DOCSLIB.ORG

Ecology and Systematics of Mangrove Crabs of the Genus Perisesarma (Crustacea: Brachyura: Sesarmidae) from East Africa

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Ecology and Systematics of Mangrove Crabs of the Genus Perisesarma (Crustacea: Brachyura: Sesarmidae) from East Africa Blackwell Science, LtdOxford, UKZOJZoological Journal of the Linnean Society0024-4082The Lin- nean Society of London, 2004? 2004 141? 435445 Original Article ECOLOGY AND SYSTEMATICS OF EAST AFRICAN PERISESARMA D. P. GILLIKIN and C. D. SCHUBART Zoological Journal of the Linnean Society, 2004, 141, 435–445. With 4 figures Ecology and systematics of mangrove crabs of the genus Perisesarma (Crustacea: Brachyura: Sesarmidae) from East Africa DAVID PAUL GILLIKIN1* and CHRISTOPH D. SCHUBART2 1Department of Analytical and Environmental Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium 2Biologie 1, Institut für Zoologie, Universität Regensburg, 93040 Regensburg, Germany Received August 2003; accepted for publication February 2004 East Africa has a reduced mangrove crab species richness when compared to Asian mangroves. To date, only one spe- cies of Perisesarma de Man, 1895 has been reported in East Africa, despite more than 30 years of mangrove research in this region. Based on morphology, colour, mtDNA and behaviour, we describe a new species of Perisesarma from Kenya, P. samawati sp. nov. Surprisingly, when comparing molecular data from other species within this genus, P. samawati sp. nov. and the sympatric P. guttatum (A. Milne Edwards, 1869) are not sister species. Some aspects of the ecology of P. guttatum and P. samawati sp. nov. are compared and the differences discussed. Additionally, we compare P. samawati sp. nov. with the ecological literature of a possible sister species P. eumolpe de Man, 1895 from Malaysian mangroves. Our findings suggest that the new species is an ecologically important species in East African mangroves. © 2004 The Linnean Society of London, Zoological Journal of the Linnean Society, 2004, 141, 435–445. ADDITIONAL KEYWORDS: 16S rRNA – Grapsoidea – Indian Ocean – Kenya – mangroves – morphology – mtDNA – new species – phylogeny – taxonomy. INTRODUCTION Grave & Tack, 2001). Perisesarma spp. are reported to have the highest biomass of mangrove crabs in certain It is continuously being reported that grapsoid crabs, forests (Ashton, Macintosh & Hogarth, 2003). especially those from the species-rich family Sesarmi- East Africa, in general, has a limited number of dae, play an important ecological role in mangrove brachyuran crabs associated with mangroves (about ecosystems (reviewed in Lee, 1998). For example, 35 species; cf. Hartnoll, 1975) compared with south- while many mangrove sesarmids do not assimilate east Asia (>100 in Malaysia alone; Tan & Ng, 1994). In much carbon from mangrove leaves and rely more on fact, there has not been a new grapsoid species mangrove sediments (Bouillon et al., 2002; Skov & described from East Africa since 1965, when Crosnier Hartnoll, 2002), it appears that Perisesarma spp. do distinguished Chiromantes ortmanni from the well supplement their diet with mangrove leaves (Leh & known C. eulimene de Man (1895), despite the large Sasekumar, 1985; Slim et al., 1997; Dahdouh-Guebas amount of ecological research concentrated in this et al., 1999; Ashton, 2002). The removal and process- area (e.g. Bright & Hogue, 1972; Hartnoll, 1975; Mich- ing of mangrove leaves by crabs helps to trap the eli, Gherardi & Vannini, 1991; Cannicci et al., 1996; energy stored in these leaves within the mangal before Ruwa, 1997; Slim et al., 1997; Dahdouh-Guebas et al., the tide can carry them away (see Lee, 1998; Skov & 1999; Fratini, Cannicci & Vannini, 2000; Flores, Paula Hartnoll, 2002). Furthermore, their faecal material & Dray, 2003). Currently, there is only one species of potentially contributes to secondary production via a Perisesarma, P. guttatum, attributed to East Africa coprophagous food chain (cf. Lee, 1997; Gillikin, De (Crosnier, 1965; Hartnoll, 1975; Vannini & Valmori, 1981), whereas there have been 19 species reported *Corresponding author. E-mail: [email protected] within the