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Dissertations / Theses on the topic 'Carassius'

Author: Grafiati

Published: 4 June 2021

Last updated: 27 July 2025

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1

Bretaud, Sandrine. "Effets neurotoxiques de pesticides chez le carassin dore (carassius auratus l. )." Rennes 1, 2001. http://www.theses.fr/2001REN10035.

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Les travaux effectues dans le cadre de cette these ont permis de caracteriser, chez le carassin dore (carassius auratus l. , cyprinidae), les effets toxiques de pesticides a differents niveaux d'organisation biologique (comportemental, neurophysiologique et biochimique). Les relations entre les impacts constates a ces differents niveaux ont egalement ete abordees. Six pesticides de differentes familles chimiques ont ete etudies : le carbofuran (insecticide), le prochloraze (fongicide), le nicosulfuron, le diuron, l'atrazine et la bentazone (herbicides). Les resultats montrent que : - des pertu

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2

Sukovich, Ninél, and Jennifer Backman. "Kan musselextrakt (Mytilus edulis) inducera födosök hos omnivoren ruda, Carassius carassius (Linnaeus, 1758)?" Thesis, Södertörns högskola, Miljövetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-31658.

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Over the last three decades there has been a significant increase in aquaculture production and the demand for farmed fish is predicted to rise further. More fish are being caught to become fishmeal in aquaculture, than for direct human consumption use, while a large number of fish stocks are being depleted. Many popular farmed species are carnivores and thus brought up on a diet consisting of fishmeal and fish oil. However, several studies have shown that several fish species can be brought up on a diet consisting of mussel meal instead of fishmeal. If so, this finding can possibly lead to a

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3

Jeffries, Daniel Lee. "Genetic and genomic approaches to the conservation of the threatened crucian carp Carassius carassius (L.) : phylogeography, hybridisation and introgression." Thesis, University of Hull, 2015. http://hydra.hull.ac.uk/resources/hull:13225.

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Biological invasions can have dramatic detrimental impacts on ecosystems, however they also represent rich opportunities to study the evolutionary processes associated with them. Hybridisation and subsequent introgression are two such processes and are common among native and non-native species. The crucian carp, Carassius carassius (L.), is a European freshwater fish that is threatened throughout much of its native range by several factors including hybridisation and introgression with three non-native species, the goldfish, Carassius auratus (L.), the gibel carp, Carassius gibelio (Bloch), a

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4

Brooke, Elizabeth Cameron. "Waterborne Fluoxetine Exposure Disrupts Metabolism in Carassius auratus." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/32253.

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Fluoxetine, a selective serotonin re-uptake inhibitor (SSRI) and the active ingredient in Prozac®, is found in the environment and disrupts feeding and metabolism in exposed fish. The objective of this research was to investigate the mechanisms involved in the feeding and metabolism disruption in the model goldfish (Carassius auratus). Two short-term waterborne fluoxetine exposures (7- and 14-days) were performed using two environmentally relevant doses of fluoxetine (0.5 and 1 μg/L) and metabolic effects at the level of the brain, liver, serum and bile in goldfish were investigated. Abundance

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5

Biljana, Lončar. "Hemometrijski pristup analizi osmotske dehidratacije srebrnog karaša (Carassius gibelio)." Phd thesis, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, 2015. http://www.cris.uns.ac.rs/record.jsf?recordId=94749&source=NDLTD&language=en.

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Hemometrijskim metodama (deskriptivna statistika, analiza glavnih komponenti, ve&scaron;tačke neuronske mreže i fazi optimizacija) analizirani su rezultati procesa osmotske dehidratacije mesa srebrnog kara&scaron;a, sa ciljem unapređenja efikasnosti osmotskog tretmana i pronalaženja optimalnih tehnolo&scaron;kih parametara.Osmotski tretman se odvijao u tri osmotska rastvora (vodeni rastvor natrijum hlorida isaharoze, kombinacija vodenog rastvora natrijum hlorida i saharoze i melase i melasa &scaron;ećerne repe) različitih koncentracija, na četiri temperature (10°C, 20°C, 35°C i 50&

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6

Costa, Juliana Mara. "Níveis de fósforo em dietas para Kinguio (Carassius auratus)." Universidade Estadual do Oeste do Parana, 2012. http://tede.unioeste.br:8080/tede/handle/tede/1973.

