Spawning season

Adults collected from 4 sites in PCB-contaminated New Bedford Harbor, Massachusetts, in 1993, during their natural spawning season. Transported to laboratory and bred... 

Kondratyeva, T.P. (1977). Changes in total protein content and the composition of protein fractions in the blood serum of some Black Sea fish during the spawning season (In Russian). Gydmbiologicheskii Zhumal 13,75-79. 

Lapina, N.N. (1991). Effect of the warm effluent from an atomic power station on the physiological characteristics of female bleak during the spawning season (In Russian). Ekologiya 1991 (4), 43-50. 

Yablonskaya, E.A. (1951). Some data about the growth and metabolism in Verkhovka at spawning season (In Russian). Trudy vsesoyuznogo Gidrobiologicheskogo Obshchestva 3,140-154. 

Yuneva, T.V., Shulman, G.E., Chebanov, N.A. and Shchepkina, A.M. (1987). The docosohexaenoic acid content in muscle of male pink salmon during the spawning season (In Russian). Zhumal Evolutsionnoy Biokhimii i Physiologii 23,707-710. 

Spawning season is dependent on the exact location of this species and can range from November through May. The female deposits her eggs under rocks or shells in the intertidal zone. After she leaves, the male guards them over the next several weeks until the little ones hatch. 

In case of using biota in trend monitoring, it is common practice to collect samples at least once a year during die non-spawning season. 

The photoperiod was also shifted to 16L 8D with lights-on at 11 AM. Assays were conducted between 0900-1600h. This insured that fish were assayed within a few hours of their dawn, when they normally spawn (Stacey, 1981). Fish were not fed for 24 hours prior to testing- Experiments were conducted May-June, the normal spawning season, and only healthy males with expres-sable milt and tubercles on both their opercula and pectoral fins were used. Males had an average head-fork length of 9.3 cm and gonadosomatic index (GSI) of 3. 

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