Pub Date : 2017-12-01DOI: 10.4067/S0718-686X2017000300059
C. Andrade, F. Ovando
Abstract This study reports the first record of microplastics in the stomach contents of the king crab Lithodes santolla . Samples were collected in Nassau Bay during September 2017. Plastics ingested belonged to small microplastics between 3.0 and more than 20 mm long having mainly blue color. Their frequency of occurrence in stomachs was 27%. The microplastic ingestion by L. santolla may present not only a risk for the species self, also for other trophic levels in the food web. Resumen El presente estudio reporta por primera vez la presencia de microplasticos en los estomagos del crustaceo comercial centolla Lithodes santolla. Las muestras fueron colectadas en septiembre de 2017, en el sector de bahia Nassau, en el archipielago de Cabo de Hornos, Chile. Los plasticos ingeridos corresponden a pequenas fibras microplasticas entre 3 y mas de 20 mm de longitud, los cuales tienen una coloracion principalmente azul. Su frecuencia de ocurrencia en los estomagos fue de un 27%. La ingestion de microplasticos podria representar un riesgo para la especie como tambien para otros organismos predadores de L. santolla y asi afectando a toda la trama trofica marina.
= =地理= =根据美国人口普查，这个县的总面积是，其中土地和水(0.04平方公里)。这首歌于2017年9月在拿骚湾收集。食用的塑料属于3.0毫米至20毫米以上的小微塑料，主要为蓝色。= =地理= =根据美国人口普查局的数据，该县总面积为，其中土地和(1.27%)水。microplastic吸入by l . santolla可目前not only a risk for The species self,食物for other trophic水平in The web。本文的目的是分析在不同的研究中，在不同的研究中，在不同的研究中，在不同的研究中，在不同的研究中，在不同的研究中，在不同的研究中，在不同的研究中，在不同的研究中。这些样本于2017年9月在智利合恩角群岛的巴伊亚拿骚区收集。摄入的塑料对应的是长度在3到20毫米以上的小微塑料纤维，主要呈蓝色。它在胃中出现的频率为27%。微塑料的摄入可能对该物种和其他掠食性生物构成风险，从而影响整个海洋营养网络。
{"title":"First record of microplastics in stomach content of the southern king crab Lithodes santolla (Anomura: Lithodidae), Nassau bay, Cape Horn / Primer registro de microplásticos en contenido estomacal de centolla Lithodes santolla (Anomura: Lithodidae), bahía Nassau, Cabo de Hornos, Chile","authors":"C. Andrade, F. Ovando","doi":"10.4067/S0718-686X2017000300059","DOIUrl":"https://doi.org/10.4067/S0718-686X2017000300059","url":null,"abstract":"Abstract This study reports the first record of microplastics in the stomach contents of the king crab Lithodes santolla . Samples were collected in Nassau Bay during September 2017. Plastics ingested belonged to small microplastics between 3.0 and more than 20 mm long having mainly blue color. Their frequency of occurrence in stomachs was 27%. The microplastic ingestion by L. santolla may present not only a risk for the species self, also for other trophic levels in the food web. Resumen El presente estudio reporta por primera vez la presencia de microplasticos en los estomagos del crustaceo comercial centolla Lithodes santolla. Las muestras fueron colectadas en septiembre de 2017, en el sector de bahia Nassau, en el archipielago de Cabo de Hornos, Chile. Los plasticos ingeridos corresponden a pequenas fibras microplasticas entre 3 y mas de 20 mm de longitud, los cuales tienen una coloracion principalmente azul. Su frecuencia de ocurrencia en los estomagos fue de un 27%. La ingestion de microplasticos podria representar un riesgo para la especie como tambien para otros organismos predadores de L. santolla y asi afectando a toda la trama trofica marina.","PeriodicalId":207115,"journal":{"name":"Anales Del Instituto De La Patagonia","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122359574","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}
Pub Date : 2017-12-01DOI: 10.4067/S0718-686X2017000300073
Javier Rendoll Cárcamo, T. Contador, L. Zúñiga
{"title":"Observaciones sobre robo primario de néctar de Vespula vulgaris L., 1758 (Hymenoptera: Vespidae) en flores de Embothrium coccineum ( J. R. Forst. & G. Forst., 1775) (Proteaceae) en el sur de chile (55°S)","authors":"Javier Rendoll Cárcamo, T. Contador, L. Zúñiga","doi":"10.4067/S0718-686X2017000300073","DOIUrl":"https://doi.org/10.4067/S0718-686X2017000300073","url":null,"abstract":"","PeriodicalId":207115,"journal":{"name":"Anales Del Instituto De La Patagonia","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122808136","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}
