Journal of Shellfish Research articles from December 2004

Journal of Shellfish Research archives from December 2004

Population biology of the Pacific geoduck clam, Panopea abrupta, in experimental plots, southern British Columbia, Canada.
December 1, 2004... ABSTRACT Information was presented on the density, recruitment to harvestable size, and growth of the Pacific geoduck clam, P. abrupta, in 0.25 ha experimental plots with controlled fishing in two areas of southern British Columbia over a...

Natural mortality and recruitment rates of the Pacific geoduck clam (Panopea abrupta) in experimental plots.
December 1, 2004... ABSTRACT Experiments were conducted in Ritchie Bay on the west coast of Vancouver Island and Marina Island inside the Strait of Georgia, British Columbia, to examine the natural mortality (M) of geoduck, Panopea abrupta, and impact of...

Population abundance estimates of the New Zealand geoduck clam, Panopea zelandica, using North American methodology: is the technology transferable?
December 1, 2004... ABSTRACT This study investigates the applicability of methods used to describe patterns of distribution, and estimates of density and biomass of the Pacific geoduck clam, Panopea abrupta, from western North America for populations of the New...

Microsatellite and allozyme analyses reveal few genetic differences among spatially distinct aggregations of geoduck clams.(Panopea abrupta, Conrad 1849)
December 1, 2004... ABSTRACT The genetic population structure of geoduck clams (Panopea abrupta) in inland waters of Washington may affect fishery management and aquacultural practices involving this species. To investigate genetic differentiation in geoduck...

Seasonal shell growth and longevity in Donax variabilis from Northeastern Florida: evidence from oxygen isotopes.
December 1, 2004... ABSTRACT The variable coquina clam, Donax variabilis, is one of the most common inhabitants of exposed sandy beach intertidal and shallow subtidal zones in the southeastern United States. Its exceptional burrowing and migratory behaviors are...

The effect of temperature on clearance rate and oxygen consumption of scallops, Chlamys farreri.
December 1, 2004... ABSTRACT Rates of particle clearance and oxygen consumption were measured over full natural ranges of seawater temperature (1[degrees]C to 30[degrees]C) experienced by the scallop Chlamys farreri cultured in Shandong Province, People's Republic...

Reproduction of the lion's paw scallop Nodipecten subnodosus sowerby, 1835 (bivalvia: pectinidae) from Laguna Ojo de Liebre, B.C.S., Mexico.
December 1, 2004... ABSTRACT Knowledge of the reproductive cycle of marine invertebrates of economic importance is essential for management of natural stocks and to initiate aquaculture activities. The reproductive biology of Nodipecten subnodosus from Laguna Ojo...

Reproduction and pathology of blue mussels, Mytilus edulis (L.) in an experimental longline in Long Island Sound, Connecticut.
December 1, 2004... ABSTRACT An experimental longline was deployed in Long Island Sound, Connecticut to study the biologic feasibility of commercial culture of blue mussels, Mytilus edulis, in the area. Mussels were sampled monthly for 1 year starting 6 months...

First occurrence of the nonindigenous green mussel, Perna viridis (Linnaeus, 1758) in coastal Georgia, United States.
December 1, 2004... ABSTRACT Since being accidentally introduced into Tampa Bay in the Gulf of Mexico in 1999, the green mussel (Perna viriclis), a native to the Indo-Pacific region, has proliferated and dispersed southwards along peninsular Florida. During 2002...

Evaluation of the neutral red retention assay as a stress response indicator in cultivated mussels (Mytilus spp.) in relation to seasonal and environmental conditions.
December 1, 2004... The neutral red assay (NRA) was evaluated as an indicator of stress response in mussels that were held under various culture situations. The NRA measures retention time of neutral red dye in the hemocyte organelle, the lysosome, which can be...

Selection response for growth rate (shell height and live weight) in the Chilean blue mussel (Mytilus chilensis Hupe 1854).
December 1, 2004... ABSTRACT The parental stock was taken from the 1999 natural spatfall of Mytilus chilensis collected in the Yaldad Bay of southern Chile. From the 22-mo-old cohort 5,688 mussels were monitored for live weight and shell length. Selection was...

