Chabrolle, Laura; Ammar, Imen Ben; Fernandez, Marie S.A.; Boyer, Nicolas; Attia, Joël; Fonseca, Paulo João; Amorim, Maria Clara Pessoa; Beauchaud, Marilyn
Encontra-se informação suplementar disponível em: http://dx.doi.org/10.7717/
Dell’Ariccia, Gaia; Phillips, Richard A.; Franeker, Jan A. van; Gaidet, Nicolas; Catry, Paulo; Granadeiro, José Pedro; Ryan, Peter G.; Bonadonna, Francesco
In their recent paper, Savoca and collaborators (2016) showed that plastic debris in the ocean may acquire a
dimethyl sulfide (DMS) signature from biofouling developing on their surface. According to them, DMS emission
may represent an olfactory trap for foraging seabirds, which explains patterns of plastic ingestion among procellariiform
seabirds. This hypothesis is appealing, but some of the data that Savoca et al. used to support their
claim are questionable, resulting in a misclassification of species, as well as other decisions regarding the variables
to include in their models. Furthermore, with their focus on a single lifestyle trait (nesting habit) of dubious
relevance for explaining plastic...
Alves, Daniel; Amorim, Maria Clara Pessoa; Fonseca, Paulo Jorge
The active space of a signal is an important concept in acoustic
communication as it has implications for the function and evolution of
acoustic signals. However, it remains mostly unknown for fish as it
has been measured in only a restricted number of species. We
combined physiological and sound propagation approaches to
estimate the communication range of the Lusitanian toadfish’s
(Halobatrachus didactylus) advertisement sound, the boatwhistle
(BW). We recorded BWs at different distances from vocalizing fish
in a natural nesting site at ca. 2–3 m depth. We measured the
representation of these increasingly attenuated BWs in the auditory
pathway through the auditory evoked potential (AEP) technique.
These measurements point to a...
Campioni, Letizia; Granadeiro, José Pedro; Catry, Paulo
In long-lived species with delayed maturity, prebreeders are expected to gather information by visiting
and sampling the quality of potential nesting areas (prospecting), before they choose where to breed. In
most seabirds, this process is important because, once recruited, individuals generally remain sitefaithful
throughout their long reproductive life. As many seabirds are believed to display low levels of
natal dispersal, it is possible that natal philopatry is an obligate strategy for most individuals, with
prospecting being a negligible activity during the prebreeding stage. Using ringing information and GPS
technology, we tracked breeding adults and prebreeder black-browed albatrosses, Thalassarche melanophris,
from a colony of the Falkland Islands, during...
Chaves, Patrícia Alexandra Pereira; Valdoria, Ciara M.C.; Amorim, Maria Clara Pessoa; Vasconcelos, Raquel Ornelas
Studies addressing structure-function relationships of the fish auditory system during development are sparse compared to other taxa. The Batrachoididae has become an important group to investigate mechanisms of auditory plasticity and evolution of auditory-vocal systems. A recent study reported ontogenetic improvements in the inner ear saccule sensitivity of the Lusitanian toadfish, Halobatrachus didactylus, but whether this results from changes in the sensory morphology remains unknown. We investigated how the macula and organization of auditory receptors in the saccule and utricle change during growth in this species. Inner ear sensory epithelia were removed from the end organs of previously PFA-fixed specimens,...
Henriques, Mohamed; Lecoq, Miguel; Monteiro, Hamilton; Regalla, Aissa Said; Granadeiro, José Pedro; Catry, Paulo
Several studies have reported marked declines in populations of birds of prey across the African continent, including
West Africa. However, there are still regions of which virtually nothing is known, as is the case for Guinea-Bissau.
Because birds of prey play important roles in ecosystems and several species are threatened, it is important to
establish baseline knowledge on their status. This is the first study in the country focusing exclusively on birds of
prey. We conducted 1 711 km of roadside transects from mid-February to the end of May 2016, covering most of
Guinea-Bissau. In total 4 989 birds of 33 species were counted, of...
Carneiro, Camilo André Ferreira Carneiro; Henriques, Mohamed; Barbosa, Castro; Tchantchalam, Quintino; Regalla, Aissa Said; Patrício, Ana R.; Catry, Paulo
Populations of many vulture species have undergone substantial declines. In Africa, 82% are threatened and
although research on vultures has increased, the biology and ecology of several species is still poorly known. The
Palm-nut Vulture Gypohierax angolensis has peculiar ecological characteristics, feeding on palm fruits, associated
with the aquatic environment and taking a wide variety of prey. It has been over 40 years since the last thorough
study on the ecology of the species was undertaken. This study investigated several ecological and behavioural
aspects of Palm-nut Vultures, using a combination of direct observations, stable isotope analysis and Bayesian
mixing models. The population of this species within...
Wackermannova, Marie Anna; Horky, Pavel; Amorim, Maria Clara Pessoa; Fonseca, Paulo Jorge
Multimodal communication is essential in social
interactions in cichlid fish, including conspecifics’ recognition,
agonistic interactions and courtship behaviour.
Computer-manipulated image stimuli and sound playback offer
powerful tools to assess the relative relevance of visual and
acoustic stimuli in fish behavioural studies, but these techniques
require validation for each taxon. The aim of the present
study was to investigate whether Mozambique tilapia
Oreochromis mossambicus responds to computermanipulated
visual stimuli and acoustic playback. Six experiments
were conducted: computer animation playback, video
playback, interaction with a mirror, presentation of a live male
in a jar alone and combined with courting sound playback or
with white noise playback. Individual agonistic interactions
(lateral displays, up and down swimming, butting)...
Castilho, Rita; Silva, Gonçalo
The European anchovy has been the focus of numerous population genetic studies, most of which
exposing high levels of haplotype diversity. However, Keskin and Atar (2012) revealed rather singular
results of null haplotype diversities. We therefore call for caution when considering these findings.
Silva, Gonçalo; Cunha, Regina L.; Ramos, Ana; Castilho, Rita
A informação suplementar pode ser consultada no doi: 10.1038/s41598-017-02945-0
Fontoura, Paulo; Rubal, Marcos; Veiga, Puri
Two new species of Eutardigrada were found in supralittoral lichens, growing on rocky shores at two localities of the Western
Atlantic coast of the Iberian Peninsula. Ramazzottius littoreus sp. nov., found in San Cibrao (North of Spain), has the
dorsal cuticle sculptured with small tubercles and claws with accessory points similar to R. oberhaeuseri. It can be distinguished
from all the other known Ramazzottius species with the same type of cuticular sculpture by the dotted egg shell
and the peculiar reticulation visible at the bulbous base of egg processes. Macrobiotus halophilus sp. nov., found in Cascais
(Centre of Portugal), belongs to the Macrobiotus hufelandi group....
Patrício, Ana R.; Formia, Angela; Barbosa, Castro; Broderick, Annette C.; Bruford, Michael; Carreras, Carlos; Catry, Paulo; Ciofi, Claudio; Regalla, Aissa Said; Godley, Brendan John
Material suplementar disponível em: http://www.int-res.com/abstracts/meps/v569/p215-225/
Rodrigues, Diana Duarte; Costa, Bárbara Horta e; Cabral, Henrique; Gonçalves, Emanuel João
The complexity and diversity of physical and biotic
habitats are important features influencing the composition of
shallow water reef fish assemblages, especially in temperate
regions where abundant and diverse algal cover may have an
important habitat-forming role. Coastal fish have adapted to
these diverse habitats and to the temporal and spatial variations
of algal assemblages in different ways. Wrasses are an
important group of coastal rocky reef fish which present particular
associations to algae in temperate systems. In this
study, habitat associations were analysed in three species of
wrasses: Symphodus bailloni, Symphodus melops and
Symphodus roissali, and their behaviour was recorded. Eight
main behavioural categories (comprising a total of 42 different
Waap, Silke; Symondson, William O. C.; Granadeiro, José Pedro; Alonso, Hany Rafael de Drummond Ludovice Garcia; Gonçalves, Catarina Serra; Dias, Maria P.; Catry, Paulo
Existe informação suplementar disponível na versão online.
