Comparison of diet and prey selectivity of the Pyrenean desman and the Eurasian water shrew using next-generation sequencing methods
In this study, the interactions between two semi-aquatic mammals, the endangered Pyrenean desman Galemys pyrenaicus and the Eurasian water shrew Neomys fodiens, were investigated through the analysis of their summer diet using next-generation sequencing methods, combined with analyses of prey selectivity and trophic overlap. The diet of these predators was highly diverse including 194 and 205 genera for G. pyrenaicus and N. fodiens respectively. Overall, both species exhibited rather non-selective foraging strategies as the most frequently consumed invertebrates were also the most frequent and abundant in the streams. This supported a generalist foraging behaviour for G. pyrenaicus and N. fodiens in the study area. The Pianka index (0.4) indicated a significant but moderate dietary overlap as G. pyrenaicus mostly relied on prey with aquatic stages whereas prey of N. fodiens were mainly terrestrial. Moreover, no difference in G. pyrenaicus prey consumption was found in presence or absence of N. fodiens. A differential use of trophic resources through mechanisms such as plastic feeding behaviour or differences in foraging micro-habitat are likely to facilitate the coexistence between these two mammal species.
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Subjects: | L51 - Physiologie animale - Nutrition, L20 - Écologie animale, musaraigne, mammifère, sélection de proies, régime alimentaire, comportement alimentaire, http://aims.fao.org/aos/agrovoc/c_7048, http://aims.fao.org/aos/agrovoc/c_4560, http://aims.fao.org/aos/agrovoc/c_215331f7, http://aims.fao.org/aos/agrovoc/c_2261, http://aims.fao.org/aos/agrovoc/c_2840, |
Online Access: | http://agritrop.cirad.fr/587266/ http://agritrop.cirad.fr/587266/1/1-s2.0-S1616504716302002-main.pdf |
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dig-cirad-fr-5872662024-01-29T05:42:51Z http://agritrop.cirad.fr/587266/ http://agritrop.cirad.fr/587266/ Comparison of diet and prey selectivity of the Pyrenean desman and the Eurasian water shrew using next-generation sequencing methods. Biffi Marjorie, Laffaille Pascal, Jabiol Jérémy, André Adrien, Gillet François, Lamothe Sylvain, Michaux Johan, Buisson Laëtitia. 2017. Mammalian Biology, 87 : 176-184.https://doi.org/10.1016/j.mambio.2017.09.001 <https://doi.org/10.1016/j.mambio.2017.09.001> Comparison of diet and prey selectivity of the Pyrenean desman and the Eurasian water shrew using next-generation sequencing methods Biffi, Marjorie Laffaille, Pascal Jabiol, Jérémy André, Adrien Gillet, François Lamothe, Sylvain Michaux, Johan Buisson, Laëtitia eng 2017 Mammalian Biology L51 - Physiologie animale - Nutrition L20 - Écologie animale musaraigne mammifère sélection de proies régime alimentaire comportement alimentaire http://aims.fao.org/aos/agrovoc/c_7048 http://aims.fao.org/aos/agrovoc/c_4560 http://aims.fao.org/aos/agrovoc/c_215331f7 http://aims.fao.org/aos/agrovoc/c_2261 http://aims.fao.org/aos/agrovoc/c_2840 In this study, the interactions between two semi-aquatic mammals, the endangered Pyrenean desman Galemys pyrenaicus and the Eurasian water shrew Neomys fodiens, were investigated through the analysis of their summer diet using next-generation sequencing methods, combined with analyses of prey selectivity and trophic overlap. The diet of these predators was highly diverse including 194 and 205 genera for G. pyrenaicus and N. fodiens respectively. Overall, both species exhibited rather non-selective foraging strategies as the most frequently consumed invertebrates were also the most frequent and abundant in the streams. This supported a generalist foraging behaviour for G. pyrenaicus and N. fodiens in the study area. The Pianka index (0.4) indicated a significant but moderate dietary overlap as G. pyrenaicus mostly relied on prey with aquatic stages whereas prey of N. fodiens were mainly terrestrial. Moreover, no difference in G. pyrenaicus prey consumption was found in presence or absence of N. fodiens. A differential use of trophic resources through mechanisms such as plastic feeding behaviour or differences in foraging micro-habitat are likely to facilitate the coexistence between these two mammal species. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/587266/1/1-s2.0-S1616504716302002-main.pdf text Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1016/j.mambio.2017.09.001 10.1016/j.mambio.2017.09.001 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.mambio.2017.09.001 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1016/j.mambio.2017.09.001 info:eu-repo/grantAgreement/EC/Life/LIFE13 NAT-FR-000092//(EU) Conservation of the French populations of Galemys pyrenaicus and its populations on the French Pyrénées/LIFE+ DESMAN |
