Dissertations / Theses on the topic 'Cherax quadricarinatus'
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Garza, de Yta Antonio Rouse David B. "Hatchery, nursery, nutrition and stock evaluation of redclaw crayfish Cherax quadricarinatus." Auburn, Ala, 2009. http://hdl.handle.net/10415/1851.
Full textPavasovic, Ana. "Evaluation of the nutritional requirements of redclaw crayfish, Cherax quadricarinatus." Thesis, Queensland University of Technology, 2008. https://eprints.qut.edu.au/16615/1/Ana_Pavasovic_Thesis.pdf.
Full textPavasovic, Ana. "Evaluation of the nutritional requirements of redclaw crayfish, Cherax quadricarinatus." Queensland University of Technology, 2008. http://eprints.qut.edu.au/16615/.
Full textBustos, Vergara Cristian Wladimir. "Desarrollo del gastrolito en langosta de tenaza roja, Cherax quadricarinatus (von Martens, 1868)." Tesis, Universidad de Chile, 2010. http://repositorio.uchile.cl/handle/2250/131181.
Full textGran variedad de seres vivos desarrollan sistemas capaces de crear estructuras mineralizadas, que se usan como protección, sostenimiento, alimentación, reservas de minerales, etc. La formación y degradación de estructuras minerales resulta ser un punto crítico en la fisiología de animales invertebrados como los crustáceos y en particular en el modelo animal utilizado en esta memoria de título, la langosta de tenaza roja, Cherax quadricarinatus, especie cuyo desarrollo está en íntima relación con la formación de una reserva mineral llamada gastrolito, que se fabrica en la parte anterior del estómago cardiaco, en una zona especializada de la pared estomacal, el disco del gastrolito, cuyo epitelio presenta distinta estructura según el momento del ciclo de muda y representa un excelente modelo para el estudio de la biomineralización. La matriz extracelular del gastrolito está formada por moléculas cargadas negativamente, entre las que se destacan los proteoglicanos, que son depositados por el epitelio formador. Los proteoglicanos serían los responsables de entregar un orden definido al depósito de carbonato de calcio amorfo que compone al gastrolito. La etapa del ciclo de muda se determinó por observación del exoesqueleto de los individuos, cuando éste era blando se clasificó en la etapa de postmuda y si estaba rígido en cualquiera de las otras dos etapas: intermuda o premuda. Para diferenciarlas se radiografiaron y en intermuda no se observó la imagen compatible con gastrolito y por el contrario, si fue posible observarlo en premuda. Se extrajeron estómagos de las langostas clasificadas, se procesaron de manera rutinaria para realizar cortes histológicos, los que fueron teñidos con las técnicas de hematoxilina-eosina y azul de alciano a pH 2,5; para describir zonas de interés y reconocer la presencia de glicosaminoglicanos, respectivamente. Además se utilizaron reacciones inmunohistoquímicas con el propósito de identificar temporal, espacial y específicamente algunos proteoglicanos presentes en la matriz orgánica del gastrolito. Se logró establecer un orden espacial y temporal para proteoglicanos específicos: Dermatán sulfato y condroitín-4-sulfato están presentes en los tres estados del ciclo de muda, observándose una mayor intensidad de reacción en las etapas de intermuda y premuda principalmente, lo que sugiere, al igual que en otros estudios similares, que serían necesarios para mantener el orden en el tipo de acumulación de carbonato de calcio en la formación de esta biocerámica. Condroitín-6-sulfato se muestra con una reacción más intensa en intermuda y premuda, disminuyendo su intensidad en postmuda, lo que sugiere una participación más activa durante la formación, luego en postmuda está ausente tanto en el epitelio formador como en el gastrolito en degradación y sólo se observa en el tejido conectivo subyacente al lugar de formación del gastrolito. Queratán sulfato presenta una mayor intensidad de reacción en intermuda y premuda principalmente, sugiriendo un rol en el inicio de la calcificación. En el periodo de postmuda se encuentra en el gastrolito principalmente y en el epitelio formador con menor intensidad. Esta distribución temporal de los proteoglicanos sugiere la influencia en el desarrollo de los gastrolitos de la langosta de tenaza roja
Financiamiento: Proyecto Fondap 11980002 y Proyecto ECOS-CONICYT C07-B02
Xue, Xiaoming. "Enzymic studies of cellulase and xylanase from the digestive system of the redclaw crayfish Cherax quadricarinatus." Thesis, Queensland University of Technology, 1998. https://eprints.qut.edu.au/36965/1/36965_Xue_1998.pdf.
