111 0 obj << /Linearized 1 /O 114 /H [ 1685 708 ] /L 251585 /E 43504 /N 13 /T 249246 >> endobj xref 111 51 0000000016 00000 n 0000001371 00000 n 0000001534 00000 n 0000002393 00000 n 0000002611 00000 n 0000002694 00000 n 0000002783 00000 n 0000002894 00000 n 0000002995 00000 n 0000003061 00000 n 0000003200 00000 n 0000003266 00000 n 0000003386 00000 n 0000003452 00000 n 0000003560 00000 n 0000003626 00000 n 0000003732 00000 n 0000003797 00000 n 0000003901 00000 n 0000003966 00000 n 0000004031 00000 n 0000004098 00000 n 0000004331 00000 n 0000004512 00000 n 0000004534 00000 n 0000005158 00000 n 0000005180 00000 n 0000005737 00000 n 0000005759 00000 n 0000006299 00000 n 0000006321 00000 n 0000006876 00000 n 0000006898 00000 n 0000007451 00000 n 0000007473 00000 n 0000008040 00000 n 0000008246 00000 n 0000008782 00000 n 0000009008 00000 n 0000009526 00000 n 0000010308 00000 n 0000010515 00000 n 0000010537 00000 n 0000011104 00000 n 0000011126 00000 n 0000011898 00000 n 0000011977 00000 n 0000017526 00000 n 0000030277 00000 n 0000001685 00000 n 0000002371 00000 n trailer << /Size 162 /Info 107 0 R /Root 112 0 R /Prev 249235 /ID[<437e5f0e8d43d6e299984f8156a4c79c><1075af496efc922e5acd1f42facaab22>] >> startxref 0 %%EOF 112 0 obj << /Type /Catalog /Pages 109 0 R /Metadata 106 0 R /AcroForm 113 0 R /Outlines 115 0 R /PageMode /UseOutlines /PageLayout /SinglePage >> endobj 113 0 obj << /Fields [ ] /DR << /Font << /ZaDb 103 0 R /Helv 104 0 R >> /Encoding << /PDFDocEncoding 105 0 R >> >> /DA (/Helv 0 Tf 0 g ) >> endobj 160 0 obj << /S 404 /O 583 /V 599 /Filter /FlateDecode /Length 161 0 R >> stream The only plant this particular weevil attacks is cotton, which happens to comprise the most popular fabric in North America. Figure 4 Figure 5 Figure 6. After heavy use of pesticides to reduce Boll Weevil populations did not completely eradicate their threat to cotton crops, the cotton plant itself was genetically altered to eliminate the Boll Weevil's interest in eating it. As the cotton plant forms buds, the Boll Weevil devours the buds, preventing any usable cotton tuft from developing. In a testament to man's adaptability, a monument to the Boll Weevil was … The boll weevil (Anthonomus grandis) is a beetle that feeds on cotton buds and flowers. H�b```f``�������� �� ��,k�E�Y8f�b`�4���|�dcbt�"�u9�����b�3�}�*0�n�L!�sV�M�i����{���b�J��WV�4�����.��ҏW�=Y5-��o���ke�S�_��[N5G�t��Y��V/u�����3@�.�ZΉ W�k~rS����IqK=[�r�w����~A~㔓�����LT�=����=�X��Y����e�*����r�{��w��%�;OY�dC&�яww��-�|��::�ߏ�oN������#�_�=zt�ћ'�. Authored By Staff Writer; Content ©www.InsectIdentification.org. The Boll Weevil Eradication Program (BWEP) was initiated and a gene was inserted into the cotton plant's DNA that allowed the cotton plant to produce a chemical protein that is toxic to Boll Weevils. Bolls are the protective cases around the fibrous balls of cotton. %PDF-1.4 %���� Strawberry bud weevils are red-brown with dark markings and have bodies from 1/12 to 1/8 inch in length. boll weevil in shape, color, and size, but its snout is thinner and longer in proportion to its 3/8-inch body length. This enlarged top view of a boll The effectiveness of this genetically modified cotton led to the drastic reduction in the amount of pesticides that are used on cotton plants. Capability, Shape, Texture/Pattern, Benefits, Dangers. Thought to be native to Central Mexico, it migrated into the United States from Mexico in the late 19th century and had infested all U.S. cotton-growing areas by the 1920s, devastating the industry and the people working in the American South. The bane of cotton farmers in the late 19th and early 20th century, the Boll Weevil has been controlled and managed with good results in the 21st century. Image Credit: Image copyright www.InsectIdentification.org; No Reproduction Permitted, Updated: 6/10/2020; The size of a mature boll weevil varies according to the amount of food it receives during its larval stage, but it averages about 6 mm (1 / 4 inch), including the long, curved snout, which is about one-half the body length.In the spring, adult boll weevils emerge from a partly dormant state, and their light yellow colour changes to gray or black over several weeks. Since 1978, the Boll Weevil Eradication Programin the U.S. allowed full-scale cultivation to resume in many reg… During the late 20th century, it became a serious pest in South America as well.

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