Ian Dworkin, a zoologist at Michigan State University, was part of the team that first demonstrated why everywhere - from Moose rhinoceros beetles - and other decorative ma-attracting structures are sensitive to changes in diet. As reported in the current issue of the journal Science, a key component of this growth is insulin, Dworkin said.
"Sure elk antlers, peacock tail feathers and beetle horns are very different, but it seems to have similar mechanisms such large structures," he said. "A reduction in insulin levels significantly reduces the size of the ornamental structures."
Sexual selection has roots in Darwin's research. Later research showed that the so-called principle of "handicap", which marked a man loaded with such baggage carrying awkward. Dworkin team believes, however, that part of the image insulin, males are actually striking off. In contrast, insulin dependence of these big horns provides a way for men to show how good they are.
"It's a sign that these men are thriving, some pretty robust and certainly worthy companion," said Dworkin, who led the research at the lighthouse, MSU's National Science Foundation Center for the Study of Evolution in Action.
Dworkin and the team discovered that whenever such exaggerated traits evolve, but repeatedly, but independently of each other, seems to use insulin dependence. This suggests that the properties are more likely to have evolved as honest indicators of quality rather than disadvantages.
"While there is work to be done, our results provide an important way to connect and genetic mechanism with the latest evolution exaggerated trait reason," said Dworkin.
Suppliers
Contact Us
GENTAUR Europe BVBA Voortstraat 49, 1910 Kampenhout BELGIUM Tel 0032 16 58 90 45 Fax 0032 16 50 90 45 This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it. |
GENTAUR BULGARIA
53 Iskar Str. 1191 Kokalyane, Sofia
Tel 0035924682280
Fax 0035929830072
This email address is being protected from spambots. You need JavaScript enabled to view it." style="">This email address is being protected from spambots. You need JavaScript enabled to view it.
GENTAUR France SARL
9, rue Lagrange, 75005 Paris
Tel 01 43 25 01 50
Fax 01 43 25 01 60
This email address is being protected from spambots. You need JavaScript enabled to view it." style="">This email address is being protected from spambots. You need JavaScript enabled to view it.
This email address is being protected from spambots. You need JavaScript enabled to view it." style="">This email address is being protected from spambots. You need JavaScript enabled to view it.
GmbH Marienbongard 20
52062 Aachen Deutschland
Tel (+49) 0241 56 00 99 68
Fax (+49) 0241 56 00 47 88 This email address is being protected from spambots. You need JavaScript enabled to view it." style="font-family: Arial, Tahoma, Verdana, Helvetica; line-height: 15.59375px; ">
This email address is being protected from spambots. You need JavaScript enabled to view it." style="">This email address is being protected from spambots. You need JavaScript enabled to view it.
This email address is being protected from spambots. You need JavaScript enabled to view it." style="font-size: 12px; line-height: 1.3em;">
This email address is being protected from spambots. You need JavaScript enabled to view it." style="">This email address is being protected from spambots. You need JavaScript enabled to view it.
This email address is being protected from spambots. You need JavaScript enabled to view it.
GENTAUR Ltd.
Howard Frank Turnberry House
1404-1410 High Road
Whetstone London N20 9BH
Tel 020 3393 8531
Fax 020 8445 9411
This email address is being protected from spambots. You need JavaScript enabled to view it." style="">This email address is being protected from spambots. You need JavaScript enabled to view it.
GENTAUR Poland Sp. z o.o.
ul. Grunwaldzka 88/A m.2
81-771 Sopot, Poland
Tel 058 710 33 44
Fax 058 710 33 48
This email address is being protected from spambots. You need JavaScript enabled to view it." style="">This email address is being protected from spambots. You need JavaScript enabled to view it.
GENTAUR Nederland BV
Kuiper 1
5521 DG Eersel Nederland
Tel 0208-080893
Fax 0497-517897
This email address is being protected from spambots. You need JavaScript enabled to view it." style="">This email address is being protected from spambots. You need JavaScript enabled to view it.
GENTAUR SRL IVA IT03841300167
Piazza Giacomo Matteotti, 6, 24122 Bergamo
Tel 02 36 00 65 93
Fax 02 36 00 65 94
This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.
GENTAUR Spain
Tel 0911876558
This email address is being protected from spambots. You need JavaScript enabled to view it." style="">This email address is being protected from spambots. You need JavaScript enabled to view it.
Genprice Inc, Logistics
547, Yurok Circle
San Jose, CA 95123
Phone/Fax:
(408) 780-0908
This email address is being protected from spambots. You need JavaScript enabled to view it.
GENPRICE Inc. invoicing/ accounting:
6017 Snell Ave, Suite 357
San Jose, CA. 96123
Serbia, Macedonia,
Montenegro, Croatia:
Tel 0035929830070
Fax 0035929830072
This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.
GENTAUR Romania
Tel 0035929830070
Fax 0035929830072
This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.
GENTAUR Greece
Tel 00302111768494
Fax 0032 16 50 90 45
This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.
Other countries
Luxembourg +35220880274
Schweiz Züri +41435006251
Danmark +4569918806
Österreich +43720880899
Ceská republika Praha +420246019719
Ireland Dublin +35316526556
Norge Oslo +4721031366
Finland Helsset +358942419041
Sverige Stockholm +46852503438
Magyarország Budapest +3619980547