Biometry and diet of Percottus glenni Dybowski, 1877 found in stagnant water nearby Veliko Gradište (northeastern Serbia)
2019
Аутори:
Đikanović, VesnaSkorić, Stefan
Cvijanović, Gorčin
Nikolić, Dušan
Pucar, Milica
Nikčević, Miroslav
Mićković, Branislav
Остала ауторства
Đurović, MirkoТип документа:
Конференцијски прилог (Објављена верзија)
,
© 2019 by the Institute of Marine Biology, University of Montenegro
Метаподаци
Приказ свих података о документуАпстракт:
The aim of this study was to describe biometric and feeding characteristics of highly invasive species Perccottus glenii in the investigated locality. A total of 85 fish were electrofished in the drainage channel located at the vicinity of Veliko Gradište (northeastern
Serbia) and preserved in the alcohol solution. In the laboratory, fish were measured (TL,
± 0.01 mm; W, ± 0.01 g), otholits and digestive tracts were removed for age determination
and dietary analysis (stereomicroscope). Biometric analysis included length-frequency
distribution using 10 mm class intervals; determination of average length and weight for
each age group; lenght-weigth relationship; Fulton’s condition factor. Ingested organisms
were identified to the lowest reliable taxonomic level (mainly order) and counted. The
respective ranges of TL and W of examined fish were 35-140.7 mm and 0.5-40 g. Length
class 70.1-80.0 mm clearly dominated (24%). Four age groups were determined (0+-3+),
and their descriptive statistics is presented. The value of allometric coefficient for the
length-weight relationship (b= 3.068) indicated isometric growth. Fulton’s condition factor did not differ between age groups. Empty digestive tract was found in 2 specimens. A
total of 12 prey categories representing Ephemeroptera, Trichoptera, Odonata, Hemiptera,
Chironomidae, Coleoptera, Gastropoda, Hirudinea, Oligochaeta, Gammaraidae, unidentified and terrestrial insects were identified in the diet. Generally, the diet is entirely composed of aquatic invertebrates, as only one terrestrial insect was found. Obtained results
did not show clear difference in diet composition between age groups. However, analysis
have shown that the most diverse diet characterize 2+ age. By frequency, the insect larvae
were categories with highest participation regardless of age.
Финансирање / пројекти:
- Рибе као биоиндикатори стања квалитета отворених вода Србије (RS-MESTD-Basic Research (BR or ON)-173045)
- Мерење и моделирање физичких, хемијских, биолошких и морфодинамичких параметара река и водних акумулација (RS-MESTD-Technological Development (TD or TR)-37009)
У:
- Đurović M, editor. Book of Abstracts: International Conference "Adriatic Biodiversity Prorection - AdriBioPro 2019"; 2019 Apr 7-10; Kotor, Montenegro. Kotor: University of Montenegro, Institute of Marine Biology; 2019. p. 110.