Seed removal by scatter-hoarding rodents: The effects of tannin and nutrient concentration

Wang, Bo; Yang, Xiaolan

doi:10.1016/j.beproc.2015.01.012

Cited by 17 publications

(8 citation statements)

References 31 publications

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“…Recent innovative work with artificial fruits has begun to tease apart the disparate roles of size, nutrients and secondary compounds in seed selection by caching rodents. Wang and Yang (2015) manipulated seed size, tannin, fat, protein and starch content in artificial seeds and showed how all these factors affected rodent foraging. Rodents preferentially removed seeds with less tannin; increasing fats, and to a lesser degree, proteins, reduced this negative effect.…”

Section: Intrinsic Variation: Plant Traitsmentioning

confidence: 99%

Intrinsic and extrinsic drivers of intraspecific variation in seed dispersal are diverse and pervasive

et al. 2019

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There is growing realization that intraspecific variation in seed dispersal can have important ecological and evolutionary consequences. However, we do not have a good understanding of the drivers or causes of intraspecific variation in dispersal, how strong an effect these drivers have, and how widespread they are across dispersal modes. As a first step to developing a better understanding, we present a broad, but not exhaustive, review of what is known about the drivers of intraspecific variation in seed dispersal, and what remains uncertain. We start by decomposing ‘drivers of intraspecific variation in seed dispersal’ into intrinsic drivers (i.e. variation in traits of individual plants) and extrinsic drivers (i.e. variation in ecological context). For intrinsic traits, we further decompose intraspecific variation into variation among individuals and variation of trait values within individuals. We then review our understanding of the major intrinsic and extrinsic drivers of intraspecific variation in seed dispersal, with an emphasis on variation among individuals. Crop size is the best-supported and best-understood intrinsic driver of variation across dispersal modes; overall, more seeds are dispersed as more seeds are produced, even in cases where per seed dispersal rates decline. Fruit/seed size is the second most widely studied intrinsic driver, and is also relevant to a broad range of seed dispersal modes. Remaining intrinsic drivers are poorly understood, and range from effects that are probably widespread, such as plant height, to drivers that are most likely sporadic, such as fruit or seed colour polymorphism. Primary extrinsic drivers of variation in seed dispersal include local environmental conditions and habitat structure. Finally, we present a selection of outstanding questions as a starting point to advance our understanding of individual variation in seed dispersal.

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Section: Intrinsic Variation: Plant Traitsmentioning

confidence: 99%

Intrinsic and extrinsic drivers of intraspecific variation in seed dispersal are diverse and pervasive

et al. 2019

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“…Las H por su parte, visitaron con mayor frecuencia los comederos de B. alicastrum donde no se realizó un acarreo sino que consumieron inmediatamente los frutos. Lo anterior probablemente se debió a que se trató de un alimento poco redituable y de menor tamaño, ya que se ha observado en otros roedores que solo acarrean y almacenan aquellos alimentos, principalmente semillas, que representan un mayor aporte energético (Wang y Yang, 2015).…”

Section: Discussionunclassified

Conducta alimentaria del tepezcuintle (Cuniculus paca) en dos sitios con distinto uso de suelo en la selva Lacandona, Chiapas, México

et al. 2020

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“…Usually, rodents eat high quality seeds after dispersal and low quality seeds in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 situ (Rusch et al 2013). A lot of studies have shown that seeds with larger size or higher energy content are more likely to be removed rather than eaten in situ (Rusch et al 2013;Wang & Yang 2015). During the 3 years, rodents ate a lot more sound seeds than infested seeds after dispersal.…”

Section: Discussionmentioning

confidence: 99%

Effects of insect infestation on rodent‐mediated dispersal of Quercus aliena: results from field and enclosure experiments

Zhang

Chen

Steele

et al. 2019

Integrative Zoology

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Rodents influence plant establishment and regeneration by functioning as both seed predators and dispersers. However, these rodent-plant interactions can vary significantly due to various environmental conditions and the activity of other insect seed-predators. Here, we use a combination of both field and enclosure (i.e, individual cage and semi-natural enclosure) experiments, to determine whether rodents can distinguish sound seeds from those infested with insects. We also demonstrate how such responses to insects are influenced by food abundance and other environmental factors. We presented rodents with two kinds of Quercus aliena seeds (sound and insect-infested seeds) in a subtropical forest in Qinling Mountains, central China, from September to November of 2011 to 2013. The result showed that rodents prefer to hoarded and ate sound seeds than infested seeds in the field and semi-natural enclosure, while they prefer to ate infested seeds than sound seeds in the individual cages. In addition, both hoarding and eating decisions were influenced by food abundance. Rodents hoarded more sound seeds in years of high food abundance while they consume more acorns in years of food shortage. Compared with field results, rodents reduced scatter hoarding behavior in semi-natural enclosures and ate more insect-infested seeds in smaller individual cages. These results further confirm that rodents distinguish infested seeds form non-infested seeds but demonstrate that this behavior varies with conditions (environment and food abundance). We suggest that such interactions will influence the dispersal and natural regeneration of seeds as well as predation rates on insect larvae. This article is protected by copyright. All rights reserved.

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Seed removal by scatter-hoarding rodents: The effects of tannin and nutrient concentration

Cited by 17 publications

References 31 publications

Intrinsic and extrinsic drivers of intraspecific variation in seed dispersal are diverse and pervasive

Intrinsic and extrinsic drivers of intraspecific variation in seed dispersal are diverse and pervasive

Conducta alimentaria del tepezcuintle (Cuniculus paca) en dos sitios con distinto uso de suelo en la selva Lacandona, Chiapas, México

Effects of insect infestation on rodent‐mediated dispersal of Quercus aliena: results from field and enclosure experiments

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