Use of electrosense in the feeding behavior of sturgeons.
Identifieur interne : 000276 ( PubMed/Checkpoint ); précédent : 000275; suivant : 000277Use of electrosense in the feeding behavior of sturgeons.
Auteurs : Xuguang Zhang [République populaire de Chine] ; Jiakun Song ; Chunxin Fan ; Hongyi Guo ; Xiaojie Wang ; Horst BleckmannSource :
- Integrative zoology [ 1749-4877 ] ; 2012.
English descriptors
- KwdEn :
- MESH :
- physiology : Electrophysiological Phenomena, Fishes, Predatory Behavior, Sensory Receptor Cells.
- Animals.
Abstract
The electro-receptive lateral line system appeared early in the evolutionary history of fish. Sturgeons, members of the primitive Chondrostei group, are known for their electroreceptors (ampullae of Lorenzini) on the head, which are thought to be sensitive to weak electric fields in aquatic environments and involved in feeding, mating and migration. Here, we report the results of a set of behavioral and electrophysiological experiments designed to determine the function and characteristics of the electrosense in cultured sturgeons. The results showed Siberian sturgeon (Acipenser baerii Brandt, 1869) feeding striking at bio-electric fields produced by living feed-fish enclosed in a gel chamber and at the corrosion field produced by metal rods. With an electric stimulus that mimics the bio-electric fields produced by living prey, the relative discharge rate of electrosensory neurons in the dorsal octavolateralis nucleus (DON) was modulated by and phase-locked to sinusoidal stimulus and some units showed selectivity for dipolar direction in white sturgeon (Acipenser transmontanus Richardson, 1836). This is the first study to provide the empirical evidence correlating with electrosensory behaviors and electrophysiological responses in cultured sturgeons, and suggesting that electrosense does play an innate role in feeding behavior of sturgeon. We believe this will have important implications for protecting sturgeons in the wild.
DOI: 10.1111/j.1749-4877.2011.00272.x
PubMed: 22405450
Affiliations:
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Sturgeons, members of the primitive Chondrostei group, are known for their electroreceptors (ampullae of Lorenzini) on the head, which are thought to be sensitive to weak electric fields in aquatic environments and involved in feeding, mating and migration. Here, we report the results of a set of behavioral and electrophysiological experiments designed to determine the function and characteristics of the electrosense in cultured sturgeons. The results showed Siberian sturgeon (Acipenser baerii Brandt, 1869) feeding striking at bio-electric fields produced by living feed-fish enclosed in a gel chamber and at the corrosion field produced by metal rods. With an electric stimulus that mimics the bio-electric fields produced by living prey, the relative discharge rate of electrosensory neurons in the dorsal octavolateralis nucleus (DON) was modulated by and phase-locked to sinusoidal stimulus and some units showed selectivity for dipolar direction in white sturgeon (Acipenser transmontanus Richardson, 1836). This is the first study to provide the empirical evidence correlating with electrosensory behaviors and electrophysiological responses in cultured sturgeons, and suggesting that electrosense does play an innate role in feeding behavior of sturgeon. We believe this will have important implications for protecting sturgeons in the wild.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">22405450</PMID><DateCreated><Year>2012</Year><Month>03</Month><Day>12</Day></DateCreated><DateCompleted><Year>2012</Year><Month>07</Month><Day>31</Day></DateCompleted><DateRevised><Year>2012</Year><Month>03</Month><Day>12</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Electronic">1749-4877</ISSN><JournalIssue CitedMedium="Internet"><Volume>7</Volume><Issue>1</Issue><PubDate><Year>2012</Year><Month>Mar</Month></PubDate></JournalIssue><Title>Integrative zoology</Title><ISOAbbreviation>Integr Zool</ISOAbbreviation></Journal><ArticleTitle>Use of electrosense in the feeding behavior of sturgeons.</ArticleTitle><Pagination><MedlinePgn>74-82</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1111/j.1749-4877.2011.00272.x</ELocationID><Abstract><AbstractText>The electro-receptive lateral line system appeared early in the evolutionary history of fish. Sturgeons, members of the primitive Chondrostei group, are known for their electroreceptors (ampullae of Lorenzini) on the head, which are thought to be sensitive to weak electric fields in aquatic environments and involved in feeding, mating and migration. Here, we report the results of a set of behavioral and electrophysiological experiments designed to determine the function and characteristics of the electrosense in cultured sturgeons. The results showed Siberian sturgeon (Acipenser baerii Brandt, 1869) feeding striking at bio-electric fields produced by living feed-fish enclosed in a gel chamber and at the corrosion field produced by metal rods. With an electric stimulus that mimics the bio-electric fields produced by living prey, the relative discharge rate of electrosensory neurons in the dorsal octavolateralis nucleus (DON) was modulated by and phase-locked to sinusoidal stimulus and some units showed selectivity for dipolar direction in white sturgeon (Acipenser transmontanus Richardson, 1836). This is the first study to provide the empirical evidence correlating with electrosensory behaviors and electrophysiological responses in cultured sturgeons, and suggesting that electrosense does play an innate role in feeding behavior of sturgeon. 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