A Skeletal Deformity of Northern Pike (Esox lucius) Related to Pulp Mill Effluents

1992 ◽  
Vol 49 (1) ◽  
pp. 166-172 ◽  
Author(s):  
Eric Lindesjöö ◽  
Jan Thulin
Keyword(s):  
Anterior Part ◽  
Pulp Mill ◽  
Northern Pike ◽  
Esox Lucius ◽  
Effluent Treatment ◽  
Pulp Mills ◽  
Skeletal Deformity ◽  
Degree Of Deformation ◽  
Pike Esox Lucius ◽  
Pulp Mill Effluents

Increased prevalences of a skeletal deformity affecting the skull of northern pike (Esox lucius) were related to three pulp mills in the Gulf of Bothnia, Sweden. At one mill the later disappearance of the disease, from an original prevalence of 35%, coincided with a marked improvement of effluent treatment. A typical deformed pike showed distinct upward bending of the jaws. The disease always affected the anterior part of the parasphenoid and the frontal bones. In the most severe cases the nasal, vomer, and medial rostral were also deformed. The degree of deformation was expressed as the ratio between two measurements made on the skull.

The Onset of Lignin-Modifying Enzymes, Decrease of AOX and Color Removal by White-Rot Fungi Grown on Bleach Plant Effluents

1991 ◽  
Vol 24 (3-4) ◽  
pp. 189-198 ◽  
Author(s):  
V. P. Lankinen ◽  
M. M. Inkeröinen ◽  
J. Pellinen ◽  
A. I. Hatakka
Keyword(s):  
Lignin Peroxidase ◽  
Active Form ◽  
White Rot Fungi ◽  
Pulp Mill ◽  
Color Removal ◽  
Effluent Treatment ◽  
White Rot ◽  
White Rot Fungus ◽  
Lignin Peroxidases ◽  
Pulp Mill Effluents

Decrease of adsorbable organic chlorine (AOX) is becoming the most important criterion for the efficiency of pulp mill effluent treatment in the 1990s. Two methods, designated MYCOR and MYCOPOR which utilize the white-rot fungus Phanerochaete chrysosporium have earlier been developed for the color removal of pulp mill effluents, but the processes have also a capacity to decrease the amount of chlorinated organic compounds. Lignin peroxidases (ligninases) produced by P. chrvsosporium may dechlorinate chlorinated phenols. In this work possibilities to use selected white-rot fungi in the treatment of E1-stage bleach plant effluent were studied. Phlebia radiata. Phanerochaete chrvsosporium and Merulius (Phlebia) tremellosus were compared in shake flasks for their ability to produce laccase, lignin peroxidase(s) and manganese-dependent peroxidase(s) and to remove color from a medium containing effluent. Softwood bleaching effluents were treated by carrier-immobilized P. radiata in 2 1 bioreactors and a 10 1 BiostatR -fermentor. Dechlorination was followed using Cl ion and AOX determinations. All fungi removed the color of the effluent. In P. radiata cultivations AOX decrease was ca. 4 mg l−1 in one day. Apparent lignin peroxidase activities as determined by veratryl alcohol oxidation method were negligible or zero in a medium with AOX content of ca. 60 mg l−1, prepared using about 20 % (v/v) of softwood effluent. However, the purification of extracellular enzymes implied that large amounts of lignin peroxidases were present in the medium and, after the purification, in active form. Enzyme proteins were separated using anion exchange chromatography, and they were further characterized by electrophoresis (SDS-PAGE) to reveal the kind of enzymes that were present during AOX decrease and color removal. The most characteristic lignin peroxidase isoenzymes in effluent media were LiP2 and LiP3.

Catchments affect growth rate of Northern Pike, Esox lucius, in subarctic lakes

2021 ◽  
Vol 83 (3) ◽  
Author(s):  
Mehdi Moslemi-Aqdam ◽  
George Low ◽  
Mike Low ◽  
Brian A. Branfireun ◽  
Heidi K. Swanson
Keyword(s):  
Growth Rate ◽  
Northern Pike ◽  
Esox Lucius ◽  
Subarctic Lakes ◽  
Pike Esox Lucius

Temporal change estimation of mercury concentrations in northern pike (Esox lucius L.) in Swedish lakes

Chemosphere ◽  
2012 ◽  
Vol 86 (5) ◽  
pp. 439-445 ◽  
Author(s):  
Staffan Åkerblom ◽  
Mats Nilsson ◽  
Jun Yu ◽  
Bo Ranneby ◽  
Kjell Johansson
Keyword(s):  
Temporal Change ◽  
Northern Pike ◽  
Esox Lucius ◽  
Pike Esox Lucius

Effects of Liming on the Distribution of Cadmium in Water, Sediment, and Organisms in a Swedish Lake

1988 ◽  
Vol 45 (7) ◽  
pp. 1154-1162 ◽  
Author(s):  
Paul Andersson ◽  
Hans Borg
Keyword(s):  
Lake Water ◽  
Cadmium Concentration ◽  
Northern Pike ◽  
Esox Lucius ◽  
Suspended Particles ◽  
Fish Liver ◽  
Free Swimming ◽  
Pike Esox Lucius ◽  
Insect Larva ◽  
Before And After

We studied the cadmium concentrations in water, sediment, suspended particles, a free-swimming insect larva (Chaoborus), a sediment-bound insect larva (Chironomus), and liver of northern pike (Esox lucius) before and after liming operations in Lake Långsjön, Sweden. In accordance with the higher pH levels obtained in the lake water after the limings, cadmium concentration decreased in the water but increased in the sediment. Cadmium concentration in fish liver and Chironomus decreased after the limings whereas the concentration in Chaoborus larvae increased after the first liming. Possible mechanisms are discussed.

Individual specialization and trophic adaptability of northern pike ( Esox lucius ): an isotope and dietary analysis

Oecologia ◽  
1999 ◽  
Vol 120 (3) ◽  
pp. 386-396 ◽  
Author(s):  
Catherine P. Beaudoin ◽  
William M. Tonn ◽  
Ellie E. Prepas ◽  
Leonard I. Wassenaar
Keyword(s):  
Northern Pike ◽  
Esox Lucius ◽  
Dietary Analysis ◽  
Individual Specialization ◽  
Pike Esox Lucius

Catch‐related and genetic outcome of adult northern pike Esox lucius stocking in a large river system

2018 ◽  
Vol 93 (6) ◽  
pp. 1107-1112 ◽  
Author(s):  
Nicolas Guillerault ◽  
Géraldine Loot ◽  
Simon Blanchet ◽  
Frederic Santoul
Keyword(s):  
River System ◽  
Northern Pike ◽  
Esox Lucius ◽  
Large River ◽  
Pike Esox Lucius
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