Castilho, Rita; Cunha, Regina L.; Faria, Cláudia Barreiros Macedo de; Velasco, Eva Maria; Robalo, Joana Isabel
Transition zones are of high evolutionary interest because unique patterns of spatial variation are often retained. Here, we investigated the phylogeography of the peacock blenny, Salaria pavo, a small marine intertidal fish that inhabits rocky habitats of the Mediterranean and the adjacent Atlantic Ocean. We screened 170 individuals using mitochondrial and nuclear sequence data from eight locations. Four models of genetic structure were tested: panmixia, isolation-by-distance, secondary contact and phylogeographic break. Results indicated clear asymmetric migration from the Mediterranean to the Atlantic but only marginally supported the isolation-by-distance model. Additionally, the species displays an imprint of demographic expansion compatible with...
Almada, Frederico; Carpi, Piera; Carlos, Fábio Ferreira; Francisco, Sara Martins; Faria, Ana Margarida; Lungu, Ruxanda; Coelho, Pedro Duarte; Neto, José; Gonçalves, Emanuel João; Robalo, Joana Isabel
A simple PCR-RFLP
consisting in the digestion of a fragment of the 12S ribosomal
RNA (12SrRNA) with species-specific
restriction enzymes (MboII and HinfI) was developed
to distinguish northeastern Atlantic species in the genus Atherina. Unambiguous
identification of morphologically similar sympatric species is frequently difficult, especially
when younger specimens are included in the analysis. Genetic and morphological
analysis of a total of 123 atherinids collected near the mouth of the Tagus estuary
(west Portugal) confirmed that only Atherina presbyter (sand smelt) adults and juveniles
are recurrently using these marine rocky habitats as spawning and nursery grounds,
respectively. The importance of applying non-destructive
methods is emphasized. In
the future, the conditions involved in the...
Lopes, Patrícia Rachinas; Luís, Ana Rita; Borges, Ana Sofia; Neto, Márcia P.; Santos, Manuel Eduardo dos
Common bottlenose dolphins (Tursiops trunca-tus) produce a range of underwater vocalizations, both pulsed (echolocation clicks and burst-pulses) and nonpulsed (whistles). Whistles may be emit-ted in stereotyped (signature) or variant patterns, and their production might be affected by sex, age, environmental, and social contexts. This study examined, non-intrusively, the whistle emissions of six captive bottlenose dolphins at Zoomarine in Algarve, Portugal, in two separate time sets and three different contexts: two of the animals in isolation in 2008, and all six in 2012, both seg-regated from their group and in social context. From a total of 1,681 whistles, 1,249 were ana-lyzed...
Dias, Ester; Morais, Pedro; Faria, Ana Margarida; Antunes, Carlos; Hoffman, Joel C.
Identifying nursery habitats is of paramount importance
to define proper management and conservation
strategies for flatfish species. Flatfish nursery
studies usually report upon habitat occupation, but
few attempted to quantify the importance of those
habitats to larvae development. The reliance of two
sympatric flatfish species larvae, the European flounder
Platichthys flesus and the common sole Solea
solea, on the estuarine food web (benthic versus
pelagic), was determined through carbon and nitrogen
stable isotope analysis. The organic matter
sources supporting the production of P. flesus and
S. solea larvae biomass originates chiefly in the benthic
food web. However, these species have significantly
different d13C and d15N values which suggest
that they prey on organisms that use...
Almada, Frederico; Francisco, Sara Martins; Lima, Cristina Silva; Fitzgerald, Richard; Mirimin, Luca; Villegas-Ríos, David; Saborido-Rey, Fran; Afonso, Pedro; Morato, Telmo; Bexiga, Sérgio; Robalo, Joana Isabel
Material suplementar, disponível online em: https://dx.doi.org/10.6084/m9.figshare.c.3683176.
Costa, Barbara Horta e; Claudet, Joachim; Franco, Gustavo; Erzini, Karim; Caro, Anthony; Gonçalves, Emanuel João
Dudley et al.  commented on our paper , arguing that the current IUCN objective-based categorization of
protected areas, which is also used in marine protected areas (MPAs), should not be abandoned and replaced by
the new regulation-based classification system . Here we clarify that we do not advocate replacing the
current IUCN categories, but highlight the benefits of using both the objective-based IUCN categories and the
new regulation-based classification when applied to MPAs. With an increasing number of MPA types being
implemented, most of them multiple-use areas zoned for various purposes, assessing ecological and socioeconomic
benefits is key for advancing conservation targets and policy objectives....