Full textPoblete, Hevia Gonzalo Andrés. "Retrosíntesis biomimética en gastrolitos de Langosta Tenaza Roja (Cherax quadricarinatus) mediante técnica de mineralización usando polímeros sintéticos." Tesis, Universidad de Chile, 2009. http://repositorio.uchile.cl/handle/2250/131217.
Full textLa biomimética o mimetismo de lo biológico es una disciplina muy antigua que trata de imitar algo preexistente en la naturaleza, por lo tanto tiene como fuente de inspiración alguna característica o habilidad biológica de los organismos para generar materiales útiles para el ser humano. Debido a la necesidad del ser humano por alcanzar nuevos logros y seguir superando sus limitaciones son que la biomimética ha alcanzado la importancia tecnológica que tiene actualmente. Por tal razón numerosas investigaciones se han realizado con el objeto de dilucidar los diferentes mecanismos moleculares que permitan conocer como se forman estos biomateriales de origen biológico y obtener materiales más complejos con características superiores a las ya existentes. Dado al menor conocimiento que se tiene sobre los materiales amorfos, en la presente memoria de título se estudió un tipo de reserva inorgánico de tipo amorfo del carbonato de calcio (CaCO3) del crustáceo Cherax quadricarinatus llamado gastrolito. Cherax quadricarinatus es un crustáceo que vive en zonas de agua dulce y que presenta un exoesqueleto que muda constantemente. Los gastrolitos son concreciones altamente calcificadas, encontradas en la zona cardiaca del estómago de algunos Decápodos, que actúan como reservorios temporales formados por CaCO3 de tipo amorfo (CCA), material inorgánico crucial para el proceso de muda de su exoesqueleto y un excelente modelo de mineralización de CCA. En estudios de biomineralización se han usado variados tipos de aditivos para evaluar la participación de éstos en ensayos de cristalización in vitro de CaCO3. En esta memoria de título se utilizaron diferentes polímeros acídicos comerciales tales como: ácido fítico (AF), ácido poliaspártico (APS) y ácido poliacrílico (APA) en conjunto con sustratos (esponja y gastrogel) y proteoglicanos (PGS) de fracciones solubles (PG-FS) e insoluble (PG-FI) obtenidos a partir del gastrolitos como aditivos en la cristalización del CaCO3. Los ácidos AF, APS y APA son polímeros comerciales usados por el ser humano en diferentes procesos industriales y que han mostrado tener efectos modificadores sobre la cristalización del CaCO3. 7 El proceso in vitro de cristalización del CaCO3 fue el método de difusión de gases y las técnicas de caracterización de los cristales obtenidos fueron la microscopía electrónica de barrido (SEM) y la difracción de rayos X (XRD), con los cuales se pudo observar la morfología y determinar la estructura cristalina del CaCO3 obtenidos en las diferentes combinaciones ensayadas de polímeros, sustratos (esponja y gastrogel) y proteoglicanos de ambas fracciones (PG-FS; PG-FI) durante la cristalización de CaCO3. Encontramos que los sustratos esponja y gastrogel al ser usados como aditivos únicos en los ensayos de mineralización de CaCO3 mostraron una clara tendencia a la formación de estructuras amorfas y un efecto modulador mecánico del depósito cristalino. Con PG-FS se obtuvieron cristales de CaCO3 con morfología semejantes a los polimorfos de aragonita y calcita y estructuras cristalinas del tipo aragonita, calcita y vaterita, los cuales se determinaron mediante XRD. Sin embargo, con PG-FI se obtuvieron cristales con morfología similar a los polimorfos de aragonita y vaterita y se determinaron estructuras cristalinas del tipo aragonita, calcita y vaterita mediante XRD. Por otro lado, el uso de APA como único aditivo indujo la formación de estructuras cristalinas con morfologías esféricas observadas con SEM y estructuras cristalinas del tipo aragonita y calcita determinadas por XRD. Cuando el APS fue usado se observaron cristales con morfologías espiculadas y estructuras cristalinas del tipo aragonita, calcita y vaterita mediante XRD. Sin embargo, con AF como aditivo se observaron cristales con morfologías irregulares y se determinaron los polimorfos aragonita, calcita y vaterita mediante XRD. Por último, cuando AF se utilizó en presencia de otros aditivos o sustratos se obtuvieron cristales con morfología espiculadas, esféricas, romboédricas, etc. La determinación morfológica de los cristales de CaCO3 in vitro obtenidos mediante el proceso de difusión de gases fueron observados claramente mediante SEM y la determinación cristalina de sus polimorfos mediante XRD confirmando la importancia del efecto nucleador de los diferentes polímeros en combinación con sustratos de origen biológico, creemos, sin embargo, que el uso de nuevas técnicas de caracterización como AFM, XPS y microscopía electrónica de transmisión (TEM) potenciarían enormemente la presente memoria de título contribuyendo a un mejor entendimiento de los procesos moleculares involucrados en los ensayos de cristalización biológica de minerales inorgánicos como el CaCO3. Finalmente concluimos que es importante seguir ahondando en el conocimiento de la formación cristalina de materiales inorgánicos con el objeto de desarrollar nuevos materiales útiles para el ser humano y la creación de nuevas tecnologías de materiales, los cuales podrían llevar al hombre a nuevas fronteras aún no conocidas.
