Log in

Relevant bibliographies by topics / Zygodactyly

Contents

Journal articles
Book chapters

Academic literature on the topic 'Zygodactyly'

Author: Grafiati

Published: 4 June 2025

Last updated: 23 June 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Zygodactyly.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Zygodactyly"

1

Sustaita, Diego, Yuri Gloumakov, Leah R. Tsang, and Aaron M. Dollar. "Behavioral correlates of semi-zygodactyly in Ospreys (Pandion haliaetus) based on analysis of internet images." PeerJ 7 (February 5, 2019): e6243. http://dx.doi.org/10.7717/peerj.6243.

Full text

Abstract:

Ospreys are renowned for their fishing abilities, which have largely been attributed to their specialized talon morphology and semi-zygodactyly−the ability to rotate the fourth toe to accompany the first toe in opposition of toes II and III. Anecdotal observations indicate that zygodactyly in Ospreys is associated with prey capture, although to our knowledge this has not been rigorously tested. As a first pass toward understanding the functional significance of semi-zygodactyly in Ospreys, we scoured the internet for images of Osprey feet in a variety of circumstances. From these we cross-tabulated the number of times each of three toe configurations (anisodactylous, zygodactylous, and an intermediate condition between these) was associated with different grasping scenarios (e.g., grasping prey or perched), contact conditions (e.g., fish, other objects, or substrate), object sizes (relative to foot size), and grasping behaviors (e.g., using one or both feet). Our analysis confirms an association between zygodactyly and grasping behavior; the odds that an osprey exhibited zygodactyly while grasping objects in flight were 5.7 times greater than whilst perched. Furthermore, the odds of zygodactyly during single-foot grasps were 4.1 times greater when pictured grasping fish compared to other objects. These results suggest a functional association between predatory behavior and zygodactyly and has implications for the selective role of predatory performance in the evolution of zygodactyly more generally.

APA, Harvard, Vancouver, ISO, and other styles

2

Niblock, Aaron, Dominic Og McConville, and Patrick John Morrison. "Zygodactyly is strongly associated with Acute Myeloid Leukaemia." British Journal of Haematology 177, no. 4 (2016): 659–60. http://dx.doi.org/10.1111/bjh.14096.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

McConville, Dominic O., G. Pooler Archbold, Anthony Lewis, and Patrick J. Morrison. "Zygodactyly (Syndactyly Type A1) Associated With Midfoot Charcot Neuropathy and Diabetes." Diabetes Care 41, no. 5 (2018): e74-e75. http://dx.doi.org/10.2337/dc18-0011.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Necas, Petr. "Nečas, P. (2020) Chameleodactyly: New term to describe the unique arrangement of digits in chameleons (Reptilia: Chamaeleonidae). – Archaius 1 (1): 4 – 5." Archaius 1, no. 1 (2020): 4–5. https://doi.org/10.5281/zenodo.3751185.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Ksepka, Daniel T., Thomas A. Stidham, and Thomas E. Williamson. "Early Paleocene landbird supports rapid phylogenetic and morphological diversification of crown birds after the K–Pg mass extinction." Proceedings of the National Academy of Sciences 114, no. 30 (2017): 8047–52. http://dx.doi.org/10.1073/pnas.1700188114.

Full text

Abstract:

Evidence is accumulating for a rapid diversification of birds following the K–Pg extinction. Recent molecular divergence dating studies suggest that birds radiated explosively during the first few million years of the Paleocene; however, fossils from this interval remain poorly represented, hindering our understanding of morphological and ecological specialization in early neoavian birds. Here we report a small fossil bird from the Nacimiento Formation of New Mexico, constrained to 62.221–62.517 Ma. This partial skeleton represents the oldest arboreal crown group bird known. Phylogenetic analyses recoveredTsidiiyazhi abinigen. et sp. nov. as a member of the Sandcoleidae, an extinct basal clade of stem mousebirds (Coliiformes). The discovery ofTsidiiyazhipushes the minimum divergence ages of as many as nine additional major neoavian lineages into the earliest Paleocene, compressing the duration of the proposed explosive post–K–Pg radiation of modern birds into a very narrow temporal window parallel to that suggested for placental mammals. Simultaneously,Tsidiiyazhiprovides evidence for the rapid morphological (and likely ecological) diversification of crown birds. Features of the foot indicate semizygodactyly (the ability to facultatively reverse the fourth pedal digit), and the arcuate arrangement of the pedal trochleae bears a striking resemblance to the conformation in owls (Strigiformes). Inclusion of fossil taxa and branch length estimates impacts ancestral state reconstructions, revealing support for the independent evolution of semizygodactyly in Coliiformes, Leptosomiformes, and Strigiformes, none of which is closely related to extant clades exhibiting full zygodactyly.

