What's the difference between asexual and strobilation?
Asexual
Definition:
(a.) Having no distinct sex; without sexual action; as, asexual reproduction. See Fission and Gemmation.
Example Sentences:
(1) We hypothesize that a dynamic complex of sexual and clonal fishes appear to participate in a feedback process that maintains genetic diversity in both the sexual and asexual components.
(2) Changes in the fitness of harmful mutations may therefore impose a greater long-term disadvantage on asexual populations than those which are sexual.
(3) Secondary echinococcosis generates by asexual regressive metamorphosis of larval element intro larval forms.
(4) However, differences between the two groups were statistically significant only for P. falciparum asexual forms.
(5) The intermediate cells divide asexually by endodyogeny giving rise, on the one hand, to another population of intermediate cells, and on the other--to merozoites which divide no longer.
(6) A concentration of 3 x 10(-9) M halofantrine was lethal to both asexual parasites and gametocytes.
(7) Light is necessary for asexual sporulation in Aspergillus nidulans but will elicit conidiation only if irradiation occurs during a critical period of development.
(8) In the other 17 cases followed up to day 21, six were found again with asexual parasites between day 9 and day 14 and a seventh on day 21.
(9) Improved methods were developed for the determination of reduced glutathione (GSH), glutathione disulfide (GSSG), and protein-glutathione disulfide (PSSG) and applied to determine the glutathione status at various stages of the asexual life cycle for the band strain of Neurospora crassa.
(10) A large variety of fungi are known to produce asexual spores known as arthroconidia.
(11) The selection equations for sexual and asexual reproduction of genotypes corresponding to mixed strategies are analysed.
(12) These results are consistent with genetic data suggesting that stuA gene function is required from the very earliest events of asexual reproduction until completion of conidiophore development, but is not specifically required for differentiation of conidia.
(13) Protoplasts were prepared from asexual spores that harbor one or two mutations in the structural gene for tryptophan synthetase.
(14) They also occurred in the immunocytic systems after the first and during the second asexual multiplication and during the relatively late cystic phase of the parasite in the brain.
(15) Five days after therapy with 600 mg chloroquine base, the asexual parasitemia in the American increased 40-fold, but cleared after treatment with 1,500 mg chloroquine base.
(16) We have tested the effect of 2DG on Candida albicans to see if it could be used to obtain GalK- mutants in this diploid asexual yeast.
(17) (owl monkey) is one of the WHO recommended experimental models for Plasmodium falciparum blood stage infection, especially relevant for vaccination studies with asexual blood stage antigens of this parasite.
(18) Cyclic parthenogens have made the transition to obligate asexuality with high frequency, but there is little evidence to support the argument (Williams, 1975) that such shifts result from the relaxation of the short-term selection pressures supposedly necessary to sustain the sexual phase of the life cycle.
(19) Malaria parasites of the genus Plasmodium spend much of their asexual life cycle inside the erythrocytes of their vertebrate hosts.
(20) We established and analyzed human T lymphocyte clones induced by crude Plasmodium falciparum antigens of schizont-enriched asexual blood stages.
Strobilation
Definition:
(n.) The act or phenomenon of spontaneously dividing transversely, as do certain species of annelids and helminths; transverse fission. See Illust. under Syllidian.
Example Sentences:
(1) The cestode either failed to establish or to grow; if the worms were already strobilate when inflammation developed then destrobilation occurred.
(2) Gene expression and its regulation was studied in the rat tapeworm, Hymenolepis diminuta, during strobilization.
(3) In juvenile worms from rats, the extension of the WGA- and SBA-positive region of the strobilation zone increased in length with the development of the worms.
(4) Mongolian gerbils, Meriones unguiculatus, when treated at intervals of 2-6 days with prednisolone tertiary butyl acetate, sustained infection with adult Echinococcus multilocularis in the small intestine, with the tapeworm exhibiting normal strobilation and egg production as in the natural canid host.
(5) Echinococcus multilocularis survived, strobilated and matured sexually in the small intestine of 6-week-old male golden hamsters that were either non-treated or treated with prednisolone tertiary-butylacetate (PTBA), following oral administration of 20 000 protoscoleces.
(6) It is proposed to estimate coefficient of reproduction intensity as the ratio of egg output per unit of time and maximum egg number in a mature strobile.
(7) There were noted differences in of longitudinal trunks in different species and in the specimens of the same species but from different hosts, the width of the strobile being the same.
(8) On the basis of the degree of development of the genital organs zonation of the worm's strobile has been specified.
(9) Scolex growth rate was linear throughout metacestode and adult development, but growth rate in body length was diphasic, punctuated by change of hosts, associated with strobilization.
(10) Phalaropus lobatus from this water body was also infected (13.7) with this cestode, the infection intensity being from 1 to 15 strobiles in one bird.
(11) The number of eggs in strobiles has been estimated for the maturation period.
(12) In experimentally infected puppies, parasite development was noted as follows: strobilation and initial differentiation of the genital primordia on day 7 postinoculation (p.i.
(13) The presence of the carbohydrates is discussed with respect to the relative resistance of the scolex-strobilation zone of H. diminuta to immune rejection.
(14) The results indicated a post-transcriptional regulation of gene expression during strobilization in this parasite.
(15) Binding sites for lectins from Abrus precatorius (APA), Arachis hypogaea (PNA), Glycine max (SBA) and for wheat germ agglutinin (WGA) and succinylated WGA were located on the scolex and strobilation zone.
(16) Scolexes of adult cestodes are innervated with 5 pairs of longitudinal nerve trunks, the number of which in the strobile gradually increases up to 17 pairs in species of Eubothrium and up to 60 pairs (in the wildest parts of the strobile) in species of Diphyllobothrium.
(17) Extracts of the strobilate and cysticercus forms of the same species gave identical results.
(18) Although the tentacles of the polyp and the rhopalia of the medusa are probably homologous, the development of pacemaker activity during strobilation is not a smooth transition from tentacle contraction potentials (TCPs) to marginal ganglion potentials (MGPs).
(19) For strobilization and maturation of H. microstoma in vitro, the presence of some kind of heme protein seems essential.