Log in

Relevant bibliographies by topics / Larval stage / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Larval stage.

Dissertations / Theses on the topic 'Larval stage'

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 50 dissertations / theses for your research on the topic 'Larval stage.'

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

Jones, A. E. "Stage-structured insect population models of larval competition." Thesis, University of Strathclyde, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381490.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Cole, Alison G. "Cell-lineage of the larval CNS in the ascidian Ciona intestinalis, neurula stage through to hatched larva." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0021/MQ57277.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Saunders, Laura Margaret. "Infection strategies of gamebird macroparasites." Thesis, University of Stirling, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341230.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Matzilevich, David Avicenna. "Molecular analysis of superoxide dismutase and other antioxidant enzymes of Toxocara canis." Thesis, Imperial College London, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266226.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Lewis, Solange Smita. "Identification of stress-responsive genes in the early larval stage of the fathead minnow pimephales promelas." Cincinnati, Ohio : University of Cincinnati, 2005. http://rave.ohiolink.edu/etdc/view.cgi?acc_num=ucin1134665105.

Full text

Abstract:

Thesis (Ph. D.)--University of Cincinnati, 2005.<br>Advisor: Stephen Jay Keller. Title from electronic thesis title page (viewed Apr. 22, 2009). Keywords: fathead minnow; differential display; larvae; real-time PCR; copper; zinc; thermal stress; stress; gene expression. Includes abstract. Includes bibliographical references.

APA, Harvard, Vancouver, ISO, and other styles

6

Stanley, Jenni Anne. "Ambient underwater sound: measuring the importance of spatial viariability and its effect on late stage larval crabs." Thesis, University of Auckland, 2011. http://hdl.handle.net/2292/6975.

Full text

Abstract:

Recent studies have shown that underwater sound emanating from coastal reefs may be used for guiding the movements of a wide range of reef organisms to suitable settlement habitats. However, it is not known whether this underwater sound is also capable of mediating the settlement and metamorphosis processes in these organisms. The present study used laboratory- and field-based methods to determine whether ambient underwater sound is used as a settlement and metamorphosis cue in 10 species of larval crabs. The settlement stage larvae of five common crab species showed marked changes in swimming

APA, Harvard, Vancouver, ISO, and other styles

7

Lewis, Solange Smita. "Identification of Stress-Responsive Genes in the Early Larval Stage of the Fathead Minnow Pimephales Promelas." University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1134665105.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Almeida, Mara Cristina [UNESP]. "Desenvolvimento ontogenético larval e variabilidade populacional de Pimelodus britskii em um reservatório neotropical." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/143104.

Full text

Abstract:

Submitted by MARA CRISTINA DE ALMEIDA almeida (mara_macrisal@hotmail.com) on 2016-08-18T17:37:02Z No. of bitstreams: 1 TESE QUE VAI PARA BANCA final.pdf: 2216514 bytes, checksum: d47cfdeade85054b179e9c11c4c16e5b (MD5)<br>Rejected by Ana Paula Grisoto (grisotoana@reitoria.unesp.br), reason: Solicitamos que realize uma nova submissão seguindo a orientação abaixo: O arquivo submetido está sem a ficha catalográfica. O arquivo submetido não contém a folha de aprovação. A versão submetida por você é considerada a versão final da dissertação/tese, portanto não poderá ocorrer qualquer alter

APA, Harvard, Vancouver, ISO, and other styles

9

Lyncker, Lissa. "Abundance and Distribution of Early Life Stage Blue Crabs (Callinectes sapidus) in Lake Pontchartrain." ScholarWorks@UNO, 2008. http://scholarworks.uno.edu/td/848.

Full text

Abstract:

I conducted a 12-month study of near-shore habitats in Lake Pontchartrain to assess spatiotemporal variation in the abundance of early life stage blue crabs (Callinectes sapidus). Collections were made using a 1 m2 throw trap and data showed that C. sapidus numbers varied over time and among sites. Two recruitment events occurred during the study. During the first recruitment in May-June, C. sapidus entered Lake Pontchartrain via the Inner Harbor Navigational Canal. In September-October, C. sapidus entered the Lake Pontchartrain via the Rigolets and Chef passes. My data suggest that C. s

APA, Harvard, Vancouver, ISO, and other styles

10

MUNTONI, MANUEL. "A multidisciplinary approach for puzzling over fish connectivity in the Mediterranean Sea: The role of early life history stages of red mullet (Mullus barbatus)." Doctoral thesis, Università degli Studi di Cagliari, 2015. http://hdl.handle.net/11584/266564.