APA, Harvard, Vancouver, ISO, and other styles

6

Mumtaz, Sara, Esra Yıldız, Karmoon Lal, Aslıhan Tolun, and Sajid Malik. "Complex postaxial polydactyly types A and B with camptodactyly, hypoplastic third toe, zygodactyly and other digit anomalies caused by a novel GLI3 mutation." European Journal of Medical Genetics 60, no. 5 (2017): 268–74. http://dx.doi.org/10.1016/j.ejmg.2017.03.004.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Botelho, João Francisco, Daniel Smith-Paredes, Daniel Nuñez-Leon, Sergio Soto-Acuña, and Alexander O. Vargas. "The developmental origin of zygodactyl feet and its possible loss in the evolution of Passeriformes." Proceedings of the Royal Society B: Biological Sciences 281, no. 1788 (2014): 20140765. http://dx.doi.org/10.1098/rspb.2014.0765.

Full text

Abstract:

The zygodactyl orientation of toes (digits II and III pointing forwards, digits I and IV pointing backwards) evolved independently in different extant bird taxa. To understand the origin of this trait in modern birds, we investigated the development of the zygodactyl foot of the budgerigar (Psittaciformes). We compared its muscular development with that of the anisodactyl quail (Galliformes) and show that while the musculus abductor digiti IV (ABDIV) becomes strongly developed at HH36 in both species, the musculus extensor brevis digiti IV (EBDIV) degenerates and almost disappears only in the budgerigar. The asymmetric action of those muscles early in the development of the budgerigar foot causes retroversion of digit IV (dIV). Paralysed budgerigar embryos do not revert dIV and are anisodactyl. Both molecular phylogenetic analysis and palaeontological information suggest that the ancestor of passerines could have been zygodactyl. We followed the development of the zebra finch (Passeriformes) foot muscles and found that in this species, both the primordia of the ABDIV and of the EBDIV fail to develop. These data suggest that loss of asymmetric forces of muscular activity exerted on dIV, caused by the absence of the ABDIV, could have resulted in secondary anisodactyly in Passeriformes.

APA, Harvard, Vancouver, ISO, and other styles

8

Mayr, Gerald. "A new family of Eocene zygodactyl birds." Senckenbergiana lethaea 78, no. 1-2 (1998): 199–209. http://dx.doi.org/10.1007/bf03042769.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Mayr, Gerald, and Nikita Zelenkov. "New specimens of zygodactylid birds from the middle Eocene of Messel, with description of a new species of Primozygodactylus." Acta Palaeontologica Polonica 54, no. 1 (2009): 15–20. https://doi.org/10.4202/app.2009.B103.

Full text

Abstract:

Mayr, Gerald, Zelenkov, Nikita (2009): New specimens of zygodactylid birds from the middle Eocene of Messel, with description of a new species of Primozygodactylus. Acta Palaeontologica Polonica 54 (1): 15-20, DOI: 10.4202/app.2009.B103, URL: http://www.bioone.org/doi/abs/10.4202/app.2009.B103

APA, Harvard, Vancouver, ISO, and other styles

10

Senthil, Pavan, Om Vishanagra, John Sparkman, Peter Smith, and Albert Manero. "Design and Assessment of Bird-Inspired 3D-Printed Models to Evaluate Grasp Mechanics." Biomimetics 9, no. 4 (2024): 195. http://dx.doi.org/10.3390/biomimetics9040195.

