The Network Ontogeny of the Parrot: Altriciality, Dynamic Skeletal Assemblages, and the Avian Body Plan

Carril, Julieta; Tambussi, Claudia Patricia; Rasskin‐Gutman, Diego

doi:10.1007/s11692-020-09522-w

Cited by 7 publications

(11 citation statements)

References 28 publications

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“…At last, fusion appears in the facial region, zygomatic arch, skull roof and around the splenial. Similar patterns have been previously documented for Dromaius novaehollandiae (Palaeognathae), Gallus gallus (Galloanserae), Aptenodytes forsteri, Macronectes giganteus (both Aequorlitornithes) and Myiopsitta monachus (Inopinaves) (Jollie, 1957;Bailleul et al, 2016;Sosa and Hospitaleche, 2018;Piro and Hospitaleche, 2019;Carril et al, 2020), indicating a highly constrained development among birds. Based on this comparison, we see a common fusion trend from posterior to anterior and from ventral to dorsal.…”

Section: Ontogenetic Changes Of Sutural Characterssupporting

confidence: 83%

“…As adult birds show in general an extreme degree of bone fusion in the skull (Jollie, 1957;Plateau and Foth, 2020), the process of sutural closure may provide another potential proxy for the identification of postnatal ontogenetic stages (Rager et al, 2013;Bailleul et al, 2016). Several case studies already described patterns of sutural closure in a handful of birds, e.g., Gallus gallus (Jollie, 1957), Macronectes giganteus (Piro and Hospitaleche, 2019), Aptenodytes forsteri (Sosa and Hospitaleche, 2018), Casuarius casuarius (Green and Gignac, 2020), Myiopsitta monachus (Carril et al, 2020), and Dromaius novaehollandiae (Bailleul et al, 2016). According to Bailleul et al (2016), the progressive nature of the sutural closure, allows identifying different ontogenetic stages.…”

Section: Introductionmentioning

confidence: 99%

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Common Patterns of Skull Bone Fusion and Their Potential to Discriminate Different Ontogenetic Stages in Extant Birds

Plateau

Foth

2021

Front. Ecol. Evol.

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The degree of sutural closure between bones generally allows for the classification of skeleton maturity in tetrapods. In mammals, the sutural closure of skull bones was previously used as proxy to evaluate the ontogenetic stage of single individuals. However, due to temporal variation, this process can be only applied among mammalian subclades, but not for all mammals in general. In contrast, the process of sutural closures in bird skulls could be a more reliable ontogenetic proxy for this clade as adult birds commonly show a generally high degree of bone fusion. To test this, we studied the process of sutural closure in ontogenetic series of 18 extant bird species regarding the presence of an ontogenetic signal and compared the results with changes in skull size and proportions. Univariate analyses indicate that bone fusion happens faster in altricial than in precocial birds. However, the use of PCoA and multivariate regressions reveal that the skull bone fusion follows a common pattern among birds and thus can be used as proxy to identify different ontogenetic stages. In general, the process of sutural closure spreads from posterior to anterior and from ventral to dorsal. In contrast, skull measurements reflect rather interspecific allometry than ontogeny. The used of bone fusion as proxy will help to better identify and compare different stages of maturation in birds, including historical material from osteological collections.

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Section: Ontogenetic Changes Of Sutural Characterssupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Common Patterns of Skull Bone Fusion and Their Potential to Discriminate Different Ontogenetic Stages in Extant Birds

Plateau

Foth

2021

Front. Ecol. Evol.

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“…The mandible and the neurocranium are the nodes with the highest connectivity degree in all birds (the highest number of edges). Previous authors (Carril et al, 2020; Rasskin-Gutman & Esteve-Altava, 2018) suggested that highly connected nodes will have deeper interdependence on each other and therefore greater phylogenetic constrain, that is, they will have a higher Burden rank.…”

Section: Discussionmentioning

confidence: 96%

Redefining the simplicity of the craniomandibular complex of nightjars: The case of Systellura longirostris (Aves: Caprimulgidae) by means of anatomical network analysis

Mendoza

Carril

Degrange

et al. 2022

Journal of Morphology

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To study morphological evolution, it is necessary to combine information from multiple intersecting research fields. Here, we report on the structure of the bony and muscular elements of the craniomandibular complex of birds, highlighting its morphological architecture and complexity (or simplification) in the context of anatomical networks of the Band‐winged Nightjar Systellura longirostris (Caprimulgiformes, Caprimulgidae). This species has skull osteology and jaw myology that departs from the general structural plan of the craniomandibular complex of Neornithes and is considered morphologically simple. Our goal is to test if its simplification is also reflected in its anatomical network, particularly in those parameters that measure complexity and to explore if the distribution of the networks in a phylomorphospace is conditioned by their evolutionary history or by convergence. Our results show that S. longirostris clusters with other Strisores and momotids and is segregated from the other bird species analyzed when plotted in the phylomorphospace, as a consequence of convergence in the network parameters. Systellura has a craniomandibular complex consisting of fewer muscles connecting more bones than the model species (e.g., the rock pigeon or the guira cuckoo). In this sense, Systellura is actually more complex regarding the number of integrative bony parts, while its craniomandibular complex is simpler. According to its anatomical network, Systellura also can be interpreted as less complex, particularly compared with other Strisores and taxa that reflect the general structure of the craniomandibular complex in Neornithes.

