Log in

Relevant bibliographies by topics / Diapause / Dissertations / Theses

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

Dissertations / Theses on the topic 'Diapause'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 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 'Diapause.'

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

Zola, Sheri. "Molecular events associated with mosquito diapause." Diss., Online access via UMI:, 2006.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

2

Flannagan, Ronald D. "Sarcophaga crassipalpis pupal diapause: A molecular approach /." The Ohio State University, 1997. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487946103566816.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Schiesari, Luca. "The dilp2/5 genes control diapause inducibility." Doctoral thesis, Università degli studi di Padova, 2013. http://hdl.handle.net/11577/3425834.

Full text

Abstract:

Many holometabolous insects hibernate by triggering diapause, an “actively-induced” dormancy that blocks developmental functions. Yet, the nature of signals enhancing the plasticity of developmental system and underlying diapause inducibility is still elusive. We show that the “Insulin/IGF” dilp2/5 genes, encoding for developmental hormones, antagonize diapause switch in D. melanogaster and their modulation is pivotal in sensitizing the developmental system to environmental perturbations. Functional impairment of dilp2/5 signaling results in the appearance, or inhibition, of the inducible diap

APA, Harvard, Vancouver, ISO, and other styles

4

Young, Curtis Eugene. "Diapause amd nutritional influences on reproduction and diapause induction in the elm leaf beetle, Xanthogaleruca luteola (Müller) (Coleoptera: chrysomelidae) /." The Ohio State University, 1991. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487693923198412.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

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

6

Larrère, Myriam. "Physiologie de la diapause imaginale du bourdon, Bombus terrestris : Essais d'obtention de colonies actives en toutes saisons." Bordeaux 1, 1993. http://www.theses.fr/1993BOR10535.

Full text

Abstract:

Nos efforts pour maitriser le cycle biologique du bourdon, bombus terrestris, nous ont conduit a etudier les mecanismes physiologiques impliques dans le controle de la diapause et de la reproduction. A l'issue de ce travail, nous sommes capables de proposer des methodes susceptibles d'interrompre a tout moment le processus de diapause. Parmi ces methodes, la narcose au co#2 s'avere particulierement efficace. La rupture de diapause s'accompagne de la reactivation des pericaryons neurosecreteurs cerebraux mais pas de celle des corpora allata. Nos resultats remettent en cause le role de l'hormone

APA, Harvard, Vancouver, ISO, and other styles

7

Williams, Karen Delores. "A genetic analysis of diapause in Drosophila melanogaster." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/NQ66369.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Lambert, Roger Thomas. "Embryonic diapause in European roe deer (Capreolus capreolus)." Thesis, University of Aberdeen, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.394554.

Full text

Abstract:

The total gestation period in the roe deer is approximately 290 days (10 months). When the blastocyst reaches the 20-30 stage it enters a 5-month period of diapause. During the last six weeks of diapause the blastocyst undergoes mitosis and reactivates in late December or early January at the 100-cell stage. The conceptus undergoes a period of rapid growth, which lasts between 7 and 25 days, before attachment to the endometrium and normal fetal growth. By studying the period between late diapause and early fetal development, it was possible to monitor changes in the reproductively important ho

APA, Harvard, Vancouver, ISO, and other styles

9

Martin, Anduaga Ane. "Diapause and the circadian clock in Drosophila melanogaster." Thesis, University of Leicester, 2018. http://hdl.handle.net/2381/42771.

Full text

Abstract:

As a strategy to survive to the upcoming winter, many insects enter diapause (a typical overwintering response that results on their developmental arrest). Drosophila melanogaster undergoes an adult or reproductive diapause that can be easily spotted by looking at the stage of development of the females’ ovaries. The possibility of the circadian clock influencing this phenotype was proposed to explain photoperiodic differences in induction levels. Nevertheless, to the date the debate is still on. In this thesis, I looked at several canonical clock mutants and assessed their impact on diapause,

APA, Harvard, Vancouver, ISO, and other styles

10

Dolfi, Luca. "Cell dynamics during killifish embryos development and diapause." Doctoral thesis, Scuola Normale Superiore, 2016. http://hdl.handle.net/11384/86208.

