scholarly journals Influence of Dietary Experience on the Induction of Preference of Adult Moths and Larvae for a New Olfactory Cue

PLoS ONE ◽  
2015 ◽  
Vol 10 (8) ◽  
pp. e0136169 ◽  
Author(s):  
Christophe Petit ◽  
Bruno Le Ru ◽  
Stéphane Dupas ◽  
Brigitte Frérot ◽  
Peter Ahuya ◽  
...  
Keyword(s):  
Induction Of Preference ◽  
Olfactory Cue

Temperature and hunger mediate sablefish (Anoplopoma fimbria) feeding motivation: implications for stock assessment

2004 ◽  
Vol 61 (2) ◽  
pp. 238-246 ◽  
Author(s):  
Allan W Stoner ◽  
Erick A Sturm
Keyword(s):  
Water Temperature ◽  
Food Deprivation ◽  
Stock Assessment ◽  
Effective Area ◽  
Activity Level ◽  
Anoplopoma Fimbria ◽  
Feeding Motivation ◽  
Population Sizes ◽  
Increasing Temperature ◽  
Olfactory Cue

Laboratory experiments were conducted to test the hypothesis that temperature (2–8 °C) and recent feeding history (1–6 days of food deprivation) influence feeding motivation and attacks on baits by adult sablefish (Anoplo poma fimbria). Activity level after introduction of a bait-related olfactory cue increased with increasing water temperature and food deprivation. Fish at the lowest temperature (2 °C) attacked and consumed fewer squid baits (33–71%) than those at higher temperatures (100% at 8 °C). Baits were frequently inspected or handled multiple times before consumption in low temperatures, and time to attack (seconds to >40 min), time to consume, and time to handle baits (2–20 s) all decreased significantly with increasing temperature, with some temperature × feeding history interactions. The total ration consumed increased (<1–8% of body weight) with increasing water temperature. The observed variability in activity and feeding motivation in sablefish may have a large impact on the effective area of baited gear but is rarely considered in stock assessment models. In particular, population sizes based upon baited gear surveys may be underestimated in conditions where temperature is low, natural prey density is high, or where other environmental variables reduce feeding motivation.

scholarly journals Degeneration of the olfactory epithelium in the Anguilid eels by hormone treatment

2019 ◽  
Vol 3 (2) ◽  
pp. 48-51
Author(s):  
Ching Fui Fui ◽  
Gunzo Kawamura ◽  
Kazuhiko Anraku ◽  
Bensan Ali ◽  
Nabilah Zieha Sikh Mohamad ◽  
...  
Keyword(s):  
Sexual Maturation ◽  
Side Effect ◽  
Hormone Treatment ◽  
Japanese Eel ◽  
Silver Eels ◽  
Olfactory Cells ◽  
Mucus Cells ◽  
Olfactory Cue ◽  
Olfactory Rosette ◽  
Tropical Eels

While the olfactory cue hypothesis has been proposed for spawning migration of silver eels, it has been shown that olfactory cells and associated mucus cells degenerate in male and female eels after hormonally induced sexual maturation. However, the degeneration of the olfactory organ could be a real event in the sequence of maturation, or may be an unnatural side effect of the hormone treatment itself. We morphologically and histologically examined the olfactory rosettes of hormone-untreated and hormone-treated (mixture of hCG and PG) giant mottled eel (Anguilla marmorata) and Japanese eel (A. japonica). The olfactory rosette from all the hormone-treated specimens significantly degenerated at various degeneration levels even in sexually immature specimens, indicating the side effect of the hormone-treatment. However, a sexually immature non-hormone treated female A. marmorata (87.4 cm TL, 199.4 g BW, at less advanced maturity) had slightly degenerated olfactory rosette. Further studies should focus on conducting natural degeneration of the olfactory rosette during the sexual maturation in tropical eels.

Do I smell pot? A trial of an alternative paradigm of olfactory cue-reactance to marijuana

2013 ◽  
Vol 22 (3) ◽  
pp. 210-217 ◽  
Author(s):  
Mallory J. Loflin ◽  
Mitch Earleywine
Keyword(s):  
Olfactory Cue

scholarly journals Food Avoidance Learning in Squirrel Monkeys and Common Marmosets

1998 ◽  
Vol 5 (3) ◽  
pp. 193-203
Author(s):  
Matthias Laska ◽  
Karin Metzker
Keyword(s):  
Avoidance Learning ◽  
Visual Cues ◽  
Squirrel Monkeys ◽  
Olfactory Cues ◽  
Saimiri Sciureus ◽  
Common Marmosets ◽  
Food Avoidance ◽  
Robust Learning ◽  
Olfactory Cue ◽  
Potential Food

