Parasitic worms (ie, helminths) commonly infect multiple hosts in succession. With every
transmission step, they risk not infecting the next host and thus dying before reproducing …

Studies on host-parasite systems as bioindicators for monitoring trace metal pollution in
marine environments are still scarce. Here, 11, 14 and 17 infrapopulations of Gyliauchen …

There is evidence of competition within and between helminth species, but the mechanisms
involved are not well described. In interference competition, organisms prevent each other …

Parasitic worms with complex life cycles have several developmental stages, with each
stage creating opportunities to infect additional host species. Using a data set for 973 …

Organisms with complex life cycles occupy distinct niches as larvae and adults. One
presumed advantage of this is the ability to exploit different resources successively …

Background Density related effects, both inverse density-and density-dependent, contribute
to regulating population dynamics of parasites. We investigated whether density related …

La historia de vida y estrategias de reproducción de los parásitos muestran una variabilidad
signifi cativa asociada con la identidad de hospedador y con factores ambientales. Este …

In hermaphroditic helminth parasites, infrapopulation size or mating group size mostly
affects some processes acting within the infrapopulation. Here, 30 natural infrapopulations …

The fecundity, the relationship between fecundity and worm size, as well as abundance of
the adult worm Proctoeces cf. lintoni (Digenea: Fellodistomidae) in four gastropod hosts …

In infrapopulations of helminth parasites, density-dependent effects, through some form of
intra-and interspecific competition, play an important role in shaping and regulating the …