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Dias PHDS, Phillips JR, Pereyra MO, Means DB, Haas A, Kok PJR. The remarkable larval morphology of Rhaebo nasicus (Werner, 1903) (Amphibia: Anura: Bufonidae) with the erection of a new bufonid genus and insights into the evolution of suctorial tadpoles. ZOOLOGICAL LETTERS 2024; 10:17. [PMID: 39350283 PMCID: PMC11440901 DOI: 10.1186/s40851-024-00241-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Accepted: 08/13/2024] [Indexed: 10/04/2024]
Abstract
Tadpoles serve as crucial evidence for testing systematic and taxonomic hypotheses. Suctorial tadpoles collected in Guyana were initially assigned to Rhaebo nasicus through molecular phylogeny. Subsequent analysis of larval and adult morphological traits revealed synapomorphies within the clade encompassing R. nasicus and R. ceratophrys, prompting the recognition of a new genus described herein as Adhaerobufo. The new genus is distinguished from other bufonids by specific phenotypic traits including an enlarged, suctorial oral disc with distinct papillae arrangements, and the presence of certain muscles and narial vacuities at the larval stage. However, only a few adult external characteristics (e.g., enlarged eyelids, infraocular cream spot), seem to be reliably discriminative from related genera. This study underscores the significance of larval morphology in anuran systematics and offers new insights into the evolution of suctorial and gastromyzophorous larvae within bufonids.
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Affiliation(s)
- Pedro Henrique Dos Santos Dias
- Leibniz Institut zur Analyse des Bioaffiliationersitätswandels, Zoologisches Museum Hamburg, Zentrum für Taxonomie und Morphologie, Martin-Luther-King-Platz 3, 20146, Hamburg, Germany.
| | | | - Martín O Pereyra
- CONICET - Agencia INTA General Acha, Avellaneda 530 (8200), General Acha, La Pampa, Argentina
| | - D Bruce Means
- Coastal Plains Institute and Land Conservancy, 1313 Milton Street, Tallahassee, Florida, 32303, USA
- Department of Biological Science, Florida State University, Tallahassee, Florida, 32303, USA
| | - Alexander Haas
- Leibniz Institut zur Analyse des Bioaffiliationersitätswandels, Zoologisches Museum Hamburg, Zentrum für Taxonomie und Morphologie, Martin-Luther-King-Platz 3, 20146, Hamburg, Germany
| | - Philippe J R Kok
- Department of Ecology and Vertebrate Zoology, Faculty of Biology and Environmental Protection, University of Łódź, 12/16 Banacha Str., Łódź, 90-237, Poland.
- Life Sciences, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK.
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Dos Santos Dias PH, Anganoy-Criollo M. Harlequin frog tadpoles-comparative buccopharyngeal morphology in the gastromyzophorous tadpoles of the genus Atelopus (Amphibia, Anura, Bufonidae), with discussion on the phylogenetic and evolutionary implication of characters. THE SCIENCE OF NATURE - NATURWISSENSCHAFTEN 2024; 111:3. [PMID: 38252296 PMCID: PMC10803719 DOI: 10.1007/s00114-024-01889-6] [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: 08/14/2023] [Revised: 12/30/2023] [Accepted: 01/05/2024] [Indexed: 01/23/2024]
Abstract
The Neotropical genus Atelopus is the most diverse genus of bufonids comprising 99 species. Tadpoles of these frogs are readily distinguished based on the presence of a belly sucker, used by them to stay attached to rocks in fast-flowing streams. Despite their intriguing biology, information about their anatomy is scarce and many morphological systems are unknown. We describe the buccopharyngeal cavity of five Atelopus species. The Atelopus buccopharyngeal cavity is characterized by (1) presence of a pendulum-like papillae in the prenarial arena, (2) presence of a glandular zone in the prenarial arena, (3) narial vacuities, (4) conical median ridge, (5) absence of buccal roof arena papillae, (6) absence of buccal roof pustulations, (7) single pair of infralabial papillae, (8) absence of lingual papillae, and (9) absence of pustulations in the buccal floor. We propose that characters 1, 2, and 3 are new synapomorphies for the genus. We also propose that the presence of a single pair of infralabial papillae is a synapomorphy for bufonid. Finally, we discuss the convergent evolution of gastromyzophorous and suctorial tadpoles withing anurans.
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Affiliation(s)
- Pedro Henrique Dos Santos Dias
- Leibniz Institut Zur Analyse Des Biodiversitätswandels, Zoologisches Museum Hamburg, Zentrum Für Taxonomie Und Morphologie, Martin-Luther-King-Platz 3, 20146, Hamburg, Germany.
- Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, Rua Do Matão No. 101, São Paulo, SP, CEP 05508-090, Brazil.
| | - Marvin Anganoy-Criollo
- Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, Rua Do Matão No. 101, São Paulo, SP, CEP 05508-090, Brazil
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Dias PHDS. First description of buccopharyngeal anatomy in Pelodryadinae larvae: Morphological comparison and systematic implications (Anura: Hylidae: Pelodryadinae: Litoria rubella and Ranoidea caerulea). J Morphol 2023; 284:e21651. [PMID: 37856280 DOI: 10.1002/jmor.21651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/25/2023] [Accepted: 09/26/2023] [Indexed: 10/21/2023]
Abstract
Pelodryadinae, the Australian tree frogs, is a monophyletic group endemic to the Australo-Papuan region. Although we have a relatively good knowledge about tadpoles' phenotypic diversity in terms of external morphology, information about internal anatomy is rare for the subfamily; for instance, their buccopharyngeal cavity is completely unknown. Herein I describe for the first time the buccopharyngeal anatomy of two pelodryadins: Litoria rubella and Ranoidea caerulea. I compare my results with available evidence from Phyllomedusidae, that is, the sister clade to Pelodryadinae, and briefly comment on buccopharyngeal cavity within Hylidae. Both species can be readily distinguished based on lateral ridge, postnarial, buccal roof arena, infralabial papillae, and lingual papillae. Variation between the two species may suggest a large diversity within Pelodryadinae. Pelodryadinae and Phyllomedusinae present similar buccopharyngeal morphologies, although Agalychnis callidryas has a unique morphology and putative apomorphic transformations can be observed in Pithecopus + Phyllomedusa, Ranoidea, and Phasmahyla.
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Affiliation(s)
- Pedro Henrique Dos Santos Dias
- Leibniz Institut zur Analyse des Biodiversitätswandels, Zoologisches Museum Hamburg, Zentrum für Taxonomie und Morphologie, Hamburg, Germany
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Orrico VGD, Grant T, Faivovich J, Rivera-Correa M, Rada MA, Lyra ML, Cassini CS, Valdujo PH, Schargel WE, Machado DJ, Wheeler WC, Barrio-Amorós C, Loebmann D, Moravec J, Zina J, Solé M, Sturaro MJ, Peloso PLV, Suarez P, Haddad CFB. The phylogeny of Dendropsophini (Anura: Hylidae: Hylinae). Cladistics 2021; 37:73-105. [PMID: 34478175 DOI: 10.1111/cla.12429] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/18/2020] [Indexed: 11/29/2022] Open
Abstract
The relationships of the hyline tribe Dendropsophini remain poorly studied, with most published analyses dealing with few of the species groups of Dendropsophus. In order to test the monophyly of Dendropsophini, its genera, and the species groups currently recognized in Dendropsophus, we performed a total evidence phylogenetic analysis. The molecular dataset included sequences of three mitochondrial and five nuclear genes from 210 terminals, including 12 outgroup species, the two species of Xenohyla, and 93 of the 108 recognized species of Dendropsophus. The phenomic dataset includes 46 terminals, one per species (34 Dendropsophus, one Xenohyla, and 11 outgroup species). Our results corroborate the monophyly of Dendropsophini and the reciprocal monophyly of Dendropsophus and Xenohyla. Some species groups of Dendropsophus are paraphyletic (the D. microcephalus, D. minimus, and D. parviceps groups, and the D. rubicundulus clade). On the basis of our results, we recognize nine species groups; for three of them (D. leucophyllatus, D. microcephalus, and D. parviceps groups) we recognize some nominal clades to highlight specific morphology or relationships and facilitate species taxonomy. We further discuss the evolution of oviposition site selection, where our results show multiple instances of independent evolution of terrestrial egg clutches during the evolutionary history of Dendropsophus.