Indo-Pacific region as a whole (Davie, © 2004 The Linnean Society of London, Zoological Journal of the Linnean Society, 2004, 141, 435–445 435 436 D. P. GILLIKIN and C. D. SCHUBART 2003). Given the long planktonic phase of East African species was determined by visual inspection in 10 m species of Perisesarma (22–25 days, see Pereyra Lago, diameter plots along a transect perpendicular to the 1993), and the presence of strong oceanic currents in coastline, covering the full width of the forest. We the Indian Ocean (cf. Hartnoll, 1975), it is surprising investigated 15 plots along a 364 m long transect in that there are not more species of this genus present Gazi Bay and 23 plots along a 1298 m long transect in in East Africa. Perisesarma guttatum, endemic to East Mida Creek. Each plot was first inspected using Africa, is an important element of the Kenyan man- 10 ¥ 42 binoculars from a distance of approximately grove fauna, removing almost anything that falls to 7 m for 15 min and the crab species recognized the forest floor (Gillikin, 2000). These crabs are not at recorded. Afterwards, naked eye observations were all shy, have wide distribution across the intertidal made with two observers sitting on opposite sides of mangal [generally, from the Ceriops tagal (Perr.) C.B. the plot for at least 30 min (cf. Hartnoll et al., 2002; Rob. zone down to the seaward front of the mangal] Skov et al., 2002). On approaching the plot, a distur- and are usually the first of the mangrove fauna to bance was created, causing all crab species to imme- reach any potential food source (cf. Ruwa, 1997; Fra- diately take refuge. The time at which the first tini et al., 2000; Gillikin, 2000). individual of a species would re-emerge was recorded. During field surveys in 1998, it was noticed that All observations took place at low tide during the day; among the crabs that were referred to as P. guttatum, no distinction of lunar cycle was made. To further two forms with distinct colour patterns could be dis- assess the behavioural differences between the species tinguished. Further investigations also revealed of Perisesarma, one individual of each type was placed behavioural and ecological differences, the more in a 50 cm diameter container and stimulated by mov- colourful specimens not venturing out to forage as rap- ing a hand over the container. This experiment was idly as the darker form, and seemingly returning to a replicated with males and females, each three times. specific shelter more regularly when retreating. This At two plots, where numbers of both types appeared led us to believe that the crab was not in fact high, feeding experiments were conducted on three P. guttatum, but a different species of Perisesarma, separate days. First, a fresh green leaf fragment previously unrecorded in East Africa. After detailed (± 2 cm2) was placed on the forest floor and the first morphological examinations and careful comparisons species to reach it was recorded (for discussions of with the literature describing other species of Peris- crabs feeding on green leaves, see Ashton 2002; Gil- esarma, it became apparent that this species was likin, De Wachter & Tack, 2004). Secondly, ten or more indeed different from P. guttatum, as well as from all leaves were fragmented and spread on the forest floor other described members of the genus. In this study, to create an abundance of leaf fragments. The behav- we describe the new species of Perisesarma from Ken- iour following both of these experimental settings was yan mangroves, where it occurs sympatrically with recorded. P. guttatum. Further evidence is provided by mtDNA Type specimens have been deposited at the Senck- sequences to show that, compared with other mem- enberg Museum (SMF), Frankfurt a. M., Germany; bers of the genus, the new species is not the sister spe- the Royal Belgian Institute of Natural Sciences cies of P. guttatum. (KBIN), Brussels, Belgium; the Nationaal Natuurhis- torisch Museum (RMNH), Leiden, Netherlands; the Naturhistorisches Museum (NHMW), Vienna, Aus- MATERIAL AND METHODS tria; the British Museum of Natural History (NHM), All but one specimen of the studied material was col- London, UK; the