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The water mite fauna (Hydrachnidia) from three springs in Macedonia

100%

Zawal A., Stojanovski S., Dzierzgowska K.

Zeszyty Naukowe. Acta Biologica. Uniwersytet Szczeciński

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2011

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tom 18

The results of a faunistic survey of water mites from five spring areas in Macedonia are presented. Only in three investigated areas were water mites found. 13 species were identi fied, 2 of which ( Lebertia longiseta and Hygrobates setosus ) are reported as new for the Balkan Peninsula, and 1 ( Lebertia porosa ) as a new for Macedonia. The ecological significance of the researches is briefly discussed

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Invertebrate fauna of the Minina River, taking into account environmental factors

80%

Stryjecki R.

Zeszyty Naukowe. Acta Biologica. Uniwersytet Szczeciński

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2011

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tom 18

A total of 5,613 macroinvertebrate specimens, belonging to 43 taxa of varying systematic positions, were collected at four study sites in the Minina River. Dominant in the material collected were Gammarus sp. (33.9%), Chironomidae larvae (30.4%) and Ephemera sp. larvae (7.0%). More individuals (3,551) and taxa (39) were caught in the lentic zone than in the lotic zone (2,062 specimens and 30 taxa). The biological diversity index ranged from 1.57 to 3.14 within the sites and from 1.04 to 3.77 within habitats (zones of the river). The taxonomic composition and the abundance of the fauna were mainly in fluenced by biotic factors (e.g. amount of aquatic vegetation) and abiotic factors (e.g. water current and type of bottom sediment), while human impact (presence of hydraulic structures, straightening of the river bed) did not significantly affect the fauna.

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Aquatic mollusc fauna of the Ohre River - an important site of Unio crassus Philipsson, 1788 (Bivalvia: Unionidae) in northwestern Bohemia

80%

Beran L.

Folia Malacologica

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2015

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tom 23

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nr 4

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Alterations of the bottom macrofauna of a mountain stream [Wolosaty stream, Bieszczady National Park, Southeastern Poland] caused by a tourist hotel

80%

Kukula K.

Acta Hydrobiologica

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1998

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tom 40

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nr 4

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Effect of single superphosphate fertilizer on survival and respiratory dynamics of Nile Tilapia, Oreochromis niloticus [Actinopterygii: Perciformes: Cichlidae]

70%

Omoregie E., Ajima M. N. O., Keke R. I., Wieski K.

Acta Ichthyologica et Piscatoria

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2009

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tom 39

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nr 2

103-110

Background. Increasing global usage of inorganic fertilizers, including phosphate-based fertilizers has its negative consequences on the aquatic environment. Effects of single superphosphate fertilizer (SPF) remain unknown, particularly its influence on the respiratory dynamics of fish under continuous exposure. We investigated the effects of single SPF on the survival and respiratory dynamics of Nile tilapia, Oreochromis niloticus, under laboratory conditions. Materials and Methods. Nile tilapia fingerlings (of mixed sex) (5.40 . 0.03 g) were exposed to various concentrations of the fertilizer in five treatment regimes (in triplicate): 0.88, 1.75, 3.50, 7.00, 14.00 g . L–1 (and 0.00 g . L–1 for control). Each replicate was carried out in a 30-L circular plastic tank based on 20 fingerlings. The study involved: the mortality estimation, the oxygen consumption, the histopathological effects on fish gills, and the activities of lactate dehydrogenase (LDH), alcohol dehydrogenase (ADH) in liver of fish exposed to sublethal concentrations (0.44, 0.22, 0.11, 0.06, and 0.03 g . L–1) of single SPF for eight weeks under laboratory conditions. Results. Acute concentrations of SPF had serious adverse effects on mortality, oxygen consumption and opercular ventilation rates of exposed fish. All variables showed a dose-dependency. A mean value of 96-h LC50 of the SPF to the test fish was calculated to be 3.76 g . L–1. At various acute concentrations, oedema and hyperplasia of gill lamellae were observed in exposed fish. Exposure of the fish to sublethal concentrations of the SPF resulted in reduction in the levels of lactate dehydrogenase and alcohol dehydrogenase activities in liver. Conclusion. Concentrations of SPF in natural water bodies are deleterious to aquatic fauna. With rapid global economic development and need for more food production, pollution from agricultural fertilizers remains a major threat to the aquatic ecosystem. Therefore it is ultimately important that a balance is struck between achieving economic excellence and environmental protection through good pollution management strategies.

Ograniczanie wyników

2 Zeszyty Naukowe. Acta Biologica. Uniwersytet Szczeciński

1 Acta Hydrobiologica

1 Acta Ichthyologica et Piscatoria

1 Folia Malacologica

1 Ajima M. N. O.

1 Beran L.

1 Dzierzgowska K.

1 Keke R. I.

1 Kukula K.

1 Omoregie E.

1 Stojanovski S.

1 Stryjecki R.

1 Wieski K.

1 Zawal A.

1 2015

2 2011

1 2009

1 1998

The water mite fauna (Hydrachnidia) from three springs in Macedonia

Invertebrate fauna of the Minina River, taking into account environmental factors

Aquatic mollusc fauna of the Ohre River - an important site of Unio crassus Philipsson, 1788 (Bivalvia: Unionidae) in northwestern Bohemia

Alterations of the bottom macrofauna of a mountain stream [Wolosaty stream, Bieszczady National Park, Southeastern Poland] caused by a tourist hotel

Effect of single superphosphate fertilizer on survival and respiratory dynamics of Nile Tilapia, Oreochromis niloticus [Actinopterygii: Perciformes: Cichlidae]