Live-bearing manta ray: how the embryo acquires oxygen without placenta and umbilical cord
We conducted an ultrasonographic experiment on a pregnant manta ray, Manta alfredi (Chondrichthyes, Batoidea). This study showed how the embryo of the live-bearing elasmobranchs respires in the body of the female. In the embryonic stage, the manta ray embryo takes in uterine fluid by buccal-pumping....
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| Veröffentlicht in: | Biology letters (2005) 2012-10, Vol.8 (5), p.721-724 |
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| creator | Tomita, Taketeru Toda, Minoru Ueda, Keiichi Uchida, Senzo Nakaya, Kazuhiro |
| description | We conducted an ultrasonographic experiment on a pregnant manta ray, Manta alfredi (Chondrichthyes, Batoidea). This study showed how the embryo of the live-bearing elasmobranchs respires in the body of the female. In the embryonic stage, the manta ray embryo takes in uterine fluid by buccal-pumping. After birth, the manta ray shifts its respiratory mode from buccal-pumping to ram-ventilation. The rapid reduction of the spiracle size in the young manta ray may reflect this shift of respiratory mode. Unlike mammals or some carcharhinid sharks that acquire oxygen through a placenta and umbilical cord, the manta ray embryo does not have a direct connection with the mother. Thus, the manta ray embryo obtains oxygen by buccal-pumping of the uterine fluid, in the same way that the embryos of egg-laying species obtain oxygen from the water in the egg case. This finding extends our understanding of the diversity of embryonic respiratory systems in live-bearing vertebrates. |
| doi_str_mv | 10.1098/rsbl.2012.0288 |
| format | Article |
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This study showed how the embryo of the live-bearing elasmobranchs respires in the body of the female. In the embryonic stage, the manta ray embryo takes in uterine fluid by buccal-pumping. After birth, the manta ray shifts its respiratory mode from buccal-pumping to ram-ventilation. The rapid reduction of the spiracle size in the young manta ray may reflect this shift of respiratory mode. Unlike mammals or some carcharhinid sharks that acquire oxygen through a placenta and umbilical cord, the manta ray embryo does not have a direct connection with the mother. Thus, the manta ray embryo obtains oxygen by buccal-pumping of the uterine fluid, in the same way that the embryos of egg-laying species obtain oxygen from the water in the egg case. This finding extends our understanding of the diversity of embryonic respiratory systems in live-bearing vertebrates.</description><identifier>ISSN: 1744-9561</identifier><identifier>EISSN: 1744-957X</identifier><identifier>DOI: 10.1098/rsbl.2012.0288</identifier><identifier>PMID: 22675137</identifier><language>eng</language><publisher>England: The Royal Society</publisher><subject>Animal Behaviour ; Animals ; Batoidea ; Biomechanical Phenomena ; Buccal-Pumping ; Chondrichthyes ; Developmental Biology - methods ; Echosonography ; Elasmobranchii ; Elasmobranchii - embryology ; Elasmobranchii - physiology ; Embryo ; Embryo, Nonmammalian - physiology ; Female ; Japan ; Live-Bearing ; Mammals ; Manta alfredi ; Manta Ray ; Oxygen - metabolism ; Oxygen Consumption ; Placenta - physiology ; Respiration ; Ultrasonography - methods ; Umbilical Cord - physiology ; Uterus - physiology</subject><ispartof>Biology letters (2005), 2012-10, Vol.8 (5), p.721-724</ispartof><rights>This journal is © 2012 The Royal Society</rights><rights>This journal is © 2012 The Royal Society 2012</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c661t-4c50e076b348024f139b00b964099026ade750b16c88151301d36d71c8bea6243</citedby><cites>FETCH-LOGICAL-c661t-4c50e076b348024f139b00b964099026ade750b16c88151301d36d71c8bea6243</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC3440971/pdf/$$EPDF$$P50$$Gpubmedcentral$$H</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC3440971/$$EHTML$$P50$$Gpubmedcentral$$H</linktohtml><link.rule.ids>230,314,727,780,784,885,27924,27925,53791,53793</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22675137$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Tomita, Taketeru</creatorcontrib><creatorcontrib>Toda, Minoru</creatorcontrib><creatorcontrib>Ueda, Keiichi</creatorcontrib><creatorcontrib>Uchida, Senzo</creatorcontrib><creatorcontrib>Nakaya, Kazuhiro</creatorcontrib><title>Live-bearing manta ray: how the embryo acquires oxygen without placenta and umbilical cord</title><title>Biology letters (2005)</title><addtitle>Biol. Lett</addtitle><addtitle>Biol. Lett</addtitle><description>We conducted an ultrasonographic experiment on a pregnant manta ray, Manta alfredi (Chondrichthyes, Batoidea). This study showed how the embryo of the live-bearing elasmobranchs respires in the body of the female. In the embryonic stage, the manta ray embryo takes in uterine fluid by buccal-pumping. After birth, the manta ray shifts its respiratory mode from buccal-pumping to ram-ventilation. The rapid reduction of the spiracle size in the young manta ray may reflect this shift of respiratory mode. Unlike mammals or some carcharhinid sharks that acquire oxygen through a placenta and umbilical cord, the manta ray embryo does not have a direct connection with the mother. Thus, the manta ray embryo obtains oxygen by buccal-pumping of the uterine fluid, in the same way that the embryos of egg-laying species obtain oxygen from the water in the egg case. This finding extends our understanding of the diversity of embryonic respiratory systems in live-bearing vertebrates.