Baker, Natalie. "Levels and Patterns of Genetic Diversity in Wild Populations and Cultured Stocks of Cherax Quadricarinatus (von Martens, 1868) (Decapoda: Parastacidae)." Thesis, Queensland University of Technology, 2006. https://eprints.qut.edu.au/16255/1/Natalie_Baker_Thesis.pdf.
Full textBaker, Natalie. "Levels and Patterns of Genetic Diversity in Wild Populations and Cultured Stocks of Cherax Quadricarinatus (von Martens, 1868) (Decapoda: Parastacidae)." Queensland University of Technology, 2006. http://eprints.qut.edu.au/16255/.
Full textRoe, Brett, and b. roe@cqu edu au. "Ecologically Engineered Primary Production in Central Queensland, Australia - Integrated Fish and Crayfish Culture, Constructed Wetlands, Floral Hydroponics, and Industrial Wastewater." Central Queensland University. Sciences, 2005. http://library-resources.cqu.edu.au./thesis/adt-QCQU/public/adt-QCQU20080717.092551.
Full textChang, Li-Tzu, and 張立慈. "Biological Characteristics of Infestation by Craspedella pedum in Cherax quadricarinatus." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/77761264993951374391.
Full text國立中興大學
獸醫學系暨研究所
105
Cherax quadricarinatus is a common foreign species in Taiwan. It carries with parasite. What the species it is? I use optical microscopy, dissecting microscopy, scanning electron microscopy, and differential interference contrast microscopy to assist the identification of the parasite. In addition, use histopathology to find out whether the parasite causes red claw crayfish lesions? The result shows the species is Craspedella pedum which doesn’t cause lesions in Cherax quadricarinatus. And whether it infects Taiwan''s common crustaceans: Macrobrachium rosenbergii and Procambarus clarkia? The result shows it doesn’t infect mature Macrobrachium rosenbergii and Procambarus clarkia, but the influence on the young is still unknown. Is it possible to observe the hatching process of the worm eggs inside the carapace of the red claw crayfish to have a more complete understanding of the parasite life history? Due to rapidly deteriorated water quality, I didn’t get more information.
He, Jhih-Jyun, and 賀之軍. "The Application of Cherax Quadricarinatus Animal Model on White Muscle Disease." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/3m7jqr.
Full textSakuna, Kitikarn. "Novel RNA viruses causing muscle lesions in red claw crayfish (Cherax quadricarinatus)." Thesis, 2018. https://researchonline.jcu.edu.au/63103/1/JCU_63103-sakuna-2018-thesis.pdf.
Full textBochow, Shaun. "Characterisation of Cherax quadricarinatus densovirus: the first virus characterised from Australian freshwater crayfish." Thesis, 2016. https://researchonline.jcu.edu.au/48889/1/48889-bochow-2016-vol1.pdf.
Full textKe, Wen-Sheng, and 葛文聖. "Promotion of specific immunity and potential against white spot syndrome virus in Cherax quadricarinatus by probiotics." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/q76md2.
