DOCSLIB.ORG

Mollusca: Gastropoda) from Isla Del Coco National Park, Costa Rica

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Mollusca: Gastropoda) from Isla Del Coco National Park, Costa Rica New records of heterobranch sea slugs (Mollusca: Gastropoda) from Isla del Coco National Park, Costa Rica Kimberly García-Méndez1 & Yolanda E. Camacho-García1,2,3,4 1. Escuela de Biología, Universidad de Costa Rica, 11501-2060 San José, Costa Rica; [email protected], [email protected] 2. Museo de Zoología, Universidad de Costa Rica, 11501-2060 San José, Costa Rica. 3. Centro de Estructuras Microscópicas (CIEMIC). 4. Centro de Investigación en Ciencias del Mar y Limnología (CIMAR). Received 12-VI-2015. Corrected 02-IX-2015. Accepted 08-IX-2015. Abstract: The molluscan fauna of Isla del Coco has recently been well documented, but the heterobranch sea slugs, traditionally called “opisthobranchs”, remain poorly known. We report 13 new records, increasing the total to 40 species. Of the 13 newly discovered species, the following species had not been previously recorded along the Pacific Costa Rican mainland: Berthella californica (Dall, 1900), Peltodoris rubra (Bergh, 1905), Dendrodoris albobrunnea Allan, 1933, Doriopsilla cf. spaldingi Valdés & Behrens, 1998, Glaucus cf. marginatus (Reinhardt & Bergh, 1864), and Flabellina sp. Additionally, we report Peltodoris rubra, previously known from the Indo-Pacific, for the first time in the Eastern Tropical Pacific. Rev. Biol. Trop. 64 (Suppl. 1): S205-S219. Epub 2016 Febrary 01. Key words: Heterobranchia, Nudipleura, Sacoglossa, Aplysiomorpha, opisthobranch, biodiversity, new records, Isla del Coco, Cocos Island. Among the marine species recently (Blainville 1821), Creseis clava (Rang, 1828, reported for Isla del Coco (also known as reported as Creseis acicula), Heliconoides Cocos Island), the mollusks represent the most inflatus (d’Orbigny, 1834, reported as Limaci- species-rich group with 490 species (Cortés, na inflata), Limacina bulimoides (d’Orbigny, 2012). Despite the high diversity, the hetero- 1834), and Limacina trochiformis (d’Orbigny, branch molluscan fauna, traditionally referred 1834), all specimens were non-living animals to as “opisthobranchs”, is poorly known. but the shells were collected from rock-shak- The first records of the Isla del Coco en substrate. The rest of the opisthobranchs opisthobranch fauna came from a molluscan collected by Mulliner were: two anaspide- checklist published by Montoya (1983). Mon- ans Dolabella auricularia (Lightfoot, 1786), toya reported the cephalaspidean Bulla punctu- and Dolabrifera dolabrifera (Rang, 1828), lata A. Adams in Sowerby, 1850, and four two side-gilled slugs, Pleurobranchus digueti pelagic pteropods: Diacavolinia longirostris Rochebrune, 1895 (reported as Pleurobranchus (Blainville 1821, reported as Cavolinia lon- areolatus Mörch, 1863), and Berthellina ilisima girostris), Diacria quadridentata (Blainville Marcus & Marcus, 1967 (reported as B. engeli 1821), Creseis virgula (Rang, 1828), and Heli- Gardiner, 1936). The umbrella shell Tylodina conoides inflatus (d’Orbigny, 1834, reported fungina Gabb 1865, and two sacoglossans as Limacina inflata). A decade later, Mulliner Julia thecaphora (Carpenter, 1857) and Elysia (1993), reported the pteropods Cavolinia unci- diomedea (Bergh, 1894) (reported as Tridachi- nata (d’Orbigny, 1834), Diacria quadridentata ella diomedea). Among the dorid nudibranchs, Rev. Biol. Trop. (Int. J. Trop. Biol. ISSN-0034-7744) Vol. 64 (Suppl. 