Humboldt penguins monitored via VHF telemetry
نویسندگان
چکیده
منابع مشابه
Metabolite Profiles of Male and Female Humboldt Penguins
We examined 185 metabolites in 30 adult Humboldt Penguins (Spheniscus humboldti) nesting at the Punta San Juan Marine Protected Area, Peru, in order to examine gender differences in metabolome profiles, particularly those involved in metabolism and energetics. The majority of the compounds identified were fatty (26% of total identified compounds), organic (19%), and amino (16%) acids. We were a...
متن کاملForaging performance and reproductive success of Humboldt penguins in relation to prey availability
During the austral summer 1998/1999, we compared foraging ecology and reproduction between chick-rearing Humboldt penguins Spheniscus humboldti at 2 colonies in Chile. At Pan de Azúcar in northern Chile prey availability was assumed to be lower than at Puñihuil, 1500 km further south, according to oceanographic data. Fifteen adult penguins were equipped with temperaturedepth recorders and stoma...
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 کاملForaging trip duration increases for Humboldt Penguins tagged with recording de ices
1998. A DNA test to sex most birds. – Mol. Ecol. 7: 1071–1075. Hamilton, W. D. and Zuk, M. 1982. Heritable true fitness and bright birds: a role for parasites? – Science 218: 384–386. Harper, D. G. C. 1999. Feather mites, pectoral muscle condition, wing length and plumage coloration of passerines. – Anim. Behav. 58: 553–562. Hudson, P. J. and Dobson, A. P. 1997. Host-parasite processes and demo...
متن کاملContrasting patterns of selection between MHC I and II across populations of Humboldt and Magellanic penguins
The evolutionary and adaptive potential of populations or species facing an emerging infectious disease depends on their genetic diversity in genes, such as the major histocompatibility complex (MHC). In birds, MHC class I deals predominantly with intracellular infections (e.g., viruses) and MHC class II with extracellular infections (e.g., bacteria). Therefore, patterns of MHC I and II diversi...
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 1998
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps162279