Full text

Abstract:

Integrating connectivity patterns into marine ecosystem management is a fundamental step, specially for stock subjected to the combined impacts of human activities (overfishing, habitat degradation, etc.) and climate changes. Thus, management of marine resources must incorporates the spatial scales over which the populations are connected. Notwithstanding, studying these dynamics remains a crucial and hard task and the predictions of the temporal and spatial patterns of these mechanisms are still particularly challenging. This thesis aims to puzzle over the red mullet Mullus barbatus populatio

APA, Harvard, Vancouver, ISO, and other styles

11

Foulon, Valentin. "Etude du phénomène d'adhésion chez la larve d'huître creuse Crassostrea gigas au stade pédivéligère." Thesis, Brest, 2018. http://www.theses.fr/2018BRES0094/document.

Full text

Abstract:

Les huîtres présentent un cycle de vie en deux phases : les larves pélagiques s’adhérent avant de se métamorphoser pour une vie benthique.L’adhésion larvaire se fait au stade pédivéligère par sécrétion d’un bioadhésif produit par un organe spécialisé : le pied. Bien que l’huître Crassostrea gigas soit un organisme d’importance économique et écologique, et un modèle d’étude en biologie marine, le phénomène d’adhésion chez la larve pédivéligère est peu documenté. Une étude morphologique des larves pédivéligères par histologie et microscopie électronique a été réalisée, afin de décrire les glande

APA, Harvard, Vancouver, ISO, and other styles

12

Walsh, Harvey Joseph. "Distribution of fall / winter-spawned larval fish in relation to hydrographic fronts on the North Carolina shelf implications for larval transport mechanisms /." NCSU, 2007. http://www.lib.ncsu.edu/theses/available/etd-06262007-095953/.

Full text

Abstract:

Fish population dynamics are partially determined by successful larval transport. Many fish in the southeast U.S. use estuaries as juvenile nursery habitat, but are spawned on the continental shelf. Favorable cross-shelf larval transport pathways for fall / winter-spawned species off North Carolina have been theorized to occur as a result of seasonal circulation patterns of currents and episodic onshore movement of water masses. As a result, hydrographic fronts which separate the water masses; including the outer-shelf front and mid-shelf front have been linked to cross-shelf larval transport

APA, Harvard, Vancouver, ISO, and other styles

13

Delves, C. J. "Developmental processes in filarial worms." Thesis, University of Liverpool, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377098.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Reed, James Edward. "Characterisation of secretion in the infective stage larvae of filarial nematodes." Thesis, University of Liverpool, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343693.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Boerseth, Cathrine. "Spatial dynamics and characterization of the ichthyoplankton community of natural and artificial reef environments on the coast of Paraná state, south Brazil." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/21/21134/tde-19122016-164859/.

Full text

Abstract:

Artificial reefs (ARs) have been deployed on the inner shelf of Paraná State, south Brazil, to recuperate marine biodiversity and as protection against destructive trawling activities. The purpose of this study was to offer a first characterization of the ichthyoplankton community associated with the ARs and the adjacent archipelago of Currais. Two sampling methodologies were used; 1) plankton net attached to an underwater scooter and; 2) light-traps. A hydrodynamic model was used to study dispersal trajectories to and from the study area. Sampling was conducted between 31.07.14 and 04.04.16.

APA, Harvard, Vancouver, ISO, and other styles

16

Ménard, Louise. "Aspects of the ecology of the larval stages of Cyathocotyle bushiensis Khan 1962 (Digenea)." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66176.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Medrano, Jennifer Centurion. "Chemotactic Response of Lumbricus terrestris Coelomocytes to Larval and Adult Stages of Rhabditis pellio." Thesis, University of North Texas, 1999. https://digital.library.unt.edu/ark:/67531/metadc5507/.

