Premium
Spawning behaviour of amemasu charr, Salvelinus leucomaenis leucomaenis, with a discussion of the macroevolutionary patterns of postspawning behaviour in the Salmoninae
Author(s) -
Esteve Manu,
McLennan Deborah A.,
Kawahara Mitsuru
Publication year - 2011
Publication title -
ecology of freshwater fish
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 55
eISSN - 1600-0633
pISSN - 0906-6691
DOI - 10.1111/j.1600-0633.2010.00476.x
Subject(s) - salvelinus , digging , biology , salmo , fishery , zoology , subspecies , ecology , fish <actinopterygii> , geography , trout , archaeology
– Video cameras inside underwater housings were used to record the spawning behaviour of a subspecies of the white‐spotted charr, the amemasu charr ( Salvelinus leucomaenis leucomaenis ) in the Tokimae and Onbetsu Rivers, Hokkaido, Japan. Unlike other Salvelinus species, in which females use lateral swings of their bodies to ventilate and distribute eggs over gravel crevices ( undulating ) immediately after spawning, female amemasu charr covered their eggs with beats of their tails ( cover digging ). Cover digging right after spawning has previously been documented in Salmo , Oncorhynchus and Parahucho . Phylogenetic analysis of postspawning behaviours in the Salmoninae indicated that (i) resting then covering the eggs is plesiomorphic for the group, (ii) undulating replaced resting in the ancestor of Salvelinus , (iii) cover digging was advanced in the behavioural sequence to occur immediately after egg deposition in the ancestor of Parahucho + Salmo + Oncorhynchus and in the amemasu.