Pagurus Bernhardus (L.)—An Introduction to the Natural History of Hermit Crabs
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Taxonomic Study of the Pagurus Forbesii "Complex" (Crustacea
Taxonomic study of the Pagurus forbesii "complex" (Crustacea: Decapoda: Paguridae). Description of Pagurus pseudosculptimanus sp. nov. from Alborán Sea (Southern Spain, Western Mediterranean Sea). GARCÍA MUÑOZ J.E.1, CUESTA J.A.2 & GARCÍA RASO J.E.1* 1 Dept. Biología Animal, Fac. Ciencias, Univ. Málaga, Campus de Teatinos s/n, 29071 Málaga, Spain. 2 Inst. Ciencias Marinas de Andalucía (CSIC), Av. República Saharaui, 2, 11519 Puerto Real, Cádiz, Spain. * Corresponding author - e-mail address: [email protected] ABSTRACT The study of hermit crabs from Alboran Sea has allowed recognition of two different morphological forms under what had been understood as Pagurus forbesii. Based on morphological observations with various species of Pagurus, and molecular studies, a new species is defined and described as P. pseudosculptimanus. An overview on species of Pagurus from the eastern Atlantic and Mediterranean Sea is provided. Key words: Pagurus, new species, Mediterranean, eastern Atlantic. 1 Introduction More than 170 species from around the world are currently assigned to the genus Pagurus Fabricius, 1775 (Lemaitre and Cruz Castaño 2004; Mantelatto et al. 2009; McLaughlin 2003, McLaughlin et al. 2010). This genus is complex because of there is high morphological variability and similarity among some species, and has been divided in groups (e.g. Lemaitre and Cruz Castaño 2004 for eastern Pacific species; Ingle, 1985, for European species) with difficulty (Ayón-Parente and Hendrickx 2012). This difficulty has lead to taxonomic problems, although molecular techniques have been recently used to elucidate some species (Mantelatto et al. 2009; Da Silva et al. 2011). Thirteen species are present in eastern Atlantic (European and the adjacent African waters) (Ingle 1993; Udekem d'Acoz 1999; Froglia, 2010, MarBEL Data System - Türkay 2012, García Raso et al., in press) but only nine of these (the first ones mentioned below) have been cited in the Mediterranean Sea, all of them are present in the study area (Alboran Sea, southern Spain). -
Appendix to Taxonomic Revision of Leopold and Rudolf Blaschkas' Glass Models of Invertebrates 1888 Catalogue, with Correction
http://www.natsca.org Journal of Natural Science Collections Title: Appendix to Taxonomic revision of Leopold and Rudolf Blaschkas’ Glass Models of Invertebrates 1888 Catalogue, with correction of authorities Author(s): Callaghan, E., Egger, B., Doyle, H., & E. G. Reynaud Source: Callaghan, E., Egger, B., Doyle, H., & E. G. Reynaud. (2020). Appendix to Taxonomic revision of Leopold and Rudolf Blaschkas’ Glass Models of Invertebrates 1888 Catalogue, with correction of authorities. Journal of Natural Science Collections, Volume 7, . URL: http://www.natsca.org/article/2587 NatSCA supports open access publication as part of its mission is to promote and support natural science collections. NatSCA uses the Creative Commons Attribution License (CCAL) http://creativecommons.org/licenses/by/2.5/ for all works we publish. Under CCAL authors retain ownership of the copyright for their article, but authors allow anyone to download, reuse, reprint, modify, distribute, and/or copy articles in NatSCA publications, so long as the original authors and source are cited. TABLE 3 – Callaghan et al. WARD AUTHORITY TAXONOMY ORIGINAL SPECIES NAME REVISED SPECIES NAME REVISED AUTHORITY N° (Ward Catalogue 1888) Coelenterata Anthozoa Alcyonaria 1 Alcyonium digitatum Linnaeus, 1758 2 Alcyonium palmatum Pallas, 1766 3 Alcyonium stellatum Milne-Edwards [?] Sarcophyton stellatum Kükenthal, 1910 4 Anthelia glauca Savigny Lamarck, 1816 5 Corallium rubrum Lamarck Linnaeus, 1758 6 Gorgonia verrucosa Pallas, 1766 [?] Eunicella verrucosa 7 Kophobelemon (Umbellularia) stelliferum -
A New Species of the Genus Pagurus Fabricius, 1775 (Crustacea: Decapoda: Anomura: Paguridae) from the Ryukyu Islands, Southwestern Japan*
