Long-term dynamics of the copepod invader Oithona davisae in coastal waters of the Black Sea

Seregin, S. A.; Popova, E. V.

doi:10.1134/s207511171604007x

Cited by 19 publications

(11 citation statements)

References 16 publications

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“…This led to earlier attainment of the maximum population abundance and higher absolute total number of O. davisae, especially in early October 2016 (554 ind × 10 3 m -3 ), when due to an abnormally high water temperature (25-26.5 °С) from the middle until the end of June, the total population abundance amounted to 124 ind × 10 3 m -3 while the number of copepodites and adults was equal to 27 ind × 10 3 m -3 , which was close to the peak abundance of these stages (32.5 ind × 10 3 m -3 ) during the September and November maximums in 2013. A similar correlation between the rise in the mean temperature and the increase in the mean annual number of O. davisae was observed during 2010-2015 near the exit of Sevastopol Bay by Seregin and Popova (2016). Based solely on bottle sampling (1-6 L), the authors reported the 2-year cycle changes in the maximum seasonal numbers of O. davisae in Sevastopol Bay.…”

Section: Discussionsupporting

confidence: 62%

“…In September 2014, we also recorded the peak abundance, which was significantly lower (345 ind × 10 3 m -3 ), probably due to the differences in location and depth of the stations. According to Seregin and Popova (2016), 88%-93% of the total population number in the period of its maximum development consisted of the nauplii. These data are in agreement with our results.…”

Section: Discussionmentioning

confidence: 99%

“…Despite the fact that O. davisae is a warm-water species (Uye and Sano, 1995), it has successfully acclimatized in the cold Black Sea due to its ability to survive low temperatures in the state of fertilized quasi-diapausing females (Hubareva and Svetlichny, 2013;Svetlichny et al, 2016), which can produce a new generation after the spring rise in temperature. The periods of seasonal succession of the O. davisae population in Sevastopol Bay were determined by Altukhov et al (2014), Seregin and Popova (2016), and Svetlichny et al (2016). The first period, from the middle of May until August-September, was characterized by an increase in the percentage of offspring at a low population density for O. davisae.…”

Section: Introductionmentioning

confidence: 99%

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Population dynamics of the copepod invader Oithona davisae in the Black Sea

Svetlichny¹,

Hubareva²,

İşinibilir³

2018

Turk J Zool

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During 2013-2016 in Sevastopol Bay, seasonal and interannual dynamics of the population density, age and sex composition, fecundity, and mortality of males and females of O. davisae were studied. A maximum population number (up to 554 ind × 10 3 m-3) was registered at the end of summer-end of autumn. In this period, the nauplii and early copepodite stages constituted up to 95% of the O. davisae population. During 1-2.5 cold winter-spring months, the population consisted only of females, who were not numerous. The phase of latent population development was recorded from April until July-August, with a high share of ovigerous females, maximum clutch size, and high egg production rate but low population density, which may be due to predator pressure from lobate ctenophores. The average share of adult males amounted to 32% at the end of spring and 27% at the beginning of winter, while the share of dead males reached maximum values (20.7%) during the winter degradation period for the population. On the basis of the studied successions of the population's developmental stages, from ovigerous females through nauplii and early copepodites to adults, the number of generations produced by O. davisae during the reproductive period (10-11) was determined.

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Section: Discussionsupporting

confidence: 62%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Population dynamics of the copepod invader Oithona davisae in the Black Sea

Svetlichny¹,

Hubareva²,

İşinibilir³

2018

Turk J Zool

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“…The abundance of O. davisae was high in the summer months (September, July) and in February in the inner Izmir Bay. This species is thermophilic ; they are generally most abundant during the warmer periods and least abundant during winter and early spring in their habitats (Altukhov et al, 2014;Mihneva & Stefanova, 2013;Seregin & Popova, 2016;Üstün & Terbıyık Kurt, 2016;Uye & Sano, 1998;Yıldız et al, 2017;Zagami et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

