Growth rate and toxicity of<i>Prymnesium parvum</i>and<i>Prymnesium patelliferum</i>(haptophyta) in response to changes in salinity, light and temperature

Larsen, Aud; Bryant, Sarah; Båmstedt, Ulf

doi:10.1080/00364827.1998.10413700

Cited by 82 publications

(88 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Other experiments using UTEX-LB2797 revealed a logarithmic growth-salinity relationship in which maximum potential growth rates of P. parvum declined at salinities of 6 psu or lower compared with 15 and 30 psu . Similar findings have been documented for Norwegian and Danish strains of P. parvum (Larsen and Bryant, 1998). Not only were P. parvum growth rates during blooms in Lebanon Pool, Lake Texoma (Oklahoma-Texas) negatively related to temperatures between 7 1C and 16 1C, these blooms were large (up to 200 000 cells per ml) and quite toxic, as indicated by bioassays and large fish kills Zamor et al, 2014).…”

Section: Discussionsupporting

confidence: 83%

The niche of an invasive marine microbe in a subtropical freshwater impoundment

et al. 2014

View full text Add to dashboard Cite

Growing attention in aquatic ecology is focusing on biogeographic patterns in microorganisms and whether these potential patterns can be explained within the framework of general ecology. The long-standing microbiologist’s credo ‘Everything is everywhere, but, the environment selects’ suggests that dispersal is not limiting for microbes, but that the environment is the primary determining factor in microbial community composition. Advances in molecular techniques have provided new evidence that biogeographic patterns exist in microbes and that dispersal limitation may actually have an important role, yet more recent study using extremely deep sequencing predicts that indeed everything is everywhere. Using a long-term field study of the ‘invasive’ marine haptophyte Prymnesium parvum, we characterize the environmental niche of P. parvum in a subtropical impoundment in the southern United States. Our analysis contributes to a growing body of evidence that indicates a primary role for environmental conditions, but not dispersal, in the lake-wide abundances and seasonal bloom patterns in this globally important microbe.

show abstract

Section: Discussionsupporting

confidence: 83%

The niche of an invasive marine microbe in a subtropical freshwater impoundment

et al. 2014

View full text Add to dashboard Cite

show abstract

“…Most Pseudo-nitzschia culture studies focus on P. multiseries with the results extrapolated to other species and strains (Bates 1998). However, broad species and strain differences have been well documented (Gallagher 1980, Elrifi & Turpin 1985, Goldman & Dennett 1985, Holmes et al 1991, Wood & Leatham 1992, Larsen & Bryant 1998, Burkholder et al 2005 and draw into question the validity of making conclusions about microalgal species physiology based on one or a few strains.…”

Section: Introductionmentioning

confidence: 99%

Intra- and interspecies differences in growth and toxicity of Pseudo-nitzschia while using different nitrogen sources

2009

View full text Add to dashboard Cite

Clonal cultures of plankton are widely used in laboratory experiments and have contributed greatly to knowledge of microbial systems. However, many physiological characteristics vary drastically between strains of the same species, calling into question our ability to make ecologically relevant inferences about populations based on studying one or a few strains. This study included nineteen non-axenic strains of three species of the diatom Pseudo-nitzschia isolated primarily from the mid-Atlantic coastal region of the United States.Toxin (domoic acid) production and growth rates were measured in cultures using different nitrogen sources (NH 4 + , NO 3 ⎯ and urea) and growth irradiances. The strains exhibited broad differences in growth rate and toxin content even between strains isolated from the same water sample. The influence of bacteria on toxin production was not investigated. Both P. multiseries clones produced toxin, yet preferentially used different nitrogen sources. Only two out of nine P. calliantha and two out of five P. fraudulenta isolates were toxic and domoic acid content varied by orders of magnitude. All three species had variable intraspecies growth rates on each nitrogen source, but P. fraudulenta strains had the broadest range. Light-limited growth rate and maximum growth rate in P. fraudulenta and P. multiseries varied with species. These findings show the importance of defining intra-and interspecies variability in ecophysiology and toxicity.Ecologically relevant functional diversity in the form of ecotypes or cryptic species appears to be present in the genus Pseudo-nitzschia.

show abstract

“…(2007) reported that P. parvum toxicity was higher in suboptimal salinity conditions for growth. However, the literature is contradictory on the response of P. parvum toxicity towards salinity chan ges; previous studies observed an inverse relation between toxicity and salinity (Shilo & Rosenberger 1960), found maximum toxicity in P. parvum at intermediate salinities and observed toxicity de creases at low or high salinities (Padilla 1970, Hag ström 2006 or found no clear trend (Larsen & Bryant 1998).…”

Section: Introductionmentioning

confidence: 97%

“…P. parvum is a euryhaline species that can tolerate a wide range of temperatures. Studies of different strains suggest optimal growth at salinity 8 to 34 and a temperature of 15 to 30°C (Larsen & Bryant 1998). However, P. parvum blooms often occur below salinity 8 and at colder water temperatures (Amsinck et al 2005, Ba ker et al 2009).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of different salinities on growth and intra- and extracellular toxicity of four strains of the haptophyte Prymnesium parvum

Weißbach¹,

Legrand²

2012

Aquat. Microb. Ecol.

View full text Add to dashboard Cite

The present study investigates the effect of brackish (7 PSU) and marine (26 PSU) salinity on physiological parameters and intra-and extracellular toxicity in 4 strains of Prymnesium parvum Carter. The different P. parvum strains were grown in batch cultures in 2 trials under different experimental conditions to test the development of intra-and extracellular toxicity during growth. The response of P. parvum toxicity to salinity was validated using 2 protocols. Intraspecific variations in growth rate, maximal cell density (yield) and cell morphology were controlled by salinity. Extracellular toxicity was higher at 7 PSU in all strains, but no correlation was found between intra-and extracellular toxicity. The variation of extracellular toxicity in response to salinity was much greater than that of intracellular toxicity, which indicates that P. parvum may be producing a variety of substances contributing to its various types of 'toxicity'.

show abstract

Growth rate and toxicity ofPrymnesium parvumandPrymnesium patelliferum(haptophyta) in response to changes in salinity, light and temperature

Cited by 82 publications

References 41 publications

The niche of an invasive marine microbe in a subtropical freshwater impoundment

The niche of an invasive marine microbe in a subtropical freshwater impoundment

Intra- and interspecies differences in growth and toxicity of Pseudo-nitzschia while using different nitrogen sources

Effect of different salinities on growth and intra- and extracellular toxicity of four strains of the haptophyte Prymnesium parvum

Contact Info

Product

Resources

About