Foraging behaviour and reproductive success in Magellanic penguins ( Spheniscus magellanicus ): a comparative study of two colonies in southern Chile

1999 ◽  
Vol 133 (3) ◽  
pp. 381-393 ◽  
Author(s):  
A. Radl ◽  
B. M. Culik
Keyword(s):  
Reproductive Success ◽  
Comparative Study ◽  
Foraging Behaviour ◽  
Southern Chile ◽  
Spheniscus Magellanicus ◽  
Magellanic Penguins

Nest-Site Characteristics and Reproductive Success in Magellanic Penguins (Spheniscus magellanicus)

The Auk ◽  
1998 ◽  
Vol 115 (1) ◽  
pp. 34-49 ◽  
Author(s):  
David L. Stokes ◽  
P. Dee Boersma
Keyword(s):  
Reproductive Success ◽  
Nest Site ◽  
Spheniscus Magellanicus ◽  
Magellanic Penguins ◽  
Site Characteristics

scholarly journals Comparative study between photodynamic and antibiotic therapies for treatment of footpad dermatitis (bumblefoot) in Magellanic penguins (Spheniscus magellanicus)

2015 ◽  
Vol 12 (1) ◽  
pp. 36-44 ◽  
Author(s):  
Cristiane Lassálvia Nascimento ◽  
Martha Simões Ribeiro ◽  
Fábio Parra Sellera ◽  
Gustavo Henrique Pereira Dutra ◽  
Alyne Simões ◽  
...  
Keyword(s):  
Comparative Study ◽  
Spheniscus Magellanicus ◽  
Magellanic Penguins

Diving behavior of Magellanic penguins (Spheniscus magellanicus) at Punta Tombo, Argentina

2003 ◽  
Vol 81 (9) ◽  
pp. 1471-1483 ◽  
Author(s):  
Brian G Walker ◽  
P Dee Boersma
Keyword(s):  
Body Size ◽  
Reproductive Success ◽  
Body Condition ◽  
Temporal Variability ◽  
Diving Behavior ◽  
Trip Length ◽  
Spheniscus Magellanicus ◽  
Magellanic Penguins ◽  
Foraging Ability ◽  
Breeding Seasons

Geographic and temporal variability in the marine environment affects seabirds' ability to find food. Similarly, an individual's body size or condition may influence their ability to capture prey. We examined the diving behavior of Magellanic penguins (Spheniscus magellanicus) at Punta Tombo, Argentina, as an indicator of variation in foraging ability. We studied how body size affected diving capability and how diving varies among years and within breeding seasons. We also compared diving patterns of Magellanic penguins at Punta Tombo with those of birds in two colonies at the opposite end of the species' breeding range. Larger penguins tended to dive deeper and for longer than smaller birds. Trips were longer during incubation and in the years and colonies with lower reproductive success, which suggests that in those instances birds were working hard to recover body condition and feed chicks. Average dive depths, average dive durations, and percentages of time spent diving were always similar. We found that the only parameter these penguins consistently modified while foraging was the length of their foraging trip, which suggests that penguins at Punta Tombo were diving at maximum rates to find their preferred prey. Increasing trip length, we suggest, is a physiologically conservative solution for increasing the likelihood of encountering prey.

The influence of roost closure on the roosting and foraging behaviour of Eptesicus fuscus (Chiroptera: Vespertilionidae)

1986 ◽  
Vol 64 (5) ◽  
pp. 1128-1133 ◽  
Author(s):  
R. Mark Brigham ◽  
M. Brock Fenton
Keyword(s):  
Reproductive Success ◽  
Direct Observation ◽  
Foraging Behaviour ◽  
Eptesicus Fuscus ◽  
Maximum Distance ◽  
Radio Tracking ◽  
Site Specific ◽  
Big Brown Bats ◽  
Specific Factors ◽  
Foraging Flight

We used radio tracking and direct observation to determine the effect of roost closure on the roosting and foraging behaviour of big brown bats (Eptesicus fuscus) in maternity colonies near Ottawa. Individuals were site loyal, but after eviction they moved short distances to new roosts where they tended to produce fewer offspring. The time spent on the first foraging flight, the maximum distance travelled, and the use of feeding areas did not change with exclusion. The results suggest that bats roost to take advantage of site-specific factors that may increase reproductive success.

Sexual differences in the foraging behaviour of Magellanic Penguins related to stage of breeding

2012 ◽  
Vol 112 (2) ◽  
pp. 90-96 ◽  
Author(s):  
Andrea Raya Rey ◽  
Klemens Pütz ◽  
Gabriela Scioscia ◽  
Benno Lüthi ◽  
Adrián Schiavini
Keyword(s):  
Foraging Behaviour ◽  
Sexual Differences ◽  
Magellanic Penguins

Comparative foraging behaviour of sympatric Humboldt and Magellanic Penguins reveals species-specific and sex-specific strategies

2013 ◽  
Vol 113 (2) ◽  
pp. 145-153 ◽  
Author(s):  
Andrea Raya Rey ◽  
Klemens Pütz ◽  
Alejandro Simeone ◽  
Luciano Hiriart-Bertrand ◽  
Ronnie Reyes-Arriagada ◽  
...  
Keyword(s):  
Foraging Behaviour ◽  
Magellanic Penguins ◽  
Species Specific

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.

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