Journal of Shellfish Research articles from December 2006

Journal of Shellfish Research archives from December 2006

Development and application of techniques for prediction of the scallop Pecten maximus (L.) spatfall.
December 1, 2006... ABSTRACT Over five million spat of the king scallop, Pecten maximus (L.) were collected accidentally in the North Water of Mulroy Bay in County Donegal, Ireland in the summer of 1979. This large natural settlement, by far the greatest number...

Heterosis between two stocks of the bay scallop, Argopecten irradians irradians Lamarck (1819).
December 1, 2006... ABSTRACT Heterosis between two stocks (A and B) of the bay scallop Argopecten irradians irradians (Lamarck, 1819) was studied by comparing performance in hatching success, larval survival, larval, spat and adult growth of reciprocal hybrid...

Sediment selection by juvenile sea scallops (Placopecten magellanicus (gmelin)), sea stars (Asterias vulgaris verrill) and rock crabs (Cancer irroratus say).
December 1, 2006... ABSTRACT We examined sediment selection by juvenile sea scallops (Placopecten magellanicus) and their predators, sea stars (Asterias vulgaris) and rock crabs (Cancer irroratus). In laboratory trials, groups of scallops (~30 mm shell height)...

Effect of microalgal concentration and water temperature on the physiology of the Caribbean scallops Argopecten nucleus and Nodipecten nodosus.
December 1, 2006... ABSTRACT Argopecten nucleus and Nodipecten nodosus are two Caribbean scallops occurring in Colombia, which have recently been selected for artificial culture based on their high commercial value. As part of an effort to develop culture...

Sequence analysis of the ribosomal DNA internal transcribed spacers and 5.8S ribosomal RNA gene in representatives of the clam family veneridae (Mollusca: Bivalvia).
December 1, 2006... ABSTRACT The first and second internal transcribed spacer (ITS1 and ITS2) regions of the ribosomal DNA from six species, Meretrix meretrix, Cyclina sinensis, Mercenaria mercenaria, Protothaca jedoensis, Dosinia corrugata and Ruditapes...

Ampelisca amphipod tube mats may enhance abundance of northern quahogs Mercenaria mercenaria in muddy sediments.
December 1, 2006... ABSTRACT Field surveys in southeastern Raritan Bay and laboratory studies from 1999 to 2005 were conducted to compare the characteristics of mud and sand habitats in relation to the abundance of the northern quahog (Mercenaria mercenaria). In...

Reproductive pattern of the squalid callista Megapitaria squalida from Northwestern Mexico.
December 1, 2006... ABSTRACT The annual reproductive cycle of the squalid callista Megapitaria squalida living in the Ojo de Liebre lagoon was analyzed from January to December 2001. The reproductive activity was analyzed qualitatively (through histological...

Restriction enzyme digestion chromosome banding on two commercially important venerid bivalve species: ruditapes decussatus and Cerastoderma edule.
December 1, 2006... ABSTRACT Reliable banding techniques are a major necessity for the genetic research in marine bivalves. Restriction enzyme banding (HaeIII) was performed, in this study, on chromosomes of two commercially important species of veneroid bivalves:...

The hypoxic tolerance of the protobranch bivalve Nucula sulcata bronn.
December 1, 2006... ABSTRACT Examination of the hypoxic tolerance of Nucula sulcata determined that the mean survival time under hypoxia was 9.57 d with a maximum longevity of 30 d. Comparison between the three species, N. sulcata, N. nitidosa, and N. nucleus...

Reproductive cycle of the razor clam Solen marginatus (Pulteney 1799) in Spain: a comparative study in three different locations.
December 1, 2006... ABSTRACT The reproductive cycle of the razor clam Solen marginatus (Pulteney 1799) was studied in three different locations of Spain. Sampling was performed in the natural beds of: Eo Estuary (NW Spain) in 1994 to 1995, Santander Bay (N Spain)...

