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Wilson LAB, López-Aguirre C, Archer M, Hand SJ, Flores D, Abdala F, Giannini NP. Patterns of ontogenetic evolution across extant marsupials reflect different allometric pathways to ecomorphological diversity. Nat Commun 2023; 14:2689. [PMID: 37164950 PMCID: PMC10172307 DOI: 10.1038/s41467-023-38365-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 04/24/2023] [Indexed: 05/12/2023] Open
Abstract
The relatively high level of morphological diversity in Australasian marsupials compared to that observed among American marsupials remains poorly understood. We undertake a comprehensive macroevolutionary analysis of ontogenetic allometry of American and Australasian marsupials to examine whether the contrasting levels of morphological diversity in these groups are reflected in their patterns of allometric evolution. We collate ontogenetic series for 62 species and 18 families of marsupials (n = 2091 specimens), spanning across extant marsupial diversity. Our results demonstrate significant lability of ontogenetic allometric trajectories among American and Australasian marsupials, yet a phylogenetically structured pattern of allometric evolution is preserved. Here we show that species diverging more than 65 million years ago converge in their patterns of ontogenetic allometry under animalivorous and herbivorous diets, and that Australasian marsupials do not show significantly greater variation in patterns of ontogenetic allometry than their American counterparts, despite displaying greater magnitudes of extant ecomorphological diversity.
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Affiliation(s)
- Laura A B Wilson
- School of Archaeology and Anthropology, The Australian National University, Canberra, ACT 2600, Australia.
- Earth & Sustainability Science Research Centre, School of Biological, Earth & Environmental Sciences, University of New South Wales, Sydney, NSW, 2052, Australia.
| | - Camilo López-Aguirre
- Department of Anthropology, University of Toronto Scarborough, Toronto, ON, Canada
| | - Michael Archer
- Earth & Sustainability Science Research Centre, School of Biological, Earth & Environmental Sciences, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Suzanne J Hand
- Earth & Sustainability Science Research Centre, School of Biological, Earth & Environmental Sciences, University of New South Wales, Sydney, NSW, 2052, Australia
| | - David Flores
- Unidad Ejecutora Lillo (Consejo Nacional de Investigaciones Científicas y Técnicas-Fundación Miguel Lillo). Instituto de Vertebrados, Fundación Miguel Lillo. Miguel Lillo 251, CP 4000, Tucumán, Argentina
| | - Fernando Abdala
- Unidad Ejecutora Lillo (Consejo Nacional de Investigaciones Científicas y Técnicas-Fundación Miguel Lillo), Miguel Lillo 251, CP4000, Tucumán, Argentina
| | - Norberto P Giannini
- Unidad Ejecutora Lillo (Consejo Nacional de Investigaciones Científicas y Técnicas-Fundación Miguel Lillo), Miguel Lillo 251, CP4000, Tucumán, Argentina
- Cátedra de Biogeografía, Universidad Nacional de Tucumán, Tucumán, Argentina
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2
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Segura V, Flores D, Deferrari G. Comparison of skull growth in two ecosystem modifiers: Beavers Castor canadensis (Rodentia: Castoridae) and muskrats Ondatra zibethicus (Rodentia: Cricetidae). ZOOL ANZ 2023. [DOI: 10.1016/j.jcz.2023.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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3
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The Cranial Morphospace of Extant Marsupials. J MAMM EVOL 2021. [DOI: 10.1007/s10914-021-09589-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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4
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Griffin CT, Stocker MR, Colleary C, Stefanic CM, Lessner EJ, Riegler M, Formoso K, Koeller K, Nesbitt SJ. Assessing ontogenetic maturity in extinct saurian reptiles. Biol Rev Camb Philos Soc 2020; 96:470-525. [PMID: 33289322 DOI: 10.1111/brv.12666] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 10/09/2020] [Accepted: 10/28/2020] [Indexed: 01/06/2023]
Abstract