Full text

Abstract:

Experiments were performed to assess the suitability of Rhabditis pellio, a nematode found in earthworms, as a challenge organism for use in development of a biomarker assay to determine the potential of chemicals to suppress the immunocompetence of the non-specific immune system. To accomplish this goal, information on the life cycle of R. pellio was determined; including effects of incubation time and temperature on growth rates; along with information on the immune response elicited in the earthworm, Lumbricus terrestris. Immune parameters measured were coelomocyte migration toward and atta

APA, Harvard, Vancouver, ISO, and other styles

18

Albright, Rebecca. "Effects of Ocean Acidification on Early Life History Stages of Caribbean Scleractinian Corals." Scholarly Repository, 2011. http://scholarlyrepository.miami.edu/oa_dissertations/574.

Full text

Abstract:

Ocean acidification (OA) refers to the increase in acidity (decrease in pH) of the ocean’s surface waters resulting from oceanic uptake of atmospheric carbon dioxide (CO2). Mounting experimental evidence suggests that OA threatens numerous marine organisms, including reef-building corals; however, few studies have focused on the effects on early life history stages. Coral recruitment is critical to the persistence and resilience of coral reefs and is regulated by several early life processes, including: larval availability (gamete production, fertilization, etc.), larval settlement, post-settl

APA, Harvard, Vancouver, ISO, and other styles

19

Hopkins, Susan Marian. "Studies on survival and development of the larval stages of the trichostrongyle nematode "Nematospiroides dubius." Thesis, Royal Holloway, University of London, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.549680.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Duro, Lia Susana Lourenço Simões. "Parasitismo gastrintestinal em animais da Quinta Pedagógica dos Olivais. Especial referência aos mamíferos ungulados." Bachelor's thesis, Universidade Técnica de Lisboa. Faculdade de Medicina Veterinária, 2010. http://hdl.handle.net/10400.5/2624.

Full text

Abstract:

Dissertação de Mestrado Integrado em Medicina Veterinária<br>O presente estudo resultou do trabalho realizado durante e após o estágio curricular do Mestrado Integrado em Medicina Veterinária, na Quinta Pedagógica dos Olivais, no concelho de Lisboa. Numa primeira parte desta dissertação, efectuou-se uma monografia, relativa às parasitoses gastrintestinais mais relevantes dos mamíferos ungulados (suínos, bovinos, pequenos ruminantes e equídeos). Quanto à segunda parte desta dissertação, consistiu num estudo de campo e de laboratório sobre as parasitoses gastrintestinais do efectivo de mamífero

APA, Harvard, Vancouver, ISO, and other styles

21

Chiu, Man Ying. "Biological and ecological processes that intervene the larval and juvenile stages of the gastropod crepidula onyx /." View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?AMCE%202007%20CHIU.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Bruno, Trezia Ieda Ballerini. "Infecção de Biomphalaria glabrata com Angiostrongylus costaricensis : desenvolvimento larval e resposta hemocitaria." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/314681.

Full text

Abstract:

Orientador: Eliana Maria Zanotti-Magalhães<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Biologia<br>Made available in DSpace on 2018-08-05T18:40:54Z (GMT). No. of bitstreams: 1 Bruno_TreziaIedaBallerini_D.pdf: 6507064 bytes, checksum: 5515a1ea19ac4cfea55f25a3da2f2efa (MD5) Previous issue date: 2005<br>Resumo: Experimentalmente, Biomphalaria glabrata pode ser utilizada como hospedeiro intermediário do nematódeo Angiostrongylus costaricensis, responsável pela angiostrongilíase abdominal. Esta zoonose, descrita no Brasil principalmente nos estados sulinos, pode acometer

APA, Harvard, Vancouver, ISO, and other styles

23

MATELA, DA SILVA AIDOS MARIA LUCIA. "ADVANCES IN THE EARLY LARVAL STAGES OF SIBERIAN STURGEON: MUSCLE DEVELOPMENT AND STRUCTURE UNDER DIFFERENT REARING CONDITIONS." Doctoral thesis, Università degli Studi di Milano, 2019. http://hdl.handle.net/2434/623828.