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“…Precocial and semi-precocial birds may have, through selection, exapted and exaggerated this pre-existing characteristic to facilitate the chicks' lifestyle, but the data presented here suggest this difference in maturity may initially (and in other developmental modes) represent a non-adaptive trait. Alternatively, as suggested by Carril, Tambussi & Rasskin-Gutman (2021), this may in fact be adaptive in even altricial chicks contingent upon the degree of in-nest locomotion that they exhibit. In either case, it is notable that a growing body of histological studies of Mesozoic birds and non-avialan theropods hints that a greater functional maturity of the hindlimb relative to the forelimb may have evolutionary origins even deeper than crown group birds (e.g., Prondvai et al, 2018).…”

Section: Developmental Mode and Onset Of Bone Growthmentioning

confidence: 98%

“…These differences in cortical thickness may not be a functional adaptation at all, instead representing a phylogenetic constraint as implied by how common this trait is in the diverse array of birds sampled in this study. On the other hand, Carril, Tambussi & Rasskin-Gutman, 2021 purport that the early ossification of the pelvic limb relative to the pectoral limb in altricial monk parakeet chicks is adaptive because chicks engage in moderate walking movements while still in the nest and before fledging (Aramburú, 1997). If such behavior is also present in other altricial chicks, this would potentially account for the patterns of bone maturity observed here.…”

Section: Developmental Mode and Onset Of Bone Growthmentioning

confidence: 99%

A histological survey of avian post-natal skeletal ontogeny

Atterholt

Woodward

2021

PeerJ

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Bone histology of crown-group birds is a research topic of great interest, permitting insight into the evolution of remarkably high growth rates in this clade and variation across the altricial-precocial spectrum. In this study, we describe microanatomical characteristics of the humerus and femur in partial growth series from 14 crown group birds representing ten major clades (Struthioniformes, Galliformes, Apodiformes, Columbiformes, Charadriiformes, Accipitriformes, Strigiformes, Psittaciformes, Falconiformes, and Passeriformes). Our goals were to: (1) describe the microanatomy of each individual; (2) make inter-and intra-taxonomic comparisons; (3) assess patterns that correspond with developmental mode; and (4) to further parse out phylogenetic, developmental, and functional constraints on avian osteological development. Across taxa, the femoral and humeral tissue of neonates can be broadly characterized as highly-vascularized, disorganized woven bone with great variation in cortical thickness (inter-and intrataxonomically, within an individual specimen, and within a single section). The tissue of precocial chicks is relatively more mature at hatching than in altricial, but other categories along the developmental spectrum were less easy to distinguish, thus we were unable to identify a definitive histological proxy for developmental mode. We did not find evidence to support hypotheses that precocial chicks exclusively have thicker cortices and more mature bone in the femur than the humerus at time of hatching; instead, this is a characteristic of nearly all taxa (regardless of developmental mode), suggesting deep evolutionary origins and the effects of developmental channeling. Bone tissue in adults exhibited unexpected variation, corresponding to differences in body size. Large-bodied birds have cortices of fibrolamellar bone, but organization of tissue increases and vascularity decreases with diminishing body size. The outer circumferential layer (OCL) also appears at earlier growth stages in small-bodied taxa. Thus, while the OCL is indicative of a cessation of appositional growth it is not always indicative of cortical maturity (that is, maximum organization of bony tissue for a given taxon). Small size is achieved by truncating the period of fast growth; manipulation of the timing of offset of bone growth is therefore an important factor in changing growth trajectories to alter adult body size.

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The Network Ontogeny of the Parrot: Altriciality, Dynamic Skeletal Assemblages, and the Avian Body Plan

Cited by 7 publications

References 28 publications

Common Patterns of Skull Bone Fusion and Their Potential to Discriminate Different Ontogenetic Stages in Extant Birds

Common Patterns of Skull Bone Fusion and Their Potential to Discriminate Different Ontogenetic Stages in Extant Birds

Redefining the simplicity of the craniomandibular complex of nightjars: The case of Systellura longirostris (Aves: Caprimulgidae) by means of anatomical network analysis

A histological survey of avian post-natal skeletal ontogeny

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