e-journal

Specificity of extrafloral nectar induction by herbivores differs among native and invasive populations of tallow tree

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† Background and Aims:
Invasive plants can be released from specialist herbivores and encounter novel generalists in their introduced ranges, leading to variation in defence among native and invasive populations. However, fewstudies
have examined how constitutive and induced indirect defences change during plant invasion, especially during the juvenile stage.

† Methods:
Constitutive extrafloral nectar (EFN) production of native and invasive populations of juvenile tallowtree
(Triadica sebifera) were compared, and leaf clipping, and damage by a native specialist (Noctuid) and two native generalist caterpillars (Noctuid and Limacodid) were used to examine inducible EFN production.

† Key results:
Plants fromintroduced populations had more leaves producing constitutiveEFNthan did native populations, but the content of soluble solids ofEFNdid not differ. Herbivores inducedEFNproductionmore than simulated
herbivory. The specialist (Noctuid) induced more EFN than either generalist for native populations. The content of soluble solids in EFN was higher (2.1 times), with the specialist vs. the generalists causing the stronger response for native populations, but the specialist response was always comparable with the generalist responses for invasive populations.

†Conclusions:
These results suggest that constitutive and induced indirect defences are retained in juvenile plants of
invasive populations even during plant establishment, perhaps due to generalist herbivory in the introduced range. However, responses specific to a specialist herbivore may be reduced in the introduced range where specialists are absent. This decreased defence may benefit specialist insects that are introduced for classical biological control of invasive plants.

Key words: Constitutive and inducible defences, extrafloral nectar, EFN, juvenile plants, invasion ecology,
specialists, generalists, tallow tree, Triadica sebifera, caterpillars, Noctuidae, Limacodidae.

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Informasi Detail

Judul Seri

Annals of Botany

No. Panggil

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Penerbit

Oxford : Oxford University Press on behalf of the Annals of Botany Company., 2013

Deskripsi Fisik

Annals of Botany 112: 751–756, 2013

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

112: 2013

Subjek

EKOFISIOLOGI TANAMAN

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

Versi lain/terkait

Lampiran Berkas

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