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Fenología y ciclo de vida del alga Gracilariopsis tenuifrons (Gracilariaceae)en Sucre, Venezuela / Fenology and life cylce of Gracilariopsis tenuifrons (Gracilariaceae)at Sucre, Venezuela
Brito L, Leonor; Silva, Soraida.
Affiliation
  • Brito L, Leonor; Universidad de Oriente. Instituto Oceanográfico de Venezuela. Cumaná. VE
  • Silva, Soraida; Universidad de Oriente. Instituto Oceanográfico de Venezuela. Cumaná. VE
Rev. biol. trop ; 53(supl.1): 67-73, maio 2005. ilus, graf
Article in Es | LILACS | ID: lil-456497
Responsible library: BR1.1
ABSTRACT
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 ±1 ºC,12L12D 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
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Index: LILACS Main subject: Spores / In Vitro Techniques / Germination / Rhodophyta / Life Cycle Stages Limits: Animals Country/Region as subject: America do sul / Venezuela Language: Es Journal: Rev. biol. trop Journal subject: BIOLOGIA / MEDICINA TROPICAL Year: 2005 Type: Article / Project document
Search on Google
Add to My VHL
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Index: LILACS Main subject: Spores / In Vitro Techniques / Germination / Rhodophyta / Life Cycle Stages Limits: Animals Country/Region as subject: America do sul / Venezuela Language: Es Journal: Rev. biol. trop Journal subject: BIOLOGIA / MEDICINA TROPICAL Year: 2005 Type: Article / Project document