Habitat and Ecology
Maximum size attained is 300 to 320 cm TL (females) and 220 to 270 cm TL (males) (Compagno 2001). Age and size at maturity varies regionally. Age at maturity is reported at 7.7 years (females) and 4.5 years (males) in the Southwest Atlantic by Lucifora (2003). Lucifora (2003) reports size at maturity in the Southwest Atlantic as 218 to 235 cm TL (females) and 193 cm TL (males). Longevity is estimated at 18.3 years in females and 12.8 years in males in the Southwest Atlantic (Lucifora 2003).
Average reproductive age is 17.1 yrs from demographic analysis (Goldman 2002). Natural mortality is MHoenig = 0.205, MJensen = 0.211 and MPauly = 0.198 from analyses from the Southwest Atlantic (Lucifora 2003).
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