Diversity in the Globally Distributed Diatom Genus Chaetoceros (Bacillariophyceae): Three New Species from Warm-Temperate Waters Author Li, Yang Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, College of Life Science, South China Normal University, Guangzhou, P. R. China, Author Boonprakob, Atchaneey Natural History Museum of Denmark, University of Copenhagen, Copenhagen, Denmark, & Department of Biology, Faculty of Science, Ramkhamhaeng University, Bangkok, Thailand, Author Gaonkar, Chetan C. Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Naples, Italy, Author Kooistra, Wiebe H. C. F. Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Naples, Italy, Author Lange, Carina B. Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Naples, Italy, & Department of Oceanography and Center COPAS Sur-Austral, University of Concepción, Concepción, Chile, Author Hernández-Becerril, David Instituto de Ciencias del Mar y Limnologia, Universidad Nacional Autónoma de México, Cd. Universitaria, Coyoacán, Cd. de México, México, Author Chen, Zuoyi Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, College of Life Science, South China Normal University, Guangzhou, P. R. China, Author Moestrup, Øjvind Section of Marine Biology, Institute of Biology, University of Copenhagen, Copenhagen, Denmark Author Lundholm, Nina Natural History Museum of Denmark, University of Copenhagen, Copenhagen, Denmark, text PLoS ONE 2017 e 0168887 2017-01-13 12 1 1 38 journal article 300328 10.1371/journal.pone.0168887 093dd7b1-7215-4698-a02d-a6fd7b1b965d 1932-6203 PMC5235366 28085887 12827437

Table 2. Morphological characters of resting spores of C. elegans and C. mitra.

Characters	C. elegans	C. mitra
doi:10.1371/journal.pone.0168887.t002
Apical axis (μm)	36.5±3.4	18.1±2.3 ***
	(32.5–48)	(14.6–21.4)
Pervalvar axis of primary valve (μm)	13.2±2.3	25.4±3.9 ***
	(9.0–18.5)	(21.8–36.2)
Length of branching processes (μm)	9.1±2.2	8.3±1.5
	(5.5–14.2)	(5.7–11.4)
Outer slope of elevation	Acute angle	Almost straight
Joining of two elevations	Near mantle	Halfway
Secondary valve bulges	1–2	1–2
Elevations/branching processes	1.6±0.3	3.2±0.8 ***
	(1.1–2.1)	(2.2–4.5)
*** indicates statistical difference (p<0.0001)