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Morphological variability of the planktonic diatom Thalassiosira delicatula Ostenfeld emend. Hasle from the Mexican Pacific, in culture conditions

David U. Hernandez-Becerril ; Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México (UNAM), Apdo. postal 70-305, México, D.F. 04510 México.
Sara P. Moreno-Gutierrez ; Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México (UNAM), Apdo. postal 70-305, México, D.F. 04510 México.
Sofia A. Baron-Campis ; Instituto Nacional de Pesca, Pitágoras 1320, Col. Sta. Cruz Atoyac; México, D.F. 03310 México

Puni tekst: engleski, pdf (465 KB) str. 313-321 preuzimanja: 1.169* citiraj
APA 6th Edition
Hernandez-Becerril, D.U., Moreno-Gutierrez, S.P. i Baron-Campis, S.A. (2009). Morphological variability of the planktonic diatom Thalassiosira delicatula Ostenfeld emend. Hasle from the Mexican Pacific, in culture conditions. Acta Botanica Croatica, 68 (2), 313-321. Preuzeto s https://hrcak.srce.hr/41432
MLA 8th Edition
Hernandez-Becerril, David U., et al. "Morphological variability of the planktonic diatom Thalassiosira delicatula Ostenfeld emend. Hasle from the Mexican Pacific, in culture conditions." Acta Botanica Croatica, vol. 68, br. 2, 2009, str. 313-321. https://hrcak.srce.hr/41432. Citirano 21.10.2021.
Chicago 17th Edition
Hernandez-Becerril, David U., Sara P. Moreno-Gutierrez i Sofia A. Baron-Campis. "Morphological variability of the planktonic diatom Thalassiosira delicatula Ostenfeld emend. Hasle from the Mexican Pacific, in culture conditions." Acta Botanica Croatica 68, br. 2 (2009): 313-321. https://hrcak.srce.hr/41432
Harvard
Hernandez-Becerril, D.U., Moreno-Gutierrez, S.P., i Baron-Campis, S.A. (2009). 'Morphological variability of the planktonic diatom Thalassiosira delicatula Ostenfeld emend. Hasle from the Mexican Pacific, in culture conditions', Acta Botanica Croatica, 68(2), str. 313-321. Preuzeto s: https://hrcak.srce.hr/41432 (Datum pristupa: 21.10.2021.)
Vancouver
Hernandez-Becerril DU, Moreno-Gutierrez SP, Baron-Campis SA. Morphological variability of the planktonic diatom Thalassiosira delicatula Ostenfeld emend. Hasle from the Mexican Pacific, in culture conditions. Acta Botanica Croatica [Internet]. 2009 [pristupljeno 21.10.2021.];68(2):313-321. Dostupno na: https://hrcak.srce.hr/41432
IEEE
D.U. Hernandez-Becerril, S.P. Moreno-Gutierrez i S.A. Baron-Campis, "Morphological variability of the planktonic diatom Thalassiosira delicatula Ostenfeld emend. Hasle from the Mexican Pacific, in culture conditions", Acta Botanica Croatica, vol.68, br. 2, str. 313-321, 2009. [Online]. Dostupno na: https://hrcak.srce.hr/41432. [Citirano: 21.10.2021.]

Sažetak
Cultures of marine microalgae have greatly contributed to the better understanding of the morphology, phylogeny, life cycles, physiology and ecology of these species. In this paper, the planktonic diatom Thalassiosira delicatula Ostenfeld emend. Hasle, originally isolated and cultured (in f/2 medium, a light-darkness cycle of 12:12, and at temperature of 20 °C ± 2 °C) from material obtained from the tropical, southern Mexican Pacific, was studied by LM, SEM and TEM. General morphology of the species agrees well with previous descriptions, including the formation of chains and colonies embedded in mucilage, the chitin threads connecting cells in the chain, the shape of the cells (in girdle view rectangular with a concavity in the valve centre), and processes (with a large rimoportula between valve face and mantle, a marginal ring of occluded ones, and two or three marginal rings of fultoportulae) and areolae arrangement. However the shape and distribution of chloroplasts and threads produced by marginal fultoportulae in living cells, and the presence of more than one central fultoportula, close to a larger areola (two and three fultoportulae were detected in this study) had never been described. Urn-shaped marginal fultoportulae were also very common in most specimens studied, whereas in the literature this character was found only once for the species. Additionally, two rimoportulae were detected in at least one valve. This morphological variability is discussed. This species is a new record for the Mexican Pacific and also the first record of the northern Pacific Ocean.

Ključne riječi
diatom; phytoplankton, Thalassiosira; culture; morphology; ultrastructure; variability

Hrčak ID: 41432

URI
https://hrcak.srce.hr/41432

Posjeta: 1.485 *