Pub Date : 2017-12-01DOI: 10.4067/S0718-686X2017000300045
P. Cid-Agüero, J. Cuello, S. Ruiz, Gloria E Sánchez
The main objective of this study was to investigate culture substrates, stress conditions and coldadaptive cellular lipid products of potential industrial interest associated with the short-term environmental adaptation by an Antarctic snow microalga. Viable culture lines of the Antarctic snow microalga Chlamydomonas sp. (DPA-02 strain) were obtained after two years storage period at -4 oC without light source. The darkadapted Chlamydomonas sp. exhibited high sensitivity to light, growing optimally on Bristol 46 P. CID-AGÜERO et al. media under a light level of 10 μmol m-2 s-1 and a temperature of 12 ± 2oC. The snow microalga yielded 93% of its lipid content as saturated fatty acids, 67% of which was palmitic acid (C16:0). The study also showed the significant alteration of the microalga’s lipid profile by modifying the culture’s growing conditions, resulting in a significant increase in PUFA’s independently of the culture temperature, from about 10% to 70%, when the culture was subjected to continuous darkness over a one-month period. The growth rate of the microalga decreased with increase in NaCl concentration in the growing medium. Further, the microalga was found to be sensitive to the physical matrix on which it grew, showing a higher mortality rate when exposed to a low-temperature shock on a solid medium different than snow or ice. These results provided unprecedented insights into cryoprotective strategies employed by snow microalgae to survive under the severe environmental conditions of Antarctica.
本研究的主要目的是研究与南极雪微藻短期环境适应相关的培养基质、应激条件和冷适应细胞脂质产物。对南极雪微藻衣藻(Chlamydomonas sp.， DPA-02菌株)在-4℃无光源条件下保存2年，获得了有活力的培养系。暗适应衣藻(Chlamydomonas sp.)对光具有较高的敏感性，在10 μmol m-2 s-1光照和12±20℃的温度条件下，在Bristol 46 P. CID-AGÜERO等培养基上生长最佳。雪微藻脂质含量93%为饱和脂肪酸，其中67%为棕榈酸(C16:0)。该研究还表明，通过改变培养物的生长条件，微藻的脂质谱发生了显著的变化，当培养物连续黑暗一个月时，PUFA的含量显著增加，与培养温度无关，从10%左右增加到70%。随着生长培养基中NaCl浓度的增加，微藻的生长速率降低。此外，发现微藻对其生长的物理基质敏感，当暴露在不同于雪或冰的固体介质上受到低温冲击时，死亡率更高。这些结果为雪微藻在南极洲恶劣环境条件下生存所采用的低温保护策略提供了前所未有的见解。
{"title":"Growth and lipid profiles of the Antarctic snow microalga Chlamydomonas sp. In response to changes in temperature, photoperiod, salinity and substrate","authors":"P. Cid-Agüero, J. Cuello, S. Ruiz, Gloria E Sánchez","doi":"10.4067/S0718-686X2017000300045","DOIUrl":"https://doi.org/10.4067/S0718-686X2017000300045","url":null,"abstract":"The main objective of this study was to investigate culture substrates, stress conditions and coldadaptive cellular lipid products of potential industrial interest associated with the short-term environmental adaptation by an Antarctic snow microalga. Viable culture lines of the Antarctic snow microalga Chlamydomonas sp. (DPA-02 strain) were obtained after two years storage period at -4 oC without light source. The darkadapted Chlamydomonas sp. exhibited high sensitivity to light, growing optimally on Bristol 46 P. CID-AGÜERO et al. media under a light level of 10 μmol m-2 s-1 and a temperature of 12 ± 2oC. The snow microalga yielded 93% of its lipid content as saturated fatty acids, 67% of which was palmitic acid (C16:0). The study also showed the significant alteration of the microalga’s lipid profile by modifying the culture’s growing conditions, resulting in a significant increase in PUFA’s independently of the culture temperature, from about 10% to 70%, when the culture was subjected to continuous darkness over a one-month period. The growth rate of the microalga decreased with increase in NaCl concentration in the growing medium. Further, the microalga was found to be sensitive to the physical matrix on which it grew, showing a higher mortality rate when exposed to a low-temperature shock on a solid medium different than snow or ice. These results provided unprecedented insights into cryoprotective strategies employed by snow microalgae to survive under the severe environmental conditions of Antarctica.","PeriodicalId":207115,"journal":{"name":"Anales Del Instituto De La Patagonia","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127567235","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}
