The effects of Dicranognathus nebulosus (Coleoptera: Attelabidae) on acorns of Quercus leucotrichophora

Kaushal, B. R.; Kalia, Shamila

doi:10.1111/j.1365-2311.1989.tb00775.x

Cited by 7 publications

(3 citation statements)

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“…If insect feeding does not injure the developing embryo, these partly damaged acorns, combined with large seed mass in acorns (often several grams), can successfully germinate (as also noted by others, e.g. Oliver and Chapin, 1984;Kaushal and Kalia, 1989;Weckerly et al, 1989;Andersson, 1992;Steele et al, 1993) to then establish as viable seedlings comparable to undamaged acorns (e.g. Fukumoto and Kajimura, 2000;Branco et al, 2002;Leiva and Fernández-Alés, 2005, this study).…”

Section: Discussionmentioning

confidence: 78%

“…Fox, 1982;Weckerly et al, 1989;Steele et al, 1993;Smallwood et al, 2001;Vander Wall, 2001), while large seed mass (often several grams) in acorns could tolerate partial consumption by seed predators, because some predatordamaged acorns can germinate (e.g. Oliver and Chapin, 1984;Kaushal and Kalia, 1989;Weckerly et al, 1989;Andersson, 1992;Steele et al, 1993) and even establish as viable seedlings (e.g. Fukumoto and Kajimura, 2000;Branco et al, 2002;Leiva and Fernández-Alés, 2005).…”

Section: Introductionmentioning

confidence: 99%

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Acorn defenses to herbivory from insects: Implications for the joint evolution of resistance, tolerance and escape

Xiao

Harris

Zhang

2007

Forest Ecology and Management

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Section: Discussionmentioning

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Acorn defenses to herbivory from insects: Implications for the joint evolution of resistance, tolerance and escape

Xiao

Harris

Zhang

2007

Forest Ecology and Management

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“…Germination of acorns of Q. leucotrichophora infested by S. glandium has been studied, whereas, germination of acorns infested by D. nebulosus has been reported by KAUSHAL and KALIA (1989).…”

Section: Germination Experimentsmentioning

confidence: 99%

Aspects of the biology and control of three species of acorn weevils infesting oak acorns in Kumaun Himalaya

Kaushal

Pant

Kalia

et al. 1993

J Applied Entomology

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Biology and ecology of three acorn weevils: Dicranognathus nebulosus Redt. (Col., Attelabidae), Sitophilus glandium (Mshl.) (Col., Curculionidae) and Curculio sikkimensis (Hell.) (Col., Curculionidae), which infest acorns of Quercus leucotrochophora A. Camus and Q. floribunda Lindle was studied in the laboratory and in the field. Adults of D. nebulosus and C. sikkimensis laid one egg per infested acorn, and S. glandium laid 0 to 8 (means 5.2 ± 0.47) eggs in an infested acorn of Q. leucotrichophora. Only a single larva of D. nebulosus and C. sikkimensis developed per acorn, and 1 to 5 (mean 3.8 ± 0.3) larvae of S. glandum developed per acorn through the last instar. Larvae of D. nebulosus and S. glandium completed their development in the infested acorn, and C. sikkimensis emerged from the acorn through the last instar and completed its development in the soil. Good synchronization was observed in the life cycle of acorn weevils and phenology of Q. leucotrichophora. An average of 88.7% of acorns were infested by the acorn weevils. Injury to live acorns by weevil larvae reduced germination and seedling growth. Weevil larvae could be controlled by hydrothermal treatment (20 min at 45 °C) of infested acorns in the germination experiments. Zusammenfassung Zur Biologie und Bekämpfung von drei Käferarten in Kumaun Himalaya, Indien, die Eicheln befallen Im Labor und Freiland wurden die Biologie und Ökologie der 3 Käferarten Dicranognathus nebulosus Redt. (Col., Attelabidae), Sitophilus glandium (Mshl.) (Col., Curculionidae) und Curculio sikkimensis (Hell.) (Col., Curculionidae), welche die Eicheln von Quercus leucotrochophora und C. floribunda befallen, untersucht. Die Weibchen von D. nebulosus und C. sikkimensis legten ein Ei pro Eichel ab, während S. glandium 0 bis 8 Eier (i.M. 5) pro Eichel von Q. leucotrochophora ablegte. Somit entwickelten sich von D. nebulosus und C. sikkimensis in einer Eichel nur je 1 Larve. Von S. glandium dagegen gelangten bis zu 5 (i. M. 3) Larven in einer Eichel zum letzten Larvenstadium. Während bei D. nebulosus und S. glandium die Larven ihre Entwicklung in der Eichel vollendeten, verließen die Altlarven von C. sikkimensis die Eichel und beendeten ihre Entwicklung im Boden. Es bestand eine gute Synchronisation zwischen der Phänologie von Quercus leucotrichophora und dem Lebenszyklus der Eichelkäfer. Die 3 Käferarten befielen im Untersuchungszeitraum i. M. 88,7 % der Eicheln von Q. leucotrichophora. Der Befall lebender Eicheln durch die Käferlarven führte zur Verminderung der Keimung und des Sämlingswachstums. Die Käferlarven konnten mit Hilfe einer Hitzebehandlung (20 min bei 45 °C) der Eicheln erfolgreich, d.h. im Sinne der Erhaltung der Keimkraft, bekämpft werden.

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Effects of Insect Predation on Hypocotyl Survival and Germination Success of Mature Quercus variabilis Acorns

Fukumoto

Kajimura

2000

Journal of Forest Research

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The effects of Dicranognathus nebulosus (Coleoptera: Attelabidae) on acorns of Quercus leucotrichophora

Cited by 7 publications

References 2 publications

Acorn defenses to herbivory from insects: Implications for the joint evolution of resistance, tolerance and escape

Acorn defenses to herbivory from insects: Implications for the joint evolution of resistance, tolerance and escape

Aspects of the biology and control of three species of acorn weevils infesting oak acorns in Kumaun Himalaya

Effects of Insect Predation on Hypocotyl Survival and Germination Success of Mature Quercus variabilis Acorns

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