Results 171 to 180 of about 181,142 (211)
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Pyrrolidinoöxazolidine Alkaloids from Two Species of Ladybird Beetles
Journal of Natural Products, 1997From the mixture of alkaloids obtained from adults of two species of ladybird beetles, Epilachna varivestis and Epilachna borealis, a novel bicyclic alkaloid, 5-(12'-aminotridecyl)pyrrolidinoöxazolidine [(5 alpha, 7 a beta)-hexahydro-alpha-methylpyrrolo[2,1-b]oxazole-5-dodecaneami ne] (2) was characterized on the basis of spectrometric and synthetic ...
P, Radford +4 more
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Species of Epilachna Ladybird Beetles
Zoological Science, 1997The present paper reviews current studies on various aspects of reproductive isolation in a series of closely related phytophagous ladybird beetles called the Epilachna vigintioctomaculata complex, which is composed of two groups and four species: group A comprising E.
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Intraguild predation and successful invasion by introduced ladybird beetles
Oecologia, 2004Introductions of two ladybird beetle (Coleoptera: Coccinellidae) species, Coccinella septempunctata and Harmonia axyridis, into North America for aphid biocontrol have been followed by declines in native species. We examined intraguild predation (IGP) between larvae of these two exotic species and larvae of the two most abundant native coccinellids in ...
William E, Snyder +2 more
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Development of a wingless morph in the ladybird beetle, Adalia bipunctata
Evolution & Development, 2009SUMMARY Many taxa of winged insects have independently lost the ability to fly and often possess reduced wings. Species exhibiting natural variation in wing morphology provide opportunities to investigate the genetics and developmental processes underlying the evolution of alternative wing morphs.
Suzanne T E, Lommen +3 more
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Why Big Species of Ladybird Beetles are Not Melanic
Functional Ecology, 1989Melanic forms occur commonly in small species of coccinellid like Adalia bipunctata (L.) but are rare or absent in large species like Coccinella septempunctata L. Under direct irradiation coccinellids that are melanic show a greater temperature excess than non-melanic individuals. This was demonstrated for naturally occurring morphs of A.
L. A. Stewart, A. F. G. Dixon
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LADYBIRD BEETLES AS PREDATORS OF THE POTATO PSYLLID
The Canadian Entomologist, 1933During the spring of 1933, an adult convergent ladybird beetle, Hippodamia convergens Guerin, was placed in a 3-dram homeopathic vial with a number of nymphs of the potato psyllid, Paratrioza cockerelli (Sulc). The ladybird immediately grabbed a psyllid nymph and began to eat it.
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Aphidophagous ladybird beetles adapt to an aphid symbiont
Functional Ecology, 2022Xueyong Du +11 more
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Chemical defense of the ladybird beetle Epilachna paenulata
Chemoecology, 2006The defensive chemistry of the ladybird beetle Epilachna paenulata (Coleoptera: Coccinellidae) was characterized as a mixture of piperidine, homotropane and pyrrolidine alkaloids. Whole body extracts of adult beetles contain four major alkaloids: 1-(6-Methyl-2,3,4,5-tetrahydro-pyridin-2-yl)-propan-2-one; 1-(6-methyl-2-piperidyl)-propan-2-one; 9-aza-1 ...
Soledad Camarano +2 more
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The Encyclopedia of Ladybird Beetles
Ecology, 1998Nancy A. Schellhorn +2 more
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Australian Ladybird Beetles (Coleoptera: Coccinellidae)
2013This book, by Australia's ladybird beetle specialist, Dr Adam Slipinski, illustrates Australia's diverse and fascinating ladybird beetle fauna — the commoner spotted species and the many others that are striped, glossy, and even very hairy. Most are predatory, but some are leaf feeders.
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