Spheniscus

14,000,000 Leading Edge Experts on the ideXlab platform

Scan Science and Technology

Contact Leading Edge Experts & Companies

Scan Science and Technology

Contact Leading Edge Experts & Companies

The Experts below are selected from a list of 2025 Experts worldwide ranked by ideXlab platform

Barrionuevo Melina - One of the best experts on this subject based on the ideXlab platform.

  • New record of fleas (Hexapoda, Siphonaptera) parasitizing the Magellanic Penguin Spheniscus magellanicus (Forster) (Aves, Sphenisciformes, Spheniscidae) in Argentina
    2020
    Co-Authors: Lareschi Marcela, Procopio, Diego Esteban, Frere Esteban, Morgenthaler Annick, Millones Ana, Barrionuevo Melina
    Abstract:

    Las pulgas del género Parapsyllus Enderlein, 1903 (Rhopalopsyllidae, Parapsyllinae) parasitan aves en forma exclusiva, en su mayoría marinas. Damos a conocer un nuevo registro de Parapsyllus longicornis (Enderlein, 1901) parasitando al Pingüino de Magallanes Spheniscus magellanicus (Forster) (Aves, Sphenisciformes, Spheniscidae) en la Argentina. Este registro extiende el límite norte de distribución de esta pulga en el continente americano.Fleas from the genus Parapsyllus Enderlein, 1903 (Rhopalopsyllidae, Parapsyllinae) exclusively parasitize birds, mainly marine species. We present a new record of Parapsyllus longicornis (Enderlein, 1901) parasitizing the Magellanic Penguin Spheniscus magellanicus (Forster) (Aves, Sphenisciformes, Spheniscidae) in Argentina. This new record extends the northern limit of distribution of this flea in the Americas.Centro de Estudios Parasitológicos y de Vectore

  • Geolocation and stable isotopes indicate habitat segregation between sexes in Magellanic penguins during the winter dispersion
    'Wiley', 2020
    Co-Authors: Barrionuevo Melina, Ciancio Blanc, Javier Ernesto, Steinfurth Antje, Frere Esteban
    Abstract:

    The Magellanic penguin Spheniscus magellanicus is a top predator and a major consumer of marine resources in the Patagonian Continental Shelf and worldwide. It is the most migratory of the Spheniscus penguins, but until recently, its migration route was only partially known. Our aims with regard to the Magellanic penguin breeding on Isla Quiroga, Argentina, were: 1) to compare the distribution during the winter period between sexes and 2) in case that habitat is segregated, to evaluate possible proximate causes like competitive exclusion and/or habitat specialization. In March 2017 and 2018, prior to migration, we equipped 26 penguins with MK3/4 geolocators, which were recovered in late September/early October. Penguins dispersed northwards up to 29°S and southwards up to 56°S, near the Beagle Channel, being distributed over 2158 ± 50 km of latitudinal range and showing a large-scale distribution pattern across longitudes in waters within the continental shelf. We found a longitudinal segregation between sexes in their winter grounds, with males closer to the 200-m isobath and further from the coastline than females. Morphological and physiological differences between sexes might allow males to dive deeper at a lower cost than females, which could result in a more offshore path for males. This spatial segregation was supported by bulk blood stable isotope values and estimated isotopic niche, which differed between males and females at their arrival from winter breeding grounds, but not while penguin breed and behave as central place foragers in the colony. For the first time in this species, we combined two independent tools, geolocation and stable isotope data, and find that sexual segregation in habitat use could potentially generate an optimal winter foraging strategy for both sexes, precluding potential intersex competition for food.Fil: Barrionuevo, Melina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; ArgentinaFil: Ciancio Blanc, Javier Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; ArgentinaFil: Steinfurth, Antje. Royal Society For The Protection Of Birds; Reino UnidoFil: Frere, Esteban. Universidad Nacional de la Patagonia Austral; Argentin

  • New record of fleas (Hexapoda, Siphonaptera) parasitizing the Magellanic Penguin Spheniscus magellanicus (Forster) (Aves, Sphenisciformes, Spheniscidae) in Argentina
    Asociación Parasitológica Argentina, 2016
    Co-Authors: Lareschi Marcela, Procopio, Diego Esteban, Frere Esteban, Morgenthaler Annick, Millones Ana, Barrionuevo Melina
    Abstract:

