Gestational length in the koala, Phascolarctos cinereus
We report a possible case of extended gestation in the koala, Phascolarctos cinereus. Birth of a pouch young was first observed 127 days after the removal of the male from a multi-female colony at Taronga Zoo. No other males were present at that time or had access to the facility. Head measurements...
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| Veröffentlicht in: | Animal reproduction science 2002-04, Vol.70 (3), p.261-266 |
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| container_title | Animal reproduction science |
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| creator | Gifford, A Fry, G Houlden, B.A Fletcher, T.P Deane, E.M |
| description | We report a possible case of extended gestation in the koala,
Phascolarctos cinereus. Birth of a pouch young was first observed 127 days after the removal of the male from a multi-female colony at Taronga Zoo. No other males were present at that time or had access to the facility. Head measurements and other growth data collected at the time of detection and over the period of pouch life indicates the time from removal of the male and the date of birth to be between 50 and 77 days. DNA fingerprinting using microsatellite loci unambiguously assigned paternity of the pouch young to this male.
These observations suggest either an extended period of gestation of at least 50 days, or activation of a dormant blastocyst from the previous breeding season, as the female entered the period of seasonal oestrus. |
| doi_str_mv | 10.1016/S0378-4320(02)00010-6 |
| format | Article |
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Phascolarctos cinereus. Birth of a pouch young was first observed 127 days after the removal of the male from a multi-female colony at Taronga Zoo. No other males were present at that time or had access to the facility. Head measurements and other growth data collected at the time of detection and over the period of pouch life indicates the time from removal of the male and the date of birth to be between 50 and 77 days. DNA fingerprinting using microsatellite loci unambiguously assigned paternity of the pouch young to this male.
These observations suggest either an extended period of gestation of at least 50 days, or activation of a dormant blastocyst from the previous breeding season, as the female entered the period of seasonal oestrus.</description><identifier>ISSN: 0378-4320</identifier><identifier>EISSN: 1873-2232</identifier><identifier>DOI: 10.1016/S0378-4320(02)00010-6</identifier><identifier>PMID: 11943495</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Animals ; Blastocyst - physiology ; Breeding ; Embryonic and Fetal Development ; Embryonic diapause ; Female ; Genotype ; Gestation length ; Gestational Age ; Koala ; Male ; Marsupialia - embryology ; Marsupialia - genetics ; Marsupialia - physiology ; Marsupials ; Microsatellite Repeats ; Pregnancy ; Seasons ; Time Factors</subject><ispartof>Animal reproduction science, 2002-04, Vol.70 (3), p.261-266</ispartof><rights>2002 Elsevier Science B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c361t-fbb93d7b17e67ac3d9624f4ddde93f98185d105b13988512405e13fbc503e4393</citedby><cites>FETCH-LOGICAL-c361t-fbb93d7b17e67ac3d9624f4ddde93f98185d105b13988512405e13fbc503e4393</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/S0378-4320(02)00010-6$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/11943495$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Gifford, A</creatorcontrib><creatorcontrib>Fry, G</creatorcontrib><creatorcontrib>Houlden, B.A</creatorcontrib><creatorcontrib>Fletcher, T.P</creatorcontrib><creatorcontrib>Deane, E.M</creatorcontrib><title>Gestational length in the koala, Phascolarctos cinereus</title><title>Animal reproduction science</title><addtitle>Anim Reprod Sci</addtitle><description>We report a possible case of extended gestation in the koala,
Phascolarctos cinereus. Birth of a pouch young was first observed 127 days after the removal of the male from a multi-female colony at Taronga Zoo. No other males were present at that time or had access to the facility. Head measurements and other growth data collected at the time of detection and over the period of pouch life indicates the time from removal of the male and the date of birth to be between 50 and 77 days. DNA fingerprinting using microsatellite loci unambiguously assigned paternity of the pouch young to this male.
