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Dissertations / Theses on the topic 'Fish Mortality'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Wang, Man-ping. "Fish consumption and mortality in Hong Kong Chinese : the lifestyle and mortality study (LIMOR) /." View the Table of Contents & Abstract, 2007. http://sunzi.lib.hku.hk/hkuto/record/B38588432.

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2

Soares, Silvia. "Fish farm health evaluation : interpretation of site mortality records." Thesis, University of Stirling, 2012. http://hdl.handle.net/1893/9268.

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In aquaculture worldwide, diseases are a significant constraint to economic expansion. The Scottish salmonid industry has experienced many cycles of development, with episodes of little or negative profitability caused by excess of production, and times of crisis due to different disease problems. In Scotland, the early implementation of regulation largely contributed to the control of infectious disease outbreaks. The recent Chilean outbreak of infectious salmon anaemia (ISA) illustrated the threats and the impacts of disease in the aquaculture industry and the importance of implementing good

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3

Wang, Man-ping, and 王文炳. "Fish consumption and mortality in Hong Kong Chinese: the lifestyle and mortality study (LIMOR)." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B39724621.

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4

Ellis, Timothy Roberts. "Production and mortality of early life stages of flatfishes." Thesis, University of Liverpool, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386805.

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Plankton sampling established the presence of a plaice spawning ground off the west coast of the Isle of Man in the Irish Sea. The total production of stage I plaice eggs from this spawning ground in 1993 was estimated at 7.6 x 101 • Theoretically this spawning ground could supply the local nurseries with plaice larvae. Spawning was most intense in March, before the peak in the plankton bloom in the Irish Sea. Predation on plaice eggs by clupeids was studied in March in an area of high plaice egg density to the east of the Isle of Man. Fish eggs formed the bulk of the stomach contents of sprat

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5

Alhossaini, Mohsen S. M. H. "Growth and mortality of 0-group plaice, Pleuronectes platessa L., using otolith microstructure." Thesis, Bangor University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.352946.

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6

Breen, Michael. "Investigating the mortality of fish escaping from towed fishing gears - a critical analysis." Thesis, University of Aberdeen, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.493592.

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Studies investigating the survival of fish escaping from towed fishing gears have demonstrated a significant mortality. The aim of this thesis was to address criticisms of these studies and establish whether the estimates of escape mortality were biased. This critical analysis focused on the work by Fisheries Research Services, as they were considered to have developed benchmark techniques in this field.

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7

Williamson, Craig W. "Tournament-associated mortality and the effects of culling in Wisconsin black bass (Micropterus spp.) tournaments /." Link to full text, 2007. http://epapers.uwsp.edu/thesis/2007/williamson.pdf.

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Thesis (M.S.)--University of Wisconsin--Stevens Point, 2007.<br>Submitted in partial fulfillment of the requirements of the degree Master of Science in Natural Resources, College of Natural Resources. Includes bibliographical references (leaves 75-81).

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8

Adams, Michael J. "Experimental analysis of tadpole mortality factors : effects of bullfrogs and exotic fish in the Puget Lowlands, Washington /." Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/5507.

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9

Subasinghe, R. P. "Studies on the effects of environmental factors and selected pathogens on morbidity and mortality of hatchery reared Oreochromis mossambicus (Peters) eggs and fry." Thesis, University of Stirling, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375402.

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10

Sclafani, Matthew. "The role of osmoregulation and nutrition as determinants of buoyancy and short-term mortality of marine fish larvae." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0033/NQ64664.pdf.

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11

Kulakkattolickal, Augusthy Thevasia. "The effects of surface access and dissolved oxygen levels on survival time of a water-breathing and an air-breathing fish species exposed to a plant toxin (Croton tiglium, Euphorbiaceae, seed extract) /." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66223.

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12

Hedström, Per. "Climate change impacts on production and dynamics of fish populations." Doctoral thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-128007.

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Ongoing climate change is predicted to increase water temperatures and export of terrestrial dissolved matter (TDOM) to aquatic ecosystems influencing ecosystem productivity, food web dynamics and production of top consumers. Ecosystem productivity is mainly determined by the rates of primary production (GPP) in turn controlled by nutrients, light availability and temperature, while temperature alone affect vital rates like consumption and metabolic rates and maintenance requirements of consumers. Increased level of TDOM causes brownification of water which may cause light limitation in algae

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13

Rylander, Lars. "Dietary exposure to persistent organochlorine compounds and health effects in women and their infants epidemiological studies on birthweight, cancer incidence and mortality /." Lund : Dept. of Occupational and Environmental Medicine, Institute of Laboratory Medicine, Lund University, 1997. http://books.google.com/books?id=rgFrAAAAMAAJ.

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14

Rydell, Joseph J. "The influence of abiotic factors on gill-net catch rates and the evaluation of mortality rates for yellow perch in southern Lake Michigan." Virtual Press, 2008. http://liblink.bsu.edu/uhtbin/catkey/1391675.

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I determined differences in yellow perch gill-net catch-per-unit-effort (CPUE) at two depths (10 and 15 m) in the Indiana waters of Lake Michigan during June, July, and August from 1989 to 2006. I evaluated the abiotic factors of water temperature, water clarity, wave height, and wind direction to determine whether they influence the differences in yellow perch CPUE. This study suggests that yellow perch in southern Lake Michigan may select habitat based on water temperature during the summer, moving in response to thermocline changes. We also evaluated mortality rates for two distinct periods

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15

Sauls, Beverly J. "Relative Survival of Gags Mycteroperca microlepis Released Within a Recreational Hook-and-Line Fishery: Application of the Cox Regression Model to Control for Heterogeneity in a Large-Scale Mark-Recapture Study." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4940.

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The objectives of this study were to measure injuries and impairments directly observed from gags Mycteroperca microlepis caught and released within a large-scale recreational fishery, develop methods that may be used to rapidly assess the condition of reef fish discards, and estimate the total portion of discards in the fishery that suffer latent mortality. Fishery observers were placed on for-hire charter and headboat vessels operating in the Gulf of Mexico from June 2009 through December 2012 to directly observe reef fishes as they were caught by recreational anglers fishing with hook-and-l

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16

Barroco, Lorenzo Soriano Antonaccio. "Taxa de mortalidade relacionada à prática da pesca esportiva do cichla spp. na região do médio Rio Negro, Amazonas, Brasil." Universidade Federal do Amazonas, 2013. http://tede.ufam.edu.br/handle/tede/2746.

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Made available in DSpace on 2015-04-11T13:56:28Z (GMT). No. of bitstreams: 1 Lorenzo Barroco.pdf: 722257 bytes, checksum: 356df29a6c95a7e03f6ab0ca96899495 (MD5) Previous issue date: 2013-05-29<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The expansion of recreational fishing in Brazil started in the 1990 s, when more and more people came to the Amazon in search of peacock bass (Cichla spp.). The behavior of this cichlid, which attacks lures, is especially exciting for anglers. The middle Negro River has become one of the most popular areas of sport fishing of the worl

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17

LAGUZZI, FEDERICA. "DIETARY HABITS AND CARDIOVASCULAR DISEASE." Doctoral thesis, Università degli Studi di Milano, 2015. http://hdl.handle.net/2434/257427.

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BACKGROUND AND AIM: Diet, in particular dietary fats, and cardiovascular disease (CVD) are closely related. Dietary fats might be captured by measuring blood fatty acid profiles. The role of diet as well as the role of blood fatty acid (FA) levels, in CVD aetiology is still uncertain. Aims of this thesis were to investigate in a large cohort of 60-year-old Swedish men and women: 1) The association between self-reported dietary intake, with a specific focus on foods rich in fat, and selected serum cholesterol ester FAs (Project I); 2) The relation between self-reported intake of specific types

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18

Calla, Simon. "Des poissons, des hommes et des rivières : sociologie d'un problème de pollution en Franche-Comté." Thesis, Bourgogne Franche-Comté, 2019. http://www.theses.fr/2019UBFCC020.

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Entre les années 2009 et 2015, plusieurs rivières du département du Doubs ont été le théâtre d’épisodes de mortalité piscicole. Résumant les incertitudes et les inquiétudes à l’égard de la pérennité des pratiques de pêche et de potentiels risques sanitaires, ce phénomène a été le plus souvent expliqué par « la pollution des rivières ». Or, il semble qu’une telle qualification jette un voile sur les tentatives de solutions mises en place par les acteurs. En revenant sur les différentes enquêtes à travers lesquelles les acteurs concernés par cette situation mobilisent d

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19

SEGNALINI, MARIA. "Caratterizzazione del bacino del Mediterraneo in funzione dell'indice bioclimatico "Temperature Humidity Index" (THI) e relazioni tra THI e mortalità nella bovina da latte." Doctoral thesis, Università Cattolica del Sacro Cuore, 2012. http://hdl.handle.net/10280/1305.

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Condizioni meteorologiche e clima influenzano fortemente il settore delle produzioni animali. Lo stress da caldo determina una significativa riduzione dell'attività metabolica, della produzione, della capacità riproduttiva e una maggiore predisposizione alle malattie. Nel contesto biologico, la temperatura dell’aria è sicuramente considerata il principale fattore di stress, tuttavia, un’elevata umidità peggiora l'effetto della temperatura riducendo le perdite di calore per evaporazione e ostacolando quindi l’eliminazione del calore in eccesso. Scopi principali della ricerca sono stati la carat

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20

SEGNALINI, MARIA. "Caratterizzazione del bacino del Mediterraneo in funzione dell'indice bioclimatico "Temperature Humidity Index" (THI) e relazioni tra THI e mortalità nella bovina da latte." Doctoral thesis, Università Cattolica del Sacro Cuore, 2012. http://hdl.handle.net/10280/1305.

