DOCSLIB.ORG

Synopsis of Biological Data on the Western Rock Lobster Panulirus

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

FAO Fisheries Synopsis N SAST L:1:ioPsIs OF BIOLOGICAL DATA ON THE 1ESTERN ROCK LBSTER Panulirus cygnus (George, 1962) F6 FOOD AND AGRICULTURE ORGANIZATION OF THE UNI1ED NATIONS FISEU SYNOPSES This series of documents, issued by FAO, CSIP.O, INP and NMFS, contains comprehensive reviews of present knowledge on species end stocks of aquatic organisms of present or potential economic interest The Fishery Resources and Environment Division of FAO is responsible for the overall coordination of the series. The primary purpose of this series is to make existing information readily available to fiShery scientists according to a standard pattern, and by so doing also to draw attention to gaps iknowledge. lt is hoped that synopses in this series will be useful to other scientists initiating investigations of the species Concerned or cf related ones, as a means of exchange of knowledge among those already working on the species, and as the basis for comparative study of fisheries resources. They will be brought up to date from time to time as further information becomes available. The documents of this Series are issued under the following titles: Symbol FAO Fisheries Synopsis No. FHUS CSIRO Fisheries Synopsis No. DFO/S Sinopsis sobre l& Peace N° NP/S N M FS Fisheries Synopsis No, NMFS/S Synopses in these series are compiled according to a standard outline described in Fib/Si Rev. 1(1965). FAO, CSIRO, NP and NMFS are working to secure the cooperation of other organizations and of individual scientists in drafting synopses on species about which they have knowledge, and welcome offers of help in this task. Additions and corrections to synopses already issued Will also be most welcome. Comments on individual synopses and requests For information should be addressed to the coordinators arid editors of the issuing organizations, and suggestions regarding the expansion or modification of the outline to FAO: FO; CSIRO: Fishery Resources 2nd Environment Division CSPRO Division of Fisheries and Oceanography Marine Resources Service Box 21 Food and Agriculture Organization of the United Nations Cronulla, N.S.W. 2230 Via delle Terme di Caracalla Australia 00100 Rome. Italy INP: NMFS: Instituto Nacional de Pesca Scientific Publications Office Subsecretaria de Pesca National Marine Fisheries Service, NOAA Secretaria de Pesca 1107 N.E. 45th Street Secretaria de Industria y Comercio Seattle, WA. 98105, USA Carmona y Valle 101- 403 México 7, D.F. Consolidated lists of species or groups covered by synopses issued to date or in preparation will be issued from time to time. Requests for copies of synopses should be addressed to the issuing organization. The following synopses in this series have been issued since January 1979: FIR/S119 Synopsis of biological data on the walleye, SllzoSfedion vitreum P. Colby, RE. McNicol and RA. Ryder 1979 FIR/Si 20 Synopsis of biological data on the mrigala, Cirrhinus mrigaia V.G. Jhingran 1979 FIR/Si 25 FAO species catalogue. Vol.1. Shrimps and prawns of the world LJ3. Holthuìs 1980 FIR/Si 26 Exposé synoptique des données biologiques sur le loup ou bar, DicentrerchuS labrax G. Bernabé 1980 FIR/Si 28 Synopsis on biological data of the Western rock lobster, ,°anulirus cygnus - S.F. Phillips et al. 1980 NMFS/S118 Synopsis of biological data on bonitos of the genus Sarda HO. Yoshicla 1980 NMFSIS1 21 Synopsis of biological data on the striped bass, Morone s.sxetilis - E. Setzler el al. 1980 NMFS/S1 22 Synopsis of biological data on Euthynnus - H.O. Yoshida 1979 NMFS/S1 23 Synopsis of biological data on the rock crab, Cancer irroratus TE. Bigford, 1979 1979 NMFSIS1 24 Synopsis of biological data on the frigate tuna (Auxis thazard) and the bullet tuna (Aux!s rochei) - RN. Uchida 1980 FAO Fisheries Synopsis No. 128 FIR/5128 (Distribution restricted) SAST - Panulir.s cygnus - 2,29(OlU01,l5 SYNOPSIS OF BIOLOGICAL DATA ON THE WESTERN ROCK LOBSTER Panulirus cygnus George, 1962 Prepared by B.F. Phillips G.R. Morgan C.1. Austin CSIRO Division of Fisheries Western Australian Marine Loology Department and Oceanography Research Laboratories University of Western Australia P.O. Box 21 P.O. Box 20 Nedlands, WA, Australia 6009 Cronulla NSW, Australia 2230 North Beach WA, Australia 6020 (Presently at Kuwait Institute for Scientific Research) FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS Rome 1980 The designations employed and the presentation of material in this publication do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of theUnited Nations concerning thelegal Status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. M42 ISBN 92-5-1OlO25-X The copyright in this book is vested in the Food and Agriculture Orga- nization of the IJnited Nations. The book