Journal of Shellfish Research articles from December 2008

Journal of Shellfish Research archives from December 2008

Evaluating northern quahog (= hard clam, Mercenaria mercenaria L.) restoration: are transplanted clams spawning and reconditioning?(Abstract)
December 1, 2008... ABSTRACT Spawner sanctuaries, harvest-free areas planted with high densities of adult clams, are currently being used to restore self-sustaining populations of Mercenaria mercenaria (L.) to Great South Bay, New York. To evaluate and guide this...

Testing the accuracy of morphological identification of northern quahog larvae.(Abstract)
December 1, 2008... ABSTRACT Bivalve larvae in mixed samples collected from the field have traditionally been identified through morphological differences among species. It is difficult, however, to use this method accurately because of overlapping size ranges and...

Effects of biogenic concretions, epibionts, and endobionts on the relative growth of the clam Venus verrucosa in Bizerta Lagoon, Tunisia.(Abstract)
December 1, 2008... ABSTRACT Monthly monitoring of the clam Venus verrucosa was carried out in the channel of Bizerta Lagoon (Tunisia) from September 2002 to August 2003. Approximately 100 individuals were collected on each occasion from between 7- and 9-m depth....

Effects of temperature regime on broodstock conditioning of Ruditapes decussatus.(Report)
December 1, 2008... KEY WORDS: broodstock, clam, hatchery, conditioning, Ruditapes decussatus, temperature INTRODUCTION The clam, Ruditapes decussatus is most preferred by consumers in Galicia (NW Spain) and also the most valuable. Culture of this marine...

Reproductive cycle of the subcrenated ark shell Scapharca kagoshimensis (Tokunaga, 1906) in Ariake Bay, Japan.(Abstract)
December 1, 2008... ABSTRACT The reproductive biology and glycogen content of a subcrenated ark shell Scapharca kagoshimensis (Tokunaga, 1906) in Ariake Bay were investigated from April 2004 to May 2005 in relation to environmental factors such as water...

Shell length-at-age relationships in James River, Virginia, oysters (Crassostrea virginica) collected four centuries apart.(Abstract)
December 1, 2008... ABSTRACT Eastern oysters were ecologically and structurally dominant features of the Chesapeake Bay prior to European colonization. Four centuries of harvest pressure, habitat degradation, and, more recently, disease activity have affected...

Evaluating recruitment contribution of a selectively bred aquaculture line of the oyster, Crassostrea virginica used in restoration efforts.(Abstract)
December 1, 2008... ABSTRACT Severe over-fishing, habitat degradation, and recent disease impacts have devastated the eastern oyster (Crassostrea virginica) fishery in the Chesapeake Bay. Several restoration efforts are in progress, including the unconventional...

Preliminary studies on cryopreservation of Sydney rock oyster (Saccostrea glomerata) larvae.(Abstract)
December 1, 2008... ABSTRACT In this study several parameters critical to the success of cryopreserving Sydney rock oyster (Saccostrea glomerata) larvae were investigated. They were: (1) cryoprotectants (10% dimethyl sulfoxide and 10% propylene glycol), (2)...

Gonadal development and histochemistry of the tropical oyster, Crassostrea corteziensis (Hertlein, 1951) during an annual reproductive cycle.(Abstract)
December 1, 2008... ABSTRACT We describe the quantitative and qualitative histology and histochemistry for a tropical oyster, C. corteziensis sampled in a coastal lagoon in Northwest, Mexico. Males were larger than immature oysters, with females presenting...

A leucine aminopeptidase gene of the Pacific oyster Crassostrea gigas exhibits an unusually high level of sequence variation, predicted to affect structure, and hence activity, of the enzyme.(Abstract)
December 1, 2008... ABSTRACT Leucine aminopeptidase (LAP) belongs to a family of ubiquitous peptidases, with roles in growth and development, stress responses and adaptation to changing environmental conditions. The LAP gene was sequenced from a commercially...