    Las pulgas del género Parapsyllus Enderlein, 1903 (Rhopalopsyllidae, Parapsyllinae) parasitan aves en forma exclusiva, en su mayoría marinas. Damos a conocer un nuevo registro de Parapsyllus longicornis (Enderlein, 1901) parasitando al Pingüino de Magallanes Spheniscus magellanicus (Forster) (Aves, Sphenisciformes, Spheniscidae) en la Argentina. Este registro extiende el límite norte de distribución de esta pulga en el continente americano.Fleas from the genus Parapsyllus Enderlein, 1903 (Rhopalopsyllidae, Parapsyllinae) exclusively parasitize birds, mainly marine species. We present a new record of Parapsyllus longicornis (Enderlein, 1901) parasitizing the Magellanic Penguin Spheniscus magellanicus (Forster) (Aves, Sphenisciformes, Spheniscidae) in Argentina. This new record extends the northern limit of distribution of this flea in the Americas.Fil: Lareschi, Marcela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Estudios Parasitológicos y de Vectores. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Estudios Parasitológicos y de Vectores; ArgentinaFil: Procopio, Diego Esteban. Universidad Nacional de la Patagonia Austral. Unidad Académica Caleta Olivia. Centro de Investigaciones Puerto Deseado; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Frere, Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Morgenthaler, Annick. Universidad Nacional de la Patagonia Austral. Unidad Académica Caleta Olivia. Centro de Investigaciones Puerto Deseado; ArgentinaFil: Millones, Ana. Universidad Nacional de la Patagonia Austral. Unidad Académica Caleta Olivia. Centro de Investigaciones Puerto Deseado; ArgentinaFil: Barrionuevo, Melina. Universidad Nacional del Comahue; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

Dee P Boersma - One of the best experts on this subject based on the ideXlab platform.

  • telomeres shorten and then lengthen before fledging in magellanic penguins Spheniscus magellanicus
    Aging (Albany NY), 2017
    Co-Authors: Jack A Cerchiara, Rosa Ana Risques, Donna Prunkard, Jeffrey R Smith, Olivia J Kane, Dee P Boersma
    Abstract:

    For all species, finite metabolic resources must be allocated toward three competing systems: maintenance, reproduction, and growth. Telomeres, the nucleoprotein tips of chromosomes, which shorten with age in most species, are correlated with increased survival. Chick growth is energetically costly and is associated with telomere shortening in most species. To assess the change in telomeres in penguin chicks, we quantified change in telomere length of wild known-age Magellanic penguin (Spheniscus magellanicus) chicks every 15 days during the species' growth period, from hatching to 60 days-of-age. Magellanic penguins continue to grow after fledging so we also sampled a set of 1-year-old juvenile penguins, and adults aged 5 years. Telomeres were significantly shorter on day 15 than on hatch day but returned to their initial length by 30 days old and remained at that length through 60 days of age. The length of telomeres of newly hatched chicks, chicks aged 30, 45 and 60 days, juveniles, and adults aged 5 years were similar. Chicks that fledged and those that died had similar telomere lengths. We show that while telomeres shorten during growth, Magellanic penguins elongate telomeres to their length at hatch, which may increase adult life span and reproductive opportunities.

  • marine reserve in chile would benefit penguins and ecotourism
    Ocean & Coastal Management, 2009
    Co-Authors: Elizabeth Skewgar, Alejandro Simeone, Dee P Boersma
    Abstract:

    The penguin colony at Punihuil Islands, southern Chile, is the only known place where hundreds of Magellanic (Spheniscus magellanicus) and Humboldt (Spheniscus humboldti) penguins nest together. Current jurisdictional limitations leave the waters around the colony unprotected, and penguins are vulnerable to accidental drowning in gillnets. Ecotourism is an important industry for the small community nearby, but residents are frustrated that there is no mechanism to protect penguins and ecotourism. Designation of a Marine Reserve, with a participatory management plan crossing institutional boundaries, could offer protection to both wildlife and human livelihoods, and serve as a model for protecting natural capital.

  • following the fish penguins and productivity in the south atlantic
    Ecological Monographs, 2009
    Co-Authors: Dee P Boersma, Esteban Frere, Ginger A Rebstock, Sue E Moore
    Abstract:

    We tested four predictions for central-place foragers provisioning offspring along a gradient in primary production spanning 1000 km of coastline in Argentina, using male Magellanic Penguins (Spheniscus magellanicus). Three of the predictions were supported. (1) Foraging trip distances corresponded with the production gradient; penguins swam shorter distances (mean maximum distance: 60–110 km) at the southern colonies where production is higher and prey species aggregate nearshore, and longer distances (143–242 km) at the northern colonies where production is lower and prey species aggregate at offshore fronts. Within these broad regions, foraging locations coincided with tidal mixing fronts or high chlorophyll concentrations. (2) Foraging trips followed a pattern of intermediate speed and meandering when outbound (32% of locations at sea), slow meandering movements within the foraging areas (45%), and very fast and direct returns to the colony (23%). Regardless of how far they went, penguins spent the mo...

  • nesting density and reproductive success in a colonial seabird the magellanic penguin
    Ecology, 2000
    Co-Authors: David L Stokes, Dee P Boersma
    Abstract:

    A central tenet of density-dependent habitat selection theory, that individual fitness generally declines with increasing population density, has led to the hypothesis that, for colonial species, living at high density produces advantages that outweigh the costs. Seabirds have provided evidence for this hypothesis, and positive effects of high density have been offered as explanations for coloniality in this overwhelmingly colonial group. We investigated effects of nesting density on reproductive success of a colonial seabird that nests at variable densities, the Magellanic Penguin (Spheniscus magellanicus). Using breeding success data collected from 1984 to 1991 as part of a long-term study of this species at a large colony at Punta Tombo, Argentina, and experiments that included manipulation of nesting density, we addressed effects of nesting density at two spatial scales: the within-colony area scale (hundreds to thousands of square meters) and the very small scale of a penguin's immediate surroundings...

  • nest site characteristics and reproductive success in magellanic penguins Spheniscus magellanicus
    The Auk, 1998
    Co-Authors: David L Stokes, Dee P Boersma
    Abstract:

    We used cross-sectional, longitudinal, and experimental data to investigate the effects of habitat at the smallest spatial scale-the nest site-on reproductive success of Magellanic Penguins (Spheniscus magellanicus). Over an eight-year period, the amount of nest cover was positively correlated with fledging success. The same pairs tended to be more successful when they had more nest cover, and experimental increases and decreases in cov- er significantly affected survival of nest contents. Other characteristics of nest sites, such as nest type and type of vegetation over the nest, did not affect success. The positive effect of cover resulted mainly from reduced exposure of nest contents to predators during incuba- tion and to high temperatures when chicks were young. Roof cover was positively correlated with fledging success in nests from all areas. Cover on the sides of the nest giving the most protection from the sun was positively correlated with fledging success in warmer sites and with survival of young chicks in all areas. Young chicks at nests with less cover were more likely to move from their nests and to die on hot days. Experimental results indicated that the likelihood of egg detection by predators decreased with increasing nest cover. Height of nest entrance was a significant predictor of egg loss, suggesting that accessibility of nest contents to predators was an important component of predation risk. Thermal properties of nests and risk of predation were related; predation of nest contents was more likely when adults were absent, and during hot weather adults were more often absent from nests with little cover. Although the effect of cover on success was small relative to the large yearly variation in success due to food conditions, cover is likely to influence lifetime reproductive success substantially. Large and long-term data sets and experimental approaches may be necessary to identify subtle but biologically important factors among long-lived organisms that inhabit variable environments. Received 18 November 1996, accepted 29 May 1997.

Patricia G Parker - One of the best experts on this subject based on the ideXlab platform.

