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Secondary seed dispersal by dung beetles in a Colombian rain forest: effects of dung type and defecation pattern on seed fate

  • Carolina Santos-Heredia (a1), Ellen Andresen (a2) and Diego A. Zárate (a1)
Abstract
Abstract:

In rain forests the fate of seeds defecated by mammals is often affected by dung beetles, but these effects can vary with mammal species. In a Colombian forest, differences in Scarabaeinae assemblages attracted to spider monkey (Ateles hybridus) and howler monkey (Alouatta seniculus) defecations were assessed. In total, 791 beetles of 35 species were captured. Mean number of individuals was similar for both dung types; mean number of species was higher for Alouatta traps. The effects of dung type (Alouatta vs. Ateles) and defecation pattern (clumped vs. scattered) on the fate of 220 Rollinia edulis (Annonaceae) seeds were determined. Burial by beetles occurred for 61% of the seeds (mean depth 2.6 cm). Seeds in Alouatta dung and in clumped defecations had higher burial rates. Horizontal movement (mean 11 cm) occurred for 80% of the seeds; no significant effects of experimental factors were detected. Survival was higher for buried vs. surface seeds. In a separate experiment, no differences were detected between dung types in the proportion of seeds buried by beetles. Changes in dung texture might have been responsible for the contrasting results. When assessing the effectiveness of an endozoochorous plant–mammal interaction, secondary dispersal by dung beetles should be addressed too.

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Corresponding author
1Corresponding author. Email: andresen@oikos.unam.mx, eandresens@gmail.com
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E. ANDRESEN 1999. Seed dispersal by monkeys and the fate of dispersed seeds in a Peruvian rainforest. Biotropica 31:145158.

E. ANDRESEN 2002a. Primary seed dispersal by red howler monkeys and the effect of defecation pattern on the fate of dispersed seeds. Biotropica 34:261272.

E. ANDRESEN 2002b. Dung beetles in a Central Amazonian rainforest and their ecological role as secondary seed dispersers. Ecological Entomology 27:257270.

E. ANDRESEN 2008. Short-term temporal variability in the abundance of tropical dung beetles. Insect Conservation and Diversity 1:120124.

E. ANDRESEN & D. J. LEVEY 2004. Effects of dung and seed size on secondary dispersal, seed predation, and seedling establishment of rain forest trees. Oecologia 139:145154.

B. D'HONDT , B. BOSSUYT , M. HOFFMANN & D. BONTE 2007. Dung beetles as secondary seed dispersers in a temperate grassland. Basic and Applied Ecology 9:542549.

F. FEER 1999. Effects of dung beetles (Scarabaeidae) on seeds dispersed by howler monkeys (Alouatta seniculus) in the French Guianan rain forest. Journal of Tropical Ecology 15:129142.

N. J. GOTELLI & R. K. COLWELL 2001. Quantifying biodiversity: procedures and pitfalls in the measurement and comparison of species richness. Ecology Letters 4:379391.

D. H. JANZEN 1982. Removal of seeds from horse dung by tropical rodents: influence of habitat and amount of dung. Ecology 63:18871900.

T. LARSEN & A. FORSYTH 2005. Trap spacing and transect design for dung beetle biodiversity studies. Biotropica 37:322325.

T. LARSEN , N. M. WILLIAMS & C. KREMEN 2005. Extinction order and altered community structure rapidly disrupt ecosystem functioning. Ecology Letters 8:538547.

E. NICHOLS , S. SPECTOR , J. LOUZADA , T. LARSEN , S. AMEZQUITA , M. E. FAVILA & THE SCARABAEINAE RESEARCH NETWORK. 2008. Ecological functions and ecosystem services provided by Scarabaeinae dung beetles. Biological Conservation 141:14611474.

G. PONCE-SANTIZO , E. ANDRESEN , E. CANO & A. CUARÓN 2006. Dispersión primaria de semillas por primates y dispersión secundaria por escarabajos coprófagos en Tikal, Guatemala. Biotropica 38:390397.

R. RÍOS & L. F. PACHECO 2006. The effect of dung and dispersal on postdispersal seed predation of Attalea phalerata (Arecaceae) by bruchid beetles. Biotropica 38:778781.

S. E. RUSSO , S. PORTNOY & C. K. AUGSPURGER 2006. Incorporating animal behavior into seed dispersal models: implications for seed shadows. Ecology 87:31603174.

E. M. SLADE , D. J. MANN , J. F. VILLANUEVA & O. T. LEWIS 2007. Experimental evidence for the effects of dung beetle functional group richness and composition on ecosystem function in a tropical forest. Journal of Animal Ecology 76:10941104.

S. B. VANDER WALL & W. S. LONGLAND 2004. Diplochory: are two seed dispersers better than one? Trends in Ecology and Evolution 19:155161.

J. R. VERDÚ , C. NUMA , J. M. LOBO , M. MARTÍNEZ-AZORÍN & E. GALANTE 2009. Interactions between rabbits and dung beetles influence the establishment of Erodium praecox. Journal of Arid Environments 73:713718.

K. VULINEC 2002. Dung beetle communities and seed dispersal in primary forest and disturbed land in Amazonia. Biotropica 34:297309.

D. T. WICKLOW , R. KUMAR & J. E. LLOYD 1984. Germination of Blue Grama seeds buried by dung beetles (Coleoptera: Scarabaeidae). Environmental Entomology 13:878881.

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Journal of Tropical Ecology
  • ISSN: 0266-4674
  • EISSN: 1469-7831
  • URL: /core/journals/journal-of-tropical-ecology
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