Zoological Reference Collection Raf- lected from the eastern riverine mangroves of Mida fles Museum (ZRC), Singapore; and the National Creek, Kenya (near the village of Dabaso, 80 km north Museum of Natural History (USNM), Smithsonian of Mombasa) during September to November 1998 and Institute, Washington, D.C., USA. Measurements of 1999 by D. P. Gillikin and A. Verheyden. One female the studied material represent the carapace width and was found north of Kidogoweni Creek in the riverine length in millimetres. Abbreviations and measure- forest type of the Gazi Bay mangrove system (40 km ments used in this text are: cw, maximum carapace south of Mombasa) (forest types according to Lugo & width; cl, carapace length; bh, body height; iw, inter- Snedaker, 1974). Perisesarma guttatum was collected orbital width; el, extraorbital tooth length; 3mxl, third from both Mida Creek and Gazi Bay mangroves dur- maxilliped length; 3mxw, third maxilliped width; pah, ing the same time. All collections took place during chelar palm height; prp4, propodus length of fourth field surveys for the European Union Project ‘GRO- pereiopod; 4merl, merus length of fourth pereiopod; FLO’ (contract IC18-CT96-0065). 4merw, merus width of fourth pereiopod; 4dacl, dacty- Ecological studies took place in both Mida Creek lus length of fourth pereiopod; tell, telson length; telw, and Gazi Bay mangroves and are detailed in Gillikin telson width; 6abl, length of sixth abdominal segment; (2000). In both forests, presence or absence of crab 6abh, width of sixth abdominal segment. © 2004 The Linnean Society of London, Zoological Journal of the Linnean Society, 2004, 141, 435–445 ECOLOGY AND SYSTEMATICS OF EAST AFRICAN PERISESARMA 437 The following material was examined: Holotype: using the software MEGA 2.1 (Kumar et al., 2001) and (SMF 29333) male (24.63 ¥ 20.00 mm), mangroves PAUP* (Swofford, 1998). Subsequently, significance near village of Dabaso, Watamu, Kenya (S03∞20.905¢ levels were evaluated with the bootstrap method E039∞59.498¢), Sept.–Nov.
Load more

Recommended publications
  • A Classification of Living and Fossil Genera of Decapod Crustaceans
    RAFFLES BULLETIN OF ZOOLOGY 2009 Supplement No. 21: 1–109 Date of Publication: 15 Sep.2009 © National University of Singapore A CLASSIFICATION OF LIVING AND FOSSIL GENERA OF DECAPOD CRUSTACEANS Sammy De Grave1, N. Dean Pentcheff 2, Shane T. Ahyong3, Tin-Yam Chan4, Keith A. Crandall5, Peter C. Dworschak6, Darryl L. Felder7, Rodney M. Feldmann8, Charles H. J. M. Fransen9, Laura Y. D. Goulding1, Rafael Lemaitre10, Martyn E. Y. Low11, Joel W. Martin2, Peter K. L. Ng11, Carrie E. Schweitzer12, S. H. Tan11, Dale Tshudy13, Regina Wetzer2 1Oxford University Museum of Natural History, Parks Road, Oxford, OX1 3PW, United Kingdom [email protected] [email protected] 2Natural History Museum of Los Angeles County, 900 Exposition Blvd., Los Angeles, CA 90007 United States of America [email protected] [email protected] [email protected] 3Marine Biodiversity and Biosecurity, NIWA, Private Bag 14901, Kilbirnie Wellington, New Zealand [email protected] 4Institute of Marine Biology, National Taiwan Ocean University, Keelung 20224, Taiwan, Republic of China [email protected] 5Department of Biology and Monte L. Bean Life Science Museum, Brigham Young University, Provo, UT 84602 United States of America [email protected] 6Dritte Zoologische Abteilung, Naturhistorisches Museum, Wien, Austria [email protected] 7Department of Biology, University of Louisiana, Lafayette, LA 70504 United States of America [email protected] 8Department of Geology, Kent State University, Kent, OH 44242 United States of America [email protected] 9Nationaal Natuurhistorisch Museum, P. O. Box 9517, 2300 RA Leiden, The Netherlands [email protected] 10Invertebrate Zoology, Smithsonian Institution, National Museum of Natural History, 10th and Constitution Avenue, Washington, DC 20560 United States of America [email protected] 11Department of Biological Sciences, National University of Singapore, Science Drive 4, Singapore 117543 [email protected] [email protected] [email protected] 12Department of Geology, Kent State University Stark Campus, 6000 Frank Ave.
