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Fisheries Occasional Paper No. 20 - Management Of Western Rock Lobster Fishery - Advice To Stakeholders - Assessment Of Southern Zone Resource Sustainability Options, Department Of Fisheries, Western Australia

Fisheries Occasional Publications

The management options presented in this paper have been developed in close cooperation with the rock lobster industry to address the short-term sustainability and economic concerns regarding the level of exploitation and its impact on the breeding stock in the southern region. The main focus in the short-term is to consider options that reduce fishing effort during periods that may be economically inefficient to fish and at the same time reduce the level of exploitation.

The management package does not address the serious long-term sustainability or socioeconomic issues (e.g. cost pressures and related fleet capacity) facing the industry. If the …

Feeding Behavior And Conditioning In Two Heterotrophic Dinoflagellates, Todd A. Egerton

Biological Sciences Theses & Dissertations

Growth and abundance of heterotrophic dinoflagellate predators are generally attributed to the availability of algal prey. Several species of dinoflagellates feed on a wide variety of food types including fish. However the actual feeding preferences of dinoflagellates have been much less studied. In the few studies that have been carried out on dinoflagellate feeding preference, none have looked at possible factors that may affect preference. I conducted three experiments on the toxic dinoflagellate Pfiesteria piscicida and the related unnamed species Cryptoperidiniopsis brodyi which, (1) calculated the feeding preferences between algal Rhodomonas prey and fish blood cells and identified factors that …

A Sustainable Future For Recreational Fishing In The Cocos (Keeling) Islands. Proposal For Discussion., Department Of Fisheries.

Fisheries Management Papers

Fishing activity on the Cocos is essentially unmanaged at present and there has been some condern by the local community that a number of species, such as coral trout, have declined in numbers over the last decade. This draft strategy was developed by the Western Australian Department of Fisheries who now has responsibility for managing recreational fishing on behalf of the Commonwealth Department of Transport and Regional Services.

Fisheries Research Report No. 148 - Historical Distribution And Abundance Of The Australian Sea Lion (Neophoca Cinerea) On The West Coast Of Western Australia, Richard Campbell

Fisheries Research Reports

Analysis of historical patterns of abundance of the Australian sea lion on the west coast of Western Australia suggests that the population size was greater prior to the impacts of colonization and commercial sealing/whaling between the 18th and 20th centuries. In addition, it is evident that there has been a reduction in the number of breeding sites along the west coast, particularly around the greater Perth metropolitan area. There is limited evidence of the impact of indigenous hunting on the abundance and distribution of this species. The major impacts on Australian sea lion populations were a combination of subsistence and …

Access And Allocation Arrangements For The Commercial 'Wetline' Fisheries. Proposals For Discussion., Commercial Access Panel

Fisheries Management Papers

The Minister for Fisheries established this review of open access (wetline) commercial fishery arrangements to provide a more effective management framework for wetline fishing and to complement the recreational initiatives. This must involve the removal of excess fishing capacity, including latent effort, from the fishery and the establishment of a dedicated commercial fishery with clear entry criteria and an appropriate limit on catch in each bioregion. However it must be made clear that the ‘wetline review’ is not a sectoral resource sharing exercise. Following the implementation of new management arrangements for the ‘wetline’ fisheries, the appropriateness of the existing levels …

Proposed Management Arrangements For The West Coast Commercial 'Wetline' Fishery. A Discussion Paper., West Coast And Gascoyne Management Planning Panel

Fisheries Management Papers

The ‘Wetline Review’ was established to implement an effective management framework for the commercial sector to complement the recreational initiatives. It must be stressed at the outset that this review is focussed on the take of scalefish by the commercial sector. The levels of use between the various user groups in the West Coast region will be examined under the new integrated fisheries initiative following the implementation of new management arrangements for scalefish taken by the commercial sector.

Male Reproductive Dynamics In The Caribbean Spiny Lobster Panulirus Argus, Jamie S. Heisig

Biological Sciences Theses & Dissertations

The population size structure of the Caribbean Spiny Lobster, Panulirus argus, in the Florida Keys, Florida (USA) has undergone a dramatic shift as a result of fishing pressure on the large individuals of the population. Male lobsters are affected most by fishing because of sexual dimorphism in size and other studies have shown that male size has direct impacts on reproductive output (i.e., number of fertilized eggs/clutch) that are independent of female size. To assess more precisely the impact of male size on fertilization success, I conducted laboratory experiments and field observations to examine various male reproductive attributes over …

