Adaptive Significance of Sibling Egg Cannibalism in Coccinellidae: Comparative Evidence from Three Species

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Soybean Aphid Predators in Québec and the Suitability of Aphis glycines as Prey for Three Coccinellidae (2006, background): “As melanization is an indication of the imminent eclosion of coccinellid eggs (Rogers et al., 1972, Michaud and Grant, 2004 ), eggs were checked regularly when turning to a greenish-grey color.”
Lady beetles as predators of insects other than Hemiptera (2009, unknown): “Cannibalism of siblings as eggs provides critical energy and nutrients for newly hatched lady beetle larvae, speeding their development and increasing their survival (e.g., Banks, 1956; Osawa, 1992; Michaud and Grant, 2004; Perry and Roitberg, 2005; Roy et al., 2007).”
On the assessment of prey suitability in aphidophagous Coccinellidae (2005, background): “Michaud & Grant (2004) confirmed these results for H. axyridis and two other species, C. sanguinea and Olla v-nigrum Mulsant, demonstrating that this effect may be generally applicable to the group.”
Assessing the trophic ecology of the Coccinellidae: Their roles as predators and as prey (2009, background): “non in coccinellids, but differs in important nutritional, selective, and evolutionary implications (Osawa, 2002; Michaud, 2003; Michaud and Grant, 2004; Omkar et al., 2006; Seagraves, 2009).”