    [Show full text]
  • Diversity of Crabs in Tekkali Creek, Srikakulam District, Andhra Pradesh
    International Journal of Fisheries and Aquatic Studies 2016; 4(1): 414-418 ISSN: 2347-5129 (ICV-Poland) Impact Value: 5.62 Diversity of crabs in Tekkali creek, Srikakulam district, (GIF) Impact Factor: 0.352 IJFAS 2016; 4(1): 414-418 Andhra Pradesh © 2016 IJFAS www.fisheriesjournal.com Received: 15-11-2015 Myla S Chakravarty, PRC Ganesh, D Amarnath, B Shanthi Sudha, V Vivek Accepted: 16-12-2015 Myla S Chakravarty Abstract Department of Marine Living Tekkali Creek is located on the East coast of India in Srikakulam District, Andhra Pradesh being Resources, Andhra University, connected by different channels, canals, streams etc. The creek was surveyed for different crab Visakhapatnam – 530 003, populations. Fifteen species belonging to five families– Ocypodidae, Grapsidae, Sesarmidae, Portinidae Andhra Pradesh, India. and Varunidae and nine genera- Ocypode, Uca, Grapsus, Sesarma, Perisesarma, Episesarma, Portunus, Scylla and Hemigrapsus were recorded. Of the species identified seven were marine and eight were PRC Ganesh brackish water. Department of Marine Living Resources, Andhra University, Keywords: Tekkali Creek, Brachyuran Crabs. Visakhapatnam – 530 003, Andhra Pradesh, India. 1. Introduction D Amarnath Crabs are one of the important faunal communities serving as very good food source to human Department of Marine Living beings in the marine and brackish water ecosystems. They are predacious carnivores and Resources, Andhra University, scavengers and playing an important role in detritus formation, recycling of nutrients and Visakhapatnam – 530 003, [1] [2] Andhra Pradesh, India. overall dynamics of ecosystems . Crabs are distributed up to 6000 m depth . About 5000 to [2- 10,000 species of brachyuran crabs belonging to 700 genera have been reported worldwide B Shanthi Sudha 9].
    [Show full text]
  • From Ghost and Mud Shrimp
    Zootaxa 4365 (3): 251–301 ISSN 1175-5326 (print edition) http://www.mapress.com/j/zt/ Article ZOOTAXA Copyright © 2017 Magnolia Press ISSN 1175-5334 (online edition) https://doi.org/10.11646/zootaxa.4365.3.1 http://zoobank.org/urn:lsid:zoobank.org:pub:C5AC71E8-2F60-448E-B50D-22B61AC11E6A Parasites (Isopoda: Epicaridea and Nematoda) from ghost and mud shrimp (Decapoda: Axiidea and Gebiidea) with descriptions of a new genus and a new species of bopyrid isopod and clarification of Pseudione Kossmann, 1881 CHRISTOPHER B. BOYKO1,4, JASON D. WILLIAMS2 & JEFFREY D. SHIELDS3 1Division of Invertebrate Zoology, American Museum of Natural History, Central Park West @ 79th St., New York, New York 10024, U.S.A. E-mail: [email protected] 2Department of Biology, Hofstra University, Hempstead, New York 11549, U.S.A. E-mail: [email protected] 3Department of Aquatic Health Sciences, Virginia Institute of Marine Science, College of William & Mary, P.O. Box 1346, Gloucester Point, Virginia 23062, U.S.A. E-mail: [email protected] 4Corresponding author Table of contents Abstract . 252 Introduction . 252 Methods and materials . 253 Taxonomy . 253 Isopoda Latreille, 1817 . 253 Bopyroidea Rafinesque, 1815 . 253 Ionidae H. Milne Edwards, 1840. 253 Ione Latreille, 1818 . 253 Ione cornuta Bate, 1864 . 254 Ione thompsoni Richardson, 1904. 255 Ione thoracica (Montagu, 1808) . 256 Bopyridae Rafinesque, 1815 . 260 Pseudioninae Codreanu, 1967 . 260 Acrobelione Bourdon, 1981. 260 Acrobelione halimedae n. sp. 260 Key to females of species of Acrobelione Bourdon, 1981 . 262 Gyge Cornalia & Panceri, 1861. 262 Gyge branchialis Cornalia & Panceri, 1861 . 262 Gyge ovalis (Shiino, 1939) . 264 Ionella Bonnier, 1900 .
