Salinity tolerance and osmoregulation in the nemertean Pseudocarcinonemertes homari, an egg predator of American lobster, Homarus americanus.
Finding refuge: the estuarine distribution of the nemertean egg predator Carcinonemertes errans on the Dungeness crab, Cancer magister.
The number of egg predators
in the vicinity of the nest, together with the density of fishes competing for the nest site appear to elevate levels of the stress-associated hormone, cortisol, in the females.
In our study, potential egg predators
included large-mouthed species such as corvids, squirrels, marten, and bear, but also small-mouthed predators such as shrews.
Males guard nest-territories against conspecifics year round, and chase potential egg predators when defending embryos.
albisella selectively attacks active egg predators, we divided the species into two groups.
Cultivation practices differentially disrupt egg predators
(Table 1b, [ILLUSTRATION FOR FIGURE 3A OMITTED]), and insects in agricultural situations may suffer marginally higher overall mortality in late developmental stages (Table 1b, [ILLUSTRATION FOR FIGURE 3D, E OMITTED]), but natural enemies generally appear little affected in cultivated habitats relative to natural ones.
A spawning sound provides a simple mechanism for synchronizing gamete release and thereby maximizing fertilization, but it may also attract egg predators