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Observations on the morphological diversity and distribution of two siliceous nannoplankton genera, Hyalolithus and Petasaria

Citation

Jordan, RW and Abe, K and Cruz, J and Eriksen, R and Guerreiro, C and Hagino, K and Heldal, M and Hernandez-Becerril, DU and Malinverno, E and Nishida, S and Patil, SM and Supraha, L and Thomsen, HA and Triantaphyllou, MV and Young, JR, Observations on the morphological diversity and distribution of two siliceous nannoplankton genera, Hyalolithus and Petasaria, Micropaleontology, 61, (6) pp. 439-455. ISSN 0026-2803 (2016) [Refereed Article]

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Copyright 2016 Micropaleontology Press

Official URL: http://www.micropress.org/microaccess/micropaleont...

Abstract

Scale-bearing siliceous nannoplankton are occasionally encountered in surface seawater samples, but are rarely identified or illustrated. In this study, the morphological diversity of the haptophyte Hyalolithus neolepis and the enigmatic Petasaria heterolepis are investigated in scanning and transmission electron microscopes using materials from around the world. Results show that H. neolepis scales exhibit variation in the width of the marginal hyaline area, but intermediate specimens make separation of the two morphologies difficult. Petasaria heterolepis scales also show differences, in the presence of tubercle rows in the hyaline area and degree of hyaline areal coverage, but separation into discrete varieties is difficult at present. However, specimens with scales bearing a protuberance are considered to be distinct enough to warrant the erection of a new species, Petasaria protuberans Jordan, Malinverno, Supraha, Thomsen et Young sp. Nov.

Item Details

Item Type:Refereed Article
Keywords:biogeography, marine, nannoplankton, Hyalolithus, Petasaria
Research Division:Biological Sciences
Research Group:Evolutionary Biology
Research Field:Plant Systematics and Taxonomy
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Biological Sciences
Author:Eriksen, R (Dr Ruth Eriksen)
ID Code:107836
Year Published:2016
Web of Science® Times Cited:3
Deposited By:Centre for Ecology and Biodiversity
Deposited On:2016-03-30
Last Modified:2017-11-08
Downloads:0

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