The Abundance of Heterotrophic Protists Associated with Intertidal Seaweeds

Armstrong, Evelyn; Rogerson, Andrew; Leftley, John W.

doi:10.1006/ecss.1999.0577

Cited by 61 publications

(47 citation statements)

References 26 publications

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“…The hydrocarbon-degrading bacteria are cosmopolitan, and seaweed offers a suitable place for bacterial establishment (Atlas 1995, Armstrong et al 2000. Seaweeds offer a large surface for the settlement of bacteria, oxygen and dissolved organic matter (Armstrong et al 2000, Sigee 2005.…”

Section: Discussionmentioning

confidence: 99%

“…Seaweeds offer a large surface for the settlement of bacteria, oxygen and dissolved organic matter (Armstrong et al 2000, Sigee 2005. On the other hand, the bacteria consume the organic matter, releasing carbon, nitrogen, and phosphorus and provide defense against pollutants, such as oil and aromatic compounds, and epiphytic organisms (Bell et al 1974, Atlas 1995, Sigee 2005.…”

Section: Discussionmentioning

confidence: 99%

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Protists and bacteria interactions in the presence of oil

Bitencourt

Silva

Silva‐Neto

et al. 2014

An. Acad. Bras. Ciênc.

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Little is known about the role of protists and bacteria interactions during hydrocarbon biodegradation. This work focused on the effect of oil on protists from three different locations in Guanabara Bay and bacteria from Caulerpa racemosa (B Cr ), Dictyota menstrualis (B Dm ) and Laurencia obtusa (B Lo ) during a 96 h bioassay. Cryptomonadida (site 1, 2 and 3), Scuticociliatida (site 2) and Euplotes sp.1 and Euplotes sp.2 (site 3) appeared after incubation. The highest biomass observed in the controls was as follows: protist site 3 (6.0 µgC.cm -3

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Protists and bacteria interactions in the presence of oil

Bitencourt

Silva

Silva‐Neto

et al. 2014

An. Acad. Bras. Ciênc.

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“…Although the microorganisms observed and identified on the surfaces of diverse algae include yeasts, fungi, and protists (Armstrong et al 2000;Cundell et al 1977;Genilloud et al 1994;Schaumann and Weide 1995;Uchida and Murata 2004), most available reports on alga-associated microbial populations concern bacteria. Therefore this review focuses mainly on alga-associated bacterial communities.…”

Section: Diversity Of Microorganisms On Algaementioning

confidence: 99%

“…The density of bacteria on algal surfaces has been estimated by cell counts under the microscope (Cundell et al 1977), by culture-based methods (Mazure and Field 1980), and by molecular approaches (Armstrong et al 2000). Mean densities between 10 6 and 10 9 bacteria/cm 2 algal surface have been recorded.…”

Section: Diversity Of Microorganisms On Algaementioning

confidence: 99%

Microorganisms living on macroalgae: diversity, interactions, and biotechnological applications

Martin

Portetelle

Michel

et al. 2014

Appl Microbiol Biotechnol

145

107

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Marine microorganisms play key roles in every marine ecological process, hence the growing interest in studying their populations and functions. Microbial communities on algae remain underexplored, however, despite their huge biodiversity and the fact that they differ markedly from those living freely in seawater. The study of this microbiota and of its relationships with algal hosts should provide crucial information for ecological investigations on algae and aquatic ecosystems. Furthermore, because these microorganisms interact with algae in multiple, complex ways, they constitute an interesting source of novel bioactive compounds with biotechnological potential, such as dehalogenases, antimicrobials and alga-specific polysaccharidases (e.g. agarases, carrageenases, alginate lyases). Here, to demonstrate the huge potential of alga-associated organisms and their metabolites in developing future biotechnological applications, we first describe the immense diversity and density of these microbial biofilms. We further describe their complex interactions with algae, leading to the production of specific bioactive compounds and hydrolytic enzymes of biotechnological interest.We end with a glance at their potential use in medical and industrial applications.

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“…Considering the high production of carbon in the kelp forest, much of which is channelled through the microbial food web by bacteria utilising DOM and POM from ageing plants and debris (Newell & Lucas 1981, Mann 2000, one should expect protists to be abundant in this system. A few studies have assessed the abundance of ciliates in seaweed communities (Armstrong et al 1999, Hillebrand et al 2002, but the contribution of different taxonomic groups as well as their role in the food web remains unexplored. However, the studies performed reveal a range of ciliates with different feeding modes and food preferences (Armstrong et al 1999, Hillebrand et al 2002.…”

Section: Introductionmentioning

confidence: 99%

Podite carrying ciliates dominate the benthic ciliate community in the kelp forest

Gismervik

2004

Aquat. Microb. Ecol.

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The ciliate fauna on the kelp Laminaria hyperborea and 5 of its epiphytes was sampled in April and August, off the north-west coast of Norway. The lamina of the kelp carried few (old lamina) or no ciliates (new lamina), while podite carrying cyrtophorids of the order Dysteriida prevailed in April on the epiphytes. The highest number of ciliates was found on Ectocarpus sp. (total ciliate number of 20 352 ± 5040 ciliates g -1 fresh weight, FW), with species of the genus Dysteria (8008 ± 1928 g -1 FW) and 1 species of the genus Hartmannula (Hartmannula angustipilosa; 8767 ± 5202 g -1 FW) being dominant. In August, the abundance of ciliates was greatly reduced on all epiphytes, although more taxa were observed. Aspidisca spp. (4829 ± 987 g -1 FW) dominated total numbers (6080 ± 1118 ciliates g -1 FW) on Ectocarpus sp. The infraciliature of 7 species from the family Dysteridae, including Agnathodysteria littoralis, Trochilia sigmoides and Dysteria monostyla, is described. The dysterids and H. angustipilosa carry a flexible podite by which they attach to the surface. The podite may be the key to success in this wave-and current-exposed environment.

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The Abundance of Heterotrophic Protists Associated with Intertidal Seaweeds

Cited by 61 publications

References 26 publications

Protists and bacteria interactions in the presence of oil

Protists and bacteria interactions in the presence of oil

Microorganisms living on macroalgae: diversity, interactions, and biotechnological applications

Podite carrying ciliates dominate the benthic ciliate community in the kelp forest

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