High ecomorphological diversity among Early Cretaceous frogs from a large subtropical wetland of Iberia

Gómez, Raúl O.; Lires, Andres I.

doi:10.1016/j.crpv.2019.07.005

Cited by 16 publications

(20 citation statements)

References 68 publications

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“…Instead of being optimized for a high locomotor performance, the pectoral girdle of aquatic anuran species might be adapted to other ecologically relevant tasks like suction feeding (Cundall, Fernandez, & Irish, 2017). The morphological adaptation to swimming might have primarily occurred in other anatomical traits (Gómez & Lires, 2019; Laurent, 1964; Moen, 2019; Videler & Jorna, 1985).…”

Section: Discussionmentioning

confidence: 99%

“…In addition, previously recognized morphological adaptations to swimming involved specific relative limb proportions (Gómez & Lires, 2019) and extensive foot webbing (Laurent, 1964). Additionally, the relative muscle mass of the hind limbs in frequently swimming species was higher if compared to other species (Moen, 2019).…”

Section: Introductionmentioning

confidence: 97%

“…High jumping performance, for instance, was generally associated with relatively short forelimbs (Zug, 1972), comparably long hind limbs (e.g., Astley, 2016; Emerson, 1978) with tibiofibulae being longer than the femora (Gómez & Lires, 2019), larger hind limb muscles (e.g., Astley, 2016), and specific physiological muscle properties (e.g., Astley, 2016; Chadwell, Hartwell, & Peters, 2002). The difference in the length of the hind limbs compared to the forelimbs was less pronounced in primary walking species (Reynaga, Astley, & Azizi, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Finally, the body of burrowing species was generally observed to be globular (Dutta & Pradhan, 1985; Laurent, 1964) with relatively shorter and stronger limbs (Laurent, 1964; Moen, 2019) and a short tibiofibula relative to the femur (Enriquez‐Urzelai, Montori, Llorente, & Kaliontzopoulou, 2015; Gómez & Lires, 2019). Most backward burrowing species had enlarged metatarsal tubercles (Kley & Kearney, 2006; Moen et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Ecomorphology of the pectoral girdle in anurans (Amphibia, Anura): Shape diversity and biomechanical considerations

Engelkes

Kath

Kleinteich³

et al. 2020

Ecology and Evolution

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Frogs and toads (Lissamphibia: Anura) show a diversity of locomotor modes that allow them to inhabit a wide range of habitats. The different locomotor modes are likely to be linked to anatomical specializations of the skeleton within the typical frog Bauplan. While such anatomical adaptations of the hind limbs and the pelvic girdle are comparably well understood, the pectoral girdle received much less attention in the past. We tested for locomotor‐mode‐related shape differences in the pectoral girdle bones of 64 anuran species by means of micro‐computed‐tomography‐based geometric morphometrics. The pectoral girdles of selected species were analyzed with regard to the effects of shape differences on muscle moment arms across the shoulder joint and stress dissipation within the coracoid. Phylogenetic relationships, size, and locomotor behavior have an effect on the shape of the pectoral girdle in anurans, but there are differences in the relative impact of these factors between the bones of this skeletal unit. Remarkable shape diversity has been observed within locomotor groups indicating many‐to‐one mapping of form onto function. Significant shape differences have mainly been related to the overall pectoral girdle geometry and the shape of the coracoid. Most prominent shape differences have been found between burrowing and nonburrowing species with headfirst and backward burrowing species significantly differing from one another and from the other locomotor groups. The pectoral girdle shapes of burrowing species have generally larger moment arms for (simulated) humerus retractor muscles across the shoulder joint, which might be an adaptation to the burrowing behavior. The mechanisms of how the moment arms were enlarged differed between species and were associated with differences in the reaction of the coracoid to simulated loading by physiologically relevant forces.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ecomorphology of the pectoral girdle in anurans (Amphibia, Anura): Shape diversity and biomechanical considerations