1): S205-S219, February 2016 S205 he also reported Dendrodoris krebsii (Mörch, García-Méndez, & Troncoso (2013) report- 1863), which is probably D. fumata, and ed the two nudibranchs Onchidoris sp. and Felimida baumanni (Bertsch, 1970, reported as an aeolid identified as Aeolidioidea indet., Chromodoris baumanni Bertsch, 1970). which were collected from sandy bottoms Valdés, & Camacho-García (2004) report- around the Island. ed four species of cephalaspideans from Isla del All of the previous studies bring the num- Coco: Cylichnella defucnta (Baker & Hanna, ber of opisthobranchs of Isla del Coco to 27 1972, reported as Atys defuncta), Navanax species. The present study updates the knowl- aenigmaticus (Bergh, 1893), Cylichna ata- edge on this group. We include new reports, hualpa (Dall, 1908) and Volvulella catharia extended distributional ranges, morphological Dall, 1919. data and illustrate some of the more relevant Camacho-García (2009) reported 11 ben- species for Isla del Coco. thic opisthobranchs for Isla del Coco. Among the species reported that are not included in the MATERIALS AND METHODS previous studies mentioned above, are: Felimi- da sphoni Ev. Marcus, 1971 (reported as Chro- Study site: Isla del Coco National Park modoris sphoni), Phestilla lugubris (Bergh, (5º30’-5º34’ N - 87º01’-87º06’ W) is located 1870), and Tambja abdere (Farmer, 1978). approximately 550 km southwest of Cabo According to Carmona et al. (2014) Anteae- Blanco, Costa Rica, and about 630 km north- olidiella indica (Bergh, 1888), also reported in east of the Galápagos Islands (Lizano, 2001) Camacho-García (2009) corresponds to Ante- (Fig. 1). The Island is the only point above aeolidiella ireneae. Finally, Sibaja-Cordero, sea level of the Coco Volcanic Cordillera 87º03’ W The Wall Everest I. Manuelita I.Pájara Bahía Chatham Punta Ulloa Roca Sucia Punta Presidio Bahía Bahía Wafer Weston 5º33’ N Punta María Isla del Coco Nicaragua Caribbean Costa Sea Rica Bahía Yglesias Panamá Exclusive Econimic Zone 5º33’ N Isla del Coco 87º03’ W Pacic Ocean Fig. 1. Collecting sites at Isla del Coco National Park. S206 Rev. Biol. Trop. (Int. J. Trop. Biol. ISSN-0034-7744) Vol. 64 (Suppl. 1): S205-S219, February 2016 that originates in the Galápagos Hotspot in include specimens from deep waters that were the Eastern Tropical Pacific (Alvarado-Induni, filmed or photographed by the submersible 2000; Rojas, & Alvarado, 2012). The Island DeepSee (Cortés, & Blum, 2008), although just measures 4.4x7.6 km, with an area of 24 km2 a few of these records have a voucher specimen and the marine protected area is 1 997 km2 deposited at MZUCR. (Cortés, 2008). Sampling collection: Sampling was RESULTS carried out during the scientific Expeditions A total of 13 species were collected from CIMAR-MONITOREO-COCO-I and II, Isla del Coco, increasing the total known between 12-20 July 2013 and 23 February opisthobranch fauna to 40 species. Of the 13 05 March 2014, respectively. The specimens species, the following species represent new were collected in subtidal areas during daylight records for the Pacific Costa Rican mainland: hours at six different locations. These loca- Berthella californica (Dall, 1900), Peltodoris tions were surveyed by SCUBA diving to a depth of 15 m. rubra (Bergh, 1905), Dendrodoris albobrun- The specimens were obtained using indi- nea Allan, 1933, Doriopsilla cf. spaldingi Val- rect (collecting algae) and direct (collecting dés & Behrens, 1998, Glaucus cf. marginatus observed animals) methods. Specimens were (Reinhardt & Bergh, 1864), and Flabellina sp. brought to the laboratory on board the ship and The record of Peltodoris rubra from Isla del photographed alive, then relaxed in a solution Coco, represents an important range extension on the geographic distribution of this species, of MgCl2 with saltwater. After relaxation, the specimens were preserved in 95 % ethanol. as it has never been reported in the Eastern Some specimens were fixed in a Bouin’s solu- Tropical Pacific. tion and then preserved in 70 % ethanol for morphological studies. SYSTEMATICS The external characters such as color UMBRACULIDA Odhner, 1939 and morphology were used for identification Family Umbraculidae Dall, 1889 (1827) according to the literature available for the Umbraculum umbraculum (Lightfoot, 1786) region (Behrens, & Hermosillo, 2005; Cama- Fig. 2A cho-García, Gosliner, & Valdés, 2005; Her- mosillo, Behrens, & Ríos-Jara, 2006; Gosliner, Synonyms Behrens, & Valdés, 2008) and original descrip- Parmophorus patelloide Cantraine, 1835; tions (MacFarland, 1905; Valdés, & Behrens, 1998; Churchill, Valdés, & Foighil, 2014). All Patella ombracula Blainville, 1819; Patel- specimens were collected with a permit from la sinica Gmelin, 1791; Patella umbracu- the Sistema Nacional de Áreas de Conservación lum Lightfoot, 1786; Patella umbrellata (065-2013-SINAC, ACMIC-I-2013-0004), and Delle Chiaje, 1830; Umbraculum bermudense deposited at the Museo de Zoología, Universi- (Mörch, 1875); Umbraculum botanicum Hed- dad de Costa Rica (MZUCR). ley, 1923; Umbraculum chinense Schum- Additionally, we included specimens acher, 1817; Umbraculum indicum (Lamarck, already deposited at the Museo de Zoología 1819); Umbraculum mediterraneum (Lamarck, that were collected on different expeditions to 1819); Umbraculum ovalis (Carpenter, 1856); Isla del Coco carried out by the Santa Barbara Umbraculum plicatulum (Martens, 1881); Museum of Natural History and the Centro Umbraculum pulchrum Lin, 1981; Umbracu- de Investigación en Ciencias del Mar y Lim- lum sinicum (Gmelin, 1791); Umbrella indica nología (CIMAR), between 1997 (SBMNH), Lamarck, 1819; Umbrella lamarckiana Récluz, and 2007 to 2014 (CIMAR). Finally, we also 1843; Umbrella mediterranea Lamarck, 1819. Rev. Biol. Trop. (Int. J. Trop. Biol. ISSN-0034-7744) Vol. 64 (Suppl. 1): S205-S219, February 2016 S207 Material SACOGLOSSA Von Ihering, 1876 Family Plakobranchidae Gray, 1840 Isla del Coco National Park, Bahía Weston, Elysia sp. 14.07.2013, 1 specimen, 36 mm long by 27 mm Fig. 2B wide, 10 m deep, under a rock, leg. Jeffrey Sibaja-Cordero (MZUCR9822-01, photo). Synonyms Remarks Elysia sp. 2 Camacho-García et al., 2005: 65, upper photo. Elysia sp. 1 Kaiser, 2007: 50, The genus Umbraculum
Load more

Recommended publications
  • Sea Slugs – Divers' Favorites, Taxonomists' Problems
    Aquatic Science & Management, Vol. 1, No. 2, 100-110 (Oktober 2013) ISSN 2337-4403 Pascasarjana, Universitas Sam Ratulangi e-ISSN 2337-5000 http://ejournal.unsrat.ac.id/index.php/jasm/index jasm-pn00033 Sea slugs – divers’ favorites, taxonomists’ problems Siput laut – disukai para penyelam, masalah bagi para taksonom Kathe R. Jensen Zoological Museum (Natural History Museum of Denmark), Universitetsparken 15, DK-2100 Copenhagen Ø, Denmark E-mail: [email protected] Abstract: Sea slugs, or opisthobranch molluscs, are small, colorful, slow-moving, non-aggressive marine animals. This makes them highly photogenic and therefore favorites among divers. The highest diversity is found in tropical waters of the Indo-West Pacific region. Many illustrated guidebooks have been published, but a large proportion of species remain unidentified and possibly new to science. Lack of funding as well as expertise is characteristic for taxonomic research. Most taxonomists work in western countries whereas most biodiversity occurs in developing countries. Cladistic analysis and molecular studies have caused fundamental changes in opisthobranch classification as well as “instability” of scientific names. Collaboration between local and foreign scientists, amateurs and professionals, divers and academics can help discovering new species, but the success may be hampered by lack of funding as well as rigid regulations on collecting and exporting specimens for taxonomic research. Solutions to overcome these obstacles are presented. Keywords: mollusca; opisthobranchia; biodiversity; citizen science; taxonomic impediment Abstrak: Siput laut, atau moluska golongan opistobrancia, adalah hewan laut berukuran kecil, berwarna, bergerak lambat, dan tidak bersifat agresif. Alasan inilah yang membuat hewan ini sangat fotogenik dan menjadi favorit bagi para penyelam.
