Homology of segmentation and phylogeny Before considering the evolution of segmentation, we first need to specify what we mean by a ‘segment’. True segmentation, or metamerism, is usually considered to be the repetition along the anterior–posterior axis of a structural unit that comprises a suite of characters involving the entire body1. Animals and plants, which evolved multicellularity indepe...

Objective(s): To present a brief overview of various natural sources of antimicrobials with the aim of highlighting invertebrates living in polluted environments as additional sources of antimicrobials. Materials and Methods: A PubMed search using antibacterials, antimicrobials, invertebrates, and natural products as keywords was carried out. In addition, we consulted conference proceedings, or...

The distribution of non-ant arthropods was examined in 40 urban habitat fragments in coastal San Diego County, California, USA, to look for effects of fragmentation, proximity to developed edge, and the non-native Argentine ant (Linepithema humile). Arthropods were sampled with pitfall traps and by vacuum sampling from California buckwheat shrubs (Eriogonum fasciculatum). Individual arthropods ...

Over a 10-year period we investigated redcockaded woodpecker (Picoides borealis) prey use, sources of prey, prey distribution within trees and stands, and how forest management decisions affect prey abundance in South Carolina, Alabama, Georgia, and Florida. Cameras were operated at 31 nest cavities to record nest visits with prey in 4 locations that ranged in foraging habitat from pine stands ...

The genus Annona is confined almost entirely to tropical and subtropical America and the Caribbean region (Safford 1914). Edible species include Annona muricata L. (soursop), A. squamosa L. (sugar apple), A. cherimola Mill. (cherimoya), and A. reticulata L. (custard apple). Each geographical region has its own distinctive pest fauna, composed of indigenous and introduced species (Bennett & Alam...