Engelkes

Kath

Kleinteich³

et al. 2020

Ecology and Evolution

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“…Node ages were extracted from molecular time‐estimates of Sun et al (2017). The length of the branch leading to Presbyornis was derived directly from the youngest possible age of its first appearance in the fossil record following the numerical ages of and assigning internodes a minimum time interval (1 Myr herein) following previous approaches (Angielczyk & Schmitz, 2014; Gómez & Lires, 2019; Marjanović & Laurin, 2007). Similarly, when there is no data regarding divergence times of extant taxa, we also applied the same minimum time interval (1 Myr) for internodes.…”

Section: Methodsmentioning

confidence: 99%

The lacrimal/ectethmoid region of waterfowl (Aves, Anseriformes): Phylogenetic signal and major evolutionary patterns

Mendoza

Gómez

Tambussi

2020

Journal of Morphology

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Waterfowl (Aves, Anseriformes) constitute an ancient global radiation, and understanding the pattern and timing of their evolution requires a well-corroborated phylogeny including extant species and fossils. Following the molecular advances in avian systematics, however, morphology has often been held as misleading, yet congruence with molecular data has been shown to vary considerably among different skeletal parts. Here, we explore phylogenetic signal in discrete characters of the lacrimal/ectethmoid region of waterfowl, which is highly variable among species and constitutes a rich source of data. We do so by combining cladistic and multivariate approaches, and using phylogenetic comparative methods. We quantitatively recognize three major morphological types among lacrimal bones, and discuss homoplasy and potential synapomorphies of major clades using a molecular backbone tree. Our results clearly indicate that the lacrimal bone carries substantial phylogenetic signal and could be of systematic value at different levels of the phylogeny of waterfowl, feeding the exploration of other regions of the skull with this combined approach.

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Ecomorphology of the tarsometatarsus of waterfowl (Anseriformes) based on geometric morphometrics and its application to fossils

Mendoza

Gómez

2022

The Anatomical Record

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Anseriformes is a diverse group of birds that comprises screamers, the Magpie Goose, and swans ducks and geese, with a relatively rich fossil record. Waterfowl live in close relation to water bodies, but show a diversity of locomotory habits, being typically categorized as walkers, dabblers, and divers. Owing to its functional significance and high preservation potential, the tarsometatarsus has been considered to be a “key” element upon which to base ecomorphological inferences in fossil waterfowl. For instance, based on features of the tarsometatarsus the Miocene flightless duck Cayaoa bruneti and the Oligocene‐Miocene large waterfowl Paranyroca have been inferred as divers. Herein, we use a geometric morphometric approach and comparative methods to assess the phylogenetic and ecomorphological signals in the shape and size of waterfowl tarsometatarsi in relation to their locomotory habits. We also apply phylogenetic flexible discriminant analysis (pFDA) to test the inferred diving habits in the extinct waterfowl Cayaoa and Paranyroca. Extant waterfowl species are largely distributed according to their locomotory habit along the main axis of variation in the shape space, a pattern mirrored by the phylogenetic generalized least squares model, which shows that a third of the shape variation is significantly explained by the habit. The pFDA reclassifies correctly almost all extant species and classified with high posterior probabilities the fossil Cayaoa and Paranyroca as a diver and as a dabbler, respectively. Our quantitative multivariate approach confirms the tarsometatarsus as a useful source of data upon which reliably assesses locomotory habits of fossil waterfowl.

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High ecomorphological diversity among Early Cretaceous frogs from a large subtropical wetland of Iberia

Cited by 16 publications

References 68 publications

Ecomorphology of the pectoral girdle in anurans (Amphibia, Anura): Shape diversity and biomechanical considerations

Ecomorphology of the pectoral girdle in anurans (Amphibia, Anura): Shape diversity and biomechanical considerations

The lacrimal/ectethmoid region of waterfowl (Aves, Anseriformes): Phylogenetic signal and major evolutionary patterns

Ecomorphology of the tarsometatarsus of waterfowl (Anseriformes) based on geometric morphometrics and its application to fossils

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