Zootaxa 3367: 155–164 (2012) ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ Article ZOOTAXA Copyright © 2012 · Magnolia Press ISSN 1175-5334 (online edition) A new species of the genus Pagurus Fabricius, 1775 (Crustacea: Decapoda: Anomura: Paguridae) from the Ryukyu Islands, southwestern Japan* MASAYUKI OSAWA Research Center for Coastal Lagoon Environments, Shimane University, 1060 Nishikawatsu-cho, Matsue, Shimane, 690-8504 Japan. E-mail: [email protected] * In: Naruse, T., Chan, T.-Y., Tan, H.H., Ahyong, S.T. & Reimer, J.D. (2012) Scientific Results of the Marine Biodiversity Expedition — KUMEJIMA 2009. Zootaxa, 3367, 1–280. Abstract A new species of pagurid hermit crab, Pagurus tabataorum n. sp., is described from Kume Island, Ryukyu Islands, southwestern Japan. It appears closest to P. capsularis McLaughlin, 1997, known from the Tanimbar Islands in Indonesia, but is readily distinguished by the possession of numerous arcuate or sinuous, transverse scutes on the dorsal surface of the chelae. Distributional patterns of species of the genus Pagurus Fabricius, 1775, hitherto recorded from the Ryukyu Islands are briefly reviewed. Key words: Crustacea, Decapoda, Anomura, Pagurus, new species, Ryukyus Introduction The KUMEJIMA 2009 Expedition was an extensive survey on the coastal marine fauna around Kume Island, Ryukyu Islands, southwestern Japan. Dredgings and trawlings during the expedition were resulted in the findings of many species of decapod crustaceans including an unusual hermit crab species of the genus Pagurus Fabricius, 1775. The species is herein described as new to science and illustrated in detail. The holotype of the new species is deposited in the Ryukyu University Museum, Fujukan (RUMF), Okinawa. -
Geographic Varia Tion in Size at Maturity in Brachyuran Crabs
BULLETIN OF MARINE SCIENCE, 45(2): 356-368, 1989 GEOGRAPHIC VARIA TION IN SIZE AT MATURITY IN BRACHYURAN CRABS Anson H. Hines ABSTRACT Geographic variation in size of sexually mature females was compared in five species of crabs at sites spanning about 10 degrees of latitude along the east and west coasts of North America. Populations were sampled along the west coast at six sites for Pachygrapsuscrassipes, four sites for Hernigrapsus nudus, eight sites for H. orgenensis, and two sites for Scyra acutifrons, and along the east coast at eight sites for Panopeus herbstii. Four of the five species showed significant geographic variation in size at onset of maturity, mean size, and size frequency distribution. P. herbstii and P. crassipes exhibited latitudinal variations and marked changes in population structure of mature females at biogeographic boundaries; P. herbstii matured at larger sizes at latitudes below Cape Hatteras; while P. crassipes matured at smaller sizes below Point Conception. H. nudus showed variation in the size distribution of mature females, but little variation in size at onset of maturity. For H. oregonensis and S. acutifrons, size at maturity varied on a local scale among neighboring populations. For S. acutifrons, a difference of about seven molts before the terminal molt at puberty was deduced to produce the observed variation in maturity. Its molt increment percentage was constant across all sizes of crabs and did not differ between two populations with disparate size structures. For H. oregonensis variation in molt increment and in the number of molts appears to account for differences in size at maturity among populations. -
Decapoda: Paguridae) from French Polynesia, with Comments on Carcinization in the Anomura
Zootaxa 3722 (2): 283–300 ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ Article ZOOTAXA Copyright © 2013 Magnolia Press ISSN 1175-5334 (online edition) http://dx.doi.org/10.11646/zootaxa.3722.2.9 http://zoobank.org/urn:lsid:zoobank.org:pub:9D347B8C-0BCE-47A7-99DF-DBA9A38A4F44 A remarkable new crab-like hermit crab (Decapoda: Paguridae) from French Polynesia, with comments on carcinization in the Anomura ARTHUR ANKER1,2 & GUSTAV PAULAY1 1Florida Museum of Natural History, University of Florida, Gainesville, FL, 32611-7800, U.S.A. 2Department of Biological Sciences, National University of Singapore, Lower Kent Ridge Road, 119260, Singapore Abstract Patagurus rex gen. et sp. nov., a deep-water pagurid hermit crab, is described and