First bloom event of the small dinoflagellate Prorocentrum shikokuense in the Mediterranean Sea: cryptogenic or introduced?

Roselli, Leonilde; Vadrucci, Maria Rosaria; Fanelli, Francesca; Ungaro, Nicola; Caroppo, Carmela

doi:10.1016/j.marpolbul.2018.12.034

Cited by 10 publications

(10 citation statements)

References 35 publications

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“…Takano and Matsuoka (2011) disagreed and claimed that P. shikokuense does have validity under the ICZN and has priority over P. donghaiense, as described by Lu and Goebel (2001). Consequently, the name P. shikokuense was used by Japanese and Italian researchers (Roselli et al, 2019), whereas P. donghaiense was used by mostly Chinese researchers and the Norwegian Culture Collection of Algae (NORCCA). In addition, based on morphological descriptions of Prorocentrum species provided by Dodge (1982), the species was also identified as P. dentatum by Korean and Japanese researchers (Yoo and Lee 1986;Onoue and Nozawa 1989).…”

Section: From Iwamatsumentioning

confidence: 99%

Prorocentrum shikokuense Hada and P. donghaiense Lu are junior synonyms of P. obtusidens Schiller, but not of P. dentatum Stein (Prorocentrales, Dinophyceae)

Shin

Mertens

et al. 2019

Harmful Algae

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In Japanese, Chinese and Korean coastal waters, recurrent blooms of a small, elongate Prorocentrum species have been observed in recent years. In previous studies, this species has been respectively identified as P. shikokuense, P. donghaiense and P. dentatum, despite morphological similarity and identical rDNA sequences. To resolve the confusion, morphological features, including the architectural details of the periflagellar area, were examined and ribosomal DNA (rDNA) sequences were obtained from specimens collected from the East China Sea and Korean coast, and a strain established in the waters off the Canary Islands of Spain. In addition, the descriptions of the three species and allied species were reviewed. Morphological observations and a phylogeny based on the SSU, ITS region and LSU rDNA sequences revealed that the previously confused species and our studied strains are conspecific and that the morphology of strains identified as P. dentatum in the phylogenetic trees does not coincide with P. dentatum sensu stricto. The confusion can be traced back to Dodge (1975, p. 116), who considered P. veloi, P. monacense and P. obtusidens as junior heterotypic synonyms of P. dentatum. However, Dodge's P. dentatum are closer to P. obtusidens sensu stricto, rather than P. dentatum sensu stricto. P. obtusidens sensu stricto can be distinguished from P. dentatum sensu stricto by its relatively small size, parallel sides towards the anterior and a blunt anterior extension on one side. This indicates that P. obtusidens should not be considered a synonym of P. dentatum sensu stricto. In addition, a comparison of the original descriptions of P. obtusidens and allied species allowed to conclude that small, elongate Prorocentrum from Japanese, Chinese and Korean coastal waters previously identified as P. Please note that this is an author-produced PDF of an article accepted for publication following peer review. The definitive publisher-authenticated version is available on the publisher Web site. shikokuense, P. donghaiense, P. dentatum sensu Yoo and Lee (1986) and the specimens studied herein, which share identical rDNA sequences, morphologically coincide with P. obtusidens. Therefore, it is proposed that P. shikokuense and P. donghaiense should be regarded as junior synonyms of P. obtusidens. Highlights ► Prorocentrum shikokuense Hada, P. donghaiense Lu and Prorocentrum obtusidens Schiller are conspecific. ► Prorocentrum obtusidens is a senior to P. shikokuense and P. donghaiense. ► Prorocentrum obtusidens is a separate species from P. dentatum sensu stricto, P. veloi and P. monacense. ► The periflagellar area of Prorocentrum obtusidens consists of seven platelets bearing a wing-like structure and two platelets without a wing-like structure, one flagellar pore and one accessory pore.

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Section: From Iwamatsumentioning

confidence: 99%

Prorocentrum shikokuense Hada and P. donghaiense Lu are junior synonyms of P. obtusidens Schiller, but not of P. dentatum Stein (Prorocentrales, Dinophyceae)

Shin

Mertens

et al. 2019

Harmful Algae

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“…(Genovesi et al 2015) France, Italy, Spain, Western Med. (Genovesi et al 2015) A. taylori Alien (Roselli et al 2019) 2016 (Roselli et al 2019) et al 2018). Furthermore, Gambierdiscus sp.…”

Section: Distribution and Originmentioning

confidence: 99%

“…further studies are needed to identify the toxicity of all alien Mediterranean algae and their effects on human health and environment. These are several irregularities and lack of knowledge; for instance, little is known about the effects of YTXs on humans (Zingone et al 2006), and even though P. shikokuense's blooms are considered toxic in Japan, no harmful effects were observed during Mediterranean blooms (Roselli et al 2019).…”

