in PCA. We measured 138 individuals of 11 species of Anatini, 73 individuals of five species of Aythyini, and 30 individuals of two species of Mergini. Morphological and Histochemical Description of Quail Feather Immature feathers preserved in Burmite provide evidence of rapid Plumulaceous feathers were characterized by the formation of syncytial barbule cells. [20][21] Though it is still called by the same name, today's "marabou" (sometimes spelled "marabout"), comes from domestic turkeys, as marabou storks are protected. Powder down, or pulviplumes, is a special type of down that occurs in a few groups of apparently unrelated birds. https://doi.org/10.3102/10769986014003269, Zhou C, Ling X (2011) DNA binding and DNA extraction: methods, applications, and limitations. To save this word, you'll need to log in. Plumulaceous feathers have barbs that are loose and fluffy. Feathers derive from a complex process of morphogenesis inside embryonic feather filaments that begins with the formation of barb ridges and terminates with the formation of barbs, free in plumulaceous feathers and regularly joined to a rachis in pennaceous feathers (Lucas & Stettenheim, 1972; Chuong & Widelitz, 1999; Prum & Dyck, 2003; Sawyer . All analyses were performed in R (R Core Team 2013).The results of the test showed that samples that underwent the optimised protocol had a significantly higher extracted DNA concentration than the standard protocol (W=81, p value<0.01, Cohenss d=0.89). To assemble the longer combined sequence, each of the small amplicons were aligned using a global alignment algorithm with Emboss Explorer merger tool (Fig. In the United States, Federal Trade Commission regulations require that any product labeled "100% Down" must contain only down feathers, while products labeled simply "Down" can contain a mixture of fiber and feathers. This article about ornithology is a stub. Mol Biol Evol 28:19271942. Whether you're learning or teaching, these slides are helpful and colorful guides. basal dromaeosaurids. Downy feathers have a loosely arranged structure that helps trap air close to the bird's warm body. [24] Eiders are still "farmed" by people in Iceland, Scandinavia and Siberia. Steps in the evolution of bird feathers were likely similar to those in the evolution of feathers of non-avian theropods (Graphic source: PBS - NOVA). [15], Down feathers were used by indigenous North Americans for religious ceremonies and as powerful symbols. Thanks to Ralph Chapman and David Danze (Smithsonian Institution) for statistical advice and Marcy Heacker for literature searches. The shape and location of the expanded nodes that are distally located on the barbule are unique microscopic features that aid in identification of downy feathers in this order of birds. Plumulaceous feathers had small, thin, elongated initial barbules. Proceedings of the National Academy of Sciences USA 107: 766-768. Here we present a protocol optimised for obtaining usable genetic material from moulted plumulaceous feather samples. Their barbs have rami that are less stiff and the barbules are usually either reduced or thinner. The origin of birds. On Sunday the two eaglets (BC14 and BC15) were covered with their light gray natal down. Nova Science Publishers Inc, New York. Nature 455: 1105-1108. 2005; An et al. A heuristic approach is used to select the base with the best local sequence quality score in the case of any mismatches (Bell and Kramvis 2013). Everything You Need To Know About Feathers At the Bluff City nest in Tennessee this week (March 17-23, 2019) we are witnessing the three phases of feather development on a growing eaglet. Natal down is the layer of down feathers that cover most birds at some point in their early development. 2000). This is advantageous, particularly for research on sensitive species and ecosystems, as it minimises the level of disturbance to the wildlife and prioritises the welfare of individuals being investigated (Dai et al. However, some types of non-invasive sample collection such as buccal swabbing and hair plucking still require trapping and handling of the animal (Broquet et al. Branching off of the barbs (upper right) are barbules. [32] The precise percentage of down harvested in this manner is uncertain; while some references report that it is only a small fraction of the total (less than 1% in 2011),[31] a 2009 Swedish documentary reported that it might be as much as 5080% of the total supply, a figure supported by IKEA and an industry representative, but disputed by organizations within the industry. The birds are provided with nest sites and protected from predators, and down is collected intermittently during the nesting season without harming the nests or female ducks. An ostrich down feather is an example of a plumulaceous feather. 