Insect–Plant Food Webs Could Provide New Clues for Pest Management

1999 ◽  
Vol 28 (4) ◽  
pp. 539-544 ◽  
Author(s):  
Graciela R. Valladares ◽  
Adriana Salvo
Keyword(s):  
Food Webs ◽  
Pest Management ◽  
Plant Food

Reverse latitudinal trends in species richness of pitcher-plant food webs

2003 ◽  
Vol 6 (9) ◽  
pp. 825-829 ◽  
Author(s):  
Hannah L. Buckley ◽  
Thomas E. Miller ◽  
Aaron M. Ellison ◽  
Nicholas J. Gotelli
Keyword(s):  
Species Richness ◽  
Food Webs ◽  
Plant Food ◽  
Pitcher Plant

Habitat Fragmentation Effects on Trophic Processes of Insect-Plant Food Webs

2006 ◽  
Vol 20 (1) ◽  
pp. 212-217 ◽  
Author(s):  
GRACIELA VALLADARES ◽  
ADRIANA SALVO ◽  
LUCIANO CAGNOLO
Keyword(s):  
Habitat Fragmentation ◽  
Food Webs ◽  
Plant Food

Edge effects on insect–plant food webs: assessing the influence of geographical orientation and microclimatic conditions

2020 ◽  
Vol 45 (4) ◽  
pp. 806-820
Author(s):  
María Laura Bernaschini ◽  
Graciela Valladares ◽  
Adriana Salvo
Keyword(s):  
Food Webs ◽  
Edge Effects ◽  
Plant Food ◽  
Microclimatic Conditions

Electron investigations of rhabdovirus-like particles in mexican bean beetles and crickets

1978 ◽  
Vol 36 (2) ◽  
pp. 378-379
Author(s):  
J. R. Adams ◽  
G. J Tompkins ◽  
A. M. Heimpel ◽  
E. Dougherty
Keyword(s):  
Biological Control ◽  
Integrated Pest Management ◽  
Pest Management ◽  
Developmental Stages ◽  
Management Program ◽  
Acheta Domesticus ◽  
Epilachna Varivestis ◽  
House Cricket ◽  
Similar Morphology ◽  
Bean Beetle

As part of a continual search for potential pathogens of insects for use in biological control or on an integrated pest management program, two bacilliform virus-like particles (VLP) of similar morphology have been found in the Mexican bean beetle Epilachna varivestis Mulsant and the house cricket, Acheta domesticus (L. ).Tissues of diseased larvae and adults of E. varivestis and all developmental stages of A. domesticus were fixed according to procedures previously described. While the bean beetles displayed no external symptoms, the diseased crickets displayed a twitching and shaking of the metathoracic legs and a lowered rate of activity.Examinations of larvae and adult Mexican bean beetles collected in the field in 1976 and 1977 in Maryland and field collected specimens brought into the lab in the fall and reared through several generations revealed that specimens from each collection contained vesicles in the cytoplasm of the midgut filled with hundreds of these VLP's which were enveloped and measured approximately 16-25 nm x 55-110 nm, the shorter VLP's generally having the greater width (Fig. 1).

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.

Subsets of food webs cannot be used as a substitute to assess the functioning of entire ecosystems

2019 ◽  
Vol 613 ◽  
pp. 49-66 ◽  
Author(s):  
VN de Jonge ◽  
U Schückel ◽  
D Baird
Keyword(s):  
Food Webs
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