Results 61 to 70 of about 7,646 (204)

New pathway of utilization of ammonia nitrogen for the synthesis of amino acids through NADH dependent transaminases in Bombyx mori L. [PDF]

open access: yes, 1992
NADH dependent transamination was recorded for the first time in silkworm Bombyx mori (L.) eggs and in larval tissues. L-Glutamine:2-oxoglutarate amino transferase (GOGAT) and L-asparagine:2-oxoglutarate amino transferase (AOGAT) were determined in ...
Krishnamoorthy, R.V.   +2 more
core   +1 more source

YTHDF3 Is Involved in the Diapause Process of Bivoltine Bombyx mori Strains by Regulating the Expression of Cyp307a1 and Cyp18a1 Genes in the Ecdysone Synthesis Pathway

open access: yesBiomolecules, 2022
The variable diapause features of bivoltine silkworm (Bombyx mori) strains regulated by environmental signals in the embryonic stage are closely related to epigenetics. Previously, we showed that the expression of YTHDF3 is significantly different in the
Yanhua Chen   +5 more
doaj   +1 more source

In utero domoic acid toxicity: a fetal basis to adult disease in the California sea lion (Zalophus californianus) [PDF]

open access: yes, 2008
California sea lions have been a repeated subject of investigation for early life toxicity, which has been documented to occur with increasing frequency from late February through mid-May in association with organochlorine (PCB and DDT) poisoning and ...
John Ramsdell   +87 more
core   +2 more sources

p53-mediated regulation of epiblast cell numbers predicts reactivation during mouse embryonic diapause

open access: yesCell Reports
Summary: Embryonic diapause is a temporary suspension of proliferation in mammalian pre-implantation embryos, allowing for reactivation later. Cells in mouse diapause embryos enter the G0 phase within 7 days of diapause initiation.
Megumi Murata   +7 more
doaj   +1 more source

Chemical Composition of the Eggs of the Freshwater Turtle Phrynops hilarii (Chelidae: Testudines) [PDF]

open access: yes, 2019
At oviposition, amniote eggs contain all the nutrients required for complete neonate tissue development. For reptiles and birds, the egg yolk is the main embryonic energy source and is composed predominantly of proteins and lipids, while also providing ...
Bernardi, Cecilia Gabriela   +3 more
core  

A roadmap to key traits of invasive Drosophilidae

open access: yesBiological Reviews, EarlyView.
ABSTRACT Biological invasions have intensified in recent decades, mostly driven by international trade and travel, raising significant concerns, particularly regarding insect pests. Once non‐native species establish, they can disrupt natural ecosystem stability, undermine agroecosystem sustainability and cause substantial economic losses.
Gwenaëlle Deconninck   +14 more
wiley   +1 more source

Fungal Ecdysteroid-22-oxidase, a New Tool for Manipulating Ecdysteroid Signaling and Insect Development [PDF]

open access: yes, 2012
Steroid hormones ecdysteroids regulate varieties of developmental processes in insects. Although the ecdysteroid titer can be increased experimentally with ease, its artificial reduction, although desirable, is very difficult to achieve.
Kamimura Manabu   +9 more
core   +1 more source

The history of the discovery of embryonic diapause in mammals [PDF]

open access: yesBiology of Reproduction, 2018
The first incidence of embryonic diapause in mammals was observed in the roe deer, Capreolus capreolus, in 1854 and confirmed in the early 1900s. Since then scientists have been fascinated by this phenomenon that allows a growing embryo to become arrested for up to 11 months and then reactivate and continue development with no ill effects. The study of
Jane C Fenelon, Marilyn B Renfree
openaire   +2 more sources

Regulatory mechanisms of reproduction in locusts and grasshoppers

open access: yesNew Plant Protection, EarlyView.
Regulatory networks composed of numerous coding and noncoding genes play crucial roles in the reproduction of locusts and grasshoppers. This review integrates mechanistic advances in reproductive regulation, highlighting environmentally adaptive pathways and providing prospective targets for eco‐friendly pesticides.
Jing He, Jiliang Wang, Xinran Wang
wiley   +1 more source

Adaptive plasticity of killifish (Fundulus heteroclitus) embryos: dehydration-stimulated development and differential aquaporin-3 expression [PDF]

open access: yes, 2009
13 pages, 7 figures, 3 tablesEmbryos of the marine killifish Fundulus heteroclitus are adapted to survive aerially. However, it is unknown if they are able to control development under dehydration conditions.
A Esteban   +52 more
core   +1 more source

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