may not be reproduced, in whole or in part, by any method or process, without written permission from the copyright holder.Applications for such permission, with a statement of the purpose and extent of the reproduction desired, should be addressed to the Director, Publications Division, Food and Agriculture Organization of the United Nations, Via delle Terme di Caracalla, 00100 Rome, Italy. © FAO 1980 PREPARATION OF THIS SYNOPSIS Due to a temporary interruption in the publication of CSIRO Species Synopsis, and in view of the desirability of making available this up-to-date account on the valuable Western rock lobster fishery without delay, it was decided, upon request of the CSIRO Division of Fisheríes and Oceanography, to include the present document in the FAO Species Synopsis series. AUSTRACT This synopsis reviews all available data on identity, distribution, life history, population dynamics, exploita- tion, protection, management and artificial cultivation of the western rock lobster,Panulirus cygnusGeorge, 1962, Distribution For bibliographic purposes this document should be cited as follows: Authors FAO Fisheries Department Phillips, B.F.,G.R. Morgan and C.M. Austin, FAO Regional Fisheries Officers 1980 Synopsis of biological data on the Regional Fisheries Councils and Commissions westernrocklobster,Panulirs Selector SM cygnus George, 1962. FAO Fish. Synop., (128):64 p. FIR/S128 Panulirus cygnus iii CONTENTS Page IDENTITY 1 1.1 Nomenclature i 1.11 Valid name i 1.2 Taxonomy 1 1.21 Affinities 1 1.22 Taxonomic status 6 1.23 Subspecies 6 1.24 Standard common names, vernacular names 6 1.3 Morphology 6 1.31 External morphology 6 2 DISTRIBUTION 7 2.1 Total Area 7 2.2 Differential Distribution 9 2.21 Larvae and juveniles 9 2.22 Adults 9 2.3 Determinants of Distribution Changes 10 2.31 Currents 10 2.32 Temperature 10 2.33 Food 10 2.34 Light 10 2.35 Salinity 11 2.36 Behaviour 11 2.4 Hybridization 11 3 BIONOMICS AND LIFE HISTORY li 3.1 Reproduction 11 3.11 Sexuality 11 3.12 Maturity 11 3.13 Mating 12 3.14 Fertilization 12 3.15 Gonads 12 3.16 Spawning 13 3.17 Spawn 14 3.2 Pre-Adult Phase 14 3.21 Embryonic 14 3.22 Larval phase 15 3.3 Juvenile and Adult Phase 19 3.31 Longevity 19 3.32 Hardiness 19 3.33 Competitors 20 3.34 Predators 20 3.35 Parasites, diseases, injuries and abnormalities 20 iv PIR/S128 Panulirus Cygnus Page 3.4 Nutrition and Growth 21 3.41 Feeding 21 3.42 Food 21 3.43 Growth rate 22 3.44Metabolism 27 3.5 Behaviour 29 3.51 Migration and local movements 29 3.52 Schooling 29 3.53Responses to stimuli 32 4 POPULATION 33 4.1 Structure 33 4.11 Sex ratio 33 4.12Age composition 36 4.13 Size composition 36 4.2 Abundance and Density 37 4.21 Average abundance 37 4.22 Changes in abundance 37 4.23 Average density 37 4.24 Changes in density 40 4.3 Natality and Recruitment 40 4.31 Reproduction rates 40 4.32 Factors affecting reproduction 40 4.33 Recruitment 40 4.4 Mortality and Morbidity 43 4.41 Mortality rates 43 4.42 actors causing or affecting mortality 43 4.5 Dynamics of the Population 45 4.6 The Population in the Community and the Ecosystem 46 5 EXPLOITATION 47 5.1 Fishing Equipment 47 5.11Gear 47 5.12Boats 49 5.2Fishing Areas 49 5.21 General geographic distribution 49 5.22Geographical ranges 49 5.23Depth ranges 52 5.3 Fishing Season 52 5.31General pattern of season(s) 52 5.32Dates of beginning, peak and end of season 53 5.33Variation in date or duration of season 53 FIR/S128Panuliu cygnus Page 5.4Fishing Operations and Results 53 5.41Effort and intensity 53 5.42 Selectivity 54 5.43 Catches 54 6 PROTECTION AND MANAGEMENT 54 6.1 Regulatory (Legislative) Measures 54 6.11Limitation or reduction to total catch 54 7 ARTIFICIAL CULTIVATION 59 7.1 Procurement of Stocks 59 7.2 Spawning 59 7.3Development Times 59 7.4 Survival 59 7.5 Foods, Feeding 59 7.6 Parasites, Diseases and Their Control 59 7.7 Commercial Application 59 8 REFERENCES 60 FIR/Sl28 Panulirus cygnus i IDENTITY - Diagnosis ll Nomenclature Adult specimens of P. cygnus (Figure 1) are readily separated from the two most closely related 1.11Valid name species,Panulirusjaponicus (von Siebold, 1824) and P. longipes longipes (A. I4ilne-Edwards, 1868). Panulirus cygnus George, 1962 Although the colour (brick-red) and colour 1.2 Taxonomy patterns are very similar, the following charac- teristics distinguish P. cygnus f rom P. japonicus: 1.21 Affinities The antennular plate of P. cygnus has Suprageneric 4-8 spines arranged in two rows behind the principal pair of spines (Figure 2c), Kingdom Animalia whereas P. japonicus has no spines or a Subkingdom Metazoa few very small spinules in this position Phylum Arthropoda (Figure 2f) Class Crustacea Subclass Malacostraca The transverse grooves of the second to Series Eumalacostraca fifth abdominal segments of P.
Recommended publications
  • Lobsters-Identification, World Distribution, and U.S. Trade

