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      Gastrotrichs and tardigrades in a remnant of Atlantic Forest (Serra do Japi, SP, Brazil) Translated title: Gastrótricos e tardígrados em um remanescente de Mata Atlântica (Serra do Japi, SP, Brasil)

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          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.

          Translated abstract

          Resumo: A Serra do Japi, localizada no sudeste do Estado de São Paulo, é considerada uma área prioritária para conservação, por abrigar vestígios de cobertura original de Mata Atlântica. Apesar do número significativo de estudos sobre vertebrados e invertebrados realizados nesta região, a biodiversidade de grupos meiofaunais é completamente desconhecida. Assim, o presente estudo teve como objetivo investigar pela primeira vez Gastrotricha de água doce e Tardigrada limnoterrestre na Reserva Biológica da Serra do Japi. As amostras de sedimentos, perifíton e vegetação flutuante em reservatórios e lagoas naturais, e musgos presentes em troncos de árvores nativas e não nativas foram coletadas em maio de 2019. Foram encontrados cinco morfotipos de gastrótricos, sendo que apenas três deles já foram formalmente descritos: Chaetonotus acanthocephalus, C. dadayi (primeiro registro no Brasil) e Heterolepidoderma mariae (primeiro registro fora da localidade-tipo). Em relação aos tardígrados, foram identificados doze morfotipos, sendo que quatro deles já formalmente descritos: Pseudechiniscus juanitae, Minibiotus cf. acontistus, Echiniscus dreyfusi e Itaquascon umbellinae (as duas últimas espécies relatadas pela primeira vez fora da localidade-tipo). Este trabalho reforça que a diversidade e distribuição da meiofauna têm sido subestimadas, mesmo em um dos cinco maiores hotspots do mundo.

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          Most cited references89

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          The Tardigrada Register: a comprehensive online data repository for tardigrade taxonomy

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            Systematic Criteria of the Eutardigrada

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              An experimental test of eutardigrade preparation methods for light microscopy

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                Author and article information

                Journal
                bn
                Biota Neotropica
                Biota Neotrop.
                Instituto Virtual da Biodiversidade | BIOTA - FAPESP (Campinas, SP, Brazil )
                1676-0611
                2021
                : 21
                : 2
                : e20201165
                Affiliations
                [1] Campinas São Paulo orgnameUniversidade Estadual de Campinas orgdiv1Instituto de Biologia orgdiv2Departamento de Biologia Animal Brazil
                Article
                S1676-06032021000200298 S1676-0603(21)02100200298
                10.1590/1676-0611-bn-2020-1165
                a8cf9b71-7a8f-4e70-8059-274fba192c21

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 24 November 2020
                : 09 March 2021
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 89, Pages: 0
                Product

                SciELO Brazil

                Self URI: Full text available only in PDF format (EN)
                Categories
                Article

                floating vegetation,musgo,vegetação flutuante,meiofauna,Lista de espécies,moss,Checklist

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