Pup exposure differentially enhances foraging ability in primiparous and nulliparous rats

2005 ◽  
Vol 84 (5) ◽  
pp. 799-806 ◽  
Author(s):  
K.G. Lambert ◽  
A.E. Berry ◽  
G. Griffin ◽  
E. Amory-Meyers ◽  
L. Madonia-Lomas ◽  
...  
Keyword(s):  
Foraging Ability

scholarly journals Ovipositor sources for queen-rearing of honey bee (Apis mellifera) revealed inheritable maternal effect on reared queen

2021 ◽  
Author(s):  
Longtao Yu ◽  
Xinxin Shi ◽  
Xujiang He ◽  
Weiyu Yan ◽  
Xiaobo Wu
Keyword(s):  
Honey Bee ◽  
Maternal Effects ◽  
Growth And Development ◽  
Reproductive Potential ◽  
Colony Growth ◽  
Bee Colony ◽  
Physiological Indexes ◽  
Foraging Ability ◽  
Honey Bee Colony ◽  
Weight Number

Abstract Queen is arguably the most important member of a honey bee colony, and queen quality is crucial for honey bee colony growth and development. In this study, queens were reared with eggs laid in queen cells (QE), eggs laid in worker cells (WE) and 2-day old larvae in worker cells (L). Those physiological indexes (the weight, thorax size and number of ovarioles) of newly reared queens in each group were measured. Moreover, the reproductive potential of the newly reared queens and foraging ability of worker bees laid by the newly reared queens in each group were further explored. In addition, we also examined whether maternal effects would be transmitted to the offspring queens in honey bee. We found that the weight, number of ovarioles and thorax weight of newly emerged queens in QE were significantly higher than those in WE and L, suggesting the reproductive potential was stronger in QE group than WE and L group. Furthermore, offspring worker bees and queens of QE queens had higher weight at emergence than those from the other two groups. This study proved profound honey bee maternal effects on queen quality, which can be transmitted to their offspring. Our results of the present study were important for improving queen quality and promoting the development of beekeeping and agriculture.

Effects of Clothianidin on Bombus impatiens (Hymenoptera: Apidae) Colony Health and Foraging Ability

2004 ◽  
Vol 97 (2) ◽  
pp. 369-373 ◽  
Author(s):  
Michelle T. Franklin ◽  
Mark L. Winston ◽  
Lora A. Morandin
Keyword(s):  
Bombus Impatiens ◽  
Foraging Ability

scholarly journals Effect of 9,12-Octadecadiynoic Acid on Neurobehavioral Development in Caenorhabditis elegans

2021 ◽  
Vol 22 (16) ◽  
pp. 8917
Author(s):  
Tun-Chieh Chen ◽  
How-Ran Chao ◽  
Ching-Ying Wu ◽  
Yun-Ru Lai ◽  
Chu-Huang Chen ◽  
...  
Keyword(s):  
Caenorhabditis Elegans ◽  
Breast Milk ◽  
Biological Function ◽  
Behavioral Development ◽  
Human Breast Milk ◽  
Related Gene ◽  
Human Breast ◽  
Neurobehavioral Development ◽  
Foraging Ability ◽  
Milk Lipids

Human breast milk lipids have major beneficial effects: they promote infant early brain development, growth and health. To identify the relationship between human breast milk lipids and infant neurodevelopment, multivariate analyses that combined lipidomics and psychological Bayley-III scales evaluation were utilized. We identified that 9,12-octadecadiynoic acid has a significantly positive correlation with infant adaptive behavioral development, which is a crucial neurodevelopment to manage risk from environmental stress. To further clarify the biological function of 9,12-octadecadiynoic acid in regulating neurodevelopment, Caenorhabditis elegans (C. elegans) was used as a model to investigate the effect of 9,12-octadecadiynoic acid on neurobehavioral development. Supplementation with 9,12-octadecadiynoic acid from the L1 to L4 stage in larvae affected locomotive behaviors and foraging ability that were not socially interactive, implying that 9,12-octadecadiynoic acid is involved in regulating the serotonergic neuronal ability. We found that supplementary 0.1 μM 9,12-octadecadiynoic acid accelerated the locomotive ability and foraging ability via increasing the expression of serotonin transporter mod-1. Antioxidant defense genes, sod-1, sod-3 and cyp-35A2 are involved in 9,12-octadecadiynoic acid-induced motor neuronal activity. Nevertheless, supplementary 9,12-octadecadiynoic acid at concentrations above 1 μM significantly attenuated locomotive behaviors, foraging ability, serotonin synthesis, serotonin-related gene expressions and stress-related gene expression, resulting in the decreased longevity of worms in the experiment. In conclusion, our study demonstrates the biological function of 9,12-octadecadiynoic acid in governing adaptive behavioral development.

Does internal egg carrying impair foraging ability as much as external egg carrying in a neotropical spider?

