+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Adaptive modification of tail structure in relation to body mass and buckling in woodcreepers

, : Adaptive modification of tail structure in relation to body mass and buckling in woodcreepers. Condor ; 104(2): 281-296

We assessed the relationship between function and tail structure of woodcreepers (Dendrocolaptidae) and Neotropical ovenbirds (Furnariidae) using a comparative analysis of independent contrasts. Because woodcreepers are scansorial (they use their tail for body support), we predicted that the structure of the rectrix rachis should be reinforced both at the tip and at the base, whereas the nonscansorial Neotropical ovenbirds should lack reinforcement of the rectrix tips. For each species, we measured the length of the rachis of the medial rectrix and its diameter both at the tip and base of the feather. Rachis diameters were positively associated with body mass in both groups as expected if tail structure were a simple allometric product of body size. However, woodcreepers had larger rachis diameters for a given body mass and higher slopes in the allometric regressions than Neotropical ovenbirds. In addition, we found positive relationships between rachis width at both the tip and base of the rectrix and tail length in woodcreepers, but in Neotropical ovenbirds only rachis width at the base was associated with tail length. These results considered together are consistent with the hypothesis that the tip of the woodcreeper tail rachis is adapted to both support body mass and to prevent Euler buckling failure.


DOI: 10.1650/0010-5422(2002)104[0281:amotsi];2

Other references

Tolkoff-Rubin, N.E.; Rubin, R.H., 1988: Ciprofloxacin in management of urinary tract infection. Ciprofloxacin is a new quinolone derivative which is particularly well adapted for the treatment of bacterial urinary tract infection. Virtually all uropathogens are susceptible, and the development of resistance is uncommon. Its pharmacokinetic c...

Powder, K.E.; Albertson, R.Craig., 2016: Cichlid fishes as a model to understand normal and clinical craniofacial variation. We have made great strides towards understanding the etiology of craniofacial disorders, especially for 'simple' Mendelian traits. However, the facial skeleton is a complex trait, and the full spectrum of genetic, developmental, and envi...

Main, R.G., 1958: Molten metal burns of the lower extremities. Molten metal burns of the lower extremities treated are described and the mechanism of production, prophylaxis, and treatment are discussed.

Rodrigues, F.; Sarmento, Iês.; Tiago, P., 2015: Asymptomatic internal hernia through a defect of broad ligament: a surprising finding in a laparoscopic surgery to recover a lost levonorgestrel-releasing intrauterine system. Bmj Case Reports 2015: -

Elliott, S.P.; Metro, M.J.; McAninch, J.W., 2003: Long-term followup of the ventrally placed buccal mucosa onlay graft in bulbar urethral reconstruction. Purpose: We investigate whether the short-term success rate (greater than 90%) of buccal mucosa free grafts in the bulbar urethra is sustained in the long term. Materials and Methods: In 60 patients a ventrally placed buccal mucosa graft was used...

Kern, M.; Thompson, V.P., 1995: Durability of resin bonds to a cobalt-chromium alloy. Common nickel-chromium-beryllium alloys used for resin-bonded fixed partial dentures have possible health hazards due to leaching of nickel and beryllium. For resin-bonded restorations corrosion resistant cobalt-chromium alloys (CoCr) are a suitab...

Werle, E.; Lorenz, W., 1966: Salivary gland secretion following administration of pilocarpine, histamine and kinins. Archives Internationales de Pharmacodynamie et de Therapie 161(2): 477-488

Sowley, E.N.K.K.nkam, F.; Afari, D., 2013: Evaluation of neem Azadirachta indica seed and ginger Zingiber officinale as potential control agents of yam Dioscorea rotundata Poir tuber rot fungi. Yam is an important crop which serves as a source of income to small-holder farmers as well as a foreign exchange earner. Among the constraints faced by yam farmers are pests and diseases, especially deterioration caused by microbes during storage...

Langston, A.; Ferdinand, G.A.A.; Ruppanner, R.; Theilen, G.H.; Drlica, S.; Behymer, D., 1978: Comparison of production variables of bovine leukemia virus antibody negative and bovine leukemia virus antibody positive cows in 2 california usa dairy herds. Lactating cows from 2 closed herds of purebred dairy cattle (100 and 367 animals) were tested for antibodies to bovine leukemia virus (BLV) by the bovine leukemia-glycoprotein immunodiffusion test. Production variables necessary for analysis were...

Lecomte, F.; Siepmann, J.; Walther, M.; MacRae, R.J.; Bodmeier, R., 2004: Polymer blends used for the aqueous coating of solid dosage forms: importance of the type of plasticizer. The aim of this study was to investigate the importance of the type of plasticizer in polymer blends used for the coating of solid dosage forms, comparing a lipophilic and a hydrophilic plasticizer (dibutyl sebacate (DBS) and triethyl citrate (TEC...