Full text

Abstract:

Fish larval stages are particularly sensitive to environmental conditions, as these can severely affect survival and potential growth. In fish species destined for production and commercialisation, a suitable early environment is of great importance, for what concerns growth efficiency and quality at harvest. Temperature and stocking density are among the most important factors affecting the early stages of development, regarding somatic and muscle growth of fish. Moreover, environmental enrichment is considered to improve biological functioning of captive animals, including fish, by improving

APA, Harvard, Vancouver, ISO, and other styles

24

Chism, Billy Dell. "Laboratory evaluation of the horizontal movement of pyriproxyfen to larval microcosms by gravid Aedes albopictus (Skuse) and Aedes triseriatus (Say)." NCSU, 2001. http://www.lib.ncsu.edu/theses/available/etd-20010530-101221.

Full text

Abstract:

<p>Horizontal movement of the insect growth regulator (IGR) pyriproxyfen to larval microcosms by gravid container-inhabiting mosquitoes, Aedes albopictus (Skuse) and Aedes triseriatus Say, was evaluated under laboratory conditions. In larval susceptibility bioassays determining emergence inhibition (EI), both species were found to be highly susceptible to the IGR. Aedes albopictus exhibited an EI50 of 0.200 ppb, while Aedes triseriatus was 7 and 3.5x more susceptible with an EI50 of 0.0288 ppb. A randomized complete block experimental design was used for each species to evaluate the horizontal

APA, Harvard, Vancouver, ISO, and other styles

25

Gregory, William Francis. "Cloning and characterisation of genes expressed by the third stage larvae of the parasitic nematode Brugia malayi." Thesis, University of Edinburgh, 2000. http://hdl.handle.net/1842/14953.

Full text

Abstract:

Reverse transcription polymerase chain reaction (RT-PCR) of RNA from the infective larval stages of <i>Brugia malayi</i> with the nematode-specific 5' spliced leader sequence and oligo d(T) has been used to identify genes expressed during early larval stages. Products resolved on agarose gels show a number of prominent bands and cloning of these bands has revealed a total of 14 genes. Of these, four genes have been analysed in detail. One highly stage-specific transcript <i>Bm-cpi</i>-1, a cystatin-type cysteine proteinase has been characterised in parallel to a second, constitutively expresse

APA, Harvard, Vancouver, ISO, and other styles

26

Silver, Gregory Shell. "Investigations of Larval Pacific Lamprey Entosphenus tridentatus Osmotic Stress Tolerance and Occurrence in a Tidally-Influenced Estuarine Stream." PDXScholar, 2015. https://pdxscholar.library.pdx.edu/open_access_etds/2358.

Full text

Abstract:

Pacific lamprey is a culturally valuable species to indigenous people, and has significant ecological importance in freshwater and marine ecosystems. Over the past several decades, constrictions in range and reductions in Pacific lamprey abundance have been observed in Western North America, and may be indicators of range-wide declines. In the face of declining populations, the U.S. Fish and Wildlife Service has partnered with tribal, state, federal, and local entities to implement a regional Pacific lamprey conservation agreement aimed at reducing threats to Pacific lamprey and improving thei

APA, Harvard, Vancouver, ISO, and other styles

27

Balfour, David Leigh. "Ontogenetic Changes and Environmental Hypoxia: Responses of Two Fish Species to Low Oxygen Concentrations at Early Life Stages." Diss., Virginia Tech, 1999. http://hdl.handle.net/10919/26467.

Full text

Abstract:

Hypoxia refers to any condition in which the water is less than fully saturated with oxygen. Although it is generally accepted that adults are more tolerant of hypoxic conditions than larval stages, there is little information to support this assumption. To determine whether reduced concentrations of dissolved oxygen (DO) affect fishes differently during various early life stages, I examined the responses of two species of fish (fathead minnows (Pimephales promelas) and rainbow trout (Oncorhynchus mykiss)) exposed to low dissolved oxygen concentrations at different ages during the first 100

APA, Harvard, Vancouver, ISO, and other styles

28

Paula, Salete de. "Caracterização do desenvolvimento larval do pacu, Piaractus mesopotamicus (Holmberg, 1887): morfometria e crescimento isométrico." Universidade Estadual do Oeste do Parana, 2012. http://tede.unioeste.br:8080/tede/handle/tede/733.

