Effect of the common palm civet’s gut passage on seed germination of fleshy fruits in Pachmarhi Wildlife Sanctuary, Central India
Data files
Aug 21, 2023 version files 46.66 KB
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1_Seed_Morphological_Characteristics.csv
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2_Germspeed.csv
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README.md
Abstract
Frugivorous carnivores like civets consume fruits of many species and play an important role in their seed dispersal by virtue of depositing their scats farther away from the parent tree. This study was conducted to understand the role of the common palm civet in affecting the seed germination rate of three plant species (i.e., Syzygium cumini, Phoenix sylvestris, and Ficus racemosa) in a tropical moist deciduous forest. We collected scats of common palm civets in Pachmarhi Wildlife Sanctuary, Central India, and monitored the germination rate of these species for 90 days. Further, to understand the patters of seed selection (if there are any), for seeds of a specific size, we compared the length, width, and mass of the civet-ingested seeds with those of the control seeds. We had to discard the analyses on F. racemosa as none of its seeds in any treatment group germinated even after 50 days. Our results show a differential impact of gut passage: civet-ingested P. sylvestris seeds experienced a higher germination percentage compared to the control seeds, whilst gut passage did not alter the seed germination of S. cumini. However, seed germination speed (proportion of seeds germinated per day) for both species, P. sylvestris and S. cumini, was faster for civet-ingested seeds compared to their respective controls. Our findings also show that civets preferred seeds that were lesser in length and width and weighed lesser in the case of P. sylvestris, however, no such statistically significant difference was found for seed selection in the case of S. cumini. Thus, our study shows that civets act as a legitimate seed disperser of plant species and exert a differential impact on altering the germination rate.
Methods
The scat samples of civets were collected at Pachmarhi Wildlife Sanctuary, Central India. All the seeds were retrieved by washing the scat samples in running water. For control samples, fruits were manually harvested from the plant species. For seed morphological characteristics, length, width and mass of all the seeds, civet-ingested and control, were quantified. For seed viability, floating test was carried out. Then, civet ingested as well as control seeds for both the studied plant species, i.e., date palm and java plum, were sown to check the speed of germination as well as germination rate.