Pub Date : 2017-12-01DOI: 10.4067/s0718-686x2017000300079
Eduardo-I. Faundez, F. Raffo
{"title":"Nuevos datos sobre Althos distinctus ( Signoret, 1864) (Hemiptera: Heteroptera: Coreidae) en Patagonia","authors":"Eduardo-I. Faundez, F. Raffo","doi":"10.4067/s0718-686x2017000300079","DOIUrl":"https://doi.org/10.4067/s0718-686x2017000300079","url":null,"abstract":"","PeriodicalId":207115,"journal":{"name":"Anales Del Instituto De La Patagonia","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124712634","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}
Pub Date : 2017-12-01DOI: 10.4067/S0718-686X2017000300033
J. Ojeda, J. Rodríguez, Sebastian Rosenfeld, Nicolas Vega
La zona intermareal de canales subantarticos de Magallanes presenta diversos tipos de sustratos rocosos, los cuales pueden provocar cambios en la estructura de las comunidades que habitan este ecosistema. Este estudio comparo la composicion taxonomica, rasgos funcionales ( e.g., moviles y sesiles) y parametros de estructura comunitaria como riqueza, abundancia, disimilitud en dos tipos de sustratos rocosos (bolones y plataformas) durante invierno y verano en sitios del intermareal bajo en isla Navarino, canal Beagle. La riqueza de taxones fue evaluada mediante la categorizacion de organismos sesiles y moviles, determinando su abundancia y disimilitud entre estaciones y sustratos. Se identificaron 33 taxones. La mayor riqueza de taxones fue observada en el sustrato de bolones. El patelogasteropodo Nacella spp presento la mayor contribucion en abundancia para organismos moviles en ambos sustratos. En cuanto a la estructura comunitaria, el mayor promedio de disimilitud entre bolones y plataformas fue para organismos moviles. Los taxones que mas contribuyeron a esta disimilitud fueron los carnivoros Anasterias antarctica (18%) y Trophon geversianus (13%). La primera especie mas abundante en bolones y la segunda en plataformas. El tipo de sustrato puede afectar la estructura comunitaria, la cual se ve reflejada principalmente en la identidad, historia de vida y los rasgos morfologicos de los organismos moviles en las costas rocosas de los canales subantarticos de la Reserva de Biosfera Cabo de Hornos. Abstract Magellanic Subantarctic channels’ coastal zones have several types of rocky substrate, which might provoke changes in communities’ structure. The present study compared the composition, functional traits and community structure of the low intertidal on two types of rocky substrates (boulders and platforms) during winter and summer on Navarino Island, Beagle Channel. Taxa richness was evaluated by the categorization of sessile and mobile organisms, determining their abundance and dissimilarity between seasons and type of rocky substrates. 33 taxa were identified. The highest taxa richness was found in the boulders substrate. The patellogastropod Nacella spp. had the greatest contribution to abundance for mobiles invertebrate in both substrates. The highest average dissimilarity between boulders and platforms observed for mobile organisms. The taxa that contributed most to this dissimilarity were the carnivorous Anasterias antarctica (18%) and Trophon geversianus (13%). The first was most abundant in boulders and the second in platforms. The type of substrate may affect the identity, life history and morphological features of mobile organisms on the rocky shores of the Magellanic sub-Antarctic channels.
