Genome and specific biodiversity of oceanic squids assessed through Next Generation Sequencing

Presenting Author: Fernando Á. Fernández-Álvarez

Authors: Fernando Á. Fernández-Álvarez, A. Louise Allcock;

Affiliation:
Ryan Institute and School of Natural Sciences, National University of Ireland Galway, Ireland, Ryan Institute and School of Natural Sciences, National University of Ireland Galway, Ireland

Oceanic squids of the order Oegopsida Orbigny, 1845 have great ecological and evolutionary importance, and some of them al so are important economic resources. Despite that, they are among the most mysterious groups of pelagic organisms. There are still many knowledge gaps, such as the actual relationships between the 22 oceanic squid families, and the actual biodiversity hidden within many of the putatively “cosmopolitan” species of the group. Starting in October 2019, the 2 – year postdoc project GOIPD/2019/460 “Genome and specific biodiversity of oceanic squids assessed through Next Generation Sequencing”, funded by the Irish Research Council, aims to address these two scientific questions. Aim 1: to understand the evolution of oceanic squids. To answer this question, we will use a phylogenomic framework based on a shallow whole genome sequencing method known as genome skimming using samples of 36 oegopsid species representing 86 % of the oegopsid biodiversity at the family level and 100 % of the described subfamilies. This will provide a better understanding of the evolution of several morphological and physiological traits that these animals developed to live in the water column. Aim 2: the assessment of biodiversity patterns in pelagic oceanic organisms using squids as models. We will address this using samples from 12 oegopsid species collected from Brazil to Iceland, and the Mediterranean Sea. Based on newly developed and commonly – used molecular markers, we are going to test the effect of several oceanic barriers to the population connectivity of these squids.

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