Full text

Abstract:

In this work I used time lapse brightfield microscopy to investigate cells division’s kinetics during the first developmental stages of annual- and non-annual species belonging to the three different hylogenetic clades. Annual killifishes of all three clades had cleavage times significantly longer when compared to their non-annual sister taxa (average 35 min vs. average 75 min), showing, for the first time, that cell cycle rate during cleavage, a trait thought to be rather volutionary conserved can undergo convergent evolutionary change in response to variations in life-history.

APA, Harvard, Vancouver, ISO, and other styles

11

Andreatta, Gabriele. "Dormancy awakened: aminergic control of diapause in Drosophila." Doctoral thesis, Università degli studi di Padova, 2015. http://hdl.handle.net/11577/3424143.

Full text

Abstract:

Coping with adverse environmental conditions is one of the most crucial challenges for all living beings. The coupling between external cues and hormonal signaling is key to allow survivorship of individuals and insects in particular have been intensively studied to better understand this connection. Although the hormonal cascade that promotes insect development and reproduction is well known (insulin signaling - juvenile hormone – 20-Ecdysone), how this neuroendocrine axis is modulated by environmental stimuli remains still largely elusive. To deepen the molecular features of IIS-JH-20E axis

APA, Harvard, Vancouver, ISO, and other styles

12

Muhammad, Zanna. "Diapause in the nematodes Globodera rostochiensis and G. pallida." Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/46458.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Johnson, Bobbie. "Effect of stress and diapause in two Calliphoridae species." Thesis, University of Birmingham, 2013. http://etheses.bham.ac.uk//id/eprint/4200/.

Full text

Abstract:

Cultures of two Dipteran flies (Calliphora vicina (R-D) and C. vomitoria (L.)) were established to answer questions in regards to responses to thermal and desiccation stress, effects of diapause and the mechanisms which underpin diapause. The findings are divided in to two sections. Unequivocal new findings – Calliphora vomitoria were seen to depend on water being present in culture medium for increased survival. Furthermore, C. vomitoria were found to have lower desiccation resistance than C. vicina. Larvae of C. vicina and C. vomitoria showed different cold tolerance strategies, with C. vici

APA, Harvard, Vancouver, ISO, and other styles

14

Yoder, Jay Alan. "The impact of insect diapause on water balance physiology /." The Ohio State University, 1991. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487693923198332.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Saumweber, Whitley Joseph. "Energetic constraints on diapause in Calanus finmarchicus : implications for population dynamics in the Gulf of Maine /." View online ; access limited to URI, 2005. http://0-wwwlib.umi.com.helin.uri.edu/dissertations/dlnow/3188848.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Rockey, Sarah Jean. "A maternal effect which influences diapause in progeny of the flesh fly, Sarcophaga bullata /." The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487263399026876.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Hansen, Laura Genovese. "Examination of juvenile hormone esterase during the diapause syndrome of the cotton-boll weevil, Anthonomus grandis /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Richard, David Seward. "Endocrinology of photoperiodic diapause induction in two species of Diptera." Thesis, University of Edinburgh, 1987. http://hdl.handle.net/1842/11893.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Li, Aiqing. "Identification Of Proteins Associated With Insect Diapause And Stress Tolerance." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1211487603.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Salman, Md Habibur Rahman. "Diapause in the pine processionary moth (Thaumetopoea pityocampa): ecological significance." Doctoral thesis, Università degli studi di Padova, 2018. http://hdl.handle.net/11577/3421821.

Full text

Abstract:

Pine processionary moth (PPM, Thaumetopoea pityocampa) is an active range expanding pest species having significant economic impact in terms of tree growth and public health. A lot is known about its natural history although one important aspect of its life history, diapause, has been so far neglected in spite of its acknowledged importance in pest establishment and dynamics. A few questions related to diapause have been addressed in this PhD project. Although the existence of prolonged diapause (PD) was reported long ago, no study provided its maximum duration. We provide evidence of existe

APA, Harvard, Vancouver, ISO, and other styles

21

Mulye, Hemendra S. "Physiological effects of non-diapause and diapause inducing photoperiods and of light quality on some hemolymph constituents of the tobacco hornworm, Manduca sexta (Lepidoptera, Sphingidae)." Thesis, University of Ottawa (Canada), 1986. http://hdl.handle.net/10393/5307.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Hilal, Abdelkader. "Diapause larvaire de Sesamia nonagrioides Lef. (Lep. Noctuidae) et diapause imaginale de Cassida vittata Wild (Col. Chrysomelidae) : mise en évidence, étude écophysiologique, endocrinologique et écologique." Bordeaux 1, 1988. http://www.theses.fr/1988BOR1A634.

