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Age Structures and Methods by Species

Current methods for age determinations of the species we work with. In the past, we may have used other structures or methods.

Species
Structure
Method
Bass, Black Sea (Centropristis striata) Otoliths Whole
Bluefish (Pomatomus saltatrix) Otoliths Baked & thin sectioned
Butterfish (Peprilus triacanthus) Otoliths Whole
Cod, Atlantic (Gadus morhua ) Otoliths Baked & thin sectioned
Flounder, Summer (Paralichthys dentatus) Otoliths Thin sectioned
Flounder, Windowpane (Scophthalmus aquosus) Otoliths Whole (some sectioned)
Flounder, Winter (Pseudopleuronectes americanus) Otoliths Baked & thin sectioned
Flounder, Witch (Glyptocephalus cynoglossus) Otoliths Thin sectioned
Flounder, Yellowtail (Limanda ferruginea) Scales Impressed
Goosefish (Lophius americanus) Vertebrae; Illicia Baked; thin sectioned
Haddock (Melanogrammus aeglefinus) Otoliths Thin sectioned (some whole)
Hake, Red (Urophycis chuss) Otoliths Thin sectioned
Hake, Silver (Merluccius bilinearis) Otoliths Thin sectioned
Hake, White (Urophycis tenuis) Otoliths Thin sectioned
Herring, Atlantic (Clupea harengus ) Otoliths Embedded whole
Mackerel, Atlantic (Scomber scombrus) Otoliths Embedded whole
Plaice, American (Hippoglossoides platessoides) Otoliths Thin sectioned (some whole)
Pollock (Pollachius virens) Otoliths Baked & thin sectioned
Redfish, Acadian (Sebastes fasciatus) Otoliths Thin sectioned
Scup (Stenotomus chrysops) Otoliths Thin sectioned
Surfclam, Atlantic (Spisula solidissima) Chondrophores Thin sectioned
Tilefish (Lopholatilus chamaeleonticeps) Otoliths Thin sectioned
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(File Modified May. 31 2017)