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Guidi L, Balsamo M, Ferraguti M, Todaro MA. Reproductive organs and spermatogenesis of the peculiar spermatozoa of the genus
Kryptodasys
(Gastrotricha, Macrodasyida), with an appraisal of the occurrence and origin of the tail‐less spermatozoa in Gastrotricha. J ZOOL SYST EVOL RES 2021. [DOI: 10.1111/jzs.12556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Loretta Guidi
- Dipartimento di Scienze Biomolecolari Università di Urbino ‘Carlo Bo’ Urbino Italy
| | - Maria Balsamo
- Dipartimento di Scienze Biomolecolari Università di Urbino ‘Carlo Bo’ Urbino Italy
| | - Marco Ferraguti
- Dipartimento di Bioscienze Università degli Studi di Milano Milano Italy
| | - M. Antonio Todaro
- Dipartimento di Scienze della Vita Università di Modena‐Reggio Emilia Modena Italy
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Kieneke A, Todaro MA. Discovery of two ‘chimeric’ Gastrotricha and their systematic placement based on an integrative approach. Zool J Linn Soc 2020. [DOI: 10.1093/zoolinnean/zlaa117] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Sublittoral sand from the islands of Sardinia (Italy) and Flores (Azores) – separated by more than 3700 km linear distance and 8 years between two independent sampling campaigns – yielded conspicuous specimens of two bizarre, yet undescribed, species of the marine gastrotrich clade Macrodasyida. These gastrotrichs combine several character traits that were already known from two, non-related genera. Morphological data were carefully analysed and digitally documented, and nuclear and mitochondrial DNA sequences were used for phylogenetic inference. The results of these analyses claim for the erection of a new genus. Specimens of the new taxon have a body length of less than 400 µm and are characterized by a wide, funnel-shaped mouth opening shielded dorsally by an oral hood and possess a posterior peduncle that ends with a Y-shaped pair of appendages that carry the posterior adhesive tubes. Further tubes occur as anterior, ventrolateral and lateral series; the gonads are unpaired and there is a set of two accessory reproductive organs. Molecular phylogenetic analyses confirm the results of former studies and clearly place the new taxon in Thaumastodermatidae. We hereby propose the establishment of Chimaeradasys gen. nov. and describe C. oligotubulatus sp. nov. from the Azores and C. polytubulatus sp. nov. from Sardinia.
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Affiliation(s)
- Alexander Kieneke
- Senckenberg am Meer Wilhelmshaven, Deutsches Zentrum für Marine Biodiversitätsforschung, Wilhelmshaven, Germany
| | - M Antonio Todaro
- Department of Life Sciences, Università di Modena e Reggio Emilia, Modena, Italy
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Guidi L, Garraffoni ARS, Semprucci F, Balsamo M. Spermatozoa ultrastructure, spermatogenesis and reproductive system of Acanthodasys australis (Gastrotricha, Macrodasyida). ZOOL ANZ 2020. [DOI: 10.1016/j.jcz.2020.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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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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Guidi L, Todaro MA, Cesaroni L, Balsamo M. The unusual spermatozoa ofDolichodasyssp. (Gastrotricha, Macrodasyida). P BIOL SOC WASH 2017. [DOI: 10.2988/17-00009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
| | - M. Antonio Todaro
- (MAT) Dipartimento di Scienze della Vita, Università di Modena-Reggio Emilia, Modena, Italy
| | - Lucia Cesaroni
- (LG, LC, MB) Dipartimento di Scienze Biomolecolari, Università di Urbino ‘Carlo Bo', Italy,
| | - Maria Balsamo
- (LG, LC, MB) Dipartimento di Scienze Biomolecolari, Università di Urbino ‘Carlo Bo', Italy,
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Kieneke A, Ahlrichs WH, Arbizu PM. Morphology and function of reproductive organs inNeodasys chaetonotoideus(Gastrotricha:Neodasys) with a phylogenetic assessment of the reproductive system in Gastrotricha. ZOOL SCR 2009. [DOI: 10.1111/j.1463-6409.2009.00388.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Leasi F, Rothe BH, Schmidt-Rhaesa A, Todaro MA. The musculature of three species of gastrotrichs surveyed with confocal laser scanning microscopy (CLSM). ACTA ZOOL-STOCKHOLM 2006. [DOI: 10.1111/j.1463-6395.2006.00230.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Guidi L, Ferraguti M, Pierboni L, Balsamo M. Spermiogenesis and spermatozoa in Acanthodasys aculeatus (Gastrotricha, Macrodasyida): an ultrastructural study. ACTA ZOOL-STOCKHOLM 2002. [DOI: 10.1046/j.1463-6395.2003.00133.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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FISCHER UTE. Ultrastructure of penetrated spermatozoa, ovary, and oogenesis ofDactylopodoola baltica(Gastrotricha, Macrodasyida). INVERTEBR REPROD DEV 1996. [DOI: 10.1080/07924259.1996.9672496] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Fischer U. Ultrastructure of spermatogenesis and spermatozoa of Cephalodasys maximus (Gastrotricha, Macrodasyida). ZOOMORPHOLOGY 1994. [DOI: 10.1007/bf00416860] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Comparative ultrastructure of the gastrotrich pharynx and the evolution of myoepithelial foreguts in aschelminthes. ZOOMORPHOLOGY 1982. [DOI: 10.1007/bf00312295] [Citation(s) in RCA: 39] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Ultrastructure of the sensory palps ofTetranchyroderma papii (Gastrotricha, Macrodasyida). ACTA ACUST UNITED AC 1980. [DOI: 10.1007/bf00997905] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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EHLERS ULRICH. Drepanilla limophila gen.n., sp.n. (Turbellaria, Dalyellioida) aus dem H2S-Horizont des marinen Sandlückensystems. ZOOL SCR 1979. [DOI: 10.1111/j.1463-6409.1979.tb00616.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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RUPPERT EDWARDE. The Reproductive System of Gastrotrichs. III. Genital organs of Thaumastodermatinae subfam. n. and Diplodasyinae subfam. n. with discussion of reproduction in Macrodasyida. ZOOL SCR 1978. [DOI: 10.1111/j.1463-6409.1978.tb00592.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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