The reproductive biology of the plata pompano, Trachinotus marginatus (Teleostei: Carangidae), in southern Brazil

Abstract

The Plata pompano, Trachinotus marginatus (Cuvier, 1832), is an endemic carangid of the Southwestern Atlantic Ocean, occurring from Rio de Janeiro to Uruguay. This study describes the reproductive period, spawning type, the size at first gonadal maturation and the length-weight relationship of individuals sampled from landings of the artisanal and commercial fishing fleets in Rio Grande that operate along the coast of Rio Grande do Sul state, southern Brazil (~ 32ºS) to the Uruguayan border (~ 34ºS). Monthly collections from September 2008 through January 2010 yielded 274 individuals ranging from 142 to 444 mm in total length (TL). The gonadal development stages were defined according to the histological examination of the ovaries and the testes. The relationship between TL (mm) and total weight TW (g) was statistically different between males (TW = 0.000463*TL2.7655) and females (TW = 0.000361*TL2.8131), showing negative allometric growth for both sexes. The sizes at first maturity were 187.2 mm and 254.9 mm for females and males, respectively. The presence of two modal groups of oocyte diameters suggested that total spawning occurred. The interpretation of the monthly variations of the condition factor and gonadosomatic index, which are associated with higher frequencies of the more advanced stages of gonadal development, identified the spring and summer months as the reproductive period, with a peak in the reproductive activity during November and January. These results suggested that the species has an opportunistic reproductive strategy

Broodstock development, induced breeding and larval rearing of Indian pompano, Trachinotus mookalee, (Cuvier, 1832) – A new candidate species for aquaculture

“…3). Similar to the present study, Lemos et al (2011) reported synchronous oocytes development in plata pompano, Trachinotus marginatus collected from wild. The cytoplasmic inclusion bodies were observed in oocytes larger than 150 μm in diameter and might be indicators of secondary growth of oocytes and beginning of vitellogenesis (Fig.…”

Reproductive traits of the pompano, Trachinotus ovatus (Linnaeus, 1758), in the north-western Mediterranean

“…the giant trevally Caranx ignobilis and bluefin trevally Caranx melampygus in Hawaii (Sudekum et al, 1991), the horse mackerel Trachurus trachurus in Greece (Karlou-Riga & Economidis, 1997), the permit Trachinotus falcatus in Florida (Crabtree et al, 2002), the short-fin pompano Trachinotus teraia in the Ivory Coast (Sylla et al, 2009) and the plata pompano Trachinotus marginatus in southern Brazil (Lemos et al, 2011). Other species of carangids also present a short and well-defined spawning period during the spring and summer months, e.g.…”

Feeding activity of the cayenne pompano Trachinotus cayennensis (Cuvier 1832) (Perciformes, Carangidae) in estuaries on the western coast of the state of Maranhão, Brazil

“…According to Lemos et al (2011), individuals of the genus Trachinotus reach first gonadal maturation around 21.14 cm, which indicates the existence of the sustainable exploitation of T. cayennensis captured on the west coast of the state of Maranhão, Brazil, considering the higher incidence of individuals captured in the 29.2 to 33.0 cm class.…”