Hand and Foot Musculature of Anura

Structure, Homology, Terminology, and Synapomorphies for Major Clades

Bibliographic Data

ID19259791
AuthorsBoris L Blotto (0000-0002-4086-5370, Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil; División Herpetología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”–CONICET, Buenos Aires, Argentina), Martín O Pereyra (0000-0002-1998-0163, División Herpetología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”–CONICET, Buenos Aires, Argentina; Laboratorio de Genética Evolutiva “Claudio J. Bidau,” Instituto de Biología Subtropical–CONICET, Facultad de Ciencias Exactas Químic), Taran Grant (0000-0003-1726-999X, Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil; Coleção de Anfíbios, Museu de Zoologia, Universidade de São Paulo, São Paulo, Brazil; Research Associate, Herpetology, Division of Vertebrate Zoology, A), Julián Faivovich (0000-0001-7157-8131, División Herpetología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”–CONICET, Buenos Aires, Argentina; Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos)
Year2020
Volume443
Issue1
Publication date2020-11-06
Peer ReviewedYes
Open AccessYes
TypeARTICLE
VenueBulletin of the American Museum of Natural History (BOOK_SERIES)
Journal identifiersISSN: 0003-0090 • E-ISSN: 1937-3546
PublisherAmerican Museum of Natural History (BioOne sponsored) (PUBLISHER)
DOI10.1206/0003-0090.443.1.1
OpenAlexW3097451616
LanguageEN
Citations received2
References cited123

Although studies of anuran hand and foot musculature began in the first half of the 19th century, all studies to date have been taxonomically or anatomically restricted in scope, and none has considered the diversity of autopodial myology in Anura as a whole. As a model for future comparisons, we thoroughly describe the hand and foot musculature of an arboreal species (the hylid Triprion petasatus), define the layers in which these muscles are arranged, and attribute presumed functions. On the basis of our myological analysis of 155 species representing 46 of the 54 currently recognized families and main clades of anurans, we describe 20 characters related to hand and foot muscles. Optimization of these characters on the most recent and inclusive phylogenetic hypothesis of Anura results in synapomorphies for several major clades (Bombinatoridae, Alytidae, Xenoanura + Acosmanura, Xenoanura, Pipidae, Acosmanura, Anomocoela, Scaphiopodidae, Pelodytidae + Pelobatidae + Megophryidae, Megophryidae, Neobatrachia, Heleophrynidae, Sooglossidae, Laurentobatrachia, Calyptocephalellidae, Myobatrachoidea, and Nobleobatrachia), including new, nonhomoplastic synapomorphies for clades previously supported only by molecular evidence and a few conflicting phenotypic characters (e.g., Acosmanura, Anomocoela, Neobatrachia). Additionally, we (1) address controversies regarding the homology of anuran and caudate muscles in the context of putative synapomorphies for Ascaphidae + Leiopelmatidae and its sister clade Lalagobatrachia; (2) evaluate a recently proposed terminology for anuran hand and foot musculature; (3) discuss the identities of several hand and foot muscles with problematic homologies; (4) establish a unified terminology for anuran hand and foot muscles, including a list of synonyms for all names employed in the literature; and (5) propose hypotheses for the origin of several myological novelties (neomorphs)

Arboreal locomotion · Biology · Clade · Evolutionary biology · Gene · Myology · Phylogenetic tree · Synapomorphy · Zoology · Amphibian and Reptile Biology · Anatomy · Animal Behavior and Reproduction · Ecology · Genetics · Turtle Biology and Conservation

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