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Hybridization Of Aedes (Protomacleaya) Zoosophus With Ae. (Pro.) Triseriatus Group Species: Hybrid Morphology, David Taylor
Hybridization Of Aedes (Protomacleaya) Zoosophus With Ae. (Pro.) Triseriatus Group Species: Hybrid Morphology, David Taylor
David B. Taylor
Morphology of hybrids between Aedes (Protomacleaya) zoosophus and Ae. (Pro.) triseriatus group species is described. Adult females of hybrids key to Ae. zoosophus. Hybrids are differentiated from Ae. zoosophus by the dark longitudinal medial or submedial lines on the thorax and by the reduced width of the light tarsal and abdominal bands. The transverse band of light scales on the anterior scutum is complete in Ae. hendersoni / Ae. zoosophus hybrids and incomplete in Ae. triseriatus / Ae. zoosophus hybrids. Aedes brelandi / Ae. zoosophus hybrids are similar to Ae. hendersoni / Ae. zoosophus hybrids. However, due to the …
Truncation Of Screwworm (Diptera: Calliphoridae) Development By Irradiation Of Embryos., David Taylor, Robert Mangan
Truncation Of Screwworm (Diptera: Calliphoridae) Development By Irradiation Of Embryos., David Taylor, Robert Mangan
David B. Taylor
Gamma irradiation of screwworm, Cochliomyia hominivorax (Coquerel), embryos was used to truncate the life cycle at the prepupal stage. Egg hatch and larval survival were not reduced by dosages ≤8 kilorads (kr). Pupariation and adult emergence were inhibited by dosages ≥2.8 and 1.2 kr, respectively. Larvae, irradiated as embryos with dosages ≤8 kr, successfully infested wounded sheep, although larval weight was lower than normal. A dosage of 5.8 kr was sufficient to prevent pupariation, while permitting larval development to the third instar. Truncation of screwworm development permits the use of artificially wounded and infested animals for screwworm population surveillance and …