Ultrastructural Evidence for Bacterial Incorporation and Myxotrophy in the Photosynthetic Cryptomonad Chroomonas Pochmanni Huber-Pestalozzi (Chyptomonadida)

Ultrastructural evidence indicates that bacteria are routinely incorporated into the Cells Chroomonas Pochmanni. This strain has a specialized vacuole for capturing bacteria and retaining them in this vacuole. Bacteria appear to be drawn into the vacuole through a small opening which becomes occluded by membranes, completely enclosing the Bacteria. On rare occasions, ohter membrane components and intact ejectisomes also become incorporated into this vacuole. Bacteria-like remnants in small vesicles, in other locations in the cell, suggest that bacteria are digested in these vesicles.     

A simple procedure for joint estimation of the long‐term rates of sexuality and mutation in predominantly clonal populations,for use with dominant molecular markers

In highly clonal populations, mutation can contribute to the rate of apparent sexuality. To remove this bias, a method is presented that jointly estimates the rates of sexuality (Ns) and mutation (Nµ) for populations, based upon levels of single‐locus vs. multilocus clonal identity. This effectively haploid model assumes equilibrium, and can be used with dominant molecular data and in conjunction with organisms of various ploidies. Simulations indicate that while equilibrium can take thousands of generations to attain, and afterwards have a large evolutionary variance, the method gives approximate estimates of Ns.     

Larval descriptions of five Byctiscus species (Coleoptera: Rhynchitidae) in Korea

The genus Byctiscus reported in Korea in five of nine species (B. lacunipennis, B. rugosus, B. puberulus puberulus, B. princeps and B. coerulans) is described for the last instar larvae. In addition, the cradle structure and host‐plants are provided.