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Titolo:
Within-tree variation in density and survival of leafminers on oak Quercusdentata
Autore:
Shibata, S; Ishida, TA; Soeya, F; Morino, N; Yoshida, K; Sato, H; Kimura, MT;
Indirizzi:
Hokkaido Univ, Grad Sch Environm Earth Sci, Sapporo, Hokkaido 0600810, Japan Hokkaido Univ Sapporo Hokkaido Japan 0600810 oro, Hokkaido 0600810, Japan Tomakomai Sci Museum, Tomakomai, Hokkaido 0530011, Japan Tomakomai Sci Museum Tomakomai Hokkaido Japan 0530011 aido 0530011, Japan Nara Womens Univ, Fac Sci, Dept Biol Sci, Nara 6308506, Japan Nara Womens Univ Nara Japan 6308506 , Dept Biol Sci, Nara 6308506, Japan
Titolo Testata:
ECOLOGICAL RESEARCH
fascicolo: 1, volume: 16, anno: 2001,
pagine: 135 - 143
SICI:
0912-3814(200103)16:1<135:WVIDAS>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
LEAF-MINING INSECTS; CANOPY TREES; MOTH LARVAE; QUALITY; LEPIDOPTERA; PREFERENCE; DISPERSION; HERBIVORES; SELECTION; FAGACEAE;
Keywords:
leafminers; oak; seasonality; within-tree variation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Kimura, MT Hokkaido Univ, Grad Sch Environm Earth Sci, Sapporo, Hokkaido 0600810, Japan Hokkaido Univ Sapporo Hokkaido Japan 0600810 do 0600810, Japan
Citazione:
S. Shibata et al., "Within-tree variation in density and survival of leafminers on oak Quercusdentata", ECOL RES, 16(1), 2001, pp. 135-143

Abstract

The density and survival of leafminers were examined on 50 sun leaves fromeach of 65 Quercus dentata Thunb, individuals in northern Japan in 1997 and 1998. Phyllonorycter (two species), Caloptilia tone species) and Stigmella (three species) were abundant or common on this oak in the study area. These leafminers appeared after mid-June, whereas most externally feeding caterpillars occurred from late May to early June when the water cont ent and nitrogen concentration of leaves were high. The density of these leafminerswas about four times higher in 1998 than in 1997. A negative correlation was more often observed between mine density and leaf size, leaf wet weight per area or leaf toughness in the Phyllonorycter species, but the opposite correlation was more frequent for Caloptilia and Stigmella species. Conversely, no clear relation was observed between the survival of Phyllonorycter.larvae and leaf traits. In all leafminers except the gregarious Stigmella species, the mine density was more often positively correlated with leaf damage by chewing insects, and also the survival of Phyllonorycter larvae wasoften positively correlated with leaf damage. In the Phyllonorycter species, the survival of larvae tended to increase with the increase in density at the autumn generation. The correlation in the densities of mines between the summer and autumn generations was more frequently positive in the Pyllonorycter and Caloptilia species. In addition, the densities of different leafminers were often positively correlated. Thus, relations among leafminers, between leafminers and externally feeding caterpillars, and also between herbivores and host plants are complicated.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/09/20 alle ore 21:28:47