Morphology forms the most fundamental level of data in vertebrate palaeontology because it is through interpretations of morphology that taxa are identified, creating the basis for broad evolutionary and palaeobiological hypotheses. Assessing maturity is one of the most basic aspects of morphological interpretation and provides the means to study the evolution of ontogenetic changes, population structure and palaeoecology, life-history strategies, and heterochrony along evolutionary lineages that would otherwise be lost to time. Saurian reptiles (the least-inclusive clade containing Lepidosauria and Archosauria) have remained an incredibly diverse, numerous, and disparate clade through their ~260-million-year history. Because of the great disparity in this group, assessing maturity of saurian reptiles is difficult, fraught with methodological and terminological ambiguity. We compiled a novel database of literature, assembling >900 individual instances of saurian maturity assessment, to examine critically how saurian maturity has been diagnosed. We review the often inexact and inconsistent terminology used in saurian maturity assessment (e.g. 'juvenile', 'mature') and provide routes for better clarity and cross-study coherence. We describe the various methods that have been used to assess maturity in every major saurian group, integrating data from both extant and extinct taxa to give a full account of the current state of the field and providing method-specific pitfalls, best practices, and fruitful directions for future research. We recommend that a new standard subsection, 'Ontogenetic Assessment', be added to the Systematic Palaeontology portions of descriptive studies to provide explicit ontogenetic diagnoses with clear criteria. Because the utility of different ontogenetic criteria is highly subclade dependent among saurians, even for widely used methods (e.g. neurocentral suture fusion), we recommend that phylogenetic context, preferably in the form of a phylogenetic bracket, be used to justify the use of a maturity assessment method. Different methods should be used in conjunction as independent lines of evidence when assessing maturity, instead of an ontogenetic diagnosis resting entirely on a single criterion, which is common in the literature. Critically, there is a need for data from extant taxa with well-represented growth series to be integrated with the fossil record to ground maturity assessments of extinct taxa in well-constrained, empirically tested methods.
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Affiliation(s)
- Christopher T Griffin
- Department of Geosciences, Virginia Tech, 926 West Campus Drive, Blacksburg, VA, 24061, U.S.A
| | - Michelle R Stocker
- Department of Geosciences, Virginia Tech, 926 West Campus Drive, Blacksburg, VA, 24061, U.S.A
| | - Caitlin Colleary
- Department of Geosciences, Virginia Tech, 926 West Campus Drive, Blacksburg, VA, 24061, U.S.A
- Department of Vertebrate Paleontology, Cleveland Museum of Natural History, 1 Wade Oval Drive, Cleveland, OH, 44106, U.S.A
| | - Candice M Stefanic
- Department of Geosciences, Virginia Tech, 926 West Campus Drive, Blacksburg, VA, 24061, U.S.A
- Department of Anatomical Sciences, Stony Brook University, 100 Nicolls Road, Stony Brook, NY, 11794, U.S.A
| | - Emily J Lessner
- Department of Geosciences, Virginia Tech, 926 West Campus Drive, Blacksburg, VA, 24061, U.S.A
- Department of Pathology and Anatomical Sciences, University of Missouri, 1 Hospital Drive, Columbia, MO, 65212, U.S.A
| | - Mitchell Riegler
- Department of Geosciences, Virginia Tech, 926 West Campus Drive, Blacksburg, VA, 24061, U.S.A
- Department of Geological Sciences, University of Florida, 241 Williamson Hall, Gainesville, FL, 32611, U.S.A
| | - Kiersten Formoso
- Department of Geosciences, Virginia Tech, 926 West Campus Drive, Blacksburg, VA, 24061, U.S.A
- Department of Earth Sciences, University of Southern California, 3651 Trousdale Pkwy, Los Angeles, CA, 90089, U.S.A
- Dinosaur Institute, Natural History Museum of Los Angeles County, 900 W Exposition Boulevard, Los Angeles, CA, 90007, U.S.A
| | - Krista Koeller
- Department of Geosciences, Virginia Tech, 926 West Campus Drive, Blacksburg, VA, 24061, U.S.A
- Department of Biology, University of Florida, 220 Bartram Hall, Gainesville, FL, 32611, U.S.A
| | - Sterling J Nesbitt
- Department of Geosciences, Virginia Tech, 926 West Campus Drive, Blacksburg, VA, 24061, U.S.A
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5
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Campo DH, Caraballo DA, Cassini GH, Lucero SO, Teta P. Integrative taxonomy of extant maras supports the recognition of the genera Pediolagus and Dolichotis within the Dolichotinae (Rodentia, Caviidae). J Mammal 2020. [DOI: 10.1093/jmammal/gyaa038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
The subfamily Dolichotinae (Rodentia, Caviidae) includes two living species (Dolichotis patagonum and D. salinicola) of cursorial, long-legged rodents that inhabit semiarid thorn scrubs and shrublands in southern South America. Some authors consider that the morphological differences between D. patagonum and D. salinicola warrant circumscription of the latter in its own genus, Pediolagus. Based on a phylogeny and divergence times grounded on molecular data, as well as a qualitative and quantitative assessment of morphological differences, the distinction between Dolichotis and Pediolagus is equal to or greater than differences seen for other intergeneric comparisons within Cavioidea. Based on these results, we argue that the taxonomic designations of Dolichotis and Pediolagus should be retained.
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Affiliation(s)
- Denise H Campo
- Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, Ciudad Autónoma de Buenos Aires, Argentina
| | - Diego A Caraballo
- Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, Ciudad Autónoma de Buenos Aires, Argentina
- Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE), CONICET- Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, C1428EHA Ciudad Autónoma de Buenos Aires, Argentina
| | - Guillermo H Cassini
- División Mastozoología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia,” Ciudad Autónoma de Buenos Aires, Argentina
- Departamento de Ciencias Básicas, Universidad Nacional de Luján, Ruta 5 y Av. Constitución s/n, Luján, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas – CONICET, Godoy Cruz, Ciudad Autónoma de Buenos Aires, Argentina
| | - Sergio O Lucero
- División Mastozoología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia,” Ciudad Autónoma de Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas – CONICET, Godoy Cruz, Ciudad Autónoma de Buenos Aires, Argentina
| | - Pablo Teta
- División Mastozoología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia,” Ciudad Autónoma de Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas – CONICET, Godoy Cruz, Ciudad Autónoma de Buenos Aires, Argentina
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6
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González B, Soria-Escobar AM, Rojas-Díaz V, Pustovrh MC, Salazar Monsalve L, Rougier GW. The embryo of the silky shrew opossum, Caenolestes fuliginosus (Tomes, 1863): First description of the embryo of Paucituberculata. J Morphol 2020; 281:326-337. [PMID: 31984547 DOI: 10.1002/jmor.21101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 12/30/2019] [Accepted: 01/11/2020] [Indexed: 12/22/2022]
Abstract
The development of caenolestid marsupials (order Paucituberculata) is virtually unknown. We provide here the first description of Caenolestes fuliginosus embryos collected in the Colombian Central Andes. Our sample of four embryos comes from a single female caught during a fieldtrip at Río Blanco (Manizales, Caldas), in 2014. The sample was processed for macroscopic description using a Standard Event System and for histological descriptions (sectioning and staining). The grade of development of the lumbar flexure and coelomic closure differed between embryos, two of them being more advanced than the others (similar to McCrady's stages 30 and 29, respectively). The pericardial and peritoneal cavities were present, the hepatic anlage was organized in hepatic cords, the heart was in its final position, and the mesonephros was functional. Compared to other Neotropical marsupials, an early appearance of the frontonasal-maxillary fusion and the cervical growth (thickness) was observed; however, absorption of the pharyngeal arches into the body and lung development was delayed. Besides these differences, embryos were similar to equivalent stages in Didelphis virginiana and Monodelphis domestica. Previous proposals of litter size of four for C. fuliginosus are supported.
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Affiliation(s)
- Baltazar González
- Centro de Investigación Esquel de Montaña y Estepa Patagónica (CIEMEP), Esquel, Argentina
| | - Ana M Soria-Escobar
- Departamento de Morfología, Escuela de Ciencias Básicas, Universidad del Valle, Cali, Colombia
| | | | - María Carolina Pustovrh
- Departamento de Morfología, Escuela de Ciencias Básicas, Universidad del Valle, Cali, Colombia
| | | | - Guillermo W Rougier
- Department of Anatomical Sciences and Neurobiology, University of Louisville, Louisville, Kentucky
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7
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Ordonez MDLA, Cassini GH, Vizcaíno SF, Marsicano CA. A geometric morphometric approach to the analysis of skull shape in Triassic dicynodonts (Therapsida, Anomodontia) from South America. J Morphol 2019; 280:1808-1820. [PMID: 31621947 DOI: 10.1002/jmor.21066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 09/03/2019] [Accepted: 09/09/2019] [Indexed: 01/02/2023]
Abstract
Dicynodont therapsids were a major component of the Permo-Triassic terrestrial ecosystems across Pangea and have been regarded as specialized herbivores. In South America, the group was represented by several taxa of the clade Kannemeyeriiformes spanning from the Middle to the Late Triassic. In order to evaluate if cranial differences among taxa are potentially related to differences in feeding function, we performed a geometric morphometric analysis on 28 South American dicynodont crania. We digitized 19 cranial landmarks and conducted generalized Procrustes analysis, principal component analysis (PCA), principal component analysis between groups (bg-PCA), and a branch weighted squared-change parsimony approach. Phylogenetic inertia was not a significant driver of cranial shape evolution in the group, whereas PCA and bg-PCA support that major morphological shape differences are concentrated in the preorbital region (relative length of the snout and width of the caniniform process), in the position of quadrate condyle in relation to the caniniform process, and in the increase in the intertemporal surface area. In this context, tusked Dinodontosaurus, "Kannemeyeria," and Vinceria have relatively smaller adductor attachment areas and input moment arm than younger taxa lacking tusks, such as Ischigualastia, Stahleckeria, and Jachaleria. Differences in cranial morphology in later dicynodonts reflect modifications in feeding mechanics, probably due to changes in food resources (vegetation) in their habitats toward the end of the Triassic.
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Affiliation(s)
- Maria de Los Angeles Ordonez
- Departamento de Ciencias Geologicas, Universidad de Buenos Aires, IDEAN, Ciudad Autonoma de Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Guillermo H Cassini
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.,División Mastozoología, Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", Ciudad Autónoma de Buenos Aires, Argentina.,Departamento de Ciencias Básicas, Universidad Nacional de Luján, Luján, Buenos Aires, Argentina
| | - Sergio F Vizcaíno
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.,Division Paleontología Vertebrados, Museo de La Plata, Unidades de Investigación Anexo Museo, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, La Plata, Argentina
| | - Claudia A Marsicano
- Departamento de Ciencias Geologicas, Universidad de Buenos Aires, IDEAN, Ciudad Autonoma de Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
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8
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Fernandez Blanco MV, Cassini GH, Bona P. Skull ontogeny of extant caimans: a three-dimensional geometric morphometric approach. ZOOLOGY 2018; 129:69-81. [DOI: 10.1016/j.zool.2018.06.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 06/15/2018] [Accepted: 06/18/2018] [Indexed: 01/10/2023]
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9
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Flores DA, Giannini N, Abdala F. Evolution of post-weaning skull ontogeny in New World opossums (Didelphidae). ORG DIVERS EVOL 2018. [DOI: 10.1007/s13127-018-0369-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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10
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Anatomical and Radiographic Study on the Skull and Mandible of the Common Opossum ( Didelphis Marsupialis Linnaeus, 1758) in the Caribbean. Vet Sci 2018; 5:vetsci5020044. [PMID: 29690583 PMCID: PMC6024663 DOI: 10.3390/vetsci5020044] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 04/17/2018] [Accepted: 04/18/2018] [Indexed: 11/17/2022] Open
Abstract
