HomeLatest ThreadsGreatest ThreadsForums & GroupsMy SubscriptionsMy Posts
DU Home » Latest Threads » Forums & Groups » Main » Latest Breaking News (Forum) » Insect Experts issue &quo... » Reply #29

Response to tonybgood (Reply #13)

Fri Mar 9, 2012, 08:21 PM

29. there is no evidence of vertebrate Bt toxicity at all, period....

You find some, then we'll talk. This is my profession-- I'm well familiar with the relevant literature. In fact, Bt is so nontoxic to vertebrates that it's being investigated as a possible treatment against human nematode parasites (several families of Bt endotoxin turn out to affect that other big ecdysozoan class, Nematoda).

Here's a quick abstract from a recent paper (2003) that summarizes Bt's vertebrate toxicity:

http://www.tandfonline.com/doi/abs/10.1300/J153v05n01_02

The development of Bt crops is one of the most significant advances in crop protection technology of the past fifty years. Current Bt crops are based on highly specific insecticidal Cry proteins of Bacillus thuringiensis. Foliar Bt insecticides based on the same proteins have been used for more than forty years and have a remarkable safety record, with no known detrimental effects reported on vertebrate or non-target invertebrate populations. Bt cotton and Bt corn have been widely adopted by farmers in the United States, with acreage averaging 40-50% of the area planted with cotton or corn in 2002. Concern has been raised about the safety of Bt crops. However, most evidence shows that these crops, like foliar Bt insecticides, are safe for non-target organisms, especially in comparison to chemical insecticides. Evidence for safety comes from knowledge of Cry protein mode of action as well as from studies of the effects of Cry proteins on non-target organisms tested in the laboratory and under operational growing conditions. These studies indicate that Bt crops, owing to their high degree of safety, can serve as the cornerstone for more environmentally sound integrated pest management programs.

Reply to this post

Back to OP Alert abuse Link to post in-thread

Always highlight: 10 newest replies | Replies posted after I mark a forum
Replies to this discussion thread
Arrow 81 replies Author Time Post
hedgehog Mar 2012 OP
bemildred Mar 2012 #1
xchrom Mar 2012 #2
lovuian Mar 2012 #3
MuseRider Mar 2012 #4
AllyCat Mar 2012 #6
newspeak Mar 2012 #59
laundry_queen Apr 2012 #81
Marthe48 Apr 2012 #80
mike_c Mar 2012 #9
MuseRider Mar 2012 #18
hedgehog Mar 2012 #22
mike_c Mar 2012 #34
caseymoz Mar 2012 #49
siligut Mar 2012 #5
CanSocDem Mar 2012 #7
The Doctor. Mar 2012 #8
mike_c Mar 2012 #10
tonybgood Mar 2012 #13
hedgehog Mar 2012 #27
saras Mar 2012 #28
mike_c Mar 2012 #30
Tumbulu Mar 2012 #44
LineLineLineLineReply there is no evidence of vertebrate Bt toxicity at all, period....
mike_c Mar 2012 #29
hedgehog Mar 2012 #39
Tumbulu Mar 2012 #45
Gore1FL Mar 2012 #50
Tumbulu Mar 2012 #57
mike_c Mar 2012 #58
Tumbulu Mar 2012 #60
OrwellwasRight Mar 2012 #65
mike_c Mar 2012 #66
Tumbulu Mar 2012 #72
mike_c Apr 2012 #73
Tumbulu Apr 2012 #76
zeemike Mar 2012 #14
DCKit Mar 2012 #21
mike_c Mar 2012 #31
DCKit Mar 2012 #41
Tumbulu Mar 2012 #47
DCKit Mar 2012 #53
hedgehog Mar 2012 #26
mike_c Mar 2012 #32
hunter Mar 2012 #38
hedgehog Mar 2012 #40
Tumbulu Mar 2012 #46
Tumbulu Mar 2012 #43
Trillo Mar 2012 #11
HubertHeaver Mar 2012 #17
Trillo Mar 2012 #56
HubertHeaver Mar 2012 #61
harun Mar 2012 #63
Snake Alchemist Mar 2012 #12
sulphurdunn Mar 2012 #15
FarCenter Mar 2012 #16
HubertHeaver Mar 2012 #19
NickB79 Apr 2012 #77
Nihil Apr 2012 #78
Dont call me Shirley Mar 2012 #20
Smilo Mar 2012 #23
LarryNM Mar 2012 #24
lunatica Mar 2012 #25
harun Mar 2012 #33
mike_c Mar 2012 #36
1monster Mar 2012 #35
Crunchy Frog Mar 2012 #37
jwirr Mar 2012 #42
Bohunk68 Mar 2012 #48
JoeyT Mar 2012 #51
hedgehog Mar 2012 #55
chervilant Mar 2012 #52
NickB79 Mar 2012 #70
chervilant Mar 2012 #71
RoccoR5955 Mar 2012 #54
Evasporque Mar 2012 #62
Vidar Mar 2012 #64
Baitball Blogger Mar 2012 #67
Kali Mar 2012 #68
Baitball Blogger Mar 2012 #69
slackmaster Apr 2012 #74
nolabels Apr 2012 #79
Dont_Bogart_the_Pretzel Apr 2012 #75
Please login to view edit histories.