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| Muths, Delphine; Tessier, Emmanuel; Gouws, G.; Craig, M.; Mwale, M.; Mwaluma, J.; Mwandya, A.; Bourjea, Jerome. |
| The reef fish Myripristis berndti (Jordan & Everman 1903) is a pantropical species. A genetic analysis was conducted on 353 individuals from 10 localities distributed across the SW Indian Ocean (SWIO) in order to determine patterns of connectivity in the SWIO. Both the mtDNA sequences (711-bp cytochrome b sequences) and the microsatellites (8 newly developed loci) reveal spatial patterns of differentiation within the SWIO. There is, however, a discrepancy between the structure observed with each kind of marker. MtDNA revealed that 3 peripheral populations (NW Kenya, SE Reunion, and SW Europa) were isolated from the 7 more central populations, which form a more densely connected population network, while microsatellite data indicated a more restricted... |
| Tipo: Text |
Palavras-chave: MtDNA; Microsatellite; Marine fish; SW Indian Ocean; Connectivity. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00073/18444/15974.pdf |
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| Mwaluma, J.. |
| Experimental culture of crabs, fish and prawns was conducted in a pond measuring approximately 800 m2 in Kwetu training center, Mtwapa, Kenya. The objective was to evaluate the success, potential and economic viability of the culture system. Crabs were placed in 6 experimental cages measuring 2 x 2x 0.5m for 3 months in different stocking densities in order to compare their survival. The three densities were 3.0, 6.0 and 9.0 crabs/m2. Other crabs were placed in compartments made of locally available ‘fito’ designed in eight compartments measuring 1x1 x 0.9 ft for crab fattening. In the same pond, 2045 juvenile prawns Penaeus monodon and P. indicus measuring between 21-25 mm in total length were stocked inside the pond to grow, together with milkfish and... |
| Tipo: Report |
Palavras-chave: Mtwapa; Kenya Aquaculture development Aquaculture techniques Crab fisheries Aquaculture techniques http://aims.fao.org/aos/agrovoc/c_28992. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/1310 |
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| Osore, M.; Mwaluma, J.; Kamau, J.; Wawiye, P.. |
| Samples were collected monthly at four fixed stations in Mida creek from May 1996 to April 1997, in order to determine the species composition, abundance and diversity of phytoplankton and zooplankton collected with 20- and 332-mm mesh size plankton nets respectively. Sampling also included measurement of salinity and temperature. Peaks in phytoplankton abundance occurred in May and January, following the long rains in April–May and the short rains in November–December. Zooplankton densities followed the phytoplankton peaks with the main peak occurring in February after the major phytoplankton bloom. Similarly, smaller peaks occurred in May and March. Copepods dominated the zooplankton forming up to 60% of total species composition. High zooplankton... |
| Tipo: Journal Contribution |
Palavras-chave: Zooplankton; Midacreek; Phytoplankton; Abundance; Kenya; Zooplankton. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/949 |
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| Mwaluma, J.; Nogueira Mendes, R.; Raedig, C.; Emmerson, W.; Paula, J.. |
| The larval stages of the mangrove crab Parasesarma catenata were reared in the laboratory from eggs of females collected in the Mgazana estuary, South Africa. Survival and duration of larval stages were tested for the combined effects of temperature and salinity in a factorial design experiment, using three females each with two replicates of 15 larvae per combination. Combinations were made from five temperature (15, 20, 25, 30 and 35 ºC) and four salinity values (15, 25, 35 and 45 ‰). Results were tested by ANOVA and multiple regression was applied to generate contour models by polynomial equation. It was found that P. catenata larvae develop optimally in near to seawater salinity at a temperature of around 25 ºC. These results support the assumption... |
| Tipo: Journal Contribution |
Palavras-chave: Mangroves; Crab culture; Salinity; Temperature. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/956 |
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| Mwaluma, J.. |
| A pen culture system of the mud crab, Scylla serrata was introduced in Mtwapa mangrove creek with the aim of finding an alternative source of income and food for the local communities, who practice artisanal fishery in the creek. Other objectives were to motivate the interaction between scientists and the community through technology transfer, and to collect scientific data necessary for maintenance and management of the culture system. Pen construction took place from October 2000 -January 2001. The pen was located in the intertidal area and measured 800 m2. It was constructed and fenced using uzio (fish trap) material made of mangrove poles and wood. Stocking of the pen with seed crabs occurred from February-May 2001. Local sources was used to obtain a... |
| Tipo: Journal Contribution |
Palavras-chave: Crab fisheries Scylla serrata Cultured organisms Aquaculture techniques Mangroves Rhizophora mucronata Avicennia marina ISW; Mtwapa; Kenya. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/34 |
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