Zh. P. Selifonova1,2,*, O. N. Burkatsky3, S. V. Baykin3, E. Z. Samyshev2
1 Admiral Ushakov Maritime State University, Novorossiysk, Russia
2 A.O. Kovalevsky Institute of Biology of the Southern Seas, Russian Academy of Sciences, Sevastopol, Russia
3 Black Sea-Azov Directorate on Technical Ensuring Supervision on the Sea, Novorossiysk, Russia
* e-mail: selifa@mail.ru
Abstract
The alien polychaete worm Streblospio gynobranchiata is classified as a harmful vesatile indicator of contamination. This species first appeared in the Black sea in Novorossiysk port in 2001. Later, it was found in different areas of the southern inland seas of Eurasia. The purpose of the paper is to study the features of modern distribution and abundance dynamics of the recent invasive species S. gynobranchiata in the Novorossiysk Bay. The macrozoobenthos sampling was carried out with a Petersen grab (0.04 m2 capture area) in November 2018, February, March and June 2019. Samples of bottom sediment were thoroughly washed through a sieve with the mesh size of 0.5 mm and fixed with 4 % formaldehyde solution. The studies have shown that the population of S. gynobranchiata has spread over the entire area of the bottom of the Novorossiysk port over the past 10 years. It averaged 17.1–26.9 % of the total density and 23.5–40 % of the total biomass of the polychaete community. Average density of species varied from 33 to 132 ind./m2, biomass 0.03–0.19 g/m2. The peaks of density of invasive species (132 ± 43.4 ind./m2) and polychaete community (759 ± 255.8 ind./m2) were revealed in February. The abundance of the species in the port area was two to three times higher than that of the Eastern pier. Long-term analysis of the state of the macrozoobenthos of the Novorossiysk port revealed a marked degradation of the structure of the bottom fauna: replacement of the mollusk community with the community of the most stable polychaete species.
Keywords
density, biomass, distribution, invasive species, polychaete, Streblospio gynobranchiata
Acknowledgments
The research is performed under state order No. АААА-А18-118021490093-4 of A. O. Kovalevsky Institute of Biology of the Southern Seas of RAS on topic “Functional, metabolic and toxicological aspects of the existence of hydrobionts and their populations in biotopes with different physical and chemical regime”.
For citation
Selifonova, Zh.P., Burkatsky, O.N., Baykin, S.V. and Samyshev, E.Z., 2020. Peculiarities of Distribution in the Novorossiysk Bay of Recent Invasive Species Streblospio Gynobranchiata Rice Et Levin (Polychaeta : Spionidae). Ecological Safety of Coastal and Shelf Zones of Sea, (2), pp. 131–139. doi:10.22449/2413-5577-2020-2-131-139 (in Russian).
DOI
10.22449/2413-5577-2020-2-131-139
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