Microbiomes of Hadal Fishes across Trench Habitats Contain Similar Taxa and Known Piezophiles.

Hadal snailfishes are the deepest-living fishes in the ocean, inhabiting trenches from depths of ∼6,000 to 8,000 m. While the microbial communities in trench environments have begun to be characterized, the microbes associated with hadal megafauna remain relatively unknown. Here, we describe the gut microbiomes of two hadal snailfishes, (Mariana Trench) and (Kermadec Trench), using 16S rRNA gene amplicon sequencing.

A Filamentous Bacteriophage Protein Inhibits Type IV Pili To Prevent Superinfection of Pseudomonas aeruginosa.

Pseudomonas aeruginosa is an opportunistic pathogen that causes infections in a variety of settings. Many P. aeruginosa isolates are infected by filamentous Pf bacteriophage integrated into the bacterial chromosome as a prophage.

Male Age and Dynamics: Investigating How Fast and Why Bacterial Densities and Cytoplasmic Incompatibility Strengths Vary.

Endosymbionts can influence host reproduction and fitness to favor their maternal transmission. For example, endosymbiotic bacteria often cause cytoplasmic incompatibility (CI) that kills uninfected embryos fertilized by -modified sperm. Infected females can rescue CI, providing them a relative fitness advantage.