Annual Progress Report |
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Page 10
... gavage for each rat species . Chemicals were then evaluated for acceptance and mortality by bioassay . The chemical con- centration was formulated to yield one LD50 on each 1/10 of the average daily consumption of polished rice ( Figure ...
... gavage for each rat species . Chemicals were then evaluated for acceptance and mortality by bioassay . The chemical con- centration was formulated to yield one LD50 on each 1/10 of the average daily consumption of polished rice ( Figure ...
Page 42
... population ) were determined for the materials available . Standard rating indices ( LD50 by gavage -- number of LD50's consumed on toxic bait during a 24 - hour period -- percent mortality after 42 Laboratory Evaluation of Lethal Agents.
... population ) were determined for the materials available . Standard rating indices ( LD50 by gavage -- number of LD50's consumed on toxic bait during a 24 - hour period -- percent mortality after 42 Laboratory Evaluation of Lethal Agents.
Page
... gavage ** Litchfield and Wilcoxon method , gavage *** Thompson and Weil method , free - feeding 21.2 *** ( 16.5-27.2 ) 14.3 ** ( 9.7-21.0 ) 27.0 * ( 18.0-40.5 ) asb Figure 7 . Weatherability of Zinc Phosphide Treated Bait - 47 - -
... gavage ** Litchfield and Wilcoxon method , gavage *** Thompson and Weil method , free - feeding 21.2 *** ( 16.5-27.2 ) 14.3 ** ( 9.7-21.0 ) 27.0 * ( 18.0-40.5 ) asb Figure 7 . Weatherability of Zinc Phosphide Treated Bait - 47 - -
Contents
RESEARCH ACTIVITIES | 7 |
METHODS | 22 |
E POPULATION AND MOVEMENT STUDIES | 33 |
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adult females animals Annual average bait acceptance barrios binlid bioassay booting rice breeding Bureau of Plant Calauan census Central Luzon College of Agriculture conducted Cotabato damage estimates Damage Survey damaged by rats Denver Wildlife Research determine dikes DMCT dry season evaluation field gavage harvest hectare indicated irrigated area irrigated rice laboratory Laguna Laguna Province LD50's consumed lethal agents litter live-traps males meters monthly National Economic Council nights Nueva Ecija observations paddy dikes Pangasinan percent damage Philippines Plant Industry polished rice prevalence of pregnancy provinces rainfed and irrigated rainfed area rat damage rat populations Rating index Rattus argentiventer Rattus rattus mindanensis recaptured reference plots Results and Discussion ricefield rats Rodent Research Center samples Siniloan snap-traps species study area Sultan sa Barongis Sumangil Swink Table Tarlac tests tillers cut Total toxicant tracking tiles transects trap success trapping periods treated USAID weight wet season Wildlife Research Center zinc phosphide