Giantism and its role in the harmful algal bloom species Phaeocystis globosa

Smith, Walker O; Liu, Xiao; Tang, Kam W.; DeLizo, Liza M.; Doan, Nhu Hai; Nguyễn, Ngọc Tuấn; Wang, Xiaodong

doi:10.1016/j.dsr2.2012.12.005

Cited by 47 publications

(22 citation statements)

References 30 publications

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“…Harmful algal blooms have become global environmental problems, which affect the balance of aquatic ecosystem and development in aquaculture and fishing industries 6 , 7 . The haptophyte Phaeocystis globosa , one of the most widespread marine algae, is a harmful bloom-forming phytoplankton 8 .…”

Section: Introductionmentioning

confidence: 99%

Trade-off between reproduction and lifespan of the rotifer Brachionus plicatilis under different food conditions

Sun

Hou

Xue

et al. 2017

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Phaeocystis globosa, one of the most typical red tide-forming species, is usually mixed in the food composition of rotifers. To explore how rotifers respond by adjusting life history strategy when feeding on different quality foods, we exposed the rotifer Brachionus plicatilis to cultures with 100% Chlorella, a mixture of 50% P. globosa and 50% Chlorella, or 100% P. globosa. Results showed that rotifers exposed to 100% Chlorella or to mixed diets produced more total offspring and had higher age-specific fecundity than those exposed to 100% P. globosa. Food combination significantly affected the net reproduction rates of rotifers. By contrast, rotifers that fed on 100% P. globosa or on mixed diets had a longer lifespan than those fed on 100% Chlorella. The overall performances (combining reproduction and lifespan together) of rotifers cultured in 100% Chlorella or mixed diets were significantly higher than those cultured in 100% P. globosa. In general, Chlorella favors rotifers reproduction at the cost of shorter lifespan, whereas P. globosa tends to extend the lifespan of rotifers with lower fecundity, indicating that trade-off exists between reproduction and lifespan under different food conditions. The present study also suggests that rotifers may have the potential to control harmful P. globosa.

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Section: Introductionmentioning

confidence: 99%

Trade-off between reproduction and lifespan of the rotifer Brachionus plicatilis under different food conditions

Sun

Hou

Xue

et al. 2017

Sci Rep

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“…Furthermore, these costs are likely to be ecological relevant, including enhanced sinking rate of colonies. P. globosa colonies in exponential phase always exhibit negative buoyancy 38 , while giant P. globosa colonies collected from Vietnamese coastal waters had sinking rates as high as 516 m d −1 33 . The high sinking rate poses a significant challenge for the colonies to maintain their population at the sea surface 33 …”

Section: Discussionmentioning

confidence: 99%

“…Allocation of limited resources to induced defense prevents the use of these resources in other fitness-relevant functions 27 . As a result, the expression of induced defense in P. globosa is expected to impair growth, particularly considering that the mucilaginous matrix can account for >50% of the total colonial carbon of P. globosa 31 32 33 . Contrary to the expectation, induced defense did not negatively influence the growth rate in P. globosa under nutrient-replete conditions.…”

Section: Discussionmentioning

confidence: 99%

Allocation Costs Associated with Induced Defense in Phaeocystis globosa (Prymnesiophyceae): the Effects of Nutrient Availability

Wang

Yan

et al. 2015

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Colony enlargement in Phaeocystis globosa has been considered as an induced defense strategy that reduces its susceptibility to grazers, but allocation costs inflicted by this plastic morphological defense are poorly understood. We conducted experiments in which P. globosa cultures were exposed to chemical cues from copepods, ciliates and heterotrophic dinoflagellates, respectively, under nutrient sufficient and deficient conditions to evaluate allocation costs associated with induced defense. Phaeocystis globosa responded to chemical cues from grazers by increasing colony diameter irrespective of nutrient conditions. We did not find trade-offs between induced defense and growth rate under nutrient sufficient conditions. Instead, induced defensive P. globosa had higher growth rates than non-induced P. globosa. When nutrient became limited, P. globosa exposed to grazing cues from copepods and dinoflagellates had significantly decreased growth rates when compared with non-induced P. globosa. We suggested that the decreased growth revealed allocation costs associated with induced defense that may influence on the trophic interactions between Phaeocystis and consumers.

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“…The ecology and physiology of Phaeocystis are relatively well studied, but given the variety of environments the genus can occupy, it is difficult to generalize about its responses to oceanographic conditions or ecological impacts. Phaeocystis has an unusual life cycle that includes both solitary cells and colonies; the colonies can reach considerable size (up to 2 mm in most systems; Rousseau et al., 1994), but up to 3 cm in others (Smith et al., 2014). Colonies are generally spherical during active growth, with cells held by a mucopolysaccharide envelope (Hamm et al., 1999).…”

Section: Introductionmentioning

confidence: 99%

A Regional, Early Spring Bloom of Phaeocystis pouchetii on the New England Continental Shelf

et al. 2021

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The genus Phaeocystis is distributed globally throughout the world's oceans, forming blooms in European, Asian, Antarctic, Arctic, and North American waters and in tropical, polar and temperate systems. It often (but not always) releases dimethylsulfide into the surface layer, which has the potential for altering weather and climate patterns (Charlson et al., 1987; Stefels et al., 1995), and significantly influences the biogeochemistry of sulfur (Wang et al., 2016). In addition, Phaeocystis is considered to be largely "unpalatable" to zooplankton grazers (Nejstgaard et al., 2007). The ecology and physiology of Phaeocystis are relatively well studied, but given the variety of environments the genus can occupy, it is difficult to generalize about

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Giantism and its role in the harmful algal bloom species Phaeocystis globosa

Cited by 47 publications

References 30 publications

Trade-off between reproduction and lifespan of the rotifer Brachionus plicatilis under different food conditions

Trade-off between reproduction and lifespan of the rotifer Brachionus plicatilis under different food conditions

Allocation Costs Associated with Induced Defense in Phaeocystis globosa (Prymnesiophyceae): the Effects of Nutrient Availability

A Regional, Early Spring Bloom of Phaeocystis pouchetii on the New England Continental Shelf

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