    [Show full text]
  • Embryonic Development of the Estuarine Crab Neosarmatium Indicum (Crustacea: Brachyura: Sesarmidae) from the Mangroves of the Okinawa Island, Japan
    Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 49-54 ISSN 1023-6104 http://journals.sfu.ca/bd/index.php/UJZRU © Rajshahi University Zoological Society Embryonic development of the estuarine crab Neosarmatium indicum (Crustacea: Brachyura: Sesarmidae) from the mangroves of the Okinawa Island, Japan Md. Moniruzzaman Sarker1, Md. Sirajul Islam2 and Tsuyoshi Uehara3 1Department of Zoology, University of Rajshahi, Rajshahi-6206, Bangladesh 2Department of Environmental Science and Resource Management, Mawlana Bhashani Science and Technology University, Tangail-1902, Bangladesh. 3Department of Chemistry, Biology and Marine Science, Faculty of Science, University of the Ryukyus, 1 Senbaru, Nishihara City, Okinawa 903-0213, Japan Abstract : The complete embryonic development of the mangrove sesarmid crab Neosarmatium indicum (A. Milne Edwards, 1868) was described based on internal and external morphological changes in live fertilized eggs reared in the laboratory. Several pairs of N. indicum were collected from the Nuha River mangrove swamp of the southern Okinawa Island, Japan, which is consisted mainly with the mangrove Kandelia candel, and densely populated by the genus Perisesarma and Neosarmatium indicum . The fertilized eggs were macrolecithal, centrolecithal and spherical in shape, filled with uniform dark olive colour, without evidence of any development. The diameter of fertilized egg was 0.36 mm, which increased to 0.47 mm before hatching. Embryo development from fertilized eggs to hatching (first zoea stage) lasted average of 16 days at 250C and salinity at 80‰. Sixteen stages of embryonic development were categorized by following continuous observation using an optical DIC microscope equipped with digital camera, video camera and printer. After 24 hours of incubation, fertilized eggs became 32-celled stage of development.
    [Show full text]
  • Sesarma Haematoche) Mi Ryu1 and Jae Geun Kim1,2,3*
    Ryu and Kim Journal of Ecology and Environment (2020) 44:23 Journal of Ecology https://doi.org/10.1186/s41610-020-00167-6 and Environment SHORT COMMUNICATION Open Access Influence of roadkill during breeding migration on the sex ratio of land crab (Sesarma haematoche) Mi Ryu1 and Jae Geun Kim1,2,3* Abstract Adult land crabs generally live on land while their larvae live in the sea. In the case of Sesarma haematoche, female crabs migrate from land to sea to release the larvae at the high tide of syzygy night. Artificial structures along coastal areas are being obstacles for the migration of land crabs and causing synchronized roadkills on coastal roads during breeding migration. In this research, we compared the sex ratios of crab populations in coastal areas with coastal roads and uninhabited island areas with no road. The proportion of females in inland habitats with coastal roads was significantly smaller than island habitats. In particular, females are exposed to the risk of annually repeated roadkills, and the proportion of females decreases rapidly with their growth. If this tendency is general for land crab populations in the coastal areas with roads, significant road mortality of female land crabs during breeding migration can lead to severe population decline in coastal areas. Therefore, it is necessary to take an action to save land crabs crossing coastal roads. Keywords: Breeding migration, Coastal roads, Land crab, Roadkill, Sesarma haematoche, Sex ratio Introduction Particularly, land crabs are representative animals that The coastal roads are expanding rapidly due to the dense hu- are affected significantly by changes in the transition manpopulationandseasidetowninthecoastalarea(Sekovski zone and also keystone species for coastal forests and la- 2012).
    [Show full text]
  • Selection of an Omnivorous Diet by the Mangrove Tree Crab Aratus Pisonii in Laboratory Experiments ⁎ Amy A
    Journal of Sea Research 59 (2008) 59–69 www.elsevier.com/locate/seares Selection of an omnivorous diet by the mangrove tree crab Aratus pisonii in laboratory experiments ⁎ Amy A. Erickson a, , Ilka C. Feller b, Valerie J. Paul a, Lisa M. Kwiatkowski a, Woody Lee a a Smithsonian Marine Station, 701 Seaway Drive, Fort Pierce, FL, USA 34949 b Smithsonian Environmental Research Center, 647 Contees Wharf Rd., PO Box 28, Edgewater, MD, USA 21037 Received 16 October 2006; accepted 12 June 2007 Available online 26 July 2007 Abstract Observational studies on leaf damage, gut content analyses, and crab behaviour have demonstrated that like numerous other mangrove and salt-marsh generalists, the mangrove tree crab Aratus pisonii feeds on a variety of food resources. This study is the first that experimentally tests feeding preferences of A. pisonii, as well as the first to test experimentally whether chemical composition of food resources is responsible for food selection. Feeding preferences were determined among a variety of plant, algal, and animal resources available in the field both in Florida and Belize, using multiple-choice feeding assays, where male and female crabs simultaneously were offered a variety of food items. To test whether chemistry of food resources was responsible for feeding preferences, chemical extracts of food resources were incorporated in an agar-based artificial food, and used in feeding assays. Results of feeding assays suggest that crabs prefer animal matter from ∼ 2.5 to 13× more than other available resources, including leaves of the red mangrove Rhizophora mangle, which contribute the most to their natural diet.