  • Landscape genomics: natural selection drives the evolution of mitogenome in penguins
    BMC, 2018
    Co-Authors: Barbara Ramos, Gisele P M Dantas, Daniel González-acuña, Patricia G Parker, Melanie Massaro, David E. Loyola, Warren E. Johnson, Marcelo D. Miranda, Juliana A Vianna
    Abstract:

    Abstract Background Mitochondria play a key role in the balance of energy and heat production, and therefore the mitochondrial genome is under natural selection by environmental temperature and food availability, since starvation can generate more efficient coupling of energy production. However, selection over mitochondrial DNA (mtDNA) genes has usually been evaluated at the population level. We sequenced by NGS 12 mitogenomes and with four published genomes, assessed genetic variation in ten penguin species distributed from the equator to Antarctica. Signatures of selection of 13 mitochondrial protein-coding genes were evaluated by comparing among species within and among genera (Spheniscus, Pygoscelis, Eudyptula, Eudyptes and Aptenodytes). The genetic data were correlated with environmental data obtained through remote sensing (sea surface temperature [SST], chlorophyll levels [Chl] and a combination of SST and Chl [COM]) through the distribution of these species. Results We identified the complete mtDNA genomes of several penguin species, including ND6 and 8 tRNAs on the light strand and 12 protein coding genes, 14 tRNAs and two rRNAs positioned on the heavy strand. The highest diversity was found in NADH dehydrogenase genes and the lowest in COX genes. The lowest evolutionary divergence among species was between Humboldt (Spheniscus humboldti) and Galapagos (S. mendiculus) penguins (0.004), while the highest was observed between little penguin (Eudyptula minor) and Adélie penguin (Pygoscelis adeliae) (0.097). We identified a signature of purifying selection (Ka/Ks 

  • seroprevalence of malarial antibodies in galapagos penguins Spheniscus mendiculus
    Journal of Parasitology, 2013
    Co-Authors: Jamie L Palmer, Hernan F Vargas, Sharon L Deem, Marilyn Cruz, Thomas F Mccutchan, Daniel A Hartman, Patricia G Parker
    Abstract:

    A parasite species of the genus Plasmodium has recently been documented in the endangered Galapagos penguin (Spheniscus mendiculus). Avian malaria causes high mortality in several species after initial exposure and there is great concern for the conservation of the endemic Galapagos penguin. Using a Plasmodium spp. circumsporozoite protein antigen, we standardized an enzyme-linked immunosorbent assay to test the level of exposure in this small population, as indicated by seroprevalence. Sera from adult and juvenile Galapagos penguins collected between 2004 and 2009 on the Galapagos archipelago were tested for the presence of anti-Plasmodium spp. antibodies. Penguins were also tested for the prevalence of avian malaria parasite DNA using a polymerase chain reaction (PCR) screening. Total seroprevalence of malarial antibodies in this sample group was 97.2%, which suggests high exposure to the parasite and low Plasmodium-induced mortality. However, total prevalence of Plasmodium parasite DNA by PCR screening was 9.2%, and this suggests that parasite prevalence may be under-detected through PCR screening. Multiple detection methods may be necessary to measure the real extent of Plasmodium exposure on the archipelago.

  • exposure to toxoplasma gondii in galapagos penguins Spheniscus mendiculus and flightless cormorants phalacrocorax harrisi in the galapagos islands ecuador
    Journal of Wildlife Diseases, 2010
    Co-Authors: Hernan F Vargas, Sharon L Deem, Jane Merkel, Lora R Ballweber, Marilyn Cruz, Patricia G Parker
    Abstract:

    Toxoplasma gondii is one of the most common protozoan parasites of humans and warm-blooded animals. Members of the family Felidae are the only definitive hosts of this parasite and, thus, important in the epidemiology of the disease. Previous studies on Pacific islands have found T. gondii infections in a number of avian species where domestic cats (Felis catus) have been introduced. Little is known about T. gondii in the Galapagos Islands, although introduced domestic cats in the archipelago are known to be T. gondii antibody-positive. In this study, we quantified prevalence of antibody to T. gondii in two threatened avian marine species, Galapagos Penguins (Spheniscus mendiculus) and Flightless Cormorants (Phalacrocorax harrisi), and tested the hypothesis that this parasite is more prevalent on Isabela Island (with cats) than on Fernandina Island (without cats). Overall, antibody prevalence was 2.3% in both Galapagos Penguins and Flightless Cormorants from samples collected during 2003–2005, and in 2008...

