Does female feeding motivation affect the response to a food-mimicking male ornament in the swordtail characin Corynopoma riisei ?

2013 ◽  
Vol 83 (2) ◽  
pp. 343-354 ◽  
Author(s):  
M. Amcoff ◽  
N. Kolm
Keyword(s):  
Feeding Motivation ◽  
Male Ornament

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 Red Light Stimulates Feeding Motivation in Fish but Does Not Improve Growth

PLoS ONE ◽  
2013 ◽  
Vol 8 (3) ◽  
pp. e59134 ◽  
Author(s):  
Gilson L. Volpato ◽  
Thais S. Bovi ◽  
Renato H. A. de Freitas ◽  
Danielle F. da Silva ◽  
Helton C. Delicio ◽  
...  
Keyword(s):  
Red Light ◽  
Feeding Motivation

Feeding motivation as a personality trait in Nile tilapia (Oreochromis niloticus): role of serotonergic neurotransmission

2014 ◽  
Vol 40 (5) ◽  
pp. 1547-1557 ◽  
Author(s):  
Patricia I. M. Silva ◽  
Catarina I. M. Martins ◽  
Erik Höglund ◽  
Hans Magnus Gjøen ◽  
Øyvind Øverli
Keyword(s):  
Personality Trait ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Serotonergic Neurotransmission ◽  
Feeding Motivation ◽  
Nile Tilapia Oreochromis Niloticus

scholarly journals Identification of a Novel Hemolymph Peptide That Modulates Silkworm Feeding Motivation

2010 ◽  
Vol 286 (9) ◽  
pp. 7161-7170 ◽  
Author(s):  
Shinji Nagata ◽  
Nobukatsu Morooka ◽  
Kiyoshi Asaoka ◽  
Hiromichi Nagasawa
Keyword(s):  
Feeding Motivation

The effect of food related cues on the specificity of appetite in the rat

1998 ◽  
Vol 1998 ◽  
pp. 29-29
Author(s):  
J. E. L. Day ◽  
P. J. Rogers ◽  
G. M. Finch ◽  
E. A. Gaffan
Keyword(s):  
Diet Selection ◽  
Light Phase ◽  
General Increase ◽  
Feeding Motivation ◽  
Effect Of Food ◽  
Experimental Subjects ◽  
Standard Laboratory Diet ◽  
Feeding Bout ◽  
Light:Dark Cycle ◽  
Specific Food

It is known that if rats learn that a cue reliably precedes eating, its presentation can cause them to initiate a feeding bout when they are apparently sated (Weingarten, 1983, 1985). However, it is currently unclear precisely how such conditioned cues affect appetite. For example, does this type of conditioning elicit food specific appetites or do individuals merely experience a general increase in feeding motivation (Mela & Rogers, 1998)? To address this issue, the present experiment investigated the hypothesis that exposure to a cue (conditioned stimulus: CS) previously paired with a specific food biases diet selection in favour of that food when an individual is given a choice. The objective of the experiment was to enhance our understanding of the behavioural control of feeding, and hence our ability to predict diet selection and food intake.The experimental subjects were 12 male Lister-hooded rats (initial body-weight 233; SD=20g). Throughout the experiment the subjects were maintained on a 1lh:13h light:dark cycle with lights on at 0700h, and had ad libitum access to a standard laboratory diet during the light phase.

The effects of food level on general activity and aggression in dynamic groups of 30 sows

1995 ◽  
Vol 1995 ◽  
pp. 31-31 ◽  
Author(s):  
H.A.M. Spoolder ◽  
J.A. Burbidge ◽  
A.B. Lawrence ◽  
P.H. Simmins ◽  
S.A. Edwards
Keyword(s):  
Skin Lesions ◽  
Food Level ◽  
High Food ◽  
General Activity ◽  
Injury Score ◽  
Feeding Motivation ◽  
Large Groups ◽  
Feeding Systems

