On the Development of Hyaline Hairs Hypnea Lamouroux (Rhodophyta, Gigartinales)

On the Development of Hyaline Hairs Hypnea Lamouroux (Rhodophyta, Gigartinales) Introduction The occurrence of unicellular hyaline hairs in the red algae is well documented in the literature (Dixon 1973). Boergesen (1920) was first to note hyaline hair cells in Hypnea Lamouroux and he further observed their abundance more in littoral than in deep water specimens. He therefore suggested that their development is promoted by high light intensity. Kylin (1930) also commented on the hairs of musciformis (Wulf) Lamouroux, stating that they are ephemeral in nature and can be detected only on the young portions of the thallL However, it is not known whether the embryonic stages of Hypnea also produce hyaline hairs. The present paper deals with the development of hyaline hairs, It was conducted in an attempt to advance our knowledge in this area using two species of Hypnea from Hawaii, Materials and Methods Carpospores and tetraspores from fertile fronds of Hypnea cervicornis J. AgP and H chordacea Kütz. collected from Diamond Head Beach Park, Oahu Island (Hawaii) were settled on glass slides and cultured in the laboratory. Four culture media (changed every four days) were used, viz.> millipore filtered seawater (millipore füter of 0.45 pore size), medium cited in McBride and Cole (1972), Provasoli's (1968) medium, http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Botanica Marina de Gruyter

On the Development of Hyaline Hairs Hypnea Lamouroux (Rhodophyta, Gigartinales)

Botanica Marina, Volume 19 (5) – Jan 1, 1976

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Publisher
de Gruyter
Copyright
Copyright © 2009 Walter de Gruyter
ISSN
0006-8055
eISSN
1437-4323
DOI
10.1515/botm.1976.19.5.309
Publisher site
See Article on Publisher Site

Abstract

Introduction The occurrence of unicellular hyaline hairs in the red algae is well documented in the literature (Dixon 1973). Boergesen (1920) was first to note hyaline hair cells in Hypnea Lamouroux and he further observed their abundance more in littoral than in deep water specimens. He therefore suggested that their development is promoted by high light intensity. Kylin (1930) also commented on the hairs of musciformis (Wulf) Lamouroux, stating that they are ephemeral in nature and can be detected only on the young portions of the thallL However, it is not known whether the embryonic stages of Hypnea also produce hyaline hairs. The present paper deals with the development of hyaline hairs, It was conducted in an attempt to advance our knowledge in this area using two species of Hypnea from Hawaii, Materials and Methods Carpospores and tetraspores from fertile fronds of Hypnea cervicornis J. AgP and H chordacea Kütz. collected from Diamond Head Beach Park, Oahu Island (Hawaii) were settled on glass slides and cultured in the laboratory. Four culture media (changed every four days) were used, viz.> millipore filtered seawater (millipore füter of 0.45 pore size), medium cited in McBride and Cole (1972), Provasoli's (1968) medium,

Journal

Botanica Marinade Gruyter

Published: Jan 1, 1976

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