Full text

Abstract:

Made available in DSpace on 2017-07-10T14:38:37Z (GMT). No. of bitstreams: 1 Salete de Paula.pdf: 1167747 bytes, checksum: 9705df79d28b7d3992e3d6910e9ce124 (MD5) Previous issue date: 2012-09-24<br>Fundação Araucária<br>This study describes the development and allometric growth patterns of larval Piaractus mesopotamicus from induced reproduction. From hatching until the 19th day, twenty individuals were selected for eight stage of development (yolk sac larval, preflexion, initial of flexion, flexion, end of flexion and post flexion). Later, morphometric measurements were taken of each individ

APA, Harvard, Vancouver, ISO, and other styles

29

Daniels, Carly. "Optimisation of the rearing diets for early life stages of the European lobster, Homarus gammarus, to enhance growth, survival and health using biotic dietary supplements." Thesis, University of Plymouth, 2011. http://hdl.handle.net/10026.1/551.

Full text

Abstract:

The series of experiments that comprises this thesis consider the use of prebiotics and probiotics to improve success in European lobster Homarus gammarus culture. Research was conducted at the National Lobster Hatchery and The University of Plymouth, UK between April 2007 and March 2010. Great potential was revealed for the application of biotics as dietary supplements in the culture of larval and juvenile H. gammarus. Specific biotics, namely; prebiotic mannon oligosaccharide (MOS) and probiotic Sanolife® (Bacillus spp.) were revealed to increase growth and survival during the culture of ear

APA, Harvard, Vancouver, ISO, and other styles

30

Smith, Kent James. "Enhanced Cold Tolerance of Diapause-Destined vs Non-Diapause-Destined Larval Stages of the Flesh Fly, Sarcophaga Crassipalpis(Diptera: Sarcophagidae)." Oxford, Ohio : Miami University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=miami1172780125.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Thoday, A. "Studies on the ultrastructure of the pituitary of a non parasitic lamprey Lampetra planeri throughout the larval, metamorphosing and adult stages." Thesis, Open University, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380056.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Lopes, Bruno de Sousa. "História natural e performance larval de Oospila pallidaria (Schaus, 1897) (Lepidoptera, Geometridae, Geometrinae): uma mariposa esmeralda do Cerrado." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/59/59131/tde-20072016-181713/.

Full text

Abstract:

São estimadas 90 mil espécies de insetos para o Cerrado, o segundo maior bioma brasileiro, com enorme heterogeneidade de habitats e rica fauna. Dentre esses insetos, os Lepidoptera representam cerca de 10% do total de espécies. Entretanto, estudos sobre seus imaturos (ovo, larva e pupa) ainda são incipientes para o bioma, principalmente sobre as mariposas, cujas histórias naturais de muitas espécies ainda são desconhecidas. A falta desses estudos faz com que sejam ignoradas as interações multitróficas em que esses organismos estão envolvidos e, portanto, inviabiliza futuros estudos relacionado

APA, Harvard, Vancouver, ISO, and other styles

33

Manceau, Dylan. "Feeding state-dependent neuropeptidergic modulation of a sensorimotor circuit biases non-feeding related decisions in Drosophila larva." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASL029.

Full text

Abstract:

La flexibilité comportementale, soit l'adaptation du comportement aux changements de l'environnement ou de l'état interne, est essentielle pour la survie et la reproduction des animaux. L'état alimentaire, en particulier, exerce une forte influence sur le comportement, même en dehors des décisions liées à la nourriture. Cependant, la manière dont l'information sur l'état alimentaire affecte les circuits de décision non directement liés à l'alimentation reste un sujet de recherche en neurosciences. Notre projet vise à éclairer ces relations entre états physiologiques, circuits neuronaux et comp

APA, Harvard, Vancouver, ISO, and other styles

34

Richardson, Shanthini Devi. "Studies on the life-cycle of the digenetic trematode Rhipidocotyle campanula (Dujardin, 1845) (Gasterostomata: bucephalidae) with particular reference to the larval stages." Thesis, University of Leeds, 1990. http://etheses.whiterose.ac.uk/723/.