亚南极麦哲伦海峡潮间带呈现出不同类型的岩石基底，这些基底可能导致居住在该生态系统中的群落结构发生变化。本研究比较了比格尔海峡纳瓦里诺岛低潮间带两种岩石基底(波隆和大陆架)在冬季和夏季的分类组成、功能特征(如移动和无齿)和群落结构参数(如丰富度、丰度和不均匀度)。通过对无毛生物和移动生物的分类，确定它们的丰度和季节与基质之间的差异。鉴定出33个类群。在本研究中，我们分析了不同类群的丰度和分布。在这两种基质中，patelogasteropodo Nacella spp对移动生物的丰度贡献最大。在群落结构方面，移动生物与平台之间的平均差异最高。对这种差异贡献最大的类群是食肉动物南极Anasterias antarctica(18%)和Trophon geversianus(13%)。第一个物种在bolones中最丰富，第二个物种在平台中最丰富。基质的类型可能会影响群落结构，这主要反映在合恩角生物圈保护区亚南极通道岩石海岸移动生物的身份、生活史和形态特征上。= =地理= =根据美国人口普查，该地区的总面积为，其中土地和(2.641平方公里)水。本研究比较了比格尔海峡纳瓦里诺岛冬季和夏季两种岩石基底(巨石和平台)低潮间带的组成、功能特征和群落结构。= =地理= =根据美国人口普查，这个县的总面积为，其中土地和(2.641平方公里)水。33个类群被鉴定。= =地理= =根据美国人口普查局的数据，该县总面积为，其中土地和(1.1%)水。= =地理= =根据美国人口普查，这个县的总面积为，其中土地和(2.641平方公里)水。= =地理= =根据美国人口普查，该地区的总面积为，其中土地和(2.641平方公里)水。有关taxa that most contributed to this dissimilarity The carnivorous Anasterias antarctica(18%)和Trophon geversianus(13%)。= =地理= =根据美国人口普查，这个县的总面积是，其中土地和(0.964平方公里)水。The type of substrate可能影响identity, life history and morphological特写of mobile organisms on The岩石海岸of The Magellanic sub-Antarctic渠道。
{"title":"Comparación de la estructura comunitaria entre plataformas y bolones del intermareal en isla Navarino, Reserva de Biósfera Cabo de Hornos / Comparison of the community structures of intertidal platforms and boulders in Navarino Island, Cape Horn Biosphere Reserve","authors":"J. Ojeda, J. Rodríguez, Sebastian Rosenfeld, Nicolas Vega","doi":"10.4067/S0718-686X2017000300033","DOIUrl":"https://doi.org/10.4067/S0718-686X2017000300033","url":null,"abstract":"La zona intermareal de canales subantarticos de Magallanes presenta diversos tipos de sustratos rocosos, los cuales pueden provocar cambios en la estructura de las comunidades que habitan este ecosistema. Este estudio comparo la composicion taxonomica, rasgos funcionales ( e.g., moviles y sesiles) y parametros de estructura comunitaria como riqueza, abundancia, disimilitud en dos tipos de sustratos rocosos (bolones y plataformas) durante invierno y verano en sitios del intermareal bajo en isla Navarino, canal Beagle. La riqueza de taxones fue evaluada mediante la categorizacion de organismos sesiles y moviles, determinando su abundancia y disimilitud entre estaciones y sustratos. Se identificaron 33 taxones. La mayor riqueza de taxones fue observada en el sustrato de bolones. El patelogasteropodo Nacella spp presento la mayor contribucion en abundancia para organismos moviles en ambos sustratos. En cuanto a la estructura comunitaria, el mayor promedio de disimilitud entre bolones y plataformas fue para organismos moviles. Los taxones que mas contribuyeron a esta disimilitud fueron los carnivoros Anasterias antarctica (18%) y Trophon geversianus (13%). La primera especie mas abundante en bolones y la segunda en plataformas. El tipo de sustrato puede afectar la estructura comunitaria, la cual se ve reflejada principalmente en la identidad, historia de vida y los rasgos morfologicos de los organismos moviles en las costas rocosas de los canales subantarticos de la Reserva de Biosfera Cabo de Hornos. Abstract Magellanic Subantarctic channels’ coastal zones have several types of rocky substrate, which might provoke changes in communities’ structure. The present study compared the composition, functional traits and community structure of the low intertidal on two types of rocky substrates (boulders and platforms) during winter and summer on Navarino Island, Beagle Channel. Taxa richness was evaluated by the categorization of sessile and mobile organisms, determining their abundance and dissimilarity between seasons and type of rocky substrates. 33 taxa were identified. The highest taxa richness was found in the boulders substrate. The patellogastropod Nacella spp. had the greatest contribution to abundance for mobiles invertebrate in both substrates. The highest average dissimilarity between boulders and platforms observed for mobile organisms. The taxa that contributed most to this dissimilarity were the carnivorous Anasterias antarctica (18%) and Trophon geversianus (13%). The first was most abundant in boulders and the second in platforms. The type of substrate may affect the identity, life history and morphological features of mobile organisms on the rocky shores of the Magellanic sub-Antarctic channels.","PeriodicalId":207115,"journal":{"name":"Anales Del Instituto De La Patagonia","volume":" 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113951001","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}
Pub Date : 2017-12-01DOI: 10.4067/S0718-686X2017000300005
