Crossing between nondiapausing and diapausing races of Sarcophaga peregrina

Abstract

The temperate race (D) of S. peregrina undergoes pupal diapause in response to certain environmental conditions of photoperiod (13L:11D-11L:13D) and temperature (under 20 degrees C). The tropical race (ND) does not do so under the same circumstances. The tendency toward diapause was suppressed 30-40% of the hybrids of crossings D female x ND male and ND female x Dmale even under such short day and low temperature conditions as 11L:13D-9L:15D, 20 DEGREES C. For entering diapause, the hybrids rrequire a shorter day length (13L:11D) than that of (D) parents (15L:9D).

Inheritance of photoperiodic control of pupal diapause in the cotton bollworm, Helicoverpa armigera (Hübner)

“…These results suggest that the photoperiodic response is inheritable. Similar results are found in the flesh fly, S. peregrina (Kurahashi and Ohtaki, 1977) and the Asian corn borer, O. furnacalis (Xia et al, 2012), where in the reciprocal crosses between the temperate strain and the tropic strain their F 1 progeny showed a long-day response, similar to that of their parental strains.…”

“…Tropical populations that lack diapause have been crossed with temperate populations in only a few instances (Raina and Bell, 1974;Kurahashi and Ohtaki, 1977;Dingle, 1978;Dingle et al, 1982). Here, we investigated the diapause responses of H. armigera in the pure strains, F 1 and F 2 progeny and backcross progeny by crossing a high diapause response temperate strain with a low diapause response tropical strain under different photoperiods and temperatures.…”

“…Crosses made between geographic strains for most insect species show diapause characteristics of all F 1 hybrids that are intermediate between those of their parents, such as the knot-grass moth, Acronycta rumicis, the arctiid moth, Spilosoma menthastri, the cabbage butterfly, Pieris brassicae, the satin moth, Leucoma salicis (Danilevskii, 1965), the boll Weevil, Anthonomus grandis (McCoy et al, 1968), the flesh fly, Sarcophaga peregrina (Kurahashi and Ohtaki, 1977), the anise swallowtail, Papilio zelicaon (Sims, 1983), the face fly, Musca autumnalis (Kim et al, 1995), the cabbage beetle, Colaphellus bowringi (Kuang et al, 2011), the European corn borer, Ostrinia nubilalis (Ikten et al, 2011), the comma butterfly, Polygonia c-album (Söderlind and Nylin, 2011) and the Asian corn borer, Ostrinia furnacalis (Xia et al, 2012), indicating that the genetic control of the photoperiodic response is polygenic for these species.…”

Induction of Pupal Diapause and Photoperiodic Sensitivity During Early Development of Sarcophaga Peregrina Larvae*

“…Prior to these investigators, Denlinger (1971) concluded that the embryos of S. crassipalpis in the mother's uterus have photoperiodic sensitivity, and that the photoperiodic experience by the embryos is directly effective on determination of pupa to diapause. The results of our crossing experiments between nondiapausing and diapausing races also suggested that the physiological state of the progeny is determined by combi-nation of genetic and environmental conditions (Kurahashi and Ohtaki , 1977). Vinogradova (1976) proved that the external photoperiodic information is directly perceived by the embryo in S, similis and S. septentrionalis.…”

“…Almost all offspring of them undergo pupal diapause in response to a certain environmental condition of photoperiods (13L 11D-1OL 14D) and temperature (20 C) . Under a long day condition (15L 9D) at 20 C, they seldom enter diapause (Kurahashi and Ohtaki , 1977).…”