PoplarV1, Main, Exploration, bibRecord, 002560

Parental resource and offspring liability: the influence of extrafloral nectar on oviposition by a leaf-mining moth.

Identifieur interne : 002560 ( Main/Exploration ); précédent : 002559; suivant : 002561

Parental resource and offspring liability: the influence of extrafloral nectar on oviposition by a leaf-mining moth.

Auteurs : Brent Mortensen [États-Unis] ; Diane Wagner ; Patricia Doak

Source :

Oecologia [ 1432-1939 ] ; 2013.

RBID : pubmed:23223861

Descripteurs français

KwdFr :
- Animaux (MeSH), Femelle (MeSH), Feuilles de plante (MeSH), Nectar des plantes (MeSH), Oviposition (MeSH), Papillons de nuit (physiologie), Populus (parasitologie).
MESH :
- parasitologie : Populus.
- physiologie : Papillons de nuit.
- Animaux, Femelle, Feuilles de plante, Nectar des plantes, Oviposition.

English descriptors

KwdEn :
- Animals (MeSH), Female (MeSH), Moths (physiology), Oviposition (MeSH), Plant Leaves (MeSH), Plant Nectar (MeSH), Populus (parasitology).
MESH :
- chemical : Plant Nectar.
- parasitology : Populus.
- physiology : Moths.
- Animals, Female, Oviposition, Plant Leaves.

Abstract

For many insect herbivores, maternal host selection is a critical determinant of offspring survival; however, maternal fitness is also affected by adult resources such as food availability. Consequently, adult resources may promote oviposition in sub-optimal locations when measured in terms of offspring performance. We tested whether oviposition site preference is primarily shaped by proximity to adult food resources or offspring performance in the aspen leaf miner (Phyllocnistis populiella). Quaking aspen (Populus tremuloides) produce extrafloral nectaries (EFNs) on a subset of their leaves. EFN expression on leaves is associated with decreased P. populiella damage and larval performance; however, P. populiella adults feed from EFNs. We reduced extrafloral nectar availability on entire aspen ramets and excluded crawling predators in a full factorial experiment at two sites in interior Alaska, USA. Patterns of egg deposition by P. populiella appeared to be primarily affected by offspring survival rather than adult resource availability. While oviposition was unaffected by nectar availability, adult moths laid fewer eggs on leaves with than without EFNs. By avoiding leaves with EFNs, moths increased offspring survival. Both moths and predators distinguished between leaves with and without EFNs even when nectar and visual cues were obscured, and therefore may respond to chemical cues associated with EFN expression.

DOI: 10.1007/s00442-012-2525-3
PubMed: 23223861

Affiliations:

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Le document en format XML

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<front><div type="abstract" xml:lang="en">For many insect herbivores, maternal host selection is a critical determinant of offspring survival; however, maternal fitness is also affected by adult resources such as food availability. Consequently, adult resources may promote oviposition in sub-optimal locations when measured in terms of offspring performance. We tested whether oviposition site preference is primarily shaped by proximity to adult food resources or offspring performance in the aspen leaf miner (Phyllocnistis populiella). Quaking aspen (Populus tremuloides) produce extrafloral nectaries (EFNs) on a subset of their leaves. EFN expression on leaves is associated with decreased P. populiella damage and larval performance; however, P. populiella adults feed from EFNs. We reduced extrafloral nectar availability on entire aspen ramets and excluded crawling predators in a full factorial experiment at two sites in interior Alaska, USA. Patterns of egg deposition by P. populiella appeared to be primarily affected by offspring survival rather than adult resource availability. While oviposition was unaffected by nectar availability, adult moths laid fewer eggs on leaves with than without EFNs. By avoiding leaves with EFNs, moths increased offspring survival. Both moths and predators distinguished between leaves with and without EFNs even when nectar and visual cues were obscured, and therefore may respond to chemical cues associated with EFN expression.</div>
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Parental resource and offspring liability: the influence of extrafloral nectar on oviposition by a leaf-mining moth.

Parental resource and offspring liability: the influence of extrafloral nectar on oviposition by a leaf-mining moth.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki