Journal of Shellfish Research articles from April 2006

Journal of Shellfish Research archives from April 2006

The whelk dredge fishery of Delaware.
April 1, 2006... ABSTRACT The status of the Delaware whelk dredge fishery was assessed from state landings reports and from data collected by an onboard observer. Mean annual whelk landings for 1994 to 2000 were 18.5 mt of meats and increased to 241.6 mt for...

Effects of diets, their concentrations and clam size on filtration rate of hard clams (Meretrix lusoria).
April 1, 2006... ABSTRACT The hard clam (Meretrix lusoria) is one of the most important cultured molluscs in Taiwan. Although it is mainly cultured in ponds and supplemental feeding of artificial feed is commonly practiced, no scientific information on its...

Growth rate and longevity of Dreissena polymorpha (Pallas): a review and recommendations for future study.
April 1, 2006... ABSTRACT We review the variety of methods that have been used over the last 50 y in the Former Soviet Union, Eastern and Western Europe, and recently in North America to determine growth rate and longevity in zebra mussels (Dreissena polymorpha...

Population structure in two marine invertebrate species (Panopea abrupta and Strongylocentrotus franciscanus) targeted for aquaculture and enhancement in British Columbia.
April 1, 2006... ABSTRACT As the number of native species targeted for aquaculture and enhancement in British Columbia (BC) rises, fisheries managers must develop policies and species-specific management plans that facilitate industry expansion while protecting...

Substrate effects on survival, growth and dispersal of juvenile sea scallop, Placopecten magellanicus (Gmelin 1791).
April 1, 2006... ABSTRACT In the scope of expanding seeding operations of juvenile scallops (Placopecten magellanicus) around Iles-de-la-Madeleine (Quebec, Canada), this study assesses the influence of substrate on growth, survival, dispersal and predation...

Bivalve contribution to shallow sandy bottom food web off mar del plata (Argentina): inference from stomach contents and stable isotope analysis.
April 1, 2006... ABSTRACT Two infaunal species, the purple clam Amiantis purpurata and the razor clam Solen tehuelchus, are common species in the 15-20 m sandy bottom sediments between southern Brazil and central Argentina. Both species are food sources for the...

Morphological, structural and functional characteristics of the hemocytes of the oyster, Crassostrea ariakensis.
April 1, 2006... ABSTRACT Light and electron microscopical studies were carried out to characterize the hemocytes of the oyster, Crassostrea ariakensis. Three types of hemocytes were recognized: granulocytes, large hyalinocytes and small hyalinocytes. The large...

Advanced Perkinsus marinus infections in Crassostrea ariakensis maintained under laboratory conditions.
April 1, 2006... ABSTRACT The Suminoe oyster, Crassostrea ariakensis, has been under investigation since the early 1990s for potential use in restoring the commercial harvest or for aquaculture of oysters in the Chesapeake Bay, USA. Initial studies focusing on...

Age and growth of wild suminoe (Crassostrea ariakensis, Fugita 1913) and Pacific (C. gigas, Thunberg 1793) oysters from Laizhou Bay, China.
April 1, 2006... ABSTRACT Shell height at age estimates from Suminoe (Crassostrea ariakensis) and Pacific (C. gigas) oysters from a natural oyster reef in Laizhou Bay, China were compared with shell height at age estimates from triploid C. ariakensis of known...

Understanding the success and failure of oyster populations: climatic cycles and perkinsus marinus.
April 1, 2006... ABSTRACT Perkinsus (=Dermocystidium) marinus is a major cause of mortality in eastern oysters, Crassostrea virginica. Because initiation of infection and progression of disease are favored by high temperature and high salinity, we hypothesized...

An AFLP approach to identify genetic markers associated with resistance to vibrio vulnificus and Perkinsus marinus in eastern oysters.(arbitrary fragment length polymorphism)
April 1, 2006... ABSTRACT We conducted an arbitrary fragment length polymorphism (AFLP) analysis followed by tests of association to search for potential genetic markers associated with resistance to infection by Vibrio vulnificus and Perkinsus marinus in a...

Seasonal changes in dry mass and energetic content of Munida subrugosa (crustacea: decapoda) in the beagle channel, Argentina.
April 1, 2006... ABSTRACT Munida subrugosa is the most abundant benthic species in the Beagle Channel (55[degrees]S, 68[degrees]W), Tierra del Fuego. Moreover, this species has two simultaneous but different feeding habits: predator and deposit feeder. Because...

The interaction of salinity and Na/K ratio in seawater on growth, nutrient retention and food conversion of juvenile Litopenaeus Vannamei.
April 1, 2006... ABSTRACT The effects of salinity, Na/K ratio and their interaction on growth, molting, nutrient retention and food conversion of Litopenaeus vannamei were investigated. The test shrimp were reared in artificial seawater and fed fresh polychaete...

Influence of feeding on hepatopancreas structure and digestive enzyme activities in Penaeus monodon.
April 1, 2006... ABSTRACT This study examines the influence of feeding on digestive enzyme activities in the black tiger prawn, Penaeus monodon, using histological and biochemical techniques. Juvenile P. monodon (>50 mm total length) were sacrificed after...

Application of an egg production index to determine reproductive period of the brown shrimp Farfantepenaeus californiensis near Agiabampo, Sonora-Sinaloa, Mexico.
April 1, 2006... ABSTRACT Using the percentage of mature females as an index, the reproductive period of the brown shrimp, Farfantepenaeus californiensis, off the coast of Sonora in Mexico, has been shown to occur throughout the year with two peaks of mass...

