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Detailed whole‐body nutrient analysis identifies differences in feeding ecology between related fish species : the case of Orestias native Andean killifish in Lake Titicaca

Erick Zender Loayza Torrico (UGent) , Arturo Muñoz Saravia (UGent) , Marleen De Troch (UGent) , Wouter H. Hendriks and Geert Janssens (UGent)
(2023) JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION. 107(5). p.1302-1310
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Abstract
Body nutrient profiles in ecological studies allow for relating the nutritional status of consumers and their effects on the movement and retention of elements in ecosystems, as well as reflecting feeding conditions and habitat quality. This study compared the detailed whole-body nutrient composition (macronutrients, minerals, fatty acids and amino acids) of two omnivorous natives Orestias killifish from Lake Titicaca (Orestias agassizii and Orestias luteus, Valenciennes), the largest lake in the Andes, as an indirect tool to understand differences in their feeding ecology. Although both species are usually described as omnivorous fish, both have amphipods (Hyalella spp) as their main food source. Our results showed that both killifish had a comparable macronutrient composition, and the mineral concentrations of Mg, P and Ca (reflecting bony structures) differed between them. Many of the saturated fatty acids were significantly lower in O. luteus, and O. agassizii had higher concentrations of cis-vaccenic acid (18:1n11 (cis)), supporting the idea of a higher algal contribution to the diet of this fish. The lower histidine and higher taurine concentrations in O. agassizii compared with O. luteus (independent of body size) may reflect its ubiquitous behaviour and plasticity. This study shows how whole-body nutrient analysis can identify differences in feeding ecology and feeding behaviour between related species.
Keywords
Animal Science and Zoology, Food Animals, nutritional ecology, nutrient profile, fish ecology, fatty acids profile

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Citation

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MLA
Loayza Torrico, Erick Zender, et al. “Detailed Whole‐body Nutrient Analysis Identifies Differences in Feeding Ecology between Related Fish Species : The Case of Orestias Native Andean Killifish in Lake Titicaca.” JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION, vol. 107, no. 5, 2023, pp. 1302–10, doi:10.1111/jpn.13831.
APA
Loayza Torrico, E. Z., Muñoz Saravia, A., De Troch, M., Hendriks, W. H., & Janssens, G. (2023). Detailed whole‐body nutrient analysis identifies differences in feeding ecology between related fish species : the case of Orestias native Andean killifish in Lake Titicaca. JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION, 107(5), 1302–1310. https://doi.org/10.1111/jpn.13831
Chicago author-date
Loayza Torrico, Erick Zender, Arturo Muñoz Saravia, Marleen De Troch, Wouter H. Hendriks, and Geert Janssens. 2023. “Detailed Whole‐body Nutrient Analysis Identifies Differences in Feeding Ecology between Related Fish Species : The Case of Orestias Native Andean Killifish in Lake Titicaca.” JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION 107 (5): 1302–10. https://doi.org/10.1111/jpn.13831.
Chicago author-date (all authors)
Loayza Torrico, Erick Zender, Arturo Muñoz Saravia, Marleen De Troch, Wouter H. Hendriks, and Geert Janssens. 2023. “Detailed Whole‐body Nutrient Analysis Identifies Differences in Feeding Ecology between Related Fish Species : The Case of Orestias Native Andean Killifish in Lake Titicaca.” JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION 107 (5): 1302–1310. doi:10.1111/jpn.13831.
Vancouver
1.
Loayza Torrico EZ, Muñoz Saravia A, De Troch M, Hendriks WH, Janssens G. Detailed whole‐body nutrient analysis identifies differences in feeding ecology between related fish species : the case of Orestias native Andean killifish in Lake Titicaca. JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION. 2023;107(5):1302–10.
IEEE
[1]
E. Z. Loayza Torrico, A. Muñoz Saravia, M. De Troch, W. H. Hendriks, and G. Janssens, “Detailed whole‐body nutrient analysis identifies differences in feeding ecology between related fish species : the case of Orestias native Andean killifish in Lake Titicaca,” JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION, vol. 107, no. 5, pp. 1302–1310, 2023.
@article{01HAM5Z6KB72RVA828TRGVNX3H,
  abstract     = {{Body nutrient profiles in ecological studies allow for relating the nutritional status of consumers and their effects on the movement and retention of elements in ecosystems, as well as reflecting feeding conditions and habitat quality. This study compared the detailed whole-body nutrient composition (macronutrients, minerals, fatty acids and amino acids) of two omnivorous natives Orestias killifish from Lake Titicaca (Orestias agassizii and Orestias luteus, Valenciennes), the largest lake in the Andes, as an indirect tool to understand differences in their feeding ecology. Although both species are usually described as omnivorous fish, both have amphipods (Hyalella spp) as their main food source. Our results showed that both killifish had a comparable macronutrient composition, and the mineral concentrations of Mg, P and Ca (reflecting bony structures) differed between them. Many of the saturated fatty acids were significantly lower in O. luteus, and O. agassizii had higher concentrations of cis-vaccenic acid (18:1n11 (cis)), supporting the idea of a higher algal contribution to the diet of this fish. The lower histidine and higher taurine concentrations in O. agassizii compared with O. luteus (independent of body size) may reflect its ubiquitous behaviour and plasticity. This study shows how whole-body nutrient analysis can identify differences in feeding ecology and feeding behaviour between related species.}},
  author       = {{Loayza Torrico, Erick Zender and Muñoz Saravia, Arturo and De Troch, Marleen and Hendriks, Wouter H. and Janssens, Geert}},
  issn         = {{0931-2439}},
  journal      = {{JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION}},
  keywords     = {{Animal Science and Zoology,Food Animals,nutritional ecology,nutrient profile,fish ecology,fatty acids profile}},
  language     = {{eng}},
  number       = {{5}},
  pages        = {{1302--1310}},
  title        = {{Detailed whole‐body nutrient analysis identifies differences in feeding ecology between related fish species : the case of Orestias native Andean killifish in Lake Titicaca}},
  url          = {{http://doi.org/10.1111/jpn.13831}},
  volume       = {{107}},
  year         = {{2023}},
}
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