    Lobsters-Identification, World Distribution, and U.S. Trade

    Lobsters-Identification, World Distribution, and U.S. Trade AUSTIN B. WILLIAMS Introduction tons to pounds to conform with US. tinents and islands, shoal platforms, and fishery statistics). This total includes certain seamounts (Fig. 1 and 2). More­ Lobsters are valued throughout the clawed lobsters, spiny and flat lobsters, over, the world distribution of these world as prime seafood items wherever and squat lobsters or langostinos (Tables animals can also be divided rougWy into they are caught, sold, or consumed. 1 and 2). temperate, subtropical, and tropical Basically, three kinds are marketed for Fisheries for these animals are de­ temperature zones. From such partition­ food, the clawed lobsters (superfamily cidedly concentrated in certain areas of ing, the following facts regarding lob­ Nephropoidea), the squat lobsters the world because of species distribu­ ster fisheries emerge. (family Galatheidae), and the spiny or tion, and this can be recognized by Clawed lobster fisheries (superfamily nonclawed lobsters (superfamily noting regional and species catches. The Nephropoidea) are concentrated in the Palinuroidea) . Food and Agriculture Organization of temperate North Atlantic region, al­ The US. market in clawed lobsters is the United Nations (FAO) has divided though there is minor fishing for them dominated by whole living American the world into 27 major fishing areas for in cooler waters at the edge of the con­ lobsters, Homarus americanus, caught the purpose of reporting fishery statis­ tinental platform in the Gul f of Mexico, off the northeastern United States and tics. Nineteen of these are marine fish­ Caribbean Sea (Roe, 1966), western southeastern Canada, but certain ing areas, but lobster distribution is South Atlantic along the coast of Brazil, smaller species of clawed lobsters from restricted to only 14 of them, i.e.
  • Download (8MB)

