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The 6th International Conference And Workshop On Lobster Biology And Management: An Introduction, Mark J. Butler Iv

Biological Sciences Faculty Publications

Every three years or so, the International Conference and Workshop on Lobster Biology and Management (ICWL) brings together lobster scientists, fishery managers, and industry representatives from around the world for a week of scientific presentations, workshops, and discussions on lobster biology and management. The first ICWL was held in Perth, Australia, in January 1977. Its purpose was to bring together a small group of lobster researchers from the USA and Australia to discuss common issues and themes. That initial workshop spawned a continuing series of meetings that have become the international lobster conference for scientists—the equivalent of an international congress …

Fisheries Research Report No. 123 - Review Of Productivity Levels Of Western Australian Coastal And Estuarine Waters For Mariculture Planning Purposes, Alan Pearce, Stuart Helleren, Mark Marinelli, Fisheries Western Australia

Fisheries Research Reports

The measurement of chlorophyll-a (a simple estimate of phytoplankton biomass) is often used as an indicator of water quality. Chlorophyll measurements are relatively sparse for most of the Western Australian continental shelf, although there are areas such as the Perth metropolitan coastal zone, Wilson Inlet and the Albany harbours where some intensive studies have been undertaken.

This review of both published and unpublished chlorophyll concentrations in Western Australian waters has shown a high degree of variability in space (both horizontally and vertically) and time, and statistics on the seasonal distribution of chlorophyll have been derived for those regions with sufficient …

Fisheries Research Report No. 124 - The Evaluation Of A Recreational Fishing Stock Enhancement Trial Of Black Bream (Acanthopagrus Butcheri) In The Swan River, Western Australia, C J. Dibden, G. Jenkins, Gavin A. Sarre, R C J Lenanton, Suzanne G. Ayvazian

Fisheries Research Reports

During 1995, a study was undertaken to monitor and evaluate the recovery of Swan River black bream stock which had been supplemented with fish produced from a captive-breeding program. Fish were individually tagged and subsequently released into the Swan River. The objectives of the study were (a) to determine both the survival and the growth rate to a size at which hatchery-reared fish could enter the recreational fishery and (b) whether they could then be caught by the recreational fishers. Of the 767 fish released into the upper Swan River on 28 March 1995, 97 fish (12.6%) were recaptured to …

Effects Of Blood Extraction On The Mortality Of The Horseshoe Crab, Limulus Polyphemus, Elizabeth A. Walls, Jim Berkson

Virginia Journal of Science

Horseshoe crabs (Limulus polyphemus) are bled by biomedical companies for the extraction of Limulus Amoebocyte Lysate (LAL), a clotting agent used in the detection of endotoxins. In 1998, the Atlantic States Marine Fisheries Commission mandated that all biomedical companies collecting horseshoe crabs for the production of LAL study the horseshoe crab mortality rates resulting from the company's blood extraction process. BioWhittaker, a Cambrex Company is one of the largest producers of LAL in the world. During the summer of 1999, bled and unbled horseshoe crabs were transported from BioWhittaker's bleeding facility in Chincoteague, Virginia to the Virginia Seafood …

Biological And Physical Observations On Larval Spot (Leiostomus Xanthurus) Recruiting To Oregon And Ocracoke Inlets North Carolina, Thomas R. Wasaff

Biological Sciences Theses & Dissertations

Patterns of abundance, length, age, and growth of larval spot (Leiostomus xanthurus) were compared to assess the variability between spot larvae ingressing to two North Carolina inlets. The source of variability for the recruitment of larval fishes to estuarine nurseries has been linked to environmental stochasticity. Wind data and seasurface temperature satellite images were analyzed as two influential environmental variables that may help explain recruitment variability. As part of the South Atlantic Bight Recruitment Experiment (SABRE), spot larvae were collected between October 1994 and April 1995 as they recruited to Pamlico Sound through Oregon Inlet, located north of Cape Hatteras, …

Burrow Morphology And Behavior Of The Mud Shrimp Upogebia Omissa (Decapoda: Thalassinidea: Upogebiidae), Vania Rodrigues Coelho, Roland Arthur Cooper, Sergio De Almeida Rodrigues

