Trivers, R. L. Parent-offspring conflict. Am. Zool. 14, 249–264 (1974).
Trivers, R. L. Parental investment and sexual selection. In Sexual Selection and the Descent of Man 1871–1971 (ed. Campbell, B.) 136–179 (Routledge, 1972).
Godfray, H. C. J. Evolutionary theory of parent–offspring conflict. Nature 376, 133–138 (1995).
Google Scholar
Parker, G. A. & Macnair, M. R. Models of parent-offspring conflict. IV. Suppression: Evolutionary retaliation by the parent. Anim. Behav. 27, 1210–1235 (1979).
Wells, J. C. K. Parent-offspring conflict theory, signaling of need, and weight gain in early life. Q. Rev. Biol. 78, 169–202 (2003).
Google Scholar
Godfray, H. C. J. & Johnstone, R. A. Begging and bleating: The evolution of parent-offspring signalling. Philos. Trans. R. Soc. B 355, 1581–1591 (2000).
Google Scholar
Mock, D. W. & Parker, G. A. Siblicide, family confilct and the evolutionary limits of selfishness. Anim. Behav. 56, 1–10 (1997).
Wilson, A. J. et al. Selection on mothers and offspring: Whose phenotype is it and does it matter?. Evolution 59, 451–463 (2005).
Google Scholar
Janzen, F. J. & Warner, D. A. Parent-offspring conflict and selection on egg size in turtles. J. Evol. Biol. 22, 2222–2230 (2009).
Google Scholar
Hinde, C. A., Johnstone, R. A. & Kilner, R. M. Parent-offspring conflict and coadaptation. Science 327, 1373–1376 (2010).
Google Scholar
Kölliker, M. et al. Parent-offspring conflict and the genetic trade-offs shaping parental investment. Nat. Commun. 6, 1–8 (2015).
Kilner, R. M. & Hinde, C. A. Parent–offspring conflict. In The Evolution of Parental Care (eds Royle, N. J. et al.) 119–132 (Oxford University Press, 2012).
Mas, F. & Kölliker, M. Maternal care and offspring begging in social insects: Chemical signalling, hormonal regulation and evolution. Anim. Behav. 76, 1121–1131 (2008).
Hale, R. E. & Travis, J. The evolution of developmental dependence, or ‘Why do my kids need me so much?’. Evol. Ecol. Res. 14, 207–221 (2012).
Gomendio, M. Suckling behaviour and fertility in rhesus macaques (Macaca multatta). J. Zool. 217, 449–467 (1989).
Hamada, Y., Murata, T., Watanabe, S. & Kanda, I. Inhibitory effect of prolactin on ovulation in the in vitro perfused rabbit ovary. Nature 285, 161–163 (1980).
Google Scholar
Short, R. V. Breast feeding. Sci. Am. 250, 35–41 (1984).
Google Scholar
Traynor, K. S., Le Conte, Y. & Page, R. E. Age matters: Pheromone profiles of larvae differentially influence foraging behaviour in the honeybee, Apis mellifera. Anim. Behav. 99, 1–8 (2015).
Maisonnasse, A., Lenoir, J. C., Beslay, D., Crauser, D. & Le Conte, Y. E-β-ocimene, a volatile brood pheromone involved in social regulation in the honey bee colony (Apis mellifera). PLoS ONE 5, 1–7 (2010).
Capodeanu-Nägler, A., De La Torre, E. R., Eggert, A. K., Sakaluk, S. K. & Steiger, S. Divergent coevolutionary trajectories in parent–ofspring interactions and discrimination against brood parasites revealed by interspecifc cross-fostering. R. Soc. Open Sci. 5, 180819 (2018).
Smiseth, P. T. & Moore, A. J. Behavioral dynamics between caring males and females in a beetle with facultative biparental care. Behav. Ecol. 15, 621–628 (2004).
Eggert, A. K. Alternative male mate-finding tactics in burying beetles. Behav. Ecol. 3, 243–254 (1992).
Pukowski, E. Ökologische untersuchungen an Necrophorus F. Z. Morphol. Ökol. Tiere 27, 518–586 (1933).
Eggert, A.-K. & Müller, J. K. Biparental care and social evolution in burying beetles: Lessons from the larder. Soc. Behav. Insects Arachn. (1997).