illustrated based on a single specimen dredged from 400 m off Moorea, Society Islands, French Polynesia. Patagurus is characterized by a subtriangular, vault- ed, calcified carapace, with large, wing-like lateral processes, and is closely related to two other atypical pagurid genera, Porcellanopagurus Filhol, 1885 and Solitariopagurus Türkay, 1986. The broad, fully calcified carapace, calcified bran- chiostegites, as well as broad and rigidly articulated thoracic sternites make this remarkable animal one of the most crab- like hermit crabs. Patagurus rex carries small bivalve shells to protect its greatly reduced pleon. Carcinization pathways among asymmetrical hermit crabs and other anomurans are briefly reviewed and discussed. Key words: Decapoda, Paguridae, hermit crab, deep-water, carcinization, Porcellanopagurus, Solitariopagurus, Indo- West Pacific Introduction Carcinization, or development of a crab-like body plan, is a term describing an important evolutionary tendency within the large crustacean order Decapoda. The term “carcinization” was coined by Borradaile (1916) with reference to crab-like modifications in the hermit crab genus Porcellanopagurus Filhol, 1885 (Paguridae). -
Diversity and Life-Cycle Analysis of Pacific Ocean Zooplankton by Video Microscopy and DNA Barcoding: Crustacea
Journal of Aquaculture & Marine Biology Research Article Open Access Diversity and life-cycle analysis of Pacific Ocean zooplankton by video microscopy and DNA barcoding: Crustacea Abstract Volume 10 Issue 3 - 2021 Determining the DNA sequencing of a small element in the mitochondrial DNA (DNA Peter Bryant,1 Timothy Arehart2 barcoding) makes it possible to easily identify individuals of different larval stages of 1Department of Developmental and Cell Biology, University of marine crustaceans without the need for laboratory rearing. It can also be used to construct California, USA taxonomic trees, although it is not yet clear to what extent this barcode-based taxonomy 2Crystal Cove Conservancy, Newport Coast, CA, USA reflects more traditional morphological or molecular taxonomy. Collections of zooplankton were made using conventional plankton nets in Newport Bay and the Pacific Ocean near Correspondence: Peter Bryant, Department of Newport Beach, California (Lat. 33.628342, Long. -117.927933) between May 2013 and Developmental and Cell Biology, University of California, USA, January 2020, and individual crustacean specimens were documented by video microscopy. Email Adult crustaceans were collected from solid substrates in the same areas. Specimens were preserved in ethanol and sent to the Canadian Centre for DNA Barcoding at the Received: June 03, 2021 | Published: July 26, 2021 University of Guelph, Ontario, Canada for sequencing of the COI DNA barcode. From 1042 specimens, 544 COI sequences were obtained falling into 199 Barcode Identification Numbers (BINs), of which 76 correspond to recognized species. For 15 species of decapods (Loxorhynchus grandis, Pelia tumida, Pugettia dalli, Metacarcinus anthonyi, Metacarcinus gracilis, Pachygrapsus crassipes, Pleuroncodes planipes, Lophopanopeus sp., Pinnixa franciscana, Pinnixa tubicola, Pagurus longicarpus, Petrolisthes cabrilloi, Portunus xantusii, Hemigrapsus oregonensis, Heptacarpus brevirostris), DNA barcoding allowed the matching of different life-cycle stages (zoea, megalops, adult). -
The American Slipper Limpet Crepidula Fornicata (L.) in the Northern Wadden Sea 70 Years After Its Introduction
Helgol Mar Res (2003) 57:27–33 DOI 10.1007/s10152-002-0119-x ORIGINAL ARTICLE D. W. Thieltges · M. Strasser · K. Reise The American slipper limpet Crepidula fornicata (L.) in the northern Wadden Sea 70 years after its introduction Received: 14 December 2001 / Accepted: 15 August 2001 / Published online: 25 September 2002 © Springer-Verlag and AWI 2002 Abstract In 1934 the American slipper limpet 1997). In the centre of its European distributional range Crepidula fornicata (L.) was first recorded in the north- a population explosion has been observed on the Atlantic ern Wadden Sea in the Sylt-Rømø basin, presumably im- coast of France, southern England and the southern ported with Dutch oysters in the preceding years. The Netherlands. This is well documented (reviewed by present account is the first investigation of the Crepidula Blanchard 1997) and sparked a variety of studies on the population since its early spread on the former oyster ecological and economic impacts of Crepidula. The eco- beds was studied in 1948. A field survey in 2000 re- logical impacts of Crepidula are manifold, and include vealed the greatest abundance of Crepidula in the inter- the following: tidal/subtidal transition zone on mussel (Mytilus edulis) (1) Accumulation of pseudofaeces and of fine sediment beds. Here, average abundance and biomass was 141 m–2 through the filtration activity of Crepidula and indi- and 30 g organic dry weight per square metre, respec- viduals protruding in stacks into the water column. tively. On tidal flats with regular and extended periods of This was reported to cause changes in sediments and emersion as well as in the subtidal with swift currents in near-bottom currents (Ehrhold et al. -
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. -
Rachor, E., Bönsch, R., Boos, K., Gosselck, F., Grotjahn, M., Günther, C
Rachor, E., Bönsch, R., Boos, K., Gosselck, F., Grotjahn, M., Günther, C.-P., Gusky, M., Gutow, L., Heiber, W., Jantschik, P., Krieg, H.J., Krone, R., Nehmer, P., Reichert, K., Reiss, H., Schröder, A., Witt, J. & Zettler, M.L. (2013): Rote Liste und Artenlisten der bodenlebenden wirbellosen Meerestiere. – In: Becker, N.; Haupt, H.; Hofbauer, N.; Ludwig, G. & Nehring, S. (Red.): Rote Liste gefährdeter Tiere, Pflanzen und Pilze Deutschlands, Band 2: Meeresorganismen. – Münster (Landwirtschaftsverlag). – Na- turschutz und Biologische Vielfalt 70 (2): S. 81-176. Die Rote Liste gefährdeter Tiere, Pflanzen und Pilze Deutschlands, Band 2: Meeres- organismen (ISBN 978-3-7843-5330-2) ist zu beziehen über BfN-Schriftenvertrieb – Leserservice – im Landwirtschaftsverlag GmbH 48084 Münster Tel.: 02501/801-300 Fax: 02501/801-351 http://www.buchweltshop.de/bundesamt-fuer-naturschutz.html bzw. direkt über: http://www.buchweltshop.de/nabiv-heft-70-2-rote-liste-gefahrdeter-tiere-pflanzen-und- pilze-deutschlands-bd-2-meeresorganismen.html Preis: 39,95 € Naturschutz und Biologische Vielfalt 70 (2) 2013 81 –176 Bundesamtfür Naturschutz Rote Liste und Artenlisten der bodenlebenden wirbellosen Meerestiere 4. Fassung, Stand Dezember 2007, einzelne Aktualisierungenbis 2012 EIKE RACHOR,REGINE BÖNSCH,KARIN BOOS, FRITZ GOSSELCK, MICHAEL GROTJAHN, CARMEN- PIA GÜNTHER, MANUELA GUSKY, LARS GUTOW, WILFRIED HEIBER, PETRA JANTSCHIK, HANS- JOACHIM KRIEG,ROLAND KRONE, PETRA NEHMER,KATHARINA REICHERT, HENNING REISS, ALEXANDER SCHRÖDER, JAN WITT und MICHAEL LOTHAR ZETTLER unter Mitarbeit von MAREIKE GÜTH Zusammenfassung Inden hier vorgelegten Listen für amMeeresbodenlebende wirbellose Tiere (Makrozoo- benthos) aus neun Tierstämmen wurden 1.244 Arten bewertet. Eszeigt sich, dass die Verhältnis- se in den deutschen Meeresgebietender Nord-und Ostsee (inkl. -
Ecological Role of Marine Intertidal Hermit Crabs in California
Swarms of swift scavengers: ecological role of marine intertidal hermit crabs in California Mark E. Laidre1* and Alison L. Greggor1 1Department of Integrative Biology, University of California, Berkeley Running title: Swarms of swift scavengers Word count Abstract: 241 Main text (including references): 5,475 With 2 Tables and 4 Figures Electronic Supplementary Material (4 Supplementary Figures) *Corresponding author address: Department of Biological Sciences Dartmouth College The Class of 1978 Life Sciences Center 78 College Street Hanover, NH 03755 Phone: +1 (609) 751-8041, Fax: +1 (603) 646-1347 Email: [email protected] 1 Abstract 2 While marine hermit crabs are well known for being omnivorous filter feeders, less is 3 known about the role they may play as active carrion scavengers in intertidal ecosystems. 4 Prior studies have revealed that intertidal hermit crabs can be attracted to chemical cues 5 from predated gastropods. Yet their attraction is usually assumed to be driven primarily 6 by the availability of new shells rather than by food. We conducted field experiments to 7 assess hermit crabs’ potential role as generalist carrion scavengers on the California 8 coast, examining their speed of attraction and the size of the aggregations they formed in 9 response to chemical cues from freshly smashed gastropods and mussels, both of which 10 indicated available carrion. Compared to all other marine species, hermit crabs (including 11 Pagurus samuelis, Pagurus hirsutiusculus, and Pagurus granosimanus) were the fastest 12 to arrive at the provisioning sites, and they also dominated the provisioning sites, forming 13 aggregations of up to 20 individuals, which outcompeted all other scavengers for carrion. -