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Made available in DSpace on 2017-07-10T18:13:29Z (GMT). No. of bitstreams: 1 Juliana Mara Costa.pdf: 556873 bytes, checksum: b4d6f1321099600920caa72a0df212c3 (MD5) Previous issue date: 2012-07-09<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>Nutrition has a fundamental importance for the success of fish farming, considering that it represents the majority costs of production. Considering that the fish absorb various nutrients in the water, although the amount of phosphorus absorbed is not sufficient for its proper development, having the need to supply it in diet. There

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7

周俊雄 and Chun-hung Chow. "Characterization of a growth hormone gene in goldfish, Carassius Auratus." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31220666.

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8

Borkholder, Brian D. "Genetic marker frequency differences among strains of goldfish, Carassius auratus." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-09122009-040439/.

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9

Maxey, Gail D. "Identification of major histocompatibility complex haplotypes in goldfish, Carassius auratus." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-08042009-040408/.

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10

Chow, Chun-hung. "Characterization of a growth hormone gene in goldfish, Carassius Auratus /." Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B2056658X.

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11

O'Connor, Candace Sharon. "Effect of ethanol on thermoregulation in the goldfish, Carassius auratus." PDXScholar, 1986. https://pdxscholar.library.pdx.edu/open_access_etds/3703.

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In an attempt to elucidate the mechanism by which ethanol affects vertebrate thermoregulation, the effect of ethanol on temperature selection was studied in the goldfish, Carassius auratus. Ethanol was administered to 10 to 15 g fish by mixing it in the water of a temperature gradient. The dose response curve was very steep between 0.5% (v/v) ethanol (no response) and 0.7% (significant lowering of selected temperature in treated fish). Fish were exposed to concentrations of ethanol as high as 1.7%, at which concentration most experimental fish lost their ability to swim upright in the water. A

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12

Besen, Kayane Pereira. "Luteína como fonte de carotenoide natural: efeito no desempenho zootécnico e pigmentação da pele de juvenis de kinguios." Universidade do Estado de Santa Catarina, 2017. http://tede.udesc.br/handle/handle/2564.

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Submitted by Claudia Rocha (claudia.rocha@udesc.br) on 2018-03-16T13:26:21Z No. of bitstreams: 1 PGCA17MA217.pdf: 1030045 bytes, checksum: ace9a03fd7a37e7c1a98ed11f28f68e5 (MD5)<br>Made available in DSpace on 2018-03-16T13:26:21Z (GMT). No. of bitstreams: 1 PGCA17MA217.pdf: 1030045 bytes, checksum: ace9a03fd7a37e7c1a98ed11f28f68e5 (MD5) Previous issue date: 2017-02-21<br>PROMOP<br>The objective of this study was evaluating the efficiency of lutein supplementation on the performance and deposition of skin carotenoids in comparison to other sources for young kinguio. There forean evaluation wa

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13

Bradshaw, Julia. "Consequences of Gill Remodeling on Na+ Transport in Goldfish, Carassius auratus." Thesis, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/19755.

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Goldfish undergo an adaptive morphological change in their gills involving the reversible growth and loss of a mass of cells (interlamellar cell mass, ILCM) in between the lamellae depending on oxygen demand, which can be altered by the environment or metabolic demands of the individual. The ILCM contributes to decreased passive Na+ efflux across the gill. Active uptake is maintained by the re-distribution of the ionocytes expressing Na+-uptake relevant genes (NHEs and H+-ATPase) to the outer edge of the ILCM where they can establish contact with the external environment and/or lamellar epith

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14

Tzaneva, Velislava. "Causes and consequences of gill remodelling in the goldfish, Carassius auratus." Thesis, University of Ottawa (Canada), 2010. http://hdl.handle.net/10393/28773.