Parasites of the stout razor clam Tagelus plebeius (Psammobiidae) from the Southwestern Atlantic Ocean.
December 1, 2006... ABSTRACT This work describes the parasites and their respective pathologies in the stout razor clam, Tagelus plebeius (Lightfoot, 1786) (Psammobiidae) from Argentinean coasts. It represents the first report about a histopathological survey for...

Comparison of assimilation efficiency on diets of nine phytoplankton species of the greenshell mussel Perna canaliculus.
December 1, 2006... ABSTRACT The greenshell mussel Perna canaliculus is the most important species in aquaculture in New Zealand. Mussel energetics and growth rates are subject to the natural variability in phytoplankton biomass and species composition and thus...

Ageing and metabolism of Mytilus edulis: populations from various climate regimes.
December 1, 2006... ABSTRACT The aim of this study is to elucidate the impact of age and temperature on metabolic key parameters (respiration rate and mitochondrial marker enzymes) controlling maximal size and longevity in the blue mussel Mytilus edulis L. from...

Valve-gape response times in mussels (Mytilus edulis)--effects of laboratory preceding-feeding conditions and in situ tidally induced variation in phytoplankton biomass.
December 1, 2006... ABSTRACT Many physiological processes in bivalves are influenced by the valve opening sate and thus the valve opening-closing response times of the experimental animals. Controlled laboratory studies using underwater video camera recording of...

Growth, production and economic evaluation of earthen ponds for monoculture and polyculture of juveniles spotted babylon (Babylonia areolata) to marketable sizes using large-scale operation.
December 1, 2006... ABSTRACT The study was conducted to determine the feasibility for growing-out of the spotted babylon juveniles (Babylonia areolata) to marketable sizes with the large-scale operation of 20.0 x 20.0 x 1.5 m earthen ponds at Petchaburi province,...

The invasive rapa whelk Rapana venosa (valenciennes 1846): status and potential ecological impacts in the Rio de la Plata estuary, Argentina-Uruguay.
December 1, 2006... ABSTRACT Recent range extensions of the invasive rapa whelk Rapana venosa, biological data of the population and possible ecological impacts on the food webs of the Rio de la Plata estuary are presented. A total of 41 rapa whelks and 21 egg...

Reproductive cycle of the purple snail Plicopurpura pansa (Gould 1853) from two locations at Baja California Sur, Mexico.
December 1, 2006... ABSTRACT The reproductive cycle of purple snail, Plicopurpura pansa (Gould 1853), sampled randomly monthly over a period of 20 mo at Playa Cerritos at the Pacific, and Punta Perico at the Gulf of California, Baja California Sur, Mexico, was...

Effects of water temperature on the lysosomal membrane stability in hemocytes of blacklip abalone, Haliotis rubra (leach).
December 1, 2006... ABSTRACT Neutral red retention (NRR) assay was used to evaluate the effect of changes in water temperature on lysosomal membrane integrity in the hemolymph of blacklip abalone, Haliotis rubra. Results from gradual temperature changes between...

Growth and development of veined rapa whelk Rapana venosa veligers.
December 1, 2006... ABSTRACT Planktonic larvae of benthic fauna that can grow quickly in the plankton and reduce their larval period duration lessen their exposure to pelagic predators and reduce the potential for advection away from suitable habitats. Veined rapa...

Gastropod abundance and biomass relationships with salt marsh vegetation within ocean-dominated South Carolina, USA estuaries.
December 1, 2006... ABSTRACT Molluscs, both gastropods and bivalves, appear to disproportionately influence the dynamics of salt marsh habitats. Bivalves typically are facilitators positively affecting the growth and survival of marshes, but gastropods may have...

Long-term variability in spat collections of the blacklip pearl oyster (Pinctada margaritifera) in Solomon Islands.
December 1, 2006... ABSTRACT Temporal variation in abundance of spat of the blacklip pearl oyster (Pinctada margaritifera) was determined over an eight-year period at two sites, Gizo and Noro, in the Western Province of Solomon Islands. Spat were collected by...

