Sea snakes ( Lapemis curtus) are sensitive to low-amplitude water motions
The sea snake Lapemis curtus is a piscivorous predator that hunts at dusk. Like land snakes, sea snakes have scale sensillae that may be mechanoreceptive, i.e. that may be useful for the detection of water motions produced by prey fish. In addition, inner ear hair cells of sea snakes may also be inv...
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| Veröffentlicht in: | Zoology (Jena) 2005-01, Vol.108 (3), p.195-200 |
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| creator | Westhoff, Guido Fry, Bryan G. Bleckmann, Horst |
| description | The sea snake
Lapemis curtus is a piscivorous predator that hunts at dusk. Like land snakes, sea snakes have scale sensillae that may be mechanoreceptive, i.e. that may be useful for the detection of water motions produced by prey fish. In addition, inner ear hair cells of sea snakes may also be involved in the detection of hydrodynamic stimuli. We generated water motions and pressure fluctuations with a vibrating sphere. In the test range 50–200
Hz evoked potentials were recorded from the midbrain of
L. curtus in response to vibrating sphere stimuli. In terms of water displacement the lowest threshold amplitudes were in the frequency range 100–150
Hz. In this range peak-to-peak water displacement amplitudes of 1.8
μm (at 100
Hz) and 2.0
μm (150
Hz) generated a neural response in the most sensitive animal. Although this low sensitivity may be sufficient for the detection of fish-generated water motions, it makes it unlikely that
L. curtus has a special hydrodynamic sense. |
| doi_str_mv | 10.1016/j.zool.2005.07.001 |
| format | Article |
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Lapemis curtus is a piscivorous predator that hunts at dusk. Like land snakes, sea snakes have scale sensillae that may be mechanoreceptive, i.e. that may be useful for the detection of water motions produced by prey fish. In addition, inner ear hair cells of sea snakes may also be involved in the detection of hydrodynamic stimuli. We generated water motions and pressure fluctuations with a vibrating sphere. In the test range 50–200
Hz evoked potentials were recorded from the midbrain of
L. curtus in response to vibrating sphere stimuli. In terms of water displacement the lowest threshold amplitudes were in the frequency range 100–150
Hz. In this range peak-to-peak water displacement amplitudes of 1.8
μm (at 100
Hz) and 2.0
μm (150
Hz) generated a neural response in the most sensitive animal. Although this low sensitivity may be sufficient for the detection of fish-generated water motions, it makes it unlikely that
L. curtus has a special hydrodynamic sense.</description><identifier>ISSN: 0944-2006</identifier><identifier>EISSN: 1873-2720</identifier><identifier>DOI: 10.1016/j.zool.2005.07.001</identifier><identifier>PMID: 16351967</identifier><language>eng</language><publisher>Germany: Elsevier GmbH</publisher><subject>Animals ; Elapidae - physiology ; Electric Stimulation ; Electroreception ; Evoked potentials ; Evoked Potentials, Somatosensory - physiology ; Mechanoreception ; Motion Perception - physiology ; Pressure ; Sea snakes ; Water Movements</subject><ispartof>Zoology (Jena), 2005-01, Vol.108 (3), p.195-200</ispartof><rights>2005 Elsevier GmbH</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c354t-321c0cdf52508d6e9f8b3c2cdb826ea038a78a89e972789472a34449aa55a0a03</citedby><cites>FETCH-LOGICAL-c354t-321c0cdf52508d6e9f8b3c2cdb826ea038a78a89e972789472a34449aa55a0a03</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0944200605000383$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3536,27903,27904,65309</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/16351967$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Westhoff, Guido</creatorcontrib><creatorcontrib>Fry, Bryan G.</creatorcontrib><creatorcontrib>Bleckmann, Horst</creatorcontrib><title>Sea snakes ( Lapemis curtus) are sensitive to low-amplitude water motions</title><title>Zoology (Jena)</title><addtitle>Zoology (Jena)</addtitle><description>The sea snake
Lapemis curtus is a piscivorous predator that hunts at dusk. Like land snakes, sea snakes have scale sensillae that may be mechanoreceptive, i.e. that may be useful for the detection of water motions produced by prey fish. In addition, inner ear hair cells of sea snakes may also be involved in the detection of hydrodynamic stimuli. We generated water motions and pressure fluctuations with a vibrating sphere. In the test range 50–200
Hz evoked potentials were recorded from the midbrain of
L. curtus in response to vibrating sphere stimuli. In terms of water displacement the lowest threshold amplitudes were in the frequency range 100–150
Hz. In this range peak-to-peak water displacement amplitudes of 1.8
μm (at 100
Hz) and 2.0
μm (150
Hz) generated a neural response in the most sensitive animal. Although this low sensitivity may be sufficient for the detection of fish-generated water motions, it makes it unlikely that
L. curtus has a special hydrodynamic sense.</description><subject>Animals</subject><subject>Elapidae - physiology</subject><subject>Electric Stimulation</subject><subject>Electroreception</subject><subject>Evoked potentials</subject><subject>Evoked Potentials, Somatosensory - physiology</subject><subject>Mechanoreception</subject><subject>Motion Perception - physiology</subject><subject>Pressure</subject><subject>Sea snakes</subject><subject>Water Movements</subject><issn>0944-2006</issn><issn>1873-2720</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kE1LxDAQhoMoun78AQ-Sk-ihdZK0TQpeRPxYWPCgnkM2nYWsbbMmqYv-ervsgjdPc5jnfZl5CDlnkDNg1c0y__G-zTlAmYPMAdgemTAlRcYlh30ygboosnFdHZHjGJcAIJhgh-SIVaJkdSUnZPqKhsbefGCkV3RmVti5SO0Q0hCvqQlII_bRJfeFNHna-nVmulXr0tAgXZuEgXY-Od_HU3KwMG3Es908Ie-PD2_3z9ns5Wl6fzfLrCiLlAnOLNhmUfISVFNhvVBzYblt5opXaEAoI5VRNdaSS1UXkhtRFEVtTFkaGPcn5HLbuwr-c8CY9HixxbY1Pfoh6kqpmjNRjSDfgjb4GAMu9Cq4zoRvzUBvBOql3gjUG4EapB4FjqGLXfsw77D5i-yMjcDtFsDxxy-HQUfrsLfYuIA26ca7__p_AawIgSo</recordid><startdate>20050101</startdate><enddate>20050101</enddate><creator>Westhoff, Guido</creator><creator>Fry, Bryan G.</creator><creator>Bleckmann, Horst</creator><general>Elsevier GmbH</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20050101</creationdate><title>Sea snakes ( Lapemis curtus) are sensitive to low-amplitude water motions</title><author>Westhoff, Guido ; Fry, Bryan G. ; Bleckmann, Horst</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c354t-321c0cdf52508d6e9f8b3c2cdb826ea038a78a89e972789472a34449aa55a0a03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Animals</topic><topic>Elapidae - physiology</topic><topic>Electric Stimulation</topic><topic>Electroreception</topic><topic>Evoked potentials</topic><topic>Evoked Potentials, Somatosensory - physiology</topic><topic>Mechanoreception</topic><topic>Motion Perception - physiology</topic><topic>Pressure</topic><topic>Sea snakes</topic><topic>Water Movements</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Westhoff, Guido</creatorcontrib><creatorcontrib>Fry, Bryan G.</creatorcontrib><creatorcontrib>Bleckmann, Horst</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Zoology (Jena)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Westhoff, Guido</au><au>Fry, Bryan G.</au><au>Bleckmann, Horst</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Sea snakes ( Lapemis curtus) are sensitive to low-amplitude water motions</atitle><jtitle>Zoology (Jena)</jtitle><addtitle>Zoology (Jena)</addtitle><date>2005-01-01</date><risdate>2005</risdate><volume>108</volume><issue>3</issue><spage>195</spage><epage>200</epage><pages>195-200</pages><issn>0944-2006</issn><eissn>1873-2720</eissn><abstract>The sea snake
Lapemis curtus is a piscivorous predator that hunts at dusk. Like land snakes, sea snakes have scale sensillae that may be mechanoreceptive, i.e. that may be useful for the detection of water motions produced by prey fish. In addition, inner ear hair cells of sea snakes may also be involved in the detection of hydrodynamic stimuli. We generated water motions and pressure fluctuations with a vibrating sphere. In the test range 50–200
Hz evoked potentials were recorded from the midbrain of
L. curtus in response to vibrating sphere stimuli. In terms of water displacement the lowest threshold amplitudes were in the frequency range 100–150
Hz. In this range peak-to-peak water displacement amplitudes of 1.8
μm (at 100
Hz) and 2.0
μm (150
Hz) generated a neural response in the most sensitive animal. Although this low sensitivity may be sufficient for the detection of fish-generated water motions, it makes it unlikely that
L. curtus has a special hydrodynamic sense.</abstract><cop>Germany</cop><pub>Elsevier GmbH</pub><pmid>16351967</pmid><doi>10.1016/j.zool.2005.07.001</doi><tpages>6</tpages></addata></record> |
| fulltext | fulltext |
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| ispartof | Zoology (Jena), 2005-01, Vol.108 (3), p.195-200 |
| issn | 0944-2006 1873-2720 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_68892136 |
| source | MEDLINE; ScienceDirect Journals (5 years ago - present) |
| subjects | Animals Elapidae - physiology Electric Stimulation Electroreception Evoked potentials Evoked Potentials, Somatosensory - physiology Mechanoreception Motion Perception - physiology Pressure Sea snakes Water Movements |
| title | Sea snakes ( Lapemis curtus) are sensitive to low-amplitude water motions |
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