Advanced search
1 file | 675.43 KB Add to list

The uneven weight distribution between predators and prey : comparing gut fill between terrestrial herbivores and carnivores

Author
Organization
Abstract
The general observation that secondary consumers ingest highly digestible food and have simple short guts and small abdominal cavities intuitively results in the assumption that mammalian carnivores carry less digesta in their gut compared to herbivores. Due to logistic constraints, this assumption has not been tested quantitatively so far. In this contribution, we estimated the dry matter gut contents (DMC) for 25 species of the order Carnivora (including two strictly herbivorous ones, the giant and the red panda) using the physical 'Occupancy Principle', based on a literature data collection on dry matter intake (DMI), apparent dry matter digestibility (aD DM) and retention time (RT), and compared the results to an existing collection for herbivores. Scaling exponents with body mass (BM) for both carnivores and herbivores were in the same range with DMI similar to BM0.75; aD DM similar to BM0; RT similar to BM0.11 and DMC similar to BM0.88. The trophic level (carnivore vs herbivore) significantly affected all digestive physiology parameters except for RT. Numerically, the carnivore DMI level reached 77%, the RT 32% and DMC only 29% of the corresponding herbivore values, whereas the herbivore aD DM only reached 82% of that of carnivores. Thus, we quantitatively show that carnivores carry less inert mass or gut content compared to herbivores, which putatively benefits them in predator-prey interactions and might have contributed to the evolution towards unguligradism in herbivores. As expected, the two panda species appeared as outliers in the dataset with low aD DM and RT for a herbivore but extremely high DMI values, resulting in DMC in the lower part of the herbivore range. Whereas the difference in DMI and DMC scaling in herbivores might allow larger herbivores to compensate for lower diet quality by ingesting more, this difference may allow larger carnivores not to go for less digestible prey parts, but mainly to increase meal intervals, i.e. not having to hunt on a daily basis.
Keywords
Biochemistry, Physiology, Molecular Biology, Carnivore, Herbivore, Body Size, Gut Fill/content, Predator, Prey, Retention Time, Gastrointestinal Transit Times, Different-sized Particles, Motility Capsule System, Dietary Fiber, Metabolizable Energy, Digesta Retention, Nutrient Intake, Body-mass, Nutritional Ecology, Feed Consumption

Downloads

  • 1-s2.0-S1095643320300350-main.pdf
    • full text (Published version)
    • |
    • open access
    • |
    • PDF
    • |
    • 675.43 KB

Citation

Please use this url to cite or link to this publication:

MLA
De Cuyper, Annelies, et al. “The Uneven Weight Distribution between Predators and Prey : Comparing Gut Fill between Terrestrial Herbivores and Carnivores.” COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY, vol. 243, 2020, doi:10.1016/j.cbpa.2020.110683.
APA
De Cuyper, A., Meloro, C., Abraham, A. J., Müller, D. W. H., Codron, D., Janssens, G. P. J., & Clauss, M. (2020). The uneven weight distribution between predators and prey : comparing gut fill between terrestrial herbivores and carnivores. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY, 243. https://doi.org/10.1016/j.cbpa.2020.110683
Chicago author-date
De Cuyper, Annelies, Carlo Meloro, Andrew J. Abraham, Dennis W.H. Müller, Daryl Codron, Geert P.J. Janssens, and Marcus Clauss. 2020. “The Uneven Weight Distribution between Predators and Prey : Comparing Gut Fill between Terrestrial Herbivores and Carnivores.” COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY 243. https://doi.org/10.1016/j.cbpa.2020.110683.
Chicago author-date (all authors)
De Cuyper, Annelies, Carlo Meloro, Andrew J. Abraham, Dennis W.H. Müller, Daryl Codron, Geert P.J. Janssens, and Marcus Clauss. 2020. “The Uneven Weight Distribution between Predators and Prey : Comparing Gut Fill between Terrestrial Herbivores and Carnivores.” COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY 243. doi:10.1016/j.cbpa.2020.110683.
Vancouver
1.
De Cuyper A, Meloro C, Abraham AJ, Müller DWH, Codron D, Janssens GPJ, et al. The uneven weight distribution between predators and prey : comparing gut fill between terrestrial herbivores and carnivores. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY. 2020;243.
IEEE
[1]
A. De Cuyper et al., “The uneven weight distribution between predators and prey : comparing gut fill between terrestrial herbivores and carnivores,” COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY, vol. 243, 2020.
@article{8656684,
  abstract     = {The general observation that secondary consumers ingest highly digestible food and have simple short guts and small abdominal cavities intuitively results in the assumption that mammalian carnivores carry less digesta in their gut compared to herbivores. Due to logistic constraints, this assumption has not been tested quantitatively so far. In this contribution, we estimated the dry matter gut contents (DMC) for 25 species of the order Carnivora (including two strictly herbivorous ones, the giant and the red panda) using the physical 'Occupancy Principle', based on a literature data collection on dry matter intake (DMI), apparent dry matter digestibility (aD DM) and retention time (RT), and compared the results to an existing collection for herbivores. Scaling exponents with body mass (BM) for both carnivores and herbivores were in the same range with DMI similar to BM0.75; aD DM similar to BM0; RT similar to BM0.11 and DMC similar to BM0.88. The trophic level (carnivore vs herbivore) significantly affected all digestive physiology parameters except for RT. Numerically, the carnivore DMI level reached 77%, the RT 32% and DMC only 29% of the corresponding herbivore values, whereas the herbivore aD DM only reached 82% of that of carnivores. Thus, we quantitatively show that carnivores carry less inert mass or gut content compared to herbivores, which putatively benefits them in predator-prey interactions and might have contributed to the evolution towards unguligradism in herbivores. As expected, the two panda species appeared as outliers in the dataset with low aD DM and RT for a herbivore but extremely high DMI values, resulting in DMC in the lower part of the herbivore range. Whereas the difference in DMI and DMC scaling in herbivores might allow larger herbivores to compensate for lower diet quality by ingesting more, this difference may allow larger carnivores not to go for less digestible prey parts, but mainly to increase meal intervals, i.e. not having to hunt on a daily basis.},
  articleno    = {110683},
  author       = {De Cuyper, Annelies and Meloro, Carlo and Abraham, Andrew J. and Müller, Dennis W.H. and Codron, Daryl and Janssens, Geert P.J. and Clauss, Marcus},
  issn         = {1095-6433},
  journal      = {COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY},
  keywords     = {Biochemistry,Physiology,Molecular Biology,Carnivore,Herbivore,Body Size,Gut Fill/content,Predator,Prey,Retention Time,Gastrointestinal Transit Times,Different-sized Particles,Motility Capsule System,Dietary Fiber,Metabolizable Energy,Digesta Retention,Nutrient Intake,Body-mass,Nutritional Ecology,Feed Consumption},
  language     = {eng},
  pages        = {9},
  title        = {The uneven weight distribution between predators and prey : comparing gut fill between terrestrial herbivores and carnivores},
  url          = {http://dx.doi.org/10.1016/j.cbpa.2020.110683},
  volume       = {243},
  year         = {2020},
}

Altmetric
View in Altmetric
Web of Science
Times cited: