منابع مشابه
Inventory and phylogenetic analysis of meiotic genes in monogonont rotifers.
A long-standing question in evolutionary biology is how sexual reproduction has persisted in eukaryotic lineages. As cyclical parthenogens, monogonont rotifers are a powerful model for examining this question, yet the molecular nature of sexual reproduction in this lineage is currently understudied. To examine genes involved in meiosis, we generated partial genome assemblies for 2 distantly rel...
متن کاملHopf bifurcation in a structured population model for the sexual phase of monogonont rotifers.
We are studying a population of monogonont rotifers in the context of non-linear age-dependent models. In the sexual phase of their reproductive cycle we consider the population structured by age, and composed of three subclasses: virgin mictic females, mated mictic females, and haploid males. The model system has a unique stationary population density which is stable as long as a parameter, re...
متن کاملA mathematical model for the phase of sexual reproduction in monogonont rotifers.
Recently, the optimal sex allocation in monogonont rotifers is studied, and, as a closely related question, the relative frequencies of the relevant types of mictic females. The authors focus on the evolution of the age at which young mictic females lose their fertilization susceptibility and they address the threshold age of fertilization that maximizes resting egg production. Assuming that a ...
متن کاملTrehalose in desiccated rotifers: a comparison between a bdelloid and a monogonont species.
In response to drought bdelloid and monogonont rotifers undergo anhydrobiosis and are assumed to synthesize protective chemicals, which are commonly sugars. In contrast to most anhydrobionts, bdelloids have earlier been shown to lack trehalose as protective chemical, and more importantly to lack trehalose synthase (tps) genes. It remains to be assessed if the absence of trehalose is a character...
متن کاملBdelloid rotifers revisited.
S exual reproduction is one of the most striking features of the biological world. The great majority of the animals and plants with which we are most familiar reproduce at least part of the time by means of sexual reproduction with meiosis, recombination, and fertilization. But many eukaryotes reproduce asexually part of the time, and some are exclusively asexual (1, 2). Two articles in a rece...
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ژورنال
عنوان ژورنال: Hydrobiologia
سال: 1983
ISSN: 0018-8158,1573-5117
DOI: 10.1007/bf00045956