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<datestamp>2018-01-11</datestamp>
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<title lang=en>Contrasting feeding habits of post-larval and adult Astyanax cavefish</title>
<creator>Espinasa, Luis</creator>
<creator>Bonaroti, Natalie</creator>
<creator>Wong, Jae</creator>
<creator>Pottin, Karen</creator>
<creator>Quéinnec, Eric</creator>
<creator>Rétaux, Sylvie</creator>
<contributor>School of Science, Marist College ; Marist College</contributor>
<contributor>Evolution Paris Seine ; Université des Antilles et de la Guyane (UAG) - Université Pierre et Marie Curie - Paris 6 (UPMC) - Université Nice Sophia Antipolis (UNS) ; Université Côte d'Azur (UCA) - Université Côte d'Azur (UCA) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Institut des Neurosciences de Paris-Saclay (Neuro-PSI) ; Université Paris-Sud - Paris 11 (UP11) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<description>International audience</description>
<source>Subterranean Biology</source>
<identifier>hal-01432027</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01432027</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01432027</source>
<source>Subterranean Biology, 2017, 21, pp.1-17. 〈10.3897/subtbiol.21.11046〉</source>
<identifier>DOI : 10.3897/subtbiol.21.11046</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.3897/subtbiol.21.11046</relation>
<language>en</language>
<subject lang=en>Predation</subject>
<subject lang=en> gut contents</subject>
<subject lang=en> troglomorphy</subject>
<subject lang=en> VAB</subject>
<subject lang=en> neuromast</subject>
<subject>[SDV.NEU.NB] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology</subject>
<subject>[SDV.NEU.PC] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Psychology and behavior</subject>
<subject>[SDV.NEU.SC] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Cognitive Sciences</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>The subterranean environment is often described as “extreme” and food poor. Laboratory experiments have shown that blind Mexican tetra Astyanax mexicanus (De Filippi, 1853) cavefish are better at finding food in the dark than surface fish. Several morphological and behavioural attributes that could foster this obvious adaptive response to cave environments have been described. Nonetheless, it is currently unknown what young cavefish actually eat in their natural cave environment. Our results from the Pachón cave in México during the dry and rainy season show that fry are efficient predators in their natural cave environment. Their primary food item is aquatic crustaceans. The guts of post-larval, pre-juvenile stage individuals (n=9) contained an average of 17.9 water fleas (Cladocera), copepods, ostracods, and isopods. Thus, the fry in this cave are well-fed. The Pachón cave environment does not appear to be “food poor” for juvenile cavefish. Food regimes change between post-larval and adult stages to become more dependent on partially decomposed material, guano, or detritus from the mud. We discuss the data with regards to our current developmental and genetic understanding of cavefish morphological and behavioural evolution, particularly regarding its enhanced Vibration Attraction Behaviour (VAB).</description>
<date>2017-01-06</date>
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