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Description of Lepidochaetus tirjakovae sp. nov. (Gastrotricha: Paucitubulatina: Chaetonotidae), using morphology and DNA barcoding. ZOOL ANZ 2021. [DOI: 10.1016/j.jcz.2021.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Guidetti EB, Campos A, Batistão AR, Silva ATD, Bilatto CG, Salgado KA, Araújo TQ, Garraffoni ARS. Gastrotrichs and tardigrades in a remnant of Atlantic Forest (Serra do Japi, SP, Brazil). BIOTA NEOTROPICA 2021. [DOI: 10.1590/1676-0611-bn-2020-1165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Abstract: Serra do Japi, located in the southeast of São Paulo State, is considered a priority area for conservation, as it houses original Atlantic Forest cover remains. Despite the significant number of studies about vertebrates and invertebrates that were carried out in this region, the meiofauna biodiversity is completely unknown. Thus, the present study aimed to investigate for the first time freshwater Gastrotricha and limnoterrestrial Tardigrada in Serra do Japi Biological Reserve. Samples of sediments, periphyton and floating vegetation in reservoirs and natural lagoons, and mosses growing on native and non-native tree trunks were collected in May 2019. At least five gastrotrichs morphotypes were identified and three of them were formally described: Chaetonotus acanthocephalus, C. dadayi (first record in Brazil), and Heterolepidoderma mariae (first record outside the type locality). In regards to tardigrades, twelve morphotypes were identified and four of them were formally described: Pseudechiniscus juanitae, Minibiotus cf. acontistus, Echiniscus dreyfusi and Itaquascon umbellinae (last two species reported for the first time outside the type locality). This study reinforces that meiofaunal diversity and distribution have been underestimated, even in one of the five largest hotspots in the world.
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Campos A, Garraffoni ARS. A synopsis of knowledge, zoogeography and an online interactive map of Brazilian marine gastrotrichs. PeerJ 2019; 7:e7898. [PMID: 31637137 PMCID: PMC6802584 DOI: 10.7717/peerj.7898] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 09/16/2019] [Indexed: 12/02/2022] Open
Abstract
Information regarding the records of Brazilian marine gastrotrichs is presented. We systematized and organized the existing information associated with approximately 23 species (belonging to the genera Aspidiophorus, Chaetonotus, Crasiella, Dactylopodola, Dendrodasys, Draculiciteria, Halichaetonotus, Heteroxenotrichula, Kryptodasys, Macrodasys, Pseudostomella, Ptychostomella, Urodasys and Xenotrichula) from the Brazilian coast (eight endemic) and their 1,581 records from 36 marine ecoregions of the world. A link is provided to an on-line interactive map where all occurrences for each species are shown, accompanied by geographic coordinates, oceans, countries, cities, granulometric characteristics and ecoregions. Furthermore, a critical analysis of the geographical distribution of Brazilian marine gastrotrichs, an estimate of the number of undescribed species, a summary of the existence and status of taxonomical collections are also presented.
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Affiliation(s)
- Ariane Campos
- Laboratory of Evolutionary Meiofauna, Department of Animal Biology, University of Campinas, Campinas, São Paulo, Brazil
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Garraffoni ARS, Araújo TQ, Lourenço AP, Guidi L, Balsamo M. Integrative taxonomy of a new Redudasys species (Gastrotricha: Macrodasyida) sheds light on the invasion of fresh water habitats by macrodasyids. Sci Rep 2019; 9:2067. [PMID: 30765851 PMCID: PMC6376054 DOI: 10.1038/s41598-018-38033-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 12/19/2018] [Indexed: 11/26/2022] Open
Abstract
The order Macrodasyida (Gastrotricha) includes over 350 marine species, and only 3 freshwater species (Marinellina flagellata, Redudasys fornerise, R. neotemperatus). Herein we describe a new freshwater species of Macrodasyida, Redudasys brasiliensis sp. nov., from Brazil through an integrative taxonomic approach. The external morphology and internal anatomy were investigated using differential interference contrast microscopy, confocal microscopy, scanning and transmission electron microscopy. The systematization of the new taxon was inferred by nuclear (18S and 28S) and mitochondrial (COI) genes, and its intra-order relationships were assessed using data from most of available macrodasyids. Phylogenetic analyses yielded congruent trees, in which the new taxon is nested within the family Redudasyidae, but it was genetically distinct from the other species of the genus Redudasys. The new species shares the gross morphology and reproductive traits with other Redudasyidae and the presence of only 1 anterior adhesive tube per side with Redudasys neotemperatus, but it has a specific pattern of ventral ciliation and muscle organization. Results support the hypothesis that dispersion into fresh water habitats by Macrodasyida and Chaetonotida taxa occurred independently and that within Macrodasyida a single lineage invaded the freshwater environment only once. Furthermore, the Neotropical region seems to be peculiar for the evolution of the freshwater macrodasyid clade.
