79 research outputs found
Helix straminea Briganti, 1825 in Italy (Gastropoda: Pulmonata): taxonomic history, morphology, biology, distribution and phylogeny
The land snail taxon Helix straminea Briganti, 1825 has been reintroduced as a valid species in 2014. We provide here a comprehensive account of its taxonomy, distribution, anatomy, phylogeny and karyology in Italy. An overview of the historical views on the validity of the species is presented and faunistic data are reviewed and implemented with new records from Campania and Basilicata. A lectotype is fixed for H. straminea from the syntypes stored in the Muséum d'Histoire Naturelle of Genève, as well as for three other taxa (Helix straminiformis Bourguignat, 1876, Helix yleobia Bourguignat, 1883 and Helix straminea ssp. elongata Bourguignat, 1860). Genital system, radula and karyotype are described for the first time. Molecular analysis of two mitochondrial genes combining GenBank data and the new sequences presented in this paper showed no differentiation between the northern and southern Italian populations. The conservation status of the species and its possible threats are discussed
Helix straminea Briganti, 1825 in Italy (Gastropoda: Pulmonata): taxonomic history, morphology, biology, distribution and phylogeny
The land snail taxon Helix straminea Briganti, 1825 has been reintroduced as a valid species in 2014. We provide here a comprehensive account of its taxonomy, distribution, anatomy, phylogeny and karyology in Italy. An overview of the historical views on the validity of the species is presented and faunistic data are reviewed and implemented with new records from Campania and Basilicata. A lectotype is fixed for H. straminea from the syntypes stored in the Muséum d’Histoire Naturelle of Genève, as well as for three other taxa (Helix straminiformis Bourguignat, 1876, Helix yleobia Bourguignat, 1883 and Helix straminea ssp. elongata Bourguignat, 1860). Genital system, radula and karyotype are described for the first time. Molecular analysis of two mitochondrial genes combining GenBank data and the new sequences presented in this paper showed no differentiation between the northern and southern Italian populations. The conservation status of the species and its possible threats are discussed
Scienza e nuove generazioni. I risultati dell'indagine internazionale ROSE
Interessi, atteggiamenti e opinioni degli studenti su scienza e tecnologia dentro e fuori dalla scuola. Una comparazione internazional
Retinal arteriolar obstruction with progestogen treatment of threatened abortion
Purpose: To describe a case of a retinal arteriolar occlusion associated with progestogen treatment of threatened abortion. Methods: Case report. Results: A 30-year-old woman who had received a 2-week course of high dose intramuscular progestogen for a threatened abortion presented with a paracentral scotoma in her right eye and occlusion of a small arteriole adjacent to the macula. There were no major subsequent variations in haemostasis and pre-existing systemic diseases were excluded. Conclusions: Retinal arteriolar occlusion may be associated with high dose progestogen-only therapy in pregnant women
Scienza e nuove generazioni. I risultati dell'indagine internazionale ROSE
Interessi, atteggiamenti e opinioni degli studenti su scienza e tecnologia dentro e fuori dalla scuola. Una comparazione internazional
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