By Daniel M. Cohen
Read or Download Gadiform Fishes of the World Order Gadiformes: An Annotated and Illustrated Catalogue of Cods, Hakes, Grenadiers and Other Gadiform Fishes Known to (Fao Fisheries Synopsis, No. 125) (v. 13) PDF
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Extra info for Gadiform Fishes of the World Order Gadiformes: An Annotated and Illustrated Catalogue of Cods, Hakes, Grenadiers and Other Gadiform Fishes Known to (Fao Fisheries Synopsis, No. 125) (v. 13)
Sample text
34 Habitat, Distribution and Biology : Coastal areas to 60 m depth. Also found in brackish to fresh tidal waters. Boreal North Pacific and adjacent Arctic waters, including Arctic coast of Europe. Interest to Fisheries : Abundant fishes in some parts of their range. Key to species: 1a. 1b. lll Expanded parapophyses begin on about centrum 9 or 10 (Fig. 72a). E. gracilis Expanded parapophyses begin on about centrum 5 (Fig. 72b). Gill rakers on first arch 19 to 31 . . . . . . . . . . . .
It decreases from east to west in the European Arctic and from south to north in western Pacific waters. Furthermore, individual fecundity increases with body length, weight and age. In the Gulf of Sakhalin, a two year-old fish (17 cm length) has a minimum fecundity of 4 900 eggs while a 9 year-old individual (47 cm length) in the Gulf of Terpenie can lay a maximum of 680 000 eggs. Thus, the maximum fecundity is 139 times higher than the minimum. For example, a 20-35 cm fish along the USSR Pacific coast (Tatar Strait) has an estimated fecundity of 29 000-124 000 eggs.
59 Literature : Andriashev (1954); Moskalenko (1960); Nielsen & Jensen (1967); A n d r i a s h e v e t al. ( l 9 8 0 ) . Arctogadus glacialis Scientific Name with Reference (Peters , 1874) Fig. :2. Synonyms : Phocaegadus megalops Jensen, 1948. FAO Names : E n - A r t i c co d ; F r - M o r u e a r c tiq ue; Sp - Ba c a la o del A r tic o . Fig. 60 Diagnostic Features : Chin barbel rudimentary of absent. Gill rakers on first arch 30 (27 to 34). 0) of standard length. Not all specimens can be readily identified with these characters.