... Perceptions of environmental changes and Lethargic Crab Disease among crab harvesters in a Brazilian coastal community Angélica MS Firmo1*, Mônica MP Tognella1, Walter LO Có2, Raynner RD Barboza3, Rômulo ... forests are Rhizophora mangle, Avicennia germinans, Avicennia schaueriana, and Laguncularia racemosa [17] Data collection and analyses Our research was undertaken between January and April/2009, ... these crab harvesters regarding environmental changes in the mangrove forests of the Mucuri River estuary, Bahia State, in northeastern Brazil and regarding Lethargic Crab Disease in the same region...