Evidence for the presence of the Portuguese oyster, Crassostrea angulata, in northern China.
December 1, 2004... ABSTRACT The Pacific oyster, Crassostrea gigas (Thunberg), and the Portuguese oyster, C. angulata (Lamarck), are two closely related taxa. Although these two taxa were both introduced from Asia into Europe, one (C. gigas) was voluntarily...

The distribution and ecological effects of the introduced Pacific oyster Crassostrea gigas (Thunberg, 1793) in Northern Patagonia.
December 1, 2004... ABSTRACT In this work we studied the actual coverage, distribution patterns and ecologic effects of the introduced oyster Crassostrea gigas 20 y after their introduction to the Northern Argentinean Patagonia (Bahia Anegada; 39[degrees]50'S to...

The potential of aerial photography for estimating surface areas of intertidal Pacific oyster beds (Crassostrea gigas).
December 1, 2004... ABSTRACT Pacific oysters were introduced into the Eastern Scheldt in 1964 for breeding purposes. The first spatfall of wild Pacific oysters was recorded in 1976, and a second larval outburst in 1982 definitely settled wild Pacific oysters in...

Growth and survivorship of non-native (Crassostrea gigas and Crassostrea ariakensis) versus native eastern oysters (Crassostrea virginica).
December 1, 2004... ABSTRACT The decline of wild populations of the eastern oyster Crassostrea virginica from fishing impacts and disease combined with limited success in its culture has stimulated discussion among coastal managers about the risks and benefits of...

Reproductive cycle and mortality of the Japanese oyster Crassostrea gigas cultured in Bahia Falsa, Baja California, Mexico.
December 1, 2004... ABSTRACT The gonadal development by estimating the percentage of cell components of the mantle (MC) of cultured oysters (Crassostrea gigas) and mortality were studied in the Bahia Falsa, B. C. Mexico from May 1996 to April 1997. Two localities,...

A comparison between a suction dredge and a traditional oyster dredge in the transplantation of oysters in Delaware Bay.
December 1, 2004... ABSTRACT One mechanism to enhance oyster production is the timely transplant of oysters from nursery beds to beds used for commercial harvesting. Transplanting in Delaware Bay is normally done with a traditional oyster dredge. Such dredges can...

Organisms associated with oysters cultured in floating systems in Virginia, USA.
December 1, 2004... ABSTRACT The number and abundance of macro-faunal taxa was estimated from six floating structures (floats) used to culture the Eastern oyster (Crassostrea virginica) near Chincoteague Island, Virginia, USA. After a 10-too grow-out period, all...

Parasitic and symbiotic fauna in oysters (Crassostrea virginica) collected from the Caloosahatchee River and Estuary in Florida.
December 1, 2004... ABSTRACT Studies of oysters, Crassostrea virginica, collected from 10 sites in the Caloosahatchee River and Estuary, Florida, revealed a varied parasite and symbiotic faunae that have never been reported in this area. Organisms observed...

A review of the market structure of the Louisiana oyster industry: a microcosm of the United States oyster industry.
December 1, 2004... ABSTRACT Louisiana enjoys the highest annual oyster production among all states, contributing over thirty percent of the total domestic supply of the eastern oyster, Crassostrea virginica. Over the last 2 decades, changes in oyster habitat,...

Reproductive biology of the "Copey" snail Melongena melongena (Linnaeus, 1758) in Cispata Bay on the Caribbean coast of Colombia.
December 1, 2004... ABSTRACT The reproductive cycle of the "Copey" snail Melongena melongena at Cispata Bay was examined from October 1998 to September 1999. Gonad maturation was studied through macroscopic and microscopic observations on the gonads of females >70...

Transplanting of wild and cultivated juveniles of green abalone (Haliotis fulgens Philippi 1845): growth and survival.
December 1, 2004... ABSTRACT The growth and survival rate of wild and cultivated abalone juveniles (Haliotis fulgens) transplanted into the sea was measured from January 2000 to January 2003 in Bahia Tortugas, Baja California. A total of 306 wild individuals...

