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Your search keyword '"Giant kingfish"' showing total 3 results
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3 results on '"Giant kingfish"'

1. Movement patterns of the iconic giant trevally Caranx ignobilis from southern Africa, determined using tag-recapture data.

Author

Dixon, R.B., Murray, T.S., Mann, B.Q., Cowley, P.D., and Jordaan, G.L.

Subjects
*TOP predators, *RETURN migration, *CITIZEN science, *LABOR mobility
Abstract

Giant trevally Caranx ignobilis , the largest species in the genus Caranx , are global icons as apex marine predators and contribute substantially to global fisheries. Understanding their movement patterns is critical for effective management, especially in the case of transboundary stocks. In southern Africa, there is limited published movement data for the species, apart from studies at the world's largest recorded aggregation of C. ignobilis globally, in southern Mozambique. Therefore, the broad aim of this study was to describe the coastal movements of C. ignobilis from southern Africa using data from South Africa's longest-running citizen science tag-recapture project. A total of 3 729 fish were dart tagged between 1984 and 2020, producing 144 recaptures. While 74% of recaptures were recorded < 1 km from the tagging location, long-distance movements of up to 419 km were also recorded (mean = 15 km). Although adults moved significantly (p < 0.01) greater distances than juveniles, they also displayed high levels of site fidelity. Seasonal trends included evidence of a summer migration from South Africa to southern Mozambique; but surprisingly, no transboundary movements were recorded. The data suggest long-term site fidelity with interspersed return migrations, likely for spawning. However, for the purposes of management, further research would be required to determine the proportion of the population that undertakes transboundary migration, rendering them potentially vulnerable to overfishing in foreign waters. [Display omitted] • High proportions of restricted movement behaviour and few long-distance movements. • Adults moved significantly greater distances than juveniles. • Evidence of a summer migration from South Africa to southern Mozambique. • Results warrant further investigation using acoustic telemetry. [ABSTRACT FROM AUTHOR]

Published
2023
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2. Evaluation of antioxidant activity of muscle and skin protein hydrolysates from giant kingfish, Caranx ignobilis (Forsskål, 1775)

Author

K. Anila Kulandai and R. A. Nazeer

Subjects
chemistry.chemical_classification, Metal chelating activity, Antioxidant, biology, medicine.medical_treatment, Linoleic acid, biology.organism_classification, Trypsin, Industrial and Manufacturing Engineering, Hydrolysate, Amino acid, Lipid peroxidation, chemistry.chemical_compound, chemistry, Biochemistry, medicine, Food Science, Giant kingfish, medicine.drug
Abstract

Summary To assess the antioxidant properties of fish protein hydrolysate from giant kingfish Caranx ignobilis (Forsskal, 1775), muscle and skin were obtained using various proteases (papain, pepsin, trypsin and α-chymotrypsin), respectively. Antioxidant activities of the resulting hydrolysates were evaluated using 2, 2-diphenyl-1-picrylhydrazyl radical scavenging activity, reducing power and metal chelating activity. Among the hydrolysates, peptic of muscle (37 ± 1.0; 0.290 ± 0.012; 63.30 ± 0.57) and tryptic of skin (36.2 ± 1.0; 0.190 ± 0.110; 63 ± 0.57) hydrolysates, which had the highest free radical scavenging activity, was subjected to purification using Sephadex G-25. The fractionated hydrolysates were superior to the original hydrolysates in the antioxidative activity tested. The active fractions (MF2 and SF2) effectively inhibited lipid peroxidation in linoleic acid emulsion system, and the activity was compared with α-tocopherol. The amino acid profile of MF2 and SF2 showed a high level of essential amino acids, and the most abundant amino acids were in the order His (12.01% and 7.08%), Phe (7.05% and 6.18%) and Lys (6.76% and 4.74%). Conclusively, C. ignobilis muscle and skin hydrolysates could be a promising rich source of natural antioxidants.

Published
2011
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3. Petroleum Developments in Australia and Oceania in 1971

Author

Edward F. Durkee

Subjects
biology, Energy Engineering and Power Technology, Geology, Structural basin, biology.organism_classification, Well drilling, Natural gas field, chemistry.chemical_compound, Paleontology, Fuel Technology, Oceanography, chemistry, Geochemistry and Petrology, Earth and Planetary Sciences (miscellaneous), Petroleum, Submarine pipeline, Energy source, Offshore drilling, Giant kingfish
Abstract

Exploration activity decreased overall in Australia during 1971 relative to 1970. Drilling was considerably reduced, there being 67 wildcats in 1971 versus 112 in 1970. However, significant exploration advances were made in the onshore Cooper basin in South Australia and in the offshore northwest shelf of Western Australia. Five new gas fields and 1 oil field were discovered in the Cooper basin. Preliminary data and several successful tests indicate gas and gas condensate reserves of possibly giant magnitude in the offshore Rankin area of Western Australia. Elsewhere in Australia, exploration activity was at a low ebb, including the prolific offshore part of the Gippsland basin in Victoria. In the Gippsland basin, however, very significant development activities occurred ith continued drilling of development wells on the giant Kingfish field. Gippsland basin offshore production was approaching 300,000 BOPD at the end of 1971. New exploration frontiers were opened in the Southwest Pacific (Oceania) area east of Australia with the drilling of 2 deep stratigraphic tests (Kumifonua 1 and 2) in the Tonga Islands.

Published
1972
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