Fisheries Research Report No. 143 - Methods Used In The Collection, Preparation And Interpretation Of Narrow-Barred Spanish Mackerel (Scomberomorus Commerson) Otoliths For A Study Of Age And Growth In Western Australia, Paul Lewis, M. C. Mackie

Fisheries Research Reports

The narrow-barred Spanish mackerel (Scomberomorus commerson) is wide ranging throughout the Indo-West Pacific region where it has been the subject of various age and growth studies. Methods used in these studies have varied considerably and in some cases may have led to misleading conclusions. The purpose of this report, therefore, is to document in detail the methods used in determining the age and growth during a FRDC funded stock assessment of the species in the waters off Western Australia. These methods are considered to optimise the collection, processing, accuracy of microincrement counts, and interpretation of the annuli in both whole …

Workshop On Sustainable Development Of Marine Fish Farming In Wa, Peter Rogers, R Fletcher

Fisheries Management Papers

The purpose of this paper is twofold. First to provide an overview of the role of government and more particularly the Department of Fisheries and second to outline government expectations for aquaculture development agencies in the implementation of sustainable development initiatives and the effect this could have on the management of aquaculture within WA.

Review Of Recreational Take Of Coral In Western Australia. A Discussion Paper., Department Of Fisheries

Fisheries Management Papers

This discussion paper has been prepared by the Department of Fisheries (Western Australia) to address the issue of recreational collection of coral in coastal waters of Western Australia. The paper describes: • popular coral locations in WA; • management issues associated with the recreational collection of corals; • management objectives and strategies as possible options to address the issue of recreational collection of corals; and • seeks public input on the proposed management objectives and strategies.

Recruitment Variability Of Atlantic Croaker, Micropogonia Undulatus, With Observations On Environmental Factors, Sumalee Hoskin

Biological Sciences Theses & Dissertations

I examined entrance patterns of Atlantic croaker, Micropogonias undulatus by comparing the abundance, length, age and growth rates, of larvae as they entered Oregon and Ocracoke Inlets, NC. These biological factors were then compared against environmental factors to assess the influence the physical environment has on recruitment variability. Entrance abundance into Oregon Inlet was an order of magnitude higher than abundance into Ocracoke Inlet. However, the difference was influenced by three peak events in Oregon Inlet and non-parametric tests found no difference in median abundance between the two inlets. Mean standard length was smaller at Oregon Inlet than Ocracoke Inlet …

Reseeding Of Grazing Gastropods And Bivalves Into The Marine Environment In Western Australia, Jane Borg

Fisheries Management Papers

The Department of Fisheries does not want to embark on what is ‘new territory’ in Western Australia without a policy framework to define what is to happen, why it is to happen, and what will happen if the project does or does not succeed. This paper therefore attempts to do three things. 1. It sets in place accepted definitions of reseeding and stock enhancement within the general context of fisheries management in Western Australia. 2. It discusses the policy issues associated with reseeding grazing gastropods and bivalves into the natural environment. 3. It proposes a framework or process to be …

Processes For The Allocation, Reallocation And Governance Of Resource Access In Connection With A Framework For The Future Management Of Fisheries In Western Australia, Government Of Western Australia Department Of Fisheries

Fisheries Management Papers

This paper outlines the issues associated with developing a framework to deal explicitly with the allocation, reallocation and the governance of access to the fisheries resources of Western Australia.

Reproduction Of Black Drum, Pogonias Cromis, From The Chesapeake Bay Region, Brian K. Wells, Cynthia M. Jones

Virginia Journal of Science

Ovaries of black drum, Pogonias cromis, collected from the Chesapeake Bay region in 1992, were used to describe reproductive strategy and fecundity. Histological examination showed that black drum spawn in the Chesapeake Bay region from April through early June. Distributions of oocyte diameter showed distinct oocyte-developmental groups indicating that Chesapeake Bay black drum are group-synchronous batch spawners. Female black drum are extremely fecund ranging from 414,000 to 3,736,000 hydrated oocytes (mean = 1,389,000) per batch with a spawning periodicity of 3.8 days. Estimates of spawning strategy, spawning periodicity, and batch fecundity for black drum from the Chesapeake Bay region …

Episodic Rainfall Influences The Distribution And Abundance Of The Regular Sea Urchin Lytechinus Variegatus In Saint Andrew Bay, Northern Gulf Of Mexico, S. Anne Boettger, Larry E. Thompson, Stephen A. Watts, James B. Mcclintock, John M. Lawrence

Biology Faculty Publications

No abstract provided.

Draft Plan Of Management For The Cottesloe Reef Proposed Fish Habitat Protection Area., Fisheries Western Australia

Fisheries Management Papers

The aim of this management plan is to promote and encourage the protection and rehabilitation of the aquatic habitat at Cottesloe Reef and to involve the community in its management.

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, …

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 …

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.

The Impact Of Resident And Transient Predators On The Popultation Dynamics Of Juvenile Caribbean Spiny Lobster (Panulirus Argus) In Florida Bay, Florida, Jason Edward Schratwieser

Biological Sciences Theses & Dissertations

There has been a considerable amount of research devoted to exploring the relationship between predators and prey, but many of these studies fail to address how predation can vary over spatial and temporal scales. The tendency of ecologists to model predation as a static entity often masks its capacity for creating distinctive effects in prey populations and communities. Most predation studies also focus on the effect of a single species of predator on a prey population, an unrealistic situation in nature. In the Florida Keys, juvenile spiny lobsters are subjected to two general classes of predators: i) "resident" predators such …

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.

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 …

Effect Of Sampling Errors On Estimates Of Recruitment And Fishing Mortality From Separable Virtual Population Analysis, Emmanis Dorval

Biological Sciences Theses & Dissertations

Separable virtual population analysis (SVPA) models provide estimates of historical recruitment and fishing mortality from analyzing catch data based on the separability of fishing mortality into age specific-gear selection and yearly mortality. These models assume that the catch is randomly sampled and that sampling error is a random variable with constant variance and mean equal to zero. These models do not account for sampling measurement errors that occur when the catch partitioned by age is not measured on every sampling unit without error, and spatio-temporal errors that occur when the observed catch is not representative of the harvested population throughout …

Draft: Plan For The Management Of The Houtman Abrolhos Islands Fish Habitat Protection Area (Schedule 1), Abrolhos Islands Management Advisory Council, Fisheries Department Of Western Australia

Fisheries Management Papers

This document is a separate draft plan which has been prepared to meet the requirements of Section 117 of the Fish Resources Management Act 1994. It contains a description of the area; outlines the purposes for which the area is to be set aside; and lists the recommendations contained in Fisheries Management Paper No. 104, Management of the Houtman Abrolhos System, which relate to the management of the proposed Fish Habitat Protection Area.

Management Of The Houtman Abrolhos System, Abrolhos Islands Management Advisory Council, Fisheries Department Of Western Australia

Fisheries Management Papers

In November 1995 Cabinet resolved that the Minister for Fisheries would establish the Abrolhos Islands Management Advisory Committee (AIMAC) pursuant to Section 42 of the Fish Resources Management Act 1994. The role of AIMAC is to advise the Minister for Fisheries about the management of the Abrolhos Islands and the adjoining State Territorial Waters, as detailed in Section 2.2.3.1 of this report. The AIMAC has overseen the preparation of this report on behalf of the Minister for Fisheries. This draft report contains a brief description of the Abrolhos System and its special values. It also states goals and objectives for …

Discussion Paper: Future Management Of The Aquatic Charter Industry In Western Australia, Tour Operators Fishing Working Group

Fisheries Management Papers

The Tour Operators Fishing Working Group (TOFWG) was established by the Hon Monty House MLA, Minister for Fisheries, in recognition of the growing importance of this element of the tourism industry and in recognition of the need to ensure that the development of this industry occurs in an ecologically sustainable framework across the State. This discussion paper is the result of extensive consultation with the aquatic charter operators' industry by the TOFWG. Proposals outlined here for community discussion are intended to establish a management framework within which the aquatic charter operators’ industry may continue to develop, and which will ensure …

Draft: Optimising The Worth Of The Lobster Catch: Options And Issues, Marec Pty Ltd

Fisheries Management Papers

The purpose of this document is to contribute to informed discussion on alternative measures which might be adopted to optimise the worth of the lobster catch. In doing so, it provides a number of possible initiatives which could be more closely examined for adoption. Details of issues are provided which should be taken into consideration when assessing the various proposals. The industry as it is today is examined and assessed, and its achievements analysed. The possible initiatives proposed stem from this research. As a consequence of this document, the rock lobster industry could undertake to proceed with a detailed examination …

Marine Farm Planning And Consultation Processes In Western Australia, Dave Everall

Fisheries Management Papers

The development of a sustainable aquaculture industry in Western Australia is considered to be a high priority by the Government. The marine farming industry has a bright future in Western Australia, but there is a need to balance its developing needs for suitable waters with those of existing activities, and with community expectations for accountability and transparency in the resolution of equity and resource sharing decisions. The purpose of this report is to review the existing planning and consultation processes for pearling and aquaculture in WA and recommend how they may be improved and incorporated into a single process. It …