Heterosis and maternal effects in salinity tolerance of the guppy Poecilia reticulata
Salinity response in F sub(1) hybrids of the guppy was measured as survival time after subjecting mature fish to 35 ppt artificial seawater. The amount of heterosis was expressed by the difference between the means of the F sub(1) hybrids and the parental strains. The mean survival times of the F su...
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| Veröffentlicht in: | Fisheries science 1997, Vol.63 (6), p.893-896 |
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| creator | Shikano, T. (Tohoku Univ., Sendai (Japan). Faculty of Agriculture) Nakadate, M Nakajima, M Fujio, Y |
| description | Salinity response in F sub(1) hybrids of the guppy was measured as survival time after subjecting mature fish to 35 ppt artificial seawater. The amount of heterosis was expressed by the difference between the means of the F sub(1) hybrids and the parental strains. The mean survival times of the F sub(1) hybrids were higher than the mid-parent values, indicating heterosis. The amount of heterosis differed among strain combinations. A positiye correlation was observed between the survival times of the F sub(1) hybrids and the female parents but not between the F sub(1) hybrids and the male parents, indicating maternal effects. These results suggest that the heterosis observed in the F sub(1) hybrids is attributable to two components: the first is the non-maternal component induced by strain combinations and the second is the maternal effects of strain populations. |
| doi_str_mv | 10.2331/fishsci.63.893 |
| format | Article |
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(Tohoku Univ., Sendai (Japan). Faculty of Agriculture) ; Nakadate, M ; Nakajima, M ; Fujio, Y</creator><creatorcontrib>Shikano, T. (Tohoku Univ., Sendai (Japan). Faculty of Agriculture) ; Nakadate, M ; Nakajima, M ; Fujio, Y</creatorcontrib><description>Salinity response in F sub(1) hybrids of the guppy was measured as survival time after subjecting mature fish to 35 ppt artificial seawater. The amount of heterosis was expressed by the difference between the means of the F sub(1) hybrids and the parental strains. The mean survival times of the F sub(1) hybrids were higher than the mid-parent values, indicating heterosis. The amount of heterosis differed among strain combinations. A positiye correlation was observed between the survival times of the F sub(1) hybrids and the female parents but not between the F sub(1) hybrids and the male parents, indicating maternal effects. These results suggest that the heterosis observed in the F sub(1) hybrids is attributable to two components: the first is the non-maternal component induced by strain combinations and the second is the maternal effects of strain populations.</description><identifier>ISSN: 0919-9268</identifier><identifier>EISSN: 1444-2906</identifier><identifier>DOI: 10.2331/fishsci.63.893</identifier><language>eng</language><subject>AGUA SALINA ; CYPRINODONTIFORMES ; EAU SALINE ; F1 HYBRIDS ; HETEROSIS ; HIBRIDOS F1 ; HYBRIDE F1 ; MADRE ; MERE ; MOTHERS ; Poecilia reticulata ; REMOJO ; SALINE WATER ; SALT TOLERANCE ; SOAKING ; SUPERVIVENCIA ; SURVIE ; SURVIVAL ; TEMPS ; TIEMPO ; TIME ; TOLERANCE AU SEL ; TOLERANCIA A LA SAL ; TREMPAGE ; VIGOR HIBRIDO ; VIGUEUR HYBRIDE</subject><ispartof>Fisheries science, 1997, Vol.63 (6), p.893-896</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c522t-56aff2e2b38421d8470d219fcd0294720164ae8d1cf58912f0e8126d91d80d593</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,4024,27923,27924,27925</link.rule.ids></links><search><creatorcontrib>Shikano, T. 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(Tohoku Univ., Sendai (Japan). Faculty of Agriculture)</creatorcontrib><creatorcontrib>Nakadate, M</creatorcontrib><creatorcontrib>Nakajima, M</creatorcontrib><creatorcontrib>Fujio, Y</creatorcontrib><collection>AGRIS</collection><collection>CrossRef</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><jtitle>Fisheries science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Shikano, T. (Tohoku Univ., Sendai (Japan). Faculty of Agriculture)</au><au>Nakadate, M</au><au>Nakajima, M</au><au>Fujio, Y</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Heterosis and maternal effects in salinity tolerance of the guppy Poecilia reticulata</atitle><jtitle>Fisheries science</jtitle><date>1997</date><risdate>1997</risdate><volume>63</volume><issue>6</issue><spage>893</spage><epage>896</epage><pages>893-896</pages><issn>0919-9268</issn><eissn>1444-2906</eissn><abstract>Salinity response in F sub(1) hybrids of the guppy was measured as survival time after subjecting mature fish to 35 ppt artificial seawater. The amount of heterosis was expressed by the difference between the means of the F sub(1) hybrids and the parental strains. The mean survival times of the F sub(1) hybrids were higher than the mid-parent values, indicating heterosis. The amount of heterosis differed among strain combinations. A positiye correlation was observed between the survival times of the F sub(1) hybrids and the female parents but not between the F sub(1) hybrids and the male parents, indicating maternal effects. These results suggest that the heterosis observed in the F sub(1) hybrids is attributable to two components: the first is the non-maternal component induced by strain combinations and the second is the maternal effects of strain populations.</abstract><doi>10.2331/fishsci.63.893</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Fisheries science, 1997, Vol.63 (6), p.893-896 |
| issn | 0919-9268 1444-2906 |
| language | eng |
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| source | J-STAGE Free; EZB-FREE-00999 freely available EZB journals |
| subjects | AGUA SALINA CYPRINODONTIFORMES EAU SALINE F1 HYBRIDS HETEROSIS HIBRIDOS F1 HYBRIDE F1 MADRE MERE MOTHERS Poecilia reticulata REMOJO SALINE WATER SALT TOLERANCE SOAKING SUPERVIVENCIA SURVIE SURVIVAL TEMPS TIEMPO TIME TOLERANCE AU SEL TOLERANCIA A LA SAL TREMPAGE VIGOR HIBRIDO VIGUEUR HYBRIDE |
| title | Heterosis and maternal effects in salinity tolerance of the guppy Poecilia reticulata |
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