Results 111 to 120 of about 449 (162)

Asexual Reproduction and Environmental Predictability in Cestodes (Cyclophyllidea: Taeniidae) [PDF]

Evolution; International Journal of Organic Evolution, 1981
It is generally recognized that genetic diversity of offspring is a major benefit of sexual reproduction (Williams, 1975; Glesener and Tilman, 1978; but see Maynard Smith, 1978). If natural selection is an important factor in the evolution of life histories, organisms that reproduce more than once during the life cycle should be sexual in the phase ...
Janice Moore
exaly   +3 more sources

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Diversity of Dilepididae (Cestoda: Cyclophyllidea) revealed by cytogenetic analysis

Journal of Helminthology, 2006
AbstractKaryotypes of three dilepidid species: Molluscotaenia crassiscolex, Anomotaenia bacilligera and Dilepis undula, which have not been recorded previously, were studied using conventional Giemsa staining and comparative karyometric analysis. Twelve small biarmed chromosomes were observed in mitotic cells of M.
R, Petkeviciūte, R, Binkiene, J, Komisarovas   +2 more
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ASEXUAL REPRODUCTION IN CESTODES (CYCLOPHYLLIDEA: TAENIIDAE): ECOLOGICAL AND PHYLOGENETIC INFLUENCES

Evolution, 1987
Asexual reproduction, a rare trait among cestodes in general, occurs in the "larval" (metacestode) stage of species of the family Taeniidae. The distribution of this trait among taeniid species is not consistent with an ecological hypothesis of current environmental predictability.
Janice, Moore, Daniel R, Brooks
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Maintenance and Growth of Hymenolepis microstoma (Cestoda: Cyclophyllidea) In vitro

The Journal of Parasitology, 1967
Hymenolepis microstoma has been grown in vitro from the cysticercoid stage to the young tapeworm. A basal medium HM 67 has been established from stock solutions of Medium 115 (Berntzen and Mueller, 1964) and is composed of 6% component A, 28% component B:C:D:E:F (20:20:20:20: 5; v:v), 50% Earle's + 0.5% glucose, and 16% distilled water.
P H, De Rycke, A K, Berntzen
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[Cleavage and gastrulation in Microsomacanthus paramicrosoma (Cyclophyllidea, Cestoda)].

Parazitologiia, 1977
On the basis of hystological studies a description of fission and gastrulation in Microsomacanthus paramicrosoma (gasowska, 1931) is given. Eggs lacking morphological characters of polarity and symmetry display features of duet and spiral fission characteristic of lower groups of Turbellaria.
A A, Bazitov, E V, Liapkalo
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Regeneration of Tetrathyridia of Mesocestoides (Cestoda: Cyclophyllidea) In vivo and In vitro

Journal of Parasitology, 1968
Fragments of tetrathyridia of the cestode Mesocestoides, bearing one or more suckers, can regenerate in vivo and axenically in vitro a normal tetrathyridium which is capable of both asexual proliferation and strobilization. Naturally occurring fragments lacking a scolex apparently cannot regenerate a scolex; with experimental fragments lacking a scolex
exaly   +3 more sources

?????????? ?? ?????????? ?????????????? ???????? ???????????? ?????????????????? Amabiliidae (Cestoda, Cyclophyllidea)

2010
At the result of investigation of cestode collection including the material from the aquvatic birds of easten Ukrainian Polesye 57 cestode species were found. Six of them were from the family Amabiliidae. All species are new for Ukraine fauna. Joyexilepis acanthorhyncha, J. octacantha, J. pilatus, Ryjikovilepis dubininae, Tatria minor, T.
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Cyclophyllidea van Beneden in Braun, 1900

2020
NHM ...
Mariaux, J, Tkach, VV, Vasileva, GP, Waeschenbach, A, Beveridge, I, Dimitrova, Y, Haukisalmi, V, Greiman, SE, Littlewood, DT, Makarikov, AA, Phillips, AJ, Razafiarisolo, T, Widmer, V, Georgiev, BB   +13 more
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Revision of the genus Parvirostrum Fuhrmann, 1908 (Cestoda: Cyclophyllidea: Paruterinidae)

Systematic Parasitology, 2001
Redescriptions are presented of the type-materials of Parvirostrum reticulatum Fuhrmann, 1908 (type-species of Parvirostrum Fuhrmann, 1908) from Lepidocolaptes albolineatus (Passeriformes: Dendrocolaptidae) and of P. synallaxis (Mahon, 1957) n. comb. (syn.
B B, Georgiev, C, Vaucher
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Spermiogenesis and spermatozoon ultrastructure of the paruterinid cestode Notopentorchis sp. (Cyclophyllidea)

Parasitology Research, 2012
Ultrastructural characters of the spermiogenesis and mature spermatozoon of Notopentorchis sp. (Cestoda, Cyclophyllidea, Paruterinidae), a parasite from Apus affinis (Aves, Apodiformes, Apodidae) from Gabon, are described by means of transmission electron microscopy. Cytochemical analysis for detection of glycogen was applied.
Aneta, Yoneva, Céline, Levron, Pavel N, Nikolov, Yana, Mizinska, Jean, Mariaux, Boyko B, Georgiev   +5 more
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