Morfologia, distribuição e abundância de Trachurus lathami Nichols, 1920 (Teleostei: Carangidae) na região sudeste-sul do Brasil

Abstract

M orphologiaal drlta of horse-maakerel (TMeh~ latham~)

Age structure and growth of the rough scad, Trachurus lathami (Teleostei: Carangidae), in the Southeastern Brazilian Bight

“…Comparison of the growth parameters obtained here with previous estimates in Brazil (Table 3) showed that the growth pattern and age structure of T. lathami have been stable (Saccardo andKatsuragawa 1995, Saccardo et al 2005). However, the rough scad has historically presented seasonal displacements within the SEBB, resulting in variations in the space-time distribution of the individuals in each age (Saccardo 1987, Saccardo andHaimovici 2007).…”

“…Previous information on the presence of up to 400 mm TL rough scads at the SEBB (Menezes and Figueiredo 1980) denotes very rare individuals, never recorded again. Historically, the longer total lengths recorded for the rough scad in the SEBB were 260 mm (Saccardo 1987), 207 mm (Figueiredo et al 2002), 240 mm (Saccardo et al 2005) and 261 mm (Bernardes et al 2005). In all these studies, as well as in our results, individuals larger than 200 mm were seldom recorded.…”

“…The development of the otoliths of T. lathami had only been analyzed by Saccardo and Katsuragawa (1995), whose details are Using these sources and Saccardo (1987), the visual inspection of scatter plots of the total length of individuals and otolith measurements (regression models were not adjusted in these former studies), it was possible to verify that otolith development has kept a similar pattern between the 1975 and 2008-2010. Namely, OL, OH and OW in relation to TL, respectively, showed similar values.…”

“…In Brazil, their largest concentrations have been recorded both in the Southeastern Brazilian Bight (SEBB, between 22° and 28°30'S) and in the Southern region (between 28°30' and 34°S) (Saccardo and Haimovici 2007). In these areas, the rough scad is an important fishery resource in purse seines, along with other important pelagic species such as the Sardinella brasiliensis (Steindachner, 1879) and Opisthonema oglinum (Lesueur, 1818) (Saccardo andHaimovici 2007, UNIVALI 2011).…”

“…Its life cycle and fishery (Saccardo 1987, Saccardo and Kasturagawa 1995, Saccardo et al 2005; growth (Saccardo and Katsuragawa 1995); diet (Meneghetti andAlves 1971, Carvalho andSoares 2006); parasites (Braicovich et al 2012); and larvae and juveniles (Katsuragawa and Matsuura 1992, Katsuragawa and Ekau 2003, Campos et al 2010) have been investigated. Some biological aspects can be summarized from those studies, as follow.…”