Section: Toxins Of Alien/invasive Speciesmentioning

confidence: 99%

“…These invasions are considered to be one of the major drivers of change for biodiversity. For the Mediterranean area, HAB events of alien species induce severe environmental and economic impacts affiliated with biodiversity loss, unbalanced ecosystem, and degradation of ecosystem services such as fisheries, aquaculture, and tourism (Roselli et al 2019). The Harmful Algal Information System (HAIS) is the main initiative that focusses on accumulating data on HAB events.…”

Section: Alien Invasive Hab Mediterranean Eventsmentioning

confidence: 99%

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Mediterranean alien harmful algal blooms: origins and impacts

Marampouti

Buma

Boer

2020

Environ Sci Pollut Res

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Harmful algal blooms (HABs) are mostly phytoplankton blooms, which have detrimental environmental and socioeconomic impacts. The Mediterranean Sea due to its enclosed nature is of special concern since it has an enormously rich native biodiversity. Though, it is also the world’s most invaded marine ecosystem and is considered at very high risk of future invasions. The aim of this review study is to explore the origins, establishment, environmental, and socioeconomic impacts of HABs caused by nonnative algal species in the Mediterranean Sea. Based on this, it is also discussed whether HABs form an increasing threat in the basin, and what could possibly be done to prevent or to minimize their impacts. The increasing rate of their introduction and the harmful impacts that they have on the environment, economy, and human health makes it important to have accurate knowledge about HABs. Anthropogenic activities and climate change are considered the main contributors of alien invasions but also the main enablers of HAB events. Mediterranean HABs are adequately studied, but there are no studies purposefully concerning invasive microalgae species in the basin. In the present study, 20 species have been identified, and an attempt has been made to collect their introduction information, as well as known or suspected impacts. Future research should be focused on data mining, current legislation updates, and monitoring of Mediterranean coastlines.

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“…that are able to feed on all seven Prorocentrum spp. (group I); the second group comprises O. marina and O. rotunda that are able to feed on some Prorocentrum spp., but not others (group II); and the third group comprises Pfiesteria piscicida that and P. triestinum have been reported to cause red tides in many countries, while P. donghaiense, P. rhathymum, P. hoffmannianum, and P. lima have been reported to cause red tides in only some countries (Labib 1996, Ismael and Aida 1997, Hajdu et al 2000, Hernández-Becerril et al 2000, Tango et al 2005, Vila and Masó 2005, Faust 2009, Ingarao et al 2009, Li et al 2011, Roselli et al 2019. However, to understand the population dynamics of each of these species, their growth and mortality rates as a result of predation should be determined.…”

Section: Swimming Speedmentioning

confidence: 99%

Feeding by common heterotrophic protist predators on seven <italic>Prorocentrum</italic> species

You¹,

Jeong²,

Kang³

et al. 2020

ALGAE

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Species belonging to the dinoflagellate genus Prorocentrum are known to cause red tides or harmful algal blooms. To understand the dynamics of a Prorocentrum sp., its growth and mortality due to predation need to be assessed. However, there are only a few Prorocentrum spp. for which heterotrophic protist predators have been reported. We explored feeding by the common heterotrophic dinoflagellates Gyrodinium dominans, Oxyrrhis marina, Pfiesteria piscicida, Oblea rotunda, and Polykrikos kofoidii and the naked ciliate Strombidinopsis sp. (approx. 90 µm cell length) on the planktonic species Prorocentrum triestinum, P. cordatum, P. donghaiense, P. rhathymum, and P. micans as well as the benthic species P. lima and P. hoffmannianum. All heterotrophic protists tested were able to feed on the planktonic prey species. However, O. marina and O. rotunda did not feed on P. lima and P. hoffmannianum, while G. dominans, P. kofoidii, and Strombidinopsis sp. did. The growth and ingestion rates of G. dominans and P. kofoidii on one of the seven Prorocentrum spp. were significantly different from those on other prey species. G. dominans showed the top three highest growth rates when it fed on P. triestinum, P. cordatum, and P. donghaiense, however, P. kofoidii had negative growth rates when fed on these three prey species. In contrast, P. kofoidii had a positive growth rate only when fed on P. hoffmannianum. This differential feeding on Prorocentrum spp. between G. dominans and P. kofoidii may provide different ecological niches and reduce competition between these two common heterotrophic protist predators.

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First bloom event of the small dinoflagellate Prorocentrum shikokuense in the Mediterranean Sea: cryptogenic or introduced?

Cited by 10 publications

References 35 publications

Prorocentrum shikokuense Hada and P. donghaiense Lu are junior synonyms of P. obtusidens Schiller, but not of P. dentatum Stein (Prorocentrales, Dinophyceae)

Prorocentrum shikokuense Hada and P. donghaiense Lu are junior synonyms of P. obtusidens Schiller, but not of P. dentatum Stein (Prorocentrales, Dinophyceae)

Mediterranean alien harmful algal blooms: origins and impacts

Feeding by common heterotrophic protist predators on seven <italic>Prorocentrum</italic> species

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