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Condizioni meteorologiche e clima influenzano fortemente il settore delle produzioni animali. Lo stress da caldo determina una significativa riduzione dell'attività metabolica, della produzione, della capacità riproduttiva e una maggiore predisposizione alle malattie. Nel contesto biologico, la temperatura dell’aria è sicuramente considerata il principale fattore di stress, tuttavia, un’elevata umidità peggiora l'effetto della temperatura riducendo le perdite di calore per evaporazione e ostacolando quindi l’eliminazione del calore in eccesso. Scopi principali della ricerca sono stati la carat

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21

Marti, Marimon Maria Eugenia. "3D genome conformation and gene expression in fetal pig muscle at late gestation." Thesis, Toulouse, INPT, 2018. http://www.theses.fr/2018INPT0099.

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Dans le secteur de l’élevage porcin, les truies ont été sélectionnées pendant des décennies pour leur prolificité afin de maximiser la production de viande. Cependant, cette sélection a été associée à une mortalité plus élevée des nouveau-nés. Dans ce contexte, le muscle foetal squelettique est essentiel à la survie du porcelet, car il est nécessaire pour les fonctions motrices et la thermorégulation. Par ailleurs, la structure tridimensionnelle du génome s'est avérée jouer un rôle important dans la régulation de l'expression génique. Ainsi, dans ce projet, nous nous sommes intéressés à la con

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22

Rahmani, Alexandra. "Identification des facteurs de pathogénicité de la bactérie Vibrio tapetis, responsable de la maladie de l'anneau brun chez la palourde japonaise Ruditapes philippinarum et de mortalités chez les poissons marins Transcriptomic analysis of clam extrapallial fluids reveals immunity and cytoskeleton alterations in the first week of Brown Ring Disease development, in Fish & Shellfish Immunology 93, October 2019." Thesis, Brest, 2019. http://www.theses.fr/2019BRES0059.

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L’objectif principal de cette thèse est d’étudier les mécanismes liés au pouvoir pathogène de V. tapetis.Pour cela, nous avons développé 2 axes de recherche. Le premier axe vise à étudier la virulence de V. tapetis en répondant aux 2 problématiques suivantes : Quels sont les gènes impliqués dans la virulence de V. tapetis ? et Existe-t-il des marqueurs hôtes-spécifiques de la virulence de V. tapetis ? Le second axe de recherche concerne l’interaction hôte pathogène et répond aux 2 problématiques suivantes : Quels sont les gènes exprimés lors de l’infection chez l’hôte ? et Quelles sont les mod

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23

Garcia, Armisen Tamara. "Etude de la dynamique des Escherichia coli dans les rivières du bassin de la Seine." Doctoral thesis, Universite Libre de Bruxelles, 2006. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210795.

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The purpose of our study was to describe the dynamics of E. coli in the rivers of the Seine watershed. This watershed is characterized by a poor microbiological water quality due to an important population density, industrial activities and intensive agriculture. The main objectives of our study were to obtain field microbiological data describing the system and to understand the underlying mechanisms in order to build a model able to describe and predict the fate of the fecal bacteria at the scale of the whole watershed. This model was built in order to help management of microbiological wate

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24

Schoenebeck, Casey Walter. "An evaluation of yellow perch Perca flavescens mortality in South Dakota /." 2009. http://wfs.sdstate.edu/wfsdept/Publications/Theses/Schoenebeck,%20Casey%20W.%20Ph.D.-2009.pdf.

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25

Whalen, Kevin Gerard. "Smolt production and overwinter mortality of Atlantic salmon (Salmo salar) stocked as fry." 1998. https://scholarworks.umass.edu/dissertations/AAI9823788.

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Research was completed to determine factors affecting smolt production and overwinter mortality of Atlantic salmon (Salmo salar) stocked as fry in Vermont tributaries of the Connecticut River. Specific focuses included: (1) timing of smolt migration relative to environmental and physiological factors; (2) effect of ice formation on habitats selected and winter distribution of parr; (3) effect of maturation on parr growth and smolt recruitment; and (4) smolt production dynamics and recruitment modeling. Smolt migration timing and recruitment was determined using net weirs and counting fences an

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26

BARTOŇ, Daniel. "Effects of hydropeaking on the attached eggs of a rheophilic cyprinid species." Master's thesis, 2018. http://www.nusl.cz/ntk/nusl-391741.

