Description :
This database is the result of a combination of international collaboration efforts to collect specimens of Halicarcinus planatus through its geographical distribution in the Southern Ocean and bibliographic reviews. There are 4 types of records: (1) individualized by specimen, comprising more than 1,150 animals corresponding to nominal species of Halicarcinus planatus in South America and Kerguelen Islands, (2) groups of specimens of H. planatus collected and stored, (3) records obtained by bibliographic reviews, and (4) more than 50 absence records of H. planatus. The purpose of this resource is to complement molecular, taxonomic, biogeographic and niche-modelling studies that are being carried out based on these specimens.
Link GBIF portal : https://www.gbif.org/dataset/75a6f6f1-de60-4ec6-8830-2766719231e7
Project :
Title : Phylogeography, population genetic structure and connectivity of the Subantarctic crab Halicarcinus planatus, the first alien marine invertebrate discovered in Antarctica
Abstract : This project seeks to evaluate the level of genetic diversity of Halicarcinus planatus along its subantarctic distribution, determinate the phylogeographic structure as well as the existence and number of evolutionary units. To determine the geographic scale at which the genetic differentiation operates and the connectivity pattern between remote populations. This will allow to evaluate the ability of H. planatus to invade the Antarctic Peninsula by dispersal way. Finally, to make an appraisal of the presence of H. planatus in the West Antarctic.
Under this framework, this resource focuses on understanding past, present and future processes, through molecular tools, niche models and Lagrangian models. The potential niche of H. planatus permits to estimate its present and future southward boundaries under IPCC predictions (to test if in the future it is able to arrive and establish in Antarctica), Lagrangian models will permit to obtain information about its larval dispersion, and molecular tools to obtain information about Quaternary glacial processes, among others. To obtain the base information, we updated data existing (from GBIF) adding presences and absences data from undocumented places of South America, South Georgia Island, Kerguelen Island and Antarctica through sampling and bibliographic reviews.
Funding : FONDECYT 1161358; FONDECYT 1151336; INACh DG 14-17; Conicyt Ph.D. Grant 21151192; PIA CONICYT ACT172065 (GAB); INACH DT-04_16; Projects: IPEV Nº 1044 (Proteker).
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