Collected Faculty Scholarship

The burrow morphology, burrowing behavior and feeding mechanisms of the thalassinidean shrimp Upogebia omissa were studied. Twenty burrow casts were made in situ with epoxy resin, and an overall 'Y' shape was most frequently observed. Several burrows consisted of a single, oblique tunnel; burrow diameter was positively correlated with burrow length, maximum depth and distance between openings. Additionally, burrow length was positively associated with maximum depth, indicating that as burrow length increased burrow depth increased; i.e. burrows spread vertically rather than horizontally. Total sediment displacement by the burrows accounted for 2.6 % of sediment to a depth of 30 cm. …

Comparative Systematics Of Subterranean Amphipod Crustaceans In The Families Crangonyctidae And Bogidiellidae, Stefan Koenemann

Biological Sciences Theses & Dissertations

The research project presented in this doctoral dissertation deals with the systematics of two different taxonomic groups of subterranean amphipods (Crustacea). Therefore, rather than being a single project, this study is divided into several sub-projects. Altogether, the chapters for the sub-projects are composed of five publications. An introductory chapter and a summarizing discussion are added to provide a structural unit for the collection of papers and to compare the results of the individual projects.

The thesis investigates the systematics of the amphipod families Bogidiellidae Hertzog, 1936, and Crangonyctidae Bousfield, 1973. Based on descriptive taxonomy according to modern standards, revisions are …

Fisheries Research Report No. 121 - Synopsis Of The Biology And Exploitation Of The Blue Swimmer Crab, Portunus Pelagicus Linnaeus, In Western Australia, Mervi I. Kangas

Fisheries Research Reports

This report summarises the existing studies which have provided information on the biology, population characteristics and exploitation of the blue swimmer crab, Portunus pelagicus, in Western Australia. Gaps in the existing knowledge are also highlighted to assist in targeting new research initiatives. Portunus pelagicus matures at about one year and in temperate regions females mate only once a year. This is because mature crabs moult only once a year. It appears from studies to date that Western Australian crabs are one genetic population. This is being further investigated. Migration of the blue swimmer crab occurs between estuaries and the ocean …

Comparison Of Larval Myomere Counts Among Species Of Nocomis In Virginia (Actinopterygii: Cyprinidae), Terre D. Green, Eugene G. Maurakis

Virginia Journal of Science

Larval myomere counts of Nocomis platyrhynchus were made using a dissecting light microscope equipped with polarizing filters, and then compared to those of the three other species of Nocomis (Nocomis leptocephalus, Nocomis micropogon, and Nocomis raneyi) found in Virginia. Average preanal myomere counts for N. platyrhynchus (26.9) were significantly different from those of the other three species (N. raneyi =28.7; N. micropogon =26.0; and N. leptocephalus =25.9). This is especially important as larvae of N. leptocephalus, the only other species of Nocomis syntopic with N. platyrhynchus in the upper New River drainage, can now …

Feeding Habits Of Young-Of-Year Striped Bass, Morone Saxatilis, And White Perch, Morone Americana, In Lower James River, Va, Paul J. Rudershausen, Joseph G. Loesch

Virginia Journal of Science

A total of 188 young-of-year (YOY) striped bass, Morone saxatilis, and 199 YOY white perch, Morone americana, were collected by pushnet, seine and trawl during 24-hour periods from June through August, 1992 in lower James River, Virginia. The purpose was to identify prey and temporal and spatial feeding habits. Copepods were the most numerous prey of both species. Fishes and mysids comprised the largest volumetric percentage of diets of striped bass and white perch, respectively. Using an index of relative importance, leptodorids and copepods were the most important prey of striped bass and white perch, respectively. Both species …

Fish Health For Fish Farmers - 2nd Edition, Tina Thorne

Fisheries Published Reports

2nd edition.

Disease is a departure from the normal state of health of a fish or any other animal. Diseases have no doubt occurred among fishes since these animals have occupied a place on the earth. Scientific efforts to understand the causes of disease in fishes, and to attempt to control them however, have only been made during the last sixty years.

