Caracterização macro- e microscópica dos ovários do bagre amarelo, Cathorops spixii (Agassiz, 1829), durante o ciclo reprodutivo

Population Dynamics and Diet of the Madamango Sea Catfish Cathorops spixii (Agassiz, 1829) (Siluriformes: Ariidae) in a Tropical Bight in Southeastern Brazil

“…The constancy of individuals of a similar size range (9.5 cm mode) throughout the sampling period is most likely to result from the presence of different cohorts. This species' smallest recorded size at first maturity is 9.5 cm SL [18] , [20] . Rueda and Defeo [7] , in Colombia, found virtually no mature individual of C. spixii under 15 cm in length (TL), which corresponds to approximately 12.5 cm SL according to the estimates for the present population.…”

“…Although many studies have included some features of this species, knowledge about its ecological aspects is mostly included in community studies, and mainly from estuarine regions [7] , [11] – [15] . Most of the specifically ecological studies on the species or family deal with reproduction [16] – [20] , and those on habitat use were, again, conducted primarily in estuaries [14] , [21] , [22] , as were studies on diet [19] , [23] , [24] .…”

Caracterização bioquímica e biológica de toxinas presentes na peçonha e no muco do bagre Cathorops spixii.

“…Os trabalhos realizados até o momento referem-se principalmente a biologia reprodutiva (SILVA, 1996;SILVA et al, 1998), variação espacial e temporal (AZEVEDO et al, 1999), hábitos alimentares (REYNA-KURTZ, 2003), distribuição e reprodução (MELO e TEIXEIRA, 1992). Entretanto trabalhos realizados pelo nosso grupo com o Cathorops spixii mostraram que a peçonha e o muco induzem nocicepção e edema em camundongos (MONDIN et al, 2007).…”