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Goldfish are able to drastically change their gill morphology by forming an interlamellar cell mass (ILCM) when acclimated to temperatures below 15 ° C. This morphological change is reversed when the fish is exposed to hypoxia or an increase in temperature. The main goal of this thesis was to investigate how the presence of the ILCM affects the transfer and sensing of respiratory gases as well as to identify the cues that trigger gill remodelling. Using an extracorporeal blood shunt to measure blood gases, I show that the presence of the ILCM does not impede O2 uptake under normoxic or hyp

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15

Ayoub, Fadi. "Estradiol regulation of the neurohypophysial hormones in the goldfish, Carassius auratus." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq28393.pdf.

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16

Neumann, Norman Frederick. "Regulation of antimicrobial mechanisms of macrophages of the goldfish (Carassius auratus)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq39575.pdf.

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17

許建熙 and Kin-hi Raymond Hui. "Molecular cloning and characterization of goldfish (Carassius auratus)mu-opioid receptor." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31224453.

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18

李繼仁 and Kai-yan Lee. "Regulation of gonadotropin-releasing hormone and gonadotropin in goldfish, carassius auratus." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1996. http://hub.hku.hk/bib/B31214332.

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19

Houghton, Keith Michael. "A test of ideal free distribution models using goldfish, Carassius auratus." Thesis, University of Nottingham, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358033.

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20

Hui, Kin-hi Raymond. "Molecular cloning and characterization of goldfish (Carassius auratus) mu-opioid receptor." Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk:8888/cgi-bin/hkuto%5Ftoc%5Fpdf?B22956323.

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21

Lee, Kai-yan. "Regulation of gonadotropin-releasing hormone and gonadotropin in goldfish, carassius auratus /." Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B18038165.

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22

Santos, Fernanda Romaguera Pereira dos. "Histamina facilita a aprendizagem em uma tarefa de escolha espacial em Carassius auratus." Universidade Federal de São Carlos, 2006. https://repositorio.ufscar.br/handle/ufscar/5355.

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Made available in DSpace on 2016-06-02T20:19:28Z (GMT). No. of bitstreams: 1 887.pdf: 469528 bytes, checksum: fc5bcdbae3a402aaac1aae4dbf59bcd1 (MD5) Previous issue date: 2006-03-03<br>Universidade Federal de Sao Carlos<br>This work intended to investigate in forebrain ablated Carassius auratus the effect of the H1 receptor blockade in a spatial choice task using a T-maze test with positive reinforcement. Sixty-nine goldfish were submitted to surgery for removal of both telencephalic lobes five days before the beginning of the experiment. A T-shaped glass aquarium, which had two feeders locat

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23

Polard, Thierry. "Caractérisation des effets génotoxiques sur poissons de produits phytosanitaires en période de crue." Toulouse 3, 2010. http://thesesups.ups-tlse.fr/1710/.

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Les recherches effectuées dans le cadre de cette thèse visent à évaluer l'impact biologique des flashs de contaminations d'origine agricole associés aux crues. Dans un premier temps, nous avons cherché à évaluer les effets génotoxiques de tels événements. Ces mesures renseignent sur des effets précoces et pertinents écologiquement. Après avoir optimisé et validé le test micronoyaux dans nos conditions expérimentales, nous l'avons utilisé conjointement avec l'essai comète pour tester le potentiel génotoxique de 3 conditions hydrologiques contrastées. Il a ainsi été mis en évidence une plus gran

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24

Kwok, Yuen-yuen. "Cloning and characterization of PAC1 receptor splice variants in goldfish (Carassius auratus)." Click to view the E-thesis via HKUTO, 2004. http://sunzi.lib.hku.hk/hkuto/record/B30708072.

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25

Crump, Kate. "The effects of methylmercury on the reproductive axis of goldfish (Carassius auratus)." Thesis, University of Ottawa (Canada), 2008. http://hdl.handle.net/10393/27674.

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Methylmercury is both a potent neurotoxin and putative non-steroidal endocrine disruptor. Laboratory studies have provided evidence of reproductive impairment in many fish species after mercury exposure. Effects have been observed at every level of the reproductive axis including degeneration of neurons in the hypothalamus, decreased activity of gonadotrophs in the pituitary, and reduced steroidogenesis in the gonads. Despite the growing amount of research linking methylmercury exposure to reproductive impairment, the target tissues and mechanisms of action involved are still largely unknown.

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26

Zhang, Yushi. "Characterization and regulation of growth hormone receptors in goldfish (Carassius auratus L.)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0030/NQ63943.pdf.

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27

Lado, Wudu E. "The Neural Substrate of Sex Pheromone Signalling in Male Goldfish (Carassius auratus)." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23460.

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The transmission of sex pheromone-mediated signals is essential for goldfish reproduction. However, the neural pathways underlying this reproductive signalling pathway in the goldfish brain is not well described. Lesioning experiments have shown previously that two brain areas, the preoptic area (POA) and the ventral telencephali pars ventralis (Vv) in particular, are important for reproduction. We used patch clamp electrophysiology to study the electrical activities of POA and Vv neurons. Based on the intrinsic properties of these neurons, we suggest there are five different functional classe

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28

Richardson, Michael John. "Factors limiting the colonization success of an introduced exotic fish (Carassius auratus)." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=40235.

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The goldfish (Carassius auratus) is a hardy exotic species that have established sporadically distributed feral populations throughout North America. In one shallow seasonally anoxic pond goldfish formed a large stunted population of 15-17,000 ind ha$ sp{-1}$, with 53% being small young of the year. Goldfish were predominantly benthic herbivores with little diet overlap with resident red-spotted newts (Notapthalmus v. viredescens). Thus in relatively simple systems lacking fish predators goldfish can be very successful. However in systems with a complex native fish community, goldfish have had

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Kwok, Yuen-yuen, and 郭圓圓. "Cloning and characterization of PAC1 receptor splice variants in goldfish (Carassius auratus)." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B30708072.

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30

Gehres, Martin [Verfasser]. "Untersuchungen zum Sehen von bewegten Objekten beim Goldfisch (Carassius auratus) / Martin Gehres." Mainz : Universitätsbibliothek der Johannes Gutenberg-Universität Mainz, 2007. http://d-nb.info/1225401453/34.

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31

Violeta, Bolić Trivunović. "Morfološka i genetička raznovrsnost vrsta Carassius auratus sa teritorije Vojvodine i peripanonske oblasti." Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2016. https://www.cris.uns.ac.rs/record.jsf?recordId=101099&source=NDLTD&language=en.

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Prema novijim istraživanjima, kompleks Carassius auratusčini najmanje pet vrsta roda  Carassius: Carassius carassius, Carassius auratus, Carassius langsdorfii, Carassius cuvieri i Carassius gibelio. Vrste ovog roda su morfolo&scaron;ki veoma slične i nemoguće ih je razlikovati na osnovu uobičajenih morfolo&scaron;kih karaktera, te su ranije  sve determinisane kao Carassius auratus gibelio ili Carassius gibelio. Jedina vrsta koja se značajnije razlikuje je Carassius carassius.  Smara se da su vrste ovog kompleksa unesene u Evropu iz Azije u 17. veku.Najveći broj predstavnika komp

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32

Brasileiro, Olga Sueli Moreira. "Influência da nicotina e da mecamelamina em teste de preferência condicionada por lugar em peixes da espécie Carassius auratus." Universidade Federal de São Carlos, 2003. https://repositorio.ufscar.br/handle/ufscar/5237.

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Made available in DSpace on 2016-06-02T20:19:09Z (GMT). No. of bitstreams: 1 DissOSMB.pdf: 768691 bytes, checksum: a1ee980e3f11530bc253a291728b319e (MD5) Previous issue date: 2003-11-27<br>Financiadora de Estudos e Projetos<br>Nicotine is a neuromodulator of the central nervous system, which has a wide variety of behavioural effects. The aim of this study is to investigate the role of nicotine and mecamylamine on the learning and memory mechanism through conditioning by a positive reinforcement process in 158 fish of the species Carassius auratus. For this purpose a rectangular aquarium was

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33

Brito, Thiago Marques de. "Validação da preferência claro/escuro como modelo comportamental de ansiedade no Carassius auratus (peixe dourado)." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/59/59134/tde-29022012-092339/.