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Affiliation(s)
- Victor G D Orrico
- Tropical Herpetology Laboratory, Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, km 16, Ilhéus, CEP 45662-900, Brazil
| | - Taran Grant
- Laboratório de Anfíbios, Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, CEP 05508-090, Brazil
| | - Julian Faivovich
- División Herpetología, Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"-CONICET, Angel Gallardo 470, Buenos Aires, C1405DJR, Argentina.,Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Mauricio Rivera-Correa
- Grupo Herpetológico de Antioquia, Instituto de Biología, Universidad de Antioquia, Medellín, Colombia
| | - Marco A Rada
- Laboratório de Anfíbios, Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, CEP 05508-090, Brazil
| | - Mariana L Lyra
- Departamento de Biodiversidade and Centro de Aquicultura, Instituto de Biociências, Universidade Estadual Paulista (UNESP), Av. 24A 1515, Rio Claro, CEP 13506-900, Brazil
| | - Carla S Cassini
- Tropical Herpetology Laboratory, Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, km 16, Ilhéus, CEP 45662-900, Brazil
| | - Paula H Valdujo
- Laboratório de Ecologia da Paisagem - Superintendência de Conservação, WWF-Brasil, Entre Quadra SHIS EQL 6/8 Conjunto E, Setor de Habitações Individuais Sul, Brasília, CEP 71620-430, Brazil
| | - Walter E Schargel
- Department of Biology, The University of Texas at Arlington, Arlington, TX, 76019, USA
| | - Denis J Machado
- Department of Bioinformatics and Genomics, University of North Carolina at Charlotte, 9201 University City Blvd., Charlotte, NC, 28223, USA
| | - Ward C Wheeler
- Division of Invertebrate Zoology, American Museum of Natural History, Central Park West, New York, NY, 10024, USA
| | | | - Daniel Loebmann
- Laboratório de Vertebrados, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Av. Itália, km 8, Rio Grande, CEP 96.203-900, Brazil
| | - Jiří Moravec
- Department of Zoology, National Museum, Cirkusová 1740, 193 00 Prague 9, Prague, Czech Republic
| | - Juliana Zina
- Departamento de Ciências Biológicas, Universidade Estadual do Sudoeste da Bahia, Av. José Moreira Sobrinho, Jequié, CEP 45205-490, Brazil
| | - Mirco Solé
- Tropical Herpetology Laboratory, Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, km 16, Ilhéus, CEP 45662-900, Brazil
| | - Marcelo J Sturaro
- Departamento de Ecologia e Biologia Evolutiva, Universidade Federal de São Paulo, Av. Professor Artur Riedel, 275, Jardim Eldorado, Diadema, CEP 09972-270, Brazil.,Coordenação de Zoologia, Museu Paraense Emílio Goeldi, Avenida Perimetral 1901, Terra Firme, Belém, CEP 66017-970, Brazil
| | - Pedro L V Peloso
- Instituto de Ciências Biológicas, Universidade Federal do Pará, R. Augusto Corrêa, 1, Guamá, Belém, 66075-110, Brazil
| | - Pablo Suarez
- Instituto de Biología Subtropical (IBS), CONICET-UNaM, Bertoni 85, Puerto Iguazú, (3370), Argentina
| | - Célio F B Haddad
- Departamento de Biodiversidade and Centro de Aquicultura, Instituto de Biociências, Universidade Estadual Paulista (UNESP), Av. 24A 1515, Rio Claro, CEP 13506-900, Brazil
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Dos Santos Dias PH. The remarkable larval anatomy of Proceratophrys minuta Napoli, Cruz, Abreu and Del-Grande, 2011 (Amphibia: Anura: Odontophrynidae). J Morphol 2021; 281:1086-1097. [PMID: 33448444 DOI: 10.1002/jmor.21233] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 06/14/2020] [Accepted: 06/21/2020] [Indexed: 11/08/2022]
Abstract
The free living larvae of anurans (i.e., tadpoles) are a key element in the evolution and diversification of this group, and as such, their morphology is an important element to understand the phylogenetic relationships of frogs. However, the lack of data on larval morphology prevents us from fully understanding larval evolution in several lineages. The Neotropical genus Proceratophrys currently comprises 39 species, but descriptions of the internal morphology of larvae in this group are rare and restricted to few aspects of their buccopharyngeal cavity, chondrocranium, and muscles. In the present study, I describe the internal anatomy of the tadpole of P. minuta and report a new remarkable myological character state for the species. Given the rarity of this material, the description of this species' buccopharyngeal and musculo-skeletal elements is based on two tadpoles in developmental stages 30 and 31. Several new apomorphic character states are described: (a) the presence of a conical papilla in the interior of the nostril; (b) a row of five short, conical papilla preceding the tall, postnarial papilla; and (c) the m. mandibulolabialis inserting in the gular skin. This latter feature is a remarkable, newly discovered character state that had never been reported in the literature before and is probably related to a particular feeding habit of the tadpoles of this species. The function of the m. mandibulolabialis in P. minuta is unknown.
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