The British Herpetological Society

The Herpetological Journal is the Society's prestigious quarterly scientific journal. Articles are listed in Biological Abstracts, Current Awareness in Biological Sciences,Current Contents, Science Citation Index, and Zoological Record.

The 2017/18  impact factor of the Herpetological Journal is 1.268

  pdfBHS Ethics Policy

Download Access:

  • The latest 20 issues can be downloaded when logged in with a Herpetological Journal subscription membership.
  • Individual articles can be purchased for download.
  • Older issues and occasional Open Access articles are available for public download

pdf 04. Food partitioning between two syntopic ranid frogs, Rana nigromaculata and R rugosa

173 downloads

Open Access

pp.109-115

Authors: Toshiaki Hirai And Masafumi Matsui

AbstractRana nigromaculata and R. rugosa consumed different food resources when they coexisted in Japanese rice fields. Rana nigromaculata consumed prey from many taxa including a small proportion of ants (16% in number of the total prey items), while R. rugosa ate mainly ants (56%). However, presence of the same terrestrial prey types in the bulk of their diets suggests that the frogs forage on the ground syntopically, and do not partition their feeding sites. Moreover, the comparatively wider mouth of R. rugosa (relative to similiar sized R. nigromaculata), suggests that R. rugosa does not eat more ants because of morphological constraints. This dissimilar pattern of food resource utilization seems to have resulted from selection of different prey, as indicated by the stronger avoidance of ants by R. nigromaculata compared to R. rugosa. This food partitioning may be facilitating their coexistence in rice fields.

Keywords: Rana nigromaculata, R. rugosa, food partitioning, prey selection, syntopic foraging

Submissions:

For further information and submission guidelines please see our Journal Instructions to Authors

 

 

NOTE: as of January 2017, all new editions of the HJ are ONLY available online via the BHS website. The BHS no longer has a commercial hosting agreement with Ingenta  -  although editions prior to end 2016 remain accessible on Ingenta .  Those editions are of course also accessible on the BHS website for subscribers with an active and valid membership.  Should you experience any difficulty accessing HJ editions via the website or have any queries in this regard, please contact