Greeley, 1932



Citation


Greeley, J.R. (1932) The spawning habitats of brook, brown, and rainbow trout and the problem of egg predators. Trans. Am. Fish. Soc., pp. 239-248

Associated characteristics


Species Development state Trait Primary Data Secondary Data
Oncorhynchus mykiss Spawning conditions Mating system The two males, one slightly larger than the female, and the other typically a younger, smaller male not so large as either fish, quickly take positions, one at either side of the female [Both males and females participate in several mating acts before becoming entirelyfinished with the reprodcutive activities of a single season] No category
Salmo trutta fario Spawning conditions Mating system The male, a larger fish then the female at all observed instances of spanwing, darts to a position agasint one side of the female and curves his body toward hers in such a manner as to hold her against the bottom [Both males and females participate in several mating acts before becoming entirelyfinished with the reprodcutive activities of a single season] No category
Salvelinus fontinalis Spawning conditions Mating system The male, a larger fish then the female at all observed instances of spanwing, darts to a position agasint one side of the female and curves his body toward hers in such a manner as to hold her against the bottom [Both males and females participate in several mating acts before becoming entirelyfinished with the reprodcutive activities of a single season] No category
Oncorhynchus mykiss Spawning conditions Nycthemeral period of oviposition Spawnig observations were as follows: 10:30 A.M (one record) and 4:30 to 6:45 P.M. (six records) No category
Salmo trutta fario Spawning conditions Nycthemeral period of oviposition Species were more active during the mid-day period when the light was bright than in early morning and late evening Day
Salvelinus fontinalis Spawning conditions Nycthemeral period of oviposition Species were more active during the mid-day period when the light was bright than in early morning and late evening Day
Oncorhynchus mykiss Spawning conditions Parental care The female, throughout the long period of egg covering (a process continued for one to several hours) resents the presence of any fish at or just above the spot where the eggs lie [Male defence lasts only trough early stages of egg covering] No category
Salmo trutta fario Spawning conditions Parental care The female, throughout the long period of egg covering (a process continued for one to several hours) resents the presence of any fish at or just above the spot where the eggs lie [Male defence lasts only trough early stages of egg covering] No category
Salvelinus fontinalis Spawning conditions Parental care The female, throughout the long period of egg covering (a process continued for one to several hours) resents the presence of any fish at or just above the spot where the eggs lie [Male defence lasts only trough early stages of egg covering] No category
Oncorhynchus mykiss Spawning conditions Spawning substrate Gravels Lithophils
Salmo trutta fario Spawning conditions Spawning substrate Gravels Lithophils
Salvelinus fontinalis Spawning conditions Spawning substrate Gravels Lithophils
Oncorhynchus mykiss Spawning conditions Spawning site preparation The digging of spawning pit is exclusively a phase of female behavior Susbtrate chooser
Salmo trutta fario Spawning conditions Spawning site preparation The digging of spawning pit is exclusively a phase of female behavior [Both male and female trout defend the redd against other fish in the period just preceding spawning] Susbtrate chooser
Salvelinus fontinalis Spawning conditions Spawning site preparation The digging of spawning pit is exclusively a phase of female behavior [Both male and female trout defend the redd against other fish in the period just preceding spawning] Susbtrate chooser
Oncorhynchus mykiss Spawning conditions Spawning period duration From April 9 to April 19, 1931 9.0 weeks
Salmo trutta fario Spawning conditions Spawning period duration From November 4 to November 25 [An individual may remain on the spawning grounds for a smuch as 25 days] 4.0 weeks
Salvelinus fontinalis Spawning conditions Spawning period duration From October 24 to december 6, 1931 [An individual may remain on the spawning grounds for a smuch as 25 days] 24.0 weeks
Oncorhynchus mykiss Spawning conditions Spawning water type Headwater spring streams to large, lower-crouese streams No category
Salmo trutta fario Spawning conditions Spawning water type Spring streams, near sources of spring water No category
Salvelinus fontinalis Spawning conditions Spawning water type Spring streams, near sources of spring water No category
Oncorhynchus mykiss Egg Egg Buoyancy Sink deeply into crevices Semi-Pelagic
Oncorhynchus mykiss Larvae Sibling intracohort cannibalism The most numerous of the possible egg eaters seen around rainbow trout redds were juvenile of six to eight inches Absent
Salmo trutta fario Larvae Sibling intracohort cannibalism It is probable that the smaller brown trout may be successful in picking up a few of the eggs of their own species Absent
Salvelinus fontinalis Larvae Sibling intracohort cannibalism Small, mature males were the most abundant of the egg eaters Absent