Harpagifer of the Southern Ocean

Description :

 This database is the result of an international collaboration effort to collect specimens of the Harpagifer genus throughout its geographical distribution in the Southern Ocean. More than 40 collection locations are incorporated along 3 biogeographic macro-zones (southern South America, sub-Antarctic Islands and Antarctica).
Records are individualized by specimen, comprising more than 850 animals corresponding to 8 nominal species of the Harpagifer genus in the Southern Ocean.
The purpose of this resource is to complement the molecular, taxonomic and biogeographic studies that are being carried out based on these specimens.

Link GBIF portal : https://www.gbif.org/dataset/ef2497c9-3b6b-4468-905d-430c87bd45ca

Project :
Title : Biogeography of Antarctic and Southern Ocean fauna
Abstract : This project seeks to understand biogeographic patterns of the Southern Ocean fauna based on their past and present interactions throughout different geographical areas. Through traditional and genomic molecular tools we intend to deliver insights regarding the climatic, oceanographic and tectonic processes that have marked the development and evolution of the Southern Ocean fauna. 
Under this framework this particular resource focuses on one of the most remarkable processes of diversification in the Antarctic realm, the evolution of the cold-adapted notothenioid fishes. While most of the teleost groups were completely eradicated from Antarctica, this suborder dominates in diversity, abundance and biomass. The evolutionary success of the Notothenioidei at sub-zero ecosystems has been explained by the presence of antifreeze glycoproteins (AFGPs), a key innovation in this Antarctic group. In particular, recent molecular study indicated that the
most species-rich lineages within the notothenioids diversified and evolved during the late Miocene (11.6 to 5.3 My), 10 My after the acquisition of AFPGs. However, most of these studies have been biased toward the relationships within the Antarctic Clade rather than in the association among phylogenetic closed taxa found inside and outside the Polar Front. Therefore, the evolutionary history of non-Antarctic notothenioids remains not well-established, even if AFGPs genes in temperate-water nototheniids can be used to infer an Antarctic evolutionary origin. 
Under the framework of this project, Harpagifer presents itself as an interesting model. Harpagiferidae is a monogeneric family with 12 nominal species restricted to the Southern Hemisphere widely distributed in the Southern Ocean.
Funding : PIA CONICYT ACT172065 (GAB); FONDECYT 1151336; INACH DG-03_16; Conicyt Ph.D. Grant 21140632; Conicyt Ph.D. Grant 2114063; PIA CONICYT APOYO CCTE AFB170008; FONDECYT 11140087;Projects: IPEV Nº 1044 (Proteker), FONDECYT 1161358. FONDECYT Post-Doctoral Project 3190482; Conicyt Ph.D. Grant 21181000; Conicyt Ph.D. Grant 21151192. INACH RG1817.
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Dates publication :

Premiere diffusion : 09/04/2021 

Dernière mise à jour : 30/11/2023