Time Limitation, Egg Limitation, the Cost of Oviposition, and Lifetime Reproduction by an Insect in Nature

Rosenheim, Jay A.; Jepsen, Sarina; Matthews, Christopher E.; Smith, David Solance; Rosenheim, Micah R.

doi:10.1086/591677

Cited by 86 publications

(75 citation statements)

References 63 publications

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“…It implies that age-specific reproductive schedules are evolving to track changes in the population survival schedule, thus optimizing reproductive fitness, while the survival schedule is influenced by the invaded habitat or is subject to genetic drift. Various forces which shape reproduction in wild insect populations have been identified in Rosenheim et al (2008) and the references quoted there. Discussion of related optimization problems can be found in Vaupel et al (2004) and Charnov et al (2007).…”

Section: Discussionmentioning

confidence: 99%

Reproduction is adapted to survival characteristics across geographically isolated medfly populations

Müller

Diamantidis

et al. 2009

Proc. R. Soc. B.

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We propose the hypothesis that individual longitudinal trajectories of fertility are closely coupled to varying survival schedules across geographically isolated populations of the same species, in such a way that peak reproduction takes place before substantial increases in mortality are observed. This reproductive adaptation hypothesis is investigated for medflies through a statistical analysis of biodemographic data that were obtained for female medflies from six geographically far apart regions. The following results support the hypothesis: (i) both survival and reproductive schedules differ substantially between these populations, where early peaks and subsequently fast declining reproduction are observed for shortlived and protracted reproductive schedules for long-lived flies; (ii) when statistically adjusting reproduction for the observed differences in survival, the differences in reproductive schedules largely vanish, and thus the observed differences in fertility across the populations can be explained by differences in population-specific longevity; and (iii) specific survival patterns of the medflies belonging to a specific population predict the individual reproductive schedule for the flies in this population. The analysis is based on innovative statistical tools from functional data analysis. Our findings are consistent with an adaptive mechanism whereby trajectories of fertility evolve in response to specific constraints inherent in the population survival schedules.

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Section: Discussionmentioning

confidence: 99%

Reproduction is adapted to survival characteristics across geographically isolated medfly populations

Müller

Diamantidis

et al. 2009

Proc. R. Soc. B.

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“…Therefore, wasp fecundity is likely to be frequently limited by egg load following colonization (Minkenberg et al 1992;Heimpel and Rosenheim 1998;Rosenheim et al 2008). Lifetime egg load can be estimated by counting mature and immature oocytes at emergence (Jervis et al 2005), as has been used to compare potential fecundity broadly across holometabolous insects (Jervis et al 2007) and specifically among nonpollinating fig wasps (Ghara and Borges 2010).…”

Section: Estimating Egg Load As a Proxy For Fecunditymentioning

confidence: 99%

Trade-Offs and Coexistence in Fluctuating Environments: Evidence for a Key Dispersal-Fecundity Trade-Off in Five Nonpollinating Fig Wasps

Duthie

Abbott

Nason

2015

The American Naturalist

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JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. abstract: The ecological principle of competitive exclusion states that species competing for identical resources cannot coexist, but this principle is paradoxical because ecologically similar competitors are regularly observed. Coexistence is possible under some conditions if a fluctuating environment changes the competitive dominance of species. This change in competitive dominance implies the existence of trade-offs underlying species' competitive abilities in different environments. Theory shows that fluctuating distance between resource patches can facilitate coexistence in ephemeral patch competitors, given a functional trade-off between species dispersal ability and fecundity. We find evidence supporting this trade-off in a guild of five ecologically similar nonpollinating fig wasps and subsequently predict local among-patch species densities. We also introduce a novel colonization index to estimate relative dispersal ability among ephemeral patch competitors. We suggest that a dispersal ability-fecundity trade-off and spatiotemporally fluctuating resource availability commonly co-occur to drive population dynamics and facilitate coexistence in ephemeral patch communities.

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“…canadensis? ), as could happen if there were a cost to having a preference for a host that is not present (Rosenheim et al 2008).…”

Section: Preference Experimentsmentioning

confidence: 99%

Host range evolution is not driven by the optimization of larval performance: the case of Lycaeides melissa (Lepidoptera: Lycaenidae) and the colonization of alfalfa

et al. 2009

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Herbivorous insects that have recently incorporated novel hosts into their diet provide unique opportunities for understanding factors that promote or constrain the evolution of niche breadth. Lycaeides melissa has colonized both cultivated and feral alfalfa (Medicago sativa) throughout much of North America within the past 200 years. We investigated the quality of the novel host as a resource for juvenile development, and asked if the novel host is a preferred host for oviposition relative to a native host (Astragalus canadensis). Larval-performance and oviposition-preference were examined using L. melissa individuals from a population associated with both M. sativa and A. canadensis, and oviposition-preference was also examined in another population associated exclusively with M. sativa. In addition, we investigated the effects of M. sativa and A. canadensis flowers on both preference and performance. Only one of the hosts, M. sativa, has flowers that are accessible to nectaring butterflies, and we hypothesized that the presence of flowers could affect female behavior. We find that the novel host is a relatively poor larval resource: adults that were reared as larvae on M. sativa were roughly one-third the size of adults that were reared on the native host, A. canadensis. The native host, Astragalus canadensis, is the preferred host in choice experiments involving only foliage. However, when flowers were included in preference assays, the native and novel hosts received similar numbers of eggs. Thus, the presence of flowers on hosts in the field might influence the utilization of a novel and inferior larval resource. These results are consistent with a model in which host shifts are driven by adult behavior that does not directly optimize larval performance.

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Time Limitation, Egg Limitation, the Cost of Oviposition, and Lifetime Reproduction by an Insect in Nature

Cited by 86 publications

References 63 publications

Reproduction is adapted to survival characteristics across geographically isolated medfly populations

Reproduction is adapted to survival characteristics across geographically isolated medfly populations

Trade-Offs and Coexistence in Fluctuating Environments: Evidence for a Key Dispersal-Fecundity Trade-Off in Five Nonpollinating Fig Wasps

Host range evolution is not driven by the optimization of larval performance: the case of Lycaeides melissa (Lepidoptera: Lycaenidae) and the colonization of alfalfa

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