Using a conditioned food avoidance learning paradigm, six squirrel monkeys (Saimiri sciureus) and six common marmosets (Callithrix jacchus) were tested for their ability to (1) reliably form associations between visual or olfactory cues of a potential food and its palatability and (2) remember such associations over prolonged periods of time. We found (1) that at the group level both species showed one-trial learning with the visual cues color and shape, whereas only the marmosets were able to do so with the olfactory cue, (2) that all individuals from both species learned to reliably avoid the unpalatable food items within 10 trials, (3) a tendency in both species for quicker acquisition of the association with the visual cues compared with the olfactory cue, (4) a tendency for quicker acquisition and higher reliability of the aversion by the marmosets compared with the squirrel monkeys, and (5) that all individuals from both species were able to reliably remember the significance of the visual cues, color and shape, even after 4 months, whereas only the marmosets showed retention of the significance of the olfactory cues for up to 4 weeks. Furthermore, the results suggest that in both species tested, illness is not a necessary prerequisite for food avoidance learning but that the presumably innate rejection responses toward highly concentrated but nontoxic bitter and sour tastants are sufficient to induce robust learning and retention.

scholarly journals Reversibility of Multimodal Shift: Zebrafish Shift to Olfactory Cues When the Visual Environment Changes

2020 ◽  
Vol 60 (1) ◽  
pp. 33-42
Author(s):  
Piyumika S Suriyampola ◽  
Melissa Lopez ◽  
Brontë E Ellsworth ◽  
Emília P Martins
Keyword(s):  
Bright Light ◽  
Activity Level ◽  
Sensory Response ◽  
Opposite Pattern ◽  
Sensory Stimuli ◽  
Olfactory Responses ◽  
Lighting Conditions ◽  
Sensory Modalities ◽  
Complex Forms ◽  
Olfactory Cue

Synopsis Animals can shift their reliance on different sensory modalities in response to environmental conditions, and knowing the degree to which traits are reversible may help us to predict their chances of survival in a changing environment. Here, using adult zebrafish (Danio rerio), we found that 6 weeks in different light environments alone were sufficient to shift whether fish approached visual or chemical cues first, and that a subsequent reversal of lighting conditions also reversed their sensory preferences. In addition, we measured simple behavioral responses to sensory stimuli presented alone, and found that zebrafish housed in dim light for 6 weeks responded weakly to an optomotor assay, but strongly to an olfactory cue, whereas fish experiencing bright light for 6 weeks responded strongly to the visual optomotor stimulus and weakly in an olfactory assay. Visual and olfactory responses were equally reversible, and shifted to the opposite pattern when we reversed lighting conditions for 6 weeks. In contrast, we did not find a change in activity level, suggesting that changes in multiple sensory modalities can buffer animals from changes in more complex forms of behavior. This reversal of sensory response provides insight into how animals may use sensory shifts to keep up with environmental change.

The effect of experience and olfactory cue in an inhibitory control task in guppies, Poecilia reticulata

2019 ◽  
Vol 151 ◽  
pp. 1-7 ◽  
Author(s):  
Maria Santacà ◽  
Melania Busatta ◽  
Beste Başak Savaşçı ◽  
Tyrone Lucon-Xiccato ◽  
Angelo Bisazza
Keyword(s):  
Inhibitory Control ◽  
Poecilia Reticulata ◽  
Control Task ◽  
Olfactory Cue

scholarly journals The Induction of Larval Resource Preference in Heterogeneous Habitats

2018 ◽  
Author(s):  
Vrinda Ravi Kumar ◽  
Swastika Issar ◽  
Deepa Agashe
Keyword(s):  
Habitat Heterogeneity ◽  
Food Sources ◽  
Mobile Species ◽  
Heterogeneous Habitats ◽  
Flour Beetles ◽  
Resource Preference ◽  
Induction Of Preference ◽  
Resource Patches ◽  
The Impact ◽  
Alternative Resource

ABSTRACTAnimals often have to evaluate and choose between multiple food sources in their habitat, and these potentially complex decisions can have a large impact on their fitness. Among other factors, previous experience with an alternative resource can significantly increase subsequent preference for the resource ("induction of preference"). Such induction of resource preference is particularly relevant in spatially or temporally heterogeneous habitats. Although most mobile species – especially generalists – probably frequently encounter habitat heterogeneity, the impact of preference induction on individual behaviour and fitness in heterogeneous habitats is poorly understood. We analysed larval preference induction in wheat-adapted generalist red flour beetles (Tribolium castaneum) under three types of habitat heterogeneity. We first analysed the induction of larval preference for novel resources (other cereal flours) under temporal heterogeneity, exposing larvae to new resources during development. We found that larvae preferred a new resource if they experienced it recently, but that the magnitude of induction varied across resources. Interestingly, we also observed specific induction for a homogenous mix of wheat and a novel resource, with larvae preferring the mix over either pure resource. To analyse induction under spatial heterogeneity, we placed beetle eggs in one of two alternative resource patches and tested the preference of emerged larvae. Unexpectedly, hatching into a novel resource did not always induce preference. Finally, we found that induction of preference for new resources could be maladaptive for larval development. Together, our work demonstrates that experience-based plasticity of larval resource choice may strongly impact larval preference and fitness in heterogeneous habitats.

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