Long-term studies on Noctiluca scintillans in the German Bight population dynamics and red tide phenomena 1968–1988

Uhlig, G.; Sahling, G.

doi:10.1016/0077-7579(90)90012-6

Cited by 99 publications

(59 citation statements)

References 7 publications

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“…exact duration of occurrence, abundance, distribution) differed depending on the year, overall variation patterns were essentially similar during all five years, and these were similar to those reported for other temperate coastal waters (e.g. Uhlig & Sahling 1990, Pithakpol et al 2000a, b, Tada et al 2004, Miyaguchi et al 2006). For Noctiluca, such seasonal variations occur commonly in temperate seas, being explainable by local abiotic/biotic variables (i.e.…”

Section: Seasonal Variations In Abundancesupporting

confidence: 73%

“…2, 4, 5), as similarly found in other waters (e.g. Uhlig & Sahling 1990, Huang & Qi 1997, Schoemann et al 1998, Tada et al 2004, Miyaguchi et al 2006. Laboratory-culture experiments have shown that growth and production rates of Noctiluca are temperature-and food-dependent: Noctiluca has enhanced growth rates at temperatures ranging from 5 to 21-23 o C and under higher prey (phytoplankton) concentrations, whereas it could not grow at temperatures higher than 26- 27 o C (Lee & Hirayama 1992, Buskey 1995, Kiørboe & Titelman 1998, Nakamura 1998a, b, Pithakpol et al 2000a, Tada et al 2004).…”

Section: Seasonal Variations In Abundancesupporting

confidence: 68%

“…Seasonal, year-on-year and/or spatial variations in abundance of Noctiluca have been extensively studied in temperate and subtropical estuarine and coastal waters (e.g. Kuroda & Saga 1978, Uhlig & Sahling 1990, Huang & Qi 1997, Tada et al 2004, Miyaguchi et al 2006. These studies found distinct seasonal variations with considerable peaks (i.e.…”

Section: Introductionmentioning

confidence: 99%

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Seasonal variability of the red tide-forming heterotrophic dinoflagellate Noctiluca scintillans in the neritic area of Sagami Bay, Japan: its role in the nutrient-environment and aquatic ecosystem

Ara

Nakamura

Takahashi

et al. 2013

Plankton Benthos Res

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Abstract:The role of the heterotrophic dinoflagellate Noctiluca scintillans in affecting the nutrient-environment and aquatic ecosystem was investigated in the neritic area of Sagami Bay, Kanagawa, Japan, from January 2002 to December 2006, based on abundance, intracellular nutrient content, excretion rate and response of phytoplankton (diatoms) to enrichment of nutrients extracted from N. scintillans cells. Seasonal variations in abundance and vertical distribution of N. scintillans were significantly related to the physical structure of the water column, water temperature, chlorophyll a and primary productivity. Intracellular nutrient contents, except for Si(OH) 4 -Si, revealed clear seasonal fluctuations, which were significantly correlated to cell size variations. Thalassiosira rotula increased to higher cell abundances at higher concentrations of nutrients, which were extracted from N. scintillans cells. NH 4 + -N and PO 4 3--P excretion rates were much higher during the first 1-3 h, and decreased rapidly with time. Daily NH 4 + -N and PO 4 3--P supply by N. scintillans excretion was estimated to be on average 34.8% and 55.3%, especially 50.6-85.4% and 80.5-135.8% in April-July (monthly mean), of the daily N and P requirement for primary production, respectively. The large amounts of nutrients regenerated and released by N. scintillans excretion can increase the N and P concentrations in ambient seawater, especially in the upper layer in spring-summer, and consequently affect phytoplankton (diatom) abundance. These may exacerbate eutrophication in these waters by a mutually supportive relationship between phytoplankton and N. scintillans: bottom-up control (phytoplankton-N. scintillans) and nutrient supply by N. scintillans to phytoplankton through excretion.