    [Show full text]
  • High Level Environmental Screening Study for Offshore Wind Farm Developments – Marine Habitats and Species Project
    High Level Environmental Screening Study for Offshore Wind Farm Developments – Marine Habitats and Species Project AEA Technology, Environment Contract: W/35/00632/00/00 For: The Department of Trade and Industry New & Renewable Energy Programme Report issued 30 August 2002 (Version with minor corrections 16 September 2002) Keith Hiscock, Harvey Tyler-Walters and Hugh Jones Reference: Hiscock, K., Tyler-Walters, H. & Jones, H. 2002. High Level Environmental Screening Study for Offshore Wind Farm Developments – Marine Habitats and Species Project. Report from the Marine Biological Association to The Department of Trade and Industry New & Renewable Energy Programme. (AEA Technology, Environment Contract: W/35/00632/00/00.) Correspondence: Dr. K. Hiscock, The Laboratory, Citadel Hill, Plymouth, PL1 2PB. [email protected] High level environmental screening study for offshore wind farm developments – marine habitats and species ii High level environmental screening study for offshore wind farm developments – marine habitats and species Title: High Level Environmental Screening Study for Offshore Wind Farm Developments – Marine Habitats and Species Project. Contract Report: W/35/00632/00/00. Client: Department of Trade and Industry (New & Renewable Energy Programme) Contract management: AEA Technology, Environment. Date of contract issue: 22/07/2002 Level of report issue: Final Confidentiality: Distribution at discretion of DTI before Consultation report published then no restriction. Distribution: Two copies and electronic file to DTI (Mr S. Payne, Offshore Renewables Planning). One copy to MBA library. Prepared by: Dr. K. Hiscock, Dr. H. Tyler-Walters & Hugh Jones Authorization: Project Director: Dr. Keith Hiscock Date: Signature: MBA Director: Prof. S. Hawkins Date: Signature: This report can be referred to as follows: Hiscock, K., Tyler-Walters, H.
    [Show full text]
  • Diversity of Norwegian Sea Slugs (Nudibranchia): New Species to Norwegian Coastal Waters and New Data on Distribution of Rare Species
    Fauna norvegica 2013 Vol. 32: 45-52. ISSN: 1502-4873 Diversity of Norwegian sea slugs (Nudibranchia): new species to Norwegian coastal waters and new data on distribution of rare species Jussi Evertsen1 and Torkild Bakken1 Evertsen J, Bakken T. 2013. Diversity of Norwegian sea slugs (Nudibranchia): new species to Norwegian coastal waters and new data on distribution of rare species. Fauna norvegica 32: 45-52. A total of 5 nudibranch species are reported from the Norwegian coast for the first time (Doridoxa ingolfiana, Goniodoris castanea, Onchidoris sparsa, Eubranchus rupium and Proctonotus mucro- niferus). In addition 10 species that can be considered rare in Norwegian waters are presented with new information (Lophodoris danielsseni, Onchidoris depressa, Palio nothus, Tritonia griegi, Tritonia lineata, Hero formosa, Janolus cristatus, Cumanotus beaumonti, Berghia norvegica and Calma glau- coides), in some cases with considerable changes to their distribution. These new results present an update to our previous extensive investigation of the nudibranch fauna of the Norwegian coast from 2005, which now totals 87 species. An increase in several new species to the Norwegian fauna and new records of rare species, some with considerable updates, in relatively few years results mainly from sampling effort and contributions by specialists on samples from poorly sampled areas. doi: 10.5324/fn.v31i0.1576. Received: 2012-12-02. Accepted: 2012-12-20. Published on paper and online: 2013-02-13. Keywords: Nudibranchia, Gastropoda, taxonomy, biogeography 1. Museum of Natural History and Archaeology, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway Corresponding author: Jussi Evertsen E-mail: [email protected] IntRODUCTION the main aims.