Discrimination of nine Crassostrea oyster species based upon restriction fragment-length polymorphism analysis of nuclear and mitochondrial DNA markers.(Abstract)
December 1, 2008... ABSTRACT A molecular genetic identification key for nine species of Crassostrea oysters was developed based on restriction fragment-length polymorphism (RFLP) analyses of nuclear and mitochondrial DNA markers. Seven of nine species were...

Restoration of oyster reefs along a bio-physical gradient in Mobile Bay, Alabama.(Abstract)
December 1, 2008... ABSTRACT Oyster reefs support a valuable commercial fishery based on the extraction of oysters from the biogenic reef matrix they form. This fact, combined with recent recognition of the many ecological services oyster reefs provide to...

Biological aspects of the lagoon cockle, Cerastoderma glaucum (Poiret 1879), in a coastal lagoon in Keramoti, Greece in the northeastern Mediterranean.(Abstract)
December 1, 2008... ABSTRACT Growth of the lagoon cockle, Cerastoderma glaucum Poiret, was determined from samples collected seasonally from Keramoti lagoon in Greece in the northeastern Mediterranean. The three-dimensional almost "spherical" shell shape does not...

The feasibility of bomb radiocarbon analysis to support an age-at-length relationship for red abalone, Haliotis rufescens Swainson in northern California.(Abstract)
December 1, 2008... ABSTRACT Analysis of bomb generated radiocarbon ([sup.14]C) changes in a red abalone, Haliotis rufescens Swainson shell was used to evaluate age-at-length relationships derived from data from a previous multiyear, multisite tag-recapture study....

Marking the shell of the saucer scallop Amusium balloti for sea ranching using oxytetracycline, calcein and alizarin red S.(Abstract)
December 1, 2008... ABSTRACT Sea ranching of the saucer scallop Amusium balloti Bernardi, 1861 has recently been developed to compensate for the dramatic fluctuations in catch that naturally occur between seasons. Marking or tagging methodology is needed for this...

Long-term changes in intra- and inter-specific relationships in a community of scallops and sea stars under bottom scallop mariculture.(Abstract)
December 1, 2008... ABSTRACT Changes in a common benthic community of mobile Japanese scallops Patinopecten (=Mizuhopecten) yessoensis and predatory sea stars under introduction of mariculture were assessed by comparing the distribution and abundance of each...

Starvation-induced changes of hemocyte parameters in the Zhikong scallop Chlamys farreri.(Abstract)
December 1, 2008... ABSTRACT Substantial nutritional and energetic demands are associated with immune activation and the maintenance of an efficient immune system. One-year-old Chlamys farreri (Jones and Preston) scallops were maintained in lantern nets in...

Several cases of disseminated neoplasia in mussels Mytilus edulis (L.) in western Long Island Sound.(Abstract)
December 1, 2008... ABSTRACT Eight cases of disseminated neoplasia were found among 540 specimens of Mytilus edulis collected from an intertidal beach in Connecticut in western Long Island Sound. This was unusual, because disseminated neoplasia is very tare in M....

The seasonal movement and abundance of the starfish, Asterias rubens in relation to mussel farming practice: a case study from the Menai Strait, UK.(Abstract)(Case study)
December 1, 2008... ABSTRACT Mussel cultivation is the most valuable sector of the bivalve aquaculture industry in the United Kingdom, and the largest mussel fishery in Britain is located in the Menai Strait, North Wales. The common starfish, Asterias rubens is...

Bivalve assemblages on living coral species in the northern Red Sea, Egypt.(Abstract)
December 1, 2008... ABSTRACT Two stations northern Hurghada (Marine Biological Station and Ras El-Behar) were chosen during summer 2006 and winter 2007, to study and evaluate the compatibility of living bivalve assemblages on the living corals. Twenty- nine...

Contribution to understanding the population structure and maturation of Illex argentinus (Castellanos, 1960): the case of the inner-shelf spawning groups in San Matias Gulf (Patagonia, Argentina).(Abstract)
December 1, 2008... ABSTRACT Illex argentinus is known for spatiotemporally segregating into reproductive aggregations on the mid- continental shelf and slope off southern South America. In this study we found that the species also mates and spawns in San Matias...

Improving estimates of recruitment and catchability of jumbo squid Dosidicus gigas in the Gulf of California, Mexico.(Abstract)
December 1, 2008... ABSTRACT We analyzed the effect of outliers of the catch-per-unit effort on the catchability coefficient estimated by using a depletion model. When we used catch-per-unit effort in the Delury model, we observed a curve in the regression of...

Risk factors for the development of shell disease in impounded populations of the American lobster, Homarus americanus.(Abstract)
December 1, 2008... ABSTRACT A logistic regression model building approach was used to evaluate the association between the development of impoundment shell disease in an American lobster (Homarus americanus) storage facility, and prestorage physiological...

Juvenile white shrimp Litopenaeus setiferus predation on macrobenthic and zooplanktonic prey.(Abstract)
December 1, 2008... ABSTRACT An important part of quantifying predator-prey dynamics is to understand the contribution of various prey types to the predator diet. Although the role of juvenile penaeid shrimp as benthic predators is well established, recent...

Thermal effects on embryonic development and hatching for blue king crab Paralithodes platypus (Brandt, 1850) held in the laboratory, and a method for predicting dates of hatching.(Abstract)
December 1, 2008... ABSTRACT Climate change may affect crab populations via thermal effects on embryo development and hatching. To test this, we measured the duration of development and hatching for the embryos of 11 blue king crabs Paralithodes platypus held at...

Fishing time and trap ghost fishing for Cancer johngarthi along the Baja California peninsula's southwestern coast, Mexico.(Abstract)
December 1, 2008... ABSTRACT During trap-fishing investigations on the crab Cancer johngarthi along Baja California peninsula's southwestern coast, Baja California Sur, Mexico, conducted between 2002 and 2006, information was gathered to assess fishing efficiency...

Trap catch of green sea urchins Strongylocentrotus droebachiensis in kelp beds and barren grounds on the Norwegian coast.(Abstract)
December 1, 2008... ABSTRACT Field investigations were performed to find out if trap catch could be an alternative to diving to harvest green sea urchins (Strongylocentrotus droebachiensis). Laboratory experiments in y-maze tubes showed that starved sea urchins...

Coincidence in reproduction of the sea urchin Strongylocentrotus intermedius in Hirota Bay, on the Pacific Ocean off northern Honshu, and in the Sea of Japan off Hokkaido, Japan.(Abstract)
December 1, 2008... ABSTRACT Spawning season of Strongylocentrotus intermedius in Hokkaido is classified into the 3 types, Sea of Japan, Funka Bay, Sea of Okhotsk, and Pacific Ocean. To clarify the type in Pacific Ocean, northern Honshu, we calculated seasonal...

Growth and natural mortality rates of red sea urchin (Strongylocentrotus franciscanus) in British Columbia.(Abstract)
December 1, 2008... ABSTRACT Growth and natural mortality rates (M) of the red sea urchin (RSU), Strongylocentrotus franciscanus, were estimated based on tetracycline tagging studies and abundante surveys in Queen Charlotte Islands (QCI), Price Island (PI), Alert...

Rapid enzyme-linked immunosorbent assay for detection of the algal toxin domoic acid.(Abstract)
December 1, 2008... ABSTRACT Domoic acid (DA) is a potent toxin produced by bloom-forming phytoplankton in the genus Pseudo-nitzschia, which is responsible for causing amnesic shellfish poisoning (ASP) in humans. ASP symptoms include vomiting, diarrhea, and in...

A survey of the indigenous microbiota (bacteria) in three species of mussels from the Clinch and Holston Rivers, Virginia.(Abstract)
December 1, 2008... ABSTRACT Freshwater mussel conservation efforts by many federal and state agencies have increased in recent years. This has led to a greater number of stream surveys, in which mussel die-offs involving high numbers of dead and moribund animals...