Results 121 to 130 of about 302 (145)
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Parasitology Research, 2014
The ultrastructure of the haptoral clamps of the chimaericolid monogenean Chimaericola leptogaster, a basal polyopisthocotylean from the gills of a holocephalan fish, is described. These clamps are characterized by the presence of two muscle blocks interrupted mid-anteriorly and mid-posteriorly and different kinds of hard structures: a single median ...
Larisa G, Poddubnaya +2 more
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The ultrastructure of the haptoral clamps of the chimaericolid monogenean Chimaericola leptogaster, a basal polyopisthocotylean from the gills of a holocephalan fish, is described. These clamps are characterized by the presence of two muscle blocks interrupted mid-anteriorly and mid-posteriorly and different kinds of hard structures: a single median ...
Larisa G, Poddubnaya +2 more
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Canadian Journal of Zoology, 1974
The anterior and posterior attachment organs of three species of monogeneans, Diclybothrium armatum Leuckart, 1835, Neodiscocotyle carpioditis Dechtiar, 1967, and Mazocraeoides olentangiensis Sroufe, 1958, were examined in whole-mount light-microscope preparations, and by scanning electron microscopy (SEM).
K A, Wright, A, Dechtiar
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The anterior and posterior attachment organs of three species of monogeneans, Diclybothrium armatum Leuckart, 1835, Neodiscocotyle carpioditis Dechtiar, 1967, and Mazocraeoides olentangiensis Sroufe, 1958, were examined in whole-mount light-microscope preparations, and by scanning electron microscopy (SEM).
K A, Wright, A, Dechtiar
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Parasitology Research, 2022
The Levant Basin is in many ways the world's most invaded marine ecosystem owing to the existence of the man-made Suez Canal. The invasion of free-living organisms through this pathway is increasingly documented and monitored in the past two decades, and their ecological impact recognized.
S B-S, Rothman, A, Diamant, M, Goren
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The Levant Basin is in many ways the world's most invaded marine ecosystem owing to the existence of the man-made Suez Canal. The invasion of free-living organisms through this pathway is increasingly documented and monitored in the past two decades, and their ecological impact recognized.
S B-S, Rothman, A, Diamant, M, Goren
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International Journal for Parasitology, 1987
Abstract Ultrastructural studies were carried out on the surface of Vallisia indica , found on the gills of Scomberoides commersonianus in the Indian ocean. Tegumental serrations present on the hump and on the dorsal and ventro-lateral surfaces of the hindbody lie in the same plane as the secondary gill lamellae and may provide anchorage against ...
P. Ramasamy +2 more
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Abstract Ultrastructural studies were carried out on the surface of Vallisia indica , found on the gills of Scomberoides commersonianus in the Indian ocean. Tegumental serrations present on the hump and on the dorsal and ventro-lateral surfaces of the hindbody lie in the same plane as the secondary gill lamellae and may provide anchorage against ...
P. Ramasamy +2 more
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[Hypothesis of the biogeographical origin of Diplozoon (Monogenea, Polyopisthocotylea)].
Annales de parasitologie humaine et comparee, 1988The evolutionary geographic origin of Diplozoon and Octomacrum (Monogenea, Polyopisthocotylea) is discussed. Diplozoon occurs in Eurasia and Africa, whereas the distribution of Octomacrum is limited to North-America. These two monogeneans likely had a common progenitor originating from the Pacific.
A, Lambert, N, Le Brun
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Annales de parasitologie humaine et comparee, 1984
The middle region of the spermatozoon of Hexostoma exhibits two 9 + "1" axonemes, the nucleus, the mitochondrion, and cortical longitudinal microtubules. The ultrastructure is similar to that of other Polyopisthocotylean monogeneans and this confirms the position of the family Hexostomatidae within Polyopisthocotyleans.
J L, Justine, X, Mattei
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The middle region of the spermatozoon of Hexostoma exhibits two 9 + "1" axonemes, the nucleus, the mitochondrion, and cortical longitudinal microtubules. The ultrastructure is similar to that of other Polyopisthocotylean monogeneans and this confirms the position of the family Hexostomatidae within Polyopisthocotyleans.
J L, Justine, X, Mattei
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Veterinary Research Communications, 2006
Sharpsnout bream (Diplodus puntazzo) has been used in Adriatic aquaculture for less than a decade, but the decreasing trend of rearing this species will probably result in its complete substitution by more exploited sea bream (Sparus aurata). Only two facilities still rear both fish species in neighbouring cages in monoculture.
Mladineo, Ivona, Maršić-Lučić, Jasna
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Sharpsnout bream (Diplodus puntazzo) has been used in Adriatic aquaculture for less than a decade, but the decreasing trend of rearing this species will probably result in its complete substitution by more exploited sea bream (Sparus aurata). Only two facilities still rear both fish species in neighbouring cages in monoculture.
Mladineo, Ivona, Maršić-Lučić, Jasna
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The Journal of Parasitology, 1968
Electron microscope observations have been made of the cecal epithelium of the sanguinivorous gill fluke Diclidophora merlangi (Monogenea: Polyopisthocotylea). The epithelium comprises two distinct cell types: pigmented hematin cells and flat, often branched, and extensive, connecting cells. The two types of cell are arranged alternately along the ceca
D. W. Halton +2 more
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Electron microscope observations have been made of the cecal epithelium of the sanguinivorous gill fluke Diclidophora merlangi (Monogenea: Polyopisthocotylea). The epithelium comprises two distinct cell types: pigmented hematin cells and flat, often branched, and extensive, connecting cells. The two types of cell are arranged alternately along the ceca
D. W. Halton +2 more
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Journal of Ultrastructure Research, 1985
Diplozoon is known to display an exceptional biology of reproduction: the hermaphroditic adults are permanently fused together and their genital ducts communicate. In contrast to all other polyopisthocotylean monogeneans in which the spermatozoa show an homogeneous biflagellate structure, the spermatozoon of Diplozoon is aflagellate.
J L, Justine, N, Le Brun, X, Mattei
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Diplozoon is known to display an exceptional biology of reproduction: the hermaphroditic adults are permanently fused together and their genital ducts communicate. In contrast to all other polyopisthocotylean monogeneans in which the spermatozoa show an homogeneous biflagellate structure, the spermatozoon of Diplozoon is aflagellate.
J L, Justine, N, Le Brun, X, Mattei
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Parasitology Research, 1996
Transmission electron microscope studies of the tegument of the tropical marine fish monogenean parasite Pseudothoracocotyla indica describe surface specialisations and detail the ultrastructure of the tegument and the haptor. The tegument consists of a syncytium, numerous electron-dense granules, electron-lucent vesicles and large multivesicular ...
G P, Brennan, P, Ramasamy
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Transmission electron microscope studies of the tegument of the tropical marine fish monogenean parasite Pseudothoracocotyla indica describe surface specialisations and detail the ultrastructure of the tegument and the haptor. The tegument consists of a syncytium, numerous electron-dense granules, electron-lucent vesicles and large multivesicular ...
G P, Brennan, P, Ramasamy
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