  • plasmodium blood parasite found in endangered galapagos penguins Spheniscus mendiculus
    Biological Conservation, 2009
    Co-Authors: Iris I Levin, Hernan F Vargas, Diana C Outlaw, Patricia G Parker
    Abstract:

    This is the first report of a Plasmodium blood parasite found in the Galapagos Archipelago. Phylogenetic analyses place this parasite, recovered from endangered Galapagos penguins (Spheniscus mendiculus), within the genus Plasmodium, and suggest a close relationship to some of the most dangerous lineages of Plasmodium that have been known to cause severe mortality and morbidity in captive penguin populations. Infectious disease is an increasingly important cause of global species extinctions, and extinctions due to avian pox and avian malaria (Plasmodium relictum) have been well documented in Hawaiian avifauna. Plasmodium blood parasites had not been detected in Galapagos birds until now, despite previous microscopic and molecular screening of many of the species, including the Galapagos penguin. While penguin populations now appear healthy, it is unclear whether this parasite will have an obvious impact on their survival and reproduction, particularly during El Nino events, which cause stress due to reduced food availability. It is possible that this parasite arrived with or shortly after the recent arrival of an introduced mosquito, Culex quinquefasciatus, known elsewhere as a competent vector of Plasmodium blood parasites.

  • microfilariae in galapagos penguins Spheniscus mendiculus and flightless cormorants phalacrocorax harrisi genetics morphology and prevalence
    Journal of Parasitology, 2007
    Co-Authors: Jane Merkel, Hugh I Jones, Noah K Whiteman, Nicole L Gottdenker, Hernan Vargas, Erika K Travis, Eric R Miller, Patricia G Parker
    Abstract:

    Galapagos penguins (Spheniscus mendiculus) and flightless cormorants (Phalacrocorax harrisi) live in small, isolated populations on the westernmost islands of Isabela and Fernandina in the Galapagos Islands, Ecuador. Between August 2003 and February 2005, 4 field trips, 2 in the cool, dry season (August 2003 and August 2004) and 2 in the hot, rainy season (March 2004 and February 2005), were undertaken; 298 Galapagos penguins and 380 cormorants were sampled for prevalence and intensity of hemoparasites. Microfilariae were found in both the penguins and the cormorants. Blood smears were negative for the presence of other species of hemoparasites. Overall prevalence of microfilariae across seasons was 42.0% in cormorants and 13.8% in the penguins. Intensity of infection was generally low (mean = 3.2–31.7 in 25 fields across seasons and species) with the exception of a few individuals with markedly high intensities of parasites (>300 in 25 fields in 1 cormorant). Prevalence of microfilariae increased signifi...

Beatriz Brener - One of the best experts on this subject based on the ideXlab platform.

  • Contracaecum pelagicum and C. plagiaticium (Nematoda: Anisakidae) infection in Magellanic penguins (Sphenisciformes: Spheniscidae) on the coast of Rio de Janeiro State 1
    Pesquisa Veterinária Brasileira, 2013
    Co-Authors: Sabrina Destri Emmerick Campos, Bárbara Bianca N. Pereira, Salvatore Siciliano, Carlos Henrique C. Costa, Nádia Regina Pereira Almosny, Beatriz Brener
    Abstract:

    ABSTRACT.- Campos S.D.E., Pereira B.B.N., Siciliano S., Costa C.H.C., Almosny N.R.P. & Brener B. 2013. Contracaecum pelagicum and C. plagiaticium (Nematoda: Anisakidae) infection in Magellanic penguins (Sphenisciformes: Spheniscidae) on the coast of Rio de Janeiro State. Pesquisa Veterinaria Brasileira 33(1):89-93. Departamento de Patologia e Clinica Vete-rinaria, Faculdade de Veterinaria Universidade Federal Fluminense, Rua Vital Brazil Filho 64, Vital Brazil, Niteroi, RJ 21230-360, Brazil. E-mail: s.destri@gmail.comThe occurrence of infections and the disease induced by Contracaecum plagiaticium and Contracaecum pelagicum in Magellanic penguins, Spheniscus magellanicus Foster. 1781 (Sphenisciformes: Spheniscidae) were reported on the coast of Rio de Janeiro. Parasites of the genus Contracaecum were present in all of the 11 studied animals. Co-infections by Csontracaecum pelagicum and C. plagiaticium were observed in three hosts (27.27%). Gross lesions included hyperemia of the esophagus and/or stomach in six animals (54.54%). One of these animals (9.09%), parasitized by

