RITA CASTILHO results 29
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Opportunistic data for assessing abundance and site fidelity of fin whales (Balaenoptera physalus) in the Faro area, PortugalNARA Subscribed
The distribution and migration of fin whales ( Balaenoptera physalus ) remain poorly understood in parts of the North Atlantic. One of these regions is the Algarve in southern Portugal, which is shaped by seasonal upwelling and the exchange of Atlantic and Mediterranean waters. This area represents a potentially critical yet poorly understood habitat for this species. This study presents the first comprehensive assessment of f...
Ecology and Seasonal Habitat Use of Northern Bottlenose and Sowerby's Beaked Whales in the AzoresNARA Subscribed
Beaked whales are among the least known cetaceans, yet they are regularly observed in the Azores, a region recognized as a hotspot for deep‐diving species. In this study, we analyzed opportunistic sightings collected during 1492 whale‐watching trips, including 149 beaked whale encounters, of which 89 were Sowerby's ( Mesoplodon bidens ) and 31 northern bottlenose whales ( Hyperoodon ampullatus ). Our results reveal a clear sea...
Sex‐Linked Differentiation in Commercially Exploited Fishes: Rethinking Population Structure in Dynamic Marine EnvironmentsNARA Subscribed
Understanding how genomic structure links with ecological and evolutionary processes is critical for forecasting species responses to dynamic marine environments, especially in commercially exploited marine species, where fishing pressure can impact genomic integrity. Here we investigate Merluccius paradoxus , a commercially exploited demersal fish that appears to be undergoing a range expansion along the southern African coas...
The spatial distribution of the European anchovy has expanded in the northern part of its range in the Northeast Atlantic in recent decades. However, whether this results from a northward range shift of southern conspecifics or the expansion of a local northern population is unknown. Using for the first time whole‐genome sequencing, we explore current patterns of genetic diversity and population sub‐structuring of European anc...
Camera trap surveys of A tlantic F orest mammals: A data set for analyses considering imperfect detection (2004–2020)NARA Subscribed
Camera traps became the main observational method of a myriad of species over large areas. Data sets from camera traps can be used to describe the patterns and monitor the occupancy, abundance, and richness of wildlife, essential information for conservation in times of rapid climate and land‐cover changes. Habitat loss and poaching are responsible for historical population losses of mammals in the Atlantic Forest biodiversity...
Perceived social benefits and drawbacks of sea turtle conservation efforts in a globally important sea turtle rookeryNARA Subscribed
Conservation interventions have wide-ranging social impacts - both positive and negative. Yet a limited understanding of how conservation initiatives affect people’s livelihoods often hinders our ability to learn from past efforts and design more effective and equitable conservation measures. This is particularly needed when there is a high degree of overlap between critical habitats and human activities or a high cultural and...
Mammalian carnivores are considered a key group in maintaining ecological health and can indicate potential ecological integrity in landscapes where they occur. Carnivores also hold high conservation value and their habitat requirements can guide management and conservation plans. The order Carnivora has 84 species from 8 families in the Neotropical region: Canidae; Felidae; Mephitidae; Mustelidae; Otariidae; Phocidae; Procyon...
NEOTROPICAL ALIEN MAMMALS: a data set of occurrence and abundance of alien mammals in the NeotropicsNARA Subscribed
Biological invasion is one of the main threats to native biodiversity. For a species to become invasive, it must be voluntarily or involuntarily introduced by humans into a nonnative habitat. Mammals were among first taxa to be introduced worldwide for game, meat, and labor, yet the number of species introduced in the Neotropics remains unknown. In this data set, we make available occurrence and abundance data on mammal specie...
NEOTROPICAL XENARTHRANS: a data set of occurrence of xenarthran species in the NeotropicsNARA Subscribed
Xenarthrans—anteaters, sloths, and armadillos—have essential functions for ecosystem maintenance, such as insect control and nutrient cycling, playing key roles as ecosystem engineers. Because of habitat loss and fragmentation, hunting pressure, and conflicts with domestic dogs, these species have been threatened locally, regionally, or even across their full distribution ranges. The Neotropics harbor 21 species of armadillos,...
Fuzzy species limits in Mediterranean gorgonians (Cnidaria, Octocorallia): inferences on speciation processesNARA Subscribed
The study of the interplay between speciation and hybridization is of primary importance in evolutionary biology. Octocorals are ecologically important species whose shallow phylogenetic relationships often remain to be studied. In the Mediterranean Sea, three congeneric octocorals can be observed in sympatry: Eunicella verrucosa, Eunicella cavolini and Eunicella singularis . They display morphological differences and E. singu...
Anchovies go north and west without losing diversity: post‐glacial range expansions in a small pelagic fishNARA Subscribed
Aim As part of an emerging effort to understand the role played by climatic fluctuations in shaping the geographical distributions and abundances of marine organisms, we examined the genetic patterns of leading‐edge populations in the European anchovy, Engraulis encrasicolus , and its American counterpart, the morphologically similar silver anchovy, Engraulis eurystole , in the North Atlantic Ocean. Location Adults were collec...