SOME PRYMNESIACEAE (HAPTOPHYTA, PRYMNESIOPHYCEAE) FROM THE MEDITERRANEAN SEA, WITH THE DESCRIPTION OF TWO NEW SPECIES:CHRYSOCHROMULINA LANCEOLATASP. NOV. ANDC. PSEUDOLANCEOLATASP. NOV.1

Puigserver, M.; Chrétiennot‐Dinet, Marie‐Josèphe; Nézan, Élisabeth

doi:10.1046/j.1529-8817.2003.02120.x

Cited by 14 publications

(11 citation statements)

References 30 publications

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“…The center of the scales has a cruciform structure surrounded by an open ring with radiate ribs extending out of the central ring to the rim and crossed by spiraling ribs. Our specimens are smaller than those reported for the type species, but our scale dimensions were similar (Eikrem 1996, Puigserver et al 2003.…”

Section: Chrysochromulina Throndsenii Eikrem (Figures 4 31 32)mentioning

confidence: 41%

“…The preponderance of haptophytes in oligotrophic waters may be explained by their small cell size and ability to feed phagotrophically (Jones et al 1993, Hansen and Hjorth 2002, Lessard et al 2005, or, in the case of the genus Phaeocystis Lagerheim, by its ability to form gel-like colonies (Schoemann et al 2005). Many haptophyte species have been reported from a wide latitudinal range and, therefore, may be regarded as cosmopolitan (Estep et al 1984, Birkhead and Pienaar 1995a, Jensen 1998, Eikrem and Edvardsen 1999, Eikrem and Throndsen 1999, Puigserver et al 2003, LeRoi and Hallegraeff 2004, Hu et al 2005, Nakayama et al 2005.…”

Section: Introductionmentioning

confidence: 96%

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Haptophytes of the Nervión River estuary, northern Spain

Seoane

Eikrem²,

Arluzea³

et al. 2009

Botm

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The meso-macrotidal Nervió n River estuary in northern Spain was sampled monthly from March to September 2002 and 2003 to study species composition and abundance of haptophytes in the phytoplankton. From natural samples and uni-algal cultures, 17 haptophyte species were identified using light and electron microscopy. The species were found across a wide range of temperatures and salinities. The most frequently occurring haptophytes in the estuary were species of the genus Chrysochromulina; however, Isochrysis galbana reached highest abundances. Chrysochromulina lanceolata and Phaeocystis globosa were occasionally present at high abundances. Another bloom-forming species, Prymnesium parvum, was recorded only once. Of the genera identified, eight species belonged to Chrysochromulina, two to Prymnesium and the rest of the genera were represented by one species only. The majority of the species were recorded for the first time in the Cantabrian Sea and one of them for the first time in the Atlantic Ocean.

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Section: Chrysochromulina Throndsenii Eikrem (Figures 4 31 32)mentioning

confidence: 41%

Section: Introductionmentioning

confidence: 96%

Haptophytes of the Nervión River estuary, northern Spain

Seoane

Eikrem²,

Arluzea³

et al. 2009

Botm

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show abstract

“…Haptophytes in the Mediterranean Sea are represented by different species, mostly belonging to the genus Phaeocystis, Prymnesium and Chrysochromulina (for example, Zingone et al, 1999;Puigserver et al, 2003;Vila and Masó, 2005). Although the probes we used were not specific enough to determine if species shifts occurred during the study period, some variations in the mean cell size of haptophytes were observed along the year: a higher proportion of cells 45 mm was observed in December and smaller cells were found at the end of winter.…”

Section: Pico-and Nanophytoplankton Compositionmentioning

confidence: 98%

Mixotrophic haptophytes are key bacterial grazers in oligotrophic coastal waters

et al. 2013

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Grazing rate estimates indicate that approximately half of the bacterivory in oligotrophic oceans is due to mixotrophic flagellates (MFs). However, most estimations have considered algae as a single group. Here we aimed at opening the black-box of the phytoflagellates (PFs) o20 lm. Haptophytes, chlorophytes, cryptophytes and pigmented dinoflagellates were identified using fluorescent in situ hybridization or by standard 4 0 ,6-diamidino-2-phenylindole staining. Their fluctuations in abundance, cell size, biomass and bacterivory rates were measured through an annual cycle in an oligotrophic coastal system. On average, we were able to assign to these groups: 37% of the total pico-PFs and 65% of the nano-PFs composition. Chlorophytes were mostly picoplanktonic and they never ingested fluorescently labeled bacteria. About 50% of the PF o20 lm biomass was represented by mixotrophic algae. Pigmented dinoflagellates were the least abundant group with little impact on bacterioplankton. Cryptophytes were quantitatively important during the coldest periods and explained about 4% of total bacterivory. Haptophytes were the most important mixotrophic group: (i) they were mostly represented by cells 3-5 lm in size present year-round; (ii) cell-specific grazing rates were comparable to those of other bacterivorous non-photosynthetic organisms, regardless of the in situ nutrient availability conditions; (iii) these organisms could acquire a significant portion of their carbon by ingesting bacteria; and (iv) haptophytes explained on average 40% of the bacterivory exerted by MFs and were responsible for 9-27% of total bacterivory at this site. Our results, when considered alongside the widespread distribution of haptophytes in the ocean, indicate that they have a key role as bacterivores in marine ecosystems.

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“…Besides this species, haptophytes of the genera Chrysochromulina were found in concentrations of about 4 · 10 5 cells l )1 , being probably underestimated, thus contributing to a certain extent to the Chl a content of the water. More important appears to be the contribution of Chrysochromulina lanceolata, which is one of the largest species in the genus, with between 21 and 38 lm length (Puigserver et al, 2003). In this study, a peak of 3.2 · 10 5 cells l )1 was registered in August at the seaward end, when 0.1694 lg l )1 of 19¢hex were measured.…”

Section: Phytoplankton Assemblages At the Outer Estuarymentioning

confidence: 99%

Phytoplankton Assemblages and Their Dominant Pigments in the Nervion River Estuary

et al. 2005

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In the Nervion River estuary surface samples were taken from March to September 2003 at six sites covering most of the salinity range with the aim to know the biomass and taxonomic composition of phytoplankton assemblages in the different segments. Nine groups of algae including cyanobacteria, diatoms, dinoflagellates, chlorophytes, prasinophytes, euglenophytes, chrysophytes, haptophytes, raphidophytes and cryptophytes were identified by means of a combination of pigment analysis by highperformance liquid chromatography (HPLC) and microscopic observations of live and preserved cells. Diatoms, chlorophytes and cryptophytes were the most abundant algae in terms of cells number, whereas fucoxanthin, peridinin, chlorophyll b (Chl b) and alloxanthin were the most abundant auxiliary pigments. Based on multiple regression analysis, in the outer estuary (stations 0, 1, 2 and 3) about 93% of the chlorophyll a (Chl a) could be explained by algae containing fucoxanthin and by algae containing Chl b, whereas in the rest of the estuary most of the Chl a (about 98%) was accounted for by fucoxanthin, Chl b and alloxanthin containing algae. The study period coincided with that of most active phytoplankton growth in the estuary and fucoxanthin was by far the dominant among those signature pigments. Several diatoms, chrysophytes, haptophytes and raphydophytes were responsible for fucoxanthin among identified species. Besides, dinoflagellates with a pigment pattern corresponding to chrysophytes and type 4 haptophytes were identified among fucoxanthin-bearing algae. Cryptophytes were the most abundant species among those containing alloxanthin. The maximum of Chl b registered at the seaward end in April coincided with a bloom of the prasinophytes Cymbomonas tetramitiformis, whereas the Chl b maxima in late spring and summer were accounted for by prasinophytes in the middle and outer estuary and by several species of chlorophytes in the middle and inner estuary. Other Chl b containing algae were euglenophytes and the dinoflagellate Peridinium chlorophorum. Dinoflagellates constituted generally a minor component of the phytoplankton.

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SOME PRYMNESIACEAE (HAPTOPHYTA, PRYMNESIOPHYCEAE) FROM THE MEDITERRANEAN SEA, WITH THE DESCRIPTION OF TWO NEW SPECIES:CHRYSOCHROMULINA LANCEOLATASP. NOV. ANDC. PSEUDOLANCEOLATASP. NOV.¹

Cited by 14 publications

References 30 publications

Haptophytes of the Nervión River estuary, northern Spain

Haptophytes of the Nervión River estuary, northern Spain

Mixotrophic haptophytes are key bacterial grazers in oligotrophic coastal waters

Phytoplankton Assemblages and Their Dominant Pigments in the Nervion River Estuary

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