Results 31 to 40 of about 354,146 (300)

Morphological changes of gonad and gene expression patterns during desexualization in Dugesia japonica (Platyhelminthes: Dugesiidae)

open access: yesZoologia (Curitiba), 2018
Planarians, the representatives of an ancient bilaterian group with complex reproductive system and high regenerative capabilities, are model system suitable for studying the basic molecular requirements for the development of the reproductive system. To
Zimei Dong   +5 more
doaj   +1 more source

FOXO in Lymnaea: Its Probable Involvement in Memory Consolidation

open access: yesBiology, 2023
Food deprivation activates forkhead box O (FOXO), a transcription factor downstream of insulin receptors. In the pond snail Lymnaea stagnalis, insulin signaling and food deprivation improve memory consolidation following conditioned taste aversion (CTA ...
Junko Nakai   +4 more
doaj   +1 more source

Protective Effect of Melatonin against Inequality-Induced Da mages on Testicular Tissue and Sper m Para meters [PDF]

open access: yesInternational Journal of Fertility and Sterility, 2014
Background: The goals of the study are evaluation the effects of food deprivation and isolation situation as a social stress on fertility; and in the following, investigation of the improving effect of melatonin as an antioxidant component. Materials and
Shiva Nasiraei-Moghadam Nasiraei-Moghadam   +4 more
doaj  

Metabolic responses to long-term food deprivation in subterranean and surface amphipods [PDF]

open access: yesSubterranean Biology, 2020
A long-standing hypothesis in subterranean biology posits that organisms living in poor resource subsurface habitats can withstand long periods of bioenergetic shortages due to an innate reduced metabolic rate when compared to their epigean counterparts.
Parvathi Nair   +2 more
doaj   +3 more sources

The relationship between metabolic rate and sociability is altered by food-deprivation [PDF]

open access: yes, 2016
Individuals vary in the extent to which they associate with conspecifics, but little is known about the energetic underpinnings of this variation in sociability. Group-living allows individuals to find food more consistently, but within groups, there can
Fu, Cheng   +4 more
core   +1 more source

Ability to predict irregular periods of food depriviation improves body-weight regulation and reduces weight gain in food-insecure starlings

open access: yesRoyal Society Open Science
Food insecurity is associated with higher body weight in humans and other species, but the causal effect of unpredictable food availability on weight gain is unknown.
Charlotte Parker   +3 more
doaj   +1 more source

Effects of days-fasting and refeeding on growth, biochemical and histometric liver parameters in pacu Piaractus mesopotamicus [PDF]

open access: yesBrazilian Journal of Biology
This study evaluated the effects of days-fasting followed by days-refeeding on growth, biochemical, and hepatic parameters in pacu (Piaractus mesopotamicus). One hundred and twenty juveniles P. mesopotamicus with initial average weight and length of 47.7
K. N. N. Farias   +10 more
doaj   +1 more source

The effect of 4 weeks of continuous aerobic training with different volumes and starvation on the expression of some genes involved in liver mitophagy in healthy male Wistar rats [PDF]

open access: yesورزش و علوم زیست حرکتی
Introduction and Purpose: An increase in the number of defective mitochondria and their persistence can lead to apoptosis and necrosis of cells. Regular physical exercise along with time-restricted eating (TRE) can play an important role in improving ...
Hamzeh Bayani   +3 more
doaj   +1 more source

Ecological study of the association between socioeconomic inequality and food deserts and swamps around schools in Rio de Janeiro, Brazil

open access: yesBMC Public Health, 2023
Background Previous research suggests that unhealthy community food environments around schools contribute to unhealthy eating habits and negative health outcomes among the youth.
Bernardo Andretti   +6 more
doaj   +1 more source

Testing physiologically-based resource allocation rules in laboratory experiments with Daphnia magna Straus [PDF]

open access: yes, 2004
The rules governing the allocation of available resources to varying physiological processes are evaluated in three physiologically-based models of individual Daphnia.
Baird, D. J.   +2 more
core   +1 more source

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