Termination of sex pheromone production in mated females of the silkworm moth

Ando, Tetsu; Kasuga, Kie; Yajima, Yohko; Kataoka, Hiroshi; Suzuki, Akira

doi:10.1002/(sici)1520-6327(1996)31:2<207::aid-arch8>3.0.co;2-w

Cited by 55 publications

(20 citation statements)

References 22 publications

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“…3 and Table 2). To our knowledge, this is the first reported occurrence of 16:2 and 16:3 fatty acids in insects, although a conjugated 16:2 (10,12-hexadecadienoic acid) was observed as a precursor of pheromone biosynthesis in female silkworm moths (Ando et al, 1996). For other organisms, quantities of 16:2 have been observed in yeast cells (Ito et al, 1983;Brown et al, 1998) and marine algae (Viso and Marty, 1993), and 16:3 was present in plant leaves (Horiguchi et al, 1996) and algae (Viso and Marty, 1993).…”

Section: September 2004mentioning

confidence: 73%

Characterization of triacylglycerols from overwintering prepupae of the alfalfa pollinator Megachile rotundata (Hymenoptera: Megachilidae)

Buckner¹,

Kemp²,

Bosch³

2004

Arch Insect Biochem Physiol

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Alfalfa leafcutting bees, Megachile rotundata (F.), overwinter as prepupae. The internal lipids were extracted from prepupae that had been wintered at 4°C for 7 months. Megachile rotundata prepupae possessed copious quantities of internal lipids (20% of the fresh weight) that were extracted with CHCl 3 /methanol (2:1). Transmission electron microscopy revealed that lipids were stored within very large intracellular vacuoles. Separation by silica chromatography revealed that 88% of the internal lipids were triacylglycerols. Ester derivatives of fatty acids from triacylglycerol components were analyzed by gas chromatography-mass spectrometry and 15 fatty acid constituents were identified. The majority (76%) of the triacylglycerol fatty acids were unsaturated fatty acids. The major triacylglycerol fatty acid constituent (30%) was the C 16 monounsaturated fatty acid, palmitoleic acid (16:1, hexadec-9-enoic acid), with substantial amounts of linolenic acid (18:3, octadec-9,12,15-trienoic acid, 15%), palmitic acid (16:0, hexadecanoic acid, 14%) and oleic acid (18:1, octadec-9-enoic acid, 13%). Palmitoleic acid as the major fatty acid of an insect is an unusual occurrence as well as the presence of the 16-carbon polyunsaturated fatty acids, 16:2 and 16:3. The major intact triacylglycerol components were separated and identified by high performance liquid chromatography-mass spectrometry. A complex mixture of approximately 40 triacylglycerol components were identified and major components included palmitoyl palmitoleoyl oleoyl glycerol, palmitoyl palmitoleoyl palmitoleoyl glycerol, myristoyl palmitoleoyl palmitoleoyl glycerol, myristoleoyl palmitoyl palmitoleoyl glycerol, and palmitoyl palmitoleoyl linolenoyl glycerol. Mention of trade names or commercial products in this article is solely for the purpose of providing specific information and does not imply recommendation or endorsement by the U.S. Department of Agriculture. U.S. Department of Agriculture, Agricultural Research Service, Northern Plains Area, is an equal opportunity/ affirmative action employer and all agency services are available without discrimination.Abbreviations used: BSA = N,O-bis-(trimethylsilyl) acetamide; FAME = fatty acid methyl ester; L = linoleic acid; La = lauric acid; Ln = linolenic acid; M = myristic acid; Mo = myristoleic acid; O = oleic acid; P = palmitic acid; Po = palmitoleic acid; P L = palmitlinoleic acid; P Ln = palmitlinolenic acid; S = stearic acid; TAG = triacylglycerol; t-BME = tert-butylmethylether; TMS = trimethylsilyl.

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Section: September 2004mentioning

confidence: 73%

Characterization of triacylglycerols from overwintering prepupae of the alfalfa pollinator Megachile rotundata (Hymenoptera: Megachilidae)

Buckner¹,

Kemp²,

Bosch³

2004

Arch Insect Biochem Physiol

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“…If mating is delayed, the germ cells within the germarium disorganize and cell death occurs (Berger and Cruz-Landim 2012;. In several insects, mating is the primary factor that triggers oocyte ripening in the ovary, indicating the presence of factors in seminal fluid that trigger oogenesis (Ando et al 1996;Coffelt and Vick 1987;Fan et al 1999;Foster 1993;Giebultowicz et al 1991;Rafaeli and Gileadi 1995;Raina et al 1994;Shorey et al 1968;Webster and Carde 1984). Nonetheless, when analyzing mucus gland secretions, which are introduced with semen into the genital tract of honey bee queens, Colonello and Hartfelder (2003) did not find evidence that drone accessory gland proteins are necessary for ovarian development in A. mellifera .…”

Section: Discussionmentioning

confidence: 99%

Beekeeping practice: effects of Apis mellifera virgin queen management on ovary development

2015

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-Newly emerged virgin queens are frequently imprisoned in cages either inside or outside of colonies before delivery to a new hive. Ovary integrity and proper functioning is the primary factor in a queen's success as the colony mother. In this work, histological studies on ovaries are used to evaluate the effect of virgin queen imprisonment both out and inside the colony. The results show that the ovarian follicles of virgin queens maintained out of the colony advance only until the beginning of differentiation of oocytes and nurse cells, the vitellarium does not differentiate, and cell death is observed. For virgin queens caged inside a colony, oogenesis progresses until nurse cell and oocyte differentiation is completed, and the vitellarium shows initial differentiation. The results suggest that the best method for a head start of a queen's fertility is to maintain her inside the colony until introduction into a new hive.apiculture / caged queen / cell death / egg production / histology

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“…Studies in moths have indicated that pheromone emission is reduced by copulation; both humoral and neural control of pheromonostatis have been investigated in these insects (Raina et al 1986;Raina 1989;Mbata & Ramaswamy 1990;Kingan et al 1995;Ando et al 1996). Some female individuals in Vol.…”

Section: Discussionmentioning

confidence: 99%

“…For example, female moths that mate only once usually terminate sex pheromone emission after mating to prevent further mating episodes (Raina 1989;Ramaswamy & Cohen 1992;Foster 1993). In contrast, in species that females mate more than once, pheromone emission continues even after the first mating (Heath et al 1991;Ando et al 1996).…”

Section: Introductionmentioning

confidence: 99%

Individual variation in pheromone emission and termination patterns in female Anomala cuprea

2002

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Individual variations in pheromone emission patterns were examined in a scarab beetle, Anomala cuprea Hope (Coleoptera: Scarabaeidae), by headspace collection of airborne volatiles from individual females. The amount of pheromone obtained varied among virgin females, and about 16% of these females ("silent" females) did not emit detectable amount of pheromone throughout the experimental period. There was no clear temporal pattern of peak pheromone emission for 19 days after the onset. More than half of the laboratory mated females completely stopped releasing pheromone after the first mating, while the rest of them continued releasing pheromone, frequently followed by additional mating.

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Termination of sex pheromone production in mated females of the silkworm moth

Cited by 55 publications

References 22 publications

Characterization of triacylglycerols from overwintering prepupae of the alfalfa pollinator Megachile rotundata (Hymenoptera: Megachilidae)

Characterization of triacylglycerols from overwintering prepupae of the alfalfa pollinator Megachile rotundata (Hymenoptera: Megachilidae)

Beekeeping practice: effects of Apis mellifera virgin queen management on ovary development

Individual variation in pheromone emission and termination patterns in female Anomala cuprea

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