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| Sanna,Daria; Lai,Tiziana; Francalacci,Paolo; Curini-Galletti,Marco; Casu,Marco. |
| Monocelis lineata consists of a complex of sibling species, widespread in the Mediterranean and Atlantic Ocean. Previous genetic analysis placed in evidence at least four sibling species. Nevertheless, this research was not conclusive enough to fully resolve the complex or to infer the phylogeny/phylogeography of the group. We designed specific primers aiming at obtaining partial sequences of the mtDNA gene Cytochrome c Oxidase subunit I (COI) of M. lineata, and have identified 25 different haplotypes in 32 analyzed individuals. The dendrogram generated by Neighbor-Joining analysis confirmed the differentiation between Atlantic and Mediterranean siblings, as well as the occurrence of at least two Mediterranean sibling species. Thus validated, the method... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Microturbellaria; Sequencing; Sibling species; Phylogeography; Phylogeny. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000400031 |
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| ROSA,MARCOS T.; PEREIRA,CAMILA. M.; RAGAGNIN,GEOVANI. T.; LORETO,ELGION. L.S.. |
| ABSTRACT Species of Stenostomum are small flatworms that live in freshwater and normally reproduce asexually by paratomy. They are basal in the phylogeny of Platyhelminthes. For more than a century, species of this genus, especially S. leucops, have been used in regeneration and other biological studies. However, some basic aspects of their biology are poorly known. Here, we characterized a strain of S. leucops that has been maintained in the laboratory for five years and a recent strain of S. grande. The time required for complete formation of zooids of S. leucops by asexual reproduction is approximately 42.5 hours at 28°C. The number of cells in the zooids, soon after paratomy, is approximately 2,500. The number of zooids formed in the chain is a plastic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stenostomum grande; Paratomy; Zooids; Number of cells; Microturbellaria. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492015002700375 |
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