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| Macia, A.. |
| A study to estimate the relative importance of mangrove primary carbon and nitrogen sources to five commercial penaeid shrimps species was done at Saco da Inhaca, a non-estuarine mangrove-fringed bay on Inhaca Island, southern Mozambique. Carbon and nitrogen stable isotope ratios were determined in a variety of primary producers (mangroves, epiphytes, phytoplankton and seagrasses), sediments and in five penaeid shrimp species (Penaeus (Fenneropenaeus) indicus, P. japonicus, P. semisulcatus, Metapenaeus monoceros and M. stebbingi), collected within the bay in different habitats and during two different periods. The penaeid shrimps showed 13C values ranging from â 13 to â 19 â °, (average of â 15.6 ± 0.4 â °, n=19) which is highly enriched compared to... |
| Tipo: Journal Contribution |
Palavras-chave: PENAEUS INDICUS; METAPENAEUS MONOCEROS; METAPENAEUS STEBBINGI; PENAEUS SEMISULCATUS; MARSUPENAEUS JAPONICUS; Shrimp culture; Nitrogen; Mangrove swamps; Carbon; Isotopes; Penaeid shrimp fisheries. |
| Ano: 2004 |
URL: http://hdl.handle.net/1834/1120 |
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| Paula, J.; Paula e Silva, R.; Hernroth, L.; Guissamulo, A.T.; Bandeira, S.O.; Gove, D.Z.; Macia, A.. |
| This synopsis describes the development of marine biological research, including fisheries, in Mozambique. With around 3000 km of coastline, the living resources of the sea playa major role in the Mozambican society, mainly as a source of protein and income for the population, and of foreign revenue through exports. In the first years, after independence, in 1975, research activities in marine sciences were limited and mainly concentrated to fisheries through cooperation with Norway and the Soviet Union. A new era for biology started in 1985 when the Faculty of Biology at Universidade Eduardo Mondlane was re-opened. A 5yr curriculum towards a licentiate degree was introduced with a strong marine profile. Since the 1990s, a very dynamic de-velopment in... |
| Tipo: Journal Contribution |
Palavras-chave: Marine biology; Fisheries. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/735 |
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| Macia, A.. |
| The effects of habitat characteristics (mangrove creek, sandflat, mudflat and seagrass meadow) water salinity, temperature, and depth on the density, spatial distribution and size distribution of juveniles of five commercially important penaied shrimp species (Metapenaus monoceros, M. stebbingi, Fenneropenaeus indicus, Penaeus japonicus and P. semisulcatus) were investigated during a high shrimp recruitment peak lasting from January to June 2002, in four contiguous habitats within a non-estuarine mangrove bay at Saco da Inhaca, Inhaca Island, Southern Mozambique. A total of 14,976 specimens representing the five species were collected by means of a 1m beam-trawl fitted with a 2 mm mesh net with a cod-end. Every two weeks corresponding with spring tides on... |
| Tipo: Journal Contribution |
Palavras-chave: METAPENAUS MONOCEROS; FENNEROPENAEUS INDICUS; METAPENAEUS STEBBINGI; PENAEUS SEMISULCATUS; MARSUPENAEUS JAPONICUS; Distribution; Habitat; Juveniles; Salinity; Shrimp culture; Penaeid shrimp fisheries; Mangrove swamps; Seagrass; Mud flats; Distribution; Juveniles; Salinity. |
| Ano: 2004 |
URL: http://hdl.handle.net/1834/1121 |
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