Eggshell Morphology
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Obtaining hydroxyapatite with different precursors for application as a biomaterial
Resumo A hidroxiapatita (HAp) é um biomaterial cerâmico com ampla aplicação na regeneração óssea. Pode ser obtida por diferentes rotas e diferentes precursores. Neste estudo, a síntese da HAp foi realizada por precipitação e tratamento térmico subsequente utilizando diferentes precursores de cálcio: hidróxido de cálcio de origem sintética e ó
Cerâmica. Publicado em: 2019-01
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2. Aspectos evolutivos da história de vida e estrutura da casca do ovo de lagartos tropiduríneos / Evolutive aspects of life history and eggshell morphology of Tropidurinae lizards
In lizards, life history components have great phenotypic plasticity and evolve in a correlated way. Clutch size, for example, tends to be positively correlated to body size of gravid females, when comparing different evolutive lineages or different individuals, though some kinds of habit seems to restrict larger clutches. There are indications that other fa
Publicado em: 2010
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3. Capillaria spp. eggs in Patagonian archaeological sites: statistical analysis of morphometric data
Discriminant analysis was used to identify eggs of Capillaria spp. at specific level found in organic remains from an archaeological site in Patagonia, Argentina, dated of 6,540 ± 110 years before present. In order to distinguish eggshell morphology 149 eggs were measured and grouped into four arbitrary subsets. The analysis used on egg width and length dis
Memórias do Instituto Oswaldo Cruz. Publicado em: 2008-02
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4. Ootaxonomic investigation of five Lutzomyia species (Diptera, Psychodidae) from Venezuela
The eggshell fine structure of five sand fly species from Venezuela belonging to the genus Lutzomyia (L. migonei, L. ovallesi, L. absonodonta, L. gomezi and L. panamensis) was examined by scanning electron microscopy. The chorionic sculpturing of L. migonei, L. ovallesi, L. absonodonta and L. gomezi was characterized by series of columns arranged in palisade
Memórias do Instituto Oswaldo Cruz. Publicado em: 2001-02
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5. Feedback control of the EGFR signaling gradient: superposition of domain-splitting events in Drosophila oogenesis
The morphogenesis of structures with repeated functional units, such as body segments and appendages, depends on multi-domain patterns of cell signaling and gene expression. We demonstrate that during Drosophila oogenesis, the two-domain expression pattern of Broad, a transcription factor essential for the formation of the two respiratory eggshell append
Company of Biologists.
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6. A Female Sterile Screen of the Drosophila Melanogaster X Chromosome Using Hybrid Dysgenesis: Identification and Characterization of Egg Morphology Mutants
We have conducted a hybrid dysgenic screen of the X chromosome for mutations affecting female fertility, with particular attention to those causing abnormal egg and eggshell morphology. In a screen of 4017 dysgenic strains, 398 mutants derived from 168 different germ lines were isolated and assigned to eight classes according to their diverse phenotypes. One
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7. okra and spindle-B encode components of the RAD52 DNA repair pathway and affect meiosis and patterning in Drosophila oogenesis
okra (okr), spindle-B (spnB), and spindle-D (spnD) are three members of a group of female sterile loci that produce defects in oocyte and egg morphology, including variable dorsal–ventral defects in the eggshell and embryo, anterior–posterior defects in the follicle cell epithelium and in the oocyte, and abnormalities in oocyte nuclear morphology. Many o
Cold Spring Harbor Laboratory Press.