    [Show full text]
  • Complete Larval and Early Juvenile Development of the Mangrove Crab
    JOURNAL OF PLANKTON RESEARCH j VOLUME 26 j NUMBER 12 j PAGES 1389–1408 j 2004 Complete larval and early juvenile development of the mangrove crab Perisesarma fasciatum (Crustacea: Brachyura: Sesarmidae) from Singapore, with a larval comparison of Parasesarma and Perisesarma GUILLERMO GUERAO1*, KLAUS ANGER2, U. W. E. NETTELMANN2 AND CHRISTOPH D. SCHUBART3 1 DEPARTAMENT DE BIOLOGIA ANIMAL (ARTRO` PODES), FACULTAT DE BIOLOGIA (U.B.), AV. DIAGONAL 645, 08028 BARCELONA, SPAIN, 2 ALFRED-WEGENER-INSTITUT FU¨ R POLAR- UND MEERESFORSCHUNG, BIOLOGISCHE ANSTALT HELGOLAND, MEERESSTATION, 27498 HELGOLAND, 3 GERMANY AND BIOLOGIE 1: ZOOLOGIE, UNIVERSITA¨ T REGENSBURG, 93040 REGENSBURG, GERMANY *CORRESPONDING AUTHOR: [email protected] Received January 22, 2004; accepted in principle June 2, 2004; accepted for publication July 13, 2004; published online July 23, 2004 The complete larval development of the sesarmid crab Perisesarma fasciatum (Lanchester, 1900) from Singapore was obtained from laboratory culture. All four zoeal stages, the megalopa and the first crab stage are described and illustrated. The morphological characteristics of the larvae of P. fasciatum are compared with those of other known larvae of the genera Perisesarma and Parasesarma. The larval morphology of P. fasciatum clearly presents the typical combination of features that characterize sesarmid larvae. Overall, larval stages are very similar in Perisesarma and Parasesarma and it is impossible to distinguish these two genera by larval morphology. INTRODUCTION still being revised
    [Show full text]
  • 17 the Crabs Belonging to the Grapsoidea Include a Lot Of
    17 SUPERFAMILY GRAPSOIDEA The crabs belonging to the Grapsoidea include a lot of ubiquitous species collected in the mangrove and/or along the coastline. As a result, most of the species listed here under the ‘Coastal Rock-rubble’ biotope of table 2b could be reasonably listed also with marine species. This is particularly true for the Grapsidae: Grapsus, Pachygrapsus, Pseudograpsus, and Thalassograpsus. FAMILY GECARCINIDAE Cardisoma carnifex (Herbst, 1796). Figure 12. – Cardisoma carnifex - Guinot, 1967: 289 (Checklist of WIO species, with mention of Grande Comore and Mayotte). - Bouchard, 2009: 6, 8, Mayotte, Malamani mangrove, 16 April 2008, St. 1, 12°55.337 S, 44°09.263 E, upper mangrove in shaded area, burrow, about 1.5 m depth, 1 male 61×74 mm (MNHN B32409). - KUW fieldwork November 2009, St. 6, Petite Terre, Badamiers spillway, upper littoral, 1 female 53×64 mm (MNHN B32410), 1 male 65×75.5 mm (MNHN B32411); St. 29, Ngouja hotel, Mboianatsa beach, in situ photographs only. Distribution. – Widespread in the IWP. Red Sea, Somalia, Kenya, Tanzania, Mozambique, South Africa, Europa, Madagascar, Comoros, Seychelles, Réunion, Mauritius, India, Taiwan, Japan, Australia, New Caledonia, Fiji, Wallis & Futuna, French Polynesia. Comment. – Gecarcinid land crabs are of large size and eaten in some places (West Indies, Wallis & Futuna, and French Polynesia). In Mayotte, however, they are not much prized for food and are not eaten. Figure 12. Cardisoma carnifex. Mayotte, KUW 2009 fieldwork: A) aspect of station 29, upper littoral Ngouja hotel, Mboianatsa beach; B) same, detail of a crab at the entrance of its burrow; C) St. 6, 1 female 53×64 mm (MNHN B32410); D) probably the same specimen, in situ at St.
    [Show full text]
  • The Crabs from Mayotte Island (Crustacea, Decapoda, Brachyura)
    THE CRABS FROM MAYOTTE ISLAND (CRUSTACEA, DECAPODA, BRACHYURA) Joseph Poupin, Régis Cleva, Jean-Marie Bouchard, Vincent Dinhut, and Jacques Dumas Atoll Research Bulletin No. 617 1 May 2018 Washington, D.C. All statements made in papers published in the Atoll Research Bulletin are the sole responsibility of the authors and do not necessarily represent the views of the Smithsonian Institution or of the editors of the bulletin. Articles submitted for publication in the Atoll Research Bulletin should be original papers and must be made available by authors for open access publication. Manuscripts should be consistent with the “Author Formatting Guidelines for Publication in the Atoll Research Bulletin.” All submissions to the bulletin are peer reviewed and, after revision, are evaluated prior to acceptance and publication through the publisher’s open access portal, Open SI (http://opensi.si.edu). Published by SMITHSONIAN INSTITUTION SCHOLARLY PRESS P.O. Box 37012, MRC 957 Washington, D.C. 20013-7012 https://scholarlypress.si.edu/ The rights to all text and images in this publication are owned either by the contributing authors or by third parties. Fair use of materials is permitted for personal, educational, or noncommercial purposes. Users must cite author and source of content, must not alter or modify the content, and must comply with all other terms or restrictions that may be applicable. Users are responsible for securing permission from a rights holder for any other use. ISSN: 0077-5630 (online) This work is dedicated to our friend Alain Crosnier, great contributor for crab sampling in Mayotte region between 1958-1971 and author of several important taxonomic contributions in the region.
    [Show full text]
  • Sound Production and Reception in Mangrove Crabs Perisesarma Spp
    Vol. 5: 107–116, 2009 AQUATIC BIOLOGY Printed May 2009 doi: 10.3354/ab00136 Aquat Biol Published online March 10, 2009 OPEN ACCESS Sound production and reception in mangrove crabs Perisesarma spp. (Brachyura: Sesarmidae) P. Y. Boon*, D. C. J. Yeo, P. A. Todd Department of Biological Sciences, Marine Biology Laboratory, National University of Singapore, 14 Science Drive 4, Blk S1, #02–05, Singapore, 117543 ABSTRACT: Acoustic signalling and sound production structures in the sesarmid crabs Perisesarma eumolpe (De Man) and P. indiarum (Tweedie) from Mandai mangroves, Singapore, were examined using 40 to 20 000 Hz sound recordings and scanning electron microscopy. The sound receptor, Barth’s myochordotonal organ, was identified in both species. Only male crabs were found to display acoustically, and only during agonistic interactions. The present study also revealed key species- specific differences in the morphology of the stridulatory organs, stridulatory movements and result- ing sounds produced. The findings show that acoustic signalling may be a significant component in the social behaviour of mangrove sesarmid crabs. KEY WORDS: Sound · Mangroves · Crab · Crustacea · Brachyura · Sesarmidae · Perisesarma spp. · Stridulation · Singapore Resale or republication not permitted without written consent of the publisher INTRODUCTION vibration or quivering of appendages; (3) percussion or rapping, the striking of a body part on the substrate; Relatively little research has been conducted on and (4) stridulation or rasping, a file-and-scraper the social interactions of mangrove-dwelling sesarmid mechanism involving the appendages and/or the crabs (Mulstay 1980, Seiple & Salmon 1982), despite cephalothorax (Guinot-Dumortier & Dumortier 1960, their important ecological role in this habitat (Smith Salmon & Horch 1972) where the file (pars stridens), et al.