Jorge Carrasco
Abstract A three-dimensional numerical model of 100- km horizontal resolution was used to simulate subsynoptic-scale cyclogenesis around an idealized Antarctic continent. The simulation resolved a series of subsynoptic-scale cyclones around the idealized continent. These cyclones form adjacent to the confluence zones of katabatic winds. Their movements indicate an eastward direction going away from their initial point of formation. Baroclinic instability appears as primary mechanism for the development of these cyclones. Resumen Un modelo numerico tridimensional de 100 km de resolucion horizontal, fue utilizado para simular ciclogenesis a escala subsinoptica alrededor de un continente antartico idealizado. La simulacion resuelve una serie de centros depresionarios alrededor del continente idealizado. La formacion de los ciclones ocurre adyacentes a las zonas de convergencia del flujo de vientos catabaticos. Su desplazamiento indica una direccion al este alejandose de su area de formacion inicial. La inestabilidad baroclinica aparece como mecanismo primario para el desarrollo de estos ciclones
Abstract A three-dimensional意大利model of 100 - resolution was用来模拟横向公里subsynoptic-scale cyclogenesis around an idealized南极continent。= =地理= =根据美国人口普查，该县的总面积为，其中土地和(1.1%)水。= =地理= =根据美国人口普查局的数据，该县的总面积为，其中土地和(1.)水。= =地理= =根据美国人口普查，这个县的总面积为，其中土地和(0.984平方公里)水。= =地理= =根据美国人口普查局的数据，该县总面积为，其中土地和(1.1%)水。本文的目的是分析在南极大陆上发生的事件，并分析在南极大陆上发生的事件。模拟解决了理想大陆周围的一系列低气压中心。气旋的形成发生在阵风汇聚区附近。它的位移表明它向东远离最初的形成区域。斜斜不稳定性是这些气旋发展的主要机制
{"title":"Numerical simulation of subsynoptic-scale cyclogenesis around an idealized antarctic continent / Simulación numérica de ciclogénesis a escala subsinóptica alrededor de un continente antártico idealizado","authors":"Jorge Carrasco","doi":"10.4067/S0718-686X2017000300005","DOIUrl":"https://doi.org/10.4067/S0718-686X2017000300005","url":null,"abstract":"Abstract A three-dimensional numerical model of 100- km horizontal resolution was used to simulate subsynoptic-scale cyclogenesis around an idealized Antarctic continent. The simulation resolved a series of subsynoptic-scale cyclones around the idealized continent. These cyclones form adjacent to the confluence zones of katabatic winds. Their movements indicate an eastward direction going away from their initial point of formation. Baroclinic instability appears as primary mechanism for the development of these cyclones. Resumen Un modelo numerico tridimensional de 100 km de resolucion horizontal, fue utilizado para simular ciclogenesis a escala subsinoptica alrededor de un continente antartico idealizado. La simulacion resuelve una serie de centros depresionarios alrededor del continente idealizado. La formacion de los ciclones ocurre adyacentes a las zonas de convergencia del flujo de vientos catabaticos. Su desplazamiento indica una direccion al este alejandose de su area de formacion inicial. La inestabilidad baroclinica aparece como mecanismo primario para el desarrollo de estos ciclones","PeriodicalId":207115,"journal":{"name":"Anales Del Instituto De La Patagonia","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125608162","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}
Pub Date : 2017-11-01DOI: 10.4067/S0718-686X2017000200109
J. Cabello, Alejandro E. J. Valenzuela, Christopher B. Anderson
Biological invasions by mammals on islands have been identified as one of the main causes of global biodiversity loss, but research and management has been biased towards those species that are already in the final stage of the invasion. Therefore, it is necessary for managers and decision makers to keep updated on the biological invasion process of these species to implement conservation measures that also include introduction and expansion stages. In particular, it is important to prevent the initial invasion stages from going unnoticed, either due to the species’ biological characteristics, such as cryptic habits or low densities, but also social factors that could condition this bias, such as species that were introduced in one political jurisdiction and expanded to another whose authorities and scientists were unaware of the newly invaded area. We present new records about the expansion of the large hairy armadillo (Chaetophractus villosus), a native species in the Chilean and Argentine mainland, but an exotic on Tierra del Fuego Island (TDF), that allow us to alert a change to the expansion stage in