Cladistic analysis of the Dasydytidae family (Gastrotricha: Chaetonotida) and contribution to the increase of gastritric sequences on GenBank genetic database

• Grant number: 17/20312-8
• Support type: Scholarships in Brazil - Scientific Initiation
• Effective date (Start): December 01, 2017
• Effective date (End): November 30, 2018
• Field of knowledge: Biological Sciences - Zoology - Taxonomy of Recent Groups
• Principal researcher: André Rinaldo Senna Garraffoni
• Grantee: Axell Kou Minowa
• Home Institution: Instituto de Biologia (IB). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Associated research grant: 14/23856-0 - Phylogenetic reconstruction of Gastrotricha based on molecular and morphological data, AP.BTA.JP

Abstract

Gastrotricha is a phylum of aquatic microinvertebrates commonly found in freshwater and marine environments around the world. Despite being abundant, this taxon is not very well known, possibly by its diminutive size and fragility of their bodies. The great majority of the gastrotrics present benthic lifestyle, whether associated with the sediment or the periphyton. The exception to this habit is seen in specimens of the family Dasydytidae, a group that contains rare organisms that developed the semi-planktonic lifestyle. Despite the fewphylogenetic studies, the most accepted hypothesis is that the taxon is monophyletic. However, the relations of relatives between the seven genera Dasydytidae, and their respective monophyly, have been practically never tested under a phylogenetic bias. Thus, the objective of the present study is to elucidate the phylogenetic relationship of the 32 Dasydytidae based on morphological data, besides testing the monophyly of the 7 genera.In addition, it is intended to carry out collections in new locations, to formally describe the Dasydytidae morphotype previously discovered (FAPESP Process Nº 2015 / 25066-0) and sequencing the mitochondrial genes COI and the ribosomal 18S and 28S of this new morphotype as well as the newly described species Haltydites pseudosquamatus Minowa & Garraffoni, 2017. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

MINOWA, AXELL; GARRAFFONI, ANDRE R. S. Seek and you shall find: new species of the rare genus Ornamentula (Gastrotricha: Chaetonotida) and first record outside of type-locality. Zoologia, v. 38, FEB 26 2021. Web of Science Citations: 0.

MINOWA, AXELL K.; GARRAFFONI, ANDRE R. S. Redescription of the dasydytid gastrotrich Haltidytes ooeides (Brunson, 1950) based on type material. ZOOKEYS, n. 785, p. 41-48, SEP 19 2018. Web of Science Citations: 0.