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6 results for “Spheniscus humboldti”
Fig. 2 in Molecular and epidemiological surveillance of Plasmodium spp. during a mortality event affecting Humboldt penguins (Spheniscus humboldti) at a zoo in the UK
Fig. 2. Histopathology associated with mortality of a Humboldt penguin (Spheniscus humboldti) infected with Plasmodium sp. Penguin paraffinembedded heart tissue section (5 μm) stained with haematoxylin and eosin a. Four sites of chromogenic in situ hybridization with a Plasmodium-specific probe occurred in what appeared to be cardiac macrophages. Magnification: x10. b. Same Penguin heart tissue sections inspected under light microscopy. Magnification: x100. Exoerythrocytic meronts are seen breaking out of a cardiac macrophage (ellipse).
Fig. 3 in Molecular and epidemiological surveillance of Plasmodium spp. during a mortality event affecting Humboldt penguins (Spheniscus humboldti) at a zoo in the UK
Fig. 3. Temporal distribution of mosquito and Plasmodium spp. prevalence at Chester Zoo between May and November 2017. Continuous top line: total number of mosquitoes collected on a weekly basis; Continuous bottom line: total number of Plasmodium infections; Dashed line: parasite prevalence estimated as a proportion of infected mosquitoes of the total captured on a weekly basis.
Fig. 1 in Molecular and epidemiological surveillance of Plasmodium spp. during a mortality event affecting Humboldt penguins (Spheniscus humboldti) at a zoo in the UK
Fig. 1. Mosquito abundance and Plasmodium prevalence compared at ten sampling sites across Chester Zoo. The Chester Zoo site (zoo perimeter is outlined) overlaid with a heat map of total mosquito numbers trapped at 10 sampling sites. Locations of traps are indicated by numbers 1–7, 10–12 inclusive. The location of the penguin exhibit in 2017 is indicated by a penguin symbol. a. Mosquito abundance. b. Plasmodium prevalence in trapped mosquitoes. Heat maps were generated using Heatmapper with a Gaussian radius multiplier of 1.
Fig. 4 in Molecular and epidemiological surveillance of Plasmodium spp. during a mortality event affecting Humboldt penguins (Spheniscus humboldti) at a zoo in the UK
Fig. 4. Maximum likelihood phylogeny of Plasmodium spp. cytb sequences. The phylogeny was estimated from a 378bp multiple sequence alignment using a GTR+Γ+І model (α = 0.488; proportion of invariant sites = 0.248). The tree is rooted with an outgroup of Leucocytozoon sequences (boxed). Node accuracy is indicated by an SH-like log-Likelihood ratio metric; bootstrap values greater than 0.5 are displayed in the tree. Novel sequences obtained in this study are shaded with their corresponding reference sequence; P. matutinum (MK443241), P. vaughani (MK652243) and P. relictum (JN164731). The clusters contain sequences derived from penguins, mosquitoes or wild birds, which is indicated by a penguin, mosquito or a bird symbol. One wild bird sequence is present in the P. matutinum cluster (OM912814); and three (MW814062, MW814149, MW814045), two (MW814453, MW814028) and two (MW814503, MW814500) mosquito sequences are present in the P. matutinum, P vaughani and P. relictum clusters respectively. The rest of the sequences in those clusters correspond to 23 novel sequences from penguins infected in the UK, indicating their origin (CZ: Chester Zoo, LZ: London Zoo, PZ: Paignton Zoo, BZ: Blackpool Zoo, CWP: Cotswold Wildlife Park) and year of sampling, if not 2017. Other shade sequences correspond to recognized morphospecies. P. vaughani cluster represents 145 novel sequences, P. matutinum cluster represents 345 novel sequences and P. relictum clusters represents 31 novel sequences. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
Efecto de factores ambientales sobre el comportamiento de sumersión en pingüinos (Spheniscus humboldti) en cautiverio.
<p><strong>El estudio de los factores ambientales sobre el comportamiento animal es de suma importancia para comprender cómo las condiciones pueden llegar a afectar el bienestar diario de los animales. En el presente estudio se evaluó el efecto de factores ambientales sobre el comportamiento de sumersión en pingüinos (Spheniscus humboldti) en cautiverio, investigando su relación con variables ambientales y conteo de visitantes. El muestreo fue llevado a cabo en el Parque Zoológico Nacional La Aurora. Se realizaron conteos de pingüinos en agua y tierra, mediciones de variables ambientales (temperatura, decibeles, humedad, presión, y velocidad del viento), conteo de visitantes cercanos al recinto, y el observador como un efecto. Los datos obtenidos fueron analizados por medio de modelos lineales, en donde se encontró que la húmedad y la temperatura tiene un efecto claro positivo sobre la fracción de pingüinos en el agua. Así mismo, el número de visitantes tiene un efecto claro negativo sobre la fracción de pingüinos en el agua. Este estudio es un proyecto en conjunto con los cursos de Biometría General y Comportamiento Animal. El cual, sienta las bases para comprender los procesos de termorregulación en esta especie y cómo esto se relaciona con los niveles de bienestar en animales en situaciones de cautiverio. </strong></p> <p> </p>
Use of rapid assessments of Humboldt penguin Spheniscus humboldti bycatch in Peru and Chile to help identify conservation priorities
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