Cristian Correa

Cristian Correa
Universidad Austral de Chile · Instituto de Conservación Biodiversidad y Territorio

PhD

About

42
Publications
16,773
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1,863
Citations
Additional affiliations
January 2012 - present
McGill University
March 1995 - January 2001
Universidad Católica del Norte (Chile)

Publications

Publications (42)
Article
Full-text available
1. Rainbow (Oncorhynchus mykiss) and brown trout (Salmo trutta) are widespread and invasive salmonids with important lethal effects as predators, although indirect effects are also possible. We used stable isotope analyses (δ15N, δ13C) to explore how the density of invasive trout in 25 Patagonian lakes alters the trophic niche (TN) of a widespread...
Article
Full-text available
Significance Ecoevolutionary feedbacks on contemporary timescales were hypothesized over half a century ago, but only recently has evidence begun to emerge. The role that human activity plays in such dynamics is still unclear. Through a metaanalysis of >1,600 phenotypic changes in species across regions and ecosystem types, we examine the evidence...
Article
Full-text available
Invasive species have become widespread in aquatic environments throughout the world, yet there are few studies that have examined genomic variation of multiple introduced species in newly colonized environments. In this study we contrast genomic variation in two salmonid species (anadromous Chinook Salmon, Oncorhynchus tshawytscha, 11,579 SNPs and...
Article
Full-text available
Chinook salmon native to North America are spreading through South America’s Patagonia and have become the most widespread anadromous salmon invasion ever documented. To better understand the colonization history and role that genetic diversity might have played in the founding and radiation of these new populations, we characterized ancestry and g...
Article
1. The impacts of non-native species are hypothesised to be proportional to the functional distinctiveness of invaders in their invaded ecosystems. Throughout the Patagonia region of southern South America, Chinook salmon (Oncorhynchus tshawytscha) have recently established non-native populations, and their anadromous, semelparous life cycle could...
Raw Data
5,363 OCCURRENCES DATASET Chile alberga una rica diversidad de peces de agua dulce, caracterizados por su alto grado de endemismo y su importancia para los ecosistemas acuáticos del país. De las 44 especies conocidas, muchas son exclusivas de las aguas chilenas, lo que subraya la singularidad de la ictiofauna local. La situación de conservación de...
Article
Full-text available
In ecology and evolution, the small population paradigm posits that reduced genetic variation will result in limited phenotypic variation that, in turn, will affect population resilience and potential for adaptation. Over the last decade though, such a paradigm has been questioned, with evidence that mechanisms independent of genetic variation may...
Article
Research on the evolutionary ecology of urban areas reveals how human-induced evolutionary changes affect biodiversity and essential ecosystem services. In a rapidly urbanizing world imposing many selective pressures, a time-sensitive goal is to identify the emergent issues and research priorities that affect the ecology and evolution of species wi...
Article
Full-text available
In their native range, Pacific salmon (Oncorhynchus spp.) have strong interactions with a multitude of species due to the annual pulse of marine‐derived nutrients that they deliver to streams and forests when they spawn and die. Over the past few decades, Chinook salmon (Oncorhynchus tshawytscha) has established non‐native populations throughout th...
Article
Full-text available
Wild populations must continuously adapt to environmental changes or they risk extinction. Such adaptations can be measured as phenotypic rates of change and can allow us to predict patterns of contemporary evolutionary change. About two decades ago, a dataset of phenotypic rates of change in wild populations was compiled. Since then, researchers h...
Preprint
Full-text available
Wild populations must continuously adapt to environmental changes or they risk extinction. Such adaptations can be measured as phenotypic rates of change and can allow us to predict patterns of contemporary evolutionary change. About two decades ago, a dataset of phenotypic rates of change in wild populations was compiled. Since then, researchers h...
Chapter
Comparados con los extensos ecosistemas terrestres y marinos, los acotados ecosistemas dulceacuícolas albergan la mayor biodiversidad por unidad de área del planeta y, al mismo tiempo, estos ecosistemas y los organismos dulceacuícolas son los más amenazados. Por esto, es urgente identificar regiones prístinas y vulnerables para su oportuna protecci...
Article
Full-text available
Abstract Monitoring plans using environmental DNA have the potential to offer a standardized and cost‐efficient method to survey biodiversity in aquatic ecosystems. Among these ecosystems, coastal wetlands are key elements that serve as transition zones between marine and freshwater ecosystems and are today the target of many conservation and resto...
Article
The cover image is based on the Original Article Non‐native Chinook salmon add nutrient subsidies and functional novelty to Patagonian streams, by Nicolas J. Muñoz et al., https://doi.org/10.1111/fwb.13655.
Article
Full-text available
Cities are uniquely complex systems regulated by interactions and feedbacks between natural and social processes. Characteristics of human society – including culture, economics, technology, and politics – underlie social patterns and activity, creating a heterogeneous environment that can influence and be influenced by both ecological and evolutio...
Article
Full-text available
Coastal habitats in Chile are hypothesized to support a number of diadromous fish species. The objective of this study was to document migratory life histories of native galaxiids and introduced salmonids from a wide latitudinal range in Chilean Patagonia (39-48 • S). Otolith microchemistry data were analysed using a recursive partitioning approach...
Preprint
Full-text available
Compliance with Ethical Standards Otolith analysis was funded by a RAC grant from the University of New Mexico, USA. The Government of Chile supported the drafting of this document with a CONICYT Doctoral Fellowship to D. Alò in 2015 and to C. Correa through grants CONICYT-PAI N°82130009, and FONDECYT-Iniciación en la Investigación N°11150990. All...
Preprint
Full-text available
