Open AccessTEMPORAL CHANGES IN THE SALINITY AND TEMPERATURE REQUIREMENTS OF TROPICAL MUSSEL LARVAE
Author(s) -
Siddall S. E.
Publication year - 1978
Publication title -
proceedings of the annual meeting ‐ world mariculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0164-0399
DOI - 10.1111/j.1749-7345.1978.tb00273.x
Subject(s) - mussel , perna viridis , salinity , metamorphosis , mytilus , biology , larva , plankton , temperature salinity diagrams , perna perna , replicate , ecology , fishery , tropical marine climate , mollusca , bivalvia , zoology , statistics , mathematics
Two species of tropical mussels of the genus Perna are presently being cultured as food resources. The brown mussel of Venezuela ( Perna perna ) is raft cultured while the Philippine green mussel ( P. viridis = Mytilus smaragdinus ) is harvested from submerged bamboo poles. For this study, I imported, quarantined and spawned adults of both species in my laboratory and reared the larvae beyond metamorphosis (24 days) in replicate cultures at 40 different combinations of temperature and salinity. Response surface analyses of data collected at intervals show significant changes in the temperature and salinity optima for growth and survival during the planktonic stages preceding metamorphosis. However, analyses of the data taken only at the termination of the experiment predict quite different optimum conditions. These data amount to a biological summation of the varying temperature and salinity requirements of the larvae throughout the experimental culture. I have developed a generalized model for the growth responses of tropical mussel larvae which is presented as a motion picture study of the changing responses to temperature and salinity.