Delayed start of full incubation is related to a delayed brood patch development in Magellanic Penguins Spheniscus magellanicus

Bird Study ◽  
2016 ◽  
Vol 63 (3) ◽  
pp. 353-358 ◽  
Author(s):  
Melina Barrionuevo ◽  
Esteban Frere
Keyword(s):  
Spheniscus Magellanicus ◽  
Brood Patch ◽  
Magellanic Penguins

Health state and reproductive output in Magellanic penguins (Spheniscus magellanicus)

2002 ◽  
Vol 14 (1) ◽  
pp. 19-28 ◽  
Author(s):  
J. Moreno ◽  
P. Yorio ◽  
P. Garcia-Borboroglu ◽  
J. Potti ◽  
S. Villar
Keyword(s):  
Reproductive Output ◽  
Health State ◽  
Spheniscus Magellanicus ◽  
Magellanic Penguins

scholarly journals Occurrence of gastrointestinal parasites in Spheniscus magellanicus (Foster, 1781) located in Pontal do Sul, PR, Brazil

2018 ◽  
Vol 70 (2) ◽  
pp. 491-496
Author(s):  
M.S. Vanhoni ◽  
G.M. Arná ◽  
L.K. Sprenger ◽  
D.L. Vieira ◽  
L.W. Luis ◽  
...  
Keyword(s):  
Gastrointestinal Parasites ◽  
High Rate ◽  
Infected Bird ◽  
Brazilian Coast ◽  
Marine Animals ◽  
Spheniscus Magellanicus ◽  
Control Programs ◽  
Magellanic Penguins ◽  
Rehabilitation Centers ◽  
South Of Brazil

ABSTRACT Gastrointestinal parasitism is the main health problem faced by Spheniscus magellanicus, known as Magellanic penguins, in route on the Brazilian coast. The aim of this research was to report the occurrence and intensity of gastrointestinal parasites in S. magellanicus that reached Pontal do Sul, Paraná, South of Brazil. The study was performed at the Marine Study Center of the Federal University of Parana (CEM-UFPR) with 38 specimens, 31 were necropsied and seven were examined alive with coproparasitological exams. From the necropsied animals, 93.5% (29/31) were parasitized with at least one parasite species. Contracaecum pelagicum was the most prevalent 93,5% (29/31) parasite, followed by Cardiocephaloides physalis (64.5%) and Tetrabothrius lutzi (51.6%). Only one animal was free of parasites and the most infected bird had 1.076 parasites with an average of 194 worms. Willis-Mollay method revealed that 57.1% (4/7) had C. pelagicum eggs. In conclusion, the high rate of gastrointestinal parasites in S. magellanicus confirms the clinical exams, when animals had poor health conditions when they were found in the cost of Paraná. This study provides data to enrich the literature regarding the helminth fauna of the Magellanic penguins, assisting sanitary control programs in Rehabilitation Centers for Marine Animals.

scholarly journals PLASMODIUM RELICTUM AS A CAUSE OF AVIAN MALARIA IN WILD-CAUGHT MAGELLANIC PENGUINS (SPHENISCUS MAGELLANICUS)

1988 ◽  
Vol 24 (4) ◽  
pp. 610-619 ◽  
Author(s):  
Andrew S. Fix ◽  
Cheryl Waterhouse ◽  
Ellis C. Greiner ◽  
Michael K. Stoskopf
Keyword(s):  
Avian Malaria ◽  
Plasmodium Relictum ◽  
Spheniscus Magellanicus ◽  
Magellanic Penguins

scholarly journals Telomeres shorten and then lengthen before fledging in Magellanic penguins (Spheniscus magellanicus)

Aging ◽  
2017 ◽  
Vol 9 (2) ◽  
pp. 487-493 ◽  
Author(s):  
Jack A. Cerchiara ◽  
Rosa Ana Risques ◽  
Donna Prunkard ◽  
Jeffrey R. Smith ◽  
Olivia J. Kane ◽  
...  
Keyword(s):  
Spheniscus Magellanicus ◽  
Magellanic Penguins

Trophic ecology of Magellanic penguins (Spheniscus magellanicus) during the non-breeding period

2018 ◽  
Vol 210 ◽  
pp. 109-122 ◽  
Author(s):  
Fernanda Pinto Marques ◽  
Luis Gustavo Cardoso ◽  
Manuel Haimovici ◽  
Leandro Bugoni
Keyword(s):  
Trophic Ecology ◽  
Breeding Period ◽  
Spheniscus Magellanicus ◽  
Magellanic Penguins

Insights into the Foraging Behavior of Magellanic Penguins (Spheniscus magellanicus)

Waterbirds ◽  
2018 ◽  
Vol 41 (3) ◽  
pp. 332-336 ◽  
Author(s):  
Agustina Gómez-Laich ◽  
Ken Yoda ◽  
Flavio Quintana
Keyword(s):  
Foraging Behavior ◽  
Spheniscus Magellanicus ◽  
Magellanic Penguins

scholarly journals Analysis of hematologic and serum chemistry values of Spheniscus magellanicus with molecular detection of avian malarial parasites (Plasmodium spp.)

