Banca de DEFESA: MARIA CAROLINA LIMA FARIAS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : MARIA CAROLINA LIMA FARIAS
DATE: 29/04/2021
TIME: 09:00
LOCAL: Sala Virtual - meet.google.com/isb-sapp-mac
TITLE:

REVEALING CRYPTIC DIVERSITY WITH BARCODE DNA IN SHRIMP OF THE TRIBE PENAEINI (DECAPODA, PENAEIDAE)

KEY WORDS:

Decapoda, Enigmatic Diversity, Species Delimitation, mtDNA.

PAGES: 57
BIG AREA: Ciências Biológicas
AREA: Genética
SUBÁREA: Genética Animal
SUMMARY:

The inability to identify biological species directly reflects conservation efforts, especially among those of great commercial interest, such as the Penaeidae family. Peneidae shrimp account for more than half of the world's crustacean fisheries, and play a valuable functional role in ecosystems, and have therefore been the subject of biological and genetic research for the past few decades. Among the peneids, the Penaeini Tribe stands out for its great diversity of species and high economic value. Recent systematic studies have suggested that the diversity of taxa within Penaeini has been underestimated, with taxonomic classifications and controversial phylogenetic relationships. In this sense, the present study uses phylogenetic and phylogeographic approaches to assess genetic diversity in representatives of the Penaeini Tribe, using the mitochondrial gene Cytochrome Oxidase Subunit I. In all, 1680 sequences of 28 species were accessed on the Bold Systems platform. Our data revealed the occurrence of identification errors or synonyms involving representatives of Penaeini. In addition, phylogenetic (bPTP and GMYC) and phylogeographic analyzes revealed that the diversity of this group of great commercial interest has been underestimated.  From the phylogeographic analyzes we found the existence of highly structured populations along several ecoregions of the Atlantic (19), Indian (16) and Pacific (10) oceans, for which some of them, the species delimitation methods (GMYC, bPTB) suggested that they are cryptic species. The highest concentration of cryptic diversity was found in the Indo-West Pacific region, pointing this region as the center of origin for the tribe. In this context, we discuss patterns and biogeographic processes that may have shaped the evolutionary history of this group of great commercial interest. Our data provide important information to support management actions that aim to guarantee the maintenance of these lines and their stocks in the long term.

BANKING MEMBERS:
Presidente - 2265276 - UEDSON PEREIRA JACOBINA
Interno - 2360032 - KIM RIBEIRO BARAO
Externo à Instituição - ALEXANDRE OLIVEIRA DE ALMEIDA - UFPE
Externo à Instituição - SILVIA BRITTO BARRETO