    [Show full text]
  • Cytogenetic of Brachyura (Decapoda): Testing Technical Aspects for Obtaining Metaphase Citation: A
    Firenze University Press Caryologia www.fupress.com/caryologia International Journal of Cytology, Cytosystematics and Cytogenetics Cytogenetic of Brachyura (Decapoda): testing technical aspects for obtaining metaphase Citation: A. Iannucci, S. Cannicci, Z. Lin, K.W.Y. Yuen, C. Ciofi, R. Stan- chromosomes in six mangrove crab species yon, S. Fratini (2020) Cytogenetic of Brachyura (Decapoda): testing techni- cal aspects for obtaining metaphase chromosomes in six mangrove crab Alessio Iannucci1, Stefano Cannicci1,2,*, Zhongyang Lin3, Karen WY species. Caryologia 73(2): 39-49. doi: Yuen3, Claudio Ciofi1, Roscoe Stanyon1, Sara Fratini1 10.13128/caryologia-791 1 Department of Biology, University of Florence, via Madonna del Piano 6, 50019 Sesto Received: December 23, 2019 Fiorentino, Italy. E-mail: [email protected]; [email protected]; roscoe.stanyon@ unifi.it; [email protected] Accepted: April 6, 2020 2 The Swire Institute of Marine Science and Division of Ecology and Biodiversity, Published: July 31, 2020 The University of Hong Kong, Pokfulam road, Hong Kong SAR. E-mail: [email protected]. 3 The School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Copyright: © 2020 A. Iannucci, S. Kong, Hong Kong S.A.R. E-mail: [email protected]; [email protected]. Cannicci, Z. Lin, K.W.Y. Yuen, C. *Corresponding author. Ciofi, R. Stanyon, S. Fratini. This is an open access, peer-reviewed article published by Firenze University Press Abstract. Brachyura is one of the most specious infra-order belonging to Decapoda (http://www.fupress.com/caryologia) and it plays a central role from an ecological and economic point of view.
    [Show full text]
  • Ở Rừng Ngập Mặn Huyện Cù
    Khoa học Tự nhiên Thành phần loài và phân bố của các loài cua (Crustacea: Decapoda: Brachyura) ở rừng ngập mặn huyện Cù Lao Dung, Sóc Trăng 1* 1 1 2 Lê Văn Thọ , Đặng Văn Sơn , Nguyễn Thị Mai Hương1, Phan Doãn Đăng , Trần Ngọc Diễm My 1Viện Sinh học nhiệt đới, Viện Hàn lâm KH&CN Việt Nam 2Trường Đại học Khoa học Tự nhiên, Đại học Quốc gia TP Hồ Chí Minh Ngày nhận bài 8/1/2020; ngày chuyển phản biện 16/1/2020; ngày nhận phản biện 3/3/2020; ngày chấp nhận đăng 26/3/2020 Tóm tắt: Cua (Brachyuran crabs) là nhóm giáp xác (Crustacea) có thành phần loài đa dạng, phân bố rộng và giữ vai trò sinh thái quan trọng ở khu vực rừng ngập mặn (mangrove forest area). Trong nghiên cứu này, các mẫu cua được thu tại 12 điểm nghiên cứu thuộc hai kiểu sinh cảnh, gồm: sinh cảnh rừng ngập mặn và sinh cảnh bãi bồi ở khu vực rừng ngập mặn thuộc huyện Cù Lao Dung, tỉnh Sóc Trăng vào tháng 4 (mùa khô) và tháng 9 (mùa mưa) năm 2019. Kết quả nghiên cứu đã xác định được 34 loài thuộc 17 giống, 7 họ. Trong đó, họ Ocypodidae có đa dạng loài lớn nhất với 11 loài, tiếp theo là họ Sesarmidae (7 loài), Portunidae (6 loài), Varunidae (4 loài), Grapsidae (3 loài), Matutidae (2 loài) và thấp nhất là họ Xanthidae chỉ ghi nhận được 1 loài. Đa dạng loài và mật độ quần thể cua tại sinh cảnh rừng ngập mặn (ghi nhận 26 loài và mật độ dao động từ 34,0±8,4 đến 53,8±15,4 cá thể/m2) cao hơn tại sinh cảnh bãi bồi (ghi nhận được 15 loài và mật độ dao động từ 12,4±1,9 đến 13,6±3,6 cá thể/m2).
    [Show full text]