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Affiliation(s)
- André R S Garraffoni
- Department of Animal Biology, Institute of Biology, State University of Campinas, R. Monteiro Lobato, 255, 13083-970, Campinas, SP, Brazil.
| | - Thiago Q Araújo
- Departament of Zoology, Institute of Biological Science, Federal University of Minas Gerais, Av. Antonio Carlos, 6627, 31270-901, Belo Horizonte, MG, Brazil
| | - Anete P Lourenço
- Departament of Biological Science, Federal University of Jequitinhonha and Mucuri Valleys, Rod. BR-367, 39100-000, Diamantina, MG, Brazil
| | - Loretta Guidi
- Department of Biomolecular Sciences, University of Urbino, Campus Scientifico, Via Ca' le Suore, 2, 61049, Urbino, PU, Italy
| | - Maria Balsamo
- Department of Biomolecular Sciences, University of Urbino, Campus Scientifico, Via Ca' le Suore, 2, 61049, Urbino, PU, Italy
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Garraffoni ARS. Checklist de Gastrotricha do Estado do Mato Grosso do Sul, Brasil. IHERINGIA. SERIE ZOOLOGIA 2017. [DOI: 10.1590/1678-4766e2017104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
RESUMO Neste estudo é apresentada uma lista atualizada das espécies de Gastrotricha que ocorrem nos corpos de água do estado de Mato Grosso do Sul. A grande maioria das espécies de Gastrotricha pertence a Chaetonotidae (quatro gêneros, nove espécies), seguida por Dasydytidae (três gêneros, três espécies) e Neogosseidae (um gênero, uma espécie). Como apenas um estudo foi realizado até hoje no estado do Mato Grosso do Sul, é mais do que evidente que o conhecimento da biodiversidade dos Gastrotricha está totalmente subestimado neste estado.
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Kånneby T, Kirk JJ. A new species of Redudasys (Gastrotricha: Macrodasyida: Redudasyidae) from the United States. P BIOL SOC WASH 2017. [DOI: 10.2988/17-00006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Tobias Kånneby
- (TK) Department of Zoology, Swedish Museum of Natural History, P.O. Box 50007, SE-104 05 Stockholm, Sweden,
| | - James J. Kirk
- (JJK) 12775 S. Maple Grove Rd., Molalla, Oregon, U.S.A. 97038
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Garraffoni ARS, Araújo TQ, Lourenço AP, Guidi L, Balsamo M. A new genus and new species of freshwater Chaetonotidae (Gastrotricha: Chaetonotida) from Brazil with phylogenetic position inferred from nuclear and mitochondrial DNA sequences. SYST BIODIVERS 2016. [DOI: 10.1080/14772000.2016.1214189] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- André R. S. Garraffoni
- Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas, Caixa Postal 6109, 13083-970, Campinas, SP, Brazil
- Departamento de Ciências Biológicas, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Campus JK, Rodovia BR-367, 39100-000, Diamantina, MG, Brazil
| | - Thiago Q. Araújo
- Pós-Graduação em Zoologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, 31270-901, Belo Horizonte, MG, Brazil
| | - Anete P. Lourenço
- Departamento de Ciências Biológicas, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Campus JK, Rodovia BR-367, 39100-000, Diamantina, MG, Brazil
| | - Loretta Guidi
- Dipartimento di Scienze Biomolecolari, Campus Scientifico, Via Ca’ le Suore, 2, Urbino, Italy
| | - Maria Balsamo
- Dipartimento di Scienze Biomolecolari, Campus Scientifico, Via Ca’ le Suore, 2, Urbino, Italy
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Kånneby T, Wicksten MK. First record of the enigmatic genusRedudasysKisielewski, 1987 (Gastrotricha: Macrodasyida) from the Northern hemisphere. ZOOSYSTEMA 2014. [DOI: 10.5252/z2014n4a2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Araújo TQ, Coimbra Alcântara F, Rinaldo Senna Garraffoni A. New records of Gastrotricha from Minas Gerais, Brazil. STUDIES ON NEOTROPICAL FAUNA AND ENVIRONMENT 2013. [DOI: 10.1080/01650521.2013.786953] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Todaro MA, Dal Zotto M, Jondelius U, Hochberg R, Hummon WD, Kånneby T, Rocha CEF. Gastrotricha: a marine sister for a freshwater puzzle. PLoS One 2012; 7:e31740. [PMID: 22348127 PMCID: PMC3279426 DOI: 10.1371/journal.pone.0031740] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2011] [Accepted: 01/11/2012] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Within an evolutionary framework of Gastrotricha Marinellina flagellata and Redudasys fornerise bear special interest, as they are the only Macrodasyida that inhabit freshwater ecosystems. Notwithstanding, these rare animals are poorly known; found only once (Austria and Brazil), they are currently systematised as incertae sedis. Here we report on the rediscovery of Redudasys fornerise, provide an account on morphological novelties and present a hypothesis on its phylogenetic relationship based on molecular data. METHODOLOGY/PRINCIPAL FINDINGS Specimens were surveyed using DIC microscopy and SEM, and used to obtain the 18 S rRNA gene sequence; molecular data was analyzed cladistically in conjunction with data from 42 additional species belonging to the near complete Macrodasyida taxonomic spectrum. Morphological analysis, while providing new information on taxonomically relevant traits (adhesive tubes, protonephridia and sensorial bristles), failed to detect elements of the male system, thus stressing the parthenogenetic nature of the Brazilian species. Phylogenetic analysis, carried out with ML, MP and Bayesian approaches, yielded topologies with strong nodal support and highly congruent with each other. Among the supported groups is the previously undocumented clade showing the alliance between Redudasys fornerise and Dactylopodola agadasys; other strongly sustained clades include the densely sampled families Thaumastodermatidae and Turbanellidae and most genera. CONCLUSIONS/SIGNIFICANCE A reconsideration of the morphological traits of Dactylopodola agadasys in light of the new information on Redudasys fornerise makes the alliance between these two taxa very likely. As a result, we create Anandrodasys gen. nov. to contain members of the previously described D. agadasys and erect Redudasyidae fam. nov. to reflect this novel relationship between Anandrodasys and Redudasys. From an ecological perspective, the derived position of Redudasys, which is deeply nested within the Macrodasyida clade, unequivocally demonstrates that invasion of freshwater by gastrotrichs has taken place at least twice, in contrast with the single event hypothesis recently put forward.
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Affiliation(s)
- M Antonio Todaro
- Department of Biology, University of Modena and Reggio Emilia, Modena, Italy.
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