this biological invasion process. The armadillo was introduced in the Argentine side of TDF in 1982, where it occupied a thin strip of the Atlantic coast between Río Grande city and San Sebastián Bay, and their burrows were highly associated with natural gas and oil pipelines. In 2014, the armadillo was classified, based on its ecological impacts, among the priority species for management; however to date we found no plan, project or legislation focused on controlling this species’ invasion. This work’s new records extend the armadillo’s distribution, on both the Argentine and Chilean sectors of TDF. We detected both natural dispersion and human transportation as possible causes and vectors of their expansion. This case again demonstrates the lack of a binational and socio-ecological perspective on the study and management of biological invasions, which has severe consequences for the conservation of native ecosystems. We highlight that this case has become a binational biological invasion process that should be quickly addressed together between the managers and decision makers of both countries.
{"title":"Avance en el proceso de la invasión biológica del peludo Chaetophractus villosus (Dasypodidae) en la Isla Grande de Tierra del Fuego: un nuevo desafío binacional","authors":"J. Cabello, Alejandro E. J. Valenzuela, Christopher B. Anderson","doi":"10.4067/S0718-686X2017000200109","DOIUrl":"https://doi.org/10.4067/S0718-686X2017000200109","url":null,"abstract":"Biological invasions by mammals on islands have been identified as one of the main causes of global biodiversity loss, but research and management has been biased towards those species that are already in the final stage of the invasion. Therefore, it is necessary for managers and decision makers to keep updated on the biological invasion process of these species to implement conservation measures that also include introduction and expansion stages. In particular, it is important to prevent the initial invasion stages from going unnoticed, either due to the species’ biological characteristics, such as cryptic habits or low densities, but also social factors that could condition this bias, such as species that were introduced in one political jurisdiction and expanded to another whose authorities and scientists were unaware of the newly invaded area. We present new records about the expansion of the large hairy armadillo (Chaetophractus villosus), a native species in the Chilean and Argentine mainland, but an exotic on Tierra del Fuego Island (TDF), that allow us to alert a change to the expansion stage in this biological invasion process. The armadillo was introduced in the Argentine side of TDF in 1982, where it occupied a thin strip of the Atlantic coast between Río Grande city and San Sebastián Bay, and their burrows were highly associated with natural gas and oil pipelines. In 2014, the armadillo was classified, based on its ecological impacts, among the priority species for management; however to date we found no plan, project or legislation focused on controlling this species’ invasion. This work’s new records extend the armadillo’s distribution, on both the Argentine and Chilean sectors of TDF. We detected both natural dispersion and human transportation as possible causes and vectors of their expansion. This case again demonstrates the lack of a binational and socio-ecological perspective on the study and management of biological invasions, which has severe consequences for the conservation of native ecosystems. We highlight that this case has become a binational biological invasion process that should be quickly addressed together between the managers and decision makers of both countries.","PeriodicalId":207115,"journal":{"name":"Anales Del Instituto De La Patagonia","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132136757","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}
Pub Date : 2017-11-01DOI: 10.4067/S0718-686X2017000200097
J. Rocca, Eduardo-I. Faundez
Leptoglossus concaviusculus Berg, 1892 is a leaf-footed bug distributed in Argentina, Brazil, Paraguay, and Uruguay. In this contribution, two teratological cases in L. concaviusculus are described. The first one is a simple oligomery in a male specimen, and the second belongs to a case of atrophy on a female specimen. Possible causes of the teratosis are discussed. It is also provided the first record of parasitism by Tachinidae (Diptera) on this species.
