Assessment of gonad staging systems and other ... - CiteSeerX
Assessment of gonad staging systems and other ... - CiteSeerX
Assessment of gonad staging systems and other ... - CiteSeerX
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CACAPlate 4.Whole <strong>and</strong> sectioned views <strong>of</strong> an ovary classified as F1a because it is probably an immature (F1)ovary in which oocytes have developed into the cortical alveoli stage (CA). The CA stage precedesvitellogenesis <strong>and</strong> is used to identify ovaries that are showing early signs <strong>of</strong> reproductive development(F3). It is likely that some F1a ovaries will continue developing <strong>and</strong> become reproductive whilst <strong>other</strong>swill regress back to the immature (F1) state. Note: this ovary is classified as F2-3 using the simplifiedmacroscopic <strong>staging</strong> system. Scale bar = 300 mm. Fork length <strong>of</strong> fish: 884 mm.Plate 5.Whole <strong>and</strong> sectioned views <strong>of</strong> a mature resting (F2) ovary (F2-3 using the simplified macroscopic<strong>staging</strong> system). Note the red colour <strong>of</strong> the whole ovary, which is probably due to the fish not beingbled after capture. Scale bar = 300 mm. Fork length <strong>of</strong> fish: 1500 mm.Plate 6.Whole mature resting (F2) ovaries (F2-3 using the simplified macroscopic <strong>staging</strong> system). Forklength <strong>of</strong> fish: 1021 <strong>and</strong> 1077 mm, respectively.2 Fish. Res. Rep. West. Aust.2001, 136, 1-12 Insert
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