- Iwame trout
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Iwame trout Conservation status Scientific classification Kingdom: Animalia Phylum: Chordata Class: Actinopterygii Order: Salmoniformes Family: Salmonidae Genus: Oncorhynchus Species: O. masou Variety Oncorhynchus masou var. iwame
Synonyms Oncorhynchus iwame Kimura & Nakamura, 1961
The iwame trout or markless trout, Oncorhynchus masou var. iwame, is a variety of salmonid fish inhabiting some fresh waters of Japan. Suspected to be not a real species since some time, it was recently confirmed to be a particular intra-specific morph occurring in some populations of the masu salmon or seema (Oncorhynchus masou). This morph is recessively inherited.
This morph occurs in the amago subspecies ((Oncorhynchus masou ishikawae) and apparently also in the nominate subspecies yamame (Oncorhynchus masou masou), if these are not identical.
References
- Kano, Y., Shimizu, Y., Kondou, K. 2006. Sympatric, simultaneous, and random mating between markless trout (iwame; Oncorhynchus iwame) and red-spotted masu salmon (amago; Oncorhynchus masou ishikawae). Zoological Science 23:71-77. doi: 10.2108/zsj.23.71
- Kano, Y., Kondou, K., Shimizu, Y. 2009. Present status and conservation of the markless forms of stream-resident masu salmon Oncorhynchus masou (the so-called 'iwame') in Japanese mountain streams. Ichthyological Research 57:78-84 DOI: 10.1007/s10228-009-0130-1
- Kottelat, M. 1996. Oncorhynchus iwame. 2006 IUCN Red List of Threatened Species. Downloaded on 4 August 2007.
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