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Miniature Characiformes (Teleostei: Ostariophysi): evolution, diversity and biogeography

Grant number: 17/09321-5
Support type:BIOTA-FAPESP Program - Young Investigators Grants
Duration: March 01, 2018 - February 28, 2022
Field of knowledge:Biological Sciences - Zoology
Principal Investigator:Manoela Maria Marinho Koh
Grantee:Manoela Maria Marinho Koh
Home Institution: Museu de Zoologia (MZ). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Assoc. researchers:Aléssio Datovo da Silva ; Angela Maria Zanata ; Fernando Cesar Paiva Dagosta ; Fernando Rogério de Carvalho ; George Mendes Taliaferro Mattox ; James Hanken ; Marcelo de Bello Cioffi ; Mônica de Toledo-Piza Ragazzo ; Murilo Nogueira de Lima Pastana ; Naercio Aquino Menezes ; Osvaldo Takeshi Oyakawa ; Priscila Camelier de Assis Cardoso ; Ralf Britz
Associated scholarship(s):19/16041-4 - Taxonomic revision and osteology of the species complex Hemigrammus geisleri Zarske & Géry (Characiformes: Characidae), BP.MS
18/23354-6 - Phylogenetic relationships in Xenurobrycon Myers & Miranda-Ribeiro and discussion on miniaturization in the genus (Stervardiinae: Characidae: Characiformes), BP.MS
18/11415-0 - Miniature Characiformes (Teleostei: Ostariophysi): evolution, diversity and biogeography, AP.BTA.JP

Abstract

Eighty-seven species of miniature Characiformes, those not surpassing 26 mm of standard length, are listed. Miniature species are commonly associated to reductive morphological characters, such as bone absences and simplifications, probably due to heterochronic processes involved in the evolution of miniaturization. Paedomorphosis may be the best interpretation to those morphological, but this can only be corroborated by ontogenetic studies. In general, miniature fish fauna is underexploited and poorly known. There are several undescribed species and others with taxonomical problems, including some threatened species from São Paulo State. Furthermore, there are no studies on habitat and distribution of such fishes. The lack of knowledge of such diverse and unexplored fauna is the reason of this project that encompasses three components to contemplate the various aspects to be investigated: evolutionary, taxonomic and biogeographic. The first aims to elucidate the processes that lead to the evolution of small-sized lineages within the Characiformes, by studies on comparative anatomy of miniature fishes and of ontogenetic series of related larger-sized species. The taxonomic component aims to describe new species and to perform taxonomic reviews including molecular and cytogenetic analysis as additional tools to morphology, as well as field inventory. In the biogeographic component, distributional data of miniature species will be associated to historical and geomorphological data, in order to detect distributional patterns and to comprehend which environment had favored the evolution of small-sized lineages. This integrative study is pioneer in understanding the evolution and diversity and the conservation of this freshwater fish fauna. (AU)

Scientific publications (5)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ROSA DE MORAES, RENATA LUIZA; SEMBER, ALEXANDR; CARLOS BERTOLLO, LUIZ ANTONIO; DE OLIVEIRA, EZEQUIEL AGUIAR; RAB, PETR; HATANAKA, TERUMI; FERREIRA MARINHO, MANOELA MARIA; LIEHR, THOMAS; AL-RIKABI, AHMED B. H.; FELDBERG, ELIANA; VIANA, PATRIK F.; CIOFFI, MARCELO DE BELLO. Comparative Cytogenetics and Neo-Y Formation in Small-Sized Fish Species of the Genus Pyrrhulina (Characiformes, Lebiasinidae). FRONTIERS IN GENETICS, v. 10, AUG 2 2019. Web of Science Citations: 0.
MENEZES, NAERCIO A.; MARINHO, MANOELA M. F. A new species of Knodus Eigenmann (Characiformes: Characidae: Stevardiinae) with comments on nuptial tubercles and gill gland in characiform fishes. PLoS One, v. 14, n. 7 JUL 10 2019. Web of Science Citations: 0.
CAVALCANTE SASSI, FRANCISCO DE MENEZES; DE OLIVEIRA, EZEQUIEL AGUIAR; CARLOS BERTOLLO, LUIZ ANTONIO; NIRCHIO, MAURO; HATANAKA, TERUMI; FERREIRA MARINHO, MANOELA MARIA; MOREIRA-FILHO, ORLANDO; AROUTIOUNIAN, ROUBEN; LIEHR, THOMAS; AL-RIKABI, AHMED B. H.; CIOFFI, MARCELO DE BELLO. Chromosomal Evolution and Evolutionary Relationships of Lebiasina Species (Characiformes, Lebiasinidae). INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES, v. 20, n. 12 JUN 2 2019. Web of Science Citations: 0.
ANGELA MARIA ZANATA; RAFAEL BURGER; GEORGE VITA; PRISCILA CAMELIER. A new species of Astyanax (Characiformes: Characidae) from the rio de Contas basin, Bahia, Brazil. Neotropical Ichthyology, v. 17, n. 3, p. -, 2019.
DARLIM, GUSTAVO; MARINHO, MANOELA M. F. Moenkhausia lepidura (Kner, 1858) (Characiformes, Characidae): osteology and relationships. Biota Neotropica, v. 18, n. 4 2018. Web of Science Citations: 0.

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