Results 71 to 80 of about 827 (199)

Identification of the complete mitochondrial genome of the king penguin Aptenodytes patagonicus (Sphenisciformes: Spheniscidae: Aptenodytes)

open access: yesMitochondrial DNA. Part B. Resources, 2019
The complete mitochondrial genome of the king penguin Aptenodytes patagonicus was firstly determined. The mitogenome is 17,477 bp in length and contains 13 protein-coding genes (PCGs), 22 transfer RNA (tRNA) genes, 2 ribosomal RNA (rRNA) genes, and a ...
Jing Du   +6 more
doaj   +1 more source

Penguins are competent hosts of Haemoproteus parasites: the first detection of gametocytes, with molecular characterization of Haemoproteus larae

open access: yesParasites & Vectors, 2020
Background The majority of penguins (Sphenisciformes) have evolved in areas with weak or absent transmission of haemosporidian parasites and are usually naïve to avian haemosporidian infections.
Mizue Inumaru   +6 more
doaj   +1 more source

Environmental and Evolutionary Forces Shaping Penguin Geographic Limits

open access: yesJournal of Biogeography, Volume 52, Issue 9, September 2025.
ABSTRACT Aim Penguins are seabirds exclusively found in the Southern Hemisphere, with their existence dating back to the late Cretaceous. Despite their exceptional dispersal capabilities, which allow them to inhabit a wide range of environments—from polar regions to temperate zones, and even near the Equator—penguins are absent in the Northern ...
Amanda Mourão Santos   +1 more
wiley   +1 more source

Fig. 2 in The Basal Penguin (Aves: Sphenisciformes) Perudyptes Devriesi And A Phylogenetic Evaluation Of The Penguin Fossil Record

open access: yes, 2010
Fig. 2. Cranium of MUSM 889 in (A) dorsal view, (B) left lateral view, and (D) ventral view. Fragment of upper beak (C) in lateral view. Scale bar 5 1 cm.Published as part of <i>Ksepka, Daniel T.
Ksepka, Daniel T., Clarke, Julia A.
core   +1 more source

Aprosdokitos mikrotero gen. et sp. nov., the tiniest Sphenisciformes that lived in Antarctica during the Paleogene

open access: yes, 2020
A small humerus from Eocene levels of Seymour Island, Antarctica is assigned here to Aprosdokitos mikrotero sp. and gen. nov. (Aves, Sphenisciformes), based predominantly on its small size.
Acosta Hospitaleche, Carolina Ileana Alicia   +2 more
core  

Ecomorphological Analysis of the Bird Lumbosacral Organ in an Evolutionary Context

open access: yesJournal of Morphology, Volume 286, Issue 8, August 2025.
Our geometric morphometric analysis of 36 bird species reveals locomotor‐linked adaptations in the lumbosacral organ (LSO). Perching birds show proportionally larger LSOs, while aquatic species exhibit elongated vertebral canals. We demonstrate strong pelvic‐LSO covariation and significant phylogenetic signals, supporting the LSO's role in equilibrium ...
Idriss Pelletan   +2 more
wiley   +1 more source

Figure 8 in Evolution of the brain and sensory organs in Sphenisciformes: new data from the stem penguin Paraptenodytes antarcticus

open access: yes, 2012
Figure 8. Virtual endocasts of the brain and labyrinth of A, Paraptenodytes antarcticus (fossil stem penguin) and B, Aptenodytes patagonicus (king penguin) in lateral aspect, illustrating relative size of the labyrinth.Published as part of Ksepka, Daniel
Ksepka, Daniel T.   +4 more
core   +1 more source

第十三讲 游禽

open access: yes野生动物学报, 1985
企鹅目(Sphenisciformes)隶属于楔翼总目(Impennes)。本目只有一科:企鹅科(Spheniscidae)企鹅栖息于南半球,特别集中于南极大陆和亚南极附近的岛屿,是善于游泳和潜水的海鸟。企鹅的拉丁学名来自希腊文spheniskos,意思是“小的楔状物”,指其狭窄而呈鳍状的双翼好像楔状;英文penguin则是从威尔士两个古老字合并而来的,是“白头”的意思 ...
许维枢
doaj  

Same‐sex partnerships in birds: a review of the current literature and a call for more data

open access: yesJournal of Avian Biology, Volume 2025, Issue 3, May 2025.
Same‐sex sexual behaviour (SSB), encompassing actions such as courtship, pair bonding, and parenting between individuals of the same sex, has been observed across numerous taxa, including birds. Yet despite its widespread occurrence, SSB remains poorly understood, often dismissed as maladaptive or the result of errors in sex discrimination.
Natasha Gillies, Katrina Siddiqi-Davies
wiley   +1 more source

Fig. 16 in The Basal Penguin (Aves: Sphenisciformes) Perudyptes Devriesi And A Phylogenetic Evaluation Of The Penguin Fossil Record

open access: yes, 2010
Fig. 16. Strict consensus of 480 MPTs of 4494 steps from the analysis including the type B humerus (IB/P/B-0382) as a separate terminal.Published as part of <i>Ksepka, Daniel T. & Clarke, Julia A., 2010, The Basal Penguin (Aves: Sphenisciformes)
Ksepka, Daniel T., Clarke, Julia A.
core   +1 more source

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