Seasonal and intratidal distribution of Dinophysis spp. in a Chilean fjord

Díaz, Patricio A.; Molinet, Carlos; Cáceres, Mario; Valle‐Levinson, Arnoldo

doi:10.1016/j.hal.2010.09.001

Cited by 43 publications

(37 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This study provides an important contribution to current knowledge on the genetic diversity of A. fundyense (former A. catenella) in the Southern Austral Ecosystem of Chile. The genetic information obtained directly from environmental samples offers a more realistic ecological vision of this dinoflagellate, considering the dynamic oceanographic conditions described for the south of Chile, (Sievers 2008, Quiroga et al 2009, Diaz et al 2011, Daneri et al 2012. Finally, this proposed method can serve as a complementary tool to current monitoring programs of HABs caused by A. fundyense (formerly A. catenella) and can contribute to the understanding of the molecular ecology of this dinoflagellate.…”

Section: Discussionmentioning

confidence: 99%

High genetic variability of Alexandrium catenella directly detected in environmental samples from the Southern Austral Ecosystem of Chile

Cruzat

Muñoz

González-Saldía

et al. 2018

Marine Pollution Bulletin

View full text Add to dashboard Cite

Chilean waters are often affected by Alexandrium catenella, one of the leading organisms behind Harmful Algae Blooms (HABs). Genetic variability for this species are commonly carried out from cultured samples, approach that may not accurately quantify genetic variability of this organism in the water column. In this study, genetic variability of A. catenella was determined by sequencing the rDNA region, in water samples from the Canal Puyuhuapi (South Austral Ecosystem of Chile). A. catenella was detected in 8,8% of samples analysed. All sequences obtained were A. catenella (Tamara complex group I), with three highly frequent haplotypes (34%), and twenty new haplotypes. These haplotypes increase the genetic variability from 2.8% to 3.14% in this area. Through this new method, genetic determination of A. catenella can accurately be monitored and ecological studies of this species can be implemented.

show abstract

Section: Discussionmentioning

confidence: 99%

High genetic variability of Alexandrium catenella directly detected in environmental samples from the Southern Austral Ecosystem of Chile

Cruzat

Muñoz

González-Saldía

et al. 2018

Marine Pollution Bulletin

View full text Add to dashboard Cite

show abstract

“…Iwasaki (1986) suggested that patches of D. fortii off the Ibaraki prefecture (east Honshu, Japan) were formed by both cell division and physical accumulation, and showed maximum cell numbers occurred in the oceanic front between the Oyashio cold water and the Kuroshio warm water currents. In Brittany (France), Dinophysis (D. acuminata) blooms appeared confined by river plumes (Marcaillou et al, 2001;Velo-Suá rez et al, 2010), and in or above the pycnocline in areas with a strong salinity gradient such as Thermaikos Bay, Greece (Koukaras and Nikolaidis, 2004) and Chilean (Díaz et al, 2011) and Swedish fjords (Lindahl et al, 2007).…”

Section: Growth Maintenance and Diurnal Vertical Migrationmentioning

confidence: 99%

Harmful Dinophysis species: A review

et al. 2012

View full text Add to dashboard Cite

“…Salinitas rendah merupakan indikator keberadaan jenis tersebut. Menurut Díaz et al (2011), Dinophysis sp. sangat menyukai suhu tinggi dan salinitas rendah karena salinitas dapat memengaruhi berat jenis laut dan tekanan osmotik sehingga Dinophysis sp.…”

Section: Pembahasanunclassified

Spatial Distribution of Planktonic Dinoflagellate in Makassar Waters, South Sulawesi

Mujib

Damar

Wardiatno

2016

J. Ilmu dan Teknologi Kelautan Tropis

View full text Add to dashboard Cite

The objectives of this study were to determine the harmful species of dinoflagellates, to determine the concentration of nutriens in surface waters, and to analyze factors affecting the ecological aspects of the harmful dinoflagellates. The results showed that there were 7 genus of dinoflagellates found in this study i.e., Ceratium spp., Gymnodinium sp., Dinophysis sp., Gonyaulax sp., Noctiluca sp., Protoperi-dinium spp., and Peridinium sp. Protoperidinium spp. and Ceratium spp. were the predominant species, with their abundance ranged of 9-659 cells/L and 6-556 cells/L, respectively. In temporal scale, values of DO and water light penetration were not significantly different (α>0.05), while for the parameter of nutriens, salinity, and abundance were significantly different (α<0.05). Total abundance of dinoflagellates was significantly correlated with nitrate, nitrite, ammonia, phosphate, salinity, and DO. Harmful dinoflagellate species such as Dinophysis sp. (DSP), Gymnodinium spp. (NSP and PSP), Noctiluca sp. (anaerobic), and Gonyaulax sp. (anaerobic) were observed in the study area. The high concentration of ammonia (>1 mg/L) in the waters of Losari beach also indicated that the area was affected by anthropogenic activities. Minimizing nutrient inputs from the land was becoming the most priority measure to be done to avoid such effects related to dinoflagellate harmful algae bloms.Keywords: anthropogenic, dinoflagellates, harmful species, Makassar, nutrients.

show abstract

Seasonal and intratidal distribution of Dinophysis spp. in a Chilean fjord

Cited by 43 publications

References 23 publications

High genetic variability of Alexandrium catenella directly detected in environmental samples from the Southern Austral Ecosystem of Chile

High genetic variability of Alexandrium catenella directly detected in environmental samples from the Southern Austral Ecosystem of Chile

Harmful Dinophysis species: A review

Spatial Distribution of Planktonic Dinoflagellate in Makassar Waters, South Sulawesi

Contact Info

Product

Resources

About