Acta Zoologica Academiae Scientiarum Hungaricae 58 (Supplement 1), pp. 1–2, 2012
Title: European Lakes under Environmental Stressors – Special Foreword
Author: Kováts, N.
Author's address: Department of Limnology, University of Pannonia, H-8200 Veszprém, Egyetem u. 10, Hungary, E-mail: kovats@almos.uni-pannon.hu
Download in
Portable Document Format (pdf)
Acta Zoologica Academiae Scientiarum Hungaricae 58 (Supplement 1), pp. 3–18, 2012
Title: Long-term development of fish assemblage in Lake Fenéki
(Kis-Balaton Water Protection System, Hungary): succession, invasion and stabilization
Authors: Ferincz, Á.1, Staszny, Á.2,3,
Ács, A.1, Weiperth, A.4,5,
Tátrai, I.3 and Paulovits, G.3
Authors' addresses: 1Department of Limnology, University of Pannonia, H-8200 Veszprém,
Egyetem u. 10, Hungary Abstract: This analysis of long-term (1992–2011) changes in the fish assemblage of the partially operating shallow, hypertrophic reservoir (Ingói-marsh, Lake Fenéki) was carried out on the occasion of the planned completion
of the impoundment. Samplings were performed in standard localities
with electrofishing. Three phases could be distinguished in fish fauna
development. The first phase is characterized by two allochtonous
marsh-species: the Mud-minnow (Umbra krameri) and the Crucian
carp (Carassius carassius), and was fast replaced by the second
invasion phase, characterized by the invasion of non-native gibel
carp (Carassius gibelio),and the third phase by the dominance
of roach (Rutilus rutilus) and bleak (Alburnus alburnus). The cumulative relative abundance of non-indigenous species reached a peak in the third year of the impoundment (1995; 56.4%), and remained high (>>50%) until 2001. The number of species, Shannon-Weaver diversity, and relative abundance of piscivorous species correlated positively with the age of reservoir. The shift of the fish fauna between the two phases was dynamic and dramatic, since the all previously dominant species disappeared within 4 years. The impact of invasive gibel carp is considered as high, because it has completely replaced its native relative (C. carassius), but in the other hand it only was able to delay the natural successive process, not completely transform it.
Key words: gibel carp, diversity, assemblage structure, shallow reservoir
Download in
Portable Document Format (pdf)
Acta Zoologica Academiae Scientiarum Hungaricae 58 (Supplement 1), pp. 19–27, 2012
Title: Scale-morphometry study to discriminate Gibel Carp (Carassius
gibelio) populations in the Balaton-Catchment (Hungary)
Authors: Staszny, Á.1,6, Ferincz, Á.2,
Weiperth, A.3,4, Havas, E.5, Urbányi,
B.1 and Paulovits, G.6
Authors' addresses: 1Department of Aquaculture, Szent István University, H-2100 Gödöllõ, Páter K. u. 1, Hungary Abstract: An examination was made to find out whether the shape of the scales
is suitable to discriminate gibel carp (Carassius gibelio Bloch, 1782) populations. The tools of landmark-based geometric morphometrics
were used. Fish were collected from four sampling areas. Three are
connected with each other (Kis-Balaton Water Protection System stage
I, Kis-Balaton Water Protection System stage II, Lake Balaton western
basin), while one is separated from the others (Nagyberek, located
on the Balaton-catchment). Two of the sampling areas (Kis-Balaton
Water Protection System stage I, Kis-Balaton Water Protection System
stage II) were hypertrophic, whilst the western basin of Lake Balaton
and Nagyberek was mesotrophic. Carassius gibelio populations
could be differentiated into three distinct groups based on their
scale morphology, with good reliability (97.3%). Populations of the
two stages of the Kis-Balaton Water Protection System could not be
separated. Based on the linkage relationships and environmental parameters, the results suggest that the environmental and the possible genetic effects on scale morphology separated with this method. Although the genetic differences were not proved, only assumed.
Key words: geometric morphometrics, landmarks, GLS, Canonical Variates Analysis, Discriminant Function Analysis
Download in
Portable Document Format (pdf)
Acta Zoologica Academiae Scientiarum Hungaricae 58 (Supplement 1), pp. 29–45, 2012
Title: Invasive mollusc, crustacean, fish and reptile species along the Hungarian stretch of the River Danube and some connected waters
Authors: Bódis, E.*, Borza, P., Potyó,
I., Puky, M., Weiperth, A. and Guti, G.
Authors' address: Danube Research Institute, Centre for Ecological Research, Hungarian Academy of Sciences H-2131 Göd, Jávorka Sándor u. 14. *E-mail: bodiserk@gmail.com
Abstract: The River Danube, connected to the Rhine catchment via the Rhine–Main–Danube
Canal, is part of a significant aquatic invasion corridor in Europe
between the North Sea and the Black Sea. Among its aquatic fauna molluscs,
crustaceans and fishes represent the most prominent groups of invaders
in terms of species number and biomass. The listed reptile species
is in the list of the 100 worst invasive species in the world. This
paper reviews available information about the arrival time, way of
introduction, distribution area, dominance in communities, ecosystem
functions, and impact on the native fauna along the Hungarian stretch
of the Danube of 43 non-indigenous species having arrived from several
continents as Africa, Asia, Europe, North America, or New Zealand.
Transport vectors that contribute to the introduction and the rapid
spread of alien species are river shipping, deliberate crayfish and
fish stocking, pet trade, release from aquaria, and food consumption.
The invasions of the studied species have a potential to alter the
structure and the function of Danubian ecosystems and create new biodiversity
and economic problems. Due to the international importance of the
River Danube, efforts should be made to prevent new invasions and
manage the existing invaders along the whole river.
Key words: invasion, River Danube, mollusc, crustacean, fish, reptile
Download in
Portable Document Format (pdf)
Acta Zoologica Academiae Scientiarum Hungaricae 58 (Supplement 1), pp. 47–61, 2012
Title: Microcrustacean (Cladocera, Copepoda) communities in artificial lakes in the region of the North Hungarian Mountains, with special reference to the adventive species
Authors: Vad, Cs. F.1,2, Horváth,
Zs.2,3, Kiss, K. T.4 and Ács,
É.4
Authors' address: 1Doctoral School of Environmental Sciences, Faculty of Science, Eötvös Loránd University, H-1117 Budapest, Pázmány Péter sétány 1/A, Hungary, E-mail: vad.csaba@gmail.com Abstract: Artificial lakes like reservoirs and pit lakes are among the most
frequent representatives of Hungarian standing waters. Although these
habitats maintain high biodiversity, investigations of them are sparse
worldwide. We studied the crustacean zooplankton of 23 artificial
lakes in the North Hungarian Mountains, which are mainly used as recreational
fish ponds and therefore highly affected by intensive fish stocking.
Our main aims were to investigate their species richness and composition,
together with the potential occurrence of adventive microcrustaceans.
53 microcrustacean species were found altogether, which proved to
be relatively high compared to studies from other regions. Moreover,
the species accumulation curves were not saturated, suggesting even
higher total regional species richness. One of our most important
results was the first finding of Hemidiaptomus hungaricus in
the territory of modern-day Hungary. Three adventive species were
found: Eurytemora velox, Daphnia ambigua and Pleuroxus
denticulatus, of which E. velox may be regarded as invasive,
as it was always the dominant zooplankter once it occurred in a lake,
while the two cladocerans were never found in high abundances. Our
results draw attention to the high biodiversity of these artificial
habitats, as well as to their role as stepping stones for adventive
microcrustacean species.
Key words: species richness, beta diversity, recreational fish pond, pit lake, reservoir, Hemidiaptomus hungaricus
2Department of Aquaculture, Szent István University, H-2103 Gödöllõ, Páter K. u. 1, Hungary
3Balaton Limnological Institute, Centre for Ecological Research, Hungarian Academy of Sciences, H-8237 Tihany, Klebelsberg K. u. 3, Hungary, E-mail: paulovits.gabor@okologia.mta.hu
4Department of Animal Taxonomy and Animal Ecology, Eötvös Loránd University, H-1117 Budapest, Pázmány P. stny 1/c, Hungary
5Danube Research Institute, Centre for Ecological Research, Hungarian Academy of Sciences, H-2131 Göd, Jávorka Sándor u. 14, Hungary
2Department of Limnology, University of Pannonia, H-8200 Veszprém, Egyetem u. 10, Hungary
3Department of Animal Taxonomy and Animal Ecology, Eötvös Loránd University, H-1117 Budapest, Pázmány P. u. 1/c, Hungary
4Danube Research Institute, Centre for Ecological Research, Hungarian Academy of Sciences, H-2131 Göd, Jávorka Sándor u. 14, Hungary
5Department of Zoology and Animal Ecology, Szent István University, H-2100 Gödöllõ, Páter K. u. 1, Hungary
6Balaton Limnological Institute, Centre for Ecological Research, Hungarian Academy of Sciences, H-8237 Tihany, Klebelsberg Kuno út 3, Hungary, E-mail: paulovits.gabor@okologia.mta.hu
2Department of Systematic Zoology and Ecology, Faculty of Science, Eötvös Loránd University H-1117 Budapest, Pázmány Péter sétány 1/C, Hungary
3Present address: WasserCluster Lunz, Dr. Carl Kupelwieser Promenade 5, AT-3293 Lunz am See, Austria
4Danube Research Institute, Centre for Ecological Research, Hungarian Academy of Sciences, H-2131 Göd, Jávorka Sándor u. 14, Hungary