Aggression in group housed sows is often related to competition over food. Sequential feeding avoids the confrontations at the trough, but puts them at the feeder entrance. Studies of large groups of dry sows using computerised feeding systems showed that vulva biting was most frequent after visits when only a small amount of food had been dispensed (Buré, 1991). This suggests that frustrated feeding motivation may cause increased aggression. A Swedish survey into group housed sows found a link between sow condition and mean injury scores: farms averaging a high injury score had a larger proportion of thin sows (Svendsen et al., 1990). The present study aimed to investigate the hypothesis that in large dynamic groups of sows a high food level results in lower levels of aggression and associated skin lesions.

scholarly journals The biologically relevant unit for the analysis of short-term feeding behaviour of dairy cows

2000 ◽  
Vol 2000 ◽  
pp. 3-3
Author(s):  
D.P.N. Schweitzer ◽  
B.J. Tolkamp ◽  
I. Kyriazakis
Keyword(s):  
Dairy Cows ◽  
Feeding Behaviour ◽  
Gradual Increase ◽  
Daily Intake ◽  
Feed Consumption ◽  
Short Term ◽  
Biologically Relevant ◽  
Feeding Motivation ◽  
A New Technique ◽  
Log Normal

Study of short-term feeding behaviour (STFB) could improve the understanding of variation in daily intake in dairy cows. STFB is generally measured in short bouts (e.g. visits to feeders) that are clustered in larger bouts (or meals). The value of bout analysis depends strongly on the choice of an appropriate bout. Before bouts can be grouped into meals, a meal criterion (MC, that is: the longest non-feeding interval accepted as part of a meal) must be estimated. Tolkamp and Kyriazakis (1999) criticised existing methods and recently developed a new technique to estimate meal criteria. These log-normal models were developed on basis of the idea that eating bouts end when animals are satiated (i.e., in a state of low feeding motivation) (Tolkamp and Kyriazakis, 1999). This implies that feed consumption during the relevant eating bout will result in a gradual increase in satiety. This will be associated with an increase in the probability of cows ending a bout. In this study we will analyse whether meals are a more biologically relevant unit of STFB than the short feeding bouts (i.e. visits) that are routinely recorded.

scholarly journals Impact of nutrition on canine behaviour: current status and possible mechanisms

2007 ◽  
Vol 20 (2) ◽  
pp. 180-194 ◽  
Author(s):  
G. Bosch ◽  
B. Beerda ◽  
W. H. Hendriks ◽  
A. F. B. van der Poel ◽  
M. W. A. Verstegen
Keyword(s):  
Stress Resistance ◽  
Current Knowledge ◽  
Current Status ◽  
Contributing Factors ◽  
Problem Behaviour ◽  
Animal Shelters ◽  
Self Mutilation ◽  
Feeding Motivation ◽  
Underlying Mechanisms

Each year, millions of dogs worldwide are abandoned by their owners, relinquished to animal shelters, and euthanised because of behaviour problems. Nutrition is rarely considered as one of the possible contributing factors of problem behaviour. This contribution presents an overview of current knowledge on the influence of nutrition on canine behaviour and explores the underlying mechanisms by which diet may affect behaviour in animals. Behaviour is regulated by neurotransmitters and hormones, and changes in the availability of their precursors may influence behaviour. Tryptophan, the precursor of serotonin, may affect the incidence of aggression, self-mutilation and stress resistance. The latter may also be influenced by dietary tyrosine, a precursor to catecholamines. As diet composition, nutrient availability and nutrient interactions affect the availability of these precursors in the brain, behaviour or stress resistance may be affected. PUFA, especially DHA, have an important role as structural constituents in brain development, and dietary supply ofn-3 andn-6 PUFA could modify aspects of the dopaminergic and serotonergic system and, consequently, cognitive performance and behaviour. Finally, persistent feeding motivation between meals can increase stereotyped behaviour and aggression and decrease resting time. This feeding motivation may be altered by dietary fibre content and source. At present, few studies have been conducted to evaluate the role of nutrition in canine (problem) behaviour through the above mentioned mechanisms. Studies that explore this relationship may help to improve the welfare of dogs and their owners.

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