Concentrations of Inorganic Elements and Fatty Acids in Geographic Populations of the Spot Prawn Pandalus platyceros

1991 ◽  
Vol 48 (3) ◽  
pp. 382-390 ◽  
Author(s):  
J. N. C. Whyte ◽  
J. A. Boutillier
Keyword(s):  
Fatty Acids ◽  
Body Parts ◽  
Inorganic Elements ◽  
Metallic Elements ◽  
Ambient Seawater ◽  
Body Segments ◽  
Geographic Populations ◽  
Males And Females ◽  
Pandalus Platyceros ◽  
Spot Prawn

Inorganic elements and fatty acids were quantified in body segments of different size classes of the spot prawn Pandalus platyceros collected from various locations in British Columbia. Substantial differences in concentration of elements occurred in different body segments of the spot prawn, with the exoskeleton accumulating the highest number of quantifiable elements. Comparison of elements in abdomen carapace and tissue from immature males, mature males, and females indicated no correlation between element concentration and size, age, or sex of the spot prawn. Fatty acid profiles were similar for all body parts, except the hepatopancreas, and of the major fatty acids, only the content of 18:1n9 increased significantly with age of the spot prawn. Fatty acids and elements in the abdomen tissue of spot prawns from different locations were not significantly different and indicated similarity of diet irrespective of location. The concentrations of elements absorbed into the carapace of female spot prawns from separate geographic locations were substantially different, suggesting incorporation from elements in the ambient seawater, rather than uptake from diet, or any genetic variability associated with element metabolism in the spot prawn. The levels obtained for metallic elements in the spot prawn provide a measure against which future environmental impact could be assessed.

Mariculture potential of the spot prawn, Pandalus platyceros Brandt

Aquaculture ◽  
1977 ◽  
Vol 10 (1) ◽  
pp. 1-16 ◽  
Author(s):  
Randolph O. Kelly ◽  
Arthur W. Haseltine ◽  
Earl E. Ebert
Keyword(s):  
Pandalus Platyceros ◽  
Spot Prawn

scholarly journals Perilla frutescens: a potential ingredient for the enhancement of white bread as a source of Omega-3

2016 ◽  
Vol 38 (4) ◽  
pp. 399
Author(s):  
Marcos Vieira da Silva ◽  
Andréia Vieira da Silva ◽  
Elton Guntendorfer Bonafé ◽  
Nilson Evelázio de Souza ◽  
Jesuí Vergílio Visentainer
Keyword(s):  
Fatty Acids ◽  
Daily Intake ◽  
Perilla Frutescens ◽  
White Bread ◽  
Omega 3 Fatty Acids ◽  
Adult Males ◽  
Omega 3 ◽  
Alpha Linolenic Acid ◽  
Males And Females ◽  
Sensorial Attributes

Perilla frutescens seeds are rich in Omega-3 fatty acids which are important for human health. Intake of fatty acids depends on their presence in popular foods such as white bread. Current study evaluates the replacement of wheat flour by whole perilla at 1, 3 and 5% in white bread processing and its impacts on chemical and sensorial attributes, underscoring Omega-3 amounts. The use of whole perilla increases the Omega-3 content in white bread, balances the ratio n-6/n-3, decreases the specific volume, and maintains the concentration of phenolic compounds and antioxidant activity. The formulation with 1% whole perilla has a better acceptability and supplies 5.63 and 8.19% of the American recommended daily intake of alpha-linolenic acid for adult males and females, respectively. 

Relationships between the sex and degree of maturity of marine crustaceans and their lipid compositions

1973 ◽  
Vol 53 (1) ◽  
pp. 27-37 ◽  
Author(s):  
R. J. Morris
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Saturated Fatty Acids ◽  
Energy Reserves ◽  
Specific Difference ◽  
Marine Crustaceans ◽  
Polyunsaturated Acids ◽  
Males And Females ◽  
Degree Of Maturity ◽  
Gravid Females

The results of decapod lipid analyses have shown that females and gravid females generally contain high levels of monounsaturated acids and that the eggs of some of these decapods are composed mainly of phospholipid and triglyceride. These are probably present mainly as energy reserves. The percentages of saturated fatty acids are not found to vary with either maturity or sex, whereas the composition of the polyunsaturated acids are affected by both sex and maturity differences. Females are generally much lower in their content of polyunsaturated acids than juveniles and males, the males showing a greater requirement for 20:5 acid compared to the females.For the euphausiids there is a slightly different picture, the monounsaturated acids appear as the stable fraction and for Euphausia krohnii the juveniles are similar to the females in their content of the polyunsaturated acids.Neomysis integer is quite unlike the oceanic crustaceans showing a very specific difference in fatty acid composition between the males and females, the juveniles being rather intermediate in composition.

Quantitative Genetics of Drosophila Melanogaster. II. Heritabilities and Genetic Correlations between Sexes for Head and Thorax Traits.