Fishes, crustaceans and molluscs, as with other animals are subject to a wide spectrum of diseases, that can be classified as infectious or non-infectious. The vast majority of disease problems in the intensive farming of aquatic animals can …

Ontogeny, Reproduction, And Population Dynamics Of Stoplephorus Baganensis And Thryssa Kammalensis (Pisces : Engraulididae) In A Malaysian Estuary Sarpedonti, Valerie, Valerie Sarpedonti

Student Works (2000-2009)

Larval ontogeny of Stolephorus baganem:;is and Thryssa kammalensis, comprises three successive phases characterized by: (I) development of swimming appendages, (2) changes in allometric growth of various body parts, and (3) increase in body depth, as well as eye diameter, in the case of S. baganensis. Both anchovy species are multiple spawners, spawning all year round but varying in intensity. Mass spawnings of S bagane11sis start in the first (summer) inter-monsoon period and last for four months. This period is associated with changes in the wind field and increased rainfall, dissolved oxygen and food availability. The presence of mature adults during …

Bulletin No 4315 - Western Australia's Agricultural, Food & Fisheries Industries 1999 - 2000, Besko Trhuij, Francis D'Emden

Bulletins 4000 -

Fifth Edition (revised and updated) December 2000.

Western Australia’s agriculture and fisheries industries have an international reputation for providing premium quality food and fibre produce to customers around the world.

The State of Western Australia is setting the international quality standard in the production of a vast array of food, fibre and fisheries products.

Agriculture Western Australia has developed the Safe Quality Food System (SQF2000), which not only meets stringent world food standards, but is being adopted in many countries as a unique trademark of quality.

Free of many pests, diseases and pollution found elsewhere, the State offers produce sourced …

Department Of Fisheries Annual Report Highlights 1999 - 2000, Department Of Fisheries, Western Australia

Department of Fisheries Annual Reports

1999/2000 has marked a 'sea change' in fisheries management throughout Australia towards the principles of Ecologically Sustainable Development (ESD). This is a dynamic concept with an evolving framework that requires a balancing of social, economic and environmental considerations.

The principles of ESD - of using, conserving and enhancing the community's resources so that ecological processes, on which life depends, are maintained, and the total quality of fisheries, now and in the future, can be increased - are vital in a state, national and international context for Fisheries WA and its clients. Having fisheries that are governed under ESD principles is …

Syncoelium Vermilionensis Sp. N., (Hemiuroidea: Syncoeliidae) And New Records For Members Of Azygiidae, Ptychogonimidae, And Syncoeliidae Parasitizing Elasmobranchs In The Gulf Of California, Stephen S. Curran, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty Publications

During July-September 1993 and May 1996, a survey of the metazoan parasites of 817 elasmobranchs from the Gulf of California, representing 42 species, was conducted at 14 sites along the western portion of the Gulf of California. Elasmobranchs were obtained from local commercial fishers. In this paper, we report all digeneans collected during the survey, excluding the gorgoderids, which will be presented in a subsequent paper. Four species from three hemiuroid families were collected, none of which was known previously from the Gulf of California. Syncoelium vermilionensis sp. n. (Syncoeliidae), a species that differs most notably from its congeners by …

Review Of The Western Australian Pilchard Fishery 12 -16 April 1999, K. L. Cochane

Fisheries Management Papers

A workshop was held on Monday 12 April 1999 at which presentations were made by representatives of Fisheries WA, speakers from other state fisheries agencies and the Western Australian (WA) pilchard industry. This workshop identified some of the key concerns in the assessment and management of the fishery. This report presents the conclusions reached by the reviewer at the end of the process, which were also presented to members of the WA pilchard fishing industry in Albany on Friday 16 April.

Pfiesteria Piscicida And Dinoflagellates Similar To Pfiesteria, Harold G. Marshall

Virginia Journal of Science

Pfiesteria pisiccida is a microscopic, unicellular organism that is classified as both a mixotrophic and heterotrophic dinoflagellate, which has been associated with both fish deaths and a cause of human illness (Burkholder et al., 1992; Glasgow et al., 1995; Burkholder and Glasgow, 1997). This species possesses a complex life cycle that includes motile forms (e.g. zoospores, gametes, amoebae) and a cyst stage that may remain dormant in the sediment (Burkholder et al., 1995b). Pfiesteria piscicida is known to have toxin and non-toxin producing populations, where cyst transformation into the toxic motile zoospores may be initiated by the presence of certain …

Fisheries Research Report No. 114 - The Western Australian Scallop Industry, D C. Harris, L M. Joll, R A. Watson

Fisheries Research Reports

Five separate commercial fisheries target the saucer scallop, Amusium balloti (Bernadi 1861) in Western Australian waters. While the average annual catch from these fisheries is around 600 tonnes of scallop meat, past catches have been highly variable with annual landings ranging from 150 to 4,400 tonnes of meat worth between $2 and $59 million. Consequently, scallops represent one of the larger single-species fisheries operating in Western Australia (WA).

