Results 151 to 160 of about 896 (181)

One or Three Gyrocotylideans (Platyhelminthes) in Chimaera monstrosa (Holocephali)?

The Journal of Parasitology, 1986
Between October 1981 and October 1984 1,136 Chimaera monstrosa from Norwegian waters harbored 1,361 gyrocotylideans. Fifteen were initially identified as Gyrocotyloides nybelini Fuhrmann, 1930, 33 as Gyrocotyle confusa van der Land and Dienske, 1968 and the remainder as Gyrocotyle urna Grube and Wagener in Wagener, 1852.
Judith A. Colin, H. Harford Williams, Odd Halvorsen   +2 more
openaire   +1 more source

The cardiac ultrastructure of Chimaera monstrosa L. (Elasmobranchii: Holocephali)

Cell and Tissue Research, 1979
The ultrastructure of the heart in Chimaera monstrosa L. is described. The endocardial and the epicardial cells are similar in the three cardiac regions. Myocardial cells show small variations. The myofibred, 4--6 microns thick, contains one or a few myofibrils. Each myosin filament is surrounded by six actin filaments.
openaire   +2 more sources

The fine structure of spermatozoa of Hydrolagus colliei (Chondrichthyes, Holocephali)

Journal of Ultrastructure Research, 1983
The ultrastructure of spermatozoa in Hydrolagus colliei is described. Basic similarities of structure to the sperm of the related elasmobranch fish are noted. The most significant features of sperm structure in Hydrolagus that differ from those of elasmobranch fish occur in the tail.
openaire   +2 more sources

Assessment of the dorsal fin spine for chimaeroid (Holocephali: Chimaeriformes) age estimation

Journal of Fish Biology, 2009
Previous attempts to age chimaeroids have not rigorously tested assumptions of dorsal fin spine growth dynamics. Here, novel imaging and data‐analysis techniques revealed that the dorsal fin spine of the spotted ratfish Hydrolagus colliei is an unreliable structure for age estimation.
L A K, Barnett, D A, Ebert, G M, Cailliet   +2 more
openaire   +2 more sources

Funktionsmorphologie der Nase vonChimaera monstrosa (Holocephali)

Zeitschrift für Morphologie der Tiere, 1973
Die vorliegenden Untersuchungen an der SeekatzeChimaera monstrosa behandeln die Funktionsmorphologie des nasolabialen Systems und die makroskopische Struktur des Geruchsorgans. 2. Die beiden auseren Offnungen der Nase liegen unmittelbar anteromedian zur Oberlippe und sind nur durch ein schmales Septum getrennt. 3.
openaire   +1 more source

Note on the terminal nerve in chimaeroid fishes (Holocephali; Chimaeridae)

2012
William Locy in 1905 on page 63 of his morphological and embryological account “On a newly recognized nerve connected to the fore-brain of selachians” mentions the “new nerve” or “supernumerary nerve” as it was termed before that time, tentatively traced upon dissection of the brain of Chimaera monstrosa.
Licht, Martin, Bartsch, Peter
openaire   +1 more source

Feinstruktur des Riechepithels von Chimaera monstrosa (Holocephali)

Marine Biology, 1973
1. Bei Chimaera monstrosa L. uberzieht das Riechepithel kontinuierlich den grosten Teil jeder olfactorischen Falte, einschlieslich der Sekundarfalten. Flimmerepithel, das keine scharfe Grenze zum Riechepithel aufweist, bedeckt nur die Faltenspitzen. 2.
openaire   +1 more source

On the ultrastructure of the sinus venosus in Chimara monstrosa L. (Elasmobranchii: Holocephali)

Zoomorphology, 1980
The wall of the sinus venosus in an elasmobranchian species, Chimaera monstrosa L. is described.
Ingvar Leiv Leknes, Thorvald Selmer Sætersdal   +1 more
openaire   +1 more source

The vascularization of the pituitary inChimaera monstrosa(Holocephali)

Sarsia, 1967
Abstract The vascularization of the pituitary region in Chimaera monstrosa L. (Holocephali) is described. There is a median eminence and a portal system connecting it with the anterior lobe. Lateral afferent veins bring blood from the lobi inferiores to the neuro-intermediate lobe. The “Rachendach-Hypophyse” is independently vascularized.
openaire   +1 more source

A preliminary review and in situ observations of the spookfish genus Harriotta (Holocephali: Rhinochimaeridae)

Ichthyological Research, 2019
The taxonomic status of two species of the spookfish genus Harriotta Goode and Bean 1895 is revised and discussed. On the basis of a literature review along with a comparison between the two species formerly considered valid, H. haeckeli Karrer 1972 is synonymized with H.
Naohide Nakayama, Mizuki Matsunuma, Hiromitsu Endo   +2 more
openaire   +1 more source