Effects of hypergravity on statocyst development in embryonic Aplysia californica
Aplysia californica is a marine gastropod mollusc with bilaterally paired statocysts as gravity-receptor organs. Data from three experiments in which embryonic Aplysia californica were exposed to 2 × g are discussed. The experimental groups were exposed to excess gravity until hatching (9–12 day), w...
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| Veröffentlicht in: | Hearing research 1994-09, Vol.79 (1), p.137-146 |
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| creator | Pedrozo, Hugo A. Wiederhold, Michael L. |
| description | Aplysia californica is a marine gastropod mollusc with bilaterally paired statocysts as gravity-receptor organs. Data from three experiments in which embryonic
Aplysia californica were exposed to 2 ×
g are discussed. The experimental groups were exposed to excess gravity until hatching (9–12 day), whereas control groups were maintained at normal gravity. Body diameter was measured before exposure to 2 ×
g. Statocyst, statolith and body diameter were each determined for samples of 20 embryos from each group on successive days. Exposure to excess gravity led to an increase in body size. Statocyst size was not affected by exposure to 2 ×
g. Statolith size decreased with treatment as indicated by smaller statolith-to-body ratios observed in the 2 ×
g group in all three experiments. Mean statolith diameter was significantly smaller for the 2 ×
g group in Experiment 1 but not in Experiments 2 and 3. Defective statocysts, characterized by very small or no statoliths, were found in the 2 ×
g group in Experiments 1 and 2. |
| doi_str_mv | 10.1016/0378-5955(94)90135-X |
| format | Article |
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Aplysia californica were exposed to 2 ×
g are discussed. The experimental groups were exposed to excess gravity until hatching (9–12 day), whereas control groups were maintained at normal gravity. Body diameter was measured before exposure to 2 ×
g. Statocyst, statolith and body diameter were each determined for samples of 20 embryos from each group on successive days. Exposure to excess gravity led to an increase in body size. Statocyst size was not affected by exposure to 2 ×
g. Statolith size decreased with treatment as indicated by smaller statolith-to-body ratios observed in the 2 ×
g group in all three experiments. Mean statolith diameter was significantly smaller for the 2 ×
g group in Experiment 1 but not in Experiments 2 and 3. Defective statocysts, characterized by very small or no statoliths, were found in the 2 ×
g group in Experiments 1 and 2.</description><identifier>ISSN: 0378-5955</identifier><identifier>EISSN: 1878-5891</identifier><identifier>DOI: 10.1016/0378-5955(94)90135-X</identifier><identifier>PMID: 7806476</identifier><identifier>CODEN: HERED3</identifier><language>eng</language><publisher>Ames Research Center: Elsevier B.V</publisher><subject>Analysis of Variance ; Animals ; Aplysia - embryology ; Aplysia californica ; Biochemistry. Physiology. Immunology ; Biological and medical sciences ; Body Constitution - physiology ; Calcification, Physiologic - physiology ; Ear, Inner - embryology ; Ear, Inner - pathology ; Ear, Inner - physiology ; Fundamental and applied biological sciences. Psychology ; Gravitation ; Gravity ; Invertebrates ; Life Sciences (General) ; Mineralization ; Models, Biological ; Mollusca ; Physiology. Development ; Space life sciences ; Statocyst ; Statolith</subject><ispartof>Hearing research, 1994-09, Vol.79 (1), p.137-146</ispartof><rights>1994</rights><rights>Copyright Determination: PUBLIC_USE_PERMITTED</rights><rights>1995 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c489t-1de7c968a5dc52215c91bf0c45120b95e65c2555210868de67f9a71fb24b86473</citedby><cites>FETCH-LOGICAL-c489t-1de7c968a5dc52215c91bf0c45120b95e65c2555210868de67f9a71fb24b86473</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/037859559490135X$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,796,3536,27903,27904,65309</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=3310757$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/7806476$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Pedrozo, Hugo A.</creatorcontrib><creatorcontrib>Wiederhold, Michael L.</creatorcontrib><title>Effects of hypergravity on statocyst development in embryonic Aplysia californica</title><title>Hearing research</title><addtitle>Hear Res</addtitle><description>Aplysia californica is a marine gastropod mollusc with bilaterally paired statocysts as gravity-receptor organs. Data from three experiments in which embryonic
Aplysia californica were exposed to 2 ×
g are discussed. The experimental groups were exposed to excess gravity until hatching (9–12 day), whereas control groups were maintained at normal gravity. Body diameter was measured before exposure to 2 ×
g. Statocyst, statolith and body diameter were each determined for samples of 20 embryos from each group on successive days. Exposure to excess gravity led to an increase in body size. Statocyst size was not affected by exposure to 2 ×
g. Statolith size decreased with treatment as indicated by smaller statolith-to-body ratios observed in the 2 ×
g group in all three experiments. Mean statolith diameter was significantly smaller for the 2 ×
g group in Experiment 1 but not in Experiments 2 and 3. Defective statocysts, characterized by very small or no statoliths, were found in the 2 ×
