Masters Dissertations

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Browsing Masters Dissertations by Subject "Anadara Antiquata Linnaeus"

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    Role of small scall community – based marine no take areas In conservation of Anadara Antiquata Linnaeus 1758 (Pelecypoda: Arcidae) In Fumba Peninsula, Unguja island
    (University of Dar es Salaam, 2009) Ngowo, Redfred Geofrey
    Cockle population is threatened by higher Dependence of community members as they are used as potential source of food and income. This study was assessing the role of small-scale community- based marine not-take areas in conservation of cockle (A antiquate) was through before – after (BA) and Reserve – adjacent – control (RAC) pairs method in three sites of Nyamanzi, Bondeni and Cleni in Unguja Island. Biological studies on morphometry and reproduction of A antiquata were also conducted to assess their reproductive output and factors affecting them. The mean desinty of cockles ranged between 2.27 ± 0.41 SE in reserves 1.85 ± 0.34 SE in adjacents and 0.76 ± 0.07 SE in control sites. A. antiquata were found to attain their length at firs maturity at 33 mm, 32mm and 37 mm for female, male and hermaphrodites respectively. Examination of gonads of fully matured female showed that a mean fecundity was 2.840.00 ± 141,480 SE eggs per individual and the number of eggs was found to increase with the increase in total length of A. antiquata. Small scale community-based marine not -take areasis important tool for management of A.antiquata and other molluscan bivalves. for effectives protection of bivalve stock and species biodiversity, this study is recommending having integration of management strategies through establishment of community- based no- take areas, and protection of brood stocks by setting 48mm SL as minimum size for the cockle to be collected.