During the first year of life of Striped Bass Morone saxatilis, the effect of estuarine habitat use on growth rate is poorly understood. In a split-plot experiment, growth and feeding rates were compared between anadromous (Chesapeake Bay) and nonanadromous (Santee-Cooper) broods of juvenile striped bass (45–90 days posthatch) exposed to a range of salinity levels (0.5, 7, and 15 ppt) and temperatures (20, 24, and 28 C). At 28 C, which best simulated the summertime conditions of young juveniles, Chesapeake Bay fish showed highest growth performance. For this temperature and strain, growth was approximately 40% higher at 7 ppt than at 0.5 or 15 ppt. Santee-Cooper juveniles showed no response to salinity. Over combined temperature and salinity levels, Chesapeake Bay juveniles experienced 22% higher growth rates than did Santee-Cooper juveniles, supporting a proposal that early growth rates are inversely related to latitude. Because salinity had a strong effect on Chesapeake Bay striped bass growth rate, we also conclude that variation in distribution patterns within and among estuaries can substantially modify the expected latitudinal gradient in growth rate.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 2000 • No. 1