“…In an Amazon estuary, P. gracilis and other brachyurans (principally ocypodids and grapsoids) suffer high rates of predation by the Pemecou sea catfish Sciades herzbergii (Bloch, 1794), known locally as the guribu, which uses Amazonian mangroves as nurseries and feeds predominantly on brachyurans throughout its life cycle (Giarrizzo and Saint-Paul, 2008). The available data on P. gracilis include studies of the development of its larvae (Ingle, 1987;Brossi-Garcia and Rodrigues, 1993), megalopae juveniles (Arruda and Abrunhosa, 2011), megalopal transport mechanisms , the abundance of the larvae (Vieira, 2006), the production of spermatophores and seminal fluid (Tiseo et al, 2014;, hull fouling (Cuesta et al, 2016) and general occurrence records (Hartnoll, 1965;Powers, 1977;Coelho and Ramos-Porto, 1980;Melo, 1996;Almeida and Coelho, 2008;Melo, 2008;Gain et al, 2017;Briones-Fourzan et al, 2020).…”