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Growth rate differences between four Chilean populations of edible seaweed Chondracanthus chamissoi (Rhodophyta, Gigartinales)
Author(s) -
Bulboa Cristian,
Macchiavello Juan,
Oliveira Eurico,
Véliz Karina
Publication year - 2008
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.2008.02028.x
Subject(s) - gigartinales , biology , thallus , photoperiodism , growth rate , algae , botany , reproduction , ecology , geometry , mathematics
The effects of temperature, photon flux density and photoperiod on the growth rate of female gametophytic and tetrasporophytic thalli of Chondracanthus chamissoi from four populations along the Chilean coast were studied in vitro . Both reproductive phases survived and grew under all the conditions tested, with growth rates varying between 0.1 and 7.5% day −1 . The results showed higher growth rates with increases in temperature and photon flux density levels. The growth rate was higher in female gametophytic thalli in almost all treatments. The photoperiod did not cause significant differences in the growth rate for either reproductive phases in any of the populations studied. Temperature was the principal factor affecting the growth rate of C. chamissoi .