Common opossums (Didelphis marsupialis) are found throughout the Caribbean island of Trinidad and Tobago. The present work was conducted on 10 skulls and mandibles of the common opossum to describe the osteology and foramina of these skulls and mandibles grossly and radiographically. The information that is garnered can be used to detect, diagnose, and treat head affections, as well as for comparative studies with the skulls and mandibles of other similar species. The skulls and mandibles were prepared and cleaned using standard method. All of the characteristic features of various standards views of the skulls bones, including dorsal, lateral, caudal and midsagittal, and the lateral and caudal views of the mandibles as well as the foramina of the skulls and mandibles were described and discussed. Each skull was divided into long facial and short cranial regions. No supraorbital foramen was observed in the skulls. The tympanic bulla was absent while there was the tympanic process of the alisphenoid. The temporal process of the zygomatic bone, zygomatic process of maxilla, and zygomatic process of the squamosal bone formed the zygomatic arch. The dental formula was confirmed. The bones and foramina of the skull and mandible were similar to other marsupial species and were homologue to that of other mammals.
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11
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Moyano SR, Cassini GH, Giannini NP. Skull Ontogeny of the Hyraxes Procavia capensis and Dendrohyrax arboreus (Procaviidae: Hyracoidea). J MAMM EVOL 2018. [DOI: 10.1007/s10914-017-9424-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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12
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González-Chávez B, Rojas-Díaz V, Cruz-Bernate L. Demographic Parameters of the Silky Shrew-Opossum Caenolestes fuliginosus (Paucituberculata, Caenolestidae) along an Altitudinal Gradient in the Cordillera Central of the Colombian Andes. J MAMM EVOL 2017. [DOI: 10.1007/s10914-017-9417-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Hernandez G, Garcia S, Vilela JF, de la Sancha NU. Ontogenetic variation of an omnivorous generalist rodent: the case of the montane akodont (Akodon montensis). J Mammal 2017. [DOI: 10.1093/jmammal/gyx135] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Affiliation(s)
- Gabriel Hernandez
- Department of Biological Sciences, Chicago State University, 9501 S. King Drive, Chicago, IL 60628, USA (GH, NUDLS)
- Integrative Research Center, The Field Museum of Natural History, 1400 S. Lake Shore Drive, Chicago, IL 60605, USA (GH, JFV, NUDLS)
| | - Soraida Garcia
- Department of Ecological Sciences and Engineering, Purdue University, 610 Purdue Mall, West Lafayette, IN 47907, USA (SG)
| | - Júlio F Vilela
- Integrative Research Center, The Field Museum of Natural History, 1400 S. Lake Shore Drive, Chicago, IL 60605, USA (GH, JFV, NUDLS)
| | - Noé U de la Sancha
- Department of Biological Sciences, Chicago State University, 9501 S. King Drive, Chicago, IL 60628, USA (GH, NUDLS)
- Integrative Research Center, The Field Museum of Natural History, 1400 S. Lake Shore Drive, Chicago, IL 60605, USA (GH, JFV, NUDLS)
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14
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Sánchez-Villagra MR, Segura V, Geiger M, Heck L, Veitschegger K, Flores D. On the lack of a universal pattern associated with mammalian domestication: differences in skull growth trajectories across phylogeny. ROYAL SOCIETY OPEN SCIENCE 2017; 4:170876. [PMID: 29134088 PMCID: PMC5666271 DOI: 10.1098/rsos.170876] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 09/11/2017] [Indexed: 05/19/2023]
Abstract
As shown in a taxonomically broad study, domestication modifies postnatal growth. Skull shape across 1128 individuals was characterized by 14 linear measurements, comparing 13 pairs of wild versus domesticated forms. Among wild forms, the boar, the rabbit and the wolf have the highest proportion of allometric growth, explaining in part the great morphological diversity of the domesticated forms of these species. Wild forms exhibit more isometric growth than their domesticated counterparts. Multivariate comparisons show that dogs and llamas exhibit the greatest amount of differences in trajectories with their wild counterparts. The least amount is recorded in the pig-boar, and camel and horse pairs. Bivariate analyses reveal that most domesticated forms have growth trajectories different from their respective wild counterparts with regard to the slopes. In pigs and camels slopes are shared and intercepts are different. There is a trajectory extension in most domesticated herbivores and the contrary pattern in carnivorous forms. However, there is no single, universal and global pattern of paedomorphosis or any other kind of heterochrony behind the morphological diversification that accompanies domestication.