Comparison of domoic acid concentration in king scallops, Pecten maximus from seabed and suspended culture systems.
April 1, 2006... ABSTRACT Domoic acid (DA) the toxin responsible for amnesic shellfish poisoning (ASP) has proven problematic for king scallop Pecten maximus fisheries and aquaculture in Ireland. Toxin concentration in hepatopancreas of individual scallops and...

Symposium on Molluscan Fisheries And Aquaculture.(World Congress of Malacology)(Brief article)
April 1, 2006... The World Congress of Malacology was held on the campus of The University of Western Australia from July 11 to 16, 2004. The Congress, with a theme of Molluscan Megadiversity: Sea Land and Freshwater, attracted 300 mollusc workers from...

An assessment of the environmental impact of wild harvest pearl aquaculture (Pinctada maxima) in western Australia.
April 1, 2006... ABSTRACT Typical operating procedures used in the wild harvest pearl aquaculture (Pinctada maxima) industry in Western Australia are described as a basis for examining the potential environmental impact of the industry. A risk analysis workshop...

The roles of bacteria and micro and macro algae in abalone aquaculture: a review.
April 1, 2006... ABSTRACT Abalone aquaculture is dependent on cultured algae to induce larval settlement and as a food source for the early life stages of abalone until formulated feed or macroalgae such as Macrocystis sp., Porphyra sp. and Ulva sp. are...

Effect of the pollutants lead, zinc, hexadecane and octocosane on total growth and shell growth in the akoya pearl oyster, Pinctada imbricate.
April 1, 2006... ABSTRACT Pearl oysters (Pinctada imbricata) were held in the laboratory and exposed to various levels of the heavy metals lead and zinc and the aliphatic hydrocarbons hexadecane and octacosane for 2 months. Individual oysters were followed over...

The Roe's abalone fishery near the Perth metropolitan area, Western Australia.
April 1, 2006... ABSTRACT The recreational Roe's abalone fishery is concentrated on easily accessible reefs that adjoin metropolitan Perth in Western Australia. There is a restricted recreational fishing season of 1.5 h a morning, for six consecutive Sundays in...

Transport and recruitment of silver-lip pearl oyster larvae on Australia's North West shelf.
April 1, 2006... ABSTRACT Silver-lip pearl oyster (Pinctada maxima) spat surveyed in the Eighty Mile Beach section of the North West Shelf have been used in conjunction with outputs from a particle dispersion model to identify likely spawning grounds. The...

Effects of season, temperature control, broodstock conditioning period and handling on incidence of controlled and uncontrolled spawning of greenlip abalone (Haliotis laevigata donovan) in western Australia.
April 1, 2006... ABSTRACT Managing the broodstock conditioning process is important to the successful establishment of an abalone industry that can reliably produce juveniles from captive stock and pursue selective breeding. Four conditioning periods of 6, 8,...

Influence of conditioning diet and spawning frequency on variation in egg diameter for Greenlip abalone, Haliotis laevigata.
April 1, 2006... ABSTRACT Both nutrient provisioning of eggs, during development within the ovary, and egg diameter are believed to be important factors governing the development and survival of invertebrate larvae. The diet of female broodstock and the...

Growth, mortality, recruitment and sex-ratio in wild stocks of silver-lipped pearl oyster Pinctada maxima (Jameson) (mollusca: pteriidae), in western Australia.
April 1, 2006... Growth, mortality, recruitment and sex-ratio of wild stocks of the silver-lipped pearl oyster Pinctada maxima were studied at sites spanning the geographic extent of the commercial fishery using mark-recapture experiments, recruitment cohort...

In pursuit of cost-effective fisheries enhancement of New South Wales blacklip abalone, Haliotis rubra (leach) fishery.
April 1, 2006... ABSTRACT The diverse and often complex essential components of successful marine stock enhancement are briefly reviewed. Progress on a project to enhance the New South Wales blacklip abalone (Haliotis rubra) fishery is discussed to demonstrate...

Expressed sequence tag analysis of genes expressed during development of the tropical abalone Haliotis asinine.
April 1, 2006... ABSTRACT The tropical abalone, Haliotis asinina, is an ideal species to investigate the molecular mechanisms that control development, growth, reproduction and shell formation in all cultured haliotids. Here we describe the analysis of 232...

Diseases of pearl oysters and other molluscs: a Western Australian perspective.
April 1, 2006... ABSTRACT Mollusc culture, particularly the cultivation of pearl oysters, is an important component of the aquaculture industry in Western Australia. As a result, there has been a long-term investment in surveys of commercial mollusc species for...

Growth and survival of juvenile greenlip abalone (Haliotis laevigata) feeding on germlings of the macroalgae ulva sp.
April 1, 2006... ABSTRACT Germlings of the green alga Ulva sp. were developed as a diet for juvenile Haliotis laevigata ([greater than or equal to]3.5 mm shell length) and compared with a current commercial diet consisting of Ulvella lens plus the diatom...

Growth rate estimation of Hexaplex (Trunculariopsis) trunculus (gastropoda: muricidae) based on mark/recapture experiments in the Ria Formosa lagoon (Algarve coast, southern Portugal).
April 1, 2006... ABSTRACT This study reports growth rates estimates for Hexaplex (Trunculariopsis) trunculus (Gastropoda: Muricidae) from mark/recapture experiments carried out in the Ria Formosa lagoon (Algarve coast, southern Portugal). A total of 726...

Erratum.(Correction notice)
April 1, 2006... ADDENDUM TO: DIOXIN AND HEAVY-METAL CONTAMINATION OF SHELLFISH AND SEDIMENTS IN ST. LOUIS BAY, MISSISSIPPI AND ADJACENT MARINE WATERS RALPH ELSTON, EDWIN W. CAKE, JR., KAREN HUMPHREY, WAYNE C. ISPHORDING, ROD O'CONNOR AND J. E. (JACK)...