Royle, N. J., Hopwood, P. E. & Head, M. L. Burying beetles. Curr. Biol. 23, R907 (2013).
Google Scholar
Scott, M. P. The ecology and behavior of burying beetles. Annu. Rev. Entomol. 43, 595–618 (1998).
Google Scholar
Arce, A. N., Johnston, P. R., Smiseth, P. T. & Rozen, D. E. Mechanisms and fitness effects of antibacterial defences in a carrion beetle. J. Evol. Biol. 25, 930–937 (2012).
Google Scholar
Cotter, S. C. & Kilner, R. M. Sexual division of antibacterial resource defence in breeding burying beetles, Nicrophorus vespilloides. J. Anim. Ecol. 79, 35–43 (2010).
Google Scholar
Vogel, H. et al. The digestive and defensive basis of carcass utilization by the burying beetle and its microbiota. Nat. Commun. 6, 1–10 (2017).
Shukla, S. P. et al. Microbiome-assisted carrion preservation aids larval development in a burying beetle. Proc. Natl. Acad. Sci. USA. 115, 11274–11279 (2018).
Google Scholar
Duarte, A., Welch, M., Swannack, C., Wagner, J. & Kilner, R. M. Strategies for managing rival bacterial communities: Lessons from burying beetles. J. Anim. Ecol. 87, 414–427 (2018).
Google Scholar
Miller, C. J., Bates, S. T., Gielda, L. M. & CurtisCreighton, J. Examining transmission of gut bacteria to preserved carcass via anal secretions in Nicrophorus defodiens. PLoS ONE 14, 1–13 (2019).
Suzuki, S. Suppression of fungal development on carcasses the burying beetle Nicrophorus quadripunctatus (Coleoptera: Silphidae). Entomol. Sci. 4, 403–405 (2001).
Eggert, A. K., Reinking, M. & Müller, J. K. Parental care improves offspring survival and growth in burying beetles. Anim. Behav. 55, 97–107 (1998).
Google Scholar
Trumbo, S. T. Feeding upon and preserving a carcass: The function of prehatch parental care in a burying beetle. Anim. Behav. 130, 241–249 (2017).
Smiseth, P. T., Darwell, C. T. & Moore, A. J. Partial begging: An empirical model for the early evolution of offspring signalling. Proc. R. Soc. B Biol. Sci. 270, 1773–1777 (2003).
Rauter, C. M. & Moore, A. J. Do honest signalling models of offspring solicitation apply to insects?. Proc. R. Soc. B Biol. Sci. 266, 1691–1696 (1999).
Royle, N. J., Russell, A. F. & Wilson, A. J. The evolution of flexible parenting. Science 345, 776–781 (2014).
Google Scholar
Capodeanu-Nägler, A., Eggert, A. K., Vogel, H., Sakaluk, S. K. & Steiger, S. Species divergence in offspring begging and parental provisioning is linked to nutritional dependency. Behav. Ecol. 29, 42–50 (2018).
Müller, J. K. Replacement of a lost clutch: A strategy for optimal resource utilization in Necrophorus vespilloides (Coleoptera: Silphidae). Ethology 76, 74–80 (1987).
Müller, J. K., Braunisch, V., Hwang, W. & Eggert, A. K. Alternative tactics and individual reproductive success in natural associations of the burying beetle, Nicrophorus vespilloides. Behav. Ecol. 18, 196–203 (2007).
Müller, J. K. & Eggert, A. K. Time-dependent shifts between infanticidal and parental behavior in female burying beetles a mechanism of indirect mother-offspring recognition. Behav. Ecol. Sociobiol. 27, 11–16 (1990).
Smiseth, P. T. & Parker, H. J. Is there a cost to larval begging in the burying beetle Nicrophorus vespilloides?. Behav. Ecol. 19, 1111–1115 (2008).
Steiger, S. Bigger mothers are better mothers: Disentangling size-related prenatal and postnatal maternal effects. Proc. R. Soc. B. 280, 1225 (2013).
Keppner, E. M. et al. Beyond cuticular hydrocarbons: Chemically mediated mate recognition in the subsocial burying beetle Nicrophorus vespilloides. J. Chem. Ecol. 43, 84–93 (2017).
