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Titolo:
Influence of previous frost damage on tree growth and insect herbivory of Eucalyptus globulus globulus
Autore:
Thomson, VP; Nicotra, AB; Steinbauer, MJ;
Indirizzi:
Australian Natl Univ, Sch Bot & Zool, Canberra, ACT 0200, Australia Australian Natl Univ Canberra ACT Australia 0200 rra, ACT 0200, Australia Australian Natl Univ, Res Sch Biol Sci, Canberra, ACT 0200, Australia Australian Natl Univ Canberra ACT Australia 0200 rra, ACT 0200, Australia Cooperat Res Ctr Sustainable Prod Forestry, Canberra, ACT, Australia Cooperat Res Ctr Sustainable Prod Forestry Canberra ACT Australia tralia CSIRO, Canberra, ACT, Australia CSIRO Canberra ACT AustraliaCSIRO, Canberra, ACT, Australia
Titolo Testata:
AUSTRAL ECOLOGY
fascicolo: 5, volume: 26, anno: 2001,
pagine: 489 - 499
SICI:
1442-9985(2001)26:5<489:IOPFDO>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
STRESSED FOOD PLANTS; RURAL EUCALYPTS; DIETARY QUALITY; MOISTURE STRESS; WATER-STRESS; SNOW GUM; PERFORMANCE; DIEBACK; LEAVES; CAMALDULENSIS;
Keywords:
Anoplognathus chloropyrus; Ctenarytaina eucalypti; frost; Hyalarcta huebneri; insect-plant interactions; plant stress hypothesis; plant vigour hypothesis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
51
Recensione:
Indirizzi per estratti:
Indirizzo: Nicotra, AB Australian Natl Univ, Sch Bot & Zool, Canberra, ACT 0200, Australia Australian Natl Univ Canberra ACT Australia 0200 0, Australia
Citazione:
V.P. Thomson et al., "Influence of previous frost damage on tree growth and insect herbivory of Eucalyptus globulus globulus", AUSTRAL EC, 26(5), 2001, pp. 489-499

Abstract

The plant stress hypothesis suggests that some herbivores favour stressed plants, whereas the plant vigour hypothesis proposes that other herbivores prefer vigorous plants. The effects of a prior stress, that of frost damage, were examined on the subsequent growth of Eucalyptus globulus globulus and on the response of insect herbivores. Frost damage affected tree growth by reducing new leaf area and increasing specific leaf area (SLA). However, herbivore abundance was not affected by prior frost damage. Two feeding trials using Anoplognathus chloropyrus and Hyalarcta huebneri and a morphometric study of Ctenarytaina eucalypti were conducted to assess the performanceof herbivores on trees that had suffered more or less frost damage. Consumption by A. chloropyrus and H. huebneri was unaffected by foliage origin (damaged versus healthy). Hyalarcta huebneri grew faster when fed leaves frompreviously damaged trees, and C. eucalypti from previously damaged trees were larger than those from healthy trees. Enhanced insect performance on frost damaged plants may have resulted from the high specific leaf area (mostlikely thinner) leaves. The herbivore abundance data did not support the hypothesis that previously frost damaged plants are preferred by insects. However, increased growth of H. huebneri and larger body size of C. eucalyption damaged trees indicates that previously stressed trees may produce leaves of higher nutritional value.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/02/20 alle ore 11:42:03