Gli Autori trattano in questa nota alcune specie di Calathus dell’area Mediterranea; talegruppo comprende C. libanensis s. 1., C. oertzeni, C. acuticollis, C. casalei, C. opacus, C. granatensise C. reflxus. Tale grup...Gli Autori trattano in questa nota alcune specie di Calathus dell’area Mediterranea; talegruppo comprende C. libanensis s. 1., C. oertzeni, C. acuticollis, C. casalei, C. opacus, C. granatensise C. reflxus. Tale gruppo sembra mostrare una certa affinità con alcune specie delle isole atlantichee con il gruppo di C. arcuatus, a distribuzione nella regione pontica. C. pluriseriatus viene considerato sottospecie di C. libanensis a causa della grande affinità e dell’allo-patria con questo. Vengono inoltre descritti i maschi, finora sconosciuti, di C. oertzeni, C. reflexus eC. acuticollis e vengono fornite le illustrazioni dell’edeago di tutte le specie. Infine viene data una tabelladi determinazione per le specie di questo gruppo. Studies on some Calathus Bonelli from the Mediterranean region (Coleoptera Carabidae).The Authors consider some species of Calathus from the Mediterranean region: C. libanensis s. 1., C.oertzeni, C. acuticollis, C. casalei, C. opacus, C. granatensis and C. reflexus. This group seems to showaffinities with some species from the Atlantic islands and with the group of C. arcuatus, from the ponticregion. C. pluriseriatus is considered as a subspecies of C. libanensis because of their great affinity andallopatry. The males of C. oertzeni, C. reflexus and C. acuticollis previously unknown are describedand their aedeagus figured. A key to all the species concludes the article.展开更多
Regeneration,relying mainly on resident adult stem cells,is widespread.However,the mechanism by which stem cells initiate proliferation during this process in vivo is unclear.Using planarian as a model,we screened 46 ...Regeneration,relying mainly on resident adult stem cells,is widespread.However,the mechanism by which stem cells initiate proliferation during this process in vivo is unclear.Using planarian as a model,we screened 46 transcripts showing potential function in the regulation of local stem cell proliferation following 48 h regeneration.By analyzing the regeneration defects and the mitotic activity of animals under administration of RNA interference(RNAi),we identified factor for initiating regeneration 1(Fir1)required for local proliferation.Our findings reveal that Fir1,enriched in neoblasts,promotes planarian regeneration in any tissue-missing context.Further,we demonstrate that DIS3 like 3-5'exoribonuclease 2(Dis3l2)is required for Fir1 phenotype.Besides,RNAi knockdown of Fir1 causes a decrease of neoblast wound response genes following amputation.These findings suggest that Fir1 recognizes regenerative signals and promotes DIS3L2 proteins to trigger neoblast proliferation following amputation and provide a mechanism critical for stem cell response to injury.展开更多
文摘Gli Autori trattano in questa nota alcune specie di Calathus dell’area Mediterranea; talegruppo comprende C. libanensis s. 1., C. oertzeni, C. acuticollis, C. casalei, C. opacus, C. granatensise C. reflxus. Tale gruppo sembra mostrare una certa affinità con alcune specie delle isole atlantichee con il gruppo di C. arcuatus, a distribuzione nella regione pontica. C. pluriseriatus viene considerato sottospecie di C. libanensis a causa della grande affinità e dell’allo-patria con questo. Vengono inoltre descritti i maschi, finora sconosciuti, di C. oertzeni, C. reflexus eC. acuticollis e vengono fornite le illustrazioni dell’edeago di tutte le specie. Infine viene data una tabelladi determinazione per le specie di questo gruppo. Studies on some Calathus Bonelli from the Mediterranean region (Coleoptera Carabidae).The Authors consider some species of Calathus from the Mediterranean region: C. libanensis s. 1., C.oertzeni, C. acuticollis, C. casalei, C. opacus, C. granatensis and C. reflexus. This group seems to showaffinities with some species from the Atlantic islands and with the group of C. arcuatus, from the ponticregion. C. pluriseriatus is considered as a subspecies of C. libanensis because of their great affinity andallopatry. The males of C. oertzeni, C. reflexus and C. acuticollis previously unknown are describedand their aedeagus figured. A key to all the species concludes the article.
基金the National Key Research and Development Program of China(2017YFA0103700)the Strategic Priority Research Program of the Chinese Academy of Sciences(XDA16020903)the National Natural Science Foundation of China(91739301,91339205,and 31229002).
文摘Regeneration,relying mainly on resident adult stem cells,is widespread.However,the mechanism by which stem cells initiate proliferation during this process in vivo is unclear.Using planarian as a model,we screened 46 transcripts showing potential function in the regulation of local stem cell proliferation following 48 h regeneration.By analyzing the regeneration defects and the mitotic activity of animals under administration of RNA interference(RNAi),we identified factor for initiating regeneration 1(Fir1)required for local proliferation.Our findings reveal that Fir1,enriched in neoblasts,promotes planarian regeneration in any tissue-missing context.Further,we demonstrate that DIS3 like 3-5'exoribonuclease 2(Dis3l2)is required for Fir1 phenotype.Besides,RNAi knockdown of Fir1 causes a decrease of neoblast wound response genes following amputation.These findings suggest that Fir1 recognizes regenerative signals and promotes DIS3L2 proteins to trigger neoblast proliferation following amputation and provide a mechanism critical for stem cell response to injury.
