The role of many-to-one mapping of vertebral form to function in Psittaciform tripedal locomotion DOI Creative Commons

A Stuart,

Michael C. Granatosky, Ryan N. Felice

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Март 3, 2024

Abstract Parrots highlight the functional diversity of avian neck by contributing to a range behaviors, including arboreal locomotion. The parrot is used alongside beak and hindlimb allow them successfully navigate habitats via tripedal Whether specific morphological characteristics enable this behavior are currently unknown. By combining geometric morphometrics with phylogenetic comparative methods we investigate factors correlate shape variation in cervical vertebrae parrots. We find that phylogeny, allometry, integration, diet locomotion all have significant influence on morphology psittaciform vertebrae. However, weak, high degree morphospace overlap existing between dietary use groups. Additionally, no evidence convergence due incidence or specialization. thus conclude changes neuromuscular control neck, not adaptations, primarily responsible for argue many-to-one mapping form function allows parrots similar morphologies participate may be common feature amongst birds.

Язык: Английский

Variation in parrot jaw musculature DOI Creative Commons
Ana Carolina Lourenço Faillace,

Arin Berger,

Marcelo Ismar Silva Santana

и другие.

The Anatomical Record, Год журнала: 2025, Номер unknown

Опубликована: Апрель 7, 2025

Abstract Psittaciformes, the order encompassing parrots and their relatives, are highly diverse generally known for having a strong beaks used multiple behaviors. The muscles related to masticatory apparatus should reflect this functional complexity; however, few studies have described cranial myology across order. Through original dissections, we describe compare musculoskeleton of 27 species—the most taxonomically sample psittaciformes date. As in previous studies, found osteological differences configuration suborbital arch, zygomatic process, temporal fossa, while relatively similar order, there notable exceptions morphology m. pseudomasseter , adductor mandibulae externus pars rostralis venter portion pterygoideus ventralis lateralis . Our findings reinforce amazing anatomical diversity within group—data that can be incorporated into future biomechanics diversification Further analysis focus on (a) filling more remarkable number species especially uncommon functionally interesting taxa unavailable present study, (b) examining dietary specialization understand whether adaptive signals encoded anatomy, (c) advancing with other techniques such as DiceCT visualize relationship these 3D space able evaluate specimens non‐destructively, priority hard‐to‐dissect (e.g., small) rare) collections wish fully preserve.

Язык: Английский

Процитировано

0

Estimated and in vivo measurements of bite force demonstrate exceptionally large bite forces in parrots (Psittaciformes) DOI Creative Commons
Shannon L. Harrison, Gregory P. Sutton, Anthony Herrel

и другие.

Journal of Anatomy, Год журнала: 2024, Номер unknown

Опубликована: Сен. 24, 2024

Abstract Jaw morphology and function determine the range of dietary items that an organism can consume. Bite force is a exerted by jaw musculature applied via skeleton. has been studied in wide taxa using various methods, including direct measurement, or calculation from skulls musculature. Data for parrots (Psittaciformes), considered to have strong bites, are rare. This study calculated bite parrot species differing sizes novel method relied on forces area muscles measured situ their masses. The values were also recorded vivo transducers, allowing validation dissection‐based models. analysis investigated allometric relationships between measures body size force. Additionally, examined whether measure muscle scar could be useful proxy estimate parrots. was positively relative skull mass, with macaws having strongest date bird. Calculated not statistically different values. Muscle scars adductor attachment mandible used accurately predict These results implications how process hard food estimated other morphological characteristics

Язык: Английский

Процитировано

1

The role of many-to-one mapping of vertebral form to function in Psittaciform tripedal locomotion DOI Creative Commons

A Stuart,

Michael C. Granatosky, Ryan N. Felice

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Март 3, 2024

Abstract Parrots highlight the functional diversity of avian neck by contributing to a range behaviors, including arboreal locomotion. The parrot is used alongside beak and hindlimb allow them successfully navigate habitats via tripedal Whether specific morphological characteristics enable this behavior are currently unknown. By combining geometric morphometrics with phylogenetic comparative methods we investigate factors correlate shape variation in cervical vertebrae parrots. We find that phylogeny, allometry, integration, diet locomotion all have significant influence on morphology psittaciform vertebrae. However, weak, high degree morphospace overlap existing between dietary use groups. Additionally, no evidence convergence due incidence or specialization. thus conclude changes neuromuscular control neck, not adaptations, primarily responsible for argue many-to-one mapping form function allows parrots similar morphologies participate may be common feature amongst birds.

Язык: Английский

Процитировано

0