Journal of Shellfish Research articles from September 2007

Journal of Shellfish Research archives from September 2007

Preface.(6th International Symposium on Abalone Biology, Fisheries and Culture)
September 1, 2007... The 6th International Symposium on Abalone Biology, Fisheries and Culture was held in Puerto Varas, Chile, from February 19-24, 2006. The symposium was organized under the auspices of the International Abalone Society and hosted by the...

Describing Northern Abalone, Haliotis kamtschatkana, habitat: focusing rebuilding efforts in British Columbia, Canada.(Report)
September 1, 2007... ABSTRACT The northern abalone is listed as threatened under the Canadian Species at Risk Act. Northern abalone occur in a wide range of habitats from fairly sheltered bays to exposed coastlines. However, not all habitats are likely to support...

Experimental abalone ranching on artificial reef in Port Phillip Bay, Victoria.
September 1, 2007... ABSTRACT Outplanting abalone seed on artificial reef can potentially achieve the dual aim of stock enhancement and habitat improvement. This study examines the feasibility of ranching with hatchery-reared juvenile Haliotis laevigata Donovan and...

Viability of abalone (Haliotis iris) stock enhancement by release of hatchery-reared seed in Marlborough, New Zealand.(Report)
September 1, 2007... ABSTRACT The total allowable commercial catch from New Zealand's Haliotis iris Gmelin 1791 fishery was reduced by 18% between 1999 and 2004. Quota holders have initiated research to assess the viability of stock enhancement by release of...

Development and current status of abalone aquaculture in Chile.(Report)
September 1, 2007... ABSTRACT Abalone aquaculture is rapidly developing in Chile although this mollusc does not occur naturally in this country. The red abalone Haliotis rufescens was introduced in 1977 and the ezo abalone Haliotis discus hannai in 1982. After...

Application of recent red abalone Haliotis rufescens surveys to management decisions outlined in the California abalone recovery and management plan.(Report)
September 1, 2007... ABSTRACT The management section of California's recently adopted Abalone Recovery and Management Plan (ARMP) uses results of fishery independent transect surveys at eight index sites to regulate total allowable catch (TAC) for the recreational...

Modeling growth and mortality of red abalone (Haliotis rufescens) in Northern California.(Report)
September 1, 2007... ABSTRACT We estimate annual growth and mortality of red abalone, Haliotis rufescens, in northern California using tag recapture data applied to multiple growth and mortality models. We investigate seven growth models of the form, [L.sub.t+1] =...

Comparisons of rearing systems based on algae or formulated feed for juvenile greenlip abalone (Haliotis laevigata).(Report)
September 1, 2007... ABSTRACT In most commercial abalone nurseries worldwide, algal biomass grown on vertical plates becomes inadequate once juvenile abalone reach about 5 mm in shell length. At that stage animals need to be moved into a different tank system and...

Three algal propagation methods assessed to create a rhodophyta diet for juvenile Greenlip Abalone (Haliotis laevigata) in the later nursery phase.(Report)
September 1, 2007... ABSTRACT A variety of red algal species have been identified as potential food sources for juvenile Greenlip Abalone, Haliotis laevigata (>5 mm shell length). To provide the red algal species in a diet suitable for juvenile abalone three...

Effect of water velocity and benthic diatom morphology on the water chemistry experienced by postlarval abalone.(Report)
September 1, 2007... ABSTRACT The water bathing postlarval abalone often lies within the diffusive boundary layer (DBL) so its chemistry is greatly influenced by the metabolism of the biofilm on which the abalone feed. This study used microelectrodes to investigate...

Investigation of optimal temperature and light conditions for three benthic diatoms and their suitability to commercial scale nursery culture of abalone (Haliotis laevigata).
September 1, 2007... ABSTRACT A series of trials was conducted to investigate the optimal temperature and light conditions for the culture of 3 benthic diatoms (Cocconeis sublittoralis, Achnanthes longipes and Navicula cf. jeffreyi), their biochemical composition...

Effect of three photoperiod regimes on the growth and mortality of the Japanese abalone Haliotis discus hannai Ino.(Report)
September 1, 2007... ABSTRACT Feeding activity of the Japanese abalone Haliotis discus hannai is clearly diurnal, with an increase in feeding between the onset of darkness and midnight. The feeding rate increases slowly in the afternoon, approaching sunset and...

Evaluation of growth and survival of juveniles of the Japanese abalone Haliotis discus hannai in two culture systems suspended in tanks.(Report)
September 1, 2007... ABSTRACT Growth and survival of the Japanese abalone Haliotis discus hannai were studied over a six-month period at the Center for Abalone Production, Universidad Catolica del Norte, Coquimbo, Chile. Cultures were carried out in lantern and...

Evaluation of three methods for transporting larvae of the red abalone Haliotis rufescens swainson for use in remote settlement.(Report)
September 1, 2007... ABSTRACT Three closed systems were evaluated for the transport of abalone larvae for use in remote settlement associated with mass culture activities. The first of these systems maintained the larvae in seawater, the second in seawater with...

Metamorphosis and postlarval growth of abalone Haliotis rufescens in a Mexican commercial hatchery.
September 1, 2007... ABSTRACT Metamorphosis induction and postlarval growth of the red abalone (Haliotis rufescens) were evaluated in a commercial farm of Baja California, Mexico. This hatchery settles larvae with gamma-aminobutyric acid (GABA, 1-[micro]M final...

Effect of darkness and water flow rate on survival, grazing and growth rates of abalone Haliotis rufescens postlarvae.(Report)
September 1, 2007... ABSTRACT The effect of two light conditions (light at 10-13-[micro]mol quanta/[m.sup.2]/s and darkness) in three water flow rates (0, 200, and 600 mL/min) on the survival, grazing, and growth rates of 6-day-old Haliotis rufescens postlarvae...

