Assessing the importance of prey, climate change, and human footprint for modeling current and future distribution of Leopardus guigna.

Species distribution models based solely on climatic variables are limited in their ability to predict future geographic ranges. One way to overcome this difficulty is to incorporate biological variables relevant to the focal species and variables representing the anthropogenic effect in the study area. Leopardus guigna (güiña) is a charismatic and threatened feline species of southern South America.

Photo-Selective Nets and Pest Control: Searching Behavior of the Codling Moth Parasitoid (Hymenoptera: Ichneumonidae) under Varying Light Quantity and Quality Conditions.

Photo-selective nets (PSN) are used to manipulate the physiology of fruit crops. Besides their advantages to the crop, PSN potentially affect insect pests and their natural enemies. We aimed to assess the effects of these production systems on the searching behavior of the codling moth parasitoid, .

Genetic signals of artificial and natural dispersal linked to colonization of South America by non-native Chinook salmon ().

Genetics data have provided unprecedented insights into evolutionary aspects of colonization by non-native populations. Yet, our understanding of how (human-mediated) and dispersal pathways of non-native individuals influence genetic metrics, evolution of genetic structure, and admixture remains elusive. We capitalize on the widespread colonization of Chinook salmon in South America, mediated by both dispersal pathways, to address these issues using data from a panel of polymorphic SNPs.

Contrasting genetic metrics and patterns among naturalized rainbow trout () in two Patagonian lakes differentially impacted by trout aquaculture.

Different pathways of propagation and dispersal of non-native species into new environments may have contrasting demographic and genetic impacts on established populations. Repeated introductions of rainbow trout () to Chile in South America, initially through stocking and later through aquaculture escapes, provide a unique setting to contrast these two pathways. Using a panel of single nucleotide polymorphisms, we found contrasting genetic metrics and patterns among naturalized trout in Lake Llanquihue, Chile's largest producer of salmonid smolts for nearly 50 years, and Lake Todos Los Santos (TLS), a reference lake where aquaculture has been prohibited by law.

Does silvoagropecuary landscape fragmentation affect the genetic diversity of the sigmodontine rodent ?

Background: Fragmentation of native forests is a highly visible result of human land-use throughout the world. In this study, we evaluated the effects of landscape fragmentation and matrix features on the genetic diversity and structure of the natural reservoir of Hantavirus in southern South America. We focused our work in the Valdivian Rainforest where human activities have produced strong change of natural habitats, with an important number of human cases of Hantavirus.

Temporal Genetic Variance and Propagule-Driven Genetic Structure Characterize Naturalized Rainbow Trout (Oncorhynchus mykiss) from a Patagonian Lake Impacted by Trout Farming.

Knowledge about the genetic underpinnings of invasions-a theme addressed by invasion genetics as a discipline-is still scarce amid well documented ecological impacts of non-native species on ecosystems of Patagonia in South America. One of the most invasive species in Patagonia's freshwater systems and elsewhere is rainbow trout (Oncorhynchus mykiss). This species was introduced to Chile during the early twentieth century for stocking and promoting recreational fishing; during the late twentieth century was reintroduced for farming purposes and is now naturalized.