</description><subject>Animal Behaviour</subject><subject>Animals</subject><subject>Batoidea</subject><subject>Biomechanical Phenomena</subject><subject>Buccal-Pumping</subject><subject>Chondrichthyes</subject><subject>Developmental Biology - methods</subject><subject>Echosonography</subject><subject>Elasmobranchii</subject><subject>Elasmobranchii - embryology</subject><subject>Elasmobranchii - physiology</subject><subject>Embryo</subject><subject>Embryo, Nonmammalian - physiology</subject><subject>Female</subject><subject>Japan</subject><subject>Live-Bearing</subject><subject>Mammals</subject><subject>Manta alfredi</subject><subject>Manta Ray</subject><subject>Oxygen - metabolism</subject><subject>Oxygen Consumption</subject><subject>Placenta - physiology</subject><subject>Respiration</subject><subject>Ultrasonography - methods</subject><subject>Umbilical Cord - physiology</subject><subject>Uterus - physiology</subject><issn>1744-9561</issn><issn>1744-957X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkc1v1DAUxCMEoqVw5Yh85JLlOU5shwMSrShFWgGCUiEuT47j3XVJ4q2dbBv-ehylrPgQcLItz5v52ZMkjyksKJTymQ9Vs8iAZgvIpLyTHFKR52lZiM9393tOD5IHIVwCMCGguJ8cZBkXBWXiMPmytDuTVkZ5261Jq7peEa_G52Tjrkm_McS0lR8dUfpqsN4E4m7GtenIte03bujJtlHaTEOqq8nQVraxWjVEO18_TO6tVBPMo9v1KPl0-ur85Cxdvnv95uTlMtWc0z7NdQEGBK9YLiHLV5SVFUBV8hzKEjKuaiMKqCjXUtIIDbRmvBZUy0jNs5wdJS9m3-1QtaaecLxqcOttq_yITln89aazG1y7HbI8RggaDZ7eGnh3NZjQY2uDNk2jOuOGgFTQTPCSS_Z_KbAy2lLIonQxS7V3IXiz2hNRwKk7nLrDqTucuosDT35-x17-o6woULPAuzF-qNPW9CNeusF38YgfPh4vd9IWCJJREFQwgd_sdo6RaEMYDBa_pf4Jwf6V8Vf0dJ6yoTc3e3LlvyKPGAVeyBwL_v6tOLs4x1P2HXT91qs</recordid><startdate>20121023</startdate><enddate>20121023</enddate><creator>Tomita, Taketeru</creator><creator>Toda, Minoru</creator><creator>Ueda, Keiichi</creator><creator>Uchida, Senzo</creator><creator>Nakaya, Kazuhiro</creator><general>The Royal Society</general><scope>BSCLL</scope><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><scope>F1W</scope><scope>H95</scope><scope>L.G</scope><scope>5PM</scope></search><sort><creationdate>20121023</creationdate><title>Live-bearing manta ray: how the embryo acquires oxygen without placenta and umbilical cord</title><author>Tomita, Taketeru ; Toda, Minoru ; Ueda, Keiichi ; Uchida, Senzo ; Nakaya, Kazuhiro</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c661t-4c50e076b348024f139b00b964099026ade750b16c88151301d36d71c8bea6243</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Animal Behaviour</topic><topic>Animals</topic><topic>Batoidea</topic><topic>Biomechanical Phenomena</topic><topic>Buccal-Pumping</topic><topic>Chondrichthyes</topic><topic>Developmental Biology - methods</topic><topic>Echosonography</topic><topic>Elasmobranchii</topic><topic>Elasmobranchii - embryology</topic><topic>Elasmobranchii - physiology</topic><topic>Embryo</topic><topic>Embryo, Nonmammalian - physiology</topic><topic>Female</topic><topic>Japan</topic><topic>Live-Bearing</topic><topic>Mammals</topic><topic>Manta alfredi</topic><topic>Manta Ray</topic><topic>Oxygen - metabolism</topic><topic>Oxygen Consumption</topic><topic>Placenta - physiology</topic><topic>Respiration</topic><topic>Ultrasonography - methods</topic><topic>Umbilical Cord - physiology</topic><topic>Uterus - physiology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Tomita, Taketeru</creatorcontrib><creatorcontrib>Toda, Minoru</creatorcontrib><creatorcontrib>Ueda, Keiichi</creatorcontrib><creatorcontrib>Uchida, Senzo</creatorcontrib><creatorcontrib>Nakaya, Kazuhiro</creatorcontrib><collection>Istex</collection><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><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Biology letters (2005)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tomita, Taketeru</au><au>Toda, Minoru</au><au>Ueda, Keiichi</au><au>Uchida, Senzo</au><au>Nakaya, Kazuhiro</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Live-bearing manta ray: how the embryo acquires oxygen without placenta and umbilical cord</atitle><jtitle>Biology letters (2005)</jtitle><stitle>Biol. 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Thus, the manta ray embryo obtains oxygen by buccal-pumping of the uterine fluid, in the same way that the embryos of egg-laying species obtain oxygen from the water in the egg case. This finding extends our understanding of the diversity of embryonic respiratory systems in live-bearing vertebrates.</abstract><cop>England</cop><pub>The Royal Society</pub><pmid>22675137</pmid><doi>10.1098/rsbl.2012.0288</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Animal Behaviour Animals Batoidea Biomechanical Phenomena Buccal-Pumping Chondrichthyes Developmental Biology - methods Echosonography Elasmobranchii Elasmobranchii - embryology Elasmobranchii - physiology Embryo Embryo, Nonmammalian - physiology Female Japan Live-Bearing Mammals Manta alfredi Manta Ray Oxygen - metabolism Oxygen Consumption Placenta - physiology Respiration Ultrasonography - methods Umbilical Cord - physiology Uterus - physiology |
| title | Live-bearing manta ray: how the embryo acquires oxygen without placenta and umbilical cord |
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