. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. M. SEXTA: LABORATORY LIFE-CYCLE 135 -i 100. 0 90 PERCENT TIME FROM OVIPOSITION TO PUPATION 100 FIGURE 1. Rate of growth of physiologically advanced (PA) insects graphed on log (solid line) and linear (dotted line) scales; % weight scale (100% = g) against % time ( 100% = pupation at days). Dashes at base of graph represent 12-hr scotophases of each day at 25° C, starting at 6:00 PM. Numbers preceded by L identify instar. EG = egg stage: FE = fluid excretion ;FW = period of estimated weight loss due to end of frass
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. M. SEXTA: LABORATORY LIFE-CYCLE 135 -i 100. 0 90 PERCENT TIME FROM OVIPOSITION TO PUPATION 100 FIGURE 1. Rate of growth of physiologically advanced (PA) insects graphed on log (solid line) and linear (dotted line) scales; % weight scale (100% = g) against % time ( 100% = pupation at days). Dashes at base of graph represent 12-hr scotophases of each day at 25° C, starting at 6:00 PM. Numbers preceded by L identify instar. EG = egg stage: FE = fluid excretion ;FW = period of estimated weight loss due to end of frass elimination and use of fluid for body wetting; H = hatch; MS = molt sleep plateaus between end of feeding stage and larval-larval ecdysis; P = pupal ecdysis. All points were derived from percentage column of Table I and weight column of Table II and simply connected. ecdysis, and then the larvae remained motionless for up to about five hours or until the onset of the scotophase. Heart exposure. The dorsal aorta became visible approximately three hours after feeding stopped. The aorta became very obvious by the end of the next event—body wetting—and it remained so until pupal ecdysis. This visually observable event has been used frequently and is valuable as the first prodromal sign of pupation for larval M. (Truman and Riddiford, 1974; Nijhout, 1976). However, its occurrence and detection can vary by more than 5 hours. Body wetting. Within about 8 hours after feeding stopped, the larvae began "body ; This phenomenon (but not the term) was first reported by Baumhover, Cantelo, Hobgod, Knott, and Lam (1977). Time-lapse studies showed that this activity is characterized by a sharp turning of the head so that all accessible dorsal and lateral body surfaces can be covered with an oral Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
