Environmental effects on asexual reproduction rates of the scyphozoan Aurelia labiata

Purcell, Jennifer E.

doi:10.3354/meps07056

Cited by 129 publications

(135 citation statements)

References 41 publications

(61 reference statements)

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“…Most of these works examined the responses of polyps at the whole colony level, in particular how the colony size changes with environmental conditions. However, investigation at the individual polyp level (Purcell 2007, Liu et al 2009) is needed to understand the asexual reproduction in detail. Because of recent environmental changes in East Asian coastal waters where global warming and eutrophication are remarkable (Yan et al 2003, Gilbert et al 2005, Wang 2006), we studied the effects of combinations of temperature and food supply on asexual reproduction and somatic growth of A. aurita polyps at the individual level.…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies have shown that temperature, salinity, light, oxygen concentration, food supply, etc. influence the polyp asexual reproduction of the genus Aurelia (Coyne 1973, Keen & Gong 1989, Ishii & Watanabe 2003, Ishii et al 2008, Purcell 2007, Willcox et al 2007, Liu et al 2009). Most of these works examined the responses of polyps at the whole colony level, in particular how the colony size changes with environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

“…(Watanabe & Ishii 2001, Miyake et al 2002, Purcell 2007, Willcox et al 2008, we suggest that at least two other factors, viz. global warming and cultural eutrophication, can be responsible for the recently more prominent blooms of A. aurita medusae in East Asian coastal waters.…”

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confidence: 99%

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Combined effects of food supply and temperature on asexual reproduction and somatic growth of polyps of the common jellyfish Aurelia aurita s.l.

Han

Uye

2010

Plankton Benthos Res

113

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Abstract:The polyp stage is an important part of the Aurelia aurita s.l. life cycle, because polyp clones are able to increase their population size by budding, providing the opportunity to increase the medusa population by the production of many ephyrae through strobilation. We investigated asexual reproduction of A. aurita polyps on an individual basis at 4 different temperatures (i.e. 18, 22, 26 and 28 o C) and at 5 different food levels (i.e. 1.7, 3.3, 6.6, 10 and 13.3 mg) in the laboratory. Three types of asexual reproduction were observed: polyps directly budded from the parent stalk (DBP), polyps budded from the parent pedal stolon (SBP), and podocysts (PC). DBP was the major reproductive method (94% of the total) and SBP and PC accounted for only 5 and 1%, respectively. PC were produced by the polyps kept under low food supply (Յ3.3 mg C polyp Ϫ1 d Ϫ1) and high temperature (Ն26°C). Production of new polyps by DBP and SBP significantly increased with increasing food and temperature. The somatic growth of parent polyps significantly increased with more food and cooler temperatures. We conclude that both increases in water temperature through global warming and increases in abundances of zooplankton prey because of eutrophication may be responsible for the prominent blooms of A. aurita medusae in East Asian coastal waters in recent times.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Combined effects of food supply and temperature on asexual reproduction and somatic growth of polyps of the common jellyfish Aurelia aurita s.l.

Han

Uye

2010

Plankton Benthos Res

113

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“…Some laboratory studies of the asexual budding activity of A.aurita polyps have considered environmental factors such as temperature, salinity, and light, and found that temperature is the major factor to regulate the budding rate of polyps [5,7,[13][14][15][16][17]. Using their results we proposed a temperature dependent model to predict the bloom of A.aurita polyps.…”

Section: Introductionmentioning

confidence: 99%

A Simple Temperature Dependent Model to Predict the Bloom of Aurelia Aurita Polyps

Jin¹,

Oh²,

Choi³

et al. 2014

KSBB Journal

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Asexual benthic polyp reproduction plays a major role in the jellyfish bloom. Recent studies found that temperature is the most important factor to regulate the budding rate of the polyps. We established a simple dynamic model to count the number of polyps depending on the variation of temperature with two data sets from different places. The population of polyps was counted through the budding rate and the number of budding times by Fibonacci sequence. It is assumed that the budding rate depends on the temperature only.The budding rate of the asexual reproduction shows very sensitive to the distribution of the seawater temperature. The model was tested to the temperature data of Ansan located in the west sea of Korea. The results indicate that this model can be useful to predict the blooms of Aurelia aurita polyps, which may have considerable influence on the bloom of medusa. The shape of temperature curve plays a key role in the predicting the bloom of Aurelia aurita polyps.

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“…Many anthropogenic stressors are likely to impact jellyfish development, including global warming, overfishing, nutrient additions, invasion and translocation of species or global ocean sprawl (Purcell et al 2007(Purcell et al , 2012Duarte et al 2012). Ocean acidification, the decrease in seawater pH due to the marine absorption of atmospheric CO 2 (Pelejero et al 2010 and references therein), could also play an important role.…”

mentioning

confidence: 99%

Polyp flats, a new system for experimenting with jellyfish polyps, with insights into the effects of ocean acidification

Olariaga¹,

Guallart²,

Fuentes³

et al. 2014

Limnology & Ocean Methods

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Research interest on jellyfish has grown exponentially over the last years and studies focusing on the biology and ecology of the jellyfish polyp stage are being recognized as crucial in understanding jellyfish proliferations. Due to the difficulty of conducting in situ work with jellyfish polyps, laboratory experiments are the most used approach. Here, we describe the design and successful testing of a new system that allows continuous seawater renewal while keeping constant the selected physicochemical conditions of the water throughout the experiment in contrast to closed systems used previously. As a first test, we started an experiment to assess the effects of ocean acidification on the growth and development of jellyfish polyps of Aurelia sp. This new design demonstrated high precision in maintaining constant conditions (pH, temperature, and flow rates) among the replicates of each treatment, and ensured excellent conditions for jellyfish polyp survival. All together it has shown to be an effective platform to assess the effect of environmental variables on the growth and development of jellyfish polyps.

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Environmental effects on asexual reproduction rates of the scyphozoan Aurelia labiata

Cited by 129 publications

References 41 publications

Combined effects of food supply and temperature on asexual reproduction and somatic growth of polyps of the common jellyfish Aurelia aurita s.l.

Combined effects of food supply and temperature on asexual reproduction and somatic growth of polyps of the common jellyfish Aurelia aurita s.l.

A Simple Temperature Dependent Model to Predict the Bloom of Aurelia Aurita Polyps

Polyp flats, a new system for experimenting with jellyfish polyps, with insights into the effects of ocean acidification

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