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Effects of artificial water fluctuations called hydropeaking on the detachment rates of adhesive eggs were studied using a rheophlic fish (asp Leuciscus aspius) as a model species. I attempted to relate egg density to abiotic conditions of the spawning ground and identify optimal conditions for the eggs. Egg densities were also studied during spawning season when hydropeaking occurred. In the experimental setup, egg detachment rates were tested with different speeds, substrate type and exposition time and critical conditions for the eggs were assessed.

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27

Overholtzer-McLeod, Karen L. "Population dynamics of coral-reef fishes : spatial variation in emigration, mortality, and predation." Thesis, 2003. http://hdl.handle.net/1957/30593.

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Understanding the dynamics of open marine populations is difficult. Ecological processes may vary with the spatial structure of the habitat, and this variation may subsequently affect demographic rates. In a series of observational and experimental studies in the Bahamas, I examined the roles of emigration, mortality, and predation in the local population dynamics of juvenile coral-reef fishes. First, I documented mortality and emigration rates in populations of bluehead and yellowhead wrasse. Assuming that all losses were due solely to mortality would have significantly underestimated survivo

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28

Lin, Ding Rong, and 林頂榮. "Age､growth and total mortality of lizard fish (saurida tumbil) in the southern part of the east China sea." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/07366326371683808458.

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29

Lin, Ding-Rong, and 林頂榮. "Age﹑growth and total mortality of lizard fish (saurida tumbil) in the southern part of the east China sea." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/17508731761591161809.

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30

Kempf, Alexander [Verfasser]. "Diet selection and predation mortality in the North Sea fish assemblage : improving multi species stock assessment / vorgelegt von Alexander Kempf." 2009. http://d-nb.info/992717434/34.

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31

STRAPINA, Josef. "Srovnání rozsahu poškození a mortality ryb jako úlovku sportovních rybářů ponechaných v klasickém vezírku a speciálním saku {--} {\clq}tunelu`." Master's thesis, 2009. http://www.nusl.cz/ntk/nusl-51345.

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Práce je založena na pokusech, ve kterých se srovnával rozsah poškození a mortality kapra obecného (Cyprinus carpio, L.) ponechaného v klasickém vezírku (zpevněném i nezpevněném) a speciálním saku {--} "tunelu". Hlavním cílem práce je jednak rozšířit poznatky pro rekreační (sportovní) rybolov a především přispět k poznání správného způsobu uchovávání ulovených živých ryb, které si rybář rozhodl ponechat v živém stavu tak, aby byly minimalizovány negativní důsledky jejich držení před usmrcením a poukázat na šetrnější zacházení s rybou, ne-li zamezit jejich týrání.

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32

Venturelli, Paul Anthony. "Life History, Maternal Quality and the Dynamics of Harvested Fish Stocks." Thesis, 2009. http://hdl.handle.net/1807/19305.

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Knowledge of offspring production (recruitment) is fundamental to understanding and forecasting the dynamics of a population. In this thesis, I focus on two demographic characteristics of fish stocks that are important to recruitment: population density and age structure. First, populations produce more recruits at low density, but quantifying this response has proven difficult. Using data from hundreds of populations of walleye (Sander vitreus), an economically important freshwater fish, I demonstrate that the growing-degree-day metric (a temperature index) is better than age at explaining va

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33

Dimoff, Sean. "Insight into coral reef ecosystems: investigations into the application of acoustics to monitor coral reefs and how corallivorous fish respond to mass coral mortality." Thesis, 2021. http://hdl.handle.net/1828/12666.

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Coral reefs around the world are threatened by a variety of sources, from localized impacts, including overfishing and coastal development, to global temperature increases and ocean acidification. Conserving these marine biodiversity havens requires both global and local action informed by scientific research. In this thesis, I use data collected from the coral reefs around Kiritimati atoll (Republic of Kiribati) in the central equatorial Pacific, first to assess the applicability of two common metrics used in passive underwater acoustic research, and second to examine the effects of a marine

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34

RICHTEROVÁ, Zuzana. "Vliv pyrethroidových pesticidů na ryby." Doctoral thesis, 2016. http://www.nusl.cz/ntk/nusl-260863.

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Pyrethroids are ones of the most used pesticides worldwides. The widespread use and high stability of pyrethroids lead to the assumption of that their occurrence in the environment could be quite frequent. They can reach water ecosystem as pollutants. Residues of pyrethroids are not only detected in the water column, but also in sediments and in fish tissues. The first study was devoted to the product Nexide containing 60 g.l-1 of active substance gamma-cyhalothrin. Tested Nexide concentrations were 5, 25, 50, 100, and 250 &microg.l-1. Early life stage test was used.Common carp (Cyprinus carpi

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