Sexing Galápagos penguins Spheniscus mendiculus by morphological measurements [PDF]
Endangered Species Research, 2018 The ability to identify the sex of individuals is essential in studies of ecology, behavior, and conservation, but reliable methods for sexing species that exhibit low sexual dimorphism are often time consuming or invasive.
Cappello, CD, Boersma, PD
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Cumulative Extreme Events Threaten Penguin Habitats Across the Southern Hemisphere. [PDF]
Glob Chang BiolThis study examines how multiple extreme events overlap across the Southern Hemisphere, focusing on hotspots of 18 penguin species across both land and sea. African, Snares, Emperor, Adélie and Galápagos penguins experience the greatest combined exposure, and most species are projected to face more frequent extremes if current trends persist.
Gimeno M +4 more
europepmc +2 more sources
New crania from Seymour Island (Antarctica) shed light on anatomy of Eocene penguins [PDF]
, 2013 Antarctic skulls attributable to fossil penguins are rare. Three new penguin crania from Antarctica are here described providing an insight into their feeding function.
Acosta Hospitaleche, Carolina Ileana Alicia
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Adaptive Genetic Variation in Black-and-White Snub-Nosed Monkeys (<i>Rhinopithecus bieti</i>): Low Diversity and the Role of Balancing Selection. [PDF]
Ecol EvolWe investigated the adaptive genetic diversity within a population of Rhinopithecus bieti using amplicon sequencing. From 47 individuals, we identified 16 MHC class I sequences, revealing a low level of adaptive genetic variation. Although evidence for balancing selection, including positive selection and trans‐species polymorphism, was observed, these
Long F +8 more
europepmc +2 more sources
Bayesian total evidence dating reveals the recent crown radiation of penguins [PDF]
, 2016 The total-evidence approach to divergence-time dating uses molecular and morphological data from extant and fossil species to infer phylogenetic relationships, species divergence times, and macroevolutionary parameters in a single coherent framework ...
Drummond, Alexei J. +5 more
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International Journal for Parasitology: Parasites and Wildlife, 2022 In 2017, a mortality event affected Humboldt penguins at Chester Zoo (UK), which coincided with the diagnosis of avian malaria (AM) in some birds. AM is found worldwide wherever a competent mosquito vector is present, but the disease is particularly ...
Merit González-Olvera +7 more
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Outbreak of cryptosporidiosis in African penguins Spheniscus demersus [PDF]
Diseases of Aquatic Organisms, 2020 Cryptosporidiumspp. are parasitic intracellular protozoa that infect the digestive, respiratory, and urinary tracts of vertebrates. The disease affects many different avian species across all continents, and >25 species and genotypes ofCryptosporidiumhave been documented infecting birds.
Renata, Hurtado +7 more
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Contrasting patterns of selection between MHC I and II across populations of Humboldt and Magellanic penguins [PDF]
, 2016 Indexación: Web of ScienceThe 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
Dantas, GPM +7 more
core +1 more source
Memorias do Instituto Oswaldo Cruz, 1984 O material estudado foi coletado no "pinguim naufragado", Sphenicus magellanicus (Forster), na baia de Guanabara, Rio de Janeiro e cedido pela bióloga Carla Chediak.
Cláudia Portes Santos
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Feather Microbiota Landscapes: Biogeography and Phenology Shape Feather Microbiota Traits in a Migratory Seabird in a Subantarctic Ecosystem. [PDF]
Mol EcolABSTRACT It is known that phenological changes (i.e., behavioural and sometimes morphological and physiological traits that repeat annually) influence the wildlife gut microbiota. However, it remains largely unknown to what extent geographic variation could modulate the effect that phenology has on wildlife microbiota.
Ochoa-Sánchez M +6 more
europepmc +2 more sources