scholarly journals The Bearing of Physiology on Economic Entomology

1912 ◽  
Vol 3 (4) ◽  
pp. 343-354 ◽  
Author(s):  
J. dewitz
Keyword(s):  
Growth And Development ◽  
Insect Pests ◽  
Animal Origin ◽  
Cultivated Plants ◽  
Physiological Research

The progress of applied Entomology is mainly visible in the discovery of practical means for the destruction of insects injurious to cultivated plants, and in the minute determination of the various stages of the growth and development of such insects. More recently the parasites of insect pests, both of vegetable and animal origin, have also largely attracted attention. But physiological research, so far as injurious insects are concerned, has almost entirely been overlooked and neglected; although this line of enquiry affords obvious opportunities for arriving at tbe very essence of the whole matter, and should indeed be made one of the main starting points in the study of insect pests.

Vitamin A Value of Plant Food Provitamin A - Evaluated by the Stable Isotope Technologies

2014 ◽  
Vol 84 (Supplement 1) ◽  
pp. 25-29 ◽  
Author(s):  
Guangwen Tang
Keyword(s):  
Stable Isotope ◽  
Vitamin A ◽  
Provitamin A ◽  
Animal Origin ◽  
Plant Food ◽  
Plant Foods ◽  
A Value ◽  
Provitamin A Carotenoids ◽  
Β Carotene

Humans need vitamin A and obtain essential vitamin A by conversion of plant foods rich in provitamin A and/or absorption of preformed vitamin A from foods of animal origin. The determination of the vitamin A value of plant foods rich in provitamin A is important but has challenges. The aim of this paper is to review the progress over last 80 years following the discovery on the conversion of β-carotene to vitamin A and the various techniques including stable isotope technologies that have been developed to determine vitamin A values of plant provitamin A (mainly β-carotene). These include applications from using radioactive β-carotene and vitamin A, depletion-repletion with vitamin A and β-carotene, and measuring postprandial chylomicron fractions after feeding a β-carotene rich diet, to using stable isotopes as tracers to follow the absorption and conversion of plant food provitamin A carotenoids (mainly β-carotene) in humans. These approaches have greatly promoted our understanding of the absorption and conversion of β-carotene to vitamin A. Stable isotope labeled plant foods are useful for determining the overall bioavailability of provitamin A carotenoids from specific foods. Locally obtained plant foods can provide vitamin A and prevent deficiency of vitamin A, a remaining worldwide concern.

scholarly journals Relationship Between Root and Yield Related Morphological Characters in Pea (Pisum Sativum L.)

2014 ◽  
Vol 66 (1) ◽  
pp. 3-15
Author(s):  
Sylwia Ciaglo-Androsiuk
Keyword(s):  
Root System ◽  
Morphological Traits ◽  
Lateral Roots ◽  
Morphological Characters ◽  
Yield Potential ◽  
Cultivated Plants ◽  
Genetic Determination ◽  
Canonical Correlations ◽  
Effect On Yield

AbstractRelation between morphological traits of the root system and yield related traits is an important issue concerning efforts aiming at improving of ideotype of cultivated plants species, including pea. In this paper, to analyse the dependency between traits describing the root system morphology and yield potential, Person’s andSpearman's_correlations as well as canonical correlations were used.Root system was analyzed in 14 and 21 day-old seedlings growing in blotting-paper cylinders. Yield potential of pea was analysed in a field experiment. Results of Person’s and Spearman's_correlations revealed that number of lateral roots and lateral roots density were correlated witch yield related traits. Correlation between root length and shoot length was observed only for 14 day-old seedlings. The result of canonical correlations revealed that number of lateral roots and lateral roots density had the largest effect on yield related traits. This work highlights, that in order to improve the yield of pea it might become necessary to understand genetic determination of morphological traits of the root system, especially number of lateral roots.

Rapid determination of trace methylmercury in natural crude medicine of animal origin

2008 ◽  
Vol 164 (3-4) ◽  
pp. 345-349 ◽  
Author(s):  
Mi-Ja Jung ◽  
Dong-Hyug Yang ◽  
Yong-Kyung Sung ◽  
Mi-Jeong Kim ◽  
Shin-Jung Kang ◽  
...  
Keyword(s):  
Rapid Determination ◽  
Animal Origin

scholarly journals Determination of antibiotic concentration in meconium and its association with fetal growth and development

