Fenología y ciclo de vida del alga Gracilariopsis tenuifrons (Gracilariaceae) en Sucre, Venezuela

 

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Autoři: Brito, Leonor, Silva, Soraida
Médium: artículo original
Stav:Versión publicada
Datum vydání:2005
Popis:Fenology and life cylce of Gracilariopsis tenuifrons (Gracilariaceae) at Sucre, Venezuela. The aim of this work was to determine the frequency of different reproductive phases and to induce the germination of spores from tetrasporic and cystocarpic Gracilariopsis tenuifrons from Chacopata and La Peña, Venezuela, under controlled laboratory conditions (temperature 22 ± 1ºC, 12L:12D photoperiod, salinity of 36 ± 1 PSU and irradiance of 269 μE m-2 s-1). Tetrasporic individuals dominated numerically over gametophitic individuals. The proportion of vegetative algae was very low. Only cystocarpic algae were collected and the spermatangia were absent. Sporulation, germination and formation of algae suggest that they present a Polysiphonia-type life cycle. Algae with reproductive structures were not obtained in the laboratory,
Země:Portal de Revistas UCR
Instituce:Universidad de Costa Rica
Repositorio:Portal de Revistas UCR
Jazyk:Español
OAI Identifier:oai:portal.ucr.ac.cr:article/26621
On-line přístup:https://revistas.ucr.ac.cr/index.php/rbt/article/view/26621
Access Level:acceso abierto
Klíčové slovo:Gracilariopsis tenuifrons
phenology
life cycle
Venezuela
fenología
ciclo de vida