Comparative karyotypes of two northeastern Pacific abalone species (Haliotis fulgens Philippi and Haliotis rufescens Swainson).
December 1, 2004... ABSTRACT The karyotypes of 2 northeastern Pacific abalone species, Haliotis fulgens and H. rufescens, were evaluated from trochophore larvae cells, finding that for both species the diploid number is 36. There were differences between the two...

A comparative evaluation of the habitat value of shellfish aquaculture gear, submerged aquatic vegetation and a non-vegetated seabed.
December 1, 2004... ABSTRACT The habitat value of modified rack and bag, shellfish aquaculture gear (SAG) used for the grow-out phase of the American oyster, Crassostrea virginica, submerged aquatic vegetation (SAV), Zostera marina, and a shallow nonvegetated...

Molluscan communities of the rocky intertidal zone at two sites with different wave action on Isla La Roqueta, Acapulco, Guerrero, Mexico.
December 1, 2004... ABSTRACT Molluscan communities were studied on two shores, one exposed and the other sheltered from wave action by determining the diversity, richness, density, dominance, and similarity of the groups of species found in the upper part of...

Phylogenetic relationships among the Decabrachia cephalopods inferred from mitochondrial DNA sequences.
December 1, 2004... ABSTRACT To clarify phylogenetic relationships among the decabrachia cephalopods, especially the family Sepiidae and Sepiolidae, mitochondrial cytochrome c oxidase subunit I (COI) gene and partial 16S rRNA gene were sequenced for 13 species....

Comparisons between the reproductive biology of females of two species of deep sea crabs that live in different water depths.
December 1, 2004... ABSTRACT The reproductive biology of females of Hypothalassia acerba and Chaceon bicolor off the lower west coast of Australia, and of the former species off the southern coast of Western Australia, are compared. The trends exhibited throughout...

A survey of genetic changes and search for sex-specific markers by AFLP and SAMPL in a breeding program of Chinese shrimp (Penaeus chinensis).
December 1, 2004... ABSTRACT Amplified fragment length polymorphism (AFLP) and selective amplified microsatellite polymorphic loci (SAMPL) were used for a survey of genetic changes over three generations and search for sex-specific markers in a breeding program of...

Effects of temperature and salinity fluctuation on the oxygen consumption, ammonium excretion and osmoregulation of the blue shrimp Litopenaeus stylirostris (stimpson).
December 1, 2004... ABSTRACT This study presents data on the effect of temperature and fluctuations in salinity on the oxygen consumption, nitrogen excretion, and osmoregulation of Litopenaeus stylirostris juveniles to determine the combinations, so these can be...

Molecular phylogeny of Superfamily Penaeoidea Rafinesque-Schmaltz, 1815, based on mitochondrial 16S partial sequence analysis.
December 1, 2004... ABSTRACT Partial mitochondrial DNA sequences were analyzed to reconstruct the phylogeny of Superfamily Penaeoidea. In addition to 11 new 16S rRNA sequences generated for this study, 18 previously reported sequences (including 3 outgroups) were...

Effects of feeding level on the growth, energy budget and body biochemical composition of Chinese shrimp Fenneropenaeus chinesis.
December 1, 2004... ABSTRACT Chinese shrimp Fenneropenaeus chinensis with wet weight of 3.0 g, 8.0 g, 14.2 g, and 19.0 g were fed at 5 feeding levels of 0, 0.5%, 1.0%, and 1.5% of the body weight, and ad libitum to investigate the growth and food conversion...

The origin of the regulatory limits for PSP and ASP toxins in shellfish.
December 1, 2004... ABSTRACT Understandably, commercial and recreational seafood harvesters are interested in how regulatory limits are set for various toxins in seafood. Here we summarize the origins of the safety levels for paralytic shellfish poisoning (PSP)...

World abalone fisheries and aquaculture update: supply and market dynamics.
December 15, 2004... ABSTRACT Culminating in the year 2002, a global shift in both abalone availability and distribution occurred. Country by country abalone reporting by FAO for both wild caught and cultured abalone changes significantly when further dissected and...