Full text

Abstract:

L'etude des cycles biologiques de 2 ravageurs de plantes sucrieres, s. Nonagrioies et c. Vittata, montrent que ces 2 insectes subissent un arret de developpement dans les conditions naturelles. L'existence d'une diapause larvaire chez la sesamie et d'une diapause imaginale chez la casside a ete confirmee par des etudes en laboratoire. Les conditions d'induction, de developpement et de levee de ces 2 types de diapause ont ete precisees. Les seuils thermiques ainsi que les vitesses de developpement des differents stades de la sesamie, en fonction de la temperature, ont ete precises. La somme des

APA, Harvard, Vancouver, ISO, and other styles

23

Hilal, Abdelkader. "Diapause larvaire de Sesamia nonagrioides Lef. (Lep. noctuidae) et diapause imaginale de Cassida vittata Wild (col., Chrysomelidae) mise en évidence, étude écophysiologique, endocrinologique et écologique /." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37614355n.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Hilal, Abdelkader. "Diapause larvaire de Sesamia nonagrioides Lef. (Lep. Noctuidae) et diapause imaginale de Cassida vittata Wild (Col. Chrysomelidae) : mise en évidence, étude écophysiologique, endocrinologique et écologique." Bordeaux 1, 1988. http://www.theses.fr/1988BOR10641.

Full text

Abstract:

L'etude des cycles biologiques de 2 ravageurs de plantes sucrieres, s. Nonagrioies et c. Vittata, montrent que ces 2 insectes subissent un arret de developpement dans les conditions naturelles. L'existence d'une diapause larvaire chez la sesamie et d'une diapause imaginale chez la casside a ete confirmee par des etudes en laboratoire. Les conditions d'induction, de developpement et de levee de ces 2 types de diapause ont ete precisees. Les seuils thermiques ainsi que les vitesses de developpement des differents stades de la sesamie, en fonction de la temperature, ont ete precises. La somme des

APA, Harvard, Vancouver, ISO, and other styles

25

Cabrera, Ricardo Ramos. "Influência do fotoperíodo e da temperatura na diapausa comportamental de larvas não-alimentadas de Amblyomma cajennense (Acari: Ixodidae) provenientes de Pirassununga, São Paulo, Brasil." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/10/10134/tde-17062008-104457/.

Full text

Abstract:

A diapausa comportamental em carrapatos é caracterizada pela perda temporária da agressividade do indivíduo, tendo como conseqüência o prolongamento do período sem alimentação, sendo detectada em larvas de Amblyomma cajennense. Esta espécie destaca-se como principal vetor da Febre Maculosa no Sudeste brasileiro. Este estudo objetivou avaliar os efeitos do fotoperíodo e da temperatura na regulação da diapausa comportamental em larvas não-alimentadas de A. cajennense. Para isso, fêmeas ingurgitadas foram obtidas de eqüinos naturalmente infestados de Janeiro à Fevereiro de 2005 e 2006. No laborat

APA, Harvard, Vancouver, ISO, and other styles

26

Pri-Tal, Benjamin M. "Genomic and Hormonal Components of Altered Developmental Pathways in the Annual Killifish, Austrofundulus limnaeus." PDXScholar, 2010. https://pdxscholar.library.pdx.edu/open_access_etds/167.

Full text

Abstract:

The annual killifish, Austrofundulus limnaeus, may enter embryonic diapause at three distinct points of development, termed diapause I, II, and III. Previous studies suggest a role for steroid hormones in the regulation of diapause in annual killifish. This study concerns the hormonal and genomic components involved in the developmental decision to enter or escape diapause II from both a maternal and embryonic perspective. Steroid hormone levels were measured in tissues isolated from adult female fish that were producing either high or low proportions of escape embryos. Levels of steroid hormo

APA, Harvard, Vancouver, ISO, and other styles

27

Sarfati, Michal. "Diapause by seed predators and parasitoids in Chionochloa mast seeding communities." Thesis, University of Canterbury. Biological sciences, 2008. http://hdl.handle.net/10092/2194.