Full text

Abstract:

Adapting grasp-specialized biomechanical structures into current research with 3D-printed prostheses may improve robotic dexterity in grasping a wider variety of objects. Claw variations across various bird species lend biomechanical advantages for grasping motions related to perching, climbing, and hunting. Designs inspired by bird claws provide improvements beyond a human-inspired structure for specific grasping applications to offer a solution for mitigating a cause of the high rejection rate for upper-limb prostheses. This research focuses on the design and manufacturing of two robotic test devices with different toe arrangements. The first, anisodactyl (three toes at the front, one at the back), is commonly found in birds of prey such as falcons and hawks. The second, zygodactyl (two toes at the front, two at the back), is commonly found in climbing birds such as woodpeckers and parrots. The evaluation methods for these models included a qualitative variable-object grasp assessment. The results highlighted design features that suggest an improved grasp: a small and central palm, curved distal digit components, and a symmetrical digit arrangement. A quantitative grip force test demonstrated that the single digit, the anisodactyl claw, and the zygodactyl claw designs support loads up to 64.3 N, 86.1 N, and 74.1 N, respectively. These loads exceed the minimum mechanical load capabilities for prosthetic devices. The developed designs offer insights into how biomimicry can be harnessed to optimize the grasping functionality of upper-limb prostheses.

APA, Harvard, Vancouver, ISO, and other styles

More sources

Book chapters on the topic "Zygodactyly"

1

"zygodactyl, adj. & n." In Oxford English Dictionary, 3rd ed. Oxford University Press, 2023. http://dx.doi.org/10.1093/oed/3477187280.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Payne, Robert B. "Morphology." In The Cuckoos. Oxford University PressOxford, 2005. http://dx.doi.org/10.1093/oso/9780198502135.003.0004.

Full text

Abstract:

Abstract Cuckoos have a zygodactyl foot with two toes of each foot (numbers 1—the inner toe or hallux of most birds—and 4, the outermost toe) directed backward, and the other two toes (numbers 2 and 3) directed forward. Most cuckoos have a long tail. Cuckoos have 10 primaries and 10 rectrices (eight in the anis); the plumage has no aftershaft; the oil gland is naked, and in most species the nestlings have no downy feathers (Nitzsch 1867). Several other morphological features occur in cuckoos that are generally not present in other birds, and a few of these features occur only in the cuckoos. The most distinctive charactereristics are in the skeleton in details of the tarsometatarsal bone (two enclosed canals side by side in the hypotarsus, and a charac teristic shape of the accessory process or sehnenhalter on trochlea IV of the distal tarsometatarsus), and in the shape of the humerus and its deltoid crest.

APA, Harvard, Vancouver, ISO, and other styles

3

Browna, Joseph W., and David P. Mindell. "Owls (Strigiformes)." In The Timetree of Life. Oxford University PressOxford, 2009. http://dx.doi.org/10.1093/oso/9780199535033.003.0066.

Full text

Abstract:

Abstract Owls (Order Strigiformes) are grouped into two cosmopolitan families: the species-rich Strigidae (typical owls, 187 species; Fig. 1) and the relatively depauperate Tytonidae (barn owls and bay owls, 15 species). Owls are broadly characterized by adaptations to predation (strong zygodactyl feet, raptorial bill and talons, and soJ-fringed edges of some Pight feathers enabling quiet Pight) and adaptations to a predominantly nocturnal or crepuscular lifestyle (large eyes and highly developed auditory system, facilitated by feathers arranged in a distinctive “facial disc”). Here, we review the relationships and divergence times of the strigiform families. Owls form a morphologically homogeneous group that is easily distinguishable from other avian orders. Since the earliest classifications there has been no question that owls form a natural group (1). Recent studies of DNA–DNA hybridization data (1), mitochondrial (mt) (2), nuclear (2–4), and combined (2) DNA sequences, and morphology (5–7) support the monophyletic status of this large avian order. Equally supported is the division of owls into two families, Arst identified 160 years ago (8). In addition to the character data establishing monophyly of each family, karyological (9), allozyme (10), and mtDNA restriction fragment (11) data reveal a deep split between the two families.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!