Citation:

Holcombe, G W., M S. Pasha, K M. Jensen, J E. Tietge, AND G T. Ankley. EFFECTS OF PHOTOPERIOD MANIPULATION ON BROOK TROUT REPRODUCTIVE DEVELOPMENT, FECUNDITY, AND CIRCULATING SEX STEROID CONCENTRATIONS. NORTH AMERICAN JOURNAL OF AQUACULTURE 62:1-11, (2000).

Description:

The goal of this study was to determine the feasibility of conducting reproductive studies with brook trout Salvelinus fontinalis at times other than the normal fall-spawning period...Overall viability of embryos from this spring spawning was slightly lower than the average viability of control embryos from previous studies with fall-spawning fish in our laboratory; however, hatchability of viable embryos was similar for the spring-spawning fish and those from previous studies. Hormonal profiles of E2 and T were similar for both females and males in fall- and spring-spawning brook trout. These studies demonstrate that photoperiod alterations can be used to manipulate brook trout reproductive cycles for the purpose of conducting studies at times other than the fall.

Record Details:

Record Type:DOCUMENT( JOURNAL/ PEER REVIEWED JOURNAL)

Product Published Date:01/15/2000

Record Last Revised:12/22/2005

Record ID: 80689

Show Additional Record Data

Document IDs:

EPA Number :EPA/600/J-00/152