Genetics ◽  
1988 ◽  
Vol 119 (2) ◽  
pp. 421-433
Author(s):  
D E Cowley ◽  
W R Atchley
Keyword(s):  
Drosophila Melanogaster ◽  
Sexual Dimorphism ◽  
Genetic Analysis ◽  
X Chromosome ◽  
Dosage Compensation ◽  
Imaginal Disc ◽  
Genetic Correlations ◽  
Body Parts ◽  
Quantitative Genetic ◽  
Males And Females

Abstract A quantitative genetic analysis is reported for traits on the head and thorax of adult fruit flies, Drosophila melanogaster. Females are larger than males, and the magnitude of sexual dimorphism is similar for traits derived from the same imaginal disc, but the level of sexual dimorphism varies widely across discs. The greatest difference between males and females occurs for the dimensions of the sclerotized mouthparts of the proboscis. Most of the traits studied are highly heritable with heritabilities ranging from 0.26 to 0.84 for males and 0.27 to 0.81 for females. In general, heritabilities are slightly higher for males, possibly reflecting the effect of dosage compensation on X-linked variance. The X chromosome contributes substantially to variance for many of these traits, and including results reported elsewhere, the variance for over two-thirds of the traits studied includes X-linked variance. The genetic correlations between sexes for the same trait are generally high and close to unity. Coupled with the small differences in the traits between sexes for heritabilities and phenotypic variances, these results suggest that selection would be very slow to change the level of sexual dimorphism in size of various body parts.

Note on Males' and Females' Preferences for Opposite-Sex Body Parts, Bust Sizes, and Bust-Revealing Clothing

1976 ◽  
Vol 38 (2) ◽  
pp. 485-486 ◽  
Author(s):  
Robert W. Wildman ◽  
Robert W. Wildman ◽  
Archie Brown ◽  
Carol Trice
Keyword(s):  
Young Women ◽  
Female Body ◽  
Body Part ◽  
Body Parts ◽  
Male Body ◽  
Opposite Sex ◽  
Males And Females

In Study 1, 55 young women responded that they preferred men with hairy chests and circumcised penises. The chest was the male body part reported to be most “sexually stimulating” to females. The busts were the female body part most “sexually stimulating” to males ( n = 34). In Study 2, men ( n = 35) preferred larger busts than women typically possess on the average, but the women ( n = 48) tended to overestimate the bust size most preferred by males. The ratings of bust-revealing clothing showed the males were more desirous of actually seeing the naked bust than females appear to realize.

Influence of Starvation and Subsequent Feeding on Body Composition and Energy Reserves in the Prawn Pandalus platyceros

1986 ◽  
Vol 43 (6) ◽  
pp. 1142-1148 ◽  
Author(s):  
J. N. C. Whyte ◽  
J. R. Englar ◽  
B. L. Carswell ◽  
K. E. Medic
Keyword(s):  
Physiological Condition ◽  
Abdominal Muscle ◽  
Whole Body ◽  
Energy Reserves ◽  
Major Energy Source ◽  
Wet Weight ◽  
Commercial Condition ◽  
Energy Assimilation ◽  
Pandalus Platyceros ◽  
Spot Prawn

Biochemical composition of body segments and physiological condition of the spot prawn (Pandalus platyceros) were determined during 84 d of starvation and 21 d of subsequent feeding. Maximum molting frequency, 1.79%∙d−1, occurred from day 22 to 43 and mortalities peaked at 0.81%∙d−1 on resumption of feeding. Ratios of wet weight of hepatopancreas to abdomen or whole body decreased on starvation and increased on feeding, and so provided an index of physiological condition. Uptake of moisture and chlorides with loss of other halides in prawn tissue resulted from starvation. Resting oxygen consumption rate declined by 50% after 40 d of starvation. Lipid in the hepatopancreas increased during early inanition to become the major energy source. Lipid contributed 73.1%, protein 20.6%, and carbohydrate 6.3% of total metabolized reserves. Hepatopancreas, carcass, and abdominal muscle generated 49.1, 33.4, and 17.5% of energy utilized. On subsequent feeding, lipid, carbohydrate, and protein accounted for 73.8, 20.1, and 6.1% of total caloric uptake with energy assimilation by body sections similar to depletion values. Spot prawn have sufficient reserves to remain in good commercial condition for 40 d without food.

Collective prey capture and feeding behaviours of Anelosimus jabaquara Levi 1956 (araneae: theridiidae)

Behaviour ◽  
2002 ◽  
Vol 139 (5) ◽  
pp. 573-584 ◽  
Author(s):  
Marcelo de Oliveira Gonzaga ◽  
João Vasconcellos-Neto
Keyword(s):  
Nutritional Value ◽  
Central Body ◽  
Prey Capture ◽  
Body Part ◽  
Medium Size ◽  
Body Parts ◽  
Predatory Behaviour ◽  
Body Segments ◽  
Body Sizes ◽  
Biomass Availability

AbstractIn this study we report on the predatory behaviour of Anelosimus jabaquara considering the frequency of bites in each prey body part during the immobilization phase, the proportion of the consumption time expended in each of these parts and the relative participation on capture and feeding processes by spiders of different body sizes. Generally, few individuals actively take part in prey immobilization events, biting mostly on fly's legs (body segments which promote vibrations strong enough to attract spiders, but not to dissuade attacks). However, many spiders usually take part in the consumption of this medium size prey item. During the consumption phase appendages were rarely used, probably due to the higher nutritional value and biomass availability of central body segments (thorax, abdomen and head). Non-aggressive contests over displaced prey body parts were frequently seen during collective feeding in natural colonies, but not in small artificial groups in laboratory.

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