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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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Bosco I, Lourenço AP, Guidi L, Balsamo M, Hochberg R, Garraffoni AR. Integrative description of a new species of Acanthodasys Remane, 1927 (Gastrotricha, Macrodasyida, Thaumastodermatidae) based on four distinct morphological techniques and molecular data. ZOOL ANZ 2020. [DOI: 10.1016/j.jcz.2020.03.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Zotto MD, Leasi F, Todaro MA. A new species of Turbanellidae (Gastrotricha, Macrodasyida) from Jamaica, with a key to species of Paraturbanella. Zookeys 2018:105-119. [PMID: 29674856 PMCID: PMC5904343 DOI: 10.3897/zookeys.734.23023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 01/17/2018] [Indexed: 11/12/2022] Open
Abstract
The study falls within the framework of a wider research programme aimed at investigating the gastrotrich diversity of the Tropical North-Western Atlantic (TNWA). A new macrodasyidan gastrotrich is described from fine-medium sand collected at Duncans Bay, Jamaica. The description is based on observations carried out on living specimens using differential interference contrast microscopy. Paraturbanellaxaymacanasp. n., the third gastrotrich taxon reported from Jamaica, is a mid-sized species, up to 564 μm long, with a feeble peribuccal swelling. The most obvious autapomorphic traits pertain to the testes and the male pore, both of which are located approximately at mid body, rather than at- or near the pharyngo-intestinal junction as occur in the other species of the genus. Additional differences with congeners are discussed and a key to the Paraturbanella species is provided, in the hope it will be useful to both gastrotrich experts and marine ecologists who discover these microscopic metazoans during their research.
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Affiliation(s)
- Matteo Dal Zotto
- Department of Life Sciences, University of Modena and Reggio Emilia, via Campi 213/d, I-41125 Modena, Italy.,Consortium for the Interuniversity Center of Marine Biology and Applied Ecology, viale N. Sauro 4, I-57128 Livorno, Italy
| | - Francesca Leasi
- Department of Invertebrate Zoology, Smithsonian National Museum of Natural History, 10th St. & Constitution Ave NW, Washington, D.C. 20560, United States
| | - M Antonio Todaro
- Department of Life Sciences, University of Modena and Reggio Emilia, via Campi 213/d, I-41125 Modena, Italy
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Garraffoni ARS, Balsamo M. Is the ubiquitous distribution real for marine gastrotrichs? Detection of areas of endemism using Parsimony Analysis of Endemicity (PAE). P BIOL SOC WASH 2017. [DOI: 10.2988/17-00011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- André R. S. Garraffoni
- (ARSG) Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas, 13083-970, Campinas, SP, Brazil,
| | - Maria Balsamo
- (MB) Dipartimento di Scienze Biomolecolari, Campus Scientifico, Via Ca' le Suore, 2, Urbino, Italy
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Araujo TQ, Hochberg R. Description of a new species ofThaumastoderma(Gastrotricha: Macrodasyida: Thaumastodermatidae) from Belize and Tobago. P BIOL SOC WASH 2017. [DOI: 10.2988/17-00003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Thiago Quintão Araujo
- (TQA) Pós-Graduação em Zoologia, Universidade Federal de Minas Gerais. Av. Antônio Carlos, 6627, CEP 31270-901 Belo Horizonte, Minas Gerais, Brazil,
| | - Rick Hochberg
- (RH) University of Massachusetts Lowell, One University Ave., Lowell, Massachusetts 01854, U.S.A.,
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Todaro MA, Leasi F, Hochberg R. A new species, genus and family of marine Gastrotricha from Jamaica, with a phylogenetic analysis of Macrodasyida based on molecular data. SYST BIODIVERS 2014. [DOI: 10.1080/14772000.2014.942718] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Hochberg R, Atherton S, Gross V. A new species of sublittoral marine gastrotrich, Lepidodasys ligni sp. n. (Macrodasyida, Lepidodasyidae), from the Atlantic coast of Florida. Zookeys 2013:1-12. [PMID: 23794849 PMCID: PMC3677386 DOI: 10.3897/zookeys.289.4764] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2013] [Accepted: 03/20/2013] [Indexed: 11/24/2022] Open
Abstract
A new species of Lepidodasys is described from sublittoral sandy sediments off the Atlantic coast of Florida. Lepidodasys lignisp. n. is a small species (≤ 450 µm) with a crossed-helical pattern of small, non-keeled, non-imbricated scales on the dorsal and lateral body surfaces, two columns of ventral, interciliary scales that form a herringbone pattern, and a series of anterior, lateral, dorsal and posterior adhesive tubes. Similar to Lepidodasys castoroides from the Faroe Islands, the new species possesses a caudal constriction that demarcates the posterior end containing the caudal organ. The frontal organ lies within the posterior constriction, which is heavily invested with somatic circular muscles. These muscles are also present throughout the trunk and represent a novel condition for species of Lepidodasys,which were previously considered to lack somatic circular muscles. Posterior of the caudal constriction is a large, barrel-shaped caudal organ that is wrapped in a series of interdigitating, spindle-shaped, incomplete circular muscle fibers. The caudal organ contains a sclerotized central canal, but the absence of distal cuticular endpieces distinguishes the new species from its morphologically similar congener, Lepidodasys castoroides.
