Relationship between water and otolith elemental concentrations in juvenile black bream Acanthopagrus butcheri
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منابع مشابه
Relationship between water and otolith elemental concentrations in juvenile black bream Acanthopagrus butcheri
Elements contained within calcified structures of fish, molluscs, bivalves and corals may provide a means to determine the characteristics of the environment occupied by an organism over time. In order to establish these characteristics it is first important to establish a link between one or more environmental variables and the concentration of elements within such a calcified structure. Black...
متن کاملFactors affecting mark quality of alizarin complexone-stained otoliths in juvenile black bream Acanthopagrus butcheri and a prescription for dosage.
The relationships between otolith score, a function of increasing stain visibility, and the ratio of alizarin complexone (mg) to fish biomass (g) for 0.1, 0.6 and 7 g black bream Acanthopagrus butcheri show that acceptable marks are produced in all size classes using a stain-to-biomass ratio of 3.3 mg g(-1) following an immersion period of 24 h.
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The topography of the neurons in the retinal ganglion cell layer of juvenile black bream Acanthopagrus butcheri changes during development. The region of high cell density the area centralis (AC), relocates from a temporal (central) to a dorsal (peripheral) position within the dorso-temporal retinal quadrant. To ascertain whether the differences in the position of the AC during development are ...
متن کاملDevelopmental changes in the cone visual pigments of black bream Acanthopagrus butcheri.
The spectral absorption characteristics of the visual pigments in the photoreceptors of the black bream Acanthopagrus butcheri Munro (Sparidae, Teleostei), were measured using microspectrophotometry. A single cohort of fish aged 5-172 days post-hatch (dph), aquarium-reared adults and wild-caught juveniles were investigated. During the larval stage and in juveniles younger than 100 dph, two clas...
متن کاملMassive mortalities of the black bream Acanthopagrus butcheri (Sparidae) in two normally-closed estuaries, following extreme increases in salinity
Salinities in some normally-closed estuaries in the central south coast of Western Australia are now frequently becoming highly elevated. This is due to: (1) high evaporation rates in water volumes that, by summer, are already low as a result of atypically dry winters; and (2) increased salt run-o¡ following vegetation clearing in the catchments. A few black bream (Acanthopagrus butcheri) died ...
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 2003
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps260263