Full text

Abstract:

Chionochloa, a genus of snow tussock grasses native to New Zealand, exhibits pronounced mast seeding. Chionochloa suffers very high levels of pre-dispersal flower and seed predation by three main insects: Eucalyptodiplosis chionochloae, a cecidomyiid midge, which is formally described here; Megacraspedus calamogonus, a gelechiid moth and Diplotoxa similis, a chloropid fly. Seven species of parasitoids that attack these seed predators were discovered. Four species parasitize M. calamogonus (one tachinid fly and three hymenopteran wasps), one parasitizes D. similis (Hymenoptera: Eulophidae) and

APA, Harvard, Vancouver, ISO, and other styles

28

Discua, Duarte Samuel Andres. "Characterizing Prepupal Diapause and Adult Emergence Phenology of Emerald Ash Borer." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1366365415.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Tammariello, Steven P. "Isolation of diapause-associated clones from the flesh fly, sarcophaga crassipalpis /." The Ohio State University, 1998. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487949508370392.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Hermes, Robert. "Sonographie der Trächtigkeit beim Europäischen Reh (Capreolus capreolus) und Quantifizierung endometrialer Veränderungen während der Diapause mittels computergestützter Graustufenanalyse." [S.l.] : [s.n.], 1997. http://www.diss.fu-berlin.de/1998/53/index.html.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Duncan, Alison B. "Parasite mediated selection, sex and diapause in a natural population of Daphnia." Thesis, University of Edinburgh, 2006. http://hdl.handle.net/1842/1453.

Full text

Abstract:

Parasites are thought to have large effects on their host populations, driving genetic change, population density changes, speciation and be a major selective force maintaining sexual reproduction. Indirect signatures of parasite-mediated selection are common, but explicit examples of parasite-mediated selection in nature are lacking. In this thesis I examine parasite-mediated dynamics in a natural population of Daphnia magna that experiences an annual epidemic of the bacterial pathogen Pasteuria ramosa. I also test a novel hypothesis investigating the relationship between parasitism and the p

APA, Harvard, Vancouver, ISO, and other styles

32

Robich, Rebecca M. "Molecular characterization of adult diapause in the northern house mosquito, Culex Pipiens." The Ohio State University, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=osu1116954781.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Puiroux, Jacques. "Diapause et activités sécrétoires et métaboliques du cerveau chez la piéride du chou." Bordeaux 1, 1989. http://www.theses.fr/1989BOR10579.

Full text

Abstract:

Chez la pieride du chou, le cerveau percoit directement les variations de la photoperiode et determine le type de developpement, direct ou diapausant, en fonction de celles-ci. Pendant la fin de l'ontogenese en developpement direct, nous avons constate d'importantes modifications anatomiques et histologiques du systeme nerveux central. Par contre, la diapause nymphale s'accompagne rapidement d'une baisse d'activite du systeme nerveux, se traduisant par un blocage des transformations morphogenetiques et par un fort ralentissement de la liberation des produits de neurosecretion. Ce dernier pheno

APA, Harvard, Vancouver, ISO, and other styles

34

Lee, Kyeong-Yeoll. "Diapause regulation in pharate first instar larvae of the gypsy moth, lymantria dispar /." The Ohio State University, 1996. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487942182323837.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Rinehart, Joseph P. "Molecular and organismal aspects of insect diapause and acquired resistance to temperature stress /." The Ohio State University, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488193272066928.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Emerson, Kevin James. "Evolutionary and physiological genetics of biological timing /." Connect to title online (Scholars' Bank) Connect to title online (ProQuest), 2009. http://hdl.handle.net/1794/10286.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Douglas, Deborah Ann. "Luteotropic effects of prolactin on the mink (Mustela vison) ovary during embryonic diapause and early post-implantation gestation." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=42020.

Full text

Abstract:

These studies were conducted to determine the mechanisms by which prolactin (PRL) exerts its luteotropic effects on the mink corpus luteum (CL). Three experimental models were developed and utilized in these studies. In the first model, the ovaries from pregnant mink were collected at regular intervals throughout gestation, half the animals were treated with the dopamine agonist 2-bromo-$ alpha$-ergocryptine (bromocryptine), to suppress their endogenous PRL levels, and half were exposed to their endogenous PRL levels. The second model consisted of treating anestrous animals with exogenous gona

APA, Harvard, Vancouver, ISO, and other styles

38

Sachet, Jean-Marie. "Décalages temporels, spéciation et coexistance d'espèces au sein d'un groupe d'insectes phytophages : les mouches granivores des conifères Strobilomyia Michelsen (Diptera, Anthomyiidae." Université Joseph Fourier (Grenoble), 2006. http://www.theses.fr/2006GRE10186.

Full text

Abstract:

Les insectes phytophages spécialistes, compte tenu de leur considérable diversité spécifique, fournissent de nombreux mod~les pour l'étude des mécanismes de spéciation écologique. Le genre Strobilomyia nous a servi d'exemple pour évaluer l'importance de la spéciation par isolement temporel (ou allochronique) chez un insecte prédateur de graines et présente en effet une grande diversité écologique (trois genres de plante-hôte, plusieurs types phénologiques) et spécifique (20 espèces dont un nombre élevé d'espèces sympatriques exploitant le même hôte). Une première approche a consisté en la cons

APA, Harvard, Vancouver, ISO, and other styles

39

Silva, Patricia Nunes. "A organização e a ritmicidade no forrageamento e na enxameação de Plebeia remota (Holmberg, 1903) (Hymenoptera, Apidae, Meliponini)." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/41/41134/tde-22082007-155253/.

Full text

Abstract:

Os meliponíneos são abelhas que ocorrem nas regiões tropicais e subtropicais da Terra. Neste momento em que as mudanças globais atraem tanto interesse científico, consideramos oportuno o estudo detalhado da organização social de Plebeia remota, espécie de abelha que apresenta diapausa reprodutiva no outono e inverno. Embora outras pesquisas tenham sido realizadas nesta espécie, indicando principalmente os efeitos dos fatores abióticos sobre a atividade de vôo, a divisão de trabalho entre as operárias durante o forrageamento não tinha sido estudada, tanto no período de diapausa quanto no períod

APA, Harvard, Vancouver, ISO, and other styles

40

Toni, Lee S. "Characterizing the Molecular Changes of Austrofundulus limnaeus As It Develops Towards and Enters Diapause II." Thesis, University of North Texas, 2015. https://digital.library.unt.edu/ark:/67531/metadc822736/.

Full text

Abstract:

Austrofundulus limnaeus is a species of annual killifish which inhabits ephemeral ponds in South America. The species is able to survive seasonally desiccating ponds due to their ability to produce robust embryos. The embryos of this species are capable of entering a developmental arrest, termed diapause II, which precedes the onset of drought. While in this arrested state embryos exhibit the greatest tolerance to anoxia of any characterized vertebrate at 25ºC. Furthermore, when raised at 30ºC, embryos escape the entrance to diapause II and go on to develop directly. Currently, little is known

APA, Harvard, Vancouver, ISO, and other styles

41

Kalischuk-Tymensen, Lisa, and University of Lethbridge Faculty of Arts and Science. "Isolation and identification of genes expressed during diapause in horn fly, Haematobia irritans (L.)." Thesis, Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2001, 2001. http://hdl.handle.net/10133/133.

Full text

Abstract:

There is a discrepancy in the current literature concerning the stage of development in which horn flies arrest during pupal diapause. A study was therefore conducted to describe the morphologies of horn fly pupae and its central nervous system (CNS) throughout nondiapause pupal development and diapause. Morphologies of diapausing pupae and CNS indicated that developmental arrest occured early in pupal development during the interval between head eversion and pupal-adult apolysis. Morphological descriptions are necessary for defining compariable tissues between nondiapausing insects and diapau

APA, Harvard, Vancouver, ISO, and other styles

42

Tanzubil, Paul Bomber. "Diapause and population ecology of the stem borer, Coniesta ignefusalis (Hampson) in Northern Ghana." Thesis, University of Reading, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301975.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Karki, Puja. "Differential Expression of Genes During Diapause in the Flesh Fly, Sarcophaga crassipalpis." Digital Commons @ East Tennessee State University, 2009. https://dc.etsu.edu/etd/1818.

Full text

Abstract:

The objective of this study was to identify genes that are differentially regulated during diapause when compared with nondiapausing pupae in Sarcophaga crassipalpis. The results of a Suppression Subtractive Hybridization procedure was used to indentify genes that are differentially regulated in both diapause and nondiapausing states while suppressing genes that are common to both states. Randomly picked colonies from both subtractive libraries were isolated and the inserts sequenced. The sequences were analyzed using the bioinformatics tools NCBI, BlastX, Clustal W, etc. Out of 384 clones, 59

APA, Harvard, Vancouver, ISO, and other styles

44

Susset, Eline. "Importance des agrégations de diapause dans la reproduction de la coccinelle Hippodamia undecimnotata (Schneider) : (Coleoptera Coccinellidae)." Thesis, Toulouse 3, 2016. http://www.theses.fr/2016TOU30146/document.