{"title":"Descripción de dos casos teratológicos en Leptoglossus concaviusculus Berg, 1892 (Heteroptera: Coreidae) de la Provincia de Río Negro, Argentina","authors":"J. Rocca, Eduardo-I. Faundez","doi":"10.4067/S0718-686X2017000200097","DOIUrl":"https://doi.org/10.4067/S0718-686X2017000200097","url":null,"abstract":"Leptoglossus concaviusculus Berg, 1892 is a leaf-footed bug distributed in Argentina, Brazil, Paraguay, and Uruguay. In this contribution, two teratological cases in L. concaviusculus are described. The first one is a simple oligomery in a male specimen, and the second belongs to a case of atrophy on a female specimen. Possible causes of the teratosis are discussed. It is also provided the first record of parasitism by Tachinidae (Diptera) on this species.","PeriodicalId":207115,"journal":{"name":"Anales Del Instituto De La Patagonia","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125060507","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}
Pub Date : 2017-11-01DOI: 10.4067/S0718-686X2017000200101
Giorgina Amalfitano, Romina Sandra Petrigh, Julia A. Loos, M. H. Fugassa
Fil: Amalfitano, Giorgina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales; Argentina
电线:阿马尔菲塔诺，乔吉纳。马德普拉塔国立大学。精确与自然科学学院;阿根廷
{"title":"Ampliación de los estudios parasitológicos en camélidos del sitio arqueológico Cerro Casa de Piedra 7, Santa Cruz, Argentina","authors":"Giorgina Amalfitano, Romina Sandra Petrigh, Julia A. Loos, M. H. Fugassa","doi":"10.4067/S0718-686X2017000200101","DOIUrl":"https://doi.org/10.4067/S0718-686X2017000200101","url":null,"abstract":"Fil: Amalfitano, Giorgina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales; Argentina","PeriodicalId":207115,"journal":{"name":"Anales Del Instituto De La Patagonia","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132417004","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}
Pub Date : 2017-11-01DOI: 10.4067/S0718-686X2017000200093
Máriom A. Carvajal, E. Faúndez, D. Rider
The nymphal instar V of Parajalla sanguineosignata (Spinola, 1852) is described. First formal records with specific locality data are given for Aysen and Magallanes Regions in Chile. San Gregorio becomes the southernmost locality known for this species.
{"title":"Contribution to the knowledge of Parajalla sanguineosignata (Spinola, 1852) (Heteroptera: Pentatomidae: Asopinae) in Patagonia","authors":"Máriom A. Carvajal, E. Faúndez, D. Rider","doi":"10.4067/S0718-686X2017000200093","DOIUrl":"https://doi.org/10.4067/S0718-686X2017000200093","url":null,"abstract":"The nymphal instar V of Parajalla sanguineosignata (Spinola, 1852) is described. First formal records with specific locality data are given for Aysen and Magallanes Regions in Chile. San Gregorio becomes the southernmost locality known for this species.","PeriodicalId":207115,"journal":{"name":"Anales Del Instituto De La Patagonia","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121590269","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}
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