  • Contracaecum pelagicum and C. plagiaticium (Nematoda: Anisakidae) infection in Magellanic penguins (Sphenisciformes: Spheniscidae) on the coast of Rio de Janeiro State Infecção por Contracaecum pelagicum e C. plagiaticium (Nematoda: Anisakidae) em pi
    Colégio Brasileiro de Patologia Animal (CBPA), 2013
    Co-Authors: Sabrina Destri Emmerick Campos, Bárbara Bianca N. Pereira, Salvatore Siciliano, Carlos Henrique C. Costa, Nádia Regina Pereira Almosny, Beatriz Brener
    Abstract:

    The occurrence of infections and the disease induced by Contracaecum plagiaticium and Contracaecum pelagicum in Magellanic penguins, Spheniscus magellanicus Foster. 1781 (Sphenisciformes: Spheniscidae) were reported on the coast of Rio de Janeiro. Parasites of the genus Contracaecum were present in all of the 11 studied animals. Co-infections by Csontracaecum pelagicum and C. plagiaticium were observed in three hosts (27.27%). Gross lesions included hyperemia of the esophagus and/or stomach in six animals (54.54%). One of these animals (9.09%), parasitized by C. plagiaticium, presented a hemorrhagic area in the gastric mucosa. Histopathological findings demonstrated esophagitis with helminthes segments inserted in the epithelium, showing discrete mixed inflammatory infiltrate of heterophils and mononuclear cells. These parasites may be associated with other diseases, implicating in death of the penguins.A ocorrência da infeção e a doença induzida por Contracaecum plagiaticium e Contracaecum pelagicum em pinguins-de-Magalhães, Spheniscus magellanicus Foster, 1781 (Sphenisciformes: Spheniscidae), na costa do Rio de Janeiro, foram relatadas. Parasitos do gênero Contracaecum estavam presentes em todos os 11 animais estudados. Co-infecção por Contracaecum pelagicum e C. plagiaticium foi observada em três hospedeiros (27,27%). Achados macroscópicos de necropsia incluíram hiperemia do esôfago e/ou estômago em seis animais (54,54%). Um desses animais (9,09%), parasitado por C. plagiaticium, apresentou área hemorrágica na mucosa gástrica. Os achados histopatológicos demonstraram esofagite com segmento de helminto inserido no epitélio, e discreto infiltrado inflamatório misto com heterófilos e células mononucleares. Estes parasitos podem estar associados a doenças, implicando em morte dos pinguins

  • Contracaecum pelagicum and C. plagiaticium (Nematoda: Anisakidae) infection in Magellanic penguins (Sphenisciformes: Spheniscidae) on the coast of Rio de Janeiro State
    Colégio Brasileiro de Patologia Animal (CBPA), 2013
    Co-Authors: Sabrina Destri Emmerick Campos, Bárbara Bianca N. Pereira, Salvatore Siciliano, Carlos Henrique C. Costa, Nádia Regina Pereira Almosny, Beatriz Brener
    Abstract:

    The occurrence of infections and the disease induced by Contracaecum plagiaticium and Contracaecum pelagicum in Magellanic penguins, Spheniscus magellanicus Foster. 1781 (Sphenisciformes: Spheniscidae) were reported on the coast of Rio de Janeiro. Parasites of the genus Contracaecum were present in all of the 11 studied animals. Co-infections by Csontracaecum pelagicum and C. plagiaticium were observed in three hosts (27.27%). Gross lesions included hyperemia of the esophagus and/or stomach in six animals (54.54%). One of these animals (9.09%), parasitized by C. plagiaticium, presented a hemorrhagic area in the gastric mucosa. Histopathological findings demonstrated esophagitis with helminthes segments inserted in the epithelium, showing discrete mixed inflammatory infiltrate of heterophils and mononuclear cells. These parasites may be associated with other diseases, implicating in death of the penguins

Sabrina Destri Emmerick Campos - One of the best experts on this subject based on the ideXlab platform.

