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Biology of the South American Lungfi sh, Lepidosiren paradoxa
, 2016 Lepidosiren paradoxa, locally known as pirambóia, belongs to the order Dipnoi, or true lungfishes. Th is group includes two other genera: a single Australian species of Neoceratodus (N.
Lopes, Nilva Pereira +8 more
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The Development of Lepidosiren paradoxa
Journal of Cell Science, 1902ABSTRACT In the following pages I give an account of the chief results obtained from my investigation of the development of Lepidosiren, in so far as they relate to the skin and certain organs associated with it. Some structures which ought logically to be described now have been deliberately omitted: such are the external gills, which I
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Hypothalamic-hypophysial relationships in the South American lungfish Lepidosiren paradoxa
General and Comparative Endocrinology, 1973Abstract An analysis of the anatomical relations between the hypothalamus and the hypophysis of the South American lungfish Lepidosiren paradoxa , has shown the coexistence of peptidergic fibers which end on the portal vessels of the median eminence and a direct adrenergic innervation of the glandular cells of the adenohypophysis.
D, Zambrano, F C, Iturriza
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Morphology of the gill epithelium of the Lungfish, Lepidosiren paradoxa
Cell and Tissue Research, 1974The gills of Lepidosiren are very much reduced, consisting of a few lobe-like filaments. The gill epithelium differs from most other fish in being 4–7 layers thick. Three varieties of cell are described which occur in the inner epithelial layers. It is suggested that these represent stages in the synthesis of a granular secretory product.
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Zeitschrift f�r Zellforschung und mikroskopische Anatomie, 1972
The neurohypophysis of the South American lungfish Lepidosiren paradoxa has been studied with light and electron microscopy, including the Falck-Hillarp technique for catecholamines. The pars nervosa hypophyseos is a well-marked, dorsally located subdivision of the pituitary gland composed of lobes or follicles, each one constituted of a central core ...
D, Zambrano, F C, Iturriza
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The neurohypophysis of the South American lungfish Lepidosiren paradoxa has been studied with light and electron microscopy, including the Falck-Hillarp technique for catecholamines. The pars nervosa hypophyseos is a well-marked, dorsally located subdivision of the pituitary gland composed of lobes or follicles, each one constituted of a central core ...
D, Zambrano, F C, Iturriza
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Topological analysis of the brain stem of the lungfish Lepidosiren paradoxa
Journal of Comparative Neurology, 1979AbstractThe ventricular sulcal pattern and the cellular structure of the brain stem of the lungfish Lepidosiren paradoxa have been studied in transversely cut Nissl and Bodian stained sections. Five longitudinal sulci, the sulcus medianus inferior, the sulcus intermedius ventralis, the sulcus limitans, the sulcus intermedius dorsalis and the sulcus ...
F, Thors, R, Nieuwenhuys
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NEUROHYPOPHYSIAL HORMONES OF THE SOUTH AMERICAN LUNGFISH LEPIDOSIREN PARADOXA
Journal of Endocrinology, 1966Abstract Neurohypophysial hormones have been investigated in both the Australian lungfish (Follett & Heller, 1963, 1964) and the African lungfish (Follett & Heller, 1962, 1963, 1964; Sawyer & van Dyke, 1963). The African lungfishes (Protopterus aethiopicus) used by Follett & Heller (1964) had been caught in Lake ...
B T, Pickering, S, McWatters
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Testosterone-induced development of limb gills of the lungfish, Lepidosiren paradoxa
Comparative Biochemistry and Physiology Part A: Physiology, 1973Abstract 1. 1. Parenteral administration of testosterone enanthate in the lungfish, Lepidosiren paradoxa , induces growth of pectoral and pelvic hindlimb vascular filaments. 2. 2. The filaments have the microstructure of primitive gills, and are comparable to the nuptial developments of the male in the Paraguayan Chaco described by ...
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Respiratory Function in the South American Lungfish, Lepidosiren Paradoxa (Fitz)*
Journal of Experimental Biology, 1967ABSTRACT Few animal species have aroused as much excitement upon their discovery as the South American lungfish. Its possession of distinct piscine as well as amphibian characters made the animal a link in the transition of vertebrate life from water breathing to air breathing.
K, Johansen, C, Lenfant
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VII.—Note on the Sympathetic Nervous System of Lepidosiren paradoxa
Proceedings of the Royal Society of Edinburgh, 1929Up to the present time no sympathetic nervous system has been described in Lepidosiren paradoxa, and the following note is an attempt to fill this gap in our knowledge.
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