The limits of morphometric features for the identification of black-lip pearl oyster (Pinctada margaritifera) larvae.
December 1, 2006... ABSTRACT As with most cultivated bivalves, culture of the Tahitian pearl oyster Pinctada margaritifera is particularly dependent on the natural environment, especially for spat supply. The ability to track in real time the abundance and the...

Relation of seasonal changes in the mass of the gonad and somatic tissues of the zebra ark shell Arca zebra to environmental factors.
December 1, 2006... ABSTRACT Over the period from June 2002 to June 2003, we examined the relationship of seasonal changes in the mass of the gonad and somatic tissues to environmental factors for four size groups of the zebra ark shell Arca zebra at Chacopata, in...

Non-invasive method to obtain DNA from freshwater mussels (Bivalvia: Unionidae).
December 1, 2006... ABSTRACT To determine whether DNA could be isolated from tissues obtained by brash-swabbing the mantle, viscera and foot, mantle-clips and swabbed cells were obtained from eight Quadrula pustulosa (Lea, 1831). DNA yields from clips and...

Effect of temperature, sexual maturity and sex on growth, food intake and gross growth efficiency in the "Pulpito" Octopus tehuelchus (d'Orbigny, 1834).
December 1, 2006... ABSTRACT The effects of temperature (10[degrees]C and 15[degrees]C), sexual maturity (immature and mature) and sex on instantaneous growth rates, daily feeding rates and gross growth efficiency were studied in the "Pulpito," Octopus tehuelchus...

Subcellular distribution of Ag, Cd, Co, Cu, Fe, Mn, Pb, and Zn in the digestive gland of the common cuttlefish Sepia officinalis.
December 1, 2006... ABSTRACT The subcellular fractionation of the digestive gland cells of the common cuttlefish Sepia officinalis was performed to investigate the distribution of metals between organelles and cytosol and the different cytosolic fractions...

Fecundity of Cancer johngarthi carvacho 1989 (Decapoda: Brachyura: Cancridae) from Southern Baja California's western coast, Mexico.
December 1, 2006... ABSTRACT Fifty-two ovigerous females of Cancer johngarthi were caught from the Baja California Peninsula's western coast, Mexico. Carapace length, carapace width and total weight of each specimen were registered. Fecundity estimates were...

Population genetic structure and genetic differentiation of Artemia parthenogenetica in China.
December 1, 2006... ABSTRACT Ten strains of Artemia parthenogenetica have been collected from inland salt lakes and coastal salterns in China. Ten diploid clones were selected from each Artemia parthenogenetica strain for analysis of the population genetic...

The growth of juvenile Chinese shrimp, Fenneropenaeus chinensis Osbeck, at constant and diel fluctuating temperatures.
December 1, 2006... ABSTRACT The growth, food consumption, food conversion efficiency and apparent digestibility coefficient of juvenile Chinese shrimp, Fenneropenaeus chinensis Osbeck (body weight 0.36 [+ or -] 0.04 g) were examined under different temperature...

Distribution and abundance of pelagic shrimps from the deep scattering layer of the eastern Arabian Sea.
December 1, 2006... ABSTRACT The sonic scattering layer (SSL) or deep scattering layer (DSL) of the eastern Arabian Sea of India is found in depths between surfaces to 750 m with varying thicknesses and in multiple layers. There is a distinct resident community of...

Indicators of performance in the fishery for shrimp Palaemon serratus (pennant) in Irish Coastal Waters.
December 1, 2006... ABSTRACT A commercial fishery for shrimp Palaemon serratus occurs on the south and west coasts of Ireland. Two temporal phases were identified: expansion from the mid 1970s to the late 1980s when maximum national landings were less than 150 t...

