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Jorgewich-Cohen G, Werneburg I, Jobbins M, Ferreira GS, Taylor MD, Bastiaans D, Sánchez-Villagra MR. Morphological Diversity of Turtle Hyoid Apparatus is Linked to Feeding Behavior. Integr Org Biol 2024; 6:obae014. [PMID: 38741667 PMCID: PMC11090499 DOI: 10.1093/iob/obae014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 04/03/2024] [Accepted: 05/01/2024] [Indexed: 05/16/2024] Open
Abstract
The hyoid apparatus of tetrapods is highly diverse in its morphology. It plays an important role in feeding, breathing, sound production, and various other behaviors. Among turtles, the diversity of the hyoid apparatus has been recurrently linked to their habitat. The ossification of the hyoid corpus is often the main trait used in correlations with "niche" occupancy, an ossified corpus being associated with aquatic environments and a cartilaginous corpus with terrestrial life. Most studies conducted so far have focused on species belonging to Testudinoidea, the clade that occupies the biggest diversity of habitats (i.e., terrestrial, semi-terrestrial, and aquatic animals), while other turtle lineages have been largely understudied. We assessed the adult anatomy of the hyoid apparatus of 92 turtle species from all "families", together with ossification sequences from embryological series of 11 species, some described for the first time here. Using nearly 40 different discrete anatomical characters, we discuss the evolutionary patterns and the biological significance of morphological transformations in the turtle hyoid elements. Morphological changes are strongly associated to feeding modes, with several instances of convergent evolution within and outside the Testudines clade, and are not as strongly connected to habitat as previously thought. Some of the hyoid character states we describe are diagnostic of specific turtle clades, thus providing phylogenetically relevant information.
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Affiliation(s)
- G Jorgewich-Cohen
- Department of Paleontology, University of Zurich, 8006 Zurich, Switzerland
| | - I Werneburg
- Senckenberg Centre for Human Evolution and Palaeoenvironment an der Universität Tübingen, Tübingen, Germany
- Fachbereich Geowissenshcaten dr Universität Tübingen, 72074 Tübingen, Germany
| | - M Jobbins
- Department of Paleontology, University of Zurich, 8006 Zurich, Switzerland
| | - G S Ferreira
- Senckenberg Centre for Human Evolution and Palaeoenvironment an der Universität Tübingen, Tübingen, Germany
- Fachbereich Geowissenshcaten dr Universität Tübingen, 72074 Tübingen, Germany
| | - M D Taylor
- School of Biological Sciences, The University of Western Australia, Perth, WA 6009, Australia
- The UWA Oceans Institute, The University of Western Australia, Perth, WA 6009, Australia
| | - D Bastiaans
- Department of Paleontology, University of Zurich, 8006 Zurich, Switzerland
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Melo LIDS, Matias de Oliveira RE, Freitas Caetano de Sousa AC, de Oliveira RM, Lima MA, Fragoso ABL, Silva FJDL, Attademo FLN, Luna FDO, Pereira AF, de Oliveira MF. Antillean manatee (Trichechus manatus manatus Linnaeus, 1758) Tongue Morphology and Adaptive Herbivorous Implications. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2024; 30:160-168. [PMID: 38123367 DOI: 10.1093/micmic/ozad135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 10/31/2023] [Accepted: 11/24/2023] [Indexed: 12/23/2023]
Abstract
Morphological study of the tongue is an interesting way of understanding evolutionary processes associated with feeding habits. Therefore, the aim of the present study was to describe the tongue morphology of the Antillean manatee and to understand possible morphological relationships with its way of capturing food. Macroscopic dissections and light and scanning electron microscopy analyses of seven manatee tongues were performed. The tongue in Antillean manatees is a muscular and robust organ, divided into apex, body, and root. It is firmly adhered to the floor of the oral cavity. Lingual papillae were distributed over the entire tongue surface. They were identified as filiform papillae concentrated in the apex. Fungiform papillae were present on the apex and lateral regions. Foliate papillae were located on the dorsolateral portion of the root. Lentiform papillae were located across the dorsal tongue surface. The mucosa was lined by a keratinized stratified squamous epithelium presenting compound tubuloacinar glands and taste buds in the foliate papillae. The tongue of the Antillean manatee is similar to other Sirenia species, both of which share a completely herbivorous diet.
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Affiliation(s)
- Lucas Inácio Dos Santos Melo
- Postgraduate Program in Animal Science, Department of Biosciences, Biological and Health Sciences Center, Federal University of the Semi-Arid Region (UFERSA), Avenida Francisco Mota, 572, Bairro Costa e Silva, Mossoró, Rio Grande do Norte, 59625-900, Brazil
- National Center for Research and Conservation of Aquatic Mammals by Chico Mendes Institute for Biodiversity Conservation (CMA/ICMBio), Alexandre Herculano, 197, bairro Gonzaga, Santos, São Paulo, 11050-031, Brazil
| | - Radan Elvis Matias de Oliveira
- Postgraduate Program in Animal Science, Department of Biosciences, Biological and Health Sciences Center, Federal University of the Semi-Arid Region (UFERSA), Avenida Francisco Mota, 572, Bairro Costa e Silva, Mossoró, Rio Grande do Norte, 59625-900, Brazil
- Center for Environmental Studies and Monitoring (CEMAM), Rua Jorge Caminha, 118, bairro Centro, Areia Branca, Rio Grande do Norte, 59655-000, Brazil
- Cetáceos da Costa Branca Project, University of the State of Rio Grande do Norte (PCCB-UERN), Almino Afonso, 478, Mossoró, Rio Grande do Norte, 59610-210, Brazil
| | - Ana Caroline Freitas Caetano de Sousa
- Postgraduate Program in Animal Science, Department of Biosciences, Biological and Health Sciences Center, Federal University of the Semi-Arid Region (UFERSA), Avenida Francisco Mota, 572, Bairro Costa e Silva, Mossoró, Rio Grande do Norte, 59625-900, Brazil
| | - Rysónely Maclay de Oliveira
- Postgraduate Program in Animal Science, Department of Biosciences, Biological and Health Sciences Center, Federal University of the Semi-Arid Region (UFERSA), Avenida Francisco Mota, 572, Bairro Costa e Silva, Mossoró, Rio Grande do Norte, 59625-900, Brazil
- Cetáceos da Costa Branca Project, University of the State of Rio Grande do Norte (PCCB-UERN), Almino Afonso, 478, Mossoró, Rio Grande do Norte, 59610-210, Brazil
| | - Mariana Almeida Lima
- Postgraduate Program in Animal Science, Department of Biosciences, Biological and Health Sciences Center, Federal University of the Semi-Arid Region (UFERSA), Avenida Francisco Mota, 572, Bairro Costa e Silva, Mossoró, Rio Grande do Norte, 59625-900, Brazil
- Center for Environmental Studies and Monitoring (CEMAM), Rua Jorge Caminha, 118, bairro Centro, Areia Branca, Rio Grande do Norte, 59655-000, Brazil
- Cetáceos da Costa Branca Project, University of the State of Rio Grande do Norte (PCCB-UERN), Almino Afonso, 478, Mossoró, Rio Grande do Norte, 59610-210, Brazil
| | - Ana Bernadete Lima Fragoso
- Center for Environmental Studies and Monitoring (CEMAM), Rua Jorge Caminha, 118, bairro Centro, Areia Branca, Rio Grande do Norte, 59655-000, Brazil
- Cetáceos da Costa Branca Project, University of the State of Rio Grande do Norte (PCCB-UERN), Almino Afonso, 478, Mossoró, Rio Grande do Norte, 59610-210, Brazil
| | - Flávio José de Lima Silva
- Center for Environmental Studies and Monitoring (CEMAM), Rua Jorge Caminha, 118, bairro Centro, Areia Branca, Rio Grande do Norte, 59655-000, Brazil
- Cetáceos da Costa Branca Project, University of the State of Rio Grande do Norte (PCCB-UERN), Almino Afonso, 478, Mossoró, Rio Grande do Norte, 59610-210, Brazil
- Doctoral Program in Development and Environment (PRODEMA), Federal University of Rio Grande do Norte (UFRN), Avenida Salgado Filho, 3000, bairro Lagoa Nova, Natal, Rio Grande do Norte, 59064-741, Brazil
| | - Fernanda Loffler Niemeyer Attademo
- National Center for Research and Conservation of Aquatic Mammals by Chico Mendes Institute for Biodiversity Conservation (CMA/ICMBio), Alexandre Herculano, 197, bairro Gonzaga, Santos, São Paulo, 11050-031, Brazil