Effects of antibiotics on the concentration of bacteria in biofilms and on the growth of Haliotis rufescens postlarvae.
September 1, 2007... ABSTRACT The effects of chloramphenicol and streptomycin/penicillin on the concentration of heterotrophic bacteria in biofilms associated with abalone postlarval culture and on the growth and survival of Haliotis rufescens postlarvae (3-5 days...

Effect of two stocking densities on the growth and mortality of the pink abalone Haliotis corrugata in recirculating and flow-through systems.(Report)
September 1, 2007... ABSTRACT Traditional abalone culture is carried out in flow-through systems with water exchange rates between 200 and 2,400% of the total tank volume per day. These high volumes of water associated with abalone culture represents a constraint...

Effects of vitamin E on antioxidant enzyme activities and fatty acid compositions in juvenile abalone Haliotis discus hannai Ino.(Report)
September 1, 2007... ABSTRACT A 240-day feeding trial was conducted in a recirculated water system to investigate the effects of dietary vitamin E on the activities of antioxidant enzymes (catalase, CAT; superoxide dismutase, SOD; glutathione peroxidase, GPX) and...

Pyridoxine requirement of juvenile abalone, Haliotis discus hannai Ino.(Report)
September 1, 2007... ABSTRACT Juvenile abalone, Haliotis discus hannai Ino (initial mean body weight: 0.56 [+ or -] 0.01 g, shell length: 15.74 [+ or -] 0.13 mm) were fed six diets with graded levels of pyridoxine (PN) (0.40, 12.5, 22.7, 43.5, 87.8, and 172.2 mg/kg...

Selective breeding Greenlip abalone (Haliotis laevigata): preliminary results and issues.(Report)
September 1, 2007... ABSTRACT Greenlip abalone (Haliotis laevigata) (Donovan 1808) is a preferred aquaculture species in temperate Australia and selective breeding programs are being developed for this species. This study presents the results of a genetic parameter...

Karyotype composition in three California abalones and their relationship with genome size.(Report)
September 1, 2007... ABSTRACT The fundamental goal in cytogenetics is to analyze how the structure and behavior of chromosomes guarantee the conservation of the genetic information throughout the process of inheritance, and how the chromosomal variations could...

Molecular markers used to analyze species-specific status in abalones with ambiguous morphology.(Report)
September 1, 2007... ABSTRACT Pacific abalone (Haliotis discus hannai) and Californian red abalone (Haliotis rufescens) are easily distinguished by their shell and epipodial characteristics. A few individuals of H. rufescens were discovered to have epipodial...

Genetic structure of green abalone Haliotis fulgens population off Baja California, Mexico.
September 1, 2007... ABSTRACT The design of appropriate management plans of the green abalone Haliotis fulgens fishery needs a better understanding of the present status of the genetic diversity of the wild stock, as well as its genetic structure. Samples from nine...

Embryonic and larval development of haliotis tuberculata coccinea reeve: an indexed micro-photographic sequence.(Report)
September 1, 2007... ABSTRACT First description of the complete embryo and larval development of the Canarian abalone (Haliotis tuberculata coccinea Reeve.) was conducted along 39 stages from fertilization to the appearance of the third tubule on the cephalic...

First report of dodecaceria sp. (polychaeta: cirratulidae), in red abalone in Chile.
September 1, 2007... ABSTRACT This is the first time that the genus Dodecaceria is reported in shell galleries of the red abalone Haliotis rufescens. The worms measures up to 60-mm long with about 120 setigers and have a brown-greenish color. Previously Rozbaczylo...

The first report of phoronis sp. (Phoronida) in red abalone (Haliotis rufescens) in Chile.
September 1, 2007... ABSTRACT Various red abalone shells (Haliotis rufescens) taken from Chiloe X Region, Chile, were examined revealing an enormous amount of vermiform organisms identified as phoronides (Phylum Phoronida) belonging to the genus Phoronis. These...

First report of polychaetes from the genus Oriopsis (polychaeta: Sabellidae) associated with the Japanese abalone Haliotis discus hannai and other native molluscs in Chile.(Report)
September 1, 2007... ABSTRACT The external morphology of sabellids polychaetes gathered from green abalone (H. discus hannai) and 2 species of Chilean native gastropods (Fissurella sp. and Concholepas concholepas) was studied. According to the taxonomic keys of...

The introduced sabellid polychaete Terebrasabella heterouncinata in California: transmission, methods of control and survey for presence in native gastropod populations.(Report)
September 1, 2007... ABSTRACT The sabellid polychaete Terebrasabella heterouncinata (Fitzhugh & Rouse 1999) has a unique life history in which larvae settle on the edge of gastropod shells and rely on shell deposition to create a tube with an opening to the...

Oxytetracycline as a tool to manage and prevent losses of the endangered white abalone, Haliotis sorenseni, caused by withering syndrome.(Report)
September 1, 2007... ABSTRACT Research and captive rearing programs targeted to restore the endangered white abalone, Haliotis sorenseni, are being conducted in California and Washington state. Captive rearing, whereas successful, has demonstrated that this species...

CGRP regulates the activity of mantle cells and hemocytes in abalone primary cell cultures (Haliotis tuberculata).(calcetonin gene-related peptide)(Report)
September 1, 2007... ABSTRACT Mollusc shell formation requires calcium ([Ca.sup.++]) and bicarbonate (C[O.sub.3]) ions, transported through the mantle via the hemolymph, and the secretion of an organic matrix that interacts with the mineral ions to form either the...