. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FEEDING AND EGG-LAYING IN AEDES 371 0> '•6 4) Q> •*- C o 3 Q. O Q. O Q. O <t. 456 Feeding Day 8 FIGURE 1. Feeding patterns of mated and virgin female Acdcs aegypti, 95% confidence limits. Arrows denote oviposition by mated females. biting as used here refers to the actual ingest ion of blood. Careful observation during these tests demonstrated that females of this strain did not probe or penetrate the host's skin without ingesting blood, and in fact, any female which was "activated" (Laarman, 1958) to
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FEEDING AND EGG-LAYING IN AEDES 371 0> '•6 4) Q> •*- C o 3 Q. O Q. O Q. O <t. 456 Feeding Day 8 FIGURE 1. Feeding patterns of mated and virgin female Acdcs aegypti, 95% confidence limits. Arrows denote oviposition by mated females. biting as used here refers to the actual ingest ion of blood. Careful observation during these tests demonstrated that females of this strain did not probe or penetrate the host's skin without ingesting blood, and in fact, any female which was "activated" (Laarman, 1958) to leave the cage wall and alight on the host invariably took blood. The amount of blood ingested varied due to the presence of residues of previous meals in the gut, as well as with the presence or absence of eggs in the ovaries, although some definite expansion of the abdomen always occurred. All rearings and tests were carried out at 80 ± 4° F. The relative humidity of the rearing room was 75 ± Sc/o, but within the cages was somewhat higher. RESULTS The pronounced alteration of the feeding pattern of virgin A. acgypti which is induced by mating can be seen in Figure 1. While at least 75% of the virgin female population fed daily, the proportion of mated females feeding on days 3, 6, and 9 was significantly reduced I/1 == .05)]. This cycle shows a 4- to 5-day period rather than the precise 4-day period of the mated females. Since these results clearly indicate that some aspect of the mating act is responsible for modifying the virgin biting and oviposition patterns, tests were conducted to identify the factor(s) responsible, using the proportion of the test population feeding on day 3 or the total number of bites over a 3-day period, as. 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 Marine Biologica
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
