Titlebook: Jellyfish Blooms IV; Interactions with hu Jennifer Purcell,Hermes Mianzan,Jesscia R. Frost Book 2012 Springer Science+Business Media Dordre

expire

, medusae (Cnidaria: Hydrozoa): a semiautonomous microcosm in the food web of Lake Tanganyika,) is a prominent component of zooplankton. We used field and laboratory methods to study the ecological role of Lake Tanganyika medusae, which occasionally reached high local densities in the whole epilimnion. The largest individuals showed low amplitude, diel vertical migration which minimized thei

seruting

Detoxification

增強(qiáng)

Ecological aspects of early life stages of Cotylorhiza tuberculata (Scyphozoa: Rhizostomae) affectinean Sea. Previous laboratory experiments identified thermal control on its early life stages as the driver of medusa blooms. In the present study, new ecological aspects were tested in laboratory experiments that support the pelagic population success of this zooxanthellate jellyfish. We hypothesiz

MAIM

The potential role of podocysts in perpetuation of the common jellyfish , s.l. (Cnidaria: Scyphozoaxual reproduction of the benthic polyps, were important in perpetuating populations of . s.l. in anthropogenically perturbed waters. We examined the effects of temperature, salinity, dissolved oxygen concentrations, and food on the encystment and excystment of . podocysts. Podocysts were formed only

Alpha-Cells

野蠻

Predator-induced vertical behavior of a ctenophore,ic systems. We examined the response of the ctenophore . to the predatory ctenophore .. in an experiment in which the two species could potentially sense each other while being physically separated. On average, . responded to the predator’s presence by increasing variability in swimming speeds and b

Progesterone

slow-wave-sleep

Nudibranch predation and dietary preference for the polyps of ,, (Cnidaria: Scyphozoa), been studied; however, the importance of predators is poorly known. Aeolid nudibranchs feed on cnidarians, but their predation on the benthic polyps of scyphozoan rarely has been documented. To understand the potential of nudibranchs to consume polyps, we tested several predation preference hypothe

震驚

Parasitism (Trematoda, Digenea) in medusae from the southwestern Atlantic Ocean: medusa hosts, parars when fish prey on these jelly hosts. Fish predation on jellyfish is a widespread phenomenon, even though predation by fish on jellyfish has not been determined through parasitism yet. We hypothesized that medusae with high prevalences of digeneans could be important for their transmission to fish