Chinook salmon native to North America are spreading through South America’s Patagonia and have become the most widespread anadromous salmon invasion ever documented. To better understand the colonization history and role that genetic diversity might have played in the founding and radiation of these new populations, we characterized ancestry and g...
Article
Cope's rule, wherein a lineage increases in body size through time, was originally motivated by macro-evolutionary patterns observed in the fossil record. More recently, some authors have argued that evidence exists for generally positive selection on individual body size in contemporary populations, providing a micro-evolutionary mechanism for Cop...
Article
Full-text available
Aplochiton is a small genus of galaxiid fishes endemic to Patagonia and the Falkland Islands whose taxonomy is insufficiently resolved. Recent genetic analyses confirmed the existence of only two closely related species, Aplochiton taeniatus and Aplochiton zebra, while a third controversial species, Aplochiton marinus, remained lost to synonymy wit...
Data
Distribution of pairwise distances for the COI barcode gene and automatic barcode gap discovery (ABGD) results. (A) Frequency distribution of K2P distances between haplotype pairs for the COI barcode gene. (B) ABGD results showing the number of groups obtained for a range of prior maximum divergence of intraspecific diversity. Dashed lines (A and B...
Data
R script to identify AT and AZ based on morphology. The script loads the heteroscedastic linear discriminant function described in this article (file HLDF.RData), reads a table with new morphological data provided by the user (the original data is provided as an example; file MorphoData.csv), and produces summary results, graphics, and a table with...
Data
Species delineation based on GMYC and bGMYC. The cladogram is the maximum clade credibility tree obtained from BEAST. Clades highlighted in red represent the maximum likelihood species limits from GMYC analysis. Results from the bGMYC method are presented in a haplotype-by-haplotype matrix where cells are color-coded based on the posterior probabil...
Article
Field work commonly involves preserving samples for later use; however, most preservation methods distort stable-isotope (SI) signatures that are of interest to ecologists. Although preservation of muscle samples with table salt and rubbing alcohol affected the SI (δ(13) C and δ(15) N) of important consumers in Patagonian lakes (molluscs and fishes...
Article
Full-text available
Salmonid fishes, native to the northern hemisphere, have become naturalized in many austral countries and appear linked to the decline of native fishes, particularly galaxiids. However, a lack of baseline information and the potential for confounding anthropogenic stressors have led to uncertainty regarding the association between salmonid invasion...
Article
Full-text available
Human-induced trait change has been documented in freshwater, marine, and terrestrial ecosystems worldwide. These trait changes are driven by phenotypic plasticity and contemporary evolution. While efforts to manage human-induced trait change are beginning to receive some attention, managing its ecological consequences has received virtually none....
Article
Full-text available
Aim: The abundant-centre hypothesis (ACH) is based on the assumption that physiological constraints limit populations at the edges of their distributional range, yet the geographical variation of physiological performance or life-history traits has rarely been examined. Here we examine the applicability of the ACH in a marine system by testing whet...
Article
Full-text available
Questions: Do evolutionary changes in the levels of phenotypic plasticity occur after anthropogenic disturbance? Do these changes tend to be increases or decreases in plasticity? How do these evolutionary patterns differ among taxa and trait types? Does plasticity evolution change with time since the disturbance? Data incorporated: Evolutionary rat...
Article
Full-text available
We document the invasion of Chinook salmon (Oncorhynchus tshawytscha) to southern South America providing historical, current and future perspectives. We conducted field sampling, angler surveys, and analyzed all written records, and found evidence of reproductive populations in more than ten Andean (and many more coastal) watersheds draining mainl...
Article
Full-text available
The dynamics of male-male competition for mates and patterns of female choice depend critically on the social environment. We released newly molted sexually receptive females of the rock shrimp Rhynchocinetes typus in the field and recorded their interactions with males. In the dense aggregations in which these shrimp live, most females were encoun...
Article
The ratio of sexually active males to fertilizable females (operational sex ratio, OSR) is the most important parameter determining the direction and intensity of sexual selection. It is widely accepted that the pronounced sexual dimorphism featured by many crustaceans is a consequence of a strongly male-biased OSR. Many studies have contributed to...
Article
Full-text available
In this paper we review functional and evolutionary relationships among mating systems of caridean shrimp and specific traits such as general biology/ecology, sexual systems, behavior and morphology. Four mating systems are described based on reports from available literature, and a fifth system is recognized but published information is insufficie...
Article
Full-text available
In this paper we review functional and evolutionary relationships among mating systems of caridean shrimp and specific traits such as general biology/ecology, sexual systems, behavior and morphology. Four mating systems are described based on reports from available literature, and a fifth system is recognized but published information is insufficie...
Article
During ontogeny, male rock shrimp Rhynchocinetes typus develop from the typus morphotype through several intermedius stages to the robustus morphotype, the last molt stage, which features powerful third maxillipeds and chelae. In a competition-free environment, all male stages mate in a similar manner. They guard females for 23 min to 3 h and perfo...
Article
The mating behavior and fertilization capacity of three different ontogenetic stages of male rock shrimp Rhynchocinetes typus were examined. The first ontogenetic stage is the typus morphotype, which is similar in morphology to the female. The last ontogenetic stage, the robustus morphotype, is characterized by extremely long third maxillipeds and...

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