Seed-hoarding of Edward's long-tailed rats Leopoldamys edwardsi in response to weevil infestation in cork oak Quer-cus variabilis

Seed hoarders show different hoarding and eating responses towards insect-infested seeds that can affect the fitness of both the seeds and insects. It remains unclear how seed hoarders adopt different strategies in eating and hoarding infested seeds with and without larvae concealed inside. Here we...

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Main Author: Jinrui CHENG, Hongmao ZHANG
Format: Article
Language:English
Published: Oxford University Press 2011-02-01
Series:Current Zoology
Subjects:
Online Access:http://www.currentzoology.org/paperdetail.asp?id=11753
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author Jinrui CHENG, Hongmao ZHANG
author_facet Jinrui CHENG, Hongmao ZHANG
author_sort Jinrui CHENG, Hongmao ZHANG
collection DOAJ
description Seed hoarders show different hoarding and eating responses towards insect-infested seeds that can affect the fitness of both the seeds and insects. It remains unclear how seed hoarders adopt different strategies in eating and hoarding infested seeds with and without larvae concealed inside. Here we investigated hoarding and eating responses of Edward’s long-tailed rats Leopoldamys edwardsi (scatter hoarders) to weevil infestation of cork oak Quercus variabilis seeds within outdoor enclosures. We provided sound seeds, larvae-emerged seeds, (infested seeds where larvae have emerged) and larvae-concealed seeds (infested seeds with larvae concealed inside) to subjects independently (each seed type presented separately) and in pairwise combinations (sound and larvae-emerged seeds; sound and larvae-concealed seeds). We found that L. edwardsi removed, scatter hoarded and ate fewer larvae-emerged seeds than sound seeds. No difference was found between sound seeds and larvae-concealed seeds. These results suggest that sound and larvae-concealed seeds are more favored by L. edwardsi than larvae-emerged seeds. We posit that not only plants but also insects may benefit from the behavioral responses of hoarders to seed infestation under natural conditions [Current Zoology 57 (1): 50–55, 2011].
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spelling doaj.art-59955b8d104147ad8bd6833306ea4f182022-12-21T17:30:55ZengOxford University PressCurrent Zoology1674-55072011-02-015715055Seed-hoarding of Edward's long-tailed rats Leopoldamys edwardsi in response to weevil infestation in cork oak Quer-cus variabilisJinrui CHENG, Hongmao ZHANGSeed hoarders show different hoarding and eating responses towards insect-infested seeds that can affect the fitness of both the seeds and insects. It remains unclear how seed hoarders adopt different strategies in eating and hoarding infested seeds with and without larvae concealed inside. Here we investigated hoarding and eating responses of Edward’s long-tailed rats Leopoldamys edwardsi (scatter hoarders) to weevil infestation of cork oak Quercus variabilis seeds within outdoor enclosures. We provided sound seeds, larvae-emerged seeds, (infested seeds where larvae have emerged) and larvae-concealed seeds (infested seeds with larvae concealed inside) to subjects independently (each seed type presented separately) and in pairwise combinations (sound and larvae-emerged seeds; sound and larvae-concealed seeds). We found that L. edwardsi removed, scatter hoarded and ate fewer larvae-emerged seeds than sound seeds. No difference was found between sound seeds and larvae-concealed seeds. These results suggest that sound and larvae-concealed seeds are more favored by L. edwardsi than larvae-emerged seeds. We posit that not only plants but also insects may benefit from the behavioral responses of hoarders to seed infestation under natural conditions [Current Zoology 57 (1): 50–55, 2011].http://www.currentzoology.org/paperdetail.asp?id=11753Larvae survivalSeed discriminationSeed-hoardingSeed dispersalWeevil infestation
spellingShingle Jinrui CHENG, Hongmao ZHANG
Seed-hoarding of Edward's long-tailed rats Leopoldamys edwardsi in response to weevil infestation in cork oak Quer-cus variabilis
Current Zoology
Larvae survival
Seed discrimination
Seed-hoarding
Seed dispersal
Weevil infestation
title Seed-hoarding of Edward's long-tailed rats Leopoldamys edwardsi in response to weevil infestation in cork oak Quer-cus variabilis
title_full Seed-hoarding of Edward's long-tailed rats Leopoldamys edwardsi in response to weevil infestation in cork oak Quer-cus variabilis
title_fullStr Seed-hoarding of Edward's long-tailed rats Leopoldamys edwardsi in response to weevil infestation in cork oak Quer-cus variabilis
title_full_unstemmed Seed-hoarding of Edward's long-tailed rats Leopoldamys edwardsi in response to weevil infestation in cork oak Quer-cus variabilis
title_short Seed-hoarding of Edward's long-tailed rats Leopoldamys edwardsi in response to weevil infestation in cork oak Quer-cus variabilis
title_sort seed hoarding of edward s long tailed rats leopoldamys edwardsi in response to weevil infestation in cork oak quer cus variabilis
topic Larvae survival
Seed discrimination
Seed-hoarding
Seed dispersal
Weevil infestation
url http://www.currentzoology.org/paperdetail.asp?id=11753
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