Results 131 to 140 of about 1,359 (180)

Vascularization of the pituitary of the Australian lungfish and Neoceratodus forsteri

Acta Zoologica, 1999
The vascularization of the brain and the pituitary region of the Australian lungfish, Neoceratodus forsteri is described from serial section reconstruction. The distal lobe has no direct arterial blood supply and receives blood solely from a pituitary portal system basically similar to that of other sarcopterygians.
G N Hansen
exaly   +2 more sources

Scale structure in the Australian lungfish, Neoceratodus forsteri (Osteichthyes: Dipnoi).

Journal of morphology, 2015
Scales of the Australian lungfish, Neoceratodus forsteri, are secreted within the dermis by a capsule of scleroblasts, and enclosed in a pouch made of collagen fibers, in contact with the epidermis over the posterior third of the scale. Each scale grows from a focus, which represents the first formed part of the scale.
Kemp, Anne, Heaslop, Meg, Carr, Andrew
openaire   +5 more sources

Cephalic muscle development in the Australian lungfish,Neoceratodus forsteri

Journal of Morphology, 2017
AbstractLungfishes are the extant sister group of tetrapods. As such, they are important for the study of evolutionary processes involved in the water to land transition of vertebrates. The evolution of a true neck, that is, the complete separation of the pectoral girdle from the cranium, is one of the most intriguing morphological transitions known ...
Janine M. Ziermann, Alice M. Clement, Rolf Ericsson, Lennart Olsson   +3 more
openaire   +3 more sources

Ciliary cells in the epidermis of the larval Australian dipnoan, Neoceratodus

Zoological Journal of the Linnean Society, 1980
Newly hatched Australian lungfish, Neoceratodus forsteri KrefFt, develop a ciliary current over the skin surface which continues for more than six weeks of larval life. The gill surface under the opercula also becomes ciliated. The ciliary cells producing the current are found to develop in like manner to those in several amphibian embryos and larvae ...
Q Bone
exaly   +2 more sources

Studies on the queensland lungfish, neoceratodus forsteri (Krefft) ii. thermal acclimation [PDF]

, 1964
Six juvenile Neoceratodus of convenient size for respirometry (27–51 g) were available for study. Fish of this size are very rarely taken and the opportunity was used to examine the ability of Neoceratodus to undergo metabolic acclimation. Metabolic rate-temperature curves were constructed for fish with cold (18°C) and warm (25°C) thermal histories ...
Grigg, Gordon C., Grigg, G. C.
openaire   +5 more sources

Isolation and characterization of 21 polymorphic microsatellite loci in the iconic Australian lungfish, Neoceratodus forsteri, using the Ion Torrent next-generation sequencing platform

Conservation Genetics Resources, 2013
We isolated and characterized 21 microsatellite loci in the vulnerable and iconic Australian lungfish, Neoceratodus forsteri. Loci were screened across eight individuals from the Burnett River and 40 individuals from the Pine River. Genetic diversity was
Joel A Huey, Peter B Mather, David T Roberts   +2 more
exaly   +2 more sources

The apical ectodermal ridge in the pectoral fin of the Australian Lungfish (Neoceratodus forsteri): keeping the fin to limb transition in the fold

Acta Zoologica, 2009
The apical ectodermal ridge (AER) in Neoceratodus develops after an initial period of mesenchymal proliferation and outgrowth of the fin bud and persists until chondrogenesis of the stylopod and zeugopod is initiated. At this time, the lateral margins of
Zerina Johanson
exaly   +2 more sources

Homeobox genes in the Australian lungfish,Neoceratodus forsteri

Journal of Experimental Zoology, 1999
The aim of the present study was to determine whether the postulated gnathostome duplication from four to eight Hox clusters occurred before or after the split between the actinopterygian and sarcopterygian fish by characterizing Hox genes from the sarcopterygian lungfish, Neoceratodus forsteri.
T J, Longhurst, J M, Joss
openaire   +2 more sources

The adenohypophysis of the Australian lungfish, Neoceratodus forsteri—An immunocytological study

General and Comparative Endocrinology, 1990
The cell types in the adenohypophysis of Neoceratodus resemble closely those already described for Lepidosiren and Protopterus. Four of these were immunocytochemically identified as prolactin cells, gonadotropes, corticotropes, and melanotropes. Antiserum to bullfrog growth hormone could not distinguish between prolactin cells and somatotropes.
J M, Joss, M, Beshaw, S, Williamson, J, Trimble, R M, Dores   +4 more
openaire   +2 more sources

Ultrastructure of the integumental melanophores of the Australian lungfish, Neoceratodus forsteri

Cell and Tissue Research, 1975
The integumental melanophores of Australina lungfish, Neoceratodus forsteri, were examined by light and electron microscopy and found to possess essentially the same structural characteristics observed in other vertebrates. The epidermal melanophores are located in the intermediate epidermis and possess round perikarya and slender dendrites extending ...
H, Imaki, W, Chavin
openaire   +2 more sources