2019 ◽  
Author(s):  
Pietro Pollo ◽  
Claudia Sabrina Spindler ◽  
Luiz Ernesto Costa-Schmidt
Keyword(s):  
Maternal Care ◽  
Physiological State ◽  
Egg Load ◽  
Egg Carrying ◽  
Before And After ◽  
Foraging Ability ◽  
Paratrechalea Ornata ◽  
Per Se ◽  
Female Abdomen

Females not only produce costly gametes, but also store the eggs until oviposition, a period called pregnancy. The volume that eggs occupy in the female abdomen may decrease female foraging ability by making females slow. Although females of all species are subjected to these potential costs, it remains an unexplored matter in invertebrates. Females of the spider Paratrechalea ornata carry their egg sac after oviposition and thus represent a unique opportunity to evaluate pregnancy costs because females carry an extra volume before and after laying eggs. We conducted foraging ability experiments using P. ornata females on different treatments regarding pregnancy and maternal care. We first hypothesized that internal egg load and egg sac carrying decrease female foraging ability. We also hypothesized that greater egg sac size decreases female foraging ability. We found that both internal egg load and egg sac carrying decreased female foraging ability, and females about to oviposit had a similar foraging ability to females carrying an egg sac. Egg sac size did not influence female foraging ability. Our results show that pregnancy can impose high costs to female foraging ability, likely increasing their mortality during this period. The little support for our second hypothesis may also suggest that the decrease in foraging ability is not due to the volume being carried per se, but possibly an associated physiological state.

Turbidity and salinity influence trophic cascades on oyster reefs through modification of sensory performance and facilitation of different predator types

2020 ◽  
Vol 639 ◽  
pp. 127-136 ◽  
Author(s):  
JW Reustle ◽  
DL Smee
Keyword(s):  
Community Structure ◽  
Food Webs ◽  
Oyster Reef ◽  
Synergistic Effects ◽  
Abiotic Factors ◽  
Fish Predation ◽  
Reef Restoration ◽  
Physiological Tolerance ◽  
Salinity Levels ◽  
Foraging Ability

Abiotic factors can influence the distribution of organisms through physiological tolerance limits and by affecting their sensory performance in critical life history functions such as foraging or predator avoidance. In estuaries, salinity and turbidity directly influence the distribution of organisms but the indirect, synergistic effects of these factors on trophic interactions and community structure remain obscure. We investigated the effects of salinity and turbidity on oyster reef communities by comparing oyster reef community structure in low vs. high turbidity in consecutive years that varied considerably in rainfall and ambient salinity levels. Turbidity had significant effects in both 2016 and 2017 by interfering with fish foraging ability and consumption. In turbid sites, fish predation decreased by ~21%, crab mesopredators were 11% larger and nearly 5 times more abundant due to reduced top-down control by fish, and oyster reef biodiversity was 12% lower. In 2016, oysters were 350% less abundant in sites with abundant crab predators. However, in 2017, salinity increased, facilitating a new predator (oyster drills Stramonita haemastoma) to emerge onto reefs, and oysters were 7 times less abundant in sites with oyster drills despite having fewer crab predators. Thus, salinity and turbidity can indirectly affect food webs by facilitating different predators and influencing their sensory performance. Turbidity had significant effects on estuarine food webs regardless of salinity levels, and like salinity, turbidity should also be considered in oyster reef restoration and management of estuarine ecosystems.

scholarly journals Effects of age and reproductive status on individual foraging site fidelity in a long-lived marine predator

2017 ◽  
Vol 284 (1859) ◽  
pp. 20171068 ◽  
Author(s):  
Stephen C. Votier ◽  
Annette L. Fayet ◽  
Stuart Bearhop ◽  
Thomas W. Bodey ◽  
Bethany L. Clark ◽  
...  
Keyword(s):  
Site Fidelity ◽  
Foraging Strategies ◽  
Common Component ◽  
Small Component ◽  
Phenotypic Differences ◽  
Marine Predator ◽  
Global Positioning ◽  
Foraging Site ◽  
Foraging Ability ◽  
Foraging Specialization

Individual foraging specializations, where individuals use a small component of the population niche width, are widespread in nature with important ecological and evolutionary implications. In long-lived animals, foraging ability develops with age, but we know little about the ontogeny of individuality in foraging. Here we use precision global positioning system (GPS) loggers to examine how individual foraging site fidelity (IFSF), a common component of foraging specialization, varies between breeders, failed breeders and immatures in a long-lived marine predator—the northern gannet Morus bassanus . Breeders (aged 5+) showed strong IFSF: they had similar routes and were faithful to distal points during successive trips. However, centrally placed immatures (aged 2–3) were far more exploratory and lacked route or foraging site fidelity. Failed breeders were intermediate: some with strong fidelity, others being more exploratory. Individual foraging specializations were previously thought to arise as a function of heritable phenotypic differences or via social transmission. Our results instead suggest a third alternative—in long-lived species foraging sites are learned during exploratory behaviours early in life, which become canalized with age and experience, and refined where possible—the exploration-refinement foraging hypothesis. We speculate similar patterns may be present in other long-lived species and moreover that long periods of immaturity may be a consequence of such memory-based individual foraging strategies.

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