First distribution record of the invasive copepod Oithona davisae Ferrari and Orsi, 1984, in the coastal waters of the Aegean Sea

Kurt

Beşiktepe

2019

Marine Ecology

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The occurrence of the invasive nonindigenous copepod Oithona davisae Ferrari and Orsi, 1984, is reported for the first time in the Aegean Sea. The data we collected in August 2017 from 14 stations along the Turkish coast of the Aegean Sea reveal the spatial distribution of O. davisae between the openning of the Dardanelles Strait in the north and the Izmir Bay in the south. The O. davisae individuals, in seven mesozooplankton samples collected from a single station, were consistently found in the inner part of the Izmir Bay from April 2015‐October 2016. The abundance of female O. davisae ranged from 4 ind./m3 in April 2015 to 31,524 ind./m3 in July 2016 and contributed to the total oithonid female population by 10.8% in April 2015 and 92.8% in September 2016. Our results show that this species is well established in the inner part of Izmir Bay and that it has become a permanent component of the copepod community in the area.

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“…Общий уровень обилия ММЗП в весенний период приведен лишь для устья Севастопольской бухты и ближайшего к ней прибрежья Севастополя (Серегин, Попова, 2012а (Заика и др., 1976; Ковалев, 1980 (Сажина, 1985), известно, что A. tonsa является стенотермным тепловодным видом, приуроченным к прибрежным акваториям (Paffenhöfer, Stearns, 1988;Tester, Turner, 1991). В Черном море она развивается при температурах выше 15 °С в мелководных бухтах, где вода прогревается до самого дна (Gubanova, 2000) и в прибрежных акваториях присутствует в планктоне летом и осенью (Заремба, 2017 Горизонт, м (Uye, Sano, 1995), так и в Черном море (Серегин, Попова, 2015;Seregin, Popova, 2016;Svetlichny et al, 2016;…”

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Metazoan Microzooplankton in the Crimean Coastal Waters of the Black and Azov Seas in Spring: Composition, Abundance and Spatial Distribution

A.¹,

V.²

2019

J. Sib. Fed. Univ., Biol.

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The goal of the study was to assess the abundance and species composition of the "spring" micrometazooplankton (MMZP), providing previously unavailable data. A total of 59 samples were collected at 20 stations within the upper 50-m layer of water. The average MMZP abundance in the surface layer of the Black Sea waters was 14.8 ± 5.8 thousand ind. m-3. The greatest number (up to 35 thousand ind. m-3) was observed in the coastal waters of Kalamitsky and Karkinitsky bays and the smallest (1-13 thousand ind. m-3) in the waters of the south coast of Crimea. In the Azov Sea, MMZP abundance was almost one order of magnitude higher and ranged from 52.4 to 198.6 thousand ind. m-3 in the surface layer and from 39.0 to 89.0 thousand ind. m-3 in the bottom layer. The species composition of the MMZP in the Black Sea waters was characterized by the predominance of the crustacean fraction with copepods as its major part (81.9 and 77.4% of the total abundance, respectively). In the Azov Sea, meroplanktonic larvae of barnacles dominated, constituting over 65%; larvae of polychaetes, bivalve veligers, and rotifers were also abundant. The vertical distribution patterns were determined by the biotope and predominant composition of MMZP. The abundance maxima in the middle and lower layers of the water column in the shallow-water zones were associated with veligers of mollusks while copepods were responsible for the local maxima in different layers of deeper habitats, where they dominated.

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Long-term dynamics of the copepod invader Oithona davisae in coastal waters of the Black Sea

Cited by 19 publications

References 16 publications

Population dynamics of the copepod invader Oithona davisae in the Black Sea

Population dynamics of the copepod invader Oithona davisae in the Black Sea

First distribution record of the invasive copepod Oithona davisae Ferrari and Orsi, 1984, in the coastal waters of the Aegean Sea

Metazoan Microzooplankton in the Crimean Coastal Waters of the Black and Azov Seas in Spring: Composition, Abundance and Spatial Distribution

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