  • identificacao de edwardsiella tarda em processo septicemico em Spheniscus magellanicus sphenisciformes spheniscidae relato de caso
    Brazilian Journal of Veterinary Medicine, 2013
    Co-Authors: Sabrina Destri Emmerick Campos, A Pereira, Andre Luiz Paiva Sena Maia, Carlos Henrique Campello Costa, Helena Magalhaes, Nádia Regina Pereira Almosny
    Abstract:

    ABSTRACT. Campos S.D.E., Pereira A.M., Maia A.L.P.S., Costa C.H.C., Magalhaes H. & Almosny N.R.P. [Identification of septicemia by Edwardsiella tarda in Spheniscus magellanicus (Sphenisciformes: Spheniscidae) - Case report]. Identificacao de Edwardsiella tarda em processo septicemico em Spheniscus magellanicus (Sphenisciformes: Spheniscidae) - Relato de caso. Revista Brasileira de Medicina Veterinaria, 35(3):224-228, 2013. Departamento de Patologia e Clinica Veterinaria, Faculdade de Veterinaria, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, Niteroi, RJ 24230-360, Brasil. E-mail: s.destri@gmail.com The Magellanic penguins are seabirds that migrate through the Brazilian continental shelf and may be lost reaching the beaches of Rio de Janeiro. The rescued birds became weakened and susceptible to opportunistic infections. Edwardsiella tarda, a bacterium of the Enterobacteriaceae, is a pathogenic species which can cause intestinal and extra intestinal disorders. The marine fauna is regarded as its reservoir. Thus, the aim of this study was to report a case of septicemia due to E. tarda in one Magellanic penguin of the Niteroi Zoo. The animal presented marked emaciation, dyspnea, diarrhea, pale mucosa and died, being submitted for necropsy, histopathology and bacteriology. The heart blood was properly collected and used for blood culture. Microscopy identified colonization of gastric and intestinal mucosa by bacteria. It was possible the isolation and identification of E. tarda in the culture of heart blood. Possibly there was widespread opportunistic infection by the etiological agent, a hypothesis supported by clinical, histopathological and blood cultures.

  • Contracaecum pelagicum and C. plagiaticium (Nematoda: Anisakidae) infection in Magellanic penguins (Sphenisciformes: Spheniscidae) on the coast of Rio de Janeiro State 1
    Pesquisa Veterinária Brasileira, 2013
    Co-Authors: Sabrina Destri Emmerick Campos, Bárbara Bianca N. Pereira, Salvatore Siciliano, Carlos Henrique C. Costa, Nádia Regina Pereira Almosny, Beatriz Brener
    Abstract:

    ABSTRACT.- Campos S.D.E., Pereira B.B.N., Siciliano S., Costa C.H.C., Almosny N.R.P. & Brener B. 2013. Contracaecum pelagicum and C. plagiaticium (Nematoda: Anisakidae) infection in Magellanic penguins (Sphenisciformes: Spheniscidae) on the coast of Rio de Janeiro State. Pesquisa Veterinaria Brasileira 33(1):89-93. Departamento de Patologia e Clinica Vete-rinaria, Faculdade de Veterinaria Universidade Federal Fluminense, Rua Vital Brazil Filho 64, Vital Brazil, Niteroi, RJ 21230-360, Brazil. E-mail: s.destri@gmail.comThe occurrence of infections and the disease induced by Contracaecum plagiaticium and Contracaecum pelagicum in Magellanic penguins, Spheniscus magellanicus Foster. 1781 (Sphenisciformes: Spheniscidae) were reported on the coast of Rio de Janeiro. Parasites of the genus Contracaecum were present in all of the 11 studied animals. Co-infections by Csontracaecum pelagicum and C. plagiaticium were observed in three hosts (27.27%). Gross lesions included hyperemia of the esophagus and/or stomach in six animals (54.54%). One of these animals (9.09%), parasitized by

  • Contracaecum pelagicum and C. plagiaticium (Nematoda: Anisakidae) infection in Magellanic penguins (Sphenisciformes: Spheniscidae) on the coast of Rio de Janeiro State Infecção por Contracaecum pelagicum e C. plagiaticium (Nematoda: Anisakidae) em pi
    Colégio Brasileiro de Patologia Animal (CBPA), 2013
    Co-Authors: Sabrina Destri Emmerick Campos, Bárbara Bianca N. Pereira, Salvatore Siciliano, Carlos Henrique C. Costa, Nádia Regina Pereira Almosny, Beatriz Brener
    Abstract:

    The occurrence of infections and the disease induced by Contracaecum plagiaticium and Contracaecum pelagicum in Magellanic penguins, Spheniscus magellanicus Foster. 1781 (Sphenisciformes: Spheniscidae) were reported on the coast of Rio de Janeiro. Parasites of the genus Contracaecum were present in all of the 11 studied animals. Co-infections by Csontracaecum pelagicum and C. plagiaticium were observed in three hosts (27.27%). Gross lesions included hyperemia of the esophagus and/or stomach in six animals (54.54%). One of these animals (9.09%), parasitized by C. plagiaticium, presented a hemorrhagic area in the gastric mucosa. Histopathological findings demonstrated esophagitis with helminthes segments inserted in the epithelium, showing discrete mixed inflammatory infiltrate of heterophils and mononuclear cells. These parasites may be associated with other diseases, implicating in death of the penguins.A ocorrência da infeção e a doença induzida por Contracaecum plagiaticium e Contracaecum pelagicum em pinguins-de-Magalhães, Spheniscus magellanicus Foster, 1781 (Sphenisciformes: Spheniscidae), na costa do Rio de Janeiro, foram relatadas. Parasitos do gênero Contracaecum estavam presentes em todos os 11 animais estudados. Co-infecção por Contracaecum pelagicum e C. plagiaticium foi observada em três hospedeiros (27,27%). Achados macroscópicos de necropsia incluíram hiperemia do esôfago e/ou estômago em seis animais (54,54%). Um desses animais (9,09%), parasitado por C. plagiaticium, apresentou área hemorrágica na mucosa gástrica. Os achados histopatológicos demonstraram esofagite com segmento de helminto inserido no epitélio, e discreto infiltrado inflamatório misto com heterófilos e células mononucleares. Estes parasitos podem estar associados a doenças, implicando em morte dos pinguins

  • Contracaecum pelagicum and C. plagiaticium (Nematoda: Anisakidae) infection in Magellanic penguins (Sphenisciformes: Spheniscidae) on the coast of Rio de Janeiro State
    Colégio Brasileiro de Patologia Animal (CBPA), 2013
    Co-Authors: Sabrina Destri Emmerick Campos, Bárbara Bianca N. Pereira, Salvatore Siciliano, Carlos Henrique C. Costa, Nádia Regina Pereira Almosny, Beatriz Brener
    Abstract:

    The occurrence of infections and the disease induced by Contracaecum plagiaticium and Contracaecum pelagicum in Magellanic penguins, Spheniscus magellanicus Foster. 1781 (Sphenisciformes: Spheniscidae) were reported on the coast of Rio de Janeiro. Parasites of the genus Contracaecum were present in all of the 11 studied animals. Co-infections by Csontracaecum pelagicum and C. plagiaticium were observed in three hosts (27.27%). Gross lesions included hyperemia of the esophagus and/or stomach in six animals (54.54%). One of these animals (9.09%), parasitized by C. plagiaticium, presented a hemorrhagic area in the gastric mucosa. Histopathological findings demonstrated esophagitis with helminthes segments inserted in the epithelium, showing discrete mixed inflammatory infiltrate of heterophils and mononuclear cells. These parasites may be associated with other diseases, implicating in death of the penguins

Related terms

Spheniscus - 15 days free trial to Access Experts & Abstracts