Eduardo Sampaio

Eduardo Sampaio
Max Planck Institute of Animal Behavior

About

39
Publications
12,812
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
429
Citations
Introduction
I am currently researching behaviour, cognition and neural functioning of cephalopods, in particular, octopus species. I have a general background on species ecology, behavior, physiology and community trophic interactions in natural conditions, as well as under climate change scenarios.
Additional affiliations
September 2017 - September 2021
University of Lisbon
Position
  • PhD Student
March 2015 - January 2016
Instituto Português do Mar e da Atmosfera
Position
  • PhD Student
March 2014 - February 2015
University of the Azores
Position
  • PhD Student

Publications

Publications (39)
Article
Full-text available
Learning can occur through self-experience with the environment, or through the observation of others. The latter allows for adaptive behaviour without trial-and-error, thus maximizing individual fitness. Perhaps given their mostly solitary lifestyle, cuttlefish have seldomly been tested under observational learning scenarios. Here we used a multi-...
Article
Full-text available
Cooperation is ubiquitous in nature, and occurs at all levels of biological complexity, providing immediate direct benefits and/or future indirect benefits to participating partners (Lehmann and Keller 2006, Bshary and Bergmüller 2008).
Article
Full-text available
Over the past decades, three major challenges to marine life have emerged as a consequence of anthropogenic emissions: ocean warming, acidification and oxygen loss. While most experimental research has targeted the first two stressors, the last remains comparatively neglected. Here, we implemented sequential hierarchical mixed-model meta-analyses (...
Article
Full-text available
Reproductive fitness is defined by the successful passing of an individual’s genes to the next generation. Cephalopods that mate in groups, in particular coastal squid and cuttlefish species, have evolved complex sexual tactics in order to maximize reproductive success (Morse and Huffard 2019). Through dynamic skin patterning accompanied by typical...
Article
Full-text available
Despite the long evolutionary history of this group, the challenges brought by the Anthropocene have been inflicting an extensive pressure over sharks and their relatives. Overexploitation has been driving a worldwide decline in elasmobranch populations, and rapid environmental change, triggered by anthropogenic activities, may further test this gr...
Article
The European eel (Anguilla anguilla) has attracted scientific inquiry for centuries due to its singular biological traits. Within the European Union, glass eel fisheries have declined sharply since 1980, from up to 2000 t (t) to 62.2 t in 2018, placing wild populations under higher risk of extinction. Among the major causes of glass eels collapse,...
Article
Full-text available
Ocean acidification is a consequence of chemical changes driven mainly by a continuous uptake of carbon dioxide, resulting in pH decrease. This phenomenon represents an additional threat to marine life, with expected effects ranging from changes in behavioral responses and calcification rates to the potential promotion of oxidative stress. To unrav...
Article
As Earth’s temperature continues to rise, sudden warming events, designated as marine heatwaves (MHWs), are becoming more frequent and longer. This phenomenon is already shown to significantly impact marine ecosystems and respective fauna. While experimental acclimation to higher temperatures is known to affect predatory behavior, metabolism and ov...
Article
Full-text available
The oceanic uptake of carbon dioxide (CO2) is increasing and changing the seawater chemistry, a phenomenon known as ocean acidification (OA). Besides the expected physiological impairments, there is an increasing evidence of detrimental OA effects on the behavioral ecology of certain marine taxa, including cephalopods. Within this context, the main...
Article
The dramatic decline of European eel (Anguilla anguilla) populations over recent decades has attracted considerable attention and concern. Furthermore, little is known about the sensitivity of the early stages of eels to projected future environmental change. Here, we investigated, for the first time, the potential combined effects of ocean warming...
Article
The dramatic decline of European eel (Anguilla anguilla) populations over recent decades has attracted considerable attention and concern. Furthermore, little is known about the sensitivity of the early stages of eels to projected future environmental change. Here, we investigated, for the first time, the potential combined effects of ocean warming...
Article
Tetracosapolyenoic fatty acids (TPA), namely tetracosapentaenoic (24:5n-6) and tetracosahexaenoic (24:6n-3) acids, are chemotaxonomic biomarkers of octocorals (Cnidaria, Octocorallia) in the marine environment. The present study confirms the occurrence of TPA on a marine non-cnidarian taxon, the nudibranch mollusc Armina maculata. This discovery is...
Article
Full-text available
Cabo Verde is a unique biogeographical region, where by mixing temperate and tropical characteristics an unusually high number of endemic species are reported. Cephalopods are central pieces of trophic networks worldwide, interacting as predator/ prey and competing with fish for ecological niches. We aimed to assess how the topography, prey availab...
Article
Atmospheric carbon dioxide (CO2) levels are increasing at the fastest rate ever recorded, causing higher CO2 dissolution in the ocean, leading to a process known as ocean acidification (OA). Unless anthropogenic CO2 emissions are reduced, they are expected to reach ~900 ppm by the century's end, resulting in a 0.13–0.42 drop in the seawater pH leve...