A. balloti has a distribution spanning most of the WA coast, from Broome in the north around to Esperance in the south. Despite this extensive distribution, saucer scallops tend to be restricted …

Draft Shark Bay Pink Snapper Management Plan 1999, Fisheries Western Australia.

Fisheries Management Papers

This draft management plan was prepared by the Fisheries Department on 12 July 1999 for the Minister for Fisheries for the purpose of facilitating consultation in resepct of the proposal by the Minister to determine a new Management Plan for the Shark Bay Pink Snapper Fishery.

Modeling The Msx Parasite In Eastern Oyster (Crassostrea Virginica) Populations. Iii. Regional Application And The Problem Of Transmission, Eric N. Powell, John M. Klinck, Susan E. Ford, Eileen E. Hofmann, Stephen J. Jordon

CCPO Publications

A model of transmission for Haplosporidium nelsoni, the disease agent for MSX disease, is developed and applied to sites in Delaware Bay and Chesapeake Bay. The environmental factors that force the oyster population- H. nelsoni model are salinity, temperature, food, and total suspended solids. The simulated development of MSX disease was verified using 3 time series of disease prevalence and intensity: 1960 to 1970 and 1980 to 1990 for Delaware Bay, and 1980 to 1994 for Chesapeake Bay, and for a series of sites covering the salinity gradient in each bay. Additional simulations consider the implications of assumptions made …

Modeling The Msx Parasite In Eastern Oyster (Crassostrea Virginica) Populations. Ii. Salinity Effects, Michelle C. Paraso, Susan E. Ford, Eric N. Powell, Eileen E. Hofmann, John M. Klinck

CCPO Publications

An oyster population model coupled with a model for Haplosporidium nelsoni, the causative agent of the oyster disease MSX, was used with salinity time-series constructed from Delaware River flow measurements to study environmentally-induced variations in the annual cycle of this disease in Delaware Bay oyster populations. Model simulations for the lower Bay (high salinity) sire reproduced the annual cycle observed in lower Delaware Bay. Simulations at both upper Bay (low salinity) and lower Bay sites produced prevalences and intensities that were consistent with field observations. At all sites, low freshwater discharge resulted in increased disease levels, whereas high freshwater …

Modeling The Msx Parasite In Eastern Oyster (Crassostrea Virginica) Populations. I. Model Development, Implementation, And Verification, Susan Ford, Eric Powell, John Klinck, Eileen Hofmann

CCPO Publications

A mathematical model simulating the host-parasite-environmental interactions of eastern oysters (Crassostrea virginica) and the pathogen, Haplosporidium nelsoni, which causes MSX disease, has been developed. The model has 2 components. One replicates the infection process within the oyster and the other simulates transmission. The infection-development component relies on basic physiological processes of both host and parasite, modified by the environment, to reproduce the observed annual prevalence cycle of H. nelsoni. Equations describing these rates were constructed using data from long-term field observations, and field and laboratory experiments. In the model, salinity and temperature have direct effects upon …

Department Of Fisheries Annual Report 1998/99, Department Of Fisheries, Western Australia

Department of Fisheries Annual Reports

In accordance with Section 62 of the Financial Administration and Audit Act 1985, I submit for your information and presentation to Parliament the Annual Report of the Fisheries Department for the financial year ending 30 June 1999.

The Annual Report of Fisheries WA has been prepared in accordance with the provisions of the Financial and Administration and Audit Act 1985 and Secon 263 of the Fish Resouces Management Act 1994.

