Abstract Cystocarpic and tetrasporic plants were identified from three geographically separate populations of the endemic red alga, Eucheuma uncinatum Setchell and Gardner, at two sites on the east and one site on the west coasts of the Gulf of California, Mexico. Photosynthetic and respiratory rates of each population were determined under varying light, temperature and salinities. The physiological studies indicate that E. uncinatum is a stenohaline alga requiring high light tevels with peak rates of photosynthesis occurring under cooler temperatures (20-28 C)' Our findings suggest that cool temperatures, high salinities, and shallow tanks should be used in mariculture efforts. Also, higher temperatures may be a major cause of the annual life history reported for natural populations (Dawson 1971, Norris 1975). No distinctions could be found between sexual stages or populations in the levels of ash, protein carbohydrate for entire plants or for carrageenan yield, viscosity, gel strength, and chemistry including molar ratios of galactose/3, 6-anhydrogalactose/ester sulfate. Eucheuma uncinatum carrageenan has a high level of sulfation, approaching, after alkali modification, the theoretical molar ratio of 0.5/0.5/1 for galactose/3, 6-anhydrogalactose/ester sulfate. The "typical" carrageenan off. uncinatum is contrasted with the "deviant" t-carrageenan found in E. isiforme from Florida where a
Botanica Marina – de Gruyter
Published: Jan 1, 1977
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera