Log in

Relevant bibliographies by topics / Gambusia holbrooki / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Gambusia holbrooki.

Dissertations / Theses on the topic 'Gambusia holbrooki'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 32 dissertations / theses for your research on the topic 'Gambusia holbrooki.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Alemadi, Shireen. "DISPERSAL BEHAVIOR OF MOSQUITOFISH (GAMBUSIA HOLBROOKI)." Master's thesis, University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2910.

Full text

Abstract:

Mosquitofish (Gambusia holbrooki) are native to the southeastern United States but invasive elsewhere, and are dominant predators in many ecosystems that they inhabit. Information on dispersal behavior will help better understand and predict mosquitofish metapopulation dynamics and invasions. I experimentally tested dispersal behavior of individual mosquitofish under a range of laboratory conditions relevant to field situations. Preliminary experiments showed that gender, lighting conditions, hunger and acclimation time did not significantly affect net dispersal rate. Power analysis based on t

APA, Harvard, Vancouver, ISO, and other styles

2

Srean, Pao. "Understanding the ecological success of two worldwide fish invaders (Gambusia holbrooki and Gambusia affinis)." Doctoral thesis, Universitat de Girona, 2015. http://hdl.handle.net/10803/295975.

Full text

Abstract:

This thesis aims to contribute to the understanding of the invasive success of two invasive fishes (Gambusia affinis and G. holbrooki). We reviewed four Internet databases and the literature to clarify their introduction history and geographical distribution, establish their introduction routes, and analyse predictors of their invasive success. A meta-analysis of the ecological impacts of mosquitofishes shows that the overall impact is: i) similar for the two species; ii) clear and strong for fish, macroinvertebrates, amphibians, and some zooplanktonic groups and more variable for taxa at lowe

APA, Harvard, Vancouver, ISO, and other styles

3

McMillan, Michael. "Male mate preference in the eastern mosquitofish (Gambusia holbrooki)." View electronic thesis, 2008. http://dl.uncw.edu/etd/2008-1/mcmillanm/michaelmcmillan.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Gomes, Rita Manuel Viana Araújo Guimarães. "Efeitos da tetraciclina em Gambusia holbrooki: enzimas antioxidantes e alterações histopatológicas." Master's thesis, [s.n.], 2013. http://hdl.handle.net/10284/4098.

Full text

Abstract:

Projeto de Pós-Graduação/Dissertação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Ciências Farmacêuticas<br>O interesse crescente dos estudos ecotoxicológicos nas várias classes farmacoterapêuticas tem sido o reflexo da frequente deteção destes compostos nos ecossistemas aquáticos. Esta exposição pode resultar em alterações adaptativas dos indivíduos expostos, como modificações a nível tecidular ou ativação de mecanismos antioxidantes, podendo estas ser monitorizadas de modo a determinar o impacto destes compostos nos organismos e resp

APA, Harvard, Vancouver, ISO, and other styles

5

Agrillo, Christian. "La cognizione numerica degli animali: il Teleosteo Gambusia Holbrooki come modello sperimentale." Doctoral thesis, Università degli studi di Padova, 2008. http://hdl.handle.net/11577/3426379.

Full text

Abstract:

It has long been recognized that the ability to make numerical judgments predates the evolution of human language. In the last few decades, a large body of evidence has accumulated on numerical competence in mammal and birds, but little is known about the numerical abilities in lower vertebrates. The present research investigated numerical competence in fish, using both spontaneous choice test and training procedure. Results of free-choice test show that female mosquitofish seem to use two distinct systems for quantity discrimination; at the same time this study provides persuasive evidence

APA, Harvard, Vancouver, ISO, and other styles

6

Braga, Maria do Rosário da Silva Simões. "Efeitos tóxicos subletais de piritionato de zinco em parâmetros toxicológicos de Gambusia holbrooki." Master's thesis, [s.n.], 2013. http://hdl.handle.net/10284/4482.

Full text

Abstract:

Projeto de Pós-Graduação/Dissertação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Ciências Farmacêuticas<br>Atualmente, existem diversos grupos de agentes biocidas que podem ser utilizados em diferentes áreas, como por exemplo higiene, desinfeção, ação antiparasitária e anti-incrustantes, verificando-se assim um maior recurso à sua utilização pelo homem. Os compostos biocidas apresentam diversos usos, incorporando sobretudo tintas anti-incrustantes. O piritionato de zinco (bis (1 hidroxi -2 (1H)-piridetionato-o,s) - (T-4) zinco) classi

APA, Harvard, Vancouver, ISO, and other styles

7

Congdon, Brad. "The Maintenance of Genetic Diversity in Subdivided Populations of the Mosquitofish Gambusia holbrooki." Thesis, Griffith University, 1991. http://hdl.handle.net/10072/366206.

Full text

Abstract:

Sub-populations inhabiting the length of a stream may be subject to a number of substantially different spatial and temporal environmental influences. To be able to monitor the effects of localised disturbance throughout a catchment is of prime import, not only to the study of evolutionary processes, but also to the assessment of human intervention in catchment dynamics. To understand the ultimate effects of localised disturbance, either natural or man-maAe, on the evolution of sub-divided populations, it is essential to determine the patterns of genetic differentiation, the levels of genetic

APA, Harvard, Vancouver, ISO, and other styles

8

Carmona, Catot Gerard. "Explaining the invasive success of the eastern mosquitofish (Gambusia holbrooki): the role of temperature." Doctoral thesis, Universitat de Girona, 2013. http://hdl.handle.net/10803/129501.

Full text

Abstract:

The eastern mosquitofish (Gambusia holbrooki) is one of the most widely distributed and invasive inland fish. It is known that it has not been established in northern Europe or upstream of rivers, where the temperature is too low for survival and reproduction. This thesis examines how temperature affects the competitive ability and life history traits of mosquitofish. We sampled mosquitofish along latitudinal gradients and along rivers and we found that mosquitofish in more favorable environments (i.e. low latitudes and downstream river reaches) had a higher reproductive effort and lower body

APA, Harvard, Vancouver, ISO, and other styles

9

Alcaraz, Cazorla Carles. "Ecological interactions between an invasive fish (Gambusia holbrooki) and native cyprinodonts: the role of salinity." Doctoral thesis, Universitat de Girona, 2006. http://hdl.handle.net/10803/7868.

Full text

Abstract:

Actualment una de les principals amenaces a la biodiversitat és la introducció d'espècies. Revisant 26 variables de les 69 espècies de peixos continental de la Península Ibèrica concloem que la filogènia, variabilitat i els usos de l'home són necessaris per entendre millor les diferències entres les espècies natives i invasores.<br/>Entre les especies més afectades per la introducció de peixos es troben els ciprinodontiformes endèmics del Mediterrani. Aportem les primers dades sobre l'ús d'hàbitats ocasionalment inundats i la selecció de preses del fartet (Aphanius iberus), observant un canvi

APA, Harvard, Vancouver, ISO, and other styles

10

Cano, Rocabayera Oriol. "La invasió de Gambusia holbrooki en ecosistemes eutrofitzats. Dels mecanismes ecològics a la seva gestió." Doctoral thesis, Universitat de Barcelona, 2019. http://hdl.handle.net/10803/668318.

Full text

Abstract:

La introducció d’espècies invasores, juntament amb altres pertorbacions com l’augment dels nutrients, amenacen la biodiversitat nativa globalment. Les invasions biològiques d’espècies exòtiques es troben íntimament lligades a l’activitat humana, des de l’etapa inicial d’introducció en el nou hàbitat fins a l’establiment i l’expansió. La cerca dels factors ecològics i socioeconòmics que fan que una espècie introduïda esdevingui invasora i provoqui un impacte és l’objectiu fonamental de la ciència d’invasions biològiques. Aquesta tesi s’emmarca en el context d’una invasió d’un petit peix, la gam

APA, Harvard, Vancouver, ISO, and other styles

11

Coelho, Ana Sofia Caldas. "Avaliação enzimática e histológica dos efeitos decorrentes da exposição aguda ao diazepam em Gambusia holbrooki." Bachelor's thesis, [s.n.], 2011. http://hdl.handle.net/10284/2277.

Full text

Abstract:

Monografia apresentada à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de licenciada em Ciências Farmacêuticas.<br>A presença de compostos com capacidade neuroactiva nos ambientes aquáticos tem sido uma das principais preocupações dos ecotoxicologistas que avaliam os potenciais efeitos de fármacos nos organismos aquáticos. As alterações fisiológicas decorrentes da presença de resíduos de medicamentos de utilização humana nos diversos compartimentos ambientais são hoje em dia tema de pesquisa, em face das alterações eventualmente causadas nos organismos não alvo.

APA, Harvard, Vancouver, ISO, and other styles

12

Henriques, Sara Catarina Pereira. "Avaliação ecotoxicológica e histopatológica dos efeitos decorrentes da exposição aguda à fenitoína em Gambusia holbrooki." Bachelor's thesis, [s.n.], 2011. http://hdl.handle.net/10284/2815.

Full text

Abstract:

Trabalho apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Licenciada em Ciências Farmacêuticas<br>A libertação de compostos antropogénicos no meio ambiente tem merecido especial atenção, uma vez que alguns exibem conhecida actividade biológica. Entre os compostos antropogénicos encontrados no meio ambiente, os fármacos são muito frequentemente detectados, e podem ser responsáveis por alterações fisiológicas em organismos expostos. As alterações fisiológicas decorrentes da presença de resíduos de medicamentos nos diversos compartimentos ambientais sã

APA, Harvard, Vancouver, ISO, and other styles

13

Wang, Xiaobo. "Mate-copying and personality trait in the two fish species Danio rerio and Gambusia holbrooki." Thesis, Toulouse 3, 2016. http://www.theses.fr/2016TOU30057/document.

Full text

Abstract:

Le choix du partenaire sexuel est l'une des décisions les plus importantes auxquelles sont confrontés les animaux au cours de leur vie. Une manière pour un individu de choisir un partenaire sexuel est de copier le choix de ses congénères. Bien que décrit dans différentes espèces de vertébrés et chez la Drosophila, ce processus d'imitation du choix du partenaire reste malgré tout peu compris. L'objectif de ma thèse a été d'étudier la capacité des femelles à choisir leur partenaire sexuel par imitation dans deux espèces de poisson, le poisson zèbre (Danio rerio) et la Gambusie de l'Est (Gambusia

APA, Harvard, Vancouver, ISO, and other styles

14

Díez, del Molino David. "Genetic diversity and population structure of the non-native Eastern mosquitofish (Gambusia holbrooki) in Mediterranean streams." Doctoral thesis, Universitat de Girona, 2015. http://hdl.handle.net/10803/300440.

Full text

Abstract:

Mosquitofish is a small, voracious, highly fecund freshwater fish species originated from northeaster America, that was introduced worldwide to control mosquito populations. In this thesis we have studied the genetics of the invasion of Mediterranean streams by the mosquitofish (Gambusia holbrooki) to discover some of the aspects that drive their successfully invasive life history. Comparison of introduced populations with the American sources of invasion indicated that there was no loss of genetic diversity due to the invasion process. Local genetic diversity levels and overall population s

APA, Harvard, Vancouver, ISO, and other styles

15

Simion, Gabriele <1996&gt. "Analisi delle interazioni interspecifiche tra Aphanius fasciatus e Gambusia holbrooki a differenti salinità in ambiente controllato." Master's Degree Thesis, Università Ca' Foscari Venezia, 2022. http://hdl.handle.net/10579/21112.

Full text

Abstract:

Lo studio vuole analizzare le interazioni tra due specie ittiche, il nativo Aphanius fasciatus e l'alloctono Gambusia holbrooki, a due differenti concentrazioni di salinità, in ambiente controllato (acquari), al fine di identificare e quantificare le interazioni negative della seconda specie sulla prima, tramite due diversi piani sperimentali: - un test di competizione alimentare atto a valutare le variazioni del feeding rate e dell'aggressività al variare della salinità, tramite confronti tra trii; - un test di interazioni di gruppi a due differenti salinità, con uso di gruppi di controllo, p

APA, Harvard, Vancouver, ISO, and other styles

16

Drèze, Vincent. "Effets de deux perturbateurs endocriniens (le 4 nonylphénol et la 17α-ethynylœstradiol) chez un poisson, la Gambusie (Gambusia Holbrooki) : Étude à différents niveaux d'organisation biologique". Metz, 2001. http://www.theses.fr/2001METZ027S.

