[[!meta title="Mechanism of the block to hybridization and selfing between the sympatric ascidians Ciona intestinalis and Ciona savignyi."]]
-[[!tag tunicate speciation]]
+[[!tag Ciona speciation]]
Mol Reprod Dev. 2000 Jan;55(1):109-16 doi:10.1002/(SICI)1098-2795(200001)55:1%3C109::AID-MRD15%3E3.0.CO;2-B
--- /dev/null
+[[!meta title="Genomic approaches reveal unexpected genetic divergence within Ciona intestinalis."]]
+[[!tag Ciona speciation]]
+
+Suzuki MM, Nishikawa T and Bird A.
+
+J Mol Evol. 2005 Nov;61(5):627-35. Epub 2005 Oct 4.
+
+Genomic approaches reveal unexpected genetic divergence within Ciona intestinalis.
+
+[[!pmid 16205978 desc="C. robusta sperm can fertilise C. intestinalis eggs. In 3 reciprocal crosses, C. int sperm was less efficient (40~70%) and in 2 crosses, it was ver inefficient (~5 %). Hybrids developed to young adults in laboratory. Reproductive isolation estimated to have started 30 MY ago. Ideal temperature for breeding differs of 5 °C."]]
Coupling molecular data and experimental crosses sheds light about species delineation: a case study with the genus Ciona.
-[[!pmid 29367599 desc="C. robusta sperm can fertilise C. intestinalis eggs, but not the converse. Phylogenetic analysis of mitochondrial CO1 sequences suggests that there are no hybrids in wild populations."]]
+[[!pmid 29367599 desc="C. robusta sperm can fertilise C. intestinalis eggs, but
+fertilisation rates in the converse crosses are much lower. Phylogenetic
+analysis of mitochondrial CO1 sequences suggests that there are no hybrids in
+wild populations."]]
[[!meta title="pages tagged Ciona"]]
-[[!inline pages="tagged(Ciona)" actions="no" archive="yes"
-feedshow=10]]
+_Ciona robusta_'s sperm can efficiently fertilise _C. intestinalis_ eggs, but
+the fertilisation crosses are much lower in the reciprocal crosses ([[Suzuki,
+Nishikawa and Bird, 2005|biblio/16205978]], [[Malfant, Darras and Viart,
+2018|biblio/29367599]]).
+
+_C. intestinalis_ and _C. savignyi_ can cross-fertilise after removal of the
+vitelline enveloppe ([[Byrd and Lambert, 2000|biblio/10602281]]).
+
+[[!inline pages="tagged(Ciona)" actions="no" limit=0]]