Reproductive phenology of three species of Gelidiales (Rhodophyta) in two macroalgal communities from Tenerife (Atlantic Ocean, Canary Islands, Spain)

• Main Authors: Milena Polifrone, María Candelaria Gil-Rodríguez, Susana Domínguez Alvárez, Mascha Stroobant, María Ascensión Viera-Rodríguez
• Format: Article
• Language: English
• Published: Consejo Superior de Investigaciones Científicas 2012-12-01
• Series: Anales del Jardín Botánico de Madrid
• Subjects: sex ratio; thallus size; branching order; reproduction; gelidiales
• Online Access: http://rjb.revistas.csic.es/index.php/rjb/article/view/385

The reproductive phenology of three species of Gelidiales, Gelidium canariense, Gelidium arbuscula and Pterocladiella capillacea, was analysed seasonally for a period of one year in two localities on the West coast of Tenerife (Atlantic Ocean, Canary Islands, Spain). Considerations are provided on sex ratio, maximum length and branch order of uprights and on the length of the thalli for each sexual and asexual phase of the Canary Islands populations. The three species were characterized by a high percentage of tetrasporophytes, while female and male gametophytes have been observed only in little proportion. Only G. canariense showed gametophytes in all seasons while the occurrence of gametophytes in G. arbuscula and Pterocladiella capillacea demonstrated a clear seasonality.