Revista del Museo Argentino de Ciencias Naturales, Nueva Serie最新文献

{"title":"Southern beech (Nothofagaceae) fossil leaves from the Río Turbio Formation (Eocene–?Oligocene), Santa Cruz Province, Argentina.","authors":"C. Panti","doi":"10.22179/REVMACN.21.626","DOIUrl":"https://doi.org/10.22179/REVMACN.21.626","url":null,"abstract":"Around one hundred specimens of fossil leaves are described herein and referred to 6 fossil-species and two taxonomic units of Nothofagaceae from the Paleogene Rio Turbio Formation, Santa Cruz Province, Argentina. These are: Nothofagus simplicidens , Nothofagus variabilis , Nothofagus lanceolata , Nothofagus subferruginea , Nothofagus dicksoni , Nothofagus sp. with Nothofagus cf. obliqua and Nothofagus magelhaenica reported for the first time for the unit. They were recorded throughout the unit, but they are fairly more abundant in the upper member of the Rio Turbio Formation where they reach the 68% of the overall assemblage. The observed increasing trend in Nothofagus abundance throughout the unit coincides with the beginning of the flora turnover that characterized Patagonian ecosystems from the Late Eocene onwards and it is in agreement with the marked global cooling trend of the terminal Paleogene.","PeriodicalId":39176,"journal":{"name":"Revista del Museo Argentino de Ciencias Naturales, Nueva Serie","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42831231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The urban ponds as a potential risk in the transmission of parasites","authors":"S. M. Martin, V. Núñez, D. E. G. Gregoric, A. Rumi","doi":"10.22179/REVMACN.21.609","DOIUrl":"https://doi.org/10.22179/REVMACN.21.609","url":null,"abstract":"Abstract We studied freshwater snails inhabiting an urban pond in an enclosed private community from the northern Province of Buenos Aires, Argentina for a year and monitored individuals in order to observe parasite emergence. Specimens of the predominant snail species were measured and analyzed histologically to examine possible larval effects on the gonadal tissue causing alterations in the developmental stages of the gonads and the degree of parasite prevalence per age, sex, and host size calculated. Four species were registered: Pomacea canaliculata , Physa acuta , Biomphalaria peregrina and Heleobia parchappii. The last of these was the most abundant, whose breeding season was in the spring. The parasitized snails exhibited a shorter average length than those free of parasites. The larval prevalence increased with host length, becoming the highest in postreproductive-stage individuals, but was not different between the sexes. Among the emerged cercariae, we noted a marked predominance of the family Notocotylidae. Resumen Las lagunas urbanas como un riesgo potencial en la transmision de parasitos Se estudiaron durante un ano los gasteropodos de agua dulce que habitan en una laguna artificial urbana en un barrio privado del nordeste de la provincia de Buenos Aires, Argentina. Se monitorearon individuos para observar la emergencia de parasitos. Los individuos de las especies de caracoles predominantes se midieron y se analizaron histologicamente para examinar los posibles efectos de larvas en el tejido gonadal, el grado de prevalencia de parasitos por tamano y sexo. Se registraron cuatro especies de gasteropodos: Pomacea canaliculata, Physa acuta, Biomphalaria peregrina y Heleobia parchappii. La ultima de estas especie fue la mas abundante, registrando eventos reproductivos en primavera. Los caracoles parasitados exhibieron una longitud promedio mas baja que aquellos libres de parasitos. La prevalencia de larvas aumento con la longitud del hospedador, llegando a ser la mas alta en individuos en etapa postreproductiva, pero no fue diferente entre los sexos. Entre las cercarias emergentes, notamos un marcado predominio de la familia Notocotylidae","PeriodicalId":39176,"journal":{"name":"Revista del Museo Argentino de Ciencias Naturales, Nueva Serie","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44696497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"First records of coalescence and hypomerism in Tonicia atrata (Polyplacophora, Chitonidae) in the Southwestern Atlantic Ocean","authors":"C. Guillén, D. Urteaga","doi":"10.22179/REVMACN.21.610","DOIUrl":"https://doi.org/10.22179/REVMACN.21.610","url":null,"abstract":"The first cases of