These observations suggest either an extended period of gestation of at least 50 days, or activation of a dormant blastocyst from the previous breeding season, as the female entered the period of seasonal oestrus.</description><subject>Animals</subject><subject>Blastocyst - physiology</subject><subject>Breeding</subject><subject>Embryonic and Fetal Development</subject><subject>Embryonic diapause</subject><subject>Female</subject><subject>Genotype</subject><subject>Gestation length</subject><subject>Gestational Age</subject><subject>Koala</subject><subject>Male</subject><subject>Marsupialia - embryology</subject><subject>Marsupialia - genetics</subject><subject>Marsupialia - physiology</subject><subject>Marsupials</subject><subject>Microsatellite Repeats</subject><subject>Pregnancy</subject><subject>Seasons</subject><subject>Time Factors</subject><issn>0378-4320</issn><issn>1873-2232</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkE1LAzEQhoMotlZ_grInUXA1H5tkcxIpWoWCgnoO2WTWRrebmmwF_73bD_ToaS7PO-_Mg9AxwZcEE3H1jJks84JRfIbpOcaY4FzsoCEpJcspZXQXDX-RATpI6b2HpBBqHw0IUQUrFB8iOYHUmc6H1jRZA-1bN8t8m3UzyD6CacxF9jQzyYbGRNuFlFnfQoRlOkR7tWkSHG3nCL3e3b6M7_Pp4-RhfDPNLROky-uqUszJikgQ0ljmlKBFXTjnQLFalaTkjmBeEabKkhNaYA6E1ZXlmEHBFBuh083eRQyfy_5WPffJQtOYFsIyaUm4kn1VD_INaGNIKUKtF9HPTfzWBOuVMb02plc6NKZ6bUyLPneyLVhWc3B_qa2iHrjeANC_-eUh6mQ9tBacj2A77YL_p-IHXvF5fw</recordid><startdate>20020415</startdate><enddate>20020415</enddate><creator>Gifford, A</creator><creator>Fry, G</creator><creator>Houlden, B.A</creator><creator>Fletcher, T.P</creator><creator>Deane, E.M</creator><general>Elsevier B.V</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>20020415</creationdate><title>Gestational length in the koala, Phascolarctos cinereus</title><author>Gifford, A ; Fry, G ; Houlden, B.A ; Fletcher, T.P ; Deane, E.M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c361t-fbb93d7b17e67ac3d9624f4ddde93f98185d105b13988512405e13fbc503e4393</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2002</creationdate><topic>Animals</topic><topic>Blastocyst - physiology</topic><topic>Breeding</topic><topic>Embryonic and Fetal Development</topic><topic>Embryonic diapause</topic><topic>Female</topic><topic>Genotype</topic><topic>Gestation length</topic><topic>Gestational Age</topic><topic>Koala</topic><topic>Male</topic><topic>Marsupialia - embryology</topic><topic>Marsupialia - genetics</topic><topic>Marsupialia - physiology</topic><topic>Marsupials</topic><topic>Microsatellite Repeats</topic><topic>Pregnancy</topic><topic>Seasons</topic><topic>Time Factors</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Gifford, A</creatorcontrib><creatorcontrib>Fry, G</creatorcontrib><creatorcontrib>Houlden, B.A</creatorcontrib><creatorcontrib>Fletcher, T.P</creatorcontrib><creatorcontrib>Deane, E.M</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>Animal reproduction science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Gifford, A</au><au>Fry, G</au><au>Houlden, B.A</au><au>Fletcher, T.P</au><au>Deane, E.M</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Gestational length in the koala, Phascolarctos cinereus</atitle><jtitle>Animal reproduction science</jtitle><addtitle>Anim Reprod Sci</addtitle><date>2002-04-15</date><risdate>2002</risdate><volume>70</volume><issue>3</issue><spage>261</spage><epage>266</epage><pages>261-266</pages><issn>0378-4320</issn><eissn>1873-2232</eissn><abstract>We report a possible case of extended gestation in the koala,
Phascolarctos cinereus. Birth of a pouch young was first observed 127 days after the removal of the male from a multi-female colony at Taronga Zoo. No other males were present at that time or had access to the facility. Head measurements and other growth data collected at the time of detection and over the period of pouch life indicates the time from removal of the male and the date of birth to be between 50 and 77 days. DNA fingerprinting using microsatellite loci unambiguously assigned paternity of the pouch young to this male.
These observations suggest either an extended period of gestation of at least 50 days, or activation of a dormant blastocyst from the previous breeding season, as the female entered the period of seasonal oestrus.</abstract><cop>Netherlands</cop><pub>Elsevier B.V</pub><pmid>11943495</pmid><doi>10.1016/S0378-4320(02)00010-6</doi><tpages>6</tpages></addata></record> |
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| ispartof | Animal reproduction science, 2002-04, Vol.70 (3), p.261-266 |
| issn | 0378-4320 1873-2232 |
| language | eng |
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| source | MEDLINE; Elsevier ScienceDirect Journals Complete |
| subjects | Animals Blastocyst - physiology Breeding Embryonic and Fetal Development Embryonic diapause Female Genotype Gestation length Gestational Age Koala Male Marsupialia - embryology Marsupialia - genetics Marsupialia - physiology Marsupials Microsatellite Repeats Pregnancy Seasons Time Factors |
| title | Gestational length in the koala, Phascolarctos cinereus |
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