    Download (8MB)

    https://theses.gla.ac.uk/ Theses Digitisation: https://www.gla.ac.uk/myglasgow/research/enlighten/theses/digitisation/ This is a digitised version of the original print thesis. Copyright and moral rights for this work are retained by the author A copy can be downloaded for personal non-commercial research or study, without prior permission or charge This work cannot be reproduced or quoted extensively from without first obtaining permission in writing from the author The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the author When referring to this work, full bibliographic details including the author, title, awarding institution and date of the thesis must be given Enlighten: Theses https://theses.gla.ac.uk/ [email protected] ASPECTS OF THE BIOLOGY OF THE SQUAT LOBSTER, MUNIDA RUGOSA (FABRICIUS, 1775). Khadija Abdulla Yousuf Zainal, BSc. (Cairo). A thesis submitted for the degree of Doctor of Philosophy to the Faculty of Science at the University of Glasgow. August 1990 Department of Zoology, University of Glasgow, Glasgow, G12 8QQ. University Marine Biological Station, Millport, Isle of Cumbrae, Scotland KA28 OEG. ProQuest Number: 11007559 All rights reserved INFORMATION TO ALL USERS The quality of this reproduction is dependent upon the quality of the copy submitted. In the unlikely event that the author did not send a com plete manuscript and there are missing pages, these will be noted. Also, if material had to be removed, a note will indicate the deletion. uest ProQuest 11007559 Published by ProQuest LLC(2018).
  • Factors Affecting Growth of the Spiny Lobsters Panulirus Gracilis and Panulirus Inflatus (Decapoda: Palinuridae) in Guerrero, México

    Factors Affecting Growth of the Spiny Lobsters Panulirus Gracilis and Panulirus Inflatus (Decapoda: Palinuridae) in Guerrero, México

    Rev. Biol. Trop. 51(1): 165-174, 2003 www.ucr.ac.cr www.ots.ac.cr www.ots.duke.edu Factors affecting growth of the spiny lobsters Panulirus gracilis and Panulirus inflatus (Decapoda: Palinuridae) in Guerrero, México Patricia Briones-Fourzán and Enrique Lozano-Álvarez Universidad Nacional Autónoma de México, Instituto de Ciencias del Mar y Limnología, Unidad Académica Puerto Morelos. P. O. Box 1152, Cancún, Q. R. 77500 México. Fax: +52 (998) 871-0138; [email protected] Received 00-XX-2002. Corrected 00-XX-2002. Accepted 00-XX-2002. Abstract: The effects of sex, injuries, season and site on the growth of the spiny lobsters Panulirus gracilis, and P. inflatus, were studied through mark-recapture techniques in two sites with different ecological characteristics on the coast of Guerrero, México. Panulirus gracilis occurred in both sites, whereas P. inflatus occurred only in one site. All recaptured individuals were adults. Both species had similar intermolt periods, but P. gracilis had significantly higher growth rates (mm carapace length week-1) than P. inflatus as a result of a larger molt incre- ment. Growth rates of males were higher than those of females in both species owing to larger molt increments and shorter intermolt periods in males. Injuries had no effect on growth rates in either species. Individuals of P. gracilis grew faster in site 1 than in site 2. Therefore, the effect of season on growth of P. gracilis was analyzed separately in each site. In site 2, growth rates of P. gracilis were similar in summer and in winter, whereas in site 1 both species had higher growth rates in winter than in summer.
  • Lobsters LOBSTERS§

    Lobsters LOBSTERS§

    18 Lobsters LOBSTERS§ All species are of high commercial value locally and internationally. Five species occur in reasonable numbers in Kenya: Panulirus homarus, Panulirus ornatus, Panulirus versicolor, Panulirus penicillatus and Panulirus longipes. These are caughtungravid along and the the coast young by weighing the artisanal more fishing than 250 fleet. g. Landings One species, of these Puerulus species angulatus are highest in the north coast particularly the Islands of Lamu District. The fishery has been declining,Scyllaridae. but currently The latter the fishermen are also caught are only as by–catch allowed toby landshallow the , is caught by the industrial fishing fleet in off–shore waters, as well as members of the family water prawn trawling but areTECHNICAL commercially unimportant, TERMS AND utilized MEASUREMENTS as food fish by local people. and whip–like antennal flagellum long carapace length tail length pereiopod uropod frontal telson horn III III IV VIV abdominal segments tail fan body length antennule (BL) antennular plate strong spines on carapace PALINURIDAE antenna carapace length abdomen tail fan antennal flagellum a broad, flat segment antennules eye pereiopod 1 pereiopod 5 pereiopod 2 SCYLLARIDAE pereiopod 3 pereiopod 4 Guide to Families 19 GUIDE TO FAMILIES NEPHROPIDAE Page 20 True lobsters § To about 15 cm. Marine, mainly deep waters on soft included in the Guide to Species. 1st pair of substrates. Three species of interest to fisheriespereiopods are large 3rd pair of pereiopods with chela PALINURIDAE Page 21 Antennal Spiny lobsters § To about 50 cm. Marine, mostly shallow waters on flagellum coral and sand stone reefs, some species on soft included in the Guide to Species.
  • A Time Series of California Spiny Lobster (Panulirus Interruptus) Phyllosoma from 1951 to 2008 Links Abundance to Warm Oceanogr

