Results 41 to 50 of about 1,771 (171)

Aestivation induces widespread transcriptional changes in the African lungfish

open access: yesFrontiers in Genetics, 2023
Aestivation is a special ability possessed by some animals to cope with hot and dry environments utilizing dormancy. At a macroscopic level, dormant animals stop moving and eating.
Yuhan Niu   +11 more
doaj   +1 more source

Heart and Circulation of the African Lungfish [PDF]

open access: yesCirculation Research, 1969
Cardiovascular structure and function were studied in the African lungfish, Protopterus aethiopicus , by a combination of anatomical and physiological techniques. Particular emphasis was placed on mechanisms which operate under natural conditions in which air-breathing alternates with water-breathing.
J P, Szidon   +3 more
openaire   +2 more sources

A diverse Late Cretaceous vertebrate tracksite from the Winton Formation of Queensland, Australia [PDF]

open access: yesPeerJ, 2021
The Upper Cretaceous ‘upper’ Winton Formation of Queensland, Australia is world famous for hosting Dinosaur Stampede National Monument at Lark Quarry Conservation Park, a somewhat controversial tracksite that preserves thousands of tridactyl dinosaur ...
Stephen F. Poropat   +7 more
doaj   +2 more sources

Leucism in South American Lungfishes Lepidosiren paradoxa Fitzinger, 1837 (Osteichthyes, Dipnoi, Lepidosirenidae) from Argentina

open access: yesBrazilian Journal of Veterinary Pathology, 2020
The present study reports a case of leucism in South American Lungfish Lepidosiren paradoxa captured in Corrientes, Argentina. It was observed a change in cutaneous pigmentation, and it was concluded that it was leucism and not albinism, since there was ...
Luis A. Romano, Virgínia F. Pedrosa
doaj   +1 more source

The cranial endocast of Dipnorhynchus sussmilchi (Sarcopterygii: Dipnoi) and the interrelationships of stem-group lungfishes [PDF]

open access: yesPeerJ, 2016
The first virtual cranial endocast of a lungfish from the Early Devonian, Dipnorhynchus sussmilchi, is described. Dipnorhynchus, only the fourth Devonian lungfish for which a near complete cranial endocast is known, is a key taxon for clarifying ...
Alice M. Clement   +3 more
doaj   +2 more sources

Structural and functional divergence of growth hormone-releasing hormone receptors in early sarcopterygians: lungfish and Xenopus. [PDF]

open access: yesPLoS ONE, 2013
The evolutionary trajectories of growth hormone-releasing hormone (GHRH) receptor remain enigmatic since the discovery of physiologically functional GHRH-GHRH receptor (GHRHR) in non-mammalian vertebrates in 2007.
Janice K V Tam   +2 more
doaj   +1 more source

Investigation of the activity of transposable elements and genes involved in their silencing in the newt Cynops orientalis, a species with a giant genome

open access: yesScientific Reports, 2021
Caudata is an order of amphibians with great variation in genome size, which can reach enormous dimensions in salamanders. In this work, we analysed the activity of transposable elements (TEs) in the transcriptomes obtained from female and male gonads of
Federica Carducci   +6 more
doaj   +1 more source

Early evolution of the lungfish pectoral fin endoskeleton: evidence from the Middle Devonian (Givetian) Pentlandia macroptera

open access: yesFrontiers in Earth Science, 2014
As the closest living relatives of tetrapods, lungfishes are frequently used as extant models for exploring the fin-to-limb transition. These studies have generally given little consideration to fossil taxa.
Emma eJude   +3 more
doaj   +1 more source

Basal jawed vertebrate phylogenomics using transcriptomic data from Solexa sequencing. [PDF]

open access: yesPLoS ONE, 2012
The traditionally accepted relationships among basal jawed vertebrates have been challenged by some molecular phylogenetic analyses based on mitochondrial sequences.
Ming Chen   +3 more
doaj   +1 more source

Age structure of the Australian lungfish (Neoceratodus forsteri).

open access: yesPLoS ONE, 2019
The Australian lungfish has been studied for more than a century without any knowledge of the longevity of the species. Traditional methods for ageing fish, such as analysis of otolith (ear stone) rings is complicated in that lungfish otoliths differ ...
Stewart J Fallon   +10 more
doaj   +1 more source

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