Full text

Abstract:

The life-cycle of Rhipidocotyle campanula (Dujardin, 1845) has been experimentally demonstrated and the species identity confirmed. Sporocysts were recovered from digestive glands of the freshwater-mussel Anodonta anatina, and in heavily infected 'hosts from the reproductive, system. Both cercariae and glochidia are released simultaneously in mussels where the reproductive system is partly invaded by sporocyst tubules. The development of the cercariae in the sporocyst tubules has been studied briefly fusing histological and histochemical methods. The liberation of cercariae varied- between >10

APA, Harvard, Vancouver, ISO, and other styles

35

Marceta, Tihana. "Assessing the impacts of seawater acidification and emerging contaminants on different life stages of the sea urchin Paracentrotus lividus." Doctoral thesis, Università degli studi di Padova, 2018. http://hdl.handle.net/11577/3422674.

Full text

Abstract:

Ocean acidification, originated by rising atmospheric CO2 levels, represents one of the most important future threats in marine coastal areas. Several studies have provided data about the effects of low pH on single life stages in marine invertebrate species. Presently, there is an increasing effort to produce knowledge about responses from the entire life cycle of the organisms and across generations as well. This approach has the advantage of highlighting potential phenotypic plasticity and producing more realistic data at population level. Taking this into consideration, adult sea urchins

APA, Harvard, Vancouver, ISO, and other styles

36

Garcia, Sara Marie. "Sublethal Effects of Crude Oil and Chemical Dispersant on the Eastern Oyster (Crassostrea virginica) at Multiple Life History Stages." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7624.

Full text

Abstract:

Oil spills in the marine environment can threaten vulnerable ecosystems that support ecologically and economically significant organisms, such as the eastern oyster (Crassostrea virginica), in coastal habitats. The use of chemical dispersant (Corexit 9500) was applied as a cleanup effort in response to the Deepwater Horizon blowout to minimize crude oil slicks, but also resulted in increased concentrations of polycyclic aromatic hydrocarbons in the water column. The effects of increased soluble fractions of crude oil and dispersant components may be harmful to marine organisms. This study aime

APA, Harvard, Vancouver, ISO, and other styles

37

Ambu, Zaira. "Impact of Ocean Acidification on respiration and regenerative capabilities of Amphiura filiformis and on Ostrea edulis larvae stages." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2011. http://amslaurea.unibo.it/2113/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Lara, Monica R. "Sensory development in settlement-stage larvae of Caribbean labrids and scarids: A comparative study with implications for ecomorphology and life history strategies." W&M ScholarWorks, 1999. https://scholarworks.wm.edu/etd/1539616729.

Full text

Abstract:

The sensory capabilities of settlement-stage fishes are unknown but this information is necessary to studies of larval settlement and recruitment. The morphology of the cephalic lateral line, eye and external olfactory organ of thirteen species of settlement-stage Caribbean labroids was described. Scanning electron images of the cephalic lateral line neuromasts, lateral line canals and olfactory epithelia and histological studies of the retinae and morphological measurements of visual acuity were used to assess the level of sensory development attained at settlement. The sensory capabilities o

APA, Harvard, Vancouver, ISO, and other styles

39

Noble, Thomas H. "Effects of nitric and sulfuric-nitric acid solutions on mortality and development of aedes triseriatus mosquito larvae and pupae." Virtual Press, 1986. http://liblink.bsu.edu/uhtbin/catkey/452402.

Full text

Abstract:

An acid rain simulation was created under laboratory conditions to study the effects of mortality rates and developmental time of Aedes triseriatus (Say) mosquito larvae. Two hundred-forty instar 1 mosquitoes were placed into separate 120 ml glass jars containing rain water adjusted to pH 2, 3, 4, 5, 6, and 7 with a nitric acid solution. A second part of the experiment was set up like the first except a 70 percent to 30 percent sulfuric-nitric acid solution was used to adjust pH levels. Mortality and developmental time was observed until the insects reached maturity or died.No significant d

APA, Harvard, Vancouver, ISO, and other styles

40

Gravil, Helen Ruth. "Studies on the biology and ecology of the free swimming larval stages of Lepeophtheirus Salmonis (Kroyer, 1838) and Caligus Elongatus Nordmann, 1832 (Copepoda: Caligidae)." Thesis, University of Stirling, 1996. http://hdl.handle.net/1893/2380.

