Algae in the aquariums of the Center for fishery and biodiversity conservation of inland waters -Aquarium Kragujevac

Abstract

Algae are an integral part of the aquarium and it is impossible to get rid of them completely, most commonly they are unwanted phenomena. The increased concentration of phosphate and nitrates is responsible for the occurrence of excessive amounts of algae in aquariums. The appearance of algae is essentially influenced by the intensity of the light and the length ofthe aquarium's exposure to light. The research of the algae was carried out at the Center for Fishery and Biodiversity Conservation of Inland Waters - Aquarium Kragujevac, Faculty of Science. The survey covered a total of 18 aquariums (l marine, 4 tropical and 13 coldwater). The periphyton from all aquariums, was collected by scraping from glass, stones, by pipette along the sand surface, at plants and corals (in marine aquarium). In the marine aquarium, algae have been successively developed and belonged taxa were from: Cyanobacteria, Rhodophyta, Xanthophyta, Bacillariophyta, Phaeophyta and Chlorophyta. Immediately behind forming in the marine aquarium Licmophora sp. was observed and after that Trichodesmium erythraeum (Ebr.) ex Gom. was dominant. It covers almost the entire bottom of the aquarium, as well as the surface of many corals. All algae have formed macroscopic aggregations on different types of substrates (Vaucheria litorea Hofman ex C. Ag., and Phymatoliton sp. ). The results of the algae analysis at tropical aquarium indicate the presence taxa from: Cyanobacteria, Bacillariophyta and Chlorophyta. The most dominant species in the period of investigation of tropical aquariums is Achnanthidium exiguum (Grun.) Czarn. Algae from the genus Oedogonium and Cladophora was also dominate next to the species from Bacillariophyta. In coldwater aquariums, there was a different situation, it was detected taxa from Cyanobacteria, Xanthophyta, Bacillariophyta and Chlorophyta, but the most dominant taxa in the examined aquariums were Cyanobacteria. Algae in aquarium are an undesirable occurrence, if they have already appeared it could be removed by different methods (mechanical, biological and chemical).

Full text

Algae in the aquariums of the Center for fishery and biodiversity
conservation of inland waters - Aquarium Kragujevac
Snežana B. Simić, Aleksandra B. Mitrović, Nevena B. Đorđević
University of Kragujevac, Faculty of Science, Institute of Biology and Ecology, Serbia
Algae are an integral part of the aquarium and it is impossible to get
rid of them completely, most commonly they are unwanted
phenomena. The increased concentration of phosphate and nitrates
is responsible for the occurrence of excessive amounts of algae in
aquariums. The appearance of algae is essentially influenced by the
intensity of the light and the length of the aquarium's exposure to
light.
Introduction
The research of the algae was carried out at the Center for
Fishery and Biodiversity Conservation of Inland Waters -
Aquarium Kragujevac, Faculty of Science. The survey covered
a total of 18 aquariums (1 marine, 4 tropical and 13
coldwater). The periphyton from all aquariums, was collected
by scraping from glass, stones, by pipette along the sand
surface, at plants and corals (in marine aquarium).
The qualitative analysis was done by the light microscope
Motic BA310 with digital camera Bresser (9MP) and
MicroCamLab software.
Taxonomic identifications of algae was made using
appropriate identification keys: Komárek and Anagnostidis
(1998, 2005), Wehr and Sheath (2003) and Krizmanić(2009),
as well as using on-line identification keys
(http://galerie.sinicearasy.cz/galerie,http://dbmuseblade.colorado.edu/Dia
tomTwo/sbsac_site/key.html,
http://www.marinespecies.org/aphia.php?p=search).
Material and methods
Results
Acknowledgements:
This investigation was supported by the Ministry of Education, Science and Technological Development of the Republic of Serbia –Project Grants III 43002 TP 31011
The International Conference Adriatic Biodiversity Protection –AdriBioPro2019, Kotor Montenegro, 7 –11. April 2019.
In the marine aquarium, algae have been successively developed
and belonged taxa were from: Cyanobacteria, Rhodophyta,
Xanthophyta, Bacillariophyta, Phaeophyta and Chlorophyta.
Immediately behind forming in the marine aquarium Licmophora
sp. was observed and after that Trichodesmium erythraeum (Ehr.) ex
Gom. was dominant. It covers almost the entire bottom of the
aquarium, as well as the surface of many corals. All algae have
formed macroscopic aggregations on different types of substrates
(Vaucheria litorea Hofman ex C. Ag., Phymatoliton sp. and
Ectocarpus sp.).
THE MARINE
AQUARIUM
THE TROPICAL
AQUARIUMS
THE COLDWATER
AQUARIUMS
Cyanobacteria
Bacillariophyta
Chlorophyta
Xanthophyta
Cyanobacteria, Bacillariophyta
and Chlorophyta
Achnanthidium exiguum
Cladophora sp.
Oedogonium sp.
Cyanobacteria, Rhodophyta,
Xanthophyta, Bacillariophyta,
Phaeophyta and Chlorophyta
Licmophora sp.
Trichodesmium erythraeum
Vaucheria litorea
Phymatoliton sp.
The results of the algae analysis at tropical aquariums indicate the presence taxa from: Cyanobacteria, Bacillariophyta
and Chlorophyta. The most dominant species in the period of investigation of tropical aquariums is Achnanthidium
exiguum (Grun.) Czarnecki. Algae from the genus Oedogonium and Cladophora was also dominate next to the species
from Bacillariophyta.
In coldwater aquariums, there was a different situation, it was detected taxa from Cyanobacteria, Xanthophyta,
Bacillariophyta and Chlorophyta, but the most dominant taxa in the examined aquariums were Cyanobacteria.
Algae in aquarium are an undesirable occurrence, if they have already appeared it could be removed by different methods
(mechanical, biological and chemical).
Fig. 1. Dominant taxa in the marine aquarium
a), b) Licmophora sp., c), d) Trichodesmium erythraeum
Fig. 2. Dominant taxa in the tropical aquarium
a) Cladophora aegagropila, b) Achnanthidium exiguum, c) Oedogonium sp.
Fig. 3. Dominant taxa in the coldwater aquarium
a) Navicula sp., b) Cocconeis placentula, c) Phormidium sp., d) Achnanthidium sp.
a)
b)
c)
d)
a)
b)
c)
a) b)
c) d)