caa a22 4500 378931849 CHVBK 20180305123631.0 cr unu---uuuuu 161128e20040701xx s 000 0 eng 10.1515/BOT.2004.037 doi (NATIONALLICENCE)gruyter-10.1515/BOT.2004.037 Seasonal occurrence of planktonic dinoflagellates and cyst production in relationship to environmental variables in subtropical Bahı´a Concepción, Gulf of California [Elektronische Daten] [Lourdes Morquecho, Carlos H. Lechuga-Devéze] We studied seasonal prevalence of dinoflagellates and of cyst production in relation to hydrological factors in Bahía Concepción, Mexico. In situ production of dinoflagellate cysts was recorded for the first time in Mexico. The resting stage of toxic Gymnodinium catenatum, potentially toxic Alexandrium pseudogonyaulax, and other red tideforming dinoflagellates were collected in traps. Cyst associations were linked with the composition of vegetative stages in the water column, and production yields (128 to 1.465×106 cysts m-2 d-1) were comparable with other reports in areas around the world. Seasonal abundance of major meroplankton dinoflagellates and relationships with yields of newly-formed cysts coincides with hydrographic transitional periods in the water column in spring and early fall. From factor analysis, the physico-chemical variables that correlate with the presence of the major meroplanktonic species are, in descending order of importance: temperature, phosphates, dissolved oxygen, silicate, nitrite, and nitrate. In Bahía Concepción, Gonyaulacales and Scrippsiella trochoidea cysts are present during declines in algal blooms as a mechanism to counteract adverse conditions, and to secure an inoculum for blooming when favorable conditions return. In contrast, G. catenatum cysts maintain the motile stage over prolonged periods with recurrent germination. © Walter de Gruyter Hydrobiology nationallicence Mycology, fungi nationallicence Botany & plant sciences nationallicence Alexandrium pseudogonyaulax nationallicence cyst production rates nationallicence cyst traps nationallicence Gulf of California nationallicence Gymnodinium catenatum nationallicence red tide-forming dinoflagellates nationallicence Morquecho Lourdes Centro de Investigaciones Biológicas del Noroeste (CIBNOR), Apartado Postal 128, La Paz, B.C.S. 23000, Mexico aut Lechuga-Devéze Carlos H. Centro de Investigaciones Biológicas del Noroeste (CIBNOR), Apartado Postal 128, La Paz, B.C.S. 23000, Mexico aut Botanica Marina Walter de Gruyter 47/4(2004-07-01), 313-322 0006-8055 47:4<313 2004 47 botm https://doi.org/10.1515/BOT.2004.037 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1515/BOT.2004.037 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Morquecho Lourdes Centro de Investigaciones Biológicas del Noroeste (CIBNOR), Apartado Postal 128, La Paz, B.C.S. 23000, Mexico aut NATIONALLICENCE 700 1- Lechuga-Devéze Carlos H. Centro de Investigaciones Biológicas del Noroeste (CIBNOR), Apartado Postal 128, La Paz, B.C.S. 23000, Mexico aut NATIONALLICENCE 773 0- Botanica Marina Walter de Gruyter 47/4(2004-07-01), 313-322 0006-8055 47:4<313 2004 47 botm CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter