Catarina Eira

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Characterization of the cardiac phospholipidome of small cetaceans provides adaptational insight and a foundation for indirect population health screening

João P. Monteiro, Elisabete Maciel, Rita Maia, Andreia T. Pereira, more

Marine Mammal Science > 37 > 4 > 1406 - 1427

The maintenance of a tightly regulated heart lipidome is a general hallmark of mammal health. However, in the case of cetaceans, heart tissue lipid composition remains obscure. This work represents a first in‐depth state‐of‐the‐art characterization of the lipid content of small cetacean hearts, namely those of Delphinus delphis, Phocoena phocoena, and Stenella coeruleoalba. Phospholipid classes identified...

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Mercury, Lead and Cadmium Concentrations in Talpa occidentalis and in Their Digeneans of the Genus Ityogonimus

Roser Adalid, Jordi Torres, Marcos Miñarro, Jordi Miquel, more

Acta Parasitologica > 2019 > 64 > 3 > 464-470

Introduction Many parasites living in aquatic ecosystems are useful indicators of environmental health. On the other hand, information is scarcer with respect to the use of helminth parasites of vertebrates living in terrestrial ecosystems as monitoring tools for toxic element environmental pollution. The present study evaluates the suitability of the model Talpa occidentalis/Ityogonimus spp. as a...

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Trace elements in loggerhead turtles (Caretta caretta) stranded in mainland Portugal: Bioaccumulation and tissue distribution

Lídia Nicolau, Sílvia S. Monteiro, Andreia T. Pereira, Ana Marçalo, more

Chemosphere > 2017 > 179 > C > 120-126

Pollution is among the most significant threats that endanger sea turtles worldwide. Waters off the Portuguese mainland are acknowledged as important feeding grounds for juvenile loggerheads. However, there is no data on trace element concentrations in marine turtles occurring in these waters. We present the first assessment of trace element concentrations in loggerhead turtles (Caretta caretta) occurring...

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Spatial colonization by feral domestic catsFelis catus of former wildcatFelis silvestris silvestris home ranges

Pedro Sarmento, Joana Cruz, Catarina Eira, Carlos Fonseca

Mammal Research > 2009 > 54 > 1 > 31-38

Presently, wildcatFelis silvestris silvestris Schreber, 1777 populations are fragmented and rapidly declining in most of Europe. Although habitat destruction possibly constitutes the most serious threat to wildcat survival, hybridisation with feral domestic cats is also a critical problem. However, the mechanisms that allow domestic cats to colonise former wild cat home ranges are yet unclear. The...

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The importance of Portuguese Continental Shelf Waters to Balearic Shearwaters revealed by aerial census

Hélder Araújo, Jorge Bastos-Santos, Pedro Correia Rodrigues, Marisa Ferreira, more

Marine Biology > 2017 > 164 > 3 > 1-14

The Balearic shearwater Puffinus mauretanicus is one of the most threatened seabirds in the world. To evaluate the abundance and distribution of Balearic Shearwaters in Portuguese Continental Shelf Waters, during the post-breeding period when migrating birds are outside the Mediterranean Sea, we conducted 5 aerial surveys between 2010 and 2014 (21 survey days covering 62,716 km²). Following a line...

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The microbiome of a striped dolphin (Stenella coeruleoalba) stranded in Portugal

Filipa Godoy-Vitorino, Arnold Rodriguez-Hilario, Ana Luísa Alves, Filipa Gonçalves, more

Research in Microbiology > 2017 > 168 > 1 > 85-93

Infectious diseases with epizootic consequences have not been fully studied in marine mammals. Presently, the unprecedented depth of sequencing, made available by high-throughput approaches, allows detailed comparisons of the microbiome in health and disease. This is the first report of the striped dolphin microbiome in different body sites. Samples from one striped female edematous dolphin were acquired...

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Bioaccumulation of trace element concentrations in common dolphins (Delphinus delphis) from Portugal

Sílvia S. Monteiro, Andreia T. Pereira, Élia Costa, Jordi Torres, more

Marine Pollution Bulletin > 2016 > 113 > 1-2 > 400-407

The common dolphin (Delphinus delphis) is one of the most abundant species in Atlantic Iberia, representing a potentially important tool to assess the bioaccumulation of trace elements in the Iberian marine ecosystem. Nine elements (As, Cd, Cu, Hg, Mn, Ni, Pb, Se and Zn) were evaluated in 36 dolphins stranded in continental Portugal. Dolphins had increasing Hg concentrations (16.72μg·g⁻¹ ww, liver)...

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Spatial distribution of floating marine debris in offshore continental Portuguese waters

Sara Sá, Jorge Bastos-Santos, Hélder Araújo, Marisa Ferreira, more

Marine Pollution Bulletin > 2016 > 104 > 1-2 > 269-278

This study presents data on abundance and density of macro-floating marine debris (FMD), including their composition, spatial distribution and potential sources off continental Portugal. FMD were assessed by shipboard visual surveys covering ±252,833km² until the 220nm limit. The FMD average density was 2.98items/km² and abundance amounted to 752,740 items. Unidentified plastics constitute the major...

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Biological variables and health status affecting inorganic element concentrations in harbour porpoises (Phocoena phocoena) from Portugal (western Iberian Peninsula)

Marisa Ferreira, Silvia S. Monteiro, Jordi Torres, Isabel Oliveira, more

Environmental Pollution > 2016 > 210 > C > 293-302

The coastal preferences of harbour porpoise (Phocoena phocoena) intensify their exposure to human activities. The harbour porpoise Iberian population is presently very small and information about the threats it endures is vital for the conservation efforts that are being implemented to avoid local extinction. The present study explored the possible relation between the accumulation of trace elements...

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Ecological variables influencing trace element concentrations in bottlenose dolphins (Tursiops truncatus, Montagu 1821) stranded in continental Portugal

Sílvia S. Monteiro, Jordi Torres, Marisa Ferreira, Ana Marçalo, more

Science of The Total Environment > 2016 > 544 > C > 837-844

Both the conservation status of bottlenose dolphins (Tursiops truncatus) (Habitats Directive 92/43/CEE, Annex II) and the Marine Strategy Framework Directive demand for data on their ecology and anthropogenic threats. To evaluate the bottlenose dolphin's toxicological status in continental Portugal, several trace elements (As, Cd, Cu, Hg, Mn, Ni, Pb, Se, Zn) were determined in 25 stranded individuals...

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Ingestion of marine litter by loggerhead sea turtles, Caretta caretta, in Portuguese continental waters

Lídia Nicolau, Ana Marçalo, Marisa Ferreira, Sara Sá, more

Marine Pollution Bulletin > 2016 > 103 > 1-2 > 179-185

The accumulation of litter in marine and coastal environments is a major threat to marine life. Data on marine litter in the gastrointestinal tract of stranded loggerhead turtles, Caretta caretta, found along the Portuguese continental coast was presented. Out of the 95 analysed loggerheads, litter was present in 56 individuals (59.0%) and most had less than 10 litter items (76.8%) and less than 5g...

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Sea turtle strandings along the Portuguese mainland coast: spatio-temporal occurrence and main threats

Lídia Nicolau, Marisa Ferreira, Jorge Santos, Hélder Araújo, more

Marine Biology > 2016 > 163 > 1 > 1-13

The present study is a detailed analysis of sea turtle strandings over a 36-year period (1978–2013) along the Portuguese mainland coast. Out of the 806 stranded individuals, the loggerhead turtle Caretta caretta was the most frequent species (57.1 %) followed by the leatherback turtle Dermochelys coriacea (41.8 %), while green turtles Chelonia mydas and Kemp’s Ridley turtles Lepidochelys kempii were...

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Total mercury and selenium concentrations in Sarpa salpa and Balistes capriscus and in their respective Digenean endoparasites Robphildollfusium fractum and Neoapocreadium chabaudi from Tunisia

Jordi Torres, Hichem Kacem, Catarina Eira, Lassad Neifar, more

Acta Parasitologica > 2014 > 59 > 4 > 580-585

The present study reports the levels of mercury and selenium in Sarpa salpa and Balistes capriscus collected along the coast of Mahdia and Sfax (Tunisia). The systems constituted by S. salpa and Robphildollfusium fractum and by B. capriscus and Neoapocreadium chabaudi were tested as potential bioindicators to monitor environmental Hg pollution in marine ecosystems. Mercury and selenium concentrations...

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Brachycoelium salamandrae (Frölich, 1789) (Digenea: Brachycoeliidae): Ultrastructural study of spermiogenesis and the mature spermatozoon

Abdoulaye J.S. Bakhoum, Alexis Ribas, Catarina Eira, Cheikh Tidiane Bâ, more

Zoologischer Anzeiger - A Journal of Comparative Zoology > 2013 > 252 > 2 > 149-156

Ultrastructural characters of spermiogenesis and the mature spermatozoon of Brachycoelium salamandrae are described by means of transmission electron microscopy. Spermiogenesis begins with the formation of a differentiation zone containing a nucleus, several mitochondria, and two centrioles associated with striated rootlets and with an intercentriolar body between them. The two centrioles originate...

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The system Tetrabothrius bassani (Tetrabothriidae)/Morus bassanus (Sulidae) as a bioindicator of marine heavy metal pollution

Paula Mendes, Catarina Eira, José Vingada, Jordi Miquel, more

Acta Parasitologica > 2013 > 58 > 1 > 21-25

Helminths are known to accumulate higher amounts of certain elements than their hosts. The present study assesses the accumulation of heavy metals in Tetrabothrius bassani and in its host, the Atlantic gannet (Morus bassanus) found dead due to bycatch along the seashore in the centre of Portugal. Samples of kidney, liver and pectoral muscle of 23 infected gannets, as well as specimens of T. bassani...

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Ultrastructural characters of the spermatozoon of the digenean Hypocreadium caputvadum Kacem et al., 2011 (Lepocreadioidea: Lepocreadiidae), an intestinal parasite of Balistes capriscus in Tunisia

Hichem Kacem, Abdoulaye J.S. Bakhoum, Catarina Eira, Lassad Neifar, more

Comptes rendus - Biologies > 2012 > 335 > 10-11 > 637-644

The ultrastructural organization of the spermatozoon of the digenean Hypocreadium caputvadum (Lepocreadioidea: Lepocreadiidae) is described. Live digeneans were collected from Balistes capriscus (Teleostei: Balistidae) from the Gulf of Gabès, Tunisia (Eastern Mediterranean Sea). The mature spermatozoon of H. caputvadum shows several ultrastructural characters such as two axonemes of different lengths...

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Occupancy, colonization and extinction patterns of rabbit populations: implications for Iberian lynx conservation

Pedro Sarmento, Joana Cruz, Anabela Paula, Catarina Eira, more

European Journal of Wildlife Research > 2012 > 58 > 3 > 523-533

In Mediterranean ecosystems, rabbits are a key prey species for many predators, such as the Iberian lynx, which is threatened with extinction and has gone extinct locally in several regions of its historical distribution range. One of these regions is Serra da Malcata Nature Reserve, Portugal, which is also currently proposed as a potential site for reintroduction. We intended to investigate annual...

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Cadmium and lead concentrations in Moniliformis moniliformis (Acanthocephala) and Rodentolepis microstoma (Cestoda), and in their definitive hosts, Rattus rattus and Mus domesticus in El Hierro (Canary Archipelago, Spain)

Jordi Torres, Catarina Eira, Jordi Miquel, Pilar Foronda, more

Acta Parasitologica > 2011 > 56 > 3 > 320-324

Information on parasites of vertebrates living in terrestrial ecosystems as monitoring tools for heavy metal environmental pollution is scarce. The present study evaluates the potential suitability of the models Rattus rattus/Moniliformis moniliformis and Mus domesticus/Rodentolepis microstoma as promising bioindicator systems for cadmium and lead pollutions under natural conditions. The highest level...

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Spermatological characters of Acanthobothrium crassicolle Wedl, 1855 (Tetraphyllidea, Onchobothriidae), a parasite of the common stingray Dasyatis pastinaca

Adji Mama Marigo, Catarina Eira, Cheikh Tidiane Bâ, Jordi Miquel

Acta Parasitologica > 2011 > 56 > 2 > 191-201

We describe the spermiogenesis process and the ultrastructural characters of the spermatozoon of Acanthobothrium crassicolle by means of transmission electron microscopy, including cytochemical analysis for glycogen. Spermiogenesis in A. crassicolle begins with the formation of the differentiation zone that contains two centrioles associated with striated rootlets and an intercentriolar body. The...

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Ultrastructural and cytochemical study on vitellogenesis in the diphyllidean cestode Echinobothrium euterpes (Echinobothriidae) and its phylogenetical implications

Zdzisław Świderski, John S. Mackiewicz, Catarina Eira, Jordi Miquel

Acta Parasitologica > 2011 > 56 > 2 > 180-190

The first description of vitellogenesis in the Diphyllidea is presented in this paper. Though the type of vitellogenesis and mature vitellocyte in Echinobothrium euterpes appear to be unique among the Eucestoda, however, they somewhat resemble that observed in the two orders of the lower cestodes, Tetraphyllidea and Proteocephalidea. Vitellocyte maturation is characterized by: (1) an increase in cell...

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Search results for: Catarina Eira

Characterization of the cardiac phospholipidome of small cetaceans provides adaptational insight and a foundation for indirect population health screening

Mercury, Lead and Cadmium Concentrations in Talpa occidentalis and in Their Digeneans of the Genus Ityogonimus

Trace elements in loggerhead turtles (Caretta caretta) stranded in mainland Portugal: Bioaccumulation and tissue distribution

Spatial colonization by feral domestic catsFelis catus of former wildcatFelis silvestris silvestris home ranges

The importance of Portuguese Continental Shelf Waters to Balearic Shearwaters revealed by aerial census

The microbiome of a striped dolphin (Stenella coeruleoalba) stranded in Portugal

Bioaccumulation of trace element concentrations in common dolphins (Delphinus delphis) from Portugal

Spatial distribution of floating marine debris in offshore continental Portuguese waters

Biological variables and health status affecting inorganic element concentrations in harbour porpoises (Phocoena phocoena) from Portugal (western Iberian Peninsula)

Ecological variables influencing trace element concentrations in bottlenose dolphins (Tursiops truncatus, Montagu 1821) stranded in continental Portugal

Ingestion of marine litter by loggerhead sea turtles, Caretta caretta, in Portuguese continental waters

Sea turtle strandings along the Portuguese mainland coast: spatio-temporal occurrence and main threats

Total mercury and selenium concentrations in Sarpa salpa and Balistes capriscus and in their respective Digenean endoparasites Robphildollfusium fractum and Neoapocreadium chabaudi from Tunisia

Brachycoelium salamandrae (Frölich, 1789) (Digenea: Brachycoeliidae): Ultrastructural study of spermiogenesis and the mature spermatozoon

The system Tetrabothrius bassani (Tetrabothriidae)/Morus bassanus (Sulidae) as a bioindicator of marine heavy metal pollution

Ultrastructural characters of the spermatozoon of the digenean Hypocreadium caputvadum Kacem et al., 2011 (Lepocreadioidea: Lepocreadiidae), an intestinal parasite of Balistes capriscus in Tunisia

Occupancy, colonization and extinction patterns of rabbit populations: implications for Iberian lynx conservation

Cadmium and lead concentrations in Moniliformis moniliformis (Acanthocephala) and Rodentolepis microstoma (Cestoda), and in their definitive hosts, Rattus rattus and Mus domesticus in El Hierro (Canary Archipelago, Spain)

Spermatological characters of Acanthobothrium crassicolle Wedl, 1855 (Tetraphyllidea, Onchobothriidae), a parasite of the common stingray Dasyatis pastinaca

Ultrastructural and cytochemical study on vitellogenesis in the diphyllidean cestode Echinobothrium euterpes (Echinobothriidae) and its phylogenetical implications

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