The status of abalone culture in China.
December 15, 2004... ABSTRACT Since 1990 abalone culture has spread widely from north to south on China's coast. Estimated total yield for the year 2001 was around 4,500 tonnes (excluding Taiwan). There are several hundreds of abalone farms along the coast. Some of...

Abalone mariculture in China.
December 15, 2004... ABSTRACT Remarkable progress has been made in recent years in abalone cultivation in China. Beginning in the early 1980s, commercial scale mariculture of abalone has involved 2 species: Pacific abalone, Haliotis discus hannai Ino and the small...

Status of the ormer (Haliotis tuberculata L.) industry in Europe.
December 15, 2004... ABSTRACT The ormer (Haliotis tuberculata) occurs from the Senegal coast in the south to the Cotentin peninsula of France in the north. Commercial fisheries currently operate in France and Spain. The French abalone fishery was opened in 1994....

Growth and survival of post-larval abalone Haliotis diversicolor supertexta (lischke) using an alternative culture method in the light and dark.
December 15, 2004... ABSTRACT Stott's Abalone Postlarvae Production System (SAPPS) was developed as an alternative method for settling larvae and raising postlarval abalone. It allows continuous hatchery production of abalone without using live food. The new system...

Effect of temperature on the early development of Haliotis diversicolor Reeve.
December 15, 2004... ABSTRACT The effect of temperature on the early development of Haliotis diversicolor Reeve was studied as a strategy to define the optimum temperature range for experiments on early developmental conditions of this species. The survival rate of...

Fatty acid composition of eggs derived from conditioned and wild caught greenlip abalone broodstock (Haliotis laevigata).
December 15, 2004... ABSTRACT In the present study, the fatty acid profiles of eggs spawned from conditioned and wild caught greenlip abalone broodstock (Haliotis laevigata) were compared. Lower proportions of polyunsaturated fatty acids (12% and 9%) compared with...

Settlement of abalone (Haliotis iris) larvae in response to five species of coralline algae.
December 15, 2004... ABSTRACT Abalone recruits are found predominantly on crustose coralline algae (CCA) and recruitment seems to vary among coralline species or growth-forms. Spatial patterns in the recruitment of marine invertebrates can be formed by processes...

Effect of grazing by a herbivorous gastropod Homalopoma amussitatum, a competitor for food with post-larval abalone, on a community of benthic diatoms.
December 15, 2004... ABSTRACT The effect of grazing by a small herbivorous gastropod Homalopoma amussitatum on the density and species composition of benthic diatoms was examined in the laboratory. H. amussitatum is a dominant species on exposed crustose coralline...

Growth and survival of juvenile red abalone (Haliotis rufescens) fed with macroalgae enriched with a benthic diatom film.
December 15, 2004... ABSTRACT The objective of this work was to evaluate the growth rate of 150-day-old juvenile abalone Haliotis rufescens fed with blades of the seaweed Macrocystis pyrifera epiphyted with a film of the benthic diatom Navicula incerta. Five...

Combined effects of light condition (constant illumination or darkness) and diatom density on postlarval survival and growth of the abalone Haliotis rufescens.
December 15, 2004... ABSTRACT Abalone (Haliotis spp.) postlarvae are cultured in systems that provide natural or artificial light to promote the growth of benthic diatoms that are grazed by postlarvae. Larger abalones (>2 cm) grow better in dark conditions and the...

Effects of density and food supply on postlarval abalone: behaviour, growth and mortality.
December 15, 2004... ABSTRACT Understanding density dependent processes in abalone is important for sustainable management of fisheries, and optimum aquaculture production. Density and food were manipulated to test their interacting effects on the growth and...

Nursery culture of the abalone Haliotis laevigata: larval settlement and juvenile production using cultured algae or formulated feed.
December 15, 2004... ABSTRACT This study was conducted to investigate the settlement, growth, survival, and size variability of the abalone Haliotis laevigata on commercial scale. At settlement, two plate conditioning times for the green alga Ulvella lens...

