425
12 Species Case Studies
of individuals (Fig. 12.9 ). Estimates of over 10,000 individuals have been reported
from a single spawning aggregation in Pohnpei from underwater census surveys
(Rhodes 1999 ) . More recent estimates at the same site found only a few hundred
individuals following intense fi shing starting in 1999 (Rhodes et al. 2011 ) , which
probably also contributed to the recently observed size and age truncation within the
population. Estimates from camoufl age grouper FSAs in Palau and FrenchPolynesia
Fig. 12.8 Estimates of female maturity based on percentage of mature active females within the
spawning aggregation during the spawning season. Boxes indicate 50% maturity estimates for
( a ) size (L 50 ) and ( b ) age (t 50 ). Sample sizes: ( a ) n = 128, ( b ) n = 125 (Rhodes et al. 2011 )
Fig. 12.9 Very large spawning aggregation of Epinephelus polyphekadion in Polynesia (Photo:
© Paul and Paveena McKenzie www.wildencounters.net )
12 Species Case Studies
of individuals (Fig. 12.9 ). Estimates of over 10,000 individuals have been reported
from a single spawning aggregation in Pohnpei from underwater census surveys
(Rhodes 1999 ) . More recent estimates at the same site found only a few hundred
individuals following intense fi shing starting in 1999 (Rhodes et al. 2011 ) , which
probably also contributed to the recently observed size and age truncation within the
population. Estimates from camoufl age grouper FSAs in Palau and FrenchPolynesia
Fig. 12.8 Estimates of female maturity based on percentage of mature active females within the
spawning aggregation during the spawning season. Boxes indicate 50% maturity estimates for
( a ) size (L 50 ) and ( b ) age (t 50 ). Sample sizes: ( a ) n = 128, ( b ) n = 125 (Rhodes et al. 2011 )
Fig. 12.9 Very large spawning aggregation of Epinephelus polyphekadion in Polynesia (Photo:
© Paul and Paveena McKenzie www.wildencounters.net )