Genus Panopeus H. Milne Edwards, 1834 Key to Species [Based on Rathbun, 1930, and Williams, 1983] 1
610 Family Xanthidae Genus Panopeus H. Milne Edwards, 1834 Key to species [Based on Rathbun, 1930, and Williams, 1983] 1. Dark color of immovable finger continued more or less on palm, especially in males. 2 Dark color of immovable finger not continued on palm 7 2. (1) Outer edge of fourth lateral tooth longitudinal or nearly so. P. americanus Outer edge of fourth lateral tooth arcuate 3 3. (2) Edge of front thick, beveled, and with transverse groove P. bermudensis Edge of front if thick not transversely grooved 4 4. (3) Major chela with cusps of teeth on immovable finger not reaching above imaginary straight line drawn between tip and angle at juncture of finger with anterior margin of palm (= length immovable finger) 5 Major chela with cusps of teeth near midlength of immovable finger reaching above imaginary straight line drawn between tip and angle at juncture of finger with anterior margin of palm (= length immovable finger) 6 5. (4) Coalesced anterolateral teeth 1-2 separated by shallow rounded notch, 2 broader than but not so prominent as 1; 4 curved forward as much as 3; 5 much smaller than 4, acute and hooked forward; palm with distance between crest at base of movable finger and tip of cusp lateral to base of dactylus 0.7 or less length of immovable finger P. herbstii Coalesced anterolateral teeth 1-2 separated by deep rounded notch, adjacent slopes of 1 and 2 about equal, 2 nearly as prominent as 1; 4 not curved forward as much as 3; 5 much smaller than 4, usually projecting straight anterolaterally, sometimes slightly hooked; distance between crest of palm and tip of cusp lateral to base of movable finger 0.8 or more length of immovable finger P. -
A Novel Interaction: the Thin Stripe Hermit Crab, Clibanarius
A NOVEL INTERACTION: THE THIN STRIPE HERMIT CRAB, CLIBANARIUS VITTATUS, KILLS THE FLORIDA CROWN CONCH, MELONGENA CORONA, FOR ITS SHELL by Jennifer Cutter A Thesis Submitted to the Faculty of Charles E. Schmidt College of Science In Partial Fulfillment of the Requirements for the Degree of Master of Science Florida Atlantic University Boca Raton, FL August 2017 Copyright by Jennifer Cutter 2017 ii ACKNOWLEDGEMENTS I would like to thank Florida Atlantic University, Harbor Branch Oceanographic Institute, and Dr. Donna Devlin for giving me the opportunity to conduct this fascinating study. I would also like to thank the other committee members (Dr. Vincent Encomio, Dr. Edward Proffitt, and Dr. William Brooks) for their help, advice, and guidance. This work was made possible through funding from the Indian River Lagoon Research Fellowship awarded by the Harbor Branch Foundation and a scholarship awarded by The Broward Shell Club. Additionally, I would like to thank Dr. Richard Turner for being willing to meet with me on several occasions to answer questions and share his vast knowledge. iv ABSTRACT Author: Jennifer Cutter Title: A Novel Interaction: The thin stripe hermit Crab, Clibanarius vittatus, kills the Florida crown conch, Melongena corona, for its shell Institution: Florida Atlantic University Thesis Advisor: Dr. Donna Devlin Degree: Master of Science Year: 2017 The hermit crab Clibanarius vittatus kills Melongena corona solely to acquire a better fitting shell. This finding is contrary to previous studies, which found that hermit crabs of other species cannot kill gastropods or, in most instances, remove freshly dead gastropods from their shells. This interaction cannot be classified as predation because Melongena tissue was never consumed.