Habituation, Novelty Response, And Object Differentiation In The Weakly Electric Fish, Brachyhypopomus Pinnacaudatus, Gregory J. Scott

Dissertations and Theses

Weakly electric fish use a combination of active electrolocation and passive mechanosensory receptors for object detection and analysis. When tested with repeated presentations of the same moving object, Brachyhypopomus pinnacaudatus showed a gradual habituation of its electric organ pacemaker acceleration response (novelty response) that was unaltered by changes in the replacement electric organ discharge (S1). When tested with objects of differing velocities, the novelty response of the fish was proportional to the change in velocity of object. The responses of fish to objects that presented different mechanosensory profiles, but equal electrosensory profiles, suggest that the fish used the electrosensory system …

Radiocarbon From Nuclear Testing Applied To Age Validation Of Black Drum, Pogonias Cromis, Steven E. Campana, Cynthia M. Jones

OES Faculty Publications

Radiocarbon ((14)C) in the world's oceans increased sharply between 1950 and 1970 as a result of the atmospheric testing of nuclear weapons. Through comparison with the (14)C time series reconstructed from atmospheric measurements and marine carbonates, Kalish, in 1993, used the (14)C concentration measured in fish otolith cores as a means of confirming the annulus-based age estimates for some South Pacific fish species. Here we report the pre-and postbomb (14)C chronology of North Atlantic adult black drum (Pogonias cronis), assumed to be between 15 and 42 yr of age on the basis of otolith annulus counts. According to …

A Strategy For The Future Management Of The Joint Authority Northern Shark Fishery. A Discussion Paper., Tim Bray, Jo Kennedy

Fisheries Management Papers

This paper discusses the current status of the Joint Authority Northern Shark Fishery (JANSF), and the major issues affecting it. The main aim of the document is to present a seires of recommendations to enable effective future management of this resource. The paper provides a brief introduction to the JANSF, followed by an examination of the resource base of the fishery (primary species, stock distribution and stock assessment).

Western Rock Lobster Management - Options And Issues, Kevin Donohue

Fisheries Management Papers

Following the Rock Lobster Industry Advisory Committee meeting of the 3 March 1998 the Minister has advised that his position is that there will be no management changes for the 1998/99 season. The purpose of this paper is primarily to provide information explaining management options and issues for consideration of the long term management of the fishery. The paper is divided into three main sections which detail options that have been identified as having the potential to increase the catch value over the next three years. In the first section, an option for enhancing the catch value by transferring lobsters …

Fisheries Research Report No. 110 - A Research Vessel Survey Of Bottom Types In The Area Of The Abrolhos Islands And Mid-West Trawl Fishery., C. J. Dibden, L. M. Joll

Fisheries Research Reports

To address the concern expressed by Commercial rock lobster fishers operating in the Abrolhos Islands area, that expanding saucer scallop trawl activity was damaging the sea floor biota in areas which they considered good rock lobster habitat and poor scallop habitat, an underwater video survey was conducted by the Fisheries Department Research Division, with the following objectives:

1. Examine, classify and map the benthic habitat of areas currently and historically trawled for scallops in the Abrolhos Islands area and adjacent waters;

2. Examine, classify and map the benthic habitat of areas adjacent to these trawled areas, where potential for conflict …

Fisheries Management Report No. 2 - Use Of Market Mechanisms For The Allocation Of Commercial Fishing Access Entitlements In Western Australia, Economics Consulting Services Pty Ltd

Fisheries Published Reports

This publication has been prepared as a discussion paper on the potential use of market-based mechanisms for allocating commercial fishing entitlements in Western Australia. The aim has been to explore alternative mechanisms for allocating entitlements and the circumstances under which various methods might be more effective.

Fisheries Management Report No. 4 - Planning For The Further Development Of The Aquaculture And Marine Farming Industry At Jurien Bay, Dave Everall

Fisheries Published Reports

There is a well documented global requirement for some twenty million tonnes of edible sea foods from aquaculture in the next fifteen years. Most of the projected increase in production will need to be from mariculture because of limiting factors on land based aquaculture. At present, approximately 85%of all aquaculture occurs in the Asian region.

Globally, temperate water species have market advantages because of their ability to supply a growing market preference for a firm white fleshed fin fish. Although significant temperate water aquaculture occurs in various countries north of the equator, there are growing environmental concerns surrounding production of …