Concerns in evaluation of the state and conservation of marine elasmobranches in the Black sea

About the authors:

Irina I. Rudneva, Dr. Sci. (Biol.), Professor, Senior Researcher, A.O. Kovalevsky Institute of Biology of the Southern Seas (Sevastopol)
Alexander G. Selyukov, Dr. Sci. (Biol.), Professor, Department of Zoology and Evolution Ecology of Animals, University of Tyumen; ags-bios@yandex.ru

Abstract:

The status of natural populations of wild marine elasmobranch, whose number is estimated as 500 species, appears underexplored, the information on them being absent in certain cases. By contrast, their number and biodiversity are extremely decreasing due to climate changes, marine pollution resulting from human activities, and overfishing. The state of health of those species is also deteriorating which affects populations´ dynamics. Therefore, the research of marine elasmobranches is vital and requires the development of adequate methods and approaches to the evaluation of their wild populations. The article outlines contemporary approaches to the evaluation of the status of three Black Sea elasmobranches. The study is aimed at the development of measures to protect the species, to organize their optimal catch as well as to close fishing of certain species that are rare or at risk of extinction.

References:

1. Harms, C., Ross, T., Segars, A. Plasma Biochemistry Reference Values of Wild

Bonnethead Sharks, Sphyrna tiburo. Veterinary Clinical Pathology. 2002. Vol. 1. № 3.

Pp. 1–5.

2. Treberg, J.R., Martin, A.R., Driedzic, W.R. Muscle Enzyme Activities in a Deep-Sea

Squaloid Shark, Centroscyllium fabricii, Compared With Its Shallow-Living Relative, Squalus

acanthias. Journal of Experimental Zoology. 2003. Vol. 300A. Pp. 133-139.

3. Geisleichter, J., Cortes, E., Manire, Ch.A., Hueter, R.E., and Musick, J.A. Evaluation of toxicity of oxytetracycline on growth of captive nurse sharks, Ginglymostoma cirratum.

Fishes Bulletin. 1998. Vol. 98. Pp. 624-627.

4. Haman, K.H., Norton, T.M., Thomas, A.C., Dove, A.D.M., Tseng, F. Baseline health

parameters and species comparisons among free-ranging Atlantic sharpnose (Rhizoprionodon

terraenovae), bonnethead (Sphyrna tiburo) and spiny dogfish (Squalus acanthias) sharks in

Georgia, Florida, and Washington, USA. Journal of Wildlife Diseases. 2012. Vol. 48. № 2.

Pp. 205-306.

5. URL: http://www.fao.org/news/story/ru/item/171982/icode/

6. Mathews, T., Fisher, N.S. Dominance of dietary intake of metal in marine elasmobranchs

and teleost fish. Science of the Total Environment. 2009. Vol. 407. Pp. 5156-5161.

7. Rudneva, I.I. Ecological and phylogenetic peculiarities of lipid composition and lipid

peroxidation in the Black Sea teleost and elasmobranch fish species. Zhurnal evoliutsionnoi

biokhimii i fiziologii — Journal of Evolutional Biochemistry and Physiology. 1998.

Vol. 34. Pp. 310-318 (in Russian).

8. Rudneva, I.I. Blood antioxidant system of Black Sea elasmobranch and teleosts.

Comparative Biochemistry and Physiology. 1997. Part C. Vol. 118. Pp. 255-260.

(in Russian).

9. Rudneva, I.I., Antioxidant defense in marine fish and its relationship to their ecological

status. In: Fish Ecology / Ed. Dempsy S.P. NY: Nova Science Publishers Inc., 2012. Pp. 31-59.

10. Turcozy, N.J., Laurenson, L.B., Allinson, G., Nishikawa, M., Lambert, D.F., Smith, C.,

Cottier, J.P.E., Irvine, B., Stagnitti, F. Observations on metal concentrations in three species of shark (Deania calcea, Centroscymnus crepidater and Centroscymnus owstoni) from

Southeastern Australian Waters. Journal of Agricultural and Food Chemistry. 2000. Vol. 48.

Pp. 4357-4364.

11. Taguchi, M., Yasuda, K., Toda, Sh., Shimizu, M.. Study of metal contents

of elasmobranch fishes: Part 1. Metal concentrations in the muscle of a dogfish Squalus

mitsukurii. Marine Environmental Research. 1979. Vol. 2. Pp. 239-249.

12. Marcovecchio, J.E., Moreno, V.J., Perez, A. Metal accumulation in tissues of shark from the Bahia Blanca estuary, Argentina. Marine Environmental Research. 1991. Vol. 31. Pp. 263-274.

13. Rudneva, I.I., Kuzminova, N.S., Omelchenko, S.O. Trace elements and nitrozamines

concentration in Black Sea elasmobranch species. Asian Journal of Biological and Life

Sciences. 2012. Vol. 1. № 3 1. Pp. 51-57.

14. Gordina, A.D., Tkach, A.V., Sevrikova, S.D. Response of ichthyoplankton to the

anthropogenic impact of port zones in the Black Sea. Gidrobiologiia — Hydrobiology. 1999.

Vol. 35. Pp. 10-15. (in Russian).

15. Svetovidov, A.N. Ryby Chernogo moria [Black Sea Fish]. Leningrad: Nauka, 1964. 552 p. (in Russian).

16. Silkina, N.I., Mikriakov, D.V., Mikriakov, V.R. Impact of anthropogrnic pollution on

several parameters of immune response and oxidative processes in the liver of the dog shark

Squalus acanthias Linnaeus, 1758 (Pisces: Squalidae), inhabiting the coastal waters of the

Black Sea. Biologiia moria — Sea Biology. 2014. Vol. 40. Pp. 319-323. (in Russian).

17. Andreeva, A.M., Fedorov, R.A. Peculiarities of low molecular weight proteins

organization in the blood plasma and tissue liquid of skate Dasyatis pastinaca (Chondrichthyes:

Trygonidae). Biologiia moria — Sea Biology. 2010. Vol. 36. № 6. Pp. 460-462. (in Russian).

18. Rudneva, I.I., Dorokhova, I.I., Skuratovskaya, E.N., Kuzminova, N.S. Comparative studies of hepatic and blood biomarkers of three species of Black Sea elasmobranchs. International Journal of Marine Science. 2014. Vol. 4. Pp. 1-14.

19. Seliukov, A.G. Morfofunktsional'nyi status ryb Ob'-Irtyshskogo basseina v sovremennykh

usloviiakh [Morphologial and Functional State of Fish in the Ob-Irtysh Basin under Modern Conditions]. Tyumen, 2007. 184 p. (in Russian).

20. Seliukov, A.G. Morphofunctional changes of fish of the medium and low Ob river under the increase of anthropogenic impact. Voprosy ikhtiologii — Problems of Ichthyology. 2012.

Vol. 52. № 5. Pp. 581-600. (in Russian).

21. Seliukov, A.G., Shuman, L.A., Nekrasov, I.S. Condition of gonads of salmonids

in Sub-Arctic lakes of Yamal and Gydan. Vestnik Tiumenskogo gosudarstvennogo

universiteta — Tyumen State University Herald. 2012. Vol. 52. № 6. Pp. 31-40. (in Russian).

22. Oven, L.S. Spetsifika razvitiia polovykh kletok morskikh ryb v period

razmnozheniia kak pokazatel' tipa neresta i reaktsii na usloviia sredy obitaniia [Specifics of Gamets Development in Marine Fish during Spawning as the Marker of the Type of Spawning and Reaction to Environment]. Moscow, 2004. 188 p. (in Russian).