2019 ◽  
Vol 123 ◽  
pp. 70-78 ◽  
Author(s):  
Yingya Zhao ◽  
Yuhan Zhou ◽  
Qingyang Zhu ◽  
Bing Xia ◽  
Wenjuan Ma ◽  
...  
Keyword(s):  
Fetal Growth ◽  
Growth And Development ◽  
Antibiotic Concentration

scholarly journals Diet components as internal indicators in the determination of the apparent digestibility coefficients for Nile tilapia

2017 ◽  
Vol 52 (6) ◽  
pp. 393-400
Author(s):  
Rafael Lopes da Silva ◽  
Eric Portilho de Araújo ◽  
Mariucha Karina Honório Ribeiro Rocha ◽  
Flavia Mota Damasceno ◽  
Jakeline Marcela Azambuja de Freitas ◽  
...  
Keyword(s):  
Nile Tilapia ◽  
Dry Matter ◽  
Neutral Detergent Fiber ◽  
Crude Fiber ◽  
Animal Origin ◽  
Apparent Digestibility ◽  
Plant Origin ◽  
Acid Detergent Fiber ◽  
Dunnett's Test

Abstract: The objective of this work was to evaluate the diet components - crude fiber, neutral detergent fiber, acid detergent fiber, hemicellulose, cellulose, and lignin - as internal indicators in the determination of the apparent digestibility coefficients of dry matter, gross energy, and of the nutrients - crude protein, phosphorus, and amino acids - in Nile tilapia (Oreochromis niloticus). Groups of ten juveniles (80.3±1 g) were randomly distributed in six tanks of 250 L and fed two practical diets, either of a plant-origin diet or of a plant- and animal-origin diet. Both diets were supplemented with 0.1% chromium (III) oxide (Cr2O3). Faeces were collected by the modified Guelph system. The apparent digestibility coefficients were determined by the content difference of the internal indicators, present in the diets and faeces, and compared by Dunnett’s test to those obtained by the use of Cr2O3. Cellulose was effective in the determination of the apparent digestibility of dry matter, energy, and nutrients of both experimental diets; and the acid detergent fiber was effective only for the diet composed exclusively of plant-origin ingredients. The use of crude fiber, neutral detergent fiber, hemicellulose, and lignin as digestibility indicators was inefficient for the analyzed nutrients of both diets. Therefore, cellulose is the most suitable indicator for digestibility evaluation in Nile tilapia.

scholarly journals Populasi Serangga Hama dan Artropoda Predator pada Padi Rawa Lebak Sumatera Selatan yang Diaplikasikan Bioinsektisida dari Beauveria bassiana dan Insektisida Sintetik

2019 ◽  
Vol 8 (1) ◽  
pp. 31-38
Author(s):  
Khoirul Ikhsanudin Hanif ◽  
Siti Herlinda ◽  
Chandra Irsan ◽  
Tili Karenina ◽  
Erise Anggraini ◽  
...  
Keyword(s):  
Beauveria Bassiana ◽  
Growth And Development ◽  
Rice Field ◽  
Insect Pests ◽  
Pest Insect ◽  
Synthetic Insecticide ◽  
Freshwater Swamp ◽  
Pest Insects ◽  
Predatory Insects ◽  
Predatory Arthropods

Hanif et al, 2019. Population of Pest Insects and Predatory Arthropods Inhabiting Freshwater Swamp Rice of South Sumatra Treated with Bioinsectide of Beauveria bassiana and a Synthetic Insecticide. JLSO (8)1:31-38.Entomopathogenic fungi, Beauveria bassiana, could  kill various species of insect pests, but  their impact on predatory arthropods needs to be studied. The aim of this study was to compare population of pest insects and predatory arthropods inhabiting rice sprayed with bioinsecticide of B. bassiana and conventional rice field using a synthetic insecticides. Bioinsecticide was made from conidia of B. bassiana and sprayed on rice canopy. The plot of conventional farmers was sprayed with synthetic insecticides made from Abamektrin. The results showed that the application of bioinsecticide of B. bassiana was not proven to reduce the pest insect population. The abundance of natural enemies of pest insects, such as  spiders and predatory insects was also more abundant in plots sprayed with  bioinsecticide than conventional plots that used synthetic insecticide. The synthetic insecticides have been shown to reduce the abundance of predatory insects and spiders. Bioinsecticides containing carrier of  liquid compost were proven to increase the growth and development of rice, which was an increase in the number of rice tillers per clump in plots applied by bioinsecticide. Thus, B. bassiana of bioinsecticide with liquid compost carrier material was safer and could maintain the abundance of predatory arthropods and increased rice growth.

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