The sheepshead (Archosargus probatocephalus) occurs from Nova Scotia (Gilhen et al., 1976) to Brazil (Caldwell, 1965) and is common in coastal waters from Chesapeake Bay to Texas in the United States (Bigelow and Schroeder, 1953; Collette and Klein-MacPhee, 2002).
Systematics and variation in the sparid fish Archosargus probatocephalus. Bull.
Abundant grazers are omnivorous and include the spottail pinfish Diplodus holbrooki, the pinfish Lagodon rhomboides, and the sheepshead Archosargus probatocephalus, all of which are abundant in summer.
In the field, we observed fish (sheepshead, Archosargus probatocephalus) scraping barnacles from open-sided cages, and assume that they may have been responsible for generating these differences.
The most abundant bycatch species of fisheries interest were blue crab and Florida stone crab; sheepshead (Archosargus probatocephalus
) and black sea bass (Centropristis striata) were also among DCP bycatch (Fig.
Postflexion 112 31 Juvenile 4 2 Archosargus probatocephalus
Postflexion 24 7 Juvenile 1 1 Lagodon rhomboides Postflexion 2 2 Juvenile 54 23 Chasmodes saburrae Flexion 258 60 Postflexion 116 37 Juvenile 1 1 Hypsoblennius spp.
The tagged fish were from seven species: red drum (Sciaenops ocellatus); black drum (Pogonias cromis); sheepshead (Archosargus probatocephalus); common snook (Centropomus undecimalis); spotted seatrout (Cynoscion nebulosus); bull shark (Carcharhinus leucas); and crevalle jack (Caranx hippos).
Red drum (Sciaenops ocellatus) was the most commonly tagged species (n=2064), followed by black drum (Pogonias cromis, n=1468), sheepshead (Archosargus probatocephalus, n = 1117), common snook, (Centropomus undecimalis, n=510), spotted seatrout (Cynoscion nebulosus, n=364), crevalle jack (Caranx hippos, n=114), and bull shark (Carcharhinus leucas, n=25).
Cage presence likely reduced predator prey interactions through the exclusion of larger predators, such as large blue crabs, cownose rays, striped bass (Morone saxatilis), sheepshead (Archosargus probatocephalus
), and oyster toadfish (Opsanus tau).
Sheepshead (porgy) Juveniles and adults common on Archosargus probatocephalus
southern Bight reef habitats.
Age and growth of sheepshead Archosargus probatocephalus
in Louisiana waters using otoliths.
Within the Chordata family, different life stages were seen for the sheepshead Archosargus probatocephalus
(length 4.4-9.7 cm, biomass 8.5-19.8 g), pinfish Lagodon rhomboides (length 2.3-7.7 cm, biomass 0.1-8.3), gray snapper Lutjanus griseus (length 3.0-11.2 cm, biomass 0.6-21.3 g), oyster toadfish Opsanus tau (length 2.3-9.0 cm; biomass 0.2-13.3 g), and numerous killifish and goby species (Table 5).
Among marine teleosts from the GOM, a similar pattern of growth has been shown for red drum, Sciaenops ocellatus (Beckman et al., 1988), sheepshead, Archosargus probatocephalus
(Beckman et al., 1991), and cobia, Rachycentron canadum (Franks et al., 1998).
Young pinfish Lagodon rhomboides were collected on Caloosahatchee reefs, and sheepshead Archosargus probatocephalus
were found on oyster reefs in all three estuaries.
It is pertinent to note that pinfish, Lagodon rhomboides, and sheepshead, Archosargus probatocephalus
, were both collected in the vicinity of sampling sites (Volety et al.