Full text

Abstract:

The study investigated biological and ecological parameters controlling and influencing the production and distribution of the free-swimming larval stages of Lepeophtheirus salmonis (Kroyer, 1838), and to a lesser extent Caligus elongatus Nordmann 1832, in the natural environment The reproductive output of L. salmonis was influenced by seasonal effects. The number of eggs produced per brood showed an inverse relationship with increasing temperature. The number of eggs per brood was also influenced by adult female body size (cephalothorax length), which in itself exhibited an inverse relationsh

APA, Harvard, Vancouver, ISO, and other styles

41

Chotipuntu, Piyapong, and n/a. "Salinity sensitivity in early life stages of an Australian freshwater fish, Murray cod (Maccullochella peelii peelii Mitchell 1838)." University of Canberra. Resource, Environmental & Heritage Sciences, 2003. http://erl.canberra.edu.au./public/adt-AUC20060331.115030.

Full text

Abstract:

The Murray cod (Maccullochella peelii peelii Mitchell 1838) is Australia�s largest freshwater fish. Once highly abundant in the Murray-Darling river system, populations have drastically declined in recent decades. Many causes for this decline have been proposed, including over-fishing, habitat loss and altered river flow regimes. This study hypothesised that elevated salinities have led to selective mortality in some developmental stages, which have in turn depleted stock recruitment and adult populations. The objectives of this study were to determine the optimal, threshold, upper sublethal a

APA, Harvard, Vancouver, ISO, and other styles

42

Wisch, Lucas Nataniel. "FLUTUAÇÃO POPULACIONAL DOS PRINCIPAIS NOCTUÍDEOS E DISTRIBUIÇÃO VERTICAL DE OVOS E LARVAS NA CULTURA DA SOJA." UNIVERSIDADE ESTADUAL DE PONTA GROSSA, 2011. http://tede2.uepg.br/jspui/handle/prefix/2215.

Full text

Abstract:

Made available in DSpace on 2017-07-25T19:29:49Z (GMT). No. of bitstreams: 1 LucasNatanaelWisch.pdf: 1535950 bytes, checksum: 7b05791c9aa7a46f71ea7e20db744589 (MD5) Previous issue date: 2011-10-31<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Soybean is one of the main oleaginous crop produced in Brazil. Studies on populational dynamic and immature stage vertical distribution in soybean canopy are very important to improve technology application and control timing. We studied population dynamics and vertical distribution of eggs and larvae of the velvetbean caterpillar, A

APA, Harvard, Vancouver, ISO, and other styles

43

Malarky, Lacey. "Faunal Composition and Distribution of Pelagic Larval and Juvenile Flatfishes (Teleostei: Pleuronectiformes) in the Northern Gulf of Mexico: Connectivity Between Coastal and Oceanic Epipelagic Ecosystems." NSUWorks, 2015. http://nsuworks.nova.edu/occ_stuetd/397.

Full text

Abstract:

Pleuronectiformes (flatfishes) occur throughout the global oceans, and have high ecological and commercial importance in some areas. Though much is known regarding life history, abundance, and distribution for the benthic adult stage of flatfish species, much less is known about the pelagic larval phases of flatfishes in the open ocean. Taxonomic uncertainty and limited sampling in the oceanic Gulf of Mexico contribute to data gaps with respect to the distribution of early life history stage of flatfishes in this region. Knowledge of the faunal composition, abundance and distribution of larval

APA, Harvard, Vancouver, ISO, and other styles

44

Blenzar, Abdelafi. "Effets d'un régulateur de croissance, le fénoxycarbe, sur le développement des larves du dernier stade de Psylla pyri (L.)." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37603071m.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Vagner, Marie. "Orientation des processus métaboliques du bar européen (Dicentrarchus labrax) par un conditionnement nutritionnel au stade larvaire." Brest, 2008. http://www.theses.fr/2008BRES2009.