Article
Full-text available
Despite its worldwide distribution and vulnerable status, knowledge on the biology and ecology of the smooth hammerhead Sphyrna zygaena in the temperate NE Atlantic is very scarce. Here, we reveal intra-annual fluctuations in S. zygaena abundance in the Portuguese southwestern coast, using sightings data collected on board whale watching boats over...
Article
Ocean acidification (OA) has been shown to disrupt behavioural responses either by affecting metabolic processes, or by effectively impairing an organisms' ability to gather and assess information and make decisions. Given the lack of information regarding the effects of high CO2 on olfactory-mediated mating behaviours in crustaceans, the possible...
Article
Sharks have maintained a key role in marine food webs for 400 million years and across varying physicochemical contexts, suggesting plasticity to environmental change. In this study, we investigated the biochemical effects of ocean acidification (OA) levels predicted for 2100 (pCO2 ~ 900 μatm) on newly hatched tropical whitespotted bamboo sharks (C...
Article
Increases in carbon dioxide (CO 2) and other greenhouse gases emissions are changing ocean temperature and carbonate chemistry (warming and acidification, respectively). Moreover, the simultaneous occurrence of highly toxic and persistent contaminants, such as methylmercury, will play a key role in further shaping the ecophysi-ology of marine organ...
Article
Full-text available
Ocean acidification is a direct consequence of carbon dioxide (CO2) dissolution in seawater and has the potential to impact marine phytoplankton. Although community composition and species interactions may be affected, few studies have taken the latter into account. Here, we assessed how species interactions and competition shape physiological resp...
Article
Full-text available
Cephalopods are the sole invertebrates included in the list of regulated species following the Directive 2010/63/EU. According to the Directive, achieving competence through adequate training is a requisite for people having a role in the different functions (article 23) as such carrying out procedures on animals, designing procedures and projects,...
Article
Full-text available
Increases in carbon dioxide (CO2) and other greenhouse gases emissions are leading to changes in ocean temperature and carbonate chemistry, the so-called ocean warming and acidification phenomena, respectively. Methylmercury (MeHg) is the most abundant form of mercury (Hg), well-known for its toxic effects on biota and environmental persistency. De...
Article
Full-text available
Due to inaccurate terminology, the word “acid” should be replaced by “hypercapnic” in the title. Moreover, in order to comply with SI unit standards, pCO2 units across the manuscript should be read as “µatm”, instead of “ppm”.
Article
Full-text available
Anthropogenic release of greenhouse gases is leading to significant changes in ocean physicochemical properties. Although marine organisms will have to deal with combined effects of ocean warming and acidification, little is known about the impact of interactions between these climate change variables and contaminants. Nowadays, mercury emissions a...
Conference Paper
Full-text available
In the future, continuous rise in the levels of atmospheric CO2, along with concomitant increases in temperatures, will lead to alterations in global climate with consequent effects on marine ecosystems. By regulating top-down in a critical trophic level, macroalgae-herbivore interactions play a key role in shaping marine community structures. Taki...
Conference Paper
Full-text available
Due to increasing concentration of CO2 levels, marine organisms will have to cope with combined effects of ocean warming and acidification, in the near future. Although many studies have focused on this subject, little is known about the impact on marine life of interactions between the referred climate change variables and contaminants. Methylmerc...
Article
Full-text available
Sharks occupy high trophic levels in marine habitats and play a key role in the structure and function of marine communities. Their populations have been declining worldwide by ≥90 %, and their adaptive potential to future ocean conditions is believed to be limiting. Here we experimentally exposed recently hatched bamboo shark (Chiloscyllium puncta...
Article
Full-text available
Little empirical information is currently available on the potential effects of acidification and/or warming in sharks, but none exist about digestive capabilities under such future conditions. Here, we investigated the impact of both acidification (ΔpH = 0.5) and warming (+4; 30 °C) on the digestive enzyme levels of recently hatched tropical bambo...
Article
Full-text available
Maslinic acid, a natural triterpene, was evaluated as a dietary supplement to modulate glycogen post-mortem mobilization in gilthead seabream muscle. For this purpose, a multidisciplinary trial was undertaken, where flesh quality criteria, as well as biochemical and histological parameters, enzymatic activities and protein expression in the muscle...
Article
Full-text available
The quality and shelf life of fish meat products depend on the skeletal muscle's energetic state at slaughter, as meat decomposition processes can be exacerbated by energy depletion. In this study, we tested dietary glycerol as a way of replenishing muscle glycogen reserves of farmed gilthead seabream. Two diets were tested in duplicate (n = 42/tan...

Network

Cited By

Projects

Project (1)
Project
Assessment of the combined effects of global climate change and priority neurotoxicants in the early ontogeny of the European Eel (Anguilla anguilla) and other ecologically relevant invertebrate taxa