    A Time Series of California Spiny Lobster (Panulirus Interruptus) Phyllosoma from 1951 to 2008 Links Abundance to Warm Oceanogr

    KOSLOW ET AL.: LOBSTER PHYLLOSOMA ABUNDANCE LINKED TO WARM CONDITIONS CalCOFI Rep., Vol. 53, 2012 A TIME SERIES OF CALIFORNIA SPINY LOBSTER (PANULIRUS INTERRUPTUS) PHYLLOSOMA FROM 1951 TO 2008 LINKS ABUNDANCE TO WARM OCEANOGRAPHIC CONDITIONS IN SOUTHERN CALIFORNIA J. ANTHONY KOSLOW LauRA ROGERS-BENNETT DOUGLAS J. NEILSON Scripps Institution of Oceanography California Department of Fish and Game California Department of Fish and Game University of California, S.D. Bodega Marine Laboratory 4949 Viewridge Avenue La Jolla, CA 92093-0218 UC Davis, 2099 Westside Rd. San Diego, CA 92123 ph: (858) 534-7284 Bodega Bay, CA 94923-0247 [email protected] ABSTRACT The California spiny lobster (Panulirus interruptus) population is the basis for a valuable commercial and recreational fishery off southern California, yet little is known about its population dynamics. Studies based on CalCOFI sampling in the 1950s indicated that the abun- dance of phyllosoma larvae may be sensitive to ocean- ographic conditions such as El Niño events. To further study the potential influence of environmental variabil- ity and the fishery on lobster productivity, we developed a 60-year time series of the abundance of lobster phyl- losoma from the historical CalCOFI sample collection. Phyllosoma were removed from the midsummer cruises when the early-stage larvae are most abundant in the plankton nearshore. We found that the abundance of the early-stage phyllosoma displayed considerable inter- annual variability but was significantly positively corre- Figure 1. Commercial (solid circles), recreational (open triangles), and total lated with El Niño events, mean sea-surface temperature, landings (solid line) of spiny lobster off southern California.
  • On the Vaccination of Shrimp Against White Spot Syndrome Virus

    On the Vaccination of Shrimp Against White Spot Syndrome Virus

    On the vaccination of shrimp against white spot syndrome virus Jeroen Witteveldt Promotoren: Prof. dr. J. M. Vlak Persoonlijk Hoogleraar bij de Leerstoelgroep Virologie Prof. dr. R. W. Goldbach Hoogleraar in de Virologie Co-promotor Dr. ir. M. C. W. van Hulten (Wetenschappelijk medewerker CSIRO, Brisbane, Australia) Promotiecommissie Prof. dr. P. Sorgeloos (Universiteit Gent, België) Prof. dr. J. A. J. Verreth (Wageningen Universiteit) Prof. dr. ir. H. F. J. Savelkoul (Wageningen Universiteit) Dr. ir. J. T. M. Koumans (Intervet International, Boxmeer, Nederland) Dit onderzoek werd uitgevoerd binnnen de onderzoekschool ‘Production Ecology and Resource Conservation’ (PE&RC) On the vaccination of shrimp against white spot syndrome virus Jeroen Witteveldt Proefschrift ter verkrijging van de graad van doctor op het gezag van de rector magnificus van Wageningen Universiteit, Prof. dr. M. J. Kropff, in het openbaar te verdedigen op vrijdag 6 januari 2006 des namiddags te vier uur in de Aula Jeroen Witteveldt (2006) On the vaccination of shrimp against white spot syndrome virus Thesis Wageningen University – with references – with summary in Dutch ISBN: 90-8504-331-X Subject headings: WSSV, vaccination, immunology, Nimaviridae, Penaeus monodon CONTENTS Chapter 1 General introduction 1 Chapter 2 Nucleocapsid protein VP15 is the basic DNA binding protein of 17 white spot syndrome virus of shrimp Chapter 3 White spot syndrome virus envelope protein VP28 is involved in the 31 systemic infection of shrimp Chapter 4 Re-assessment of the neutralization
  • Taxonomy, Biology and Distribution of Lobsters