    [Show full text]
  • E Urban Sanctuary Algae and Marine Invertebrates of Ricketts Point Marine Sanctuary
    !e Urban Sanctuary Algae and Marine Invertebrates of Ricketts Point Marine Sanctuary Jessica Reeves & John Buckeridge Published by: Greypath Productions Marine Care Ricketts Point PO Box 7356, Beaumaris 3193 Copyright © 2012 Marine Care Ricketts Point !is work is copyright. Apart from any use permitted under the Copyright Act 1968, no part may be reproduced by any process without prior written permission of the publisher. Photographs remain copyright of the individual photographers listed. ISBN 978-0-9804483-5-1 Designed and typeset by Anthony Bright Edited by Alison Vaughan Printed by Hawker Brownlow Education Cheltenham, Victoria Cover photo: Rocky reef habitat at Ricketts Point Marine Sanctuary, David Reinhard Contents Introduction v Visiting the Sanctuary vii How to use this book viii Warning viii Habitat ix Depth x Distribution x Abundance xi Reference xi A note on nomenclature xii Acknowledgements xii Species descriptions 1 Algal key 116 Marine invertebrate key 116 Glossary 118 Further reading 120 Index 122 iii Figure 1: Ricketts Point Marine Sanctuary. !e intertidal zone rocky shore platform dominated by the brown alga Hormosira banksii. Photograph: John Buckeridge. iv Introduction Most Australians live near the sea – it is part of our national psyche. We exercise in it, explore it, relax by it, "sh in it – some even paint it – but most of us simply enjoy its changing modes and its fascinating beauty. Ricketts Point Marine Sanctuary comprises 115 hectares of protected marine environment, located o# Beaumaris in Melbourne’s southeast ("gs 1–2). !e sanctuary includes the coastal waters from Table Rock Point to Quiet Corner, from the high tide mark to approximately 400 metres o#shore.
    [Show full text]
  • Nudibranchia: Flabellinidae) from the Red and Arabian Seas
    Ruthenica, 2020, vol. 30, No. 4: 183-194. © Ruthenica, 2020 Published online October 1, 2020. http: ruthenica.net Molecular data and updated morphological description of Flabellina rubrolineata (Nudibranchia: Flabellinidae) from the Red and Arabian seas Irina A. EKIMOVA1,5, Tatiana I. ANTOKHINA2, Dimitry M. SCHEPETOV1,3,4 1Lomonosov Moscow State University, Leninskie Gory 1-12, 119234 Moscow, RUSSIA; 2A.N. Severtsov Institute of Ecology and Evolution, Leninskiy prosp. 33, 119071 Moscow, RUSSIA; 3N.K. Koltzov Institute of Developmental Biology RAS, Vavilov str. 26, 119334 Moscow, RUSSIA; 4Moscow Power Engineering Institute (MPEI, National Research University), 111250 Krasnokazarmennaya 14, Moscow, RUSSIA. 5Corresponding author; E-mail: [email protected] ABSTRACT. Flabellina rubrolineata was believed to have a wide distribution range, being reported from the Mediterranean Sea (non-native), the Red Sea, the Indian Ocean and adjacent seas, and the Indo-West Pacific and from Australia to Hawaii. In the present paper, we provide a redescription of Flabellina rubrolineata, based on specimens collected near the type locality of this species in the Red Sea. The morphology of this species was studied using anatomical dissections and scanning electron microscopy. To place this species in the phylogenetic framework and test the identity of other specimens of F. rubrolineata from the Indo-West Pacific we sequenced COI, H3, 16S and 28S gene fragments and obtained phylogenetic trees based on Bayesian and Maximum likelihood inferences. Our morphological and molecular results show a clear separation of F. rubrolineata from the Red Sea from its relatives in the Indo-West Pacific. We suggest that F. rubrolineata is restricted to only the Red Sea, the Arabian Sea and the Mediterranean Sea and to West Indian Ocean, while specimens from other regions belong to a complex of pseudocryptic species.
    [Show full text]
  • DEEP SEA LEBANON RESULTS of the 2016 EXPEDITION EXPLORING SUBMARINE CANYONS Towards Deep-Sea Conservation in Lebanon Project
    DEEP SEA LEBANON RESULTS OF THE 2016 EXPEDITION EXPLORING SUBMARINE CANYONS Towards Deep-Sea Conservation in Lebanon Project March 2018 DEEP SEA LEBANON RESULTS OF THE 2016 EXPEDITION EXPLORING SUBMARINE CANYONS Towards Deep-Sea Conservation in Lebanon Project Citation: Aguilar, R., García, S., Perry, A.L., Alvarez, H., Blanco, J., Bitar, G. 2018. 2016 Deep-sea Lebanon Expedition: Exploring Submarine Canyons. Oceana, Madrid. 94 p. DOI: 10.31230/osf.io/34cb9 Based on an official request from Lebanon’s Ministry of Environment back in 2013, Oceana has planned and carried out an expedition to survey Lebanese deep-sea canyons and escarpments. Cover: Cerianthus membranaceus © OCEANA All photos are © OCEANA Index 06 Introduction 11 Methods 16 Results 44 Areas 12 Rov surveys 16 Habitat types 44 Tarablus/Batroun 14 Infaunal surveys 16 Coralligenous habitat 44 Jounieh 14 Oceanographic and rhodolith/maërl 45 St. George beds measurements 46 Beirut 19 Sandy bottoms 15 Data analyses 46 Sayniq 15 Collaborations 20 Sandy-muddy bottoms 20 Rocky bottoms 22 Canyon heads 22 Bathyal muds 24 Species 27 Fishes 29 Crustaceans 30 Echinoderms 31 Cnidarians 36 Sponges 38 Molluscs 40 Bryozoans 40 Brachiopods 42 Tunicates 42 Annelids 42 Foraminifera 42 Algae | Deep sea Lebanon OCEANA 47 Human 50 Discussion and 68 Annex 1 85 Annex 2 impacts conclusions 68 Table A1. List of 85 Methodology for 47 Marine litter 51 Main expedition species identified assesing relative 49 Fisheries findings 84 Table A2. List conservation interest of 49 Other observations 52 Key community of threatened types and their species identified survey areas ecological importanc 84 Figure A1.
    [Show full text]
  • Distribution Patterns of Pelagic Gastropods at the Cape Verde Islands Holger Ossenbrügger
    Distribution patterns of pelagic gastropods at the Cape Verde Islands Holger Ossenbrügger* Semester thesis 2010 *GEOMAR | Helmholtz Centre for Ocean Research Kiel Marine Ecology | Evolutionary Ecology of Marine Fishes Düsternbrooker Weg 20 | 24105 Kiel | Germany Contact: [email protected] Contents 1. Introduction . .2 1.1. Pteropods . 2 1.2. Heteropods . 3 1.3. Hydrography . 4 2. Material and Methods . 5 3. Results and Discussion . 7 3.1. Pteropods . 7 3.1.1. Species Composition . 7 3.1.2. Spatial Density Distribution near Senghor Seamount . .. 9 3.1.3. Diel Vertical Migration . 11 3.2. Heteropods . 17 3.2.1. Species Composition . .17 3.2.2. Spatial Density Distribution near Senghor Seamount . .17 3.2.3. Diel Vertical Migration . 18 4. Summary and directions for future research . 19 References . 20 Acknowledgements . 21 Attachment . .22 1. Introduction 1.1. Pteropods Pteropods belong to the phylum of the Mollusca. They are part of the class Gastropoda and located in the order Ophistobranchia. The pteropods are divided into the orders Thecosomata and Gymnosomata. They are small to medium sized animals, ranging from little more than 1mm for example in many members of the Genus Limacina to larger species such as Cymbulia peroni, which reaches a pseudoconch length of 65mm. The mostly shell bearing Thecosomata are known from about 74 recent species worldwide and are divided into five families. The Limacinidae are small gastropods with a sinistrally coiled shell; they can completely retract their body into the shell. Seven recent species of the genus Limacina are known. The Cavoliniidae is the largest of the thecosomate families with about 47 species with quite unusually formed shells.
    [Show full text]
  • Biodiversity Journal, 2020, 11 (4): 861–870
    Biodiversity Journal, 2020, 11 (4): 861–870 https://doi.org/10.31396/Biodiv.Jour.2020.11.4.861.870 The biodiversity of the marine Heterobranchia fauna along the central-eastern coast of Sicily, Ionian Sea Andrea Lombardo* & Giuliana Marletta Department of Biological, Geological and Environmental Sciences - Section of Animal Biology, University of Catania, via Androne 81, 95124 Catania, Italy *Corresponding author: [email protected] ABSTRACT The first updated list of the marine Heterobranchia for the central-eastern coast of Sicily (Italy) is here reported. This study was carried out, through a total of 271 scuba dives, from 2017 to the beginning of 2020 in four sites located along the Ionian coasts of Sicily: Catania, Aci Trezza, Santa Maria La Scala and Santa Tecla. Through a photographic data collection, 95 taxa, representing 17.27% of all Mediterranean marine Heterobranchia, were reported. The order with the highest number of found species was that of Nudibranchia. Among the study areas, Catania, Santa Maria La Scala and Santa Tecla had not a remarkable difference in the number of species, while Aci Trezza had the lowest number of species. Moreover, among the 95 taxa, four species considered rare and six non-indigenous species have been recorded. Since the presence of a high diversity of sea slugs in a relatively small area, the central-eastern coast of Sicily could be considered a zone of high biodiversity for the marine Heterobranchia fauna. KEY WORDS diversity; marine Heterobranchia; Mediterranean Sea; sea slugs; species list. Received 08.07.2020; accepted 08.10.2020; published online 20.11.2020 INTRODUCTION more researches were carried out (Cattaneo Vietti & Chemello, 1987).
