
%0 Journal Article
%A Hogan, AE 
%A Nicholson, JC 
%T Sperm motility of sooty grunter, <I>Hephaestus fuliginosus</I> (Macleay), and jungle perch, <I>Kuhlia rupestris</I> (Lac&#233;p&#232;de), in different salinities
%J Marine and Freshwater Research
%D 1987/08/01
%V 38
%N 4
%P 523-528
%K 
%R https://doi.org/10.1071/MF9870523
%U https://www.publish.csiro.au/paper/MF9870523 
%X The spawning habitat of jungle perch is unknown. It coexists in the short, fast-flowing freshwater streams of north-eastern Queensland with sooty grunter, a known freshwater spawner. The duration and intensity of sperm motility in various dilutions of sea-water were compared to indicate whether jungle perch spawn in fresh water or salt water. Sooty grunter sperm was most active in salinities of 0 g l-1 and 5 g i-1, and not motile in salinities above 15 g l-1. Jungle perch sperm was not motile in fresh water, but most active in 25 g I-1. These results, together with fish distribution studies in estuaries, indicated that jungle perch probably spawn in the sea in salinities above 25 g I-1.. 