Distribution of the sea urchin Hemicentrotus pulcherrimus along a shallow bathymetric gradient in Onagawa Bay in Northern Honshu, Japan.
December 1, 2006... ABSTRACT Distribution of the sea urchin Hemicentrotus pulcherrimus was monitored monthly or bimonthly from April 1998 to May 1999 at a 100 [m.sup.2] permanent site in intertidal to subtidal zones at depths of up to 2.8 m in Onagawa Bay,...

Adaptation of ray's fluid thioglycollate medium assay to detect and quantify planktonic stages of Perkinsus spp. parasites.
December 1, 2006... ABSTRACT The parasites Perkinsus spp. are relatively easily and inexpensively detected in host tissues, but available methods to detect free-living planktonic stages are technologically complex and expensive. As a result, few studies have been...

Comparison of techniques for diagnosis of brown ring disease and detection of Vibrio tapetis in the Manila clam, Venerupis (Ruditapes) philippinarum.
December 1, 2006... ABSTRACT The bacterium, Vibrio tapetis, is the aetiological agent of Brown Ring Disease (BRD), which affects the Manila clam, Venerupis (Ruditapes) philippinarum. Two PCR assays for detection of V. tapetis were applied to a sample of 52 Manila...

Fluorometric measurement of oxidative burst in lobster hemocytes and inhibiting effect of pathogenic bacteria and hypoxia.
December 1, 2006... ABSTRACT The stimulation of hemocytes during phagocytosis leads to the generation of a series of oxygen radicals known as reactive oxygen species (ROS). Among these, hydrogen peroxide plays an important microbicidal role by directly killing...

An improved and rapid biochemical identification of indigenous aerobic culturable bacteria associated with Galician oyster production.
December 1, 2006... ABSTRACT An improved and rapid biochemical identification of the culturable aerobic bacteria species associated with Galician oyster production was performed by the combination of numerical taxonomy and sequencing of 16S rRNA gene. The 16S rRNA...

First detection of azaspiracids in mussels in North West Africa.
December 1, 2006... ABSTRACT Outbreaks of lipophilic toxins have been recorded in the north Atlantic coast of Morocco since 1999, but are rare in the Mediterranean coast. Samples of mussels from the Atlantic coast where toxicity was detected by mouse bioassay were...

Microscopic anatomy of foot of the spiny top shell, Batillus cornutus (lightfoot, 1786) (Gastropoda: Turbinidae).
December 1, 2006... ABSTRACT Foot structures of the spiny top shell, Batillus cornutus were investigated by light and transmission electron microscopy. The foot was composed of epithelial layer, connective tissue layer, and muscular layer from outside inward. The...

Biodiversity of sessile and motile macrofauna on intertidal oyster reefs in Mosquito Lagoon, Florida.
December 1, 2006... ABSTRACT Our research focused on determining the diversity and abundance of sessile and motile macrofauna that use intertidal reefs of the eastern oyster Crassostrea virginica for feeding, settlement space or refuge in Mosquito Lagoon, Florida....

A decision support tool for shellfish management in Mississippi Sound.
December 1, 2006... ABSTRACT The Eastern oyster (Crassostrea virginica) is an economically important fisheries resource along the US Gulf Coast and the eastern seaboard. In the past few years, Mississippi has ranked second in the country in shellfish production,...

Consumer evaluation of diploid and triploid Pacific oysters subjected to high pressure treatment.
December 1, 2006... ABSTRACT A sample of Australian oyster consumers evaluated the sensory quality of diploid and triploid Pacific oysters subjected to high pressure (HP) treatment with and without salt. Triploid and diploid oysters received comparable hedonic...

Erratum.(Correction notice)
December 1, 2006... TAQMAN[R] MGB REAL-TIME PCR APPROACH TO QUANTIFICATION OF PERKINSUS MARINUS AND PERKINSUS SPP. IN OYSTERS J. D. GAUTHIER, (1) * C. R. MILLER, (2) AND A. E. WILBUR (3) (1) Center for Marine Science, University of North Carolina Wilmington,...