    [Show full text]
  • Phyllodesmium Tuberculatum Tritonia Sp. 3 Doto Sp. H Facelina Sp. A
    Austraeolis stearnsi Hermosita hakunamatata Learchis poica Phidiana militaris Protaeolidiella juliae Moridilla brockii Noumeaella sp. 4 Cerberilla bernadettae Cerberilla sp. A Noumeaella sp. B Facelina sp. A Tritonia nilsodhneri Tritoniella belli Flabellina babai Notaeolidia depressa Tethys fimbria Armina californica Tritonia sp. F Tritonia antarctica Tritonia pickensi Leminda millecra Marianina rosea Scyllaea pelagica Pteraeolidia ianthina Limenandra sp. B 1 1 Limenandra fusiformis Limenandra sp. C 0.99 Limenandra sp. A Baeolidia nodosa 1 Spurilla sargassicola 0.82 Spurilla neapolitana 0.75 Spurilla sp. A Spurilla braziliana 1 Protaeolidiella atra Caloria indica 1 Aeolidia sp. B 0.92 Aeolidia sp. A Aeolidia papillosa 1 Glaucus atlanticus Glaucus marginatus 1 Tritonia diomedea Tritonia festiva 0.99 Hancockia californica 1 Hancockia uncinata Hancockia cf. uncinata 0.99 Spurilla creutzbergi 1 Berghia verrucicornis 0.98 Berghia coerulescens 0.91 Aeolidiella stephanieae 1 Berghia rissodominguezi 0.9 Berghia columbina Berghia sp. A 0.99 Aeolidiella sanguinea Aeolidiella alderi 0.99 Phidiana hiltoni Phidiana lynceus Armina lovenii 0.98 Armina sp. 3 Armina sp. 9 Dermatobranchus semistriatus Dermatobranchus sp. A 1 Armina semperi 0.89 Armina sp. 0.98 Dermatobranchus sp. 12 1 Dermatobranchus sp. 7 0.86 Dermatobranchus sp. 17 Dermatobranchus pustulosus 0.72 Dermatobranchus sp. 16 Dermatobranchus sp. 21 0.97 Dirona albolineata Charcotia granulosa 0.95 Baeolidia moebii 0.85 Aeolidiopsis ransoni 0.75 Baeolidia sp. A 1 Berghia salaamica 0.98 0.51 Berghia cf. salaamica 0.97 Baeolidia sp. B 0.94 Baeolidia japonica Baeolidia sp. C 0.95 Noumeaella sp. 3 Noumeaella rehderi 0.91 Cerberilla sp. B 0.57 Cerberilla sp.
    [Show full text]
  • Nudibranch Range Shifts Associated with the 2014 Warm Anomaly in the Northeast Pacific
    Bulletin of the Southern California Academy of Sciences Volume 115 | Issue 1 Article 2 4-26-2016 Nudibranch Range Shifts associated with the 2014 Warm Anomaly in the Northeast Pacific Jeffrey HR Goddard University of California, Santa Barbara, [email protected] Nancy Treneman University of Oregon William E. Pence Douglas E. Mason California High School Phillip M. Dobry See next page for additional authors Follow this and additional works at: https://scholar.oxy.edu/scas Part of the Marine Biology Commons, Population Biology Commons, and the Zoology Commons Recommended Citation Goddard, Jeffrey HR; Treneman, Nancy; Pence, William E.; Mason, Douglas E.; Dobry, Phillip M.; Green, Brenna; and Hoover, Craig (2016) "Nudibranch Range Shifts associated with the 2014 Warm Anomaly in the Northeast Pacific," Bulletin of the Southern California Academy of Sciences: Vol. 115: Iss. 1. Available at: https://scholar.oxy.edu/scas/vol115/iss1/2 This Article is brought to you for free and open access by OxyScholar. It has been accepted for inclusion in Bulletin of the Southern California Academy of Sciences by an authorized editor of OxyScholar. For more information, please contact [email protected]. Nudibranch Range Shifts associated with the 2014 Warm Anomaly in the Northeast Pacific Cover Page Footnote We thank Will and Ziggy Goddard for their expert assistance in the field, Jackie Sones and Eric Sanford of the Bodega Marine Laboratory for sharing their observations and knowledge of the intertidal fauna of Bodega Head and Sonoma County, and David Anderson of the National Park Service and Richard Emlet of the University of Oregon for sharing their respective observations of Okenia rosacea in northern California and southern Oregon.
