Wild Pacific oyster Magallana gigas (Thunberg, 1793) populations in Romanian Black Sea waters &amp;ndash; friend or foe?

Krapal, Ana-Maria; Ioniță, Marin; Caplan, Mihaela; Buhaciuc-Ioniță, Elena

doi:10.3897/travaux.62.e49074

Cited by 5 publications

(3 citation statements)

References 14 publications

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“…Pacific oysters (C.gigas) are one of the most globalized highly commercial bivalves that have been introduced to 66 countries outside their native range (northwest Pacific) for aquaculture purposes (Herbert et al, 2016). They were first introduced to the northern Black Sea coastal waters from the Sea of Japan during the 1980s, with active attempts for its acclimatization since then (Krapal et al, 2019;Aydın and Gül, 2021).…”

Section: Resultsmentioning

confidence: 99%

First record of Sebastes schlegelii Hilgendorf, 1880 along the Turkish Black Sea coast – new addition to the alien species inventory

BİLECENOĞLU,

YOKEŞ,

AYDIN

2023

Turkish Journal of Maritime and Marine Sciences

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Sebastes schlegelii is a typical bottom dwelling boreal species, whose native distribution range includes Japan, Korean peninsula and China. This northwest Pacific originated species has recently been recorded from the Crimean and Caucasian coast (northern Black Sea), whose introduction was assumed to be either by balast waters or the acclimatization of Crassostrea gigas (Pacific oyster). On 16 August 2023, a single S.schlegelii specimen with 20.6 cm standard length and 282.1 g in weight was captured off the Ordu coast (southeastern Black Sea), which was previously an unreported fish from the Turkish marine waters. Available information reveals this alien species to be fished regularly, although in small quantities, indicating a presumably established population in the region. The species should be treated as a potentially invasive fish, since it may negatively influence to the local biodiversity through interspecific competition. Close monitoring of its population is strongly suggested.

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Section: Resultsmentioning

confidence: 99%

First record of Sebastes schlegelii Hilgendorf, 1880 along the Turkish Black Sea coast – new addition to the alien species inventory

BİLECENOĞLU,

YOKEŞ,

AYDIN

2023

Turkish Journal of Maritime and Marine Sciences

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“…In the Gulf of Trieste, which includes shores of Italy, Croatia and Slovenia, Pacific oysters have established over the whole mesolittoral and infralittoral borders and are believed to compete with the Mediterranean mussel Mytilis galloprovincialis , although no field tests were carried out 93 . In Romania, near the Agigea harbour (Constanța), a 2017 study suggested populations appeared to fill an empty ecological niche left by O. edulis , which disappeared from the Romanian coast due to predation by the invasive veined rapa whelk Rapana venosa 94 …”

Section: Resultsmentioning

confidence: 99%

Socioecological factors related to aquaculture introductions and production of Pacific oysters (Crassostrea gigas) worldwide

Martínez-Garciá

Ruesink

Chon

et al. 2021

Reviews in Aquaculture

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Pacific oysters (Crassostrea gigas) have been introduced worldwide for aquaculture, which can benefit food sovereignty and economic development; however, established non‐native populations may present risks for local organisms and habitats. We reviewed the documented introductions of C. gigas by country to evaluate factors related to introduction, establishment and production, and to determine impacts of feral populations. To date, C. gigas has been introduced in 64 countries and 10 territories, has been established in 32 and contributes to cupped oyster production in 36 (additionally, three native range countries). Oysters were more likely to be introduced and to establish in higher‐latitude countries, but the economic factor of per capita Gross Domestic Product per capita (GDPpc) served as a stronger explanatory variable than latitude for introduction. Earlier introduction and the use for extended periods in aquaculture, not just in trials, further increased establishment. Commercial production increased with coastline length and when established populations were present, but in contrast to establishment, declined at higher latitude. Effects of feral populations have been studied in 11 countries, spanning a range from negative to facilitative as expected for an ecosystem engineer, while reaching levels of concern warranting removal from coastlines in the UK, Norway, Sweden Australia and South Africa. The use of GDPpc in analyses revealed a widespread inequity in terms of low investment in Pacific oyster aquaculture in poorer countries, while richer countries were able to invest not only in aquaculture but also in studies of environmental impacts of feral oysters.

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“…The population was assessed at least once a year since its discovery, during diving sessions. Individuals were measured and surface of the colony assessed using the same methods described in previous studies [8].…”

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confidence: 99%

Invasive species in the context of climate change: the case of Magallana Gigas (Thunberg, 1793) in the Black Sea

Krapa¹,

Buhaciuc-Ioniță²,

Ionita³

et al. 2021

Sustainable Use and Protection of Animal World in the Context of Climate Change

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The current climate changes are having a significant impact on species distribution. While some species are affected, others are thriving in these new conditions, expanding their range. This is also the case of some invasive species who seem to benefit from these changes. The invasive Pacific oyster Magallana gigas is among these species. The current situation of the Pacific oyster in the Black Sea is discussed, with new data from the Romanian waters.

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Wild Pacific oyster Magallana gigas (Thunberg, 1793) populations in Romanian Black Sea waters – friend or foe?

Cited by 5 publications

References 14 publications

First record of Sebastes schlegelii Hilgendorf, 1880 along the Turkish Black Sea coast – new addition to the alien species inventory

First record of Sebastes schlegelii Hilgendorf, 1880 along the Turkish Black Sea coast – new addition to the alien species inventory

Socioecological factors related to aquaculture introductions and production of Pacific oysters (Crassostrea gigas) worldwide

Invasive species in the context of climate change: the case of Magallana Gigas (Thunberg, 1793) in the Black Sea

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