Utilization of dietary protein, lipid, and carbohydrate by abalone Haliotis discus hannai: a review.
December 15, 2004... ABSTRACT Feeding Haliotis discus hannai depends mainly on the use of macroalgae such as Undaria sp. or Laminaria sp., although the species is an important mariculture shellfish in Korea. Research on the utilization of protein, lipid, and...

Aminopeptidase reactivity in the digestive tract of adult abalone Haliotis asinina linnaeus.
December 15, 2004... ABSTRACT Histologically, the epithelium of the digestive tract is pseudostratified columnar type, which is composed of 3 kinds of cells (i.e., granulated cells, nongranulated cells, and mucus cells). The subsets of these three types of cells...

Effects of starvation on energy reserves in young juveniles of abalone Haliotis discus hannai Ino.
December 15, 2004... ABSTRACT Effects of various degrees of starvation (0-, 5-, 10-, 15-, 20- and 25-day fasted) on tissue protein, lipid, total carbohydrate, glycogen and ash contents, as well as the ratio of soft-tissue to shell weight, were investigated in young...

Influence of dietary lipid sources on growth and fatty acid composition of juvenile abalone, Haliotis discus hannai Ino.
December 15, 2004... A study was conducted to evaluate the effects of dietary lipid sources on the growth and fatty acid composition of juvenile abalone Haliotis discus hannai Ino. Four triplicate groups of juvenile abalone (initial weight: 0.13 [+ or -] 0.04 g;...

Dietary pantothenic acid requirement of juvenile abalone, Haliotis discus hannai Ino.
December 15, 2004... ABSTRACT Juvenile abalone, Haliotis discus hannai Ino, of 0.55 [+ or -] 0.02 g in body weight, and 15.48 [+ or -] 0.31 mm in shell length, were fed with six purified diets containing 0, 9.8, 19.8, 39.7, 79.4, 158.5 mg Ca-pantothenic acid/kg...

Growth and tissue biochemical composition of Haliotis fulgens at elevated temperatures in Baja California under two dried brown algal diets.
December 15, 2004... ABSTRACT Growth, survival, and tissue biochemical composition of juvenile green abalone Haliotis fulgens were recorded for two temperature regimes simulating the contrasting marine conditions, one as a normal year and the other as an El Nino...

Utilization of fermented skipjack tuna viscera as a dietary protein source replacing fish meal or soybean meal for juvenile abalone Haliotis discus hannai.
December 15, 2004... ABSTRACT This study was carried out to evaluate the usefulness of fermented skipjack tuna viscera (FSTV) in the diet for juvenile abalone Haliotis discus hannai. Lactobacillus bulgaricus was used for fermentation of skipjack tuna viscera. Eight...

Effects of vitamins A and D on shell biomineralization of abalone Haliotis discus hannai, Ino.
December 15, 2004... ABSTRACT A 152-day feeding trial was conducted in a recirculating water system to investigate the effects of vitamins A (retinol) and D (cholecalciferol) on shell biomineralization of the abalone Haliotis discus hannai Ino. Triplicate groups of...

Shell microstructure, mineralogy and in vitro crystallization studies on the shell soluble matrix of abalone, Haliotis discus hannai Ino.
December 15, 2004... ABSTRACT The shell microstructure of the abalone, Haliotis discus hannai Ino, was studied using scanning electron microscopy. The shell consists of the periostracum, prismatic, and nacreous layers with calcite in the outer prismatic layer and...

Morphological changes in the radula of abalone Haliotis diversicolor aquatilis from post-larva to adult.
December 15, 2004... ABSTRACT The radula morphology of Haliotis diversicolor aquatilis was examined by SEM from postlarval to adult stages. In postlarvae of -0.5 mm SL, a rachidian tooth (R), 2 pairs of lateral teeth (L1, L2), and 2-3 pairs of marginal teeth (M)...

Serotonergic and FMRF-amidergic neurons in the nerve ganglia of Haliotis asinina Linnaeus.
December 15, 2004... ABSTRACT The neurons containing serotonin and FMRF-amide were immunohistochemically localized in the cerebral, pleuropedal and visceral ganglia of Haliotis asinina. The large (~10 x 20 [micro]m in diameter) and medium size (~7 x 10 [micro]m in...

