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FOOD SPECTRUM OF THREE FISH SPECIES FROM THE MUGILIDAE FAMILY IN BRACKISH WATER ALONG THE BULGARIAN BLACK SEA COAST

Radoslava Bekova, Bogdan Prodanov

First published: 2022-11-15https://doi.org/10.5593/sgem2022/5.1/s20.025View metrics

Abstract

The food spectrum of three fish species from the Mugilidae family in different age groups was studied. The samples were collected in 2019 - 2021 from the river estuaries and the coastal brackish lakes at the Bulgarian Black Sea coast. The research aims to establish the food spectrum of mullets and thus make a connection between food components. The results show that the predominant groups in the stomachs of the three mullet species are detritus, zoobenthos (Rissoa sp. And Trochammina inflate - 64.28%) and macrophytes (Cladophoraceae family - 53.14%). Several potential toxic species were also found: Amphora coffeaeformis, Pseudo-nitzschia delicatissima, Pseudonitzschia seriata, Prorocentrum cordatum, E. pyriformis, P. minimum, Protoperidinium crassipes. For the first time along the Bulgarian Black Sea coast, in the stomachs of mullet fish, the presence of particles (less than 2.5 cm) from the category "Artificial polymers" was observed. The most common in the stomachs of mullet are macrophytes of the family Ulvaceae - 45.5%; family Cladophoraceae - 35.5%; from phytoplankton - Navicula spp (97.09%); of zoobenthos: Nematoda g.sp. - 49.3% and Trochammina inflate - 32.3%.

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Title
FOOD SPECTRUM OF THREE FISH SPECIES FROM THE MUGILIDAE FAMILY IN BRACKISH WATER ALONG THE BULGARIAN BLACK SEA COAST
Authors
Radoslava Bekova, Bogdan Prodanov
Proceedings
SGEM International Multidisciplinary Scientific GeoConference- EXPO Proceedings; 22nd SGEM International Multidisciplinary Scientific GeoConference Proceedings 2022
Publisher
STEF92 Technology
Year
2022
Pages
197-204
SWS Citekey
Bekova202220197204
ISSN
1314-2704
ISBN
978-619-7603-46-0
Language
en
Publication type
Conference Paper
Proceedings contents
Open official contents
Keywords
food spectrumBlack Sea coastbrackish waterMugil cephalusChelon auratusChelon saliens
References14

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