    Taxonomy, Biology and Distribution of Lobsters

    Taxonomy, Biology and Distribution of Lobsters 15 Rekha Devi Chakraborty and E.V.Radhakrishnan Crustacean Fisheries Division, Central Marine Fisheries Research Institute, Kochi-682 018 Lobsters are among the most prized of fisheries resources and of significant commercial interest in many countries. Because of their high value and esteemed culinary worth, much attention has been paid to lobsters in biological, fisheries, and systematic literature. They have a great demand in the domestic market as a delicacy and is a foreign exchange earner for the country. Taxonomic status Phylum: Arthropoda Subphylum: Crustacea Class: Malacostraca Subclass: Eumalacostraca Superorder: Eucarida Order: Decapoda Suborder: Macrura Reptantia The suborder Macrura Reptantia consists of three infraorders: Astacidea (Marine lobsters and freshwater crayfishes), Palinuridea (Spiny lobsters and slipper lobsters) and Thalassinidea (mud lobsters). The infraorder Astacidea Summer School on Recent Advances in Marine Biodiversity Conservation and Management 100 Rekha Devi Chakraborty and E.V.Radhakrishnan contains three superfamilies of which only one (the Infraorder Palinuridea, Superfamily Eryonoidea, Family Nephropoidea) is considered here. The remaining two Polychelidae superfamilies (Astacoidea and parastacoidea) contain the 1b. Third pereiopod never with a true chela,in most groups freshwater crayfishes. The superfamily Nephropoidea (40 chelae also absent from first and second pereiopods species) consists almost entirely of commercial or potentially 3a Antennal flagellum reduced to a single broad and flat commercial species. segment, similar to the other antennal segments ..... Infraorder Palinuridea, Superfamily Palinuroidea, The infraorder Palinuridea also contains three superfamilies Family Scyllaridae (Eryonoidea, Glypheoidea and Palinuroidea) all of which are 3b Antennal flagellum long, multi-articulate, flexible, whip- marine. The Eryonoidea are deepwater species of insignificant like, or more rigid commercial interest.
  • Large Spiny Lobsters Reduce the Catchability of Small Conspecifics

    Large Spiny Lobsters Reduce the Catchability of Small Conspecifics

    Vol. 666: 99–113, 2021 MARINE ECOLOGY PROGRESS SERIES Published May 20 https://doi.org/10.3354/meps13695 Mar Ecol Prog Ser OPEN ACCESS Size matters: large spiny lobsters reduce the catchability of small conspecifics Emma-Jade Tuffley1,2,3,*, Simon de Lestang2, Jason How2, Tim Langlois1,3 1School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia 2Aquatic Science and Assessment, Department of Primary Industries and Regional Development, 39 Northside Drive, Hillarys, WA 6025, Australia 3The UWA Oceans Institute, Indian Ocean Marine Research Centre, Cnr. of Fairway and Service Road 4, Crawley, WA 6009, Australia ABSTRACT: Indices of lobster abundance and population demography are often derived from pot catch rate data and rely upon constant catchability. However, there is evidence in clawed lobsters, and some spiny lobsters, that catchability is affected by conspecifics present in pots, and that this effect is sex- and size-dependent. For the first time, this study investigated this effect in Panulirus cyg nus, an economically important spiny lobster species endemic to Western Australia. Three studies: (1) aquaria trials, (2) pot seeding experiments, and (3) field surveys, were used to investi- gate how the presence of large male and female conspecifics influence catchability in smaller, immature P. cygnus. Large P. cygnus generally reduced the catchability of small conspecifics; large males by 26−33% and large females by 14−27%. The effect of large females was complex and varied seasonally, dependent on the sex of the small lobster. Conspecific-related catchability should be a vital consideration when interpreting the results of pot-based surveys, especially if population demo graphy changes.
  • Magnetic Remanence in the Western Atlantic Spiny Lobster, Panulirus Argus