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Affiliation(s)
- Marcelo R. Sánchez-Villagra
- Palaeontological Institute and Museum, University of Zurich, Karl-Schmid-Strasse 4, 8006 Zurich, Switzerland
- Author for correspondence: Marcelo R. Sánchez-Villagra e-mail:
| | - Valentina Segura
- Unidad Ejecutora Lillo, Consejo Nacional de Investigaciones Científicas y Técnicas-Fundación Miguel Lillo, Argentina
| | - Madeleine Geiger
- Palaeontological Institute and Museum, University of Zurich, Karl-Schmid-Strasse 4, 8006 Zurich, Switzerland
- Department of Zoology, University of Cambridge, Downing Street, Cambridge, CB2 3EJ, UK
| | - Laura Heck
- Palaeontological Institute and Museum, University of Zurich, Karl-Schmid-Strasse 4, 8006 Zurich, Switzerland
| | - Kristof Veitschegger
- Palaeontological Institute and Museum, University of Zurich, Karl-Schmid-Strasse 4, 8006 Zurich, Switzerland
| | - David Flores
- Unidad Ejecutora Lillo, Consejo Nacional de Investigaciones Científicas y Técnicas-Fundación Miguel Lillo, Argentina
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15
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Pilatti P, Astúa D. Orbit orientation in didelphid marsupials (Didelphimorphia: Didelphidae). Curr Zool 2017; 63:403-415. [PMID: 29492000 PMCID: PMC5804188 DOI: 10.1093/cz/zow068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2016] [Accepted: 05/25/2016] [Indexed: 11/13/2022] Open
Abstract
Usually considered a morphologically conservative group, didelphid marsupials present considerable variation in ecology and body size, some of which were shown to relate to morphological structures. Thus, changes on orbit morphology are likely and could be related to that variation. We calculated orbit orientation in 873 specimens of 16 Didelphidae genera yielding estimates of orbits convergence (their position relative to midsagittal line) and verticality (their position relative to frontal plane). We then compared similarities in these variables across taxa to ecological, morphological and phylogenetic data to evaluate the influencing factors on orbit orientation in didelphids. We found an inverse relation between convergence and verticality. Didelphids orbits have low verticality but are highly convergent, yet orbit orientation differs significantly between taxa, and that variation is related to morphological aspects of the cranium. Rostral variables are the only morphological features correlated with orbit orientation: increasing snout length yields more convergent orbits, whereas increase on snout breadth imply in more vertical orbits. Size and encephalization quotients are uncorrelated with orbit orientation. Among ecological data, diet showed significant correlation whereas locomotion is the factor that less affects the position of orbits. Phylogeny is uncorrelated to any orbital parameters measured. Ecological factors seemingly play a more important role on orbit orientation than previously expected, and differentiation on orbit orientation seems to be more functional than inherited. Thus, despite the apparent homogeneity on didelphid morphology, there is subtle morphological variability that may be directly related to feeding behavior.
