. Cooperative economic insect report. Insect pests Control United States Periodicals. - 519 - INSECTS AFFECTING MAN AND ANIMALS STATUS OF THE SCREW-WORM (Cochliomyia hominivorax) IN THE SOUTHWEST During the period May 10-16, a total of 15 screw-worm cases was reported from TEXAS. This is the largest number of cases reported for any week during this year. Counties reporting first screw-worm cases this year were Llano (2), Zapata (1) and Presidio (1). The Republic of Mexico reported 63 screw-worm cases from the States of Sonora (20), Chihuahua (4) , Coahuila (6), Nuevo Leon (4) , Tamaulipas (28)
. Cooperative economic insect report. Insect pests Control United States Periodicals. - 519 - INSECTS AFFECTING MAN AND ANIMALS STATUS OF THE SCREW-WORM (Cochliomyia hominivorax) IN THE SOUTHWEST During the period May 10-16, a total of 15 screw-worm cases was reported from TEXAS. This is the largest number of cases reported for any week during this year. Counties reporting first screw-worm cases this year were Llano (2), Zapata (1) and Presidio (1). The Republic of Mexico reported 63 screw-worm cases from the States of Sonora (20), Chihuahua (4) , Coahuila (6), Nuevo Leon (4) , Tamaulipas (28) and Durango (1). A total of 90,287,050 sterile screw-worm flies was released: 24,959,250 in Texas, 678,000 in New Mexico, 100,000 in Arizona and 64,549,800 in Mexico. The following is a comparison of specimens reported during corresponding weeks in 1962 and 1963: Ratio of Cases Year Positive Cases Negative Cases* Positive to Negative** Current Cumulative Current Cumulative Current Cumulative 1962 1,150 6,224 128 1,263 8,984:1,000 4,928:1,000 1963 132 890 317 2,757 416:1,000 323:1,000 1964 15 57 253 2,850 50 :1,000 20:1,000 * The "number of screw-worm cases is an index of the efficiency of the reporting system. ** A comparison of the ratios of screw-worm cases to cases that are not screw- worm is an index of the change in numbers of screw-worm cases. (Anim. Dis. Erad. Div„).. 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 not perfectly resemble the original United States. Bureau of Entomology and Plant Quarantine; United States. Plant Pest Control Branch; United States. Plant Pest Control Division; United States. Animal and Plant Health Inspection Service. Plant Protection and Quarantine Programs. Washington, D. C. : U. S. Dept. of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine
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Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity
