Diel Changes in the Feeding Activity and Food Habits of the Spotfin Shiner, Notropis spilopterus (Cope)

1973 ◽  
Vol 90 (1) ◽  
pp. 200 ◽  
Author(s):  
Steven T. White ◽  
Dale C. Wallace
2001 ◽  
Vol 61 (2) ◽  
pp. 197-216 ◽  
Author(s):  
L. S. H. SOARES ◽  
A. E. A. de M. VAZZOLER

Food habits and daily feeding activity of fish populations are important ecological variables for understanding their role in the ecosystem. Diel changes in feeding activity and dietary composition of juvenile whitemouth croaker Micropogonias furnieri, shortfin corvina Isopisthus parvipinnis, shorthead drum Larimus breviceps and of juvenile and adult banded croaker Paralonchurus brasiliensis were investigated from samples taken over a 24 hours period from 4 to 5 September 1987 on the continental shelf off South-eastern Brazil. Whitemouth croaker and banded croaker had a benthic diet based on polychaetes and some caridean shrimps and showed no diel feeding pattern. Shortfin corvina and shorthead drum fed on crustaceans and teleostean fish, the former species primarily on pelagic sergestid shrimps and benthic caridean shrimps, and the latter mainly on pelagic sergestid shrimps, mysidacean and benthic caridean shrimps. Shortfin corvina is primarily a diurnal feeder, but preyed on some items only at night. Shorthead drum is a night feeder, with minimum stomach fullness values between dawn and daytime, and maximum values between dusk and night time.


Our Nature ◽  
2013 ◽  
Vol 10 (1) ◽  
pp. 119-127
Author(s):  
Syeda Mushahida-Al-Noor ◽  
Sheikh Kamruzzaman ◽  
Md. Delwer Hossain

The food habits of juvenile Lates calcarifer in the Shibsha river were investigated by examining the gastro-intestine contents of 720 specimens collected from June, 2010 to July, 2011. The major component of the diet was teleosts were dominant (32.40%) found in the stomach of Lates calcarifer. The next major food group were macro-crustacean (22.65%), followed by zooplankton (17.16%), algae (10.40%) and insects (9.89%). Monthly fluctuations were also witnessed in the percentage occurrence of stomachs with different degrees of fullness. It is evident that higher percentage of fullness of the stomach was recorded in pre-monsoon due to pre-spawning fattening process. Higher percentage of emptiness of the stomach was recorded in monsoon, due to starvation during breeding seasons. It is also observed that the percentage of stomach fullness was higher in summer than the percentage in winter in juvenile L. calcarifer..DOI: http://dx.doi.org/10.3126/on.v10i1.7772


1998 ◽  
Vol 23 (4) ◽  
pp. 382-387 ◽  
Author(s):  
James O. Ochanda ◽  
Eva A. C. Oduor ◽  
Rachel Galun ◽  
Mabel O. Imbuga ◽  
Kosta Y. Mumcuoglu

2003 ◽  
Vol 73 (6) ◽  
pp. 439-445 ◽  
Author(s):  
Navia ◽  
Ortega ◽  
Requejo ◽  
Perea ◽  
López-Sobaler ◽  
...  

A study was conducted on the influence of maternal education level on food consumption, energy and nutrient intake, and dietary adequacy in 110 pre-school children from Madrid, Spain. With increasing maternal education, children consumed more sugar (p < 0.05), fruit (p < 0.05), and fish (p < 0.05). Snacking was more frequent with decreasing maternal education (p < 0.05). Though statistical significance was not reached, the consumption of pre-cooked foods was greater among children of mothers educated to a higher level, a phenomenon probably related to the work situation of these women. With respect to dietary composition, no significant differences were found between groups for macronutrient, fiber and energy intakes, except for energy supplied by polyunsaturated fatty acids (PUFA), which was greater in the children of less educated women (p < 0.01). This is probably due to their greater consumption of sunflower seed oil. The diets of children belonging to well-educated mothers came closer to meeting the recommended intakes for folate, vitamin C, and iodine. It would seem that maternal educational level influences the food habits of children. Mothers with less education may require special advice in this area.


Author(s):  
Florian Javelle ◽  
Descartes Li ◽  
Philipp Zimmer ◽  
Sheri L. Johnson

Abstract. Emotion-related impulsivity, defined as the tendency to say or do things that one later regret during periods of heightened emotion, has been tied to a broad range of psychopathologies. Previous work has suggested that emotion-related impulsivity is tied to an impaired function of the serotonergic system. Central serotonin synthesis relies on the intake of the essential amino acid, tryptophan and its ability to pass through the blood brain barrier. Objective: The aim of this study was to determine the association between emotion-related impulsivity and tryptophan intake. Methods: Undergraduate participants (N = 25, 16 women, 9 men) completed a self-rated measure of impulsivity (Three Factor Impulsivity Index, TFI) and daily logs of their food intake and exercise. These data were coded using the software NutriNote to evaluate intakes of tryptophan, large neutral amino acids, vitamins B6/B12, and exercise. Results: Correlational analyses indicated that higher tryptophan intake was associated with significantly lower scores on two out of three subscales of the TFI, Pervasive Influence of Feelings scores r =  –.502, p < . 010, and (lack-of) Follow-Through scores, r =  –.407, p < . 050. Conclusion: Findings provide further evidence that emotion-related impulsivity is correlated to serotonergic indices, even when considering only food habits. It also suggests the need for more research on whether tryptophan supplements might be beneficial for impulsive persons suffering from a psychological disorder.


1990 ◽  
Author(s):  
Alan R. Kristal ◽  
Ann L. Shattuck ◽  
Holly J. Henry
Keyword(s):  

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