|
International Introductions of
Oncorhynchus mykiss Introductions as compiled by FAO |
| Main Ref: | FAO 1997 | ||||
| To: | New Zealand | ||||
| FAO area: | Oceania - Inland waters | ||||
| From: | USA (California) | ||||
| FAO area: | America, North - Inland waters | ||||
| Year: | 1877 | ||||
| Range: | - | ||||
| Period: | 19th century | ||||
| Established in the wild: | established, natural reproduction | ||||
| Established in aquaculture: | - widely used | natural reproduction | |||
| Significant ecological interactions: | probably some - adverse | ||||
| Significant socio-economic effects: | some - undecided | ||||
| Introduced by: | other introducer | ||||
| Reason: | angling/sport | ||||
| Other reason: | fisheries | ||||
| Comments: | Reintroduced in 1883 and 1930. Widespread in North and South Is. Range is stable (neither expanding nor declining) (Ref. 52336). Widespread and abundant particularly in lakes. Now form the basis of valuable and appropriately famous recreational fisheries (Ref. 11115). This species was introduced by an Acclimatization Society who released them in the lake of the volcanic plateau of the central North Island where important recreational fisheries have developed. They have subsequently been established in the upper reaches of North Island and South Island rivers. No sea runs have been established; all fish are either riverine or lacustrine. The introduction has undoubtedly contributed to the decline in abundance of Lake stocks of the indigenous species Galaxias brevipinnis in the central North Island and perhaps elsewhere as well as stocks of Galaxias gracilis in Northland Lakes (Ref. 13686) through predation (Ref. 43891). Also Ref. 6452. Reference: pp186-196 in R.M. McDowall 1990: New Zealand Freshwater Fishes. A Natural History and Guide. Heinemann Reed Auckland 553 p. Ref: FAO, 1997 | ||||
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