g group in Experiments 1 and 2.</description><subject>Analysis of Variance</subject><subject>Animals</subject><subject>Aplysia - embryology</subject><subject>Aplysia californica</subject><subject>Biochemistry. Physiology. Immunology</subject><subject>Biological and medical sciences</subject><subject>Body Constitution - physiology</subject><subject>Calcification, Physiologic - physiology</subject><subject>Ear, Inner - embryology</subject><subject>Ear, Inner - pathology</subject><subject>Ear, Inner - physiology</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Gravitation</subject><subject>Gravity</subject><subject>Invertebrates</subject><subject>Life Sciences (General)</subject><subject>Mineralization</subject><subject>Models, Biological</subject><subject>Mollusca</subject><subject>Physiology. Development</subject><subject>Space life sciences</subject><subject>Statocyst</subject><subject>Statolith</subject><issn>0378-5955</issn><issn>1878-5891</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1994</creationdate><recordtype>article</recordtype><sourceid>CYI</sourceid><sourceid>EIF</sourceid><recordid>eNqFkV2L1TAQhoMo63H1H6yQCxG9qGbSpE1uFpZl_YAFERT2LqTpRCNtU5OeA_33pp7DudSrwLzPDDNPCLkC9g4YNO9Z3apKainfaPFWM6hl9fCI7EBtZaXhMdmdkafkWc6_GANZC35BLlrFGtE2O_L1znt0S6bR05_rjOlHsoewrDRONC92iW7NC-3xgEOcR5wWGiaKY5fWOAVHb-ZhzcFSZ4fgYyol-5w88XbI-OL0XpLvH-6-3X6q7r98_Hx7c185ofRSQY-t042ysneSc5BOQ-eZExI467TERjoupeTAVKN6bFqvbQu-46JTZff6krw-zp1T_L3HvJgxZIfDYCeM-2zaRgNIUP8FoWWccykKKI6gSzHnhN7MKYw2rQaY2ZSbzafZfBotzF_l5qG0vTzN33cj9uemk-OSvzrlNhdPPtnJhXzG6hpYK7d7ro7YZLM105LKZlorxqHm9XbF9THG4vQQMJnsAk4O-5DKB5o-hn-v-QcQ1qV-</recordid><startdate>19940901</startdate><enddate>19940901</enddate><creator>Pedrozo, Hugo A.</creator><creator>Wiederhold, Michael L.</creator><general>Elsevier B.V</general><general>Elsevier Science Publishers Ltd</general><general>Elsevier</general><scope>CYE</scope><scope>CYI</scope><scope>IQODW</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>7TK</scope><scope>7X8</scope><scope>8BM</scope></search><sort><creationdate>19940901</creationdate><title>Effects of hypergravity on statocyst development in embryonic Aplysia californica</title><author>Pedrozo, Hugo A. ; Wiederhold, Michael L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c489t-1de7c968a5dc52215c91bf0c45120b95e65c2555210868de67f9a71fb24b86473</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1994</creationdate><topic>Analysis of Variance</topic><topic>Animals</topic><topic>Aplysia - embryology</topic><topic>Aplysia californica</topic><topic>Biochemistry. Physiology. Immunology</topic><topic>Biological and medical sciences</topic><topic>Body Constitution - physiology</topic><topic>Calcification, Physiologic - physiology</topic><topic>Ear, Inner - embryology</topic><topic>Ear, Inner - pathology</topic><topic>Ear, Inner - physiology</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Gravitation</topic><topic>Gravity</topic><topic>Invertebrates</topic><topic>Life Sciences (General)</topic><topic>Mineralization</topic><topic>Models, Biological</topic><topic>Mollusca</topic><topic>Physiology. Development</topic><topic>Space life sciences</topic><topic>Statocyst</topic><topic>Statolith</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Pedrozo, Hugo A.</creatorcontrib><creatorcontrib>Wiederhold, Michael L.</creatorcontrib><collection>NASA Scientific and Technical Information</collection><collection>NASA Technical Reports Server</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Neurosciences Abstracts</collection><collection>MEDLINE - Academic</collection><collection>ComDisDome</collection><jtitle>Hearing research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Pedrozo, Hugo A.</au><au>Wiederhold, Michael L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of hypergravity on statocyst development in embryonic Aplysia californica</atitle><jtitle>Hearing research</jtitle><addtitle>Hear Res</addtitle><date>1994-09-01</date><risdate>1994</risdate><volume>79</volume><issue>1</issue><spage>137</spage><epage>146</epage><pages>137-146</pages><issn>0378-5955</issn><eissn>1878-5891</eissn><coden>HERED3</coden><abstract>Aplysia californica is a marine gastropod mollusc with bilaterally paired statocysts as gravity-receptor organs. Data from three experiments in which embryonic
Aplysia californica were exposed to 2 ×
g are discussed. The experimental groups were exposed to excess gravity until hatching (9–12 day), whereas control groups were maintained at normal gravity. Body diameter was measured before exposure to 2 ×
g. Statocyst, statolith and body diameter were each determined for samples of 20 embryos from each group on successive days. Exposure to excess gravity led to an increase in body size. Statocyst size was not affected by exposure to 2 ×
g. Statolith size decreased with treatment as indicated by smaller statolith-to-body ratios observed in the 2 ×
g group in all three experiments. Mean statolith diameter was significantly smaller for the 2 ×
g group in Experiment 1 but not in Experiments 2 and 3. Defective statocysts, characterized by very small or no statoliths, were found in the 2 ×
g group in Experiments 1 and 2.</abstract><cop>Ames Research Center</cop><pub>Elsevier B.V</pub><pmid>7806476</pmid><doi>10.1016/0378-5955(94)90135-X</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| source | MEDLINE; Elsevier ScienceDirect Journals; NASA Technical Reports Server |
| subjects | Analysis of Variance Animals Aplysia - embryology Aplysia californica Biochemistry. Physiology. Immunology Biological and medical sciences Body Constitution - physiology Calcification, Physiologic - physiology Ear, Inner - embryology Ear, Inner - pathology Ear, Inner - physiology Fundamental and applied biological sciences. Psychology Gravitation Gravity Invertebrates Life Sciences (General) Mineralization Models, Biological Mollusca Physiology. Development Space life sciences Statocyst Statolith |
| title | Effects of hypergravity on statocyst development in embryonic Aplysia californica |
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