Morphology and anatomy of Halymenia actinophysa (Halymeniales, Rhodophyta) from the southwestern Gulf of California, Mexico
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Jazmín J. Hernández-Kantun
Abstract
The original description of Halymenia actinophysa was based on few thalli and limited characteristics. Moreover, later descriptions seem to have included more than one species; the confusion of identity was exacerbated by the lack of carposporangial material. From 1995 to 2006, extensive collections of this species were made at several locations (including the type locality) in the southwestern part of the Gulf of California. The study focused on gametangial material. Our aim was to analyze the morphology and anatomy of this species (based on vegetative and reproductive features) to better understand species discrimination. Halymenia actinophysa is a foliose alga with orbiculate to elliptical ruffled blades and a gelatinous, membranous, slippery frond texture. In transverse section, the blade has a thickness of 150–300 μm, a cortex with one or two rounded or elongated cells and an internal layer with elongated, stellate cells connected to the anticlinal filaments of the medulla. Reproductive anatomy is in agreement with the modern concept of the genus and supports the concept that earlier descriptions comprised a mixture of species. The present study strongly suggests the need for a formal review of the genus Halymenia in the Gulf of California to delimit the species and to relate them to other genera of the same family.
©2009 by Walter de Gruyter Berlin New York
Articles in the same Issue
- Editorial note
- To Professor H.B.S. Womersley in honour of his continued contributions to phycology
- Research articles
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- Biology and taxonomic identity of Erythroglossumlusitanicum (Delesseriaceae, Rhodophyta) from the Iberian Peninsula
- Records of Rhodophyta new to the flora of the Iberian Atlantic coast
- Notes on the benthic marine algae of Puerto Rico. IX. Additions to the flora including reports of three species for the first time in the Atlantic Ocean
- Lomentaria benahoarensis (Lomentariaceae, Rhodophyta), a diminutive epiphytic new species from La Palma, Canary Islands (eastern Atlantic Ocean)
- Morphology and anatomy of Halymenia actinophysa (Halymeniales, Rhodophyta) from the southwestern Gulf of California, Mexico
- Typification of Antithamnion nipponicum Yamada et Inagaki (Antithamnieae, Ceramioideae, Ceramiaceae, Ceramiales, Rhodophyta)
- Effect of enzymatic digestion on thallus degradation and extraction of hydrosoluble compounds from Grateloupia turuturu
- Antioxidant and cytotoxic activities of some red algae (Rhodophyta) from Brittany coasts (France)
- Short communication
- Comparison of different procedures for the extraction and partial purification of R-phycoerythrin from the red macroalga Grateloupia turuturu
- Meetings
- Meetings
Articles in the same Issue
- Editorial note
- To Professor H.B.S. Womersley in honour of his continued contributions to phycology
- Research articles
- Long-term changes in macroalgal assemblages after increased sedimentation and turbidity in Western Port, Victoria, Australia
- Biology and taxonomic identity of Erythroglossumlusitanicum (Delesseriaceae, Rhodophyta) from the Iberian Peninsula
- Records of Rhodophyta new to the flora of the Iberian Atlantic coast
- Notes on the benthic marine algae of Puerto Rico. IX. Additions to the flora including reports of three species for the first time in the Atlantic Ocean
- Lomentaria benahoarensis (Lomentariaceae, Rhodophyta), a diminutive epiphytic new species from La Palma, Canary Islands (eastern Atlantic Ocean)
- Morphology and anatomy of Halymenia actinophysa (Halymeniales, Rhodophyta) from the southwestern Gulf of California, Mexico
- Typification of Antithamnion nipponicum Yamada et Inagaki (Antithamnieae, Ceramioideae, Ceramiaceae, Ceramiales, Rhodophyta)
- Effect of enzymatic digestion on thallus degradation and extraction of hydrosoluble compounds from Grateloupia turuturu
- Antioxidant and cytotoxic activities of some red algae (Rhodophyta) from Brittany coasts (France)
- Short communication
- Comparison of different procedures for the extraction and partial purification of R-phycoerythrin from the red macroalga Grateloupia turuturu
- Meetings
- Meetings
