Among the main sources of income for coastal residents where the exuberance of
mangroves is present, is the mangrove crab, Ucides cordatus. This component fauna
is a of essential estuarine fish recourse of the northern Brazil and gives/presents high
socioeconomic importance to city of Quatipuru, northeastern Para. The
quatipuruense community has shown strong relationship of subordination to this
organism and since 2004 has been strengthened with higher rates of production of
this fish in northern Brazil. In view of what this specie represents to the livelihood of
the residents of the region, this study aims to describe the population density of
commercial size of crab from data obtained in six months of collect, in two areas
adjacent to the Bay of Quatipuru that, currently, are at repose. In these stations, one
on the right of Rio Quatipuru, called Tracuateua (Area 01) and the other on the left,
called Quatipuru (Area 02), set up the bimonthly study of period September 2006 to
July 2007 and obtained data biometric and analyzed with the finality of produce the
maximum information possible about the population density of mangrove crab of both
areas. The Quatipuru area, though has accessibility by land and along the left margin
of the River Quatipuru for smaller ship (canoe to paddle), only showed lower rates
than 6 cm in width of carapace (biometric) during May and July 2007 in relation to the
area 01, Tracuateua. The two areas that still do not differ significantly on the density
obtained from them and present similar biometric value to other places in Brazil,
could be considered hasty the idea of return the extraction of mangrove crab in both
areas.
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