BIODIVERSITY, DISTRIBUTION AND MORPHOLOGICAL CHARACTERIZATION OF MUSHROOMS IN MANGROVE FOREST REGIONS OF BANGLADESH

Abstract

A survey was conducted on biodiversity and distribution of mushrooms in mangrove forest regions of Bangladesh. Mangrove (Sundarban), is the largest single block of tidal halophytic mangrove forest in the world, located in the south western part of Bangladesh. It lies on the Ganges-Brahmaputra Delta at the point where it merges with the Bay of Bengal. The forest lies a little south to the Tropic of Cancer between the latitudes 21°30'N and 22°30'N, and longitudes 89°00'E and 89°55'E. A total 35 mushroom species belonging to 24 genera under 17 families were recorded during the survey. The mushroom species of Pycnoporous sanguineus was found on the dead logs of Sundari (Heritiera fomes) tree with the frequency and the density of 75% and was 22.86%, respectively. Among the collected species, the highest frequency was 75% for Volvariella speciosa, Auricularia cornea, Marasmiellus albuscorticis, followed by 50% for Agaricus campestris, Agaricus aungustus, Lepiota atrodisca, Trametes sp., Daedaleopsis confragosa, Marasmius siccus, Schizophyllum sp., Schizophyllum commune, Volvariella hypopithys, Ganoderma sp., Crepidotus alabamenis, Heimiomyces neovelutipes and Irpex lacteus.The lowest frequency was 25% for the rest of the species. Highest density was 262.86% for Coprinus silvaticus followed by 97.14% for Marasmiellus albuscorticisi and lowest density was 2.86% for Chlorophyllum molybdites, Trametes versicolar, Gloeophyllum sepiarlum, and Pleurotus ostreatus.