Results 1 to 10 of about 13,119 (190)

Regulatory Mechanisms of Vitellogenesis in Insects [PDF]

open access: yesFrontiers in Cell and Developmental Biology, 2021
Vitellogenesis is pre-requisite to insect egg production and embryonic development after oviposition. During insect vitellogenesis, the yolk protein precursor vitellogenin (Vg) is mainly synthesized in the fat body, transported by the hemolymph through ...
Zhongxia Wu   +3 more
doaj   +3 more sources

Vitellogenesis

open access: yesJournal of Basic and Applied Zoology, 2013
Vitellogenesis in Orientocreadium batrachoides, an intestinal parasite of the catfish, Clarias gariepinus was investigated by transmission electron microscope. Four stages of vitellocyte development have been distinguished during vitellogenesis: (I) stem
A.A. Taeleb, G.H. Lashein
doaj   +2 more sources

Ovary Activation Dynamics in the Bean Weevil Zabrotes subfasciatus (Bruchinae): The Essential Roles of Seeds and Males [PDF]

open access: yesInsects
Phytophagous beetles, particularly those within the superfamilies Chrysomeloidea and Curculionoidea, constitute one of the most diverse and ecologically significant groups of insect herbivores.
Sílvia de Oliveira Miranda   +8 more
doaj   +2 more sources

Vitellogenesis and Embryogenesis in Spiders: A Biochemical Perspective [PDF]

open access: yesInsects
This review compiles information on the biochemistry of spider reproduction, from vitellogenesis to postembryonic development. Despite the diversity of spiders, biochemical studies on their reproduction remain scarce.
Carlos Fernando Garcia   +2 more
doaj   +2 more sources

Culex quinquefasciatus vitellogenesis: morphological and biochemical aspects [PDF]

open access: yesMemorias do Instituto Oswaldo Cruz, 2010
The vitellogenic process in Culex quinquefasciatus, which is triggered by a blood meal, involves the synthesis, distribution and storage of the nutrients necessary for embryo development. The fat body of an adult female Cx.
André F Cardoso   +4 more
doaj   +4 more sources

Transcriptome analysis of flathead grey mullet (Mugil cephalus) ovarian development induced by recombinant gonadotropin hormones

open access: yesFrontiers in Physiology, 2022
Background: Treatment with recombinant gonadotropin hormones (rGths), follicle-stimulating hormone (rFsh) and luteinizing hormone (rLh), was shown to induce and complete vitellogenesis to finally obtain viable eggs and larvae in the flathead grey mullet (
Sandra Ramos-Júdez   +7 more
doaj   +1 more source

Vitamin B12 Supplementation Improves Oocyte Development by Modulating Mitochondria and Yolk Protein in a Caffeine-Ingested Caenorhabditis elegans Model

open access: yesAntioxidants, 2023
Vitamin B12 is an essential cofactor involved in the function of two enzymes: cytosolic methionine synthase and mitochondrial methylmalonic-CoA mutase. In our previous studies, caffeine (1,3,7-trimethylxanthine), the most popular bioactivator, was shown ...
Hyemin Min   +3 more
doaj   +1 more source

Integrated transcriptomic and metabolomic analyses identify key factors in the vitellogenesis of juvenile Sichuan bream (Sinibrama taeniatus)

open access: yesFrontiers in Marine Science, 2023
Vitellogenesis is the most important stage of ovarian maturation in fish, involving the synthesis and transport of essential yolk substances and their complex mechanisms and coordination process.
Zhe Zhao   +14 more
doaj   +1 more source

The Role of DmCatD, a Cathepsin D-Like Peptidase, and Acid Phosphatase in the Process of Follicular Atresia in Dipetalogaster maxima (Hemiptera: Reduviidae), a Vector of Chagas' Disease [PDF]

open access: yes, 2015
In this work, we have investigated the involvement of DmCatD, a cathepsin D-like peptidase, and acid phosphatase in the process of follicular atresia of Dipetalogaster maxima, a hematophagous insect vector of Chagas' disease. For the studies, fat bodies,
Canavoso, Lilian Etelvina   +3 more
core   +7 more sources

Molecular Characterization Related to Ovary Early Development Mechanisms after Eyestalk Ablation in Exopalaemon carinicauda

open access: yesBiology, 2023
Eyestalk ablation is an effective method to promote ovarian development in crustaceans. Herein, we performed transcriptome sequencing of ovary and hepatopancreas tissues after eyestalk ablation in Exopalaemon carinicauda to identify genes related to ...
Shaoting Jia   +7 more
doaj   +1 more source

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