NTDPI Tiger and Endeavour Prawn Closure Study, Western Gulf Of Carpentaria 1982-198
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Trawling of commercial prawn species was undertaken in the Western Gulf of Carpentaria, in the Groote Eylandt region. Areas subject to commercial fishing were targeted, with sampling being undertaken at approximately monthly intervals between October 1982 and March 1983. The sampling platform was the 15.8m prawn trawler F.V. "Paulwin", towing standard double-twin rig otter trawls. All prawns sampled were identified, sexed, and measured. The total weight for each species, by sex, was measured to ± 5g. Project objectives were: To determine the size composition of the principal tiger prawn species (Penaeus esculentus and Penaeus semisulcatus) and endeavour prawn species (Metapenaeus endeavouri and Metapenaeus ensis) on the commercial fishing grounds subject to seasonal closure in the western Gulf of Carpentaria; to undertake these determinations at monthly intervals between October 1982 and March 1983 inclusive, using a chartered prawn trawler; and to assess and report on the size composition of prawns on fishing grounds within or adjacent to the closed area with reference to the effectiveness of the closures in space and time. Refer to the listed report for further information.
Tropical Prawn Project Prawn Trawl Data c1975-1979 (Redfield Data)
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Prawn trawl data from Weipa, East and South East Gulf of Carpentaria in the late 1970s. The main objective was to ascertain the distribution and abundance of each of the main commercial and some non-commercial penaeid species. The main data collection was performed off the Judy B with cruises repeated every month for 13 months; some other vessels were involved at different times (Kalinda, Raptis Pearl, Sprightly). Trawling was conducted at night and consisting of 30 minute shots. All prawns were sorted by species (general codes used) and sex, but no weights were recorded. Catch rates were expressed as number of prawns caught per net per hour. There were more than four sampling plans.
Gulf of Carpentaria Prawn Data - MX (Maxim) Dataset 1983-1985
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This dataset is the result of a series of trawl surveys carried out aboard F.V. Maxim between August 1983 and March 1985 in the NW Gulf of Carpentaria, north of Groote Eylandt. The main reference is by Somers et al (1987) - see References link below. It details the gear, methods, study area, etc. The data collected included abundance and size composition of the commercial species of penaeids together with data on hydrology at the time of sampling, across 60 stations. Reproductive stage, moult stage, and parasites were also recorded. Cruises were carried out every four weeks centred around the new moon period.
Embley River Enclosure Data 1993-1994
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Juvenile tiger prawns were collected by beam trawl in the Embley River, Gulf of Carpentaria in October 1993, March 1994 and October/November 1994. The following parameters were measured: prawn numbers, carapace length, species, seagrass, biomass, salinity, temperature and depth. Field experiments were carried out using enclosure nets.