Prolonged Diapause of Specialist Seed-Feeders Makes Predator Satiation Unstable in Masting of Quercus crispula
Quercus crispula (=Q. mongolica var. grosseserrata) is the predominant tree species in cool temperate, mixed broadleaf/conifer forests in northern Japan. We compared 11 years of data on acorn production in a population of Q. crispula, with data on seed-insect populations, to try to answer the follow...
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| Veröffentlicht in: | Oecologia 2003-11, Vol.137 (3), p.392-398 |
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| creator | MAETO, Kaoru OZAKI, Kennichi |
| description | Quercus crispula (=Q. mongolica var. grosseserrata) is the predominant tree species in cool temperate, mixed broadleaf/conifer forests in northern Japan. We compared 11 years of data on acorn production in a population of Q. crispula, with data on seed-insect populations, to try to answer the following questions: (1) Does Q. crispula show a regular pattern of masting? (2) How long do principal seed predators remain in diapause? (3) How do the seed predators affect the pattern of predator satiation? Q. crispula showed a tendency to alternate bearing, with significant synchrony between individual trees. The principal acorn-feeding insects (Curculio spp. weevils), which infested 25%-70% of matured acorns, generally exhibited a prolonged diapause of 2 years. No significant negative relationship was found between the rate of injury by the weevils and the density of mature acorns, indicating that simple predator satiation fails due to the synchrony of the life-cycle of acornfeeding insects and the periodical production of acorns. However, the rate of injury by the weevils was negatively correlated with the relative abundance of mature acorns to the number of weevil larvae that had matured 2 years previously. Thus, the proportion of sound acorns notably increased in a rich crop after a disturbance in alternate bearing. Prolonged diapause of specific seed predators is critical in determining the peak year of sound-seed production. |
| doi_str_mv | 10.1007/s00442-003-1381-6 |
| format | Article |
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We compared 11 years of data on acorn production in a population of Q. crispula, with data on seed-insect populations, to try to answer the following questions: (1) Does Q. crispula show a regular pattern of masting? (2) How long do principal seed predators remain in diapause? (3) How do the seed predators affect the pattern of predator satiation? Q. crispula showed a tendency to alternate bearing, with significant synchrony between individual trees. The principal acorn-feeding insects (Curculio spp. weevils), which infested 25%-70% of matured acorns, generally exhibited a prolonged diapause of 2 years. No significant negative relationship was found between the rate of injury by the weevils and the density of mature acorns, indicating that simple predator satiation fails due to the synchrony of the life-cycle of acornfeeding insects and the periodical production of acorns. However, the rate of injury by the weevils was negatively correlated with the relative abundance of mature acorns to the number of weevil larvae that had matured 2 years previously. Thus, the proportion of sound acorns notably increased in a rich crop after a disturbance in alternate bearing. Prolonged diapause of specific seed predators is critical in determining the peak year of sound-seed production.</description><identifier>ISSN: 0029-8549</identifier><identifier>EISSN: 1432-1939</identifier><identifier>DOI: 10.1007/s00442-003-1381-6</identifier><identifier>PMID: 13680352</identifier><identifier>CODEN: OECOBX</identifier><language>eng</language><publisher>Berlin: Springer-Verlag</publisher><subject>Alternate bearing ; Animal and plant ecology ; Animal, plant and microbial ecology ; Animals ; Autocorrelation ; Autoecology ; Biological and medical sciences ; Climate models ; Coleoptera ; Coniferous forests ; Demecology ; Diapause ; Forest ecology ; Fundamental and applied biological sciences. Psychology ; Insect larvae ; Insects ; Larva ; Larvae ; Phytophagous insects ; Plant Animal Interactions ; Plant species ; Plants and fungi ; Plants, Edible ; Population Dynamics ; Predators ; Predatory Behavior ; Protozoa. 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We compared 11 years of data on acorn production in a population of Q. crispula, with data on seed-insect populations, to try to answer the following questions: (1) Does Q. crispula show a regular pattern of masting? (2) How long do principal seed predators remain in diapause? (3) How do the seed predators affect the pattern of predator satiation? Q. crispula showed a tendency to alternate bearing, with significant synchrony between individual trees. The principal acorn-feeding insects (Curculio spp. weevils), which infested 25%-70% of matured acorns, generally exhibited a prolonged diapause of 2 years. No significant negative relationship was found between the rate of injury by the weevils and the density of mature acorns, indicating that simple predator satiation fails due to the synchrony of the life-cycle of acornfeeding insects and the periodical production of acorns. However, the rate of injury by the weevils was negatively correlated with the relative abundance of mature acorns to the number of weevil larvae that had matured 2 years previously. Thus, the proportion of sound acorns notably increased in a rich crop after a disturbance in alternate bearing. Prolonged diapause of specific seed predators is critical in determining the peak year of sound-seed production.