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Affiliation(s)
- Rick Hochberg
- University of Massachusetts Lowell, One University Avenue, Lowell, MA 01854 USA, 01.978.934.2885
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Curini-Galletti M, Artois T, Delogu V, De Smet WH, Fontaneto D, Jondelius U, Leasi F, Martínez A, Meyer-Wachsmuth I, Nilsson KS, Tongiorgi P, Worsaae K, Todaro MA. Patterns of diversity in soft-bodied meiofauna: dispersal ability and body size matter. PLoS One 2012; 7:e33801. [PMID: 22457790 PMCID: PMC3311549 DOI: 10.1371/journal.pone.0033801] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Accepted: 02/17/2012] [Indexed: 11/30/2022] Open
Abstract
Background Biogeographical and macroecological principles are derived from patterns of distribution in large organisms, whereas microscopic ones have often been considered uninteresting, because of their supposed wide distribution. Here, after reporting the results of an intensive faunistic survey of marine microscopic animals (meiofauna) in Northern Sardinia, we test for the effect of body size, dispersal ability, and habitat features on the patterns of distribution of several groups. Methodology/Principal Findings As a dataset we use the results of a workshop held at La Maddalena (Sardinia, Italy) in September 2010, aimed at studying selected taxa of soft-bodied meiofauna (Acoela, Annelida, Gastrotricha, Nemertodermatida, Platyhelminthes and Rotifera), in conjunction with data on the same taxa obtained during a previous workshop hosted at Tjärnö (Western Sweden) in September 2007. Using linear mixed effects models and model averaging while accounting for sampling bias and potential pseudoreplication, we found evidence that: (1) meiofaunal groups with more restricted distribution are the ones with low dispersal potential; (2) meiofaunal groups with higher probability of finding new species for science are the ones with low dispersal potential; (3) the proportion of the global species pool of each meiofaunal group present in each area at the regional scale is negatively related to body size, and positively related to their occurrence in the endobenthic habitat. Conclusion/Significance Our macroecological analysis of meiofauna, in the framework of the ubiquity hypothesis for microscopic organisms, indicates that not only body size but mostly dispersal ability and also occurrence in the endobenthic habitat are important correlates of diversity for these understudied animals, with different importance at different spatial scales. Furthermore, since the Western Mediterranean is one of the best-studied areas in the world, the large number of undescribed species (37%) highlights that the census of marine meiofauna is still very far from being complete.
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Affiliation(s)
- Marco Curini-Galletti
- Dipartimento di Zoologia e Genetica Evoluzionistica, Università di Sassari, Sassari, Italy
| | - Tom Artois
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Valentina Delogu
- Dipartimento di Zoologia e Genetica Evoluzionistica, Università di Sassari, Sassari, Italy
| | | | - Diego Fontaneto
- Department of Invertebrate Zoology, Swedish Museum of Natural History, Stockholm, Sweden
- Division of Biology, Imperial College London, Ascot, United Kingdom
| | - Ulf Jondelius
- Department of Invertebrate Zoology, Swedish Museum of Natural History, Stockholm, Sweden
| | - Francesca Leasi
- Division of Biology, Imperial College London, Ascot, United Kingdom
- Dipartimento di Biologia, Universtità di Modena e Reggio Emilia, Modena, Italy
| | | | - Inga Meyer-Wachsmuth
- Department of Invertebrate Zoology, Swedish Museum of Natural History, Stockholm, Sweden
| | - Karin Sara Nilsson
- Department of Invertebrate Zoology, Swedish Museum of Natural History, Stockholm, Sweden
| | - Paolo Tongiorgi
- Dipartimento di Biologia, Universtità di Modena e Reggio Emilia, Modena, Italy
| | - Katrine Worsaae
- Marine Biological Section, University of Copenhagen, Helsingør, Denmark
| | - M. Antonio Todaro
- Dipartimento di Biologia, Universtità di Modena e Reggio Emilia, Modena, Italy
- * E-mail:
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A new species of Lepidodasys (Gastrotricha, Macrodasyida) from Panama with a description of its peptidergic nervous system using CLSM, anti-FMRFamide and anti-SCPB. ZOOL ANZ 2011. [DOI: 10.1016/j.jcz.2010.12.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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