Full text

Abstract:

Les causes évolutives de certaines formes de vie en groupe sont bien identifiées mais pas celles des agrégations de diapause des arthropodes (rassemblements monospécifiques d'adultes dans des sites à localisation constante). Dans cette thèse, j'ai testé si, selon l'hypothèse du lek caché, les arthropodes se rassemblent pour trouver leurs partenaires sexuels chez la coccinelle Hippodamia undecimnotata. J'ai montré que les coccinelles se rassemblent dans des endroits avec un repère proéminent et où le risque de pesticides est faible, puis que les conditions abiotiques dans les sites sont défavor

APA, Harvard, Vancouver, ISO, and other styles

45

Rousselet, Jérôme. "Déterminisme du sexe, diapause et évolution du caryotype chez les diprionidae (hyménoptères symphytes) : étude de de Diprion pini L., ravageur forestier à gradations éruptives." Tours, 1999. http://www.theses.fr/1999TOUR4006.

Full text

Abstract:

Les diprionidae constituent une petite famille d'hyménoptères symphytes, inféodée aux conifères. Ces insectes défoliateurs font partie des principaux ravageurs des forets de l'hémisphère nord. En Europe, diprion pini s'attaque à pinus sylvestris, la principale essence de pin. La dynamique des populations de cette espèce est caractérisée par d'impressionnantes explosions démographiques ponctuant de longues périodes pendant lesquelles les populations se maintiennent à un très faible niveau d'effectif. Cette thèse a eu pour objectif d'étudier des facteurs propres à l'insecte susceptibles d'expliq

APA, Harvard, Vancouver, ISO, and other styles

46

Zeller, Martina. "Population genetic consequences of a diapause a species comparison of two calanoid copepods (Eudiaptomus spec.) /." [S.l.] : [s.n.], 2006. http://e-diss.uni-kiel.de/diss_1817/d1817.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Pourchez, Arnaud. "Impact de la diapause sur la dynamique de communautés planctoniques dans un écosystème Arctique numérique." Master's thesis, Université Laval, 2018. http://hdl.handle.net/20.500.11794/29871.

Full text

Abstract:

L’Océan Arctique est l’un des environnements où l’on retrouve les plus fortes variations saisonnières au monde. L’un des outils utilisés pour représenter et comprendre de tels environnements variables sont les modèles biogéochimiques. Néanmoins, ces modèles n’ont qu’une représentation sommaire des espèces métazoaires, telles que les copépodes, qui représentent pourtant jusqu’à 80% de la biomasse totale du zooplancton arctique. De plus, les espèces de copépodes composant la majorité de cette biomasse ont développé un mécanisme leur permettant de bénéficier au maximum de la production primaire c

APA, Harvard, Vancouver, ISO, and other styles

48

Joplin, Karl H. "Protein expression in flesh flies (Sarcophaga) in response to heat shock, cold shock and diapause /." The Ohio State University, 1989. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487668215807964.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Woll, Steven Cody. "Insulin-like Growth Factor Pathway Described in Austrofundulus limnaeus Diapause and Escape Embryos." PDXScholar, 2016. https://pdxscholar.library.pdx.edu/open_access_etds/3207.

Full text

Abstract:

Development in the annual killifish Austrofundulus limnaeus can follow two distinct developmental trajectories. Typical development includes the entrance of embryos into a state of metabolic and developmental arrest termed diapause. Alternately, embryos can escape diapause and develop directly without pause. These two trajectories are characterized by differences in the rate and timing of developmental, morphological, and physiological traits. Insulin and Insulin-like growth factor (IGF) signaling (IIS) is known to regulate entrance into diapause in a variety of invertebrates. In this thesis I

APA, Harvard, Vancouver, ISO, and other styles

50

Toubon, Jean-François. "Variabilité géographique, valeur adaptative et sélection du caractère diapause nymphale estivale dans des populations européennes de Mamestra brassicae Linneus : Lepidoptera, Noctuidae." Aix-Marseille 3, 1991. http://www.theses.fr/1991AIX3A005.

Full text

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!