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A validação de um modelo experimental para se investigar a ansiedade deve estar baseada inicialmente em uma validação comportamental paramétrica, que pressupõe a investigação de respostas relacionadas ao comportamento de defesa da espécie frente às situações aversivas presentes no ambiente de exposição. Assim, o presente trabalho validou a preferência claro/escuro como um modelo comportamental para o estudo da ansiedade no peixe Carassius auratus (peixe dourado). Foram avaliados os seguintes parâmetros: repetição das exposições ao aparato de teste em 5 sessões diárias, privação de comida, aquá

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34

Poralla, Julia. "Untersuchungen zur Farbwahrnehmung beim Goldfisch Carassius auratus gibt es eine Kategorisierung von Spektralfarben? /." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=971304254.

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Gehres, Martin [Verfasser]. "Untersuchungen zum Sehen von bewegten Objekten beim Goldfisch (Carassius auratus) : Dissertation / Martin Gehres." München : GRIN Verlag, 2009. http://d-nb.info/1187833673/34.

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36

戚賜聰 and Chi-chung Stanley Chik. "Characterization of two chicken gonadotropin releasing hormone-II genes in goldfish, Carassius Auratus." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31220629.

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37

He, Mulan, and 何木蘭. "Molecular studies of two functional gonadotropin-releasing hormone receptors in goldfish, Carassius auratus." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31240240.

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МАКСИМІВ, ІВАН ВАСИЛЬОВИЧ. "ВПЛИВ ТРИАЗИНОВИХ ГЕРБІЦИДІВ НА ВІЛЬНОРАДИКАЛЬНІ ПРОЦЕСИ У ТКАНИНАХ КАРАСЯ СРІБЛЯСТОГО (Carassius auratus L.)". Thesis, Тернопіль, 2021. https://repository.tdmu.edu.ua//handle/123456789/17115.

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Дисертація присвячена дослідженню гематологічних, біохімічних та гістологічних показників у крові, печінці, нирках та зябрах карася сріблястого (C. auratus L.) за дії тразинових гербіцидів Зенкор та Гезагард, токсична дія яких на водні організми спрямована на різні тканини та пов’язана з розвитком оксидативного стресу. Отримано дані про те, що організм риб відзначався різним ступенем реакції на токсичний вплив Зенкору та Гезагарду на органному рівні. Так, зокрема, негативний вплив Зенкору, в основному, спричиняє порушення у структурі та роботі антиоксидантної системи печінки та нирок риб, а Ге

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39

Gazzola, Rangel Antonio [UNESP]. "Preferência por substratos escuros no C. auratus: influência das condições de luz no alojamento." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/97485.

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Made available in DSpace on 2014-06-11T19:29:00Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-03-14Bitstream added on 2014-06-13T19:17:01Z : No. of bitstreams: 1 gazzola_ra_me_bauru.pdf: 248528 bytes, checksum: 218a7bda6ba9d6f0a378ed3514a7906f (MD5)<br>Universidade Estadual Paulista (UNESP)<br>O objetivo do presente estudo foi avaliar o comportamento de preferência por escuridão em peixes da espécie C. auratus. No primeiro experimento avaliamos os efeitos das condições de alojamento sobre o comportamento de preferência, comparando posteriormente a situações onde foi inserido um su

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Sassine, Jeannette M. "The effects of fluoxetine exposure on growth and metabolism in the goldfish, Carassius auratus." Thesis, University of Ottawa (Canada), 2010. http://hdl.handle.net/10393/28598.

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Fluoxetine (FLX), the active ingredient of Prozac(TM), is a selective serotonin re-uptake inhibitor (SSRI) and has been detected in sewage treatment plant effluents, surface waters, and in multiple fish species. One large gap in the literature exploring the effects of FLX is its affects on food intake and metabolism. The objectives of this study are to assess the role of FLX (540 ng FLX/L of tank water (high environmental level) and 54 mug/L) on food intake and whether FLX can cause effects on glycolytic metabolism unrelated to feeding in goldfish. FLX did elicit food deprivation and weight ch

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Hobbs, Kimberley Doreen. "The effect of antifreeze proteins on the cold tolerance of godlfish, Carassius auratus L." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ42395.pdf.