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Section: Seasonal Variations In Abundancesupporting

confidence: 73%

Section: Seasonal Variations In Abundancesupporting

confidence: 68%

Section: Introductionmentioning

confidence: 99%

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Seasonal variability of the red tide-forming heterotrophic dinoflagellate Noctiluca scintillans in the neritic area of Sagami Bay, Japan: its role in the nutrient-environment and aquatic ecosystem

Ara

Nakamura

Takahashi

et al. 2013

Plankton Benthos Res

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“…Once the experiment was set up, 2-mL samples of G. catenatum culture were used for counting at 0, 24, 48, 72, and 120 h. One 100-mL sample was fixed with lugol to calculate the proportion of N. scintillans with and without G. catenatum in their vacuoles. These concentrations were based on cell densities of previous N. scintillans (Uhlig and Sahling 1990, Kirchner et al 1996, Cortés-Altamirano et al 2007 and G. catenatum blooms (Band-Schmidt et al 2010, Hallegraeff et al 2012, Quijano-Scheggia et al 2012.…”

Section: Noctiluca Scintillansmentioning

confidence: 99%

Grazing of the dinoflagellate Noctiluca scintillans on the paralytic toxin-producing dinoflagellate Gymnodinium catenatum: Does grazing eliminate cells during a bloom?

et al. 2013

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ABSTRACT. Temperature and nutrient concentrations were measured during a mixed bloom of Noctiluca scintillans and Gymnodinium catenatum in La Paz Bay, Gulf of California. Under laboratory conditions, we offered three concentrations of G. catenatum (312, 625, or 1015 cells mL -1 ) to 0.53 N. scintillans cells mL -1 to study predation rates. Experiments were carried out with 750 mL of culture during a fiveday period. Sea surface temperature clearly showed a transitional period from colder to warmer water during the bloom. RESUMEN. Se monitoreó la temperatura y los nutrientes durante una proliferación de Noctiluca scintillans y Gymnodinium catenatum en la bahía de La Paz, golfo de California. También, bajo condiciones de laboratorio, se mezclaron diferentes concentraciones de G. catenatum (312, 625, o 1015 células mL -1 ) con 0.53 células de N. scintillans mL -1 a fin de evaluar las tasas de pastoreo. La experimentación se llevó a cabo en 750 mL de cultivo durante un periodo de cinco días. La temperatura superficial mostró claramente un periodo de transición de agua fría a caliente durante la proliferación. Las observaciones de campo y las de laboratorio mostraron que N. scintillans se alimentaba de G. catenatum. En el laboratorio, más del 70% de N. scintillans contenía células de G. catenatum en sus vacuolas. La tasas de ingestión variaron ampliamente; los valores más altos variaron de 30 a 40 células de G. catenatum h -1 en cada célula de N. scintillans. No se observó una relación entre las diferentes concentraciones de G. catenatum ofrecidas y la tasa de ingestión. Al final del experimento se observaron tasas de ingestión bajas de 1 a 3 células de G. catenatum h -1 en cada célula de N. scintillans. La concentración de N. scintillans se duplicó aproximadamente cada 48 h; sin embargo, observamos numerosos trofontes saliendo de su cubierta externa, lo cual sugiere que existió daño celular. Estos datos indican que N. scintillans ingiere a G. catenatum pero la presa parece dañar al depredador en un corto plazo.Palabras clave: Gymnodinium catenatum, Noctiluca scintillans, pastoreo, biocontrol, bahía de La Paz.

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“…Extensive long-term investigations on its ecology have been conducted by Uhlig & Sahling (1982, 1990 during the past decades, dealing with population dynamics, circadian rhythms, distributional and red*tide phenomena of Noctiluca in the German Bight (North Sea).…”

Section: Introductionmentioning

confidence: 99%

Anisogamy in the dinoflagellateNoctiluca?

Schnepf

Drebes

1993

Helgolander Meeresunters

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We disagree on the generally accepted elements of the description of the sexual life cycle of Noctiluca as presented by Zingmark (1970a), namely that (1) the swarmers of Noctiluca are isogametes, that (2) the zygote develops directly into a large trophont, and we question that (3) Nocfiluca is a diplont with meiosis occurring during the formation of the swarmers. We observed a highly distinct attraction between swarmers (microgametes?) and certain large cells (macrogametes?) which resemble adult trophonts in shape and size. 1Voctiluca thus appears to be anisogamous, and the zygote does not need to grow to become a large trophont.

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Long-term studies on Noctiluca scintillans in the German Bight population dynamics and red tide phenomena 1968–1988

Cited by 99 publications

References 7 publications

Seasonal variability of the red tide-forming heterotrophic dinoflagellate Noctiluca scintillans in the neritic area of Sagami Bay, Japan: its role in the nutrient-environment and aquatic ecosystem

Seasonal variability of the red tide-forming heterotrophic dinoflagellate Noctiluca scintillans in the neritic area of Sagami Bay, Japan: its role in the nutrient-environment and aquatic ecosystem

Grazing of the dinoflagellate Noctiluca scintillans on the paralytic toxin-producing dinoflagellate Gymnodinium catenatum: Does grazing eliminate cells during a bloom?

Anisogamy in the dinoflagellateNoctiluca?

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