Introduction of species of genus Marenzelleria Mensil, 1896 (Polychaeta: Spionidae) in the Don River delta and Taganrog Bay

Syomin, V. L.; Sikorski, Andrey; Kovalenko, É. P.; Bulysheva, N. I.

doi:10.1134/s2075111716020107

Cited by 7 publications

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“…Until very recently, adult specimens of only five species of Polychaeta have been recorded from the Don River mouth and Taganrog Bay: Ponto-Caspian relics Hypania invalida (Grube, 1960), Hypaniola kowalewskii (Grimm, 1877) (Ampharetidae) and Manayunkia caspica Annenkova, 1929 (Sabellidae) together with the Atlantic euryhaline nereids Hediste diversicolor (Müller, 1776) and Alitta succinea (Leuckart, 1847). Therefore, the occurrence of two additional polychaete species, one of the family Sabellidae (see Syomin et al ., 2015), and another of the genus Marenzelleria during a short period of time (less than one year) is a considerable addition to the regional species composition (see Syomin et al ., 2016).…”

Section: Introductionmentioning

confidence: 99%

The invasion of the genus Marenzelleria (Polychaeta: Spionidae) into the Don River mouth and the Taganrog Bay: morphological and genetic study

et al. 2017

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Alien polychaetes belonging to the genus Marenzelleria were recorded from the mouth of the Don River and Taganrog Bay in the Sea of Azov in February–March 2014. Morphological characteristics varied greatly and matched those of two species: M. neglecta and M. arctia. Some individuals did not match the descriptions of both species. A genetic study using different sequences (primarily COI, but also 16S, 28S, cytb and nuclear histone 3a) showed that only M. neglecta was present despite some morphological mismatches. A morphological description of the species according to the new data is presented, together with a revised table of variability of the key numeric characters. Since 2014, Marenzelleria has spread swiftly and become dominant in a considerable part of the Taganrog Bay, making up to 91% of the total abundance/biomass (6800 ind. m−2 and 31.2 g m−2, respectively). Monodominant sites were also present. Its occurrence is 100% in recent surveys. Such a sharp increase seems to be due to a lack of detritophages in the bay; this is supported by the fact that M. neglecta has not formed its specific assemblage. The community structure, if M. neglecta is excluded, is equal to that before the invasion. In the Sea of Azov itself, M. neglecta is not as abundant, but occurs up to the Strait of Kertch and at some sites in the Black Sea. Its spread further into the Black Sea seems possible, as well as into the Caspian Sea via the Volga-Don Canal.

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Section: Introductionmentioning

confidence: 99%

The invasion of the genus Marenzelleria (Polychaeta: Spionidae) into the Don River mouth and the Taganrog Bay: morphological and genetic study

et al. 2017

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“…В Таганрогском заливе E. affinis доминирует не только зимой, но и летом в опреснённой восточной части [12]. Во все годы исследований зимние популяции E. affinis и C. aquaedulcis на 89-98 % состояли из копеподитов и науплиусов [7,8] [17]. Благодаря наличию стадии пелагической личинки многощетинковый червь способен к транспортировке с балластной водой судов и к расселению в другие бассейны Мирового океана.…”

Section: результатыunclassified

“…В Темрюкском заливе при аналогичных температурных условиях плотность этих организмов была в четыре раза ниже. Согласно работе [17], в 2015 г. максимальная плотность взрослых особей этих организмов (6823 экз.•м -2 ) отмечена в Таганрогском заливе и дельте Дона. В дальнейшем полихеты расселились по Азовскому морю, включая Керченский пролив.…”

Section: результатыunclassified

“…Вместе с тем зоопланктон в период формирования ледового покрова в водоёме изучен не полно; ощущается недостаток актуальных сведений о состоянии зимнего голо-и меропланктона [7,8]. За последние годы в Азовское море вселилось несколько чужеродных видов, в том числе арктические виды многощетинковых червей, которые в своём развитии имеют стадию пелагической личинки [2, 16,17].…”

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Современное Состояние Голо- И Меропланктона Азовского Моря В Период Формирования Ледового Покрова

