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Life History and Ecology of the round Whitefish Prosopium cylindraceum (Pallas), of Newfound Lake, Bristol, New Hampshire
Author(s) -
Normandeau Donald A.
Publication year - 1969
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1969)98[7:lhaeot]2.0.co;2
Subject(s) - hatching , life history , fish <actinopterygii> , ecology , reef , sexual maturity , biology , fishery , pike
Life history and ecology of the round whitefish Prosopium cylindraceum (Pallas), of Newfound Lake, Bristol, New Hampshire have been studied. Field studies began the summer of 1959 and continued through December, 1965. Newfound Lake fish attain sexual maturity in their fourth or fifth year of life. Sex ratio is 50:50. Spawning occurs, during the first three weeks of December, on a shallow rocky reef located between Pikeˈs Point and Mayhew Island. Round whitefish average approximately 5,000 eggs (2,000–10,000) per female, correlated with age and size. Fertilized, water‐hardened eggs, averaged 3.94 mm in diameter. The peak of hatching occurs during the last week of April, approximately 140 days from the time of fertilization at a water temperature of 36 F.