Banca de DEFESA: EWERTON VIEIRA DOS SANTOS

Uma banca de DEFESA DE MESTRADO foi cadastrada pelo programa.

DISCENTE: EWERTON VIEIRA DOS SANTOS
DATA: 18/02/2020
HORA: 14:00
LOCAL: ICBS - SALA 18
TÍTULO:

ECOLOGICAL PROCESSES SHAPE THE GENOME SIZE IN REEF FISHES OF THE POMACENTRIDAE FAMILY

 

RESUMO:

The Genome Size (GS) is known to vary widely among eukaryotes. However, the evolutionary drivers that shape this variation are largely unknown. Information about GS has been made available for several taxa of Actinopterygii, as is the case with representatives of the Pomacentridae family, which has diversified mainly in reef environments. In the present work, we evaluated by means of comparative phylogenetic methods which ecological traits shape the variation of the genome of these species. Our phylogenetic analyses, in a temporal context, show that the GS expanded and retracted several times quickly and independently of its kinship relations. However, we found a strong relationship between GS with temperature and salinity range, that is, larger genomes tend to have a greater niche range. In addition, when analysing the two highly supported clades called I and II, we see distinct evolutionary trajectories, mainly involving clade I which showed a strong association with trophic level, medium latitude and depth. Our data reveal the adaptive power of the genome size to shape the life history of Pomacentridae species regardless of their phylogenetic relationships.

PALAVRAS-CHAVE:

Reef Fish, Phylogenetic Comparative Methods, Adaptive Radiation, Ecological Niche.

PÁGINAS: 48
GRANDE ÁREA: Ciências Biológicas
ÁREA: Genética
SUBÁREA: Genética Animal

MEMBROS DA BANCA:
Presidente - 2265276 - UEDSON PEREIRA JACOBINA
Interno(a) - 1714987 - TAMI MOTT
Externo(a) à Instituição - JAMILLE DE ARAÚJO BITENCOURT - UESB
Externo(a) à Instituição - MARCELO RICARDO VICARI - UEPE