</description><subject>Alternate bearing</subject><subject>Animal and plant ecology</subject><subject>Animal, plant and microbial ecology</subject><subject>Animals</subject><subject>Autocorrelation</subject><subject>Autoecology</subject><subject>Biological and medical sciences</subject><subject>Climate models</subject><subject>Coleoptera</subject><subject>Coniferous forests</subject><subject>Demecology</subject><subject>Diapause</subject><subject>Forest ecology</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Insect larvae</subject><subject>Insects</subject><subject>Larva</subject><subject>Larvae</subject><subject>Phytophagous insects</subject><subject>Plant Animal Interactions</subject><subject>Plant species</subject><subject>Plants and fungi</subject><subject>Plants, Edible</subject><subject>Population Dynamics</subject><subject>Predators</subject><subject>Predatory Behavior</subject><subject>Protozoa. 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Invertebrata</topic><topic>Quercus - growth & development</topic><topic>Relative abundance</topic><topic>Satiation</topic><topic>Seeds - growth & development</topic><topic>Weevils</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>MAETO, Kaoru</creatorcontrib><creatorcontrib>OZAKI, Kennichi</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Animal Behavior Abstracts</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Ecology Abstracts</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Oceanic Abstracts</collection><collection>Virology and AIDS Abstracts</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Biology Database (Alumni Edition)</collection><collection>Medical Database (Alumni Edition)</collection><collection>ProQuest Pharma Collection</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>ProQuest Biological Science Collection</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biological Science Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Genetics Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Oecologia</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>MAETO, Kaoru</au><au>OZAKI, Kennichi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Prolonged Diapause of Specialist Seed-Feeders Makes Predator Satiation Unstable in Masting of Quercus crispula</atitle><jtitle>Oecologia</jtitle><addtitle>Oecologia</addtitle><date>2003-11-01</date><risdate>2003</risdate><volume>137</volume><issue>3</issue><spage>392</spage><epage>398</epage><pages>392-398</pages><issn>0029-8549</issn><eissn>1432-1939</eissn><coden>OECOBX</coden><abstract>Quercus crispula (=Q. mongolica var. grosseserrata) is the predominant tree species in cool temperate, mixed broadleaf/conifer forests in northern Japan. We compared 11 years of data on acorn production in a population of Q. crispula, with data on seed-insect populations, to try to answer the following questions: (1) Does Q. crispula show a regular pattern of masting? (2) How long do principal seed predators remain in diapause? (3) How do the seed predators affect the pattern of predator satiation? Q. crispula showed a tendency to alternate bearing, with significant synchrony between individual trees. The principal acorn-feeding insects (Curculio spp. weevils), which infested 25%-70% of matured acorns, generally exhibited a prolonged diapause of 2 years. No significant negative relationship was found between the rate of injury by the weevils and the density of mature acorns, indicating that simple predator satiation fails due to the synchrony of the life-cycle of acornfeeding insects and the periodical production of acorns. However, the rate of injury by the weevils was negatively correlated with the relative abundance of mature acorns to the number of weevil larvae that had matured 2 years previously. Thus, the proportion of sound acorns notably increased in a rich crop after a disturbance in alternate bearing. Prolonged diapause of specific seed predators is critical in determining the peak year of sound-seed production.</abstract><cop>Berlin</cop><pub>Springer-Verlag</pub><pmid>13680352</pmid><doi>10.1007/s00442-003-1381-6</doi><tpages>7</tpages></addata></record> |
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| ispartof | Oecologia, 2003-11, Vol.137 (3), p.392-398 |
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| subjects | Alternate bearing Animal and plant ecology Animal, plant and microbial ecology Animals Autocorrelation Autoecology Biological and medical sciences Climate models Coleoptera Coniferous forests Demecology Diapause Forest ecology Fundamental and applied biological sciences. Psychology Insect larvae Insects Larva Larvae Phytophagous insects Plant Animal Interactions Plant species Plants and fungi Plants, Edible Population Dynamics Predators Predatory Behavior Protozoa. Invertebrata Quercus - growth & development Relative abundance Satiation Seeds - growth & development Weevils |
| title | Prolonged Diapause of Specialist Seed-Feeders Makes Predator Satiation Unstable in Masting of Quercus crispula |
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