Sensory receptors on cephalic and epipodial tentacles of Haliotis asinina Linnaeus.
December 15, 2004... ABSTRACT Haliotis asinina, a tropical abalone, has a pair each of cephalic, optic, appendage tentacles at the anterior end of the head, and numerous epipodial tentacles distributed on the periphery of its body. The cephalic and epipodial...

Histology of hypobranchial gland and gill of Haliotis asinina Linnaeus.
December 15, 2004... ABSTRACT The hypobranchial gland of Haliotis asinina exhibits major and minor folds that are called leaves and leaflets. When viewed by scanning electron microscope, numerous tufts of rod-shaped cilia, paddle-like cilia, and clusters of...

Biological zero point in hybrid Pacific abalone.
December 15, 2004... The biologic zero point (BZP) of hybrid Pacific abalone Haliotis discus hannai (China) and Haliotis discus discus (Japan) at temperatures of 16[degrees]C, 20[degrees]C, and 22[degrees]C was calculated from the developmental hatching rate,...

Induction of gynogenetic diploids in the small abalone, Haliotis diversicolor supertexta.
December 15, 2004... ABSTRACT The conditions for induction of gynogentic haploids and restoration of gynogenetic diploids, were studied in the small abalone, Haliotis diversicolor supertexta. Gynogentic diploids were produced by first using chromosome inactivated...

Polyethylenimine promotes sperm-mediated transgene and oligonucleotide delivery in abalone Haliotis discus hannai.
December 15, 2004... ABSTRACT In this study, a pCMV2-EGFP plasmid (Invitrogene), in which the enhanced green fluorescent protein gene under the control of the CMV2 promoter, was used as a reporter gene to evaluate the efficiency of the gene transferring techniques...

Identification of an [alpha]-peptide in Haliotis Rubra with homology to the Lymnaea [alpha]-CDCP spawning peptide.
December 15, 2004... ABSTRACT It is now understood that a combination of molluscan reproductive peptides are commonly cleaved from a large preprohormone and influence different aspects of spawning behavior. One type of reproductive peptide, known in Lymnaea...

Genetic structure of cultured Haliotis diversicolor supertexta (reeve) populations.
December 15, 2004... ABSTRACT Genetic structure of four cultured Haliotis diversicolor supertexta populations were investigated using the assay of vertical slab polyacrylamide gel electrophoresis. Low levels of genetic diversity of populations was found: mean...

RAPD analysis of genetic diversities of three species of abalone.(random amplified polymorphic DNA)
December 15, 2004... RAPD (random amplified polymorphic DNA) technique was applied to detect the genetic diversity in 3 species of abalone (Haliotis discus hannai Ino, Haliotis discus discus Reeve and Haliotis diverscolar Reeve). Twenty random primers, screened out...

Lack of genetic divergence in nuclear and mitochondrial DNA between subspecies of two Haliotis species.
December 15, 2004... ABSTRACT Haliotis discus and Haliotis diversicolor are economically important abalone species in northern and southern China, respectively. Two subspecies have been recognized for each species, namely, H. discus discus and H. discus hannai, and...

Genetic variations and divergence of two Haliotis species as revealed by AFLP analysis.
December 15, 2004... ABSTRACT Amplified fragment length polymorphism (AFLP) technology was used to reveal genetic variations and divergence of Haliotis discus and H. diversicolor, the two economically important abalone species in China. Three sets of selective...

Genetic control of bluish shell color variation in the Pacific abalone, Haliotis discus hannai.
December 15, 2004... ABSTRACT Shell color variation is one of the more interesting phenomena in abalone breeding. Especially, the identification of inheritable shell color will be a useful visual genetic marker. Bluish shell colored individuals were discovered in...

The identification of genetic resistance to amyotrophia in Japanese abalone, Haliotis discus discus.
December 15, 2004... ABSTRACT This experiment was designed to evaluate the genetic resistance to amyotrophia of Japanese abalone (Haliotis discus discus) under a mixed rearing environment. Two selected families that had previously shown resistance to abalone...

