From our personal observations in laboratory settings, rapid rotational biting can be elicited in gunnels and pricklebacks
when they are presented with large food items.
For seine and trawl catches, unidentified small flatfish (Pleuronectidae), gadids (Gadidae), pricklebacks
(Stichaeidae), and sculpins (Cottidae) were counted in the total catch, but were not considered separate species for species richness calculations because at least one identifiable species from these taxa was captured; unidentified small snailfish and unidentified small poacher were considered separate species because no identifiable species from the families Liparidae and Agonidae were captured.
Other species that may prey on juvenile and adult shrimp include eelpouts, english sole, sand sole, pricklebacks
, giant wrymouths, staghorn sculpins, great sculpins, red rock crabs, and graceful crabs.
Vertebrate fauna encountered were typical of fauna found on similar substrate in the GOA, and included arrowtooth flounder, Atheresthes stomias, and other unidentified flatfishes; spiny dogfish, Squalus acanthias; schools of adult Pacific ocean perch, Sebastes alutus; and rougheye rockfish, Sebastes aleutianus, (the two species could not be distinguished underwater); pricklebacks
(Stichaeidae); eelpouts (Zoarcidae); and poachers (Agonidae).
Crows also fed upon nereid worms, small crabs, and intertidal fishes: Pholidae (gunnels) and Stichaeidae (pricklebacks
) living either in rock cracks or among sessile invertebrates (Table 5).
Michael Horn, a biology professor at California State University, Fullerton, examined the onshore lives of five species of monkey-faced pricklebacks
- slender, eel-like fishes that live in crevices and holes in shallow rocky areas from the Oregon coast to Baja California.
average 2 to 3 pounds, but sometimes reach 2 1/2 feet long.
* Stichaeid and pholid perciforms (pricklebacks
and gunnels) guard their egg masses by curling around them (Qasim, 1957; Hughes, 1986; Coleman, 1992).
Several species of the family Stichaeidae, commonly known as pricklebacks
, inhabit intertidal areas of the North Pacific, Arctic, and North Atlantic Oceans.
cyclospilus Smooth lumpsucker * Aptocyclus [ventricosus.sup.O], Eumicrotremus orbis Pricklebacks
* Lumpenus [maculata.sup.IMO], * L.
We measured the activities of proteases and carbohydrases in four closely related species of pricklebacks
to determine whether these fishes are genetically predisposed to digest a specific diet.
Pandalid shrimp, spinyhead sculpin (Dasycottus setiger), pricklebacks
(stichaeid), Pacific sandlance (Ammodytes hexapterus), arrowtooth flounder (Atheresthes stomias), and flathead sole (Hippoglossoides elassodon) were minor prey.