Insect reproduction

An entirely different, in fact opposite, effect on insect reproduction by terpenes occurs with the desert locust. In this case the monoterpenes a-pinene, -pinene, llmonene, and euge-nol evaporating from desert shrubs about to bloom, precipitates synchronised sexual maturation and mating activity in the locusts (14). The spruce budworm is also stimulated to increased fertility levels by host tree monoterpenes (R.G. Cates, personal communication). It is possible that even opposite effects on reproduction in insects could occur depending on the specialisation of the insect species to its environment, the diversity of the biological activities of the compounds, and the high level of complexity of the reproductive processes. 

Pellmyr, O. and Thien, L. B. (1986). Insect reproduction and floral fragrances keys to the evolution of the angiosperms Taxon 35 76-85. 

Engelmann, F. (1970). The Physiology of Insect Reproduction. Oxford Pergamon Press. 

The social organization of insect colonies indicates the importance of information that is usually not needed in solitary insects. Information about the presence and fertility of a queen strongly affects worker behavior and colony organization. Reproductive competition in colonies requires the correct assessment of each others rank. All of this information about fertility status and/or dominance status can be encoded in the cuticular hydrocarbon profile of members of ant, wasp, and bee colonies. Understanding variations in these hydrocarbon profiles, their composition, and relation to fertility is key to the further understanding of the major property of eusocial insects, reproductive division of labor. 

Insect Reproduction Laboratory, Agricultural Research Service, U.S. Department of Agriculture, Beltsville, MD 20705... 

Insect Reproduction Laboratory, Agricultural Research Service,... 

USE Experimental insect reproduction inhibitor, Kenaga, J. Econ. Entomol 62, 1006 (1969). 

Effects on Insect Reproduction. The reproductive cycle in insects is a complex process, often sensitive to perturbation by low doses of toxicants or hormones. In light of distinct differences between... 

The biological significance of eicosanoids in invertebrates has been treated from several points of view. Brady [14] tried to link his pioneering work on crickets with the information available on other invertebrates at the time. Bundy [12] considered invertebrates as possible sources of eicosanoids. Stanley-Samuelson and Loher [15] treated the roles of PGs in insect reproduction. Stanley-Samuelson has reviewed the roles of eicosanoids in insects and other invertebrates [13,16-20,23]. Other authors have treated the presence and roles of eicosanoids in invertebrates [21,22]. While they are not focused on reproduction, these papers detail current knowledge, highlight important shortcomings and present new theories on the presence and meaning of eicosanoids in invertebrates. 

Potentially Important and Useful Regulators of Insect Reproduction... 

Gade, G. In Advances in Regulation of Insect Reproduction Bennettova,... 

Stay, B. Joshi, S. Tobe, S. S. In Advances in Regulation of Insect Reproduction Bennettova, B. Gelbic, I. Soldan, T., Eds. Czech Acad. 

Hegdekar, B. M. (1970), Amino acid analogues as inhibitors of insect reproduction, J. Econ. Entomol. 63, 1950-1956. 

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