Coupling planktonic and benthic shifts during a bloom of Alexandrium catenella in southern Chile: Implications for bloom dynamics and recurrence

Díaz, Patricio A.; Molinet, Carlos; Seguel, Mauricio; Díaz, Manuel; Labra, Gissela; Figueroa, Rosa Isabel

doi:10.1016/j.hal.2014.10.001

Cited by 48 publications

(56 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For the Quitralco Estuary (45º46'S, 73º32'W), values of 76 cysts mL -1 were reported in the late summer of 1999 (Lembeye, 2004) and 17 cysts mL -1 in November 2001 (Seguel et al, 2005). For the northern sector of Melinka (43º50'S, 73º55'W), maximums of 50 and 128 cysts mL -1 have been reported in June and July 2009, respectively (Díaz et al, 2014), year that was characterized by an intense blooming of A. catenella in comparison to periods before and after that year . Conversely, the cell density of P. reticulatum cysts (103 cysts mL -1 w.s.)…”

Section: Dinoflagellates Cystsmentioning

confidence: 99%

“…9a). For Quitralco Estuary, 85 cysts mL -1 have been reported in July 2001 (Seguel et al, 2005), 77 cysts mL -1 in Goñi Channel (44º50'S, 74º05'W) in July of 2002 (Seguel & Sfeir, 2010), and 50 cysts mL -1 in August of 2009 and February of 2010 for the northern sector of Melinka (Díaz et al, 2014). Nevertheless, results are low when confronted with those obtained in July (winter) 2010, where P. reticulatum cysts reached values as high as 25971 cysts mL -1 w.s.…”

Section: Dinoflagellates Cystsmentioning

confidence: 99%

“…Although an increased abundance of cysts tends to be associated with the intensity of vegetative cell blooms during the summer period (e.g., Díaz et al, 2014), the survival of these cysts in the sediments also seems to be very variable.…”

Section: Dinoflagellates Cystsmentioning

confidence: 99%

See 2 more Smart Citations

Winter distribution of toxic, potentially toxic phytoplankton, and shellfish toxins in fjords and channels of the Aysen region, Chile

Pizarro

Paz²,

Alarcón

et al. 2018

lajar

View full text Add to dashboard Cite

ABSTRACT. The Aysén region (43°-47ºS) has been prone to intensive summer blooms of toxic microalgae and complex toxin profiles in the shellfish. However, their winter distribution, toxin profile, and resting cysts in sediments are poorly known. Frequently detected toxins are: Paralytic Shellfish Toxins (PST); lipophilic toxins, including Diarrheic Shellfish Toxins (DST), Amnesic Shellfish Toxin or Domoic Acid (DA). During a cruise, carried out in winter 2012, samples were collected at 24 stations for phytoplankton analysis and analysis of toxins in mollusks, and at 5 stations, additional samples were taken for toxin analysis in plankton and resting cysts in sediments. The results confirm the presence of microalgae associated with toxins in winter, and a higher sensitivity of the relative abundance (RA) than the cellular density, as a parameter of distribution of the microalgae. The maximum RA values were level 2 (low), for Alexandrium catenella and Protoceratium reticulatum; level 1 (rare) for Alexandrium ostenfeldii, Dinophysis acuminata and D. acuta; levels 3 (regular) and 4 (abundant) for Pseudo-nitzschia spp. seriata complex and Pseudo-nitzschia spp. delicatissima complex, respectively. Only PST in plankton and yessotoxins in mo llusks were detected, whereas cyst densities of A. catenella and P. reticulatum in sediments were 4 and 103 cysts mL -1 of wet sediment, respectively. The analyzed parameters showed a bigger inter-annual variability during the winter period, as it has been reported for the summer.

show abstract

Section: Dinoflagellates Cystsmentioning

confidence: 99%

Section: Dinoflagellates Cystsmentioning

confidence: 99%

See 1 more Smart Citation

Winter distribution of toxic, potentially toxic phytoplankton, and shellfish toxins in fjords and channels of the Aysen region, Chile

Pizarro

Paz²,

Alarcón

et al. 2018

lajar

View full text Add to dashboard Cite

show abstract

“…In 2005 and 2006, another bloom in the X region occurred at 12 • C . Data suggested that stratification conditions favored dinoflagellates growth and coincided with the presence of PSTs (Díaz et al, 2014).…”

Section: Chilementioning

confidence: 94%

Paralytic Toxin Producing Dinoflagellates in Latin America: Ecology and Physiology

et al. 2019

View full text Add to dashboard Cite

In this review we summarize the current state of knowledge regarding taxonomy, bloom dynamics, toxicity, autoecology, and trophic interactions, of saxitoxin producing dinoflagellates in this region. The dinoflagellates Gymnodinium catenatum, Pyrodinium bahamense and several species of Alexandrium are saxitoxin producers, and have been responsible of paralytic shellfish poisoning in different regions of Latin America, causing intoxications and important fisheries losses. The species distribution differ; most harmful algal blooms of G. catenatum are from the northern region, however this species has also been reported in central and southern regions. Blooms of P. bahamense are mostly reported in North and Central America, while blooms of Alexandrium species are more common in South America, however this genus is widely spread in Latin America. Species and regional differences are contrasted, with the aim to contribute to future guidelines for an international scientific approach for research and monitoring activities that are needed to increase our understanding of paralytic toxin producing dinoflagellates in this region.

show abstract

“…Díaz et al (2014a) observed a very rapid depletion of cysts from the sediments (<3 months), suggesting that resting cyst deposits play a minor role in the recurrence of blooms of PSP-causing Alexandrium catenella along the southern Chilean coast. Furthermore, the intensity of some Alexandrium spp.…”

Section: Life-history Strategies Of Harmful Species In Confined and Smentioning

confidence: 95%

Harmful Algal Blooms in Fjords, Coastal Embayments, and Stratified Systems: Recent Progress and Future Research

Berdalet¹,

Montresor²,

Reguera³

et al. 2017

Oceanog.

View full text Add to dashboard Cite

Coupling planktonic and benthic shifts during a bloom of Alexandrium catenella in southern Chile: Implications for bloom dynamics and recurrence

Cited by 48 publications

References 63 publications

Winter distribution of toxic, potentially toxic phytoplankton, and shellfish toxins in fjords and channels of the Aysen region, Chile

Winter distribution of toxic, potentially toxic phytoplankton, and shellfish toxins in fjords and channels of the Aysen region, Chile

Paralytic Toxin Producing Dinoflagellates in Latin America: Ecology and Physiology

Harmful Algal Blooms in Fjords, Coastal Embayments, and Stratified Systems: Recent Progress and Future Research

Contact Info

Product

Resources

About