Conchospore production and seasonal occurrence of somePorphyraspecies (Bangiales, Rhodophyta) in Washington State
✍ Scribed by J. Robert Waaland; Leal G. Dickson; Ellen C. S. Duffield
- Book ID
- 104618581
- Publisher
- Springer
- Year
- 1990
- Tongue
- English
- Weight
- 498 KB
- Volume
- 204-205
- Category
- Article
- ISSN
- 1573-5141
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✦ Synopsis
The leafy thalli of species of the marine red algal genus Porphyra grow rapidly but persist for a relatively short time on rocky intertidal or subtidal substrata or as epiphytes on other marine plants . In most species, the large, short-lived leafy thalli alternate with small, presumably perennial, filamentous 'conchocelis' plants . Depending on the species of northeastern Pacific Porphyra, photoperiod and temperature are important regulators of conchospore formation and release . Data from laboratory studies of conchospore formation and release in five Washington species of Porphyra (P . abottae, P . nereocystis, P. perforata, P. pseudolanceolata and P. torta) indicate that conchospores are most likely to be released at a time that precedes the appearance of the leafy thalli in the field . ' Note : Lindstrom & Cole (1990) are describing the entity called P . perforata in this paper as a new species (to be named P. fallax) .