TY - JOUR
T1 - Effects of growth medium, temperature, salinity and seawater source on the growth of Gymnodinium catenatum (Dinophyceae) from Bahía Concepción, Gulf of California, Mexico
AU - Band-Schmidt, C. J.
AU - Morquecho, L.
AU - Lechuga-Devéze, C. H.
AU - Anderson, D. M.
N1 - Funding Information:
The authors thank D. Kulis for his assistance in the growth experiments and D. Góngora and F. Zapata for their assistance during field work. They also thank CIB-NOR Graduate Program and the National Council of Science and Technology (CONACyT) for financial and logistical support (grant 144382 to C.J.B.-S.). This research was supported in part by CIBNOR Institutional Research Projects AYCG-8, AYCG-11 (1999– 2000) and CONACyT grant R33598-B. This work was also supported by NOAA Grant no. NA96OP0099 and NSF Grant no. OCE-9808173 (to D.M.A.) under the U.S. ECOHAB Program sponsored by NOAA, EPA, NSF, NASA and ONR. This is Contribution Number 11205 from the Woods Hole Oceanographic Institution and 114 from the ECOHAB Program.
PY - 2004/12
Y1 - 2004/12
N2 - Laboratory studies were performed to determine the effect of temperature, salinity, seawater sources and culture media on the vegetative growth of clonal cultures of Gymnodinium catenatum isolated from Bahia Concepción, Mexico. These isolates were heterothallic and isogamous. Exponential growth rates of G. catenatum in f/2 with different selenium concentrations and soil extract and GSe media were moderate. Maximum cell yields were obtained in GSe and f/2 media with selenium (10-8 and 10-7 M), while in f/2 medium with soil extract cell yields were considerably lower. The highest percentage of long chains was found in f/2 media supplied with selenium (10-8 M). The optimal temperature range for growth was 11.5-30°C, with the highest growth rates between 21 and 29°C. The range of salinity tolerated by G. catenatum changed with seawater source. With seawater from Vineyard Sound (Massachusetts, USA), G. catenatum grew at salinities from 15 to 36, with an optimal growth rate obtained at salinities between 26 and 30. With seawater from Bahía Concepción, this species tolerated salinities from 25 to 40, with optimal growth at salinities between 28 and 38. Ecophysiological measurements reported here are consistent with the environment of the bay, which has limited input of humic materials from runoff and high salinity and temperature. These data, when viewed with data from studies of globally distributed G. catenatum, demonstrate the ability of this species to live in a broad array of habitats.
AB - Laboratory studies were performed to determine the effect of temperature, salinity, seawater sources and culture media on the vegetative growth of clonal cultures of Gymnodinium catenatum isolated from Bahia Concepción, Mexico. These isolates were heterothallic and isogamous. Exponential growth rates of G. catenatum in f/2 with different selenium concentrations and soil extract and GSe media were moderate. Maximum cell yields were obtained in GSe and f/2 media with selenium (10-8 and 10-7 M), while in f/2 medium with soil extract cell yields were considerably lower. The highest percentage of long chains was found in f/2 media supplied with selenium (10-8 M). The optimal temperature range for growth was 11.5-30°C, with the highest growth rates between 21 and 29°C. The range of salinity tolerated by G. catenatum changed with seawater source. With seawater from Vineyard Sound (Massachusetts, USA), G. catenatum grew at salinities from 15 to 36, with an optimal growth rate obtained at salinities between 26 and 30. With seawater from Bahía Concepción, this species tolerated salinities from 25 to 40, with optimal growth at salinities between 28 and 38. Ecophysiological measurements reported here are consistent with the environment of the bay, which has limited input of humic materials from runoff and high salinity and temperature. These data, when viewed with data from studies of globally distributed G. catenatum, demonstrate the ability of this species to live in a broad array of habitats.
UR - http://www.scopus.com/inward/record.url?scp=11844283369&partnerID=8YFLogxK
U2 - 10.1093/plankt/fbh133
DO - 10.1093/plankt/fbh133
M3 - Artículo
SN - 0142-7873
VL - 26
SP - 1459
EP - 1470
JO - Journal of Plankton Research
JF - Journal of Plankton Research
IS - 12
ER -