1998. Los no zambullidores tambin presentaron mayor densidad de nodos expandidos por brbula, nodos ms anchos, distancias ms cortas entre nodos expandidos y brbulas ms largas. [9] Pollutants can reduce the efficiency of these functions. Therefore, our improved methods of extraction and amplification of mtDNA from non-invasively collected, low quality feather samples, have the potential to extend the applicability of molecular analyses in studies aimed at the conservation of endangered bird species, for which it is typically difficult to obtain high quality samples. The pennaceous is the iconic feather of a quill pen or a birds wing. The diving ducks (Aythyini and Mergini) averaged fewer than two expanded nodes per barbule, whereas dabbling species (Anatini) averaged nearly three expanded nodes per barbule. Catherine Peters. J Appl Microbiol 89:735743. Feather topography. Las especies zambullidoras presentan menos nodos expandidos, plumaje menos flotante y fueron ms eficientes forrajeando a mayores profundidades en comparacin con los patos no zambullidores. 5b). in trees, supporting inferences that this taxon was also an https://doi.org/10.1007/s10310-005-0194-3, Shapiro SS, Francia RS (1972) An approximate analysis of variance test for normality. https://doi.org/10.1016/S0960-9822(00)00759-4, Westermeier R (2005) Electrophoresis in practice : a guide to methods and applications of DNA and protein separations. J Ornithol 154:587595. https://doi.org/10.3791/56815, Article H. F. G. Whitherby, London. In addition, products labeled as "Goose Down" must contain at least 90% goose down, 10% goose feathers. [5], Powder down, or pulviplumes, is a special type of down that occurs in a few groups of apparently unrelated birds. III and IV. DNA extraction using the optimised method resulted in a visible band on the gel at the 203bp target region of avian cyt b for 154 out of 158 (97.5%) of the feathers being used in this study (Table2) thus confirming target DNA rather than subsidiary material had been amplified. Samples were subjected to a PCR cycle with the cycling parameters: initial denaturation at 95C for 5min, 10 cycles of 95C for 30s, 55C for 30s, 72C for 60s, 35 cycles of 95C for 30s, 50C for 30s, 72C for 60s and a final extension at 72C for 5min. 1972. Nova Science Publishers Inc, New York, Rusk BL (2008) Important bird areas in the Caribbean: Grenada. Pennaceouspennaceouspen-AY-shusshaving an interlocking feather structure that creates a smooth surface, or vane feathers are stiff and mostly flat, a big difference that comes from a small alteration in structure; microscopic hooks on the barbules that interlock to form a wind and . 2013). J F Ornithol 77:136140. 2008; Hogan et al. The Primer3 output for the designed primers is provided in Online Resource 1. [2] For downsteam analyses, it is also recommended to include a sequencing error rate when using genetic data for population and phylogenetic analyses (Bonin et al. The calamus is the part of the shaft held in the feather follicle on the skin of the bird. [3] All parrots have powder down, with some species (including the mealy amazons) producing copious amounts. Primary feathers are widely used as a resourse for genetic monitoring of wild bird populations, as they often contain a blood clot located in the superior umbilicus of the feather shaft (Horvth et al. In: IUCN Red List birds. Prum, R. O., and S. Williamson. At the junction of the calamus and rachis is the plumulaceous . Reaney, Combined sequence data obtained from the three small amplicons were aligned with the corresponding COI barcoding region sequence data from a known L. wellsi specimen (unpublished dataGenbank reference sequence not yet available for this species) and P. leucocephala (accession number JQ175689.1) (Schindel et al. To prevent contamination of samples, PCR was conducted in a PCR hood where tube racks, pipettes and tubes were exposed to UV light for 20min prior to setting up the reaction (Bayard De Volo et al. It is thicker and provides better insulation than the natal down, hence is sometimes called thermal down, as it helps the eaglets begin to self-thermoregulate. You must there are over 200,000 words in our free online dictionary, but you are looking for one thats only in the Merriam-Webster Unabridged Dictionary. The diagnostic and phylogenetic significance of feather structures. https://doi.org/10.1007/s12686-019-01117-8, DOI: https://doi.org/10.1007/s12686-019-01117-8. 2015). J., Journal of Experimental Zoology 304B: 570-579. Flight feathers (remiges and rectrices) are specialized types of pennaceous feathers, adapted for high loadings and often strongly asymmetric for improved flight performance[WP]. In some species, the tips of the barbules on powder down feathers disintegrate, forming fine particles of keratin, which appear as a powder, or "feather dust", among the feathers. As a result, plumulaceous feathers cannot hold anything except a delicate, rounded form.
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