2014 ◽  
Vol 34 (12) ◽  
pp. 1236-1242 ◽  
Author(s):  
Sabrina D.E. Campos ◽  
Jeferson R. Pires ◽  
Cristiane L. Nascimento ◽  
Gustavo Dutra ◽  
Rodolpho A. Torres-Filho ◽  
...  
Keyword(s):  
Uric Acid ◽  
Blood Cell ◽  
Avian Malaria ◽  
Negative Impact ◽  
Southeastern Brazil ◽  
Uric Acid Concentration ◽  
Blood Samples ◽  
Spheniscus Magellanicus ◽  
Magellanic Penguins ◽  
Significant Difference

Magellanic penguins (Spheniscus magellanicus) routinely migrate from their breeding colonies to Southern Brazil often contracting diseases during this migration, notably avian malaria, which has been already reported in Brazil and throughout the world. Detection of Plasmodium spp. in blood smears is the routine diagnostic method of avian malaria, however it has a low sensitivity rate when compared to molecular methods. Considering the negative impact of avian malaria on penguins, the aim of this study was to detect the presence of Plasmodium spp. in Magellanic penguins using Polymerase Chain Reaction (PCR) and by verifying clinical, hematological, and biochemical alterations in blood samples as well as to verify the likely prognosis in response to infection. Blood samples were obtained from 75 penguins to determine packed cell volume (PCV), red blood cell (RBC) and white blood cell (WBC) counts, mean corpuscular volume (MCV), uric acid, total protein, albumin, globulin and aspartate aminotransferase (AST) activity levels. Whole blood samples were used for PCR assays. Plasmodium spp. was detected in 32.0% of the specimens using PCR and in 29.3% using microscopic analyses. Anorexia, diarrhea and neurological disorders were more frequent in penguins with malaria and a significant weight difference between infected and non-infected penguins was detected. PCV and MCV rates showed no significant difference. RBC and WBC counts were lower in animals with avian malaria and leukopenia was present in some penguins. Basophil and lymphocyte counts were lower in infected penguins along with high monocyte counts. There was no significant difference in AST activities between infected and non-infected animals. There was a significant increase in uric acid values, however a decrease in albumin values was observed in infected penguins. Based on this study, we concluded that Plasmodium spp. occurs in Magellanic penguins of rehabilitation centers in Southeastern Brazil, compromising the weight of infected animals with clinical alterations appearing in severe cases of this disease. It was also noted that, although the hematological abnormalities presented by these animals may not have been conclusive, leukopenia, monocytosis and the decrease of basophils and lymphocytes revealed an unfavorable prognosis, and Plasmodium spp. infections may progress with elevated uric acid concentration and low albumin levels.

A retrospective analysis of mortality in captive Magellanic penguins ( Spheniscus magellanicus ) in the United States, 2008–2018

Zoo Biology ◽  
2020 ◽  
Vol 39 (6) ◽  
pp. 405-410
Author(s):  
Lana Krol ◽  
Robert P. Moore ◽  
Adrian G. Mutlow ◽  
Sean M. Brady ◽  
Dominick Dorsa
Keyword(s):  
United States ◽  
Retrospective Analysis ◽  
The United States ◽  
Spheniscus Magellanicus ◽  
Magellanic Penguins

The glucocorticoid stress response in Magellanic Penguins (Spheniscus magellanicus): comparing within and between breeding seasons, by age and colony, after fighting, and with other penguin species

2015 ◽  
Vol 93 (2) ◽  
pp. 123-131 ◽  
Author(s):  
Brian G. Walker ◽  
P. Dee Boersma ◽  
John C. Wingfield
Keyword(s):  
Stress Response ◽  
Rockhopper Penguin ◽  
Weather Event ◽  
Spheniscus Magellanicus ◽  
Magellanic Penguins ◽  
Baseline Corticosterone ◽  
Breeding Seasons ◽  
Stress Patterns ◽  
Severe Weather Event ◽  
Penguin Species

Comparing baseline and stress-induced glucocorticoid hormone levels in animals is a popular tool to assess differences in stress experienced among groups. We compare corticosterone levels in Magellanic Penguins (Spheniscus magellanicus (J.R. Forster, 1781)) in situations where we hypothesize differences in stress patterns may exist. We compared penguins both within and between breeding seasons, birds breeding at two different locations, penguins at three different ages, penguins that had shown evidence of recent fighting, and, finally, how stress patterns differed for four different penguin species. Throughout a breeding season (settlement, incubation, and chick-rearing), we found no differences in either baseline or stress-induced hormone concentrations. Chick, juvenile, and adult penguins did not differ in baseline corticosterone levels, but juveniles had a reduced stress response. Penguins in one season showed a stress response to capture, likely due to a recent severe weather event. We found no differences in baseline or stress-induced hormone titers for birds from two different breeding locations. Evidence of recent fighting also did not alter baseline corticosterone levels. Finally, among four species of penguins measured (Magellanic, Humboldt (Spheniscus humboldti Meyen, 1834), Galápagos (Spheniscus mendiculus Sundevall, 1871), and Rockhopper (Eudyptes chrysocome (J.R. Forster, 1781)), baseline levels were always consistent, while stress-induced levels were significantly higher in the Rockhopper Penguin only.

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