Asexual reproduction in nonmarine ostracods

Article Abstract:

Nonmarine ostracods repeatedly demonstrate the evolution of asexual reproduction. Clonal diversity may be maintained through ecological differentiation and hybridization between asexual males and females of the same or related species. Molecular data of ancient species suggest some clonal lineages may exceed 5 mil years. Darwinula stevensoni has apparently been without gender for over 100 mil years.

Hybridization, Parthenogenesis, Ostracoda, Ostracods

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Asexual sporulation in Aspergillus nidulans

Article Abstract:

Asexual sporulation is a common reproductive mode for fungi, including several medically, industrially and agriculturally significant species. Genetic mechanisms to control the process have been studied in Aspergillus nidulans and Neurospora crassa, both ascomycetes. The genetic regulation of development in A. nidulans is reviewed and the conidiation pathway of N. crassa is described.

Observations, Aspergillus

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Worker reproduction in ants - a genetic analysis

Article Abstract:

Worker reproduction was not found, although expected, in three out of four ant species studied. Sex ratio biasing does occur among the three species and may be a mutually exclusive strategy for worker ants. The species Formica truncorum, F. exsecta and Myrmica ruginodis did not show evidence of worker reproduction, although worker reproduction could have occurred in F. rupa.

Genetic aspects, Ants, Insect societies

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