Google Scholar
Schrader, M. & Galanek, J. Stridulation is unimportant for effective parental care in two species of burying beetle. Ecol. Entomol. 47, 1–18 (2021).
Curtis Creighton, J., Heflin, N. D. & Belk, M. C. Cost of reproduction, resource quality, and terminal investment in a burying beetle. Am. Nat. 174, 673–684 (2009).
Google Scholar
Engel, K. C. et al. A hormone-related female anti-aphrodisiac signals temporary infertility and causes sexual abstinence to synchronize parental care. Nat. Commun. 7, 1–10 (2016).
Trumbo, S. T. Reproductive benefits of infanticide in a biparental burying beetle Nicrophorus orbicollis. Behav. Ecol. Sociobiol. 27, 269–273 (1990).
Skinner, S. W. Clutch size as an optimal foraging problem for insects. Behav. Ecol. Sociobiol. 17, 231–238 (1985).
Lack, D. The significance of clutch-size. Ibis 89, 302–352 (1946).
Lyon, B. E. Optimal clutch size and conspecific brood parasitism. Nature 392, 380–383 (1998).
Google Scholar
Parker, G. A. & Courtney, S. P. Models of clutch size in insect oviposition. Theor. Popul. Biol. 26, 27–48 (1984).
Google Scholar
Godfray, H. C. J., Partridge, L. & Harvey, P. H. Clutch size. Annu. Rev. Ecol. Syst. 22, 409–429 (1991).
Hardy, I. C. W., Griffiths, N. T. & Godfray, H. C. J. Clutch size in a parasitoid wasp: a manipulation experiment. J. Anim. Ecol. 61, 121–129 (1992).
Zaviezo, T. & Mills, N. Factors influencing the evolution of clutch size in a gregarious insect parasitoid. J. Anim. Ecol. 69, 1047–1057 (2000).
Bezemer, T. M. & Mills, N. J. Clutch size decisions of a gregarious parasitoid under laboratory and field conditions. Anim. Behav. 66, 1119–1128 (2003).
Parker, G. A., Royle, N. J. & Hartley, I. R. Intrafamilial conflict and parental investment: a synthesis. Philos. Trans. R. Soc. B 357, 295–307 (2002).
Godfray, H. C. J. & Parker, G. A. Clutch size, fecundity and parent-offspring conflict. Philos. Trans. R. Soc. Lond. B 332, 67–79 (1991).
Google Scholar
Alexander, R. D. The evolution of social behavior. Annu. Rev. Ecol. Syst. 5, 325–383 (1974).
Kilner, R. M. & Hinde, C. A. Information warfare and parent-offspring conflict. Adv. Stud. Behav. 38, 283–336 (2008).
Kilner, R. M. & Johnstone, R. A. Begging the question: are offspring solicitation behaviours signals of need?. Trends Ecol. Evol. 12, 11–15 (1997).
Google Scholar
Godfray, H. C. J. Signalling of need by offspring to their parents. Lett. Nat. 352, 328–330 (1991).
Johnstone, R. A. Begging signals and parent-offspring conflict: Do parents always win?. Proc. R. Soc. B. 263, 1677–1681 (1996).
Google Scholar
Parker, G. A., Royle, N. J. & Hartley, I. R. Begging scrambles with unequal chicks: Interactions between need and competitive ability. Ecol. Lett. 5, 206–215 (2002).
Keller, L. & Nonacs, P. The role of queen pheromones in social insects: Queen control or queen signal?. Anim. Behav. 45, 787–794 (1993).
Kocher, S. D. & Grozinger, C. M. Cooperation, conflict, and the evolution of queen pheromones. J. Chem. Ecol. 37, 1263–1275 (2011).
Google Scholar
Oi, C. A. et al. The origin and evolution of social insect queen pheromones: Novel hypotheses and outstanding problems. BioEssays 37, 808–821 (2015).
Google Scholar
Smiseth, P. T. & Moore, A. J. Does resource availability affect offspring begging and parental provisioning in a partially begging species?. Anim. Behav. 63, 577–585 (2002).
Andrews, C. P. & Smiseth, P. T. Differentiating among alternative models for the resolution of parent-offspring conflict. Behav. Ecol. 24, 1185–1191 (2013).