Full text

Abstract:

Le but était de voir s’il est possible de stimuler les capacités de désaturation des acides gras pour la synthèse d’HUFA n-3 des juvéniles de bar par un conditionnement précoce. Lors d’une expérience 1 (F1), quatre groupes de larves ont reçu deux régimes de J6 à J45: LH (0,8% EPA+DHA) et HH (2,2%) à 16 ou 22°C. Après une période intermédiaire (2,7%, 19°C), la capacité des juvéniles à s’adapter à un régime carencé (0,5%) à été testée pendant 60 jours (19°C). L’expérience 2 (E2) avait pour but d’amplifier la réponse obtenue (une seul température d’élevage (19°C) et une gamme plus étendue de tene

APA, Harvard, Vancouver, ISO, and other styles

46

Kiselyova, Tatiana. "Systematics of Dermestidae (Insecta: Coleoptera) based on the larval stage." 2003. http://purl.galileo.usg.edu/uga%5Fetd/kiselyova%5Ftatiana%5Fg%5F200305%5Fphd.

Full text

Abstract:

Thesis (Ph. D.)--University of Georgia, 2003.<br>Directed by Joseph V. McHugh. Includes an article published in The coleopterists bulletin, and articles submitted to The coleopterists bulletin, and Annales zoologici. Includes bibliographical references.

APA, Harvard, Vancouver, ISO, and other styles

47

詹宗偉. "Taxonomic studies of the larval stage of Aeshnidae(Odonata) in Taiwan." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/83881845341361596870.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Lin, Sue-Cheng, and 林斯正. "Taxonomic studies of the larval stage of Libellulidae (Odonata) in Taiwan." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/79057745609287168237.

Full text

Abstract:

碩士<br>東海大學<br>生物學系<br>87<br>The larvae of 37 species belonging to 23 genera of the family of Libellulidae (Odonata) of in Taiwan are figured and described. Those species are Lyriothemis elegantissima Selys,1883, Lyriothemis flava Oguma,1915, Agrionoptera insignis similis Selys,1879, Cratilla lineata assidua Lieftinck,1953, Orthetrum glaucum (Brauer,1865), Orthetrum japonicum internum McLachlan,1894, Orthetrum luzonicum (Brauer,1868), Orthetrum melania (Selys,1883), Orthetrum pruinosum clelia (Selys,1878), Orthetrum pruinosum neglectum (Rambur,1842), Orthetrum sabina sabina (Drury,1770), Orthet

APA, Harvard, Vancouver, ISO, and other styles

49

Chou, Chi-Hsien, and 周季賢. "Purification and identification of antimicrobial peptides in larval stage of Lucilia porphyrina." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/50776000700144103441.

Full text

Abstract:

碩士<br>高雄醫學大學<br>生物化學研究所碩士班<br>93<br>Insects produce a variety of antimicrobial peptides when they are infected. Antimicrobial peptides play a pivotal role in the defenses of insects that lack an acquired immune system and protect them from invading microorganisms. They are known to be effective against a wide range of pathogens including bacteria, fungi, virus, and even antibiotic-resistant bacterial species. More than 800 different antimicrobial peptides have been isolated from species of all kingdoms. In this study, we want to find out a family of antimicrobial peptides (AMPs) from Chrysom

APA, Harvard, Vancouver, ISO, and other styles

50

Yu, Fabian. "Characterization of the C. elegans PLM Mechanosensory Neurons at the L1 larval stage." Thesis, 2012. http://hdl.handle.net/1974/7616.

Full text

Abstract:

Axon guidance is the developmental process where developing neurons navigate their processes based on attractive and repulsive cues. C. elegans has been an instrumental model in the study of neurobiology with one of the key benefits being a relatively simple nervous system which comprises of only 302 neurons. The Eph Receptors are a canonical class of axon guidance molecules and in C. elegans there is only Eph receptor VAB-1. To understand axon guidance it is useful to study the mechanosensory neurons, and in particular a pair of neurons called the PLM (Posterior Lateral Microtubule). In th

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!