Correspondence.In vitro trophic effects of ACTH

1986 ◽  
Vol 4 (1) ◽  
pp. 75-75 ◽  
Author(s):  
U. Armato ◽  
N. M. Wulffraat ◽  
H. A. Drexhage
Keyword(s):  
Trophic Effects

scholarly journals Florivory by the occupants of phytotelmata in flower parts can decrease host plant fecundity

2021 ◽  
Author(s):  
Caio C C Missagia ◽  
Maria Alice S Alves
Keyword(s):  
Host Plant ◽  
Negative Influence ◽  
Female Fitness ◽  
Insect Larvae ◽  
Floral Tissue ◽  
Trophic Effects ◽  
Plant Fecundity ◽  
Ephemeral Habitats ◽  
Neutral Effect

Abstract Some types of plant accumulate liquid in their inflorescences creating phytotelmata. These environments protect the flowers against florivory, although they may be colonized by aquatic or semi-aquatic florivorous insect larvae, whose effects on the fitness of the plants remain unclear. We tested the hypothesis of floral antagonism by the occupants of phytotelmata, which predicts that florivory by the occupants of the phytotelmata represents a cost to the female fitness of the plant, reducing its fecundity. We manipulated experimentally the infestation by three florivores larvae species occupants of phytotelmata in inflorescences of Heliconia spathocircinata (Heliconiaceae) to test for negative direct trophic effects on the fecundity of the flowering and fruiting bracts. We found that the foraging of the hoverfly (Syrphidae) and moth (Lepidoptera) larvae in the inflorescences contributed to a decline in the fecundity of the plant. While the lepidopteran impacted fecundity when foraging in both flowering and fruiting bracts, the syrphid only affected the fruiting bracts, which indicates that the nectar and floral tissue are the principal resource exploited by the hoverfly. By contrast, soldier fly (Stratiomyidae) had a neutral effect on fecundity, while foraging in flowering or fruiting bracts. These findings corroborate our hypothesis, that herbivory by the larval occupants represents cost to the host plant having phytotelmata. The negative influence of this foraging on plant fecundity will nevertheless depend on the consequences of the exploitation of resources, which vary considerably in ephemeral habitats such as the phytotalmanta of flower parts.

scholarly journals FP-receptor mediated trophic effects of prostanoids in rat ventricular cardiomyocytes

2000 ◽  
Vol 129 (8) ◽  
pp. 1723-1731 ◽  
Author(s):  
K Pönicke ◽  
C Giessler ◽  
M Grapow ◽  
I Heinroth-Hoffmann ◽  
K Becker ◽  
...  
Keyword(s):  
Trophic Effects ◽  
Ventricular Cardiomyocytes ◽  
Fp Receptor

Trophic effects of essential fatty acids on pig skin

1995 ◽  
Vol 28 (2) ◽  
pp. 73-84 ◽  
Author(s):  
G. M. Morris ◽  
J. W. Hopewell ◽  
G. A. Ross ◽  
E. Whitehouse ◽  
D. Wilding ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Essential Fatty Acids ◽  
Pig Skin ◽  
Trophic Effects

scholarly journals TROPHIC EFFECTS OF GESTATION AND LACTATION ON RAT DUODENUM

1981 ◽  
Vol 2 (2) ◽  
pp. 113-118 ◽  
Author(s):  
L. JOLICOEUR ◽  
J. ASSELIN ◽  
J. MORISSET
Keyword(s):  
Trophic Effects
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