Virus infection in cultured abalone, Haliotis diversicolor reeve in Guangdong Province, China.
December 15, 2004... ABSTRACT A serious disease occurred in many Holiotis diversicolor Reeve farms during 1999 and 2002. The symptoms of the infected abalone were as follows: the pleopod became stiff, its surface became black, and the mantle shrank. Ali sizes of...

A new species of Cryptobia sp. n. (kineloplastida, bodinina, bodonidae) found in the blood of the farmed abalone, Haliotis diversicolor Reeve.
December 15, 2004... ABSTRACT A new species of Cryptobia, was found in the blood of diversicolor abalone, Haliotis diversicolor Reeve, derived from farming ponds, on the coast of the south China sea in December 2000. Stained with Giemsa smear, most organisms are...

Response of innate immune factors in abalone Haliotis diversicolor supertexta to pathogenic or nonpathogenic infection.
December 15, 2004... ABSTRACT Cell free hemolymph from Haliotis diversicolor supertexta was prepared from fluid collected at 1, 4, 8, 12, 24, 48, 96 h after injection with either Escherichia coli, Vibrio parahaemolyticus or 0.9 NaCl solution (control group). The...

The ecology of polychaetes that infest abalone shells in Victoria, Australia.
December 15, 2004... ABSTRACT Very little is understood regarding polychaete borers and the effect they have on their hosts. In Victoria and elsewhere in Australia many stunted populations of Haliotis rubra have extensively bored shells. This study investigated the...

Data on pink abalone, Haliotis corrugata (Gray 1828) with infested shells from the San Benito archipelago, Baja California, Mexico.
December 15, 2004... ABSTRACT This work presents abundance estimations of pink abalone (Haliotis corrugata, Gray 1828) with shells infested by epibionts from the San Benito archipelago (Baja California, Mexico). The first quantifications, undertaken at the end of...

Microsatellite DNA analysis of southeast Australian Haliotis laevigata (donovan) populations--implications for ranching in Port Phillip Bay.
December 15, 2004... ABSTRACT The genetic composition of greenlip abalone (Haliotis laevigata) from Point Cook in Port Phillip Bay was examined prior to the aggregation of individuals from this site for ranching. The very thinly distributed natural population at...

Measuring abalone (Haliotis spp.) recruitment in California to examine recruitment overfishing and recovery criteria.
December 15, 2004... ABSTRACT Abalone populations in southern California have declined dramatically since the 1950s when they supported a multispecies, commercial, and recreational fishery producing more than 3,000 t per year. Today the commercial fishery is closed...

Effects of extensive seeding on abalone, Haliotis discus discus, abundance on the Pacific coast of Boso Peninsula, Japan.
December 15, 2004... ABSTRACT Abalone resources in Chiba Prefecture, the Pacific coast of central Japan, have been severely reduced in recent years. Our investigations have revealed that the density of the mature abalone in this area is 0.019 ind./[m.sup.2], which...

Gonad development in seeded Haliotis laevigata: growth environment determines initial reproductive investment.
December 15, 2004... ABSTRACT Cultured Haliotis laevigata (Donovan), 18 mo old, were tagged and seeded at either high or low densities on boulder reefs (4-6 m depth) at Cape Jervis, South Australia in September 2001. Surveys every 3 mo quantified growth history and...

Abalone resource decline and a recovery attempt in Chiba Prefecture, Japan.
December 15, 2004... ABSTRACT Landings of abalone (H. discus, H. gigantea, and H. madaka) in Chiba Prefecture, Japan exceeded 700 t in 1966 and fluctuated between 600-800 t until 1978. The landings started to decline in 1979 and reduced to less than 100 t in 1997....

Growth responses in emergent greenlip abalone to density reductions and translocations.
December 15, 2004... ABSTRACT Growth of "stunted" greenlip abalone in areas with low maximum sizes was enhanced over 6 mo by reducing their natural density and by translocation to habitats supporting faster growing abalone. Density reductions significantly...