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Affiliation(s)
- Patricia Pilatti
- Laboratório de Mastozoologia, Departamento de Zoologia, Universidade Federal de Pernambuco. Av. Prof. Moraes Rego S/N, Cidade Universitária, Recife, PE 50670-901, Brazil
| | - Diego Astúa
- Laboratório de Mastozoologia, Departamento de Zoologia, Universidade Federal de Pernambuco. Av. Prof. Moraes Rego S/N, Cidade Universitária, Recife, PE 50670-901, Brazil
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16
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Sánchez-Villagra MR, Forasiepi AM. On the development of the chondrocranium and the histological anatomy of the head in perinatal stages of marsupial mammals. ZOOLOGICAL LETTERS 2017; 3:1. [PMID: 28203388 PMCID: PMC5303607 DOI: 10.1186/s40851-017-0062-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2016] [Accepted: 02/07/2017] [Indexed: 05/06/2023]
Abstract
An overview of the literature on the chondrocranium of marsupial mammals reveals a relative conservatism in shape and structures. We document the histological cranial anatomy of individuals representing Monodelphis domestica, Dromiciops gliroides, Perameles sp. and Macropus eugenii. The marsupial chondrocranium is generally characterized by the great breadth of the lamina basalis, absence of pila metoptica and large otic capsules. Its most anterior portion (cupula nasi anterior) is robust, and anterior to it there are well-developed tactile sensory structures, functionally important in the neonate. Investigations of ossification centers at and around the nasal septum are needed to trace the presence of certain bones (e.g., mesethmoid, parasphenoid) across marsupial taxa. In many adult marsupials, the tympanic floor is formed by at least three bones: alisphenoid (alisphenoid tympanic process), ectotympanic and petrosal (rostral and caudal tympanic processes); the squamosal also contributes in some diprotodontians. The presence of an entotympanic in marsupials has not been convincingly demonstrated. The tubal element surrounding the auditory tube in most marsupials is fibrous connective tissue rather than cartilage; the latter is the case in most placentals recorded to date. However, we detected fibrocartilage in a late juvenile of Dromiciops, and a similar tissue has been reported for Tarsipes. Contradictory reports on the presence of the tegmen tympani can be found in the literature. We describe a small tegmen tympani in Macropus. Several heterochronic shifts in the timing of development of the chondocranium and associated structures (e.g., nerves, muscles) and in the ossification sequence have been interpreted as largely being influenced by functional requirements related to the altriciality of the newborn marsupial during early postnatal life. Comparative studies of chondocranial development of mammals can benefit from a solid phylogenetic framework, research on non-classical model organisms, and integration with imaging and sectional data derived from computer-tomography.
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Affiliation(s)
- Marcelo R. Sánchez-Villagra
- Paläontologisches Institut und Museum der Universität Zürich, Karl Schmid Strasse 4, Zürich, 8006 Switzerland
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Flores DA, del Castillo D, Yamada T. Postnatal cranial growth of Risso’s dolphin (Grampus griseus). MAMMALIA 2017. [DOI: 10.1515/mammalia-2016-0052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThe short-nosed Risso’s dolphin (
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del Castillo DL, Viglino M, Flores DA, Cappozzo HL. Skull ontogeny and modularity in two species ofLagenorhynchus: Morphological and ecological implications. J Morphol 2016; 278:203-214. [DOI: 10.1002/jmor.20629] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 09/28/2016] [Accepted: 10/21/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Daniela L. del Castillo
- Laboratorio de Ecología, Comportamiento y Mamíferos Marinos, División Mastozoología; Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Av. Ángel Gallardo 470 (C1405DJR) Buenos Aires Argentina
- CONICET. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
| | - Mariana Viglino
- CONICET. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
- Instituto Patagónico de Geología y Paleontología, CCT CONICET-CENPAT; Boulevard Brown 2915 (U9120ACD) Puerto Madryn Chubut Argentina