Steiger, S., Peschke, K., Francke, W. & Müller, J. K. The smell of parents: Breeding status influences cuticular hydrocarbon pattern in the burying beetle Nicrophorus vespilloides. Proc. R. Soc. B Biol. Sci. 274, 2211–2220 (2007).
Google Scholar
Steiger, S., Franz, R., Eggert, A. K. & Müller, J. K. The Coolidge effect, individual recognition and selection for distinctive cuticular signatures in a burying beetle. Proc. R. Soc. B Biol. Sci. 275, 1831–1838 (2008).
Chemnitz, J., Jentschke, P. C., Ayasse, M. & Steiger, S. Beyond species recognition: somatic state affects long-distance sex pheromone communication. Proc. R. Soc. B 282, 1–9 (2015).
Google Scholar
Steiger, S. Recognition and family life: Recognition mechanisms in the biparental burying beetle. in Social Recognition in Invertebrates: The Knowns and the Unknowns (eds. Aquiloni, L. & Tricarico, E.) 249–266 (2015).
Takata, M., Mitaka, Y., Steiger, S. & Mori, N. A parental volatile pheromone triggers offspring begging in a burying beetle. Science 19, 1260–1278 (2019).
Mäenpää, M. I. & Smiseth, P. T. Resource allocation is determined by both parents and offspring in a burying beetle. J. Evol. Biol. 33(11), 1567–1578 (2020).
Google Scholar
Mattey, S. N., Richardson, J., Ratz, T. & Smiseth, P. T. Effects of offspring and parental inbreeding on parent-offspring communication. Am. Nat. 191, 716–725 (2018).
Google Scholar
Steiger, S. & Stökl, J. Pheromones regulating reproduction in subsocial beetles: insights with references to eusocial insects. J. Chem. Ecol. 44, 785–795 (2018).
Google Scholar
Haig, D. Genetic conflict in human pregnancy. Q. Rev. Biol. 68, 495–532 (1993).
Google Scholar
Paquet, M., Drummond, H. & Smiseth, P. T. Offspring are predisposed to beg more towards females in the burying beetle Nicrophorus vespilloides. Anim. Behav. 141, 195–201 (2018).
Sakaluk, S. K., Eggert, A.-K. & Müller, J. K. The ‘widow effect’ and its consequences for reproduction in burying beetles, Nicrophorus vespilloides (Coleoptera: Silphidae). Ethology 104, 553–564 (1998).
De Gasperin, O., Duarte, A., Troscianko, J. & Kilner, R. M. Fitness costs associated with building and maintaining the burying beetle’s carrion nest. Sci. Rep. 6, 1–6 (2016).
Bartlett, J. Male mating success and paternal care in Nicrophorus vespilloides (Coleoptera: Silphidae). Behav. Ecol. Sociobiol. 23, 297–303 (1988).
Müller, J. K., Eggert, A. K. & Sakaluk, S. K. Carcass maintenance and biparental brood care in burying beetles: are males redundant?. Ecol. Entomol. 23, 195–200 (1998).
Smiseth, P. T., Dawson, C., Varley, E. & Moore, A. J. How do caring parents respond to mate loss? Differential response by males and females. Anim. Behav. 69, 551–559 (2005).
Parker, D. J. et al. Transcriptomes of parents identify parenting strategies and sexual conflict in a subsocial beetle. Nat. Commun. 6, 1–10 (2015).
Google Scholar
Keppner, E. M., Ayasse, M. & Steiger, S. Contribution of males to brood care can compensate for their food consumption from a shared resource. Ecol. Evol. 10, 3535–3543 (2020).
Google Scholar
Schedwill, P., Paschkewitz, S., Teubner, H. & Steinmetz, N. From the host’ s point of view: Effects of variation in burying beetle brood care and brood size on the interaction with parasitic mites. Plosone 15, 1–14 (2020).
Pilakouta, N., Hanlon, E. J. H. & Smiseth, P. T. Biparental care is more than the sum of its parts: Experimental evidence for synergistic effects on offspring fitness. Proc. R. Soc. B. 285, 875 (2018).
Chemnitz, J., Bagrii, N., Ayasse, M. & Steiger, S. Staying with the young enhances the fathers’ attractiveness in burying beetles. Evolution 71, 985–994 (2017).
Google Scholar
