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Biomedical subjects

M M Yates

Publications and source records attributed to M M Yates.

6 recordsLinked to original sources
PubMed1992

Back to basics.

The basic strength of the AMCA family is the wide range of expertise and "can do" attitude of its diverse membership. The AMCA is currently experiencing problems with federal legislation and fiscal stability because we have not fully utilized member strengths to reevaluate the association's direction and set new goals to address change. However, the AMCA Board of Directors and many committee chairpersons met, reevaluated direction and clarified goals, and initiated major changes to meet the challenges facing the association and its members. Members of the AMCA are encouraged to contribute their individual talents to ensure that the association prosper and serve the needs of the mosquito and vector control family.

Mosquito Control↗
PubMed1989

Conceptual model for the use of aerial color infrared photography by mosquito control districts as a survey technique for Psorophora columbiae oviposition habitats in Texas ricelands.

Two photographic missions per year are recommended to provide information on land-use and mosquito oviposition habitats. A winter mission, following a rain, will-provide a view of low areas within fields which may be obscured by summer vegetation. A summer mission will provide current land-use and crop distribution information and may show plant stress conditions due to excessive soil moisture. An aerial color infrared photographic survey with directed ground verification should result in a substantial savings in cost and increased efficiency in surveillance of mosquito producing habitats over ground survey techniques currently employed by mosquito control districts.

Animals↗
PubMed1988

Vertical distribution and species coexistence of tree hole mosquitoes in Louisiana.

Vertical distribution and species coexistence of mosquitoes inhabiting a deciduous forest in southern Louisiana were determined using 470 ml black jars for larval collections at ground level and 1, 3, 5, 7 and 9 m on selected trees. Specific preferences for discrete microhabitats by Aedes triseriatus, Ae. hendersoni, Ae. vexans and Ae. albopictus were not evident. Niche overlap indices, however, showed little overlap of these species and seemed to indicate that the mosquitoes partitioned the ovipositional/larval sites. Competition between the most abundant species, Ae. triseriatus and Ae. albopictus, was not apparent. The tree hole mosquito community structure appeared to be mediated by the predator, Toxorhynchites rutilus septentrionalis.

Aedes↗
PubMed1986

Occurrence of Psorophora columbiae eggs in different field types comprising a Texas riceland agroecosystem.

Soil samples (3,258) were collected from soybean fields, rice fields and permanent pastures in Chambers County, TX over a 2 1/2-year period and examined for the presence of Psorophora columbiae eggs. Eggs occurred more frequently and in greater numbers in samples taken from soybean fields than in samples from either rice fields or permanent pastures during the summers of 1979 and 1981 when there was heavy rainfall in the study area. Under dry conditions, as during the summer of 1980, the frequency of egg occurrence and abundance increased in samples taken from rice fields. However, egg occurrence and abundance in soybean field samples still remained relatively high even during this particular year.

Agriculture↗
PubMed1985

Evaluation of Beecomist-applied Bacillus thuringiensis (H-14) against Anopheles quadrimaculatus larvae in rice fields.

The Beecomist spray head was evaluated for aerial application of Bacillus thuringiensis var. israelensis (serotype H-14; Bti) at various ultra low volume (ULV) rates against natural populations of Anopheles quadrimaculatus larvae in rice fields. Deposits on Kromekote cards indicated that 0.54 liter/ha of neat Bti penetrated the dense canopy of the rice field. Mean number of droplets 65 cm below canopy level was 4.9 +/- 5.0/100 cm2. At 1 day posttreatment, applications of 0.54, 0.27, 0.11, 0.07 and 0.04 liter of Bti/ha resulted in reductions of 97.9, 94.4, 93.0, 71.1 and 21.8%, respectively, of An. quadrimaculatus larvae/dip. Calculated lethal field dosages (LFD50 and LFD90) were 0.05 and 0.16 liter/ha, respectively.

Animals↗