| | - David A. Flores
- CONICET. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
- Unidad Ejecutora Lillo, CONICET-Fundación Miguel Lillo; Miguel Lillo 251 Tucumán 4000 Argentina
- Instituto de Vertebrados, Fundación Miguel Lillo; Miguel Lillo 251 (CP4000) Tucumán Argentina
| | - Humberto L. Cappozzo
- Laboratorio de Ecología, Comportamiento y Mamíferos Marinos, División Mastozoología; Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Av. Ángel Gallardo 470 (C1405DJR) Buenos Aires Argentina
- CONICET. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
- Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y Diagnóstico, Departamento de Ciencias Naturales y Antropología; Fundación Azara, Universidad Maimonides; Hidalgo 775 7mo (C1405BDB) Buenos Aires Argentina
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On the growth of the largest living rodent: Postnatal skull and dental shape changes in capybara species (Hydrochoerus spp.). Mamm Biol 2016. [DOI: 10.1016/j.mambio.2016.02.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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del Castillo DL, Segura V, Flores DA, Cappozzo HL. Cranial development and directional asymmetry in Commerson’s dolphin,Cephalorhynchus commersonii commersonii: 3D geometric morphometric approach. J Mammal 2016. [DOI: 10.1093/jmammal/gyw101] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Palci A, Lee MSY, Hutchinson MN. Patterns of postnatal ontogeny of the skull and lower jaw of snakes as revealed by micro-CT scan data and three-dimensional geometric morphometrics. J Anat 2016; 229:723-754. [PMID: 27329823 DOI: 10.1111/joa.12509] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/17/2016] [Indexed: 12/17/2022] Open
Abstract
We compared the head skeleton (skull and lower jaw) of juvenile and adult specimens of five snake species [Anilios (=Ramphotyphlops) bicolor, Cylindrophis ruffus, Aspidites melanocephalus, Acrochordus arafurae, and Notechis scutatus] and two lizard outgroups (Ctenophorus decresii, Varanus gilleni). All major ontogenetic changes observed were documented both qualitatively and quantitatively. Qualitative comparisons were based on high-resolution micro-CT scanning of the specimens, and detailed quantitative analyses were performed using three-dimensional geometric morphometrics. Two sets of landmarks were used, one for accurate representation of the intraspecific transformations of each skull and jaw configuration, and the other for comparison between taxa. Our results document the ontogenetic elaboration of crests and processes for muscle attachment (especially for cervical and adductor muscles); negative allometry in the braincase of all taxa; approximately isometric growth of the snout of all taxa except Varanus and Anilios (positively allometric); and positive allometry in the quadrates of the macrostomatan snakes Aspidites, Acrochordus and Notechis, but also, surprisingly, in the iguanian lizard Ctenophorus. Ontogenetic trajectories from principal component analysis provide evidence for paedomorphosis in Anilios and peramorphosis in Acrochordus. Some primitive (lizard-like) features are described for the first time in the juvenile Cylindrophis. Two distinct developmental trajectories for the achievement of the macrostomatan (large-gaped) condition in adult snakes are documented, driven either by positive allometry of supratemporal and quadrate (in pythons), or of quadrate alone (in sampled caenophidians); this is consistent with hypothesised homoplasy in this adaptive complex. Certain traits (e.g. shape of coronoid process, marginal tooth counts) are more stable throughout postnatal ontogeny than others (e.g. basisphenoid keel), with implications for their reliability as phylogenetic characters.
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Affiliation(s)
- Alessandro Palci
- South Australian Museum, Adelaide, SA, Australia.,School of Biological Sciences, Flinders University, Adelaide, SA, Australia
| | - Michael S Y Lee
- South Australian Museum, Adelaide, SA, Australia.,School of Biological Sciences, Flinders University, Adelaide, SA, Australia
| | - Mark N Hutchinson
- South Australian Museum, Adelaide, SA, Australia.,School of Biological Sciences, Flinders University, Adelaide, SA, Australia.,School of Biological Sciences, University of Adelaide, Adelaide, SA, Australia
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