Gastrointestinal helminths of Humboldt penguin (Spheniscus humboldti Meyen, 1834) from south central Chile
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منابع مشابه
Changes in Abundance and Distribution of Humboldt Penguin Spheniscus Humboldti
At an intraspecific level, patterns of species abundance distribution (SAD) vary in space and time, especially over the largest scales. The most basic, unimodal pattern is expressed in a log-normal shape, based on the abundant-center hypothesis (Gaston et al. 2008). SAD patterns can be driven by environmental variables (e.g. temperature, salinity, precipitation, productivity) as well as intrins...
متن کاملIncidental Mortality of Humboldt Penguins Spheniscus Humboldti in Gill Nets, Central Chile
Fishing activities by humans can affect seabirds directly, e.g. drowning in nets, drowning while taking longline baits and use of birds as bait or food, or indirectly, e.g. through effects on prey species such as competition between humans and birds for food. This may result in changes in seabird reproductive performance and population sizes (Duffy & Schneider 1994). Longline fisheries are a th...
متن کاملA Case of endoscopic retrieval of a long bamboo stick from a Humboldt penguin (Spheniscus humboldti)
An eighteen-month-old female Humboldt penguin (Spheniscus humboldti) that was 50 cm in length and 4.5 kg in weight was presented with anorexia and vomiting. The hematological and blood biochemical profiles revealed no remarkable findings, and no Salmonella, Shigella or Vibrio spp. were isolated from the fecal culture. However, radiographic imaging revealed a long linear foreign body presenting ...
متن کاملHeart rate and aerobic metabolism in Humboldt penguins, Spheniscus humboldti, during voluntary dives.
Heart rate and aerobic metabolism have been recorded from three Humboldt penguins, Spheniscus humboldti, freely diving on a freshwater pond (9 X 4.6 X 2.7 m deep), using an implanted radiotransmitter and an open circuit respirometer. Oxygen uptake at mean dive duration (46.2s) was 26% greater than the resting value, but the difference was not statistically significant. Heart rate was also simil...
متن کاملHormonal correlations at transition from reproduction to molting in an annual life cycle of Humboldt penguins (Spheniscus humboldti).
To understand the hormonal mechanism behind a unique strategy of breeding and molting in Humboldt penguins, six pairs of captive Humboldt penguins kept in an outdoor open display pen were observed and blood collected weekly for a year. They all molted between the middle of June and the middle of August within 10 days except one pair that molted about a month later. The late pair had been rearin...
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ژورنال
عنوان ژورنال: Latin American Journal of Aquatic Research
سال: 2019
ISSN: 0718-560X,0718-560X
DOI: 10.3856/vol47-issue1-fulltext-25