Селіфонова

2019

mbj

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The Sea of Azov is an inland freezing marine water basin. Winter season is considered to be one of the most important seasons for understanding patterns of functioning and formation of productivity of the ecosystem of the Sea of Azov. However, holo- and meroplankton during the formation of ice cover in the sea have not been studied enough. In recent years, several alien species, including Arctic species of polychaete worms, which in their development have the stage of pelagic larvae, have naturalized in the Sea of Azov. The aim of the work is to study the taxonomic composition and numerical abundance of winter holo- and meroplankton of the Sea of Azov in December 2018. Zooplankton sampling was conducted in the bays of the Sea of Azov, viz., Taganrog and Temryuk during the formation of seasonal ice cover. Zooplankton samples were collected from December 3 to 14 at temperatures from 0 to +3 °C at 14 stations, 9 of which were performed in the Taganrog Bay (the port area of Yeisk) in three replications, and 5 of which – in the Temryuk Bay (each sample – in one replication). Zooplankton was sampled throughout the water column at depths of 4–8 meter using a big-sized Juday net with an opening diameter of 37 cm (mesh size was 120 μm) by total catch. The material was fixed by 2–4 % neutral formaldehyde and treated in the laboratory by the conventional procedure. Calculations of biomass were made using the tables of the average mass of organisms. The results showed that under similar temperature conditions the density of holo- and meroplankton organisms in the Taganrog Bay was four times higher than in the Temryuk Bay. Winter subglacial zooplankton was represented by two groups of organisms – native eurythermic forms of holoplankton and polychaetes larvae. As before, calanoid copepod composition was dominated by euryhaline Ponto-Caspian species Eurytemora affinis (Poppe, 1880). However, the species composition of the winter meroplankton of the Sea of Azov changed significantly in comparison with that of the period up to 2014. Unusual high density (118–119.9 thousand ind.·m−3) of polychaete larvae of Marenzelleria genus, the recent invader in the Sea of Azov, was registered in the Taganrog Bay at a low water temperature of 0…+1.2 °C. The peak of zooplankton numerical density (128.9–136.7 thousand ind.·m−3) was observed in winter season for the first time. Winter subglacial maximum of abundance of the polychaetes larvae of Marenzelleria sp. was 4–6 times higher than the abundance of meroplankton, previously noted in June, the most productive month of the year. Naturalization of polychaete worms Marenzelleria sp. can lead to a radical restructuring of the Sea of Azov ecosystem and to an increase of its productivity. Further studies of the phenology of these polychaetes larval stages in this basin are needed.

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“…Hydrobiology. An important result of the marine expeditions in 2015-2016 was the discovery of the Marenzelleria neglecta Mesnil 1896 polychaete -a new inhabitant of the Taganrog Bay, brought here with the ballast waters of vessels from the Atlantic and massively settled in the waters of the Bay [36]. In March and June 2016, methods for the operative remote monitoring of the aquatic environment of the Taganrog Bay and Don estuary area were tested, based on analyzing the shape of the spectra of the spectral brightness coefficients of the radiation ascending from the water and its relation to chlorophyll a and phytoplankton [37].…”

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R/V “Professor Panov”: 15 Years of Marine Scientific Research

Matishov¹,

Stepanyan²

2018

PhO

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The Taganrog Bay of the Azov Sea has attracted attention of scientists for more than 100 years. In different periods intensity of research sometimes increased, sometimes decreased; and in 2003 alone, when the Southern scientific center of RAS (SSC RAS) was formed, it became possible to perform the year-round, large-scale and comprehensive studies of the marine environment and biota both in the Bay and in the river Don which is the most important river-way of the southern Russia. The investigations carried out in course of the past 15 years have permitted to solve many riddles existing in the Taganrog Bay paleo-history, to study formation of its bioproductivity and the features of its hydrological and hydro-biological regimes, to perform large-scale assessment of anthropogenic activity (pollution, fishing, poaching, shipping, etc.). Such a marine scientific research would be impossible but for the research vessel (R/V) "Professor Panov" named in honor of the outstanding Russian marine geologist and geo-morphologist, professor of the Leningrad and the Rostov universities D. G. Panov. During 15 years, due to the R/V "Professor Panov" more than 150 expeditions were performed that permitted to collect a significant amount of modern information which significantly expanded our notions on the Taganrog Bay and the Sea of Azov. The expeditions on board the R/V "Professor Panov" are complex and answer the purposes and problems of modern oceanology in the fields of hydrology, hydro-biology, hydro-chemistry, lithology, paleogeography, ornithology, etc.

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Introduction of species of genus Marenzelleria Mensil, 1896 (Polychaeta: Spionidae) in the Don River delta and Taganrog Bay

Cited by 7 publications

References 8 publications

The invasion of the genus Marenzelleria (Polychaeta: Spionidae) into the Don River mouth and the Taganrog Bay: morphological and genetic study

The invasion of the genus Marenzelleria (Polychaeta: Spionidae) into the Don River mouth and the Taganrog Bay: morphological and genetic study

Современное Состояние Голо- И Меропланктона Азовского Моря В Период Формирования Ледового Покрова

R/V “Professor Panov”: 15 Years of Marine Scientific Research

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