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42

馬智謙 and Chi-him Eddie Ma. "Molecular studies of gonadotropin releasing hormone receptors and estrogen receptors in goldfish (Carassius auratus)." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B4257531X.

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43

Rooney, Donal James. "Telencephalic modulation of arousal in the goldfish (Carassius auratus) and common toad (Bufo bufo)." Thesis, Queen's University Belfast, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329405.

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44

Quick, Ilona A. "Brain mechanisms of arousal in the goldfish (Carassius auratus) and common toad (Bufo bufo)." Thesis, Queen's University Belfast, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336003.

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Ma, Chi-him Eddie. "Molecular studies of gonadotropin releasing hormone receptors and estrogen receptors in goldfish (Carassius auratus)." Click to view the E-thesis via HKUTO, 2000. http://sunzi.lib.hku.hk/hkuto/record/B4257531X.

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Wyzisk, Katja. "Experimente zur Formen- und Grössenwahrnehmung beim Goldfisch (Carassius auratus) unter Verwendung von Scheinkonturen und Grössentäuschungen." [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=976811901.

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Brockhoff, Bethany. "Caffeine Elicits Time Dependent Biphasic Response of Functional Recovery in Carassius auratus Hemilabyrinthectomy Lesion Model." NSUWorks, 2015. http://nsuworks.nova.edu/occ_stuetd/35.

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Caffeine is one of the most popular psychostimulant drugs worldwide. Its effects are exerted through a variety of complex mechanisms, apparently primarily via interactions with adenosine A1 and A2A receptors. This drug has also been proven to elicit neuroprotective responses in a number of different brain disorders of the Central Nervous System (CNS), as well as provide enhancement of cognitive abilities. Moreover, a biphasic set of functional and structural neurological changes are often found in these receptors among diverse vertebrates. I investigated the effects of chronic caffeine exposur

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Campbell, Benjamin. "Calcium Dynamics of Isolated Goldfish (Carassius auratus) Retinal Horizontal Cells: Effects of Oxygen-Glucose Deprivation." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/32395.

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Studies on the survival of central nervous system of hypoxia-tolerant species under challenges of reduced energy availability have characterised adaptive mechanisms of brain at the cell and tissue level that lead to reduced excitability and protection. However, evidence of hypoxic suppression of retinal activity in these species has not been followed up with mechanistic studies. Microspectrofluorometric monitoring of intracellular free Ca2+ concentration ([Ca2+]i) is useful for identifying cellular mechanisms that may lead to adaptive strategies, as unregulated increases in [Ca2+]i cause toxic

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Li, Jason. "Swimming in four goldfish (Carassius auratus) morphotypes: understanding functional design and performance through artificial selection." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/223.

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Although artificially selected goldfish exhibit swimming performance decrements, with the most derived morphotypes more affected, they can be utilized to explore functional design and movement pattern principles in aquatic vertebrates. Drag, steady swimming kinematics (tailbeat frequency, amplitude, stride length), energetics (standard and active metabolic rate), fast-start performance (average and maximum velocity and acceleration), stability in yaw and roll and propulsive muscle ultrastructural characteristics (mitochondrial volume density and spacing, myofibril diameter and capillary to fib

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Gandar, Allison. "Réponse aux stress multiples chez les poissons : effets croisés de la température et des cocktails de pesticides." Thesis, Toulouse 3, 2015. http://www.theses.fr/2015TOU30310/document.

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Les changements climatiques et l'émission de polluants dans l'environnement sont susceptibles d'entrainer des effets croisés sur les communautés et le fonctionnement des écosystèmes. Les changements de température sont notamment susceptibles de modifier le comportement et la toxicité des polluants, et de sensibiliser les organismes aux stress chimiques. Inversement, l'exposition à des polluants peut diminuer la tolérance thermique des espèces ectothermes comme les poissons. Dans ce contexte, nous avons étudié la réponse d'une espèce modèle de poissons en toxicologie aquatique, le Carassin doré

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