Temperature responses of economically important red algae and their potential for mariculture in Brazilian waters |
| |
Authors: | Nair S. Yokoya Eurico C. Oliveirã |
| |
Affiliation: | (1) Instituto de Botânica, Secretaria de Estado do Meio Ambiente, Caixa Postal 4005, 01061-970 São Paulo, Brazil;(2) Instituto de Biociências e Centro de Biologia Marinha, Universidade de São Paulo, Caixa, Postal 11.461, 05508-900, São Paulo, Brazil |
| |
Abstract: | Data are presented on temperature responses, based onin vitro growth performance, of eight species of colloid-producing red algae; these include the five most important commercial species of agarophytes in South America. The temperature optima do not conform strictly to geographic distribution, and intolerance to high temperature is not the factor that controls the spreading of temperate species ofGracilaria to warmer areas. WithinPterocladia capillacea (Gmelin) Bornet et Thuret, populations from two distinct localities had different responses to temperature optima. Data suggest that the disjunct distribution of this species in the American Atlantic is due to its poor performance at temperatures above 26 °C. The fastest maximum growth rate was observed inHypnea cornuta (Lamouroux) J. Agardh (doubling time 2.8 d), and the slowest inP. capillacea from Cabo Frio (doubling time 50.0 d). All the species studied, including the valuable Chilean and Argentinean species ofGracilaria, could tolerate the temperature regimes of the Brazilian waters. |
| |
Keywords: | temperature growth red algae mariculture Brazil |
本文献已被 SpringerLink 等数据库收录! |
|