    Magnetic Remanence in the Western Atlantic Spiny Lobster, Panulirus Argus

    J. exp. Biol. 113, 29-41 (1984) 29 Printed in Great Britain © The Company of Biologists Limited 1984 MAGNETIC REMANENCE IN THE WESTERN ATLANTIC SPINY LOBSTER, PANULIRUS ARGUS BY KENNETH J. LOHMANN* Department of Zoology, University of Florida, Gainesville, FL 32611, U.SA. and C. V. Whitney Laboratory for Experimental Marine Biology and Medicine, University of Florida, Route 1, Box 121, St Augustine, FL 32086, U.SA. Accepted 3 May 1984 SUMMARY The magnetic characteristics of 15 western Atlantic spiny lobsters (Panulirus argus) were analysed with a superconducting cryogenic magnetometer. Each specimen possessed a significant natural remanent magnetization (NRM) and isothermal remanent magnetization (IRM), in- dicating that ferromagnetic material is present. Analyses of the distribution of total remanence and mass-specific remanence indicate that magnetic material is concentrated in the cephalothorax, particularly in tissue associated with the fused thoracic ganglia. Mass-specific remanence and the total quantity of magnetic material in the cephalothorax and abdomen both increase as functions of carapace length. The NRM is significantly orientated in at least four regions of the body. The NRM of the left half of the posterior cephalothorax is directed pos- teriorly, while that of the right half is orientated anteriorly. In addition, the NRM of the middle cephalothorax is orientated toward the right side of the animal; the NRM of the telson-uropods region is directed toward the left. The functional significance of these regions of orientated remanence is not known, but such a pattern could result from the ordered alignment of per- manently magnetic particles comprising a magnetoreceptor system. INTRODUCTION The magnetic field of the earth influences the orientation of organisms ranging from unicellular algae (Lins de Barros, Esquivel, Danon & De Oliveira, 1981) and bacteria (Blakemore, 1975; Blakemore, Frankel & Kalmijn, 1980) to birds (e.g.
  • Biological Oceanography of Western Rock Lobster & the Recent Recruitment Failure

    Biological Oceanography of Western Rock Lobster & the Recent Recruitment Failure

    Biological Oceanography of Western Rock Lobster & the recent recruitment failure Peter Thompson | Program Leader CSIRO Marine and Atmospheric Research WEALTH FROM OCEANS Co‐authors and Project Team Anya M. Waite, UWA Lynnath Beckley, Murdoch Univ. Christin Säwström, UWA Megan Saunders, UWA Ming Feng, CSIRO Nick Caputi, Fisheries Dept. WA R.V. Southern Surveyor, Australia’s Simon DeLestang, Fisheries Dept. of WA Marine National Facility Andrew Jeffs & Richard O’Rorke, Univ. of Auckland Roger Barnard, Lobster Harvest Nik Sachlikidis, Queensland DPI Major Funding: Marine National Facility Fisheries Research Development Corporation 2 The Western Rock Lobster Fishery 50 years of ‘good’ management, first fishery to be given Marine Stewardship endorsement Larval stage Australia’s most valuable fishery, $450 million Phyllosoma 11 months Catch could be accurately predicted from recruitment at sea! Puerulus stage collected and counted, correlated with adult population Collector, left on reef for ~ month Collectors at red symbols The Western Rock Lobster Fishery Australia’s most valuable fishery, $450 million Recruitment failure in 2007 Allowable catch halved in 2011 to 5,000 tonnes Rat Island Seven Mile Beach Jurien Lancelin Alkimos 300 Por t Gr gy Warnbro C Mentelle Quobba 250 200 / collector) 150 n 100 Puerulus ( 50 0 68/69 72/73 76/77 80/81 84/85 88/89 92/93 96/97 00/01 04/05 08/09 Season Fault Tree MOTIVATION La Nina El Nino Trends in chlorophyll on West Australian shelf • 29 and 31°S = North El Nino La Nina 1998N 30 1998S • 31 to 33°S = South 1999N 20 1999S ) • High SOI (La Niña) years -3 2000N 10 2000S have greater annual 2001N mean chla 0 2001S 28 2002N -10 2002S 29 2003N anomaly (µg m (µg anomaly 30 a -20 2003S N 31 chl SeaWiFS 2004N -30 2004S estimated chla Latitude S 2005N 32 Perth Western -40 2005S Australia 33 -20 -10 0 10 20 2006N annual mean SOI 2006S 34 113 114 115 116 *Adapted from Thompson, PA , Baird, ME, Ingleton, T, Doblin, MA.
  • Disease of Aquatic Organisms 100:89

