. Cooperative economic insect report. Beneficial insects; Insect pests. STATUS OF THE SCREW-WORM (Cochllomyia hominivorax) IN THE SOUTHWEST During the period November 7-14, TEXAS reported 13 screw-worm cases: 3 in Webb County, 2 each in Starr, Maverick and Nueces Counties, and 1 each in Dimmit, Jeff Davis, Medina and Live Oak Counties. ARIZONA reported 6 cases: 3 in Pima County, 2 : Santa Cruz County and 1 in Yuma County. The Republic of Mexico reported 125 cases: Sonora 58, Chihuahua 34, Veracruz 1, Durango 6, San Luis Potosi 2, Coahuila 9, Tamaulipas 6 and Nuevo Leon 9. Sterile screw-worm fl
. Cooperative economic insect report. Beneficial insects; Insect pests. STATUS OF THE SCREW-WORM (Cochllomyia hominivorax) IN THE SOUTHWEST During the period November 7-14, TEXAS reported 13 screw-worm cases: 3 in Webb County, 2 each in Starr, Maverick and Nueces Counties, and 1 each in Dimmit, Jeff Davis, Medina and Live Oak Counties. ARIZONA reported 6 cases: 3 in Pima County, 2 : Santa Cruz County and 1 in Yuma County. The Republic of Mexico reported 125 cases: Sonora 58, Chihuahua 34, Veracruz 1, Durango 6, San Luis Potosi 2, Coahuila 9, Tamaulipas 6 and Nuevo Leon 9. Sterile screw-worm flies released: Texas 19,499,950, New Mexico 2,760,000, Arizona 6,540,000 and Mexico 50,791,600. Positive Cases Current Cumulative Ratio of Positive Cases Negative Cases to 100 Cases Negative Current Cumulative Current Cumulative Table 1. Comparison of specimens reported during corresponding weeks in 1962 and 1963 in Southwestern Eradication Area. 1962 690 49,109 57 2,916 1, 1, 1963 219 6,105 273 6,774 1964 13 211 219 5,780 Table 2. Comparison of specimens reported during corresponding weeks and in a corresponding area in 1963 in the United States-Mexico Barrier Zone.* 1963 1964 197 130 5,587 3,850 34 1,313 55 1,883 Table 2A. Mexican portion of Barrier Zone only. 1963 1964 128 116 1,844 3,622 32 20 193 792 400 580 Barrier Zone - Area in which screw-worm eradication operations are being carried out in an effort to prevent establishment of self-sustaining screw-worm popula- tion in the United States. (Anim. Dis. Erad. Div.).. 7>i/.â Figures - Number of cases reported \~ in infested counties for \..., period November 7-14 "V â â â â âLimits of Barrier Zone "" â â â â â â â â â ILinear drop along river valleys. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may
Size: 1987px × 1257px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, booksubjectbeneficialinsects, booksubjectinsect