Full text國立臺灣大學
生物科技研究所
106
White spot syndrome virus(WSSV)is a major pathogen of aquacultured shrimp. The infection of WSSV occurs not only in shrimp but also in other marine and freshwater crustaceans, including crabs and crayfishes. WSSV has caused large economic losses and there is still no adequate treatment. Unlike vertebrate immunity which is composed of both innate and adaptive responses, invertebrates rely on multiple innate defense reactions to combat infections. However, probiotics have been used in aquaculture for the function of immune stimulation. In this study, three probiotics were used respectively as feed additive: Lactobacillus reuteri Pg4, Bacillus subtilis AC and B. licheniformis CK, all of which have been proved to increase the immune responses in vitro or in vivo experiments. In immune test, both of phenoloxidase(PO)and superoxide dismutase(SOD)activities in probiotic treated groups were significantly higher than normal feed group. In WSSV challenge test, the two Bacillus strains caused the highest survival rate compared to other groups, and the higher PO and SOD activities were also found in the survival shrimps in B. subtilis group. On the other hand, the results of intestinal microbiota analysis proved that WSSV infection could significantly influence the intestinal microbiota, while the L. reuteri Pg4 and B. subtilis AC could decrease some bacteria genera raised by WSSV infection. In conclusion, B. subtilis is the most effective probiotic among three probiotics to improve the survival rate against WSSV infection.
Liu, Yen-Ting, and 劉彦廷. "Molecular cloning and characterisation of prophenoloxidase and cytosolic manganese superoxide dismutase genes in the freshwater crayfish Cherax quadricarinatus." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/18303253849191194330.
Full text國立高雄海洋科技大學
海洋生物技術研究所
100
Abstract Prophenoloxidase (proPO) and cytosolic manganese superoxide dismutase (cMnSOD) play crucial roles in crustacean innate immunity. In the present study, both of above genes were cloned from hemocytes of the red claw crayfish Cherax quadricarinatus using reverse transcription- polymerase chain reaction (RT-PCR) and rapid amplification of cDNA ends (RACE) method, and then total hemocyte counts (THCs), gene expression and enzyme activities were characterized after injection of white spot syndrome virus (WSSV) or Aeromonas hydrophila. The full length cDNA of proPO is 2930 bp and encodes 665 amino acids, wherease the cMnSOD cDNA is 1096 bp in length and encodes 287 amino acids. The calculated molecular mass of translated protein of proPO and cMnSOD is 75.8 kDa and 31.3 kDa with an estimated pI of 6.08 and 5.82, respectively. Phylogenetic analysis of amino acid sequences showed that C. quadricarinatus proPO and cMnSOD are more closely related to the proPO and cMnSOD of other crayfish than to that of penaeids, crabs, lobsters, or freshwater prawns. Tissue distributation analysis revealed that the proPO is primarily expressed in hemocytes, gill and heart, though the higher expression levels of cMnSOD showed in hemocytes, gill and hepatopancrease. The crayfish artificially infected with WSSV all died within 4 days generally. However, there was no mortality in crayfish when infected with A. hydrophila. THCs significantly decreased in crayfish at 48 h and 72 h after the infection of WSSV compared to the PBS group. In contrast, THCs of crayfish after A. hydrophila challenge were recovered at 48 h and 72 h from the significantly lower level at 24 h. The expression level of proPO and cMnSOD transcripts in hemocytes varied greatly after the challenge of WSSV or A. hydrophila. After WSSV challenge, the expression of both genes were significantly up-regulated at 24 h, but down-regraulated at other time points including 6 h, 12 h, 48 h and 72 h. While after the infection of A. hydrophila, both genes transcripts only significantly increased at 12 h and 24 h compared with the PBS group. There were similiar responses for the enzyme activity toward WSSV and A. hydrophila infection. The PO activities per hemocyte significantly increased from 24 h to 72 h compared to the PBS group, and cMnSOD exhibited higher level later at 48 h and 72 h post virus and bacteria infection.
Rigg, Damian Peter. "Identify factors influencing the variability of survivorship of juvenile redclaw crayfish Cherax quadricarinatus (von Martens, 1898) in aquaculture." Thesis, 2021. https://researchonline.jcu.edu.au/69684/2/JCU_69684_Rigg_2021_thesis.pdf.
Full textRusaini. "Suppression subtractive hybridization to investigate viruses in the lymphoid organ of Penaeus merguiensis and the gills of Cherax quadricarinatus." Thesis, 2013. https://researchonline.jcu.edu.au/31250/1/31250_Rusaini_2013_volume1_thesis.pdf.
Full textYi-Liang, Tsai, and 蔡依良. "The effects of dietary cholesterol and lecithin levels on the growth and survival of Australian red claw crayfish (Cherax quadricarinatus)." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/443j64.