- Department of Zoology, Postgraduate Program in Animal Biology, Laboratory of Ecology, Behavior and Conservation, Federal University of Pernambuco (UFPE), Professor Morais Rego, s/n, Recife, Pernambuco, 50670-901, Brazil
| | - Fábia de Oliveira Luna
- National Center for Research and Conservation of Aquatic Mammals by Chico Mendes Institute for Biodiversity Conservation (CMA/ICMBio), Alexandre Herculano, 197, bairro Gonzaga, Santos, São Paulo, 11050-031, Brazil
| | - Alexsandra Fernandes Pereira
- Postgraduate Program in Animal Science, Department of Biosciences, Biological and Health Sciences Center, Federal University of the Semi-Arid Region (UFERSA), Avenida Francisco Mota, 572, Bairro Costa e Silva, Mossoró, Rio Grande do Norte, 59625-900, Brazil
| | - Moacir Franco de Oliveira
- Postgraduate Program in Animal Science, Department of Biosciences, Biological and Health Sciences Center, Federal University of the Semi-Arid Region (UFERSA), Avenida Francisco Mota, 572, Bairro Costa e Silva, Mossoró, Rio Grande do Norte, 59625-900, Brazil
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Ferraz RS, Corrêa LAD, Calvet MCR, Santiago PMM, da Silva Teófilo T, de Oliveira REM, Martins AL, Barreto LN, Silva MML. Morphological tongue and palate characterizations in Trachemys adiutrix (Vanzolini, 1995) turtles. Anat Histol Embryol 2023; 52:519-527. [PMID: 36799805 DOI: 10.1111/ahe.12908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 12/05/2022] [Accepted: 01/27/2023] [Indexed: 02/18/2023]
Abstract
Morphological studies on the oropharyngeal cavity of turtles are an interesting tool in understanding evolutionary processes associated with feeding habits. There is paucity of morphological information on the oropharyngeal cavity of the Trachemys adiutrix turtle. Thus, the aim of this study was to describe the tongue and palate morphology of T. adiutrix to establish a standard model for the species, providing information that may improve knowledge on the species feeding habits. Gross dissection, light microscopy and scanning electron microscopy assessments of 11 specimens were carried out. The tongue of T. adiutrix is triangular with a slightly rounded apex and broad base and lingual papillae widely distributed throughout the entire dorsal surface. The palate is composed of bony structures, displaying a triangular apex with one pair of choanae and palatine raphe that begin in the middle region, dividing the two openings. The body was elongated and smooth. The root was wrinkled and opened into the oesophagus. The tongue was lined by non-keratinized stratified squamous epithelium, rich in mucous cells and a large number of different-shaped papillae and taste buds. The palate was mainly lined by a pseudostratified cylindrical ciliated epithelium rich in mucous cells. In conclusion, the tongue and palate characteristics of T. adiutrix include evidence that these animals are semiaquatic, displaying morphological characteristics associated with aquatic and terrestrial trophic ecology, similar to that observed in other semiaquatic and terrestrial chelonian species.
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Affiliation(s)
- Rafaella Sousa Ferraz
- Biological Sciences and Health Center, Federal University of Maranhão, São Luís- MA, Brazil.,Nucleus of Oncology Research, Federal University of Pará, Belém-PA, Brazil
| | | | | | | | - Tiago da Silva Teófilo
- Department of Biosciences, Biological and Health Sciences Center, Federal University of the Semi-Arid Region, Mossoró-RN, Brazil
| | - Radan Elvis Matias de Oliveira
- Applied Animal Morphophysiology Laboratory (LABMORFA), Department of Animal Sciences, Federal University of the Semi-Arid Region, Mossoró-RN, Brazil
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