Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.3/2025
Título: Morphology and life history studies of Scytosiphon lomentaria (Scytosiphonaceae, Phaeophyceae) from the Azores.
Autor: Parente, Manuela I.
Neto, Ana I.
Fletcher, Robert L.
Palavras-chave: Life History
Microspongium gelatinosum
Scytosiphon lomentaria
Data: Abr-2003
Editora: Wiley-Blackwell
Citação: Parente, Manuela I., Neto, Ana I., Fletcher, R.L. (2003). "Morphology and life history studies of Scytosiphon lomentaria (Scytosiphonaceae, Phaeophyceae) from the Azores". «Journal of Phycology», 39(2): 353-359. http://dx.doi.org/10.1046/j.1529-8817.2003.02032.x.
Resumo: Morphological and culture studies of Scytosiphon lomentaria (Lyngbye) Link and Microspongium gelatinosum Reinke (Scytosiphonaceae, Phaeophyceae) were undertaken on material collected on the Island of São Miguel, Azores, where both species were commonly found. Erect thalli of S. lomentaria collected in the field were up to 33 cm long and 2.3 mm wide, tubular, hollow, and commonly constricted at intervals. The plurilocular sporangia were positioned in continuous sori on the thallus surface. Ascocysts were present. In the field, M. gelatinosum formed crustose to slightly pulvinate plants, were spongy in texture, and dark brown to black in color, which were circular or irregularly spreading over several centimeters and firmly attached to the substratum. Sessile unilocular sporangia were located in sori on the crust surface. In culture S. lomentaria plurispores developed into Microspongium like crustose prostrate thalli that formed unilocular sporangia. Unispores developed into new erect thalli that formed plurilocular sporangia. Sexual reproduction was not observed. In culture, M. gelatinosum unispores developed into erect thalli identical with S. lomentaria. These results are similar to those reported for other areas and suggest the occurrence in the Azorean plants of a monophasic and heteromorphic life history, involving both entities studied.
Descrição: Copyright © 2003 Phycological Society of America.
Peer review: yes
URI: http://hdl.handle.net/10400.3/2025
ISSN: 0022-3646 (Print)
1529-8817 (Online)
Versão do Editor: http://dx.doi.org/10.1046/j.1529-8817.2003.02032.x
Aparece nas colecções:DBIO - Artigos em Revistas Internacionais / Articles in International Journals

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