Full text國立嘉義大學
水生生物科學系研究所
106
A 2*3 factorial experiment was conducted to evaluate the effects of dietary cholesterol and phospholipids levels on the growth, survival, fatty acids composition, tissue triglycerol, cholesterol and phospholipids concentration. Basal diets supplemented with 0 or 0.5% cholesterol plus 0 or 2 or 4% phospholipids were fed to 120 individually reared Australian red claw crayfish (Cherax quadricarinatus) with initial weight of 12.0 g for 12 weeks. The results showed that survivals of all groups were higher than 85% and no difference was observed. There was no significant difference in weight gain among all groups (p >0.05) although the shrimps fed with combination of 0.5% cholesterol and 0% phospholipids had the highest WG. For the composition of the muscle, the amount of crude protein decreased as lecithin increased. Furthermore, for crayfish fed with cholesterol unsupplemented diet, there was a significant difference between in crude protein among group C0L4, and groups C0L0, and C0L2. There were no significant difference in ash, moisture, and crude lipid. Furthermore, no significant difference was observed in hepatopancreas composition. The fatty acids of eighteen carbons were the major composition in red claw crayfish hepatopancreas and muscle, respectively accounted for 64.8% and 48.7%. C18:2 fatty acid increased with lecithin supplemented, but no difference with cholesterol supplemented. There was no significant difference in muscle (p>0.05). When the diets phospholipids content was 8.1179 mg/kg, the C24:1 fatty acid in the muscle was significantly higher than the other groups. Moreover, cholesterol supplemented groups were significantly higher than no cholesterol supplemented groups (p<0.05).
Joyce, Melissa. "Understanding the nutritional requirements of redclaw (Cherax quadricarinatus): determining the apparent digestibility of raw materials and quantifying dietary lysine requirement." Thesis, 2020. https://researchonline.jcu.edu.au/69069/1/JCU_69069_Joyce_2020_thesis.pdf.
Full textLi, Yi-Ling, and 李宜玲. "Environmental impact of green water on the Australian freshwater crayfish (Cherax quadricarinatus) larvae growth rate, survival and physiological responses at high stock density." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/71016118099150682144.
Full text國立高雄海洋科技大學
水產養殖研究所
102
The cultivation of Cherax quadricarinatus, an Australian freshwater crustacean, has progressively developed in various locations; however, the species is cannibalistic, especially during the larval stage. green water culture has been developed for a long period; it is characterized by stable water quality and reduced visibility, which provide a suitable environment for culturing biological organisms. This study investigated the influence of green water environments on the survival rate and growth of Cherax quadricarinatus. In the experiment, the animals used were crayfish juveniles which just left from mother (juvenile III) and adult crayfish. Each tank has 100 juveniles crayfish and 10 adult crayfish in three replicates of four treatments (clean water, A; green water, B; clean water + shelter, C; green water + shelter, D) were carried out for 30 days. Following the experiments, the specific growth rates and growth Increment of Groups B and D were considerably higher than those of Groups A and C; the survival rate obtained from Group D (72%) was significantly higher than those of the other groups. The results from the clear water group samples showed stressed physiological responses, whereas the green water did not influence the health of the Cherax quadricarinatus. Thus, the introduction of algae and shields facilitated the cultivation of the Cherax quadricarinatus larvae.
(9875498), PS Aceret. "Culture strategies for redclaw, Cherax quadricarinatus (von Martens, 1868) (Decapoda: Parastacidae) and silver perch, Bidyanus bidyanus (Mitchell, 1838) (Perciformes: Teraponidae) : natural foods and artificial shelters." Thesis, 1997. https://figshare.com/articles/thesis/Culture_strategies_for_redclaw_Cherax_quadricarinatus_von_Martens_1868_Decapoda_Parastacidae_and_silver_perch_Bidyanus_bidyanus_Mitchell_1838_Perciformes_Teraponidae_natural_foods_and_artificial_shelters/13425929.
Full text(9830960), Brett Roe. "Ecologically engineered primary production in Central Queensland, Australia: Integrated fish and crayfish culture, constructed wetlands, floral hydorponics, and industrial wastewater." Thesis, 2005. https://figshare.com/articles/thesis/Ecologically_engineered_primary_production_in_Central_Queensland_Australia_Integrated_fish_and_crayfish_culture_constructed_wetlands_floral_hydorponics_and_industrial_wastewater/13420664.
Full text