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L51 - Physiologie animale - Nutrition L20 - Écologie animale musaraigne mammifère sélection de proies régime alimentaire comportement alimentaire http://aims.fao.org/aos/agrovoc/c_7048 http://aims.fao.org/aos/agrovoc/c_4560 http://aims.fao.org/aos/agrovoc/c_215331f7 http://aims.fao.org/aos/agrovoc/c_2261 http://aims.fao.org/aos/agrovoc/c_2840 L51 - Physiologie animale - Nutrition L20 - Écologie animale musaraigne mammifère sélection de proies régime alimentaire comportement alimentaire http://aims.fao.org/aos/agrovoc/c_7048 http://aims.fao.org/aos/agrovoc/c_4560 http://aims.fao.org/aos/agrovoc/c_215331f7 http://aims.fao.org/aos/agrovoc/c_2261 http://aims.fao.org/aos/agrovoc/c_2840 |
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L51 - Physiologie animale - Nutrition L20 - Écologie animale musaraigne mammifère sélection de proies régime alimentaire comportement alimentaire http://aims.fao.org/aos/agrovoc/c_7048 http://aims.fao.org/aos/agrovoc/c_4560 http://aims.fao.org/aos/agrovoc/c_215331f7 http://aims.fao.org/aos/agrovoc/c_2261 http://aims.fao.org/aos/agrovoc/c_2840 L51 - Physiologie animale - Nutrition L20 - Écologie animale musaraigne mammifère sélection de proies régime alimentaire comportement alimentaire http://aims.fao.org/aos/agrovoc/c_7048 http://aims.fao.org/aos/agrovoc/c_4560 http://aims.fao.org/aos/agrovoc/c_215331f7 http://aims.fao.org/aos/agrovoc/c_2261 http://aims.fao.org/aos/agrovoc/c_2840 Biffi, Marjorie Laffaille, Pascal Jabiol, Jérémy André, Adrien Gillet, François Lamothe, Sylvain Michaux, Johan Buisson, Laëtitia Comparison of diet and prey selectivity of the Pyrenean desman and the Eurasian water shrew using next-generation sequencing methods |
description |
In this study, the interactions between two semi-aquatic mammals, the endangered Pyrenean desman Galemys pyrenaicus and the Eurasian water shrew Neomys fodiens, were investigated through the analysis of their summer diet using next-generation sequencing methods, combined with analyses of prey selectivity and trophic overlap. The diet of these predators was highly diverse including 194 and 205 genera for G. pyrenaicus and N. fodiens respectively. Overall, both species exhibited rather non-selective foraging strategies as the most frequently consumed invertebrates were also the most frequent and abundant in the streams. This supported a generalist foraging behaviour for G. pyrenaicus and N. fodiens in the study area. The Pianka index (0.4) indicated a significant but moderate dietary overlap as G. pyrenaicus mostly relied on prey with aquatic stages whereas prey of N. fodiens were mainly terrestrial. Moreover, no difference in G. pyrenaicus prey consumption was found in presence or absence of N. fodiens. A differential use of trophic resources through mechanisms such as plastic feeding behaviour or differences in foraging micro-habitat are likely to facilitate the coexistence between these two mammal species. |
format |
article |
topic_facet |
L51 - Physiologie animale - Nutrition L20 - Écologie animale musaraigne mammifère sélection de proies régime alimentaire comportement alimentaire http://aims.fao.org/aos/agrovoc/c_7048 http://aims.fao.org/aos/agrovoc/c_4560 http://aims.fao.org/aos/agrovoc/c_215331f7 http://aims.fao.org/aos/agrovoc/c_2261 http://aims.fao.org/aos/agrovoc/c_2840 |
author |
Biffi, Marjorie Laffaille, Pascal Jabiol, Jérémy André, Adrien Gillet, François Lamothe, Sylvain Michaux, Johan Buisson, Laëtitia |
author_facet |
Biffi, Marjorie Laffaille, Pascal Jabiol, Jérémy André, Adrien Gillet, François Lamothe, Sylvain Michaux, Johan Buisson, Laëtitia |
author_sort |
Biffi, Marjorie |
title |
Comparison of diet and prey selectivity of the Pyrenean desman and the Eurasian water shrew using next-generation sequencing methods |
title_short |
Comparison of diet and prey selectivity of the Pyrenean desman and the Eurasian water shrew using next-generation sequencing methods |
title_full |
Comparison of diet and prey selectivity of the Pyrenean desman and the Eurasian water shrew using next-generation sequencing methods |
title_fullStr |
Comparison of diet and prey selectivity of the Pyrenean desman and the Eurasian water shrew using next-generation sequencing methods |
title_full_unstemmed |
Comparison of diet and prey selectivity of the Pyrenean desman and the Eurasian water shrew using next-generation sequencing methods |
title_sort |
comparison of diet and prey selectivity of the pyrenean desman and the eurasian water shrew using next-generation sequencing methods |
url |
http://agritrop.cirad.fr/587266/ http://agritrop.cirad.fr/587266/1/1-s2.0-S1616504716302002-main.pdf |
work_keys_str_mv |
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