Infection by Amoebophrya spp. parasitoids of dinoflagellates in a tropical marine coastal area

Salomon, Paulo S.; Granéli, Edna; Neves, Maria Helena Campos Baeta; Rodriguez, Eliane Gonzalez

doi:10.3354/ame01293

Cited by 30 publications

(24 citation statements)

References 27 publications

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“…Toxicity of the host species was also shown to not be a factor in the infection of natural populations of Dinophysis by Amoebophrya sp. (Salomon et al, 2003a;Salomon and Edna, 2009).…”

Section: Parasitism and Bloom Terminationmentioning

confidence: 98%

Karlodinium veneficum—The little dinoflagellate with a big bite

Place¹,

Bowers²,

Bachvaroff³

et al. 2012

Harmful Algae

148

137

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“…Toxicity of the host species was also shown to not be a factor in the infection of natural populations of Dinophysis by Amoebophrya sp. (Salomon et al, 2003a;Salomon and Edna, 2009).…”

Section: Parasitism and Bloom Terminationmentioning

confidence: 98%

Karlodinium veneficum—The little dinoflagellate with a big bite

Place¹,

Bowers²,

Bachvaroff³

et al. 2012

Harmful Algae

148

137

View full text Add to dashboard Cite

“…Estimates based on culture experiments using dinoflagellate hosts suggest that almost half of the host biomass is transformed into dinospores (Salomon et al 2009;Yih and Coats, 2000), the rest being likely rapidly incorporated into the pool of particulate and dissolved organic matter (POM and DOM) and used as substrates by marine bacteria. This process, called the "viral loop" (or viral shunt) for viruses, plays an important role in the microbial loop in the ocean (Wilhelm and Suttle, 1999).…”

Section: Ecological Impactsmentioning

confidence: 99%

Ecological impacts of parasitic chytrids, syndiniales and perkinsids on populations of marine photosynthetic dinoflagellates

Jephcott¹,

Alves‐de‐Souza²,

Gleason³

et al. 2016

Fungal Ecology

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“…In this sense, the prevalences observed in Dinophysis acuminata and Phalacroma rotundata (<10%) were consistent with their low abundances and in accordance with the previous records of Amoebophrya spp. infections of Dinophysis species (Fritz & Nass 1992, Gisselson et al 2002, Salomon et al 2009). However, prevalences were unexpectedly low for Prorocentrum micans, with a maximum of 12% observed on 17 March.…”

Section: Host -Amoebophryidae Dynamicsmentioning

confidence: 99%

“…(20 to 80%) is usually observed during annual dinoflagellate blooms in estuarine systems, where high nutrient concentrations and water mass stability favor the growth of dinoflagellates. However, recent studies in oligotrophic coastal waters of Brazil (Salomon et al 2009) and ultra-oligotrophic waters of the Mediterranean Sea (Siano et al 2011) have reported Amoebophrya spp. infections of dinoflagellates with prevalences up to 7 and 25%, respectively, suggesting that these parasitoids could also be relevant at low host concentrations.…”

Section: Introductionmentioning

confidence: 99%

Infection dynamics of Amoebophryidae parasitoids on harmful dinoflagellates in a southern Chilean fjord dominated by diatoms

Alves‐de‐Souza¹,

Varela²,

Iriarte³

et al. 2012

Aquat. Microb. Ecol.

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Parasitoids belonging to Amoebophryidae (Marine ALVeolate Group II or MALV II) infecting dinoflagellates were investigated in Reloncaví Fjord (southern Chile) in the austral summer 2009. Of the 12 dinoflagellate species recorded during monthly sampling, Prorocentrum micans, Dinophysis acuminata, and Phalacroma rotundata were infected by Amoebophrya spp. To assess parasitoid control of host populations, the short-term dynamics of Amoebophrya spp. were followed for 21 d during a bloom of P. micans. Host mortality induced by Amoebophrya spp. (% hosts killed per day) was estimated by dividing prevalence by the generation time of these parasitoids. Parasitism by Amoebophrya spp. was responsible for ~10% of P. micans mortality between 8 and 17 March. The small subunit rDNA genes of individual parasitoids infecting different host cells were sequenced, and like most environmental sequences retrieved from this ecosystem in January and February, all belonged to the MALV II Clade 4. However, as soon as the P. micans bloom was detected, the MALV II genetic composition changed drastically, with the detection of Clades 1, 4 (a different sub-cluster than before), 5, 6, and 12. Our results suggest that different types of parasitoids belonging to Amoebophryidae likely infect dinoflagellates in Reloncaví Fjord, offering the first demonstration of the presence of important genetic diversity in MALV II inhabiting an ecosystem where dinoflagellate hosts are not the usual dominant phytoplanktonic organisms.

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Infection by Amoebophrya spp. parasitoids of dinoflagellates in a tropical marine coastal area

Cited by 30 publications

References 27 publications

Karlodinium veneficum—The little dinoflagellate with a big bite

Karlodinium veneficum—The little dinoflagellate with a big bite

Ecological impacts of parasitic chytrids, syndiniales and perkinsids on populations of marine photosynthetic dinoflagellates

Infection dynamics of Amoebophryidae parasitoids on harmful dinoflagellates in a southern Chilean fjord dominated by diatoms

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