    [Show full text]
  • Ringiculid Bubble Snails Recovered As the Sister Group to Sea Slugs
    www.nature.com/scientificreports OPEN Ringiculid bubble snails recovered as the sister group to sea slugs (Nudipleura) Received: 13 May 2016 Yasunori Kano1, Bastian Brenzinger2,3, Alexander Nützel4, Nerida G. Wilson5 & Accepted: 08 July 2016 Michael Schrödl2,3 Published: 08 August 2016 Euthyneuran gastropods represent one of the most diverse lineages in Mollusca (with over 30,000 species), play significant ecological roles in aquatic and terrestrial environments and affect many aspects of human life. However, our understanding of their evolutionary relationships remains incomplete due to missing data for key phylogenetic lineages. The present study integrates such a neglected, ancient snail family Ringiculidae into a molecular systematics of Euthyneura for the first time, and is supplemented by the first microanatomical data. Surprisingly, both molecular and morphological features present compelling evidence for the common ancestry of ringiculid snails with the highly dissimilar Nudipleura—the most species-rich and well-known taxon of sea slugs (nudibranchs and pleurobranchoids). A new taxon name Ringipleura is proposed here for these long-lost sisters, as one of three major euthyneuran clades with late Palaeozoic origins, along with Acteonacea (Acteonoidea + Rissoelloidea) and Tectipleura (Euopisthobranchia + Panpulmonata). The early Euthyneura are suggested to be at least temporary burrowers with a characteristic ‘bubble’ shell, hypertrophied foot and headshield as exemplified by many extant subtaxa with an infaunal mode of life, while the expansion of the mantle might have triggered the explosive Mesozoic radiation of the clade into diverse ecological niches. The traditional gastropod subclass Euthyneura is a highly diverse clade of snails and slugs with at least 30,000 living species1,2.
    [Show full text]
  • 61-68, 2001 Genus Doriopsilla Bergh (Gastropoda
    BASTERIA, 65: 61-68, 2001 A new of Nudibranchiaofthe species genusDoriopsilla Bergh (Gastropoda, Opisthobranchia) from SouthAfrica Antonio+S. Perrone Via Palermo 7, 73014 Gallipoli, Italy A of the nudibranch new species genus Doriopsilla Bergh, 1880,D. debruini, is described from Hout South is Bay, Africa. The new species distinguished externally by a number oflarge dark brown the of sheaths and notch patches, presence high rhinophore a very deep on the ante- rior foot. the of the is for the with the Internally arrangement organs typical genus presence of female and flat Differences between the a large gland a prostatic gland. known species are tabulated. Key words: Opisthobranchia, Nudibranchia, Dendrodorididae, Doriopsilla, South Africa, taxonomy. INTRODUCTION The genus Doriopsilla (family Dendrodorididae) was established by Bergh (1880) and the type species, Doriopsilla areolata, was described from the MediterraneanSea. Further known from Doriopsilla species are different seas (Alder & Hancock, 1864; D'Oliveira, 1895; Baba, 1949; Marcus, 1961; Burn, 1962, 1989; Marcus & Marcus, 1967; Edmunds, 1968; Meyer, 1977; Valdes & Behrens, 1998; Gosliner, Schaefer & Millen, 1999, etc.). Some ascribed Dendrodoris Doriopsilla species were to (Allan, 1933; Pruvot-Fol, 1951, 1954; Behrens, 1980, 1991; McDonald & Nybakken, 1981; McDonald, 1983; Baba, 1933, since 1949) the two are similar. the was genera superficially Recently genus Doriopsilla reviewed Valdes but (Valdes, 1996; & Ortea, 1997) the numberof valid species is uncer- tain. Four species are known from South Africa (Bergh, 1907; Gosliner, 1987) and only of these named. One of the unnamed South African two are species shows the typical habitus of Doriopsilla but with a peculiar pattern consisting of large darkbrown patches brown notal The on a pale background.
    [Show full text]