Banded penguin (Spheniscus)
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA939132 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:RNA-seq data of non-pregnant and peri-implantation stage nine-banded armadillo (Dasypus novemcinctus) uterus
2020-07-01 | GSE120510 | GEO
Project description:A novel alphaherpesvirus associated with fatal diseases in banded Penguins
| PRJEB15151 | ENA
Project description:Fractionation of normal and abnormal African penguin samples via capillary electrophoresis demonstrated a change from a left skewed composition to a right skewed composition. Further analysis of this fraction via mass spectrometry revealed key proteins associated with this skewed.
2021-09-09 | PXD018096 | Pride
Project description:Phylogenomics resolves the ancient and rapid radiation of banded newts (genus Ommatotriton)
| PRJNA1096730 | ENA
Project description:Heart development is known to be influenced by haemodynamics, however the effects of abnormal load on gene expression are not clearly defined. To determine the hearts transcriptional response to stress, a model of haemodynamic alteration, outflow tract (OFT) banding, was employed in the chick embryo at HH21. Stereological and expression analysis were performed at HH29, with targeted expression studies at HH35. We defined a phenotype of left sided heart dilation and performed RNA sequencing on OFT-banded hearts compared to Sham controls. Globin transcripts were depleted in the RNA during library preparation, and 28 differentially expressed genes were identified. Expression appeared to represent a mechanism of cardioprotection with calcium sequestering, metabolic and developmental genes highlighted. Significant reductions in apoptosis were also seen. We have presented a model of left sided dilation in OFT-banded hearts and found differential expression of genes that may be associated with stress and maintaining cardiac output.
2020-03-16 | GSE120498 | GEO
Project description:Mitogenomic analysis of Banded Linsang
| PRJEB25526 | ENA
Project description:The African penguin, Spheniscus demersus, is listed as Endangered by the IUCN Red List of Threatened Species due to the drastic reduction in population numbers over the last 20 years. To date, the only studies on immunogenetic variation in penguins have been conducted on the major histocompatibility complex (MHC) genes. It was shown in humans that up to half of the genetic variability in immune responses to pathogens are located in non-MHC genes. Toll-like receptors (TLRs) are now increasingly being studied in a variety of taxa as a broader approach to determine functional genetic diversity. In this study, we confirm low genetic diversity in the innate immune region of African penguins similar to that observed in New Zealand robin that has undergone several severe population bottlenecks. Single nucleotide polymorphism (SNP) diversity across TLRs varied between ex situ and in situ penguins with the number of non-synonymous alterations in ex situ populations (n = 14) being reduced in comparison to in situ populations (n = 16). Maintaining adaptive diversity is of vital importance in the assurance populations as these animals may potentially be used in the future for re-introductions. Therefore, this study provides essential data on immune gene diversity in penguins and will assist in providing an additional monitoring tool for African penguin in the wild, as well as to monitor diversity in ex situ populations and to ensure that diversity found in the in situ populations are captured in the assurance populations.
| S-EPMC5070850 | biostudies-literature
Project description:The African Penguin (Spheniscus demersus) is a highly social and vocal seabird. However, currently available descriptions of the vocal repertoire of African Penguin are mostly limited to basic descriptions of calls. Here we provide, for the first time, a detailed description of the vocal behaviour of this species by collecting audio and video recordings from a large captive colony. We combine visual examinations of spectrograms with spectral and temporal acoustic analyses to determine vocal categories. Moreover, we used a principal component analysis, followed by signal classification with a discriminant function analysis, for statistical validation of the vocalisation types. In addition, we identified the behavioural contexts in which calls were uttered. The results show that four basic vocalisations can be found in the vocal repertoire of adult African Penguin, namely a contact call emitted by isolated birds, an agonistic call used in aggressive interactions, an ecstatic display song uttered by single birds, and a mutual display song vocalised by pairs, at their nests. Moreover, we identified two distinct vocalisations interpreted as begging calls by nesting chicks (begging peep) and unweaned juveniles (begging moan). Finally, we discussed the importance of specific acoustic parameters in classifying calls and the possible use of the source-filter theory of vocal production to study penguin vocalisations.
| S-EPMC4116197 | biostudies-literature
Project description:The African penguin is a nesting seabird endemic to southern Africa. In penguins of the genus Spheniscus vocalisations are important for social recognition. However, it is not clear which acoustic features of calls can encode individual identity information. We recorded contact calls and ecstatic display songs of 12 adult birds from a captive colony. For each vocalisation, we measured 31 spectral and temporal acoustic parameters related to both source and filter components of calls. For each parameter, we calculated the Potential of Individual Coding (PIC). The acoustic parameters showing PIC ≥ 1.1 were used to perform a stepwise cross-validated discriminant function analysis (DFA). The DFA correctly classified 66.1% of the contact calls and 62.5% of display songs to the correct individual. The DFA also resulted in the further selection of 10 acoustic features for contact calls and 9 for display songs that were important for vocal individuality. Our results suggest that studying the anatomical constraints that influence nesting penguin vocalisations from a source-filter perspective, can lead to a much better understanding of the acoustic cues of individuality contained in their calls. This approach could be further extended to study and understand vocal communication in other bird species.
| S-EPMC4658557 | biostudies-literature
Project description:While safety of fasting therapy is debated in humans, extended fasting occurs routinely and safely in wild animals. To do so, food deprived animals like breeding penguins anticipate the critical limit of fasting by resuming feeding. To date, however, no molecular indices of the physiological state that links spontaneous refeeding behaviour with fasting limits had been identified. Blood proteomics and physiological data reveal here that fasting-induced body protein depletion is not unsafe “per se”. Indeed, incubating penguins only abandon their chick/egg to refeed when this state is associated with metabolic defects in glucose homeostasis/fatty acid utilization, insulin production and action, and possible renal dysfunctions. Our data illustrate how the field investigation of “exotic” models can be a unique source of information, with possible biomedical interest.
2017-01-02 | PXD004808 | Pride