    Disease of Aquatic Organisms 100:89

    Vol. 100: 89–93, 2012 DISEASES OF AQUATIC ORGANISMS Published August 27 doi: 10.3354/dao02510 Dis Aquat Org OPENPEN ACCESSCCESS INTRODUCTION Disease effects on lobster fisheries, ecology, and culture: overview of DAO Special 6 Donald C. Behringer1,2,*, Mark J. Butler IV3, Grant D. Stentiford4 1Program in Fisheries and Aquatic Sciences, School of Forest Resources and Conservation, University of Florida, Gainesville, Florida 32653, USA 2Emerging Pathogens Institute, University of Florida, Gainesville, Florida 32610, USA 3Department of Biological Sciences, Old Dominion University, Norfolk, Virginia 23529, USA 4European Union Reference Laboratory for Crustacean Diseases, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth Laboratory, Weymouth, Dorset DT4 8UB, UK ABSTRACT: Lobsters are prized by commercial and recreational fishermen worldwide, and their populations are therefore buffeted by fishery practices. But lobsters also remain integral members of their benthic communities where predator−prey relationships, competitive interactions, and host−pathogen dynamics push and pull at their population dynamics. Although lobsters have few reported pathogens and parasites relative to other decapod crustaceans, the rise of diseases with consequences for lobster fisheries and aquaculture has spotlighted the importance of disease for lobster biology, population dynamics and ecology. Researchers, managers, and fishers thus increasingly recognize the need to understand lobster pathogens and parasites so they can be managed proactively and their impacts minimized where possible. At the 2011 International Con- ference and Workshop on Lobster Biology and Management a special session on lobster diseases was convened and this special issue of Diseases of Aquatic Organisms highlights those proceed- ings with a suite of articles focused on diseases discussed during that session.
  • Approaching Marine Biodiversity Assessments Using Acoustic Methods

    Approaching Marine Biodiversity Assessments Using Acoustic Methods

    Listening forward: approaching marine royalsocietypublishing.org/journal/rsos biodiversity assessments using acoustic methods Review Cite this article: Mooney TA, Iorio LD, Lammers T. Aran Mooney1, Lucia Di Iorio2, Marc Lammers3, M, Lin T-H, Nedelec SL, Parsons M, Radford C, 4 5 6 Urban E, Stanley J. 2020 Listening forward: Tzu-Hao Lin , Sophie L. Nedelec , Miles Parsons , approaching marine biodiversity assessments Craig Radford7, Ed Urban8 and Jenni Stanley1 using acoustic methods. R. Soc. Open Sci. 7: 201287. 1Biology Department, Woods Hole Oceanographic Institution, 266 Woods Hole Road, http://dx.doi.org/10.1098/rsos.201287 Woods Hole, MA 02543, USA 2CHORUS Institute, Phelma Minatec, 3 parvis Louis Néel, 38000 Grenoble, France 3Hawaiian Islands Humpback Whale National Marine Sanctuary, 726 South Kihei Road, Kihei, HI 96753, USA 4Biodiversity Research Center, Academia Sinica, 128 Academia Road, Section 2, Nankang, Received: 20 July 2020 Taipei 11529, Taiwan Accepted: 5 August 2020 5Biosciences, College of Life and Environmental Sciences, Hatherly Laboratories, University of Exeter, Prince of Wales Road, Exeter EX4 4PS, UK 6Australian Institute of Marine Science, Perth, Western Australia 6009, Australia 7Institute of Marine Science, Leigh Marine Laboratory, University of Auckland, PO Box 349, Warkworth 0941, New Zealand Subject Category: 8Scientific Committee on Oceanic Research, University of Delaware, Newark, DE 19716, USA Organismal and Evolutionary Biology TAM, 0000-0002-5098-3354 Subject Areas: Ecosystems and the communities they