Banca de DEFESA: GUSTAVO COLAÇO GONÇALVES

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : GUSTAVO COLAÇO GONÇALVES
DATE: 25/01/2023
TIME: 13:00
LOCAL: on-line
TITLE:

Morphology, ontogeny and systematics of Cycloramphidae Bonaparte, 1850 (Lissamphibia: Anura)

KEY WORDS:

Development, Evolution, Tadpoles

PAGES: 120
BIG AREA: Ciências Biológicas
AREA: Zoologia
SUBÁREA: Morfologia dos Grupos Recentes
SUMMARY:

The neotropical genus Thoropa Cope is known for bringing together species that present
reproduction and development associated with thin sheets of water that flow over rocky
outcrops. Species in the genus have exotrophic and quasi-terrestrial tadpoles with
morphological adaptations that allow survival in this microhabitat. Currently, seven species are
recognized for the genus and recent phylogenetic hypotheses suggest distinct possibilities
regarding taxa related to Thoropa. The consensus is that Thoropa composes the
Cycloramphidae family together with the Cycloramphus species. Analyzes carried out so far
based on morphology, evaluated a limited range of characters against the morphological
diversity of the group. Here, with the evaluation of a set of larval and adult morphological
attributes, I investigate which hypotheses can result and what these indicate about the
proposition of taxa and the origin and fixation of characters associated with the evolution of
the genus. To this end, the seven nominal species of the genus and 28 more for the outgroup
were included, among members of the genus Cycloramphus, and of the families Alsodidae,
Batrachylidae, Hylodidae, Rhinodermatidae and Telmatobidae, associated with
Cycloramphidae in previous hypotheses. 125 characters from different sources were observed
and described, which supported the construction of a matrix containing discrete morphological
variations representing alternatives for the same homologous equivalent. The recombination
between the proposals evaluated in the TNT program resulted in 110 equally parsimonious
cladograms, each one having 359 steps. In a summary of these cladograms representing a
consensus among these results, the seven species of Thoropa form a monophyletic group that
presents four synapomorphies. The hypothesis also suggests that two groups exist in the genus,
one group formed by species with small adult semaphoronts, Thoropa petropolitana group and
another with larger traffic lights, Thoropa miliaris group. The Cycloramphidae family also
appears as monophyletic. In addition to the results presented here, four works in which I appear
as first author/collaborator were developed and published during the doctoral period,
containing partial results of this research and extensive discussions on the larval morphology,
ontogeny, systematics, and evolution of Thoropa and Cycloramphidae.

COMMITTEE MEMBERS:
Externo à Instituição - VICTOR GOYANNES DILL ORRICO - UESC
Externa à Instituição - RACHEL MONTESINOS MARTINS PEREIRA - UFMG
Externo à Instituição - JOÃO VICTOR ANDRADE DE LACERDA - INMA
Externa à Instituição - CARLA SANTANA CASSINI - UESB
Interna - 1217103 - ANA CLAUDIA DOS SANTOS BRASIL
Interno - 2289640 - HELIO RICARDO DA SILVA
Externo à Instituição - RENATO NEVES FEIO - UFV