Full text

Abstract:

Les travaux présentés dans le cadre de notre travail de thèse nous ont permis d'évaluer les potentialités d'utilisation de la gambusie, poisson pœciliidœ, en écotoxicologie aquatique expérimentale dans une perspective d'analyse des effets des xénobiotiques à différents niveaux d'organisation biologique incluant la population. Les résultats obtenus nous ont permis de constater que : le 4-NP est activement métabolisé par la gambusie ; la différenciation sexuelle et la croissance des jeunes stades de gambusie sont altérées lors des expositions au 4-nonylphenol et à la 17α -ethynylœstradiol, se tr

APA, Harvard, Vancouver, ISO, and other styles

17

Gonçalves, Annie da Silva. "Avaliação ecotoxicológica e histopatológica dos efeitos do cloreto de benzalcónio no peixe mosquito (Gambusia holbrooki) após exposição aguda." Bachelor's thesis, [s.n.], 2010. http://hdl.handle.net/10284/8362.

Full text

Abstract:

Monografia apresentada à Universidade Fernando Pessoa para obtenção do grau Licenciada em Ciências Farmacêuticas<br>A poluição antropogénica de natureza química tem vindo a aumentar de forma considerável. A acção mais importante que os poluentes poderão exercer serão contribuir para o desenvolvimento de efeitos tóxicos, que pode decorrer da sua capacidade de interagir de forma deletéria com os sistemas biológicos. Os detergentes são compostos de origem antropogénica amplamente disseminados a nível ambiental, o que conduz à possibilidade de exercer alterações fisiológicas em organismos expostos

APA, Harvard, Vancouver, ISO, and other styles

18

Ruiz, Navarro Ana. "Biología de Gambusia holbrooki Girard en sistemas salinos epicontinentales (SE Península Ibérica): aspectos básicos y aplicados a su gestión." Doctoral thesis, Universidad de Murcia, 2011. http://hdl.handle.net/10803/48840.

Full text

Abstract:

El Poecílido Gambusia holbrooki, mundialmente introducido en sistemas acuáticos epicontinentales, presenta una alta capacidad invasora y supone una seria amenaza para las comunidades nativas. En la Península Ibérica, destaca su impacto sobre los Ciprinodóntidos nativos, aunque también supone una amenaza para los sistemas salinos, principalmente en regiones áridas. Para contribuir al establecimiento de criterios científicos para el manejo de esta especie, la presente tesis doctoral aporta información básica sobre la estructura y parámetros de la biología de poblaciones habitantes de sistemas sa

APA, Harvard, Vancouver, ISO, and other styles

19

Balula, Tiago Luís Aparício. "Avaliação dos efeitos histológicos ao nível das brânquias e fígado no peixe mosquito (Gambusia holbrooki) após uma exposição a cloreto de benzalcónio." Master's thesis, [s.n.], 2011. http://hdl.handle.net/10284/2281.

Full text

Abstract:

Trabalho apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Ciências Farmacêuticas<br>A contaminação antropogénica dos ecossistemas aquáticos por uma classe emergente de poluentes, os resíduos de fármacos de utilização generalizada, tem sido um assunto de forte debate na comunidade científica internacional. Os fármacos reúnem características que os tornam um foco de crescente preocupação do ponto de vista ambiental e de saúde pública, visto possuírem actividade farmacológica, serem resistentes aos processos de metabolização, poderem sofrer f

APA, Harvard, Vancouver, ISO, and other styles

20

Peterson, Kylie, and n/a. "Environmental impacts on spawning and survival of fish larvae and juveniles in an upland river system of the Murray-Darling Basin." University of Canberra. Resource, Environmental & Heritage Sciences, 2003. http://erl.canberra.edu.au./public/adt-AUC20060713.121419.

Full text

Abstract:

Six rivers within the upper Mumbidgee catchment were sampled for larval and juvenile fish. The rivers represented both regulated and unregulated flow regimes and varied widely in size. There was wide variation in the larval fish communities supported by each river, both in terms of the species diversity and total abundance of fish sampled. The highly regulated reach of the Mumbidgee River sampled during this study had the highest numbers of native species and native individuals of any river sampled. In the two rivers selected for further study, the Murmmbidgee and Goodradigbee, there was a hig

APA, Harvard, Vancouver, ISO, and other styles

21

Arnett, Heather Ann. "Sources of ecologically important trait variation in Mosquitofish (Gambusia affinis and Gambusia holbroola)." Thesis, The University of Maine, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10294309.

Full text

Abstract:

<p> The study of contemporary evolution and eco-evolutionary dynamics is classically defined in terms of genetic evolution, but the actual suite of processes driving contemporary trait change is likely much more complex than often credited. This dissertation considers additional mechanisms of trait change that might be important to an emerging model system for study of contemporary evolution and eco-evolutionary dynamics. Specifically, the research focuses on phenotypically plastic and demographic trait variation in Eastern and Western Mosquitofish (<i>Gambusia affinis</i> and <i>G. holbrooki<

APA, Harvard, Vancouver, ISO, and other styles

22

Mieiro, Cláudia Leopoldina de Brito e. Veiga Rodrigues. "Avaliação do comportamento trófico das populações de Gambusia, Gambusia holbrooki (Pisces, Poeciliidae), no baixo Mondego." Master's thesis, 2001. http://hdl.handle.net/10316/9855.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Mousavi, SE. "Sex differentiation and determination in the invasive fish, Gambusia holbrooki." Thesis, 2020. https://eprints.utas.edu.au/38319/1/Mousavi_whole_thesis.pdf.

Full text

Abstract:

The eastern mosquitofish, Gambusia holbrooki, is a freshwater viviparous fish that originates from North America. This along with its sister species G. affinis, were introduced throughout the world (i.e., over 110 countries), including Australia as mosquito control agents. Due to their high adaptability and tolerance, they have rapidly established populations in new ecosystems and caused decline in native aquatic fauna through competition and predation. For example, in Australia, G. holbrooki has been implicated in the decline of nine native fish species (genera Galaxias, Chlamydogobius, Melan

APA, Harvard, Vancouver, ISO, and other styles

24

Sousa, Maria de Jesus Rios. "Evaluation of the ecotoxicological effects of salinity and metformin in Gambusia holbrooki." Master's thesis, 2021. http://hdl.handle.net/10773/33456.

Full text

Abstract:

Aquatic ecosystems are threatened by factors related to climate change, leading to changes in the physical and chemical water properties. Between these changes, and as a consequence of global warming and extreme weather events, coastal systems are facing sudden fluctuations in salinity. Aquatic ecosystems are also threatened by organic and inorganic compounds that increase water pollution. Metformin is an antidiabetic drug commonly used by patients of diabetes type 2. It is also used as a treatment for polycystic ovary syndrome and as an anti-cancer drug. Metformin is not metabolized by the hu

APA, Harvard, Vancouver, ISO, and other styles

25

Norazmi, LNH. "Hormonal feminization and associated reproductive impacts in the eastern mosquitofish Gambusia holbrooki." Thesis, 2016. https://eprints.utas.edu.au/23069/1/Norazmi_whole_thesis.pdf.

Full text

Abstract:

The eastern mosquitofish Gambusia holbrooki has been listed in Australia as a noxious invasive species that requires control and eradication solutions on a large spatial scale. The Trojan Sex Chromosome (TSC) strategy has been proposed in recent years as a new genetic solution to control invasive aquatic species. The TSC approach involves the release of Trojan chromosome carriers, individuals produced via hormone sex reversal into the wild to skew the sex ratio of the population. As a first step towards applying the TSC strategy in G. holbrooki, this study systematically investigated and

APA, Harvard, Vancouver, ISO, and other styles

26

Lynch, KA. "Ecology, population genetics and risk assessment of the exotic mosquitofish, Gambusia holbrooki, in Tasmania." Thesis, 2008. https://eprints.utas.edu.au/20681/1/whole_LynchKerriAnn2008_thesis.pdf.

Full text

Abstract:

The Poeciliid fish, Gambusia holbrooki, a native of North America, has been deliberately introduced into many countries for the purpose of mosquito control. Extensively introduced on mainland Australia since the early 1900's, the fish was absent from the island state of Tasmania until it was illegally introduced in 1992. Since that time, the fish has spread throughout the Tamar Estuary in northern Tasmania. Surveys conducted from 2004-2006 revealed that the fish have spread naturally at the modest rate of less than 2 km per year. Populations showed synchronous birth of live young occurred in

APA, Harvard, Vancouver, ISO, and other styles

27

Tran, NK. "Effects of 17α‑methyltestosterone on sexual morphology, sex ratios and behaviour of Gambusia holbrooki". Thesis, 2021. https://eprints.utas.edu.au/45943/1/Tran_whole_thesis.pdf.

Full text

Abstract:

The eastern mosquitofish Gambusia holbrooki was introduced to Australia in 1928 from USA as a bio-control method for mosquitoes and has spread out over freshwater coastal and inland waters of Australia. It is an ineffective mosquito control agent but rather is responsible for depletion of several native and endangered fish and amphibians. Because of its severe negative impacts on native species, G. holbrooki is classed as an invasive species requiring control and eradication efforts. The Trojan Sex Chromosome (TSC) strategy has been suggested in recent years as a genetic control method for thi

APA, Harvard, Vancouver, ISO, and other styles

28

Klop-Toker, Kaya. "Assessing how multiple threats impact the green and golden bell frog for the purpose of improved conservation." Thesis, 2017. http://hdl.handle.net/1959.13/1337709.

Full text

Abstract:

Research Doctorate - Doctor of Philosophy (PhD)<br>The myriad of concurrent threats driving species declines make it difficult for managers to identify causal agents and preserve threatened populations. The decline of the green and golden bell frog (<i>Litoria aurea</i>) in Australia is an example of how multiple threatening agents such as the novel pathogen, <i>Batrachochytrium dendrobatidis</i> (Bd), invasive mosquitofish <i>Gambusia holbrooki</i>, and habitat degradation, can act independently or synergistically to rapidly decimate populations and prove difficult to manage. The broad focus

APA, Harvard, Vancouver, ISO, and other styles

29

"Ecological interactions between an invasive fish (Gambusia holbrooki) and native cyprinodonts: the role of salinity." Universitat de Girona, 2006. http://www.tesisenxarxa.net/TDX-0215107-141137/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Higgins, KL. "Social behaviour, aggression and the indirect effects of competition and predation in the fish species Galaxias maculatus and Gambusia holbrooki." Thesis, 2021. https://eprints.utas.edu.au/45567/1/Higgins_whole_thesis.pdf.

Full text

Abstract:

This study investigated interactions between native Galaxias maculatus and invasive Gambusia holbrooki, from the freshwater and tidally influenced wetlands of the kanamaluka/Tamar River system in cool temperate northern Tasmania. Galaxias maculatus is a valued species for human consumption and as a member of the ecosystem, and Gambusia is the target of an eradication program since its illegal introduction into the area in 1992, due to its detrimental impacts on the native habitat and the native fish and frog fauna. In addition to manual removal methods, the approach being developed (Trojan Y)

APA, Harvard, Vancouver, ISO, and other styles

31

Razmi, K. "Developmental dynamics of primordial germ cells, their genetic determinants and role in sex differentiation in Gambusia holbrooki." Thesis, 2022. https://eprints.utas.edu.au/47544/1/Razmi_whole_thesis.pdf.

Full text

Abstract:

Primordial germ cells (PGC) are the progenitors of life; they develop into gametes and safeguard gonad function in sexually reproducing animals. By virtue of diverse reproductive strategies, fishes provide an invaluable field to study germ cell emergence and fate. The current knowledge of PGC development in live-bearing fish (poeciliids) is limited and instead it is predominantly restricted to well-studied oviparous teleost models such as zebrafish, Danio rerio and medaka, Oryzias latipes. To address this basic knowledge gap and to assist future development of species-specific reproductive bio

APA, Harvard, Vancouver, ISO, and other styles

32

Cabral, João Alexandre Ferreira Abel dos Santos. "Risk assessment for a non-target species, mosquitofish (Gambusia holbrooki), of an alternative ecotechnological approach to control crayfish infestation in rice fields." Doctoral thesis, 2000. http://hdl.handle.net/10316/2142.

Full text

Abstract:

Tese de doutoramento em Biologia (Ecologia) apresentada à Fac. de Ciências e Tecnologia da Univ. de Coimbra<br>A aplicação do surfactante Genapol OXD-080, não-iônico e biodegradável, nos arrozais, tem sido considerado como parte de uma abordagem ecotecnológica para mitigar os danos causados pelo lagostim vermelho da Louisiana, Procambarus clarkii, na produção de arroz. O Genapol OXD-080 apresenta-se como menos tóxico que os pesticidas (ex: paratião) comumente usados, embora ilegalmente, pelos orizicultores para controlar a actividade do lagostim nos campos de arroz. De uma forma geral, os obje

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!