anomalies in the number of shell-plates in Tonicia atrata (Sowerby II, 1840) are herein reported on the basis of three specimens from Zaratiegui Bay, Tierra del Fuego, Argentina (54°50’53’’ S, 68°29’7’’ W): two cases of coalescence (one symmetrical and another one asymmetrical) and a case of hypomerism. The abnormal specimens bore less ctenidia than physiological conspecific specimens of similar size. The symmetrical coalescent specimen and the hypomeric individual were significantly wider (higher width/length ratio) than physiological specimens. Nevertheless, the reported abnormalities seem to have no effect on general growth, since the body size of the abnormal specimens were close to the largest physiological ones found in the same locality.","PeriodicalId":39176,"journal":{"name":"Revista del Museo Argentino de Ciencias Naturales, Nueva Serie","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44161390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Presence of Tityus confluens Borelli in Buenos Aires city and the expansion of the distribution of the medically important species of Tityus (Scorpiones; Buthidae) in Argentina","authors":"A. Ojanguren-Affilastro, Cristian Bizzoto, L. Lanari, Mariana Remes Lenicov, A. Roodt","doi":"10.22179/REVMACN.21.638","DOIUrl":"https://doi.org/10.22179/REVMACN.21.638","url":null,"abstract":"","PeriodicalId":39176,"journal":{"name":"Revista del Museo Argentino de Ciencias Naturales, Nueva Serie","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68257043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New species of Euspilotus Lewis of Argentina (Coleoptera: Histeridae)","authors":"Gerardo Arriagada, F. Jofré, F. Aballay","doi":"10.22179/REVMACN.21.602","DOIUrl":"https://doi.org/10.22179/REVMACN.21.602","url":null,"abstract":"","PeriodicalId":39176,"journal":{"name":"Revista del Museo Argentino de Ciencias Naturales, Nueva Serie","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68256248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"First inventory of vertebrates in the private natural reserve El Morejon, Campana, Buenos Aires province","authors":"Valeria Bauni, S. Bogan, Juan Manuel Meluso, M. Homberg, Adrián Giacchino","doi":"10.22179/revmacn.21.646","DOIUrl":"https://doi.org/10.22179/revmacn.21.646","url":null,"abstract":"","PeriodicalId":39176,"journal":{"name":"Revista del Museo Argentino de Ciencias Naturales, Nueva Serie","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68257056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reproduction and fat bodies cycle of Liolaemus espinozai Abdala, 2005 (Sauria: Liolaemidae) from Campo El Arenal, Catamarca, Argentina","authors":"María Paula Cabrera, G. Scrocchi","doi":"10.22179/revmacn.21.649","DOIUrl":"https://doi.org/10.22179/revmacn.21.649","url":null,"abstract":"","PeriodicalId":39176,"journal":{"name":"Revista del Museo Argentino de Ciencias Naturales, Nueva Serie","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68257163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sexual dimorphism and trophic ecology of Aurivela tergolaevigata (Teiidae)","authors":"G. A. Gallardo, M. J. Tulli, Gustavo J. Sccrochi","doi":"10.22179/REVMACN.21.606","DOIUrl":"https://doi.org/10.22179/REVMACN.21.606","url":null,"abstract":"","PeriodicalId":39176,"journal":{"name":"Revista del Museo Argentino de Ciencias Naturales, Nueva Serie","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68256262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biotic vs abiotic resistance: the case of urban spiders in Chile","authors":"A. Taucare-Ríos, A. Brescovit","doi":"10.22179/revmacn.21.622","DOIUrl":"https://doi.org/10.22179/revmacn.21.622","url":null,"abstract":"","PeriodicalId":39176,"journal":{"name":"Revista del Museo Argentino de Ciencias Naturales, Nueva Serie","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68257028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The talares of Zárate (Buenos Aires Province, Argentina). A history of losses and a committed future","authors":"E. L. Guerrero","doi":"10.22179/revmacn.21.616","DOIUrl":"https://doi.org/10.22179/revmacn.21.616","url":null,"abstract":"","PeriodicalId":39176,"journal":{"name":"Revista del Museo Argentino de Ciencias Naturales, Nueva Serie","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68256905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}