RE: NANFA-- collecting at night

Dave Neely (
Thu, 13 Jul 2000 10:53:59 CDT


>How about sculpins, Dave?

back in 1991-1992 I made a lot of snorkeling observations on courtship
behavior in the checkered sculpin of the Potomac River drainage (Cottus sp
cf. cognatus). They were much more active at night, but if food items were
availale, they would come out during the day and forage- one mayfly hatch I
witnessed had sculpins coming 10-15 cm off the bottom to take drifting
nymphs. The streams also had large populations of brown trout, and I saw
several sculpins get picked off while they were otherwise occupied.

Most of the other sculpins I've snorkeled/dove with (C. bairdi, C. beldingi,
C. carolinae, C. confusus, C. girardi, C. gulosus, C. rhotheus, and many
undescribed taxa) follow the same general pattern.

I would love to dive Lake Washington (WA), and Cultus Lake (BC) to see if
the pelagic sculpins there have the same behavioral repertoire.



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