Spatial distribution of symbiont-bearing dinoflagellates in the Indian Ocean in relation to oceanographic regimes

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

Spatial distribution of symbiont-bearing dinoflagellates in the Indian Ocean in relation to oceanographic regimes. / Tarangkoon, Woraporn; Hansen, Gert; Hansen, Per Juel.

In: Aquatic Microbial Ecology, Vol. 58, No. 2, 2010, p. 197-213.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Tarangkoon, W, Hansen, G & Hansen, PJ 2010, 'Spatial distribution of symbiont-bearing dinoflagellates in the Indian Ocean in relation to oceanographic regimes', Aquatic Microbial Ecology, vol. 58, no. 2, pp. 197-213. https://doi.org/10.3354/ame01356

APA

Tarangkoon, W., Hansen, G., & Hansen, P. J. (2010). Spatial distribution of symbiont-bearing dinoflagellates in the Indian Ocean in relation to oceanographic regimes. Aquatic Microbial Ecology, 58(2), 197-213. https://doi.org/10.3354/ame01356

Vancouver

Tarangkoon W, Hansen G, Hansen PJ. Spatial distribution of symbiont-bearing dinoflagellates in the Indian Ocean in relation to oceanographic regimes. Aquatic Microbial Ecology. 2010;58(2):197-213. https://doi.org/10.3354/ame01356

Author

Tarangkoon, Woraporn ; Hansen, Gert ; Hansen, Per Juel. / Spatial distribution of symbiont-bearing dinoflagellates in the Indian Ocean in relation to oceanographic regimes. In: Aquatic Microbial Ecology. 2010 ; Vol. 58, No. 2. pp. 197-213.

Bibtex

@article{e347282025f911df8ed1000ea68e967b,
title = "Spatial distribution of symbiont-bearing dinoflagellates in the Indian Ocean in relation to oceanographic regimes",
abstract = "The spatial distribution of symbiont-bearing dinoflagellates was investigated during a cruise from Cape Town, South Africa to Broome, Australia. Endo- and ectosymbionts were only found in the order Dinophysiales. The genera Ornithocercus, Histioneis, Parahistioneis and Citharistes had cyanobacteria as ectosymbionts, while the genera Amphisolenia and Triposolenia contained both intact cyanobacterial and eukaryotic endosymbionts. The symbiont-bearing dinoflagellates were mainly found in the upper 100 m of the water column. Their distribution was restricted to water temperatures exceeding 16.5°C, and the highest species diversity and cell concentrations were found at temperatures around 20 to 30°C. The symbiont-bearing dinoflagellates were always associated with water masses with low nutrient (N-limited) and chl a concentrations. Special attention was given to the ectosymbiont-bearing dinoflagellates. Under light microscopy, some of the food vacuoles of Ornithocercus spp. resembled ectosymbionts in size, shape and colour. Transmission electron microscopy of O. magnificus and O. quadratus revealed the presence of a peduncle and many rhabdosomes; both may serve in prey capture. Also, numerous food vacuoles were present, but their content was generally too degraded for a proper identification of prey type. However, occasionally remnants of eukaryotes were observed, indicating that Ornithocercus spp. may feed on ciliates. Thus, our data suggest that the ectosymbiont-bearing dinoflagellates use a multi-resource strategy (photosynthesis and phagotrophy) to cope with a low-nutrient environment.",
author = "Woraporn Tarangkoon and Gert Hansen and Hansen, {Per Juel}",
note = "KEY WORDS: Symbionts · Ornithocercus · Amphisolenia · Histioneis · Dinophysoids · Dinoflagellates · Indian Ocean · Galathea 3",
year = "2010",
doi = "10.3354/ame01356",
language = "English",
volume = "58",
pages = "197--213",
journal = "Aquatic Microbial Ecology",
issn = "0948-3055",
publisher = "Inter research",
number = "2",

}

RIS

TY - JOUR

T1 - Spatial distribution of symbiont-bearing dinoflagellates in the Indian Ocean in relation to oceanographic regimes

AU - Tarangkoon, Woraporn

AU - Hansen, Gert

AU - Hansen, Per Juel

N1 - KEY WORDS: Symbionts · Ornithocercus · Amphisolenia · Histioneis · Dinophysoids · Dinoflagellates · Indian Ocean · Galathea 3

PY - 2010

Y1 - 2010

N2 - The spatial distribution of symbiont-bearing dinoflagellates was investigated during a cruise from Cape Town, South Africa to Broome, Australia. Endo- and ectosymbionts were only found in the order Dinophysiales. The genera Ornithocercus, Histioneis, Parahistioneis and Citharistes had cyanobacteria as ectosymbionts, while the genera Amphisolenia and Triposolenia contained both intact cyanobacterial and eukaryotic endosymbionts. The symbiont-bearing dinoflagellates were mainly found in the upper 100 m of the water column. Their distribution was restricted to water temperatures exceeding 16.5°C, and the highest species diversity and cell concentrations were found at temperatures around 20 to 30°C. The symbiont-bearing dinoflagellates were always associated with water masses with low nutrient (N-limited) and chl a concentrations. Special attention was given to the ectosymbiont-bearing dinoflagellates. Under light microscopy, some of the food vacuoles of Ornithocercus spp. resembled ectosymbionts in size, shape and colour. Transmission electron microscopy of O. magnificus and O. quadratus revealed the presence of a peduncle and many rhabdosomes; both may serve in prey capture. Also, numerous food vacuoles were present, but their content was generally too degraded for a proper identification of prey type. However, occasionally remnants of eukaryotes were observed, indicating that Ornithocercus spp. may feed on ciliates. Thus, our data suggest that the ectosymbiont-bearing dinoflagellates use a multi-resource strategy (photosynthesis and phagotrophy) to cope with a low-nutrient environment.

AB - The spatial distribution of symbiont-bearing dinoflagellates was investigated during a cruise from Cape Town, South Africa to Broome, Australia. Endo- and ectosymbionts were only found in the order Dinophysiales. The genera Ornithocercus, Histioneis, Parahistioneis and Citharistes had cyanobacteria as ectosymbionts, while the genera Amphisolenia and Triposolenia contained both intact cyanobacterial and eukaryotic endosymbionts. The symbiont-bearing dinoflagellates were mainly found in the upper 100 m of the water column. Their distribution was restricted to water temperatures exceeding 16.5°C, and the highest species diversity and cell concentrations were found at temperatures around 20 to 30°C. The symbiont-bearing dinoflagellates were always associated with water masses with low nutrient (N-limited) and chl a concentrations. Special attention was given to the ectosymbiont-bearing dinoflagellates. Under light microscopy, some of the food vacuoles of Ornithocercus spp. resembled ectosymbionts in size, shape and colour. Transmission electron microscopy of O. magnificus and O. quadratus revealed the presence of a peduncle and many rhabdosomes; both may serve in prey capture. Also, numerous food vacuoles were present, but their content was generally too degraded for a proper identification of prey type. However, occasionally remnants of eukaryotes were observed, indicating that Ornithocercus spp. may feed on ciliates. Thus, our data suggest that the ectosymbiont-bearing dinoflagellates use a multi-resource strategy (photosynthesis and phagotrophy) to cope with a low-nutrient environment.

U2 - 10.3354/ame01356

DO - 10.3354/ame01356

M3 - Journal article

VL - 58

SP - 197

EP - 213

JO - Aquatic Microbial Ecology

JF - Aquatic Microbial Ecology

SN - 0948-3055

IS - 2

ER -

ID: 18338342