Report of Sphenochernes camponoti (Beier, 1970) (Pseudoscorpiones, Chernetidae) in phoresy on Fanniidae (Diptera) / Relato de Sphenochernes camponoti (Beier, 1970) (Pseudoscorpiones, Chernetidae) em forésia em Fanniidae (Diptera)

Phoresy is a common dispersal behavior among pseudoscorpions. Neotropical pseudoscorpions, mainly from the North and Northeast regions of Brazil, are known for their dispersal relationships with beetles and flies. Here, we report phoretic association among nymphs of Sphenochernes camponoti (Chernetidae) and Fannia flies (F. pusio, F. yenhedi, and F. canicularis) (Diptera, Fanniidae). Twelve flies, each carrying a young pseudoscorpion, were collected in Caatinga vegetation in Pernambuco State, Brazil. Sphenochernes camponoti is a myrmecophilous pseudoscorpion that lives in Camponotus and Acromyrmex colonies. Despite its association with ants, this pseudoscorpion uses other winged arthropods to disperse. This is the first report of phoresy by Sphenochernes camponoti.

A forésia é um comportamento de dispersão comum entre os pseudoescorpiões. Os pseudoescorpiões neotropicais, principalmente das regiões Norte e Nordeste do Brasil, são conhecidos por sua relação de dispersão com besouros e moscas. Neste estudo, relata-se a associação forética entre as ninfas de Sphenochernes camponoti (Chernetidae) e Fannia (F. pusio, F. yenhedi e F. canicularis) (Diptera, Fanniidae). Foram coletadas doze moscas em vegetação de caatinga, no Estado de Pernambuco, Brasil, cada uma delas transportando um pseudoescorpião jovem. Sphenochernes camponoti é um pseudoescorpião mirmecólifo, encontrado anteriormente em colônias de formigas Camponotus e Acromyrmex. Embora se associem com formigas, esses pseudoescorpiões utilizam outros artrópodes alados para se dispersarem. Este é o primeiro relato de forésia de Sphenochernes camponoti.

Advance in Biofilm Dispersal Strategies / 微生物学通报

Bacterial biofilm is responsible for a wide variety of nosocomial infections.Many chronic infectious diseases are closely correlated with biofilm formation in the clinic.As the biofilm growth,bacterial clusters detachment and dispersal from mature mixed-species biofilms will result in repeated acute infections.Here reviews three distinct biofilm dispersal strategies: swarming dispersal,clumping dispersal and surface dispersal.Many factors,such as heredity and increased fluid shear in the environment,contribute to this complex and dynamic process.Fundamental investigation upon biofilm will benefit clinical therapy of biofilm-associated infections.