Skip to Main content Skip to Navigation
Journal articles

Seed nutrient content rather than size influences seed dispersal by scatterhoarding rodents in a West African montane forest

Abstract : Abstract Rodents can be important in seed dispersal through their scatterhoarding behaviour, yet, the seed traits that are most influential in seed removal by Afrotropical scatterhoarding rodents remains unclear. Here, we investigated the effect of seed size and nutrient content of four seed species on the scatterhoarding behaviour of rodents in an Afromontane forest, Ngel Nyaki forest, Nigeria. To do this we marked with thread-tags the seeds of Santiria trimera , Beilschmedia mannii , Carapa oreophila and Anthonotha noldeae and observed their fate. We predicted that (1) caching frequency would be higher for larger than smaller seed species; (2) caching frequency would be higher for nutrient-rich than nutrient-poor seeds; (3) larger seeds would be taken across farther distances; and (4) survival of cached seeds would be higher for nutrient-rich seeds. In contrast to studies elsewhere we found no difference in caching probabilities based on seed size, although nutrient-rich (high fat content) seeds had a higher probability of being predated than seeds with lower fat content. Larger and smaller seeds were dispersed over the same distances and nutrient-poor (high fibre content) seeds survived longer in seed caches. Overall, our findings suggest that large, nutrient-rich seed species are less likely to be dispersed by rodents.
Document type :
Journal articles
Complete list of metadata

https://hal-mnhn.archives-ouvertes.fr/mnhn-03270476
Contributor : Pierre-Michel Forget Connect in order to contact the contributor
Submitted on : Thursday, June 24, 2021 - 6:26:06 PM
Last modification on : Friday, June 25, 2021 - 3:23:44 AM

Identifiers

Collections

Citation

Biplang Yadok, Pierre-Michel Forget, Daniel Gerhard, Babale Aliyu, Hazel Chapman. Seed nutrient content rather than size influences seed dispersal by scatterhoarding rodents in a West African montane forest. Journal of Tropical Ecology, Cambridge University Press (CUP), 2020, 36 (4), pp.174-181. ⟨10.1017/S0266467420000127⟩. ⟨mnhn-03270476⟩

Share

Metrics

Record views

20