Fate of native and introduced seeds consumed by captive white-lipped and collared peccaries (Tayassu pecari, Link 1795 and Pecari tajacu, Linnaeus 1758) in the Atlantic rainforest, Brazil

Brazilian Journal of Biology

L. Lazure²  M. Bachand²  C. Ansseau²  Js. Almeida-cortez¹ 

[1] ,Université de Sherbrooke Département de Biologie Sherbrooke,Canada

关键词: seed dispersal;    seed predation;    peccaries;    Tayassuidae;    Atlantic rainforest;    dispersão de sementes;    predação de sementes;    porcos-do-mato;    Tayassuidae;    Mata Atlântica;   

DOI  :  10.1590/S1519-69842010000100008

来源: SciELO

【 摘 要 】

We studied the role of white-lipped and collared peccaries (Tayassu pecari and Pecari tajacu) as seed predators and dispersers in the Atlantic rainforest of Brazil. The Atlantic rainforest ecosystem is highly threatened and has experienced dramatic declines in its populations of large mammals. Local extinctions can disrupt essential plant-animal interactions such as seed dispersion and seed predation. We tracked seeds from time of consumption to germination to assess the direct impact peccaries have on seed survival. We offered fruits of 20 species found in the Atlantic rainforest to the peccaries. Seeds were categorised as intact, scarified, ingested or defecated, and germination tests were performed. The overall impact by both peccary species was similar. Seeds were sometime scarified by mastication, always with fatal consequences. Most seeds that were consumed were destroyed during ingestion and digestion. Only small seeds (<10 mm) were found in the feces and germination tests suggest a positive effect from the passage through the guts. Peccaries clearly have a double role as both seed predators and as small seeds dispersers, which is a specialised role within the granivore/frugivore community of the Atlantic rainforest.

【 授权许可】

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