| polymorphonuclear leukocyte-mediated cytolysis induced by animal lectin. | nine animal lectins, i.e., sarcophaga peregrina agglutinin, balanus roseus agglutinin, aplysia kurodai agglutinin, balanus balanoides agglutinin, tetraclita squamosa japonica agglutinin, misgurnus anguillicaudatus lectin, asterina pectinifera agglutinin, helix aspersa agglutinin and helix pomatia agglutinin, were tested for induction of cytolysis mediated by polymorphonuclear leukocytes. among them, s. peregrina agglutinin and b. roseus agglutinin lysed murine target cells in co-operation with p ... | 1983 | 6628907 |
| the importance of predation and competition in organizing the intertidal epifaunal communities of barnegat inlet, new jersey. | community organization was studied by experiment and observation from october 1972-october 1974 in the marine epifaunal assemblages at each end of barnegat inlet, new jersey. the rock jetty at the wave-exposed eastern end of the inlet possesses an intertidal community with the following attributes: (1) a high intertidal zone dominated by the barnacle, balanus balanoides, but also occupied by the blue mussel, mytilus edulis, in rock crevices, (2) a mid and low intertidal zone with usually <10% fr ... | 1979 | 28309374 |
| the antifouling activity of some juvenoids on three species of acorn barnacle, balanus. | analogues of insect juvenile hormones (juvenoids) have been tested for settling inhibition of cyprids from three species of barnacle, balanus balanoides (l.), balanus improvisus darwin and balanus amphitrite darwin. some 3-alkoxypyridine derivatives exhibited strong activity at mg litre(-1) concentrations; 3,7-dimethyloctyl 2-methyl-5-pyridyl ether (8) gave an ec(50) of 0.006 mg litre(-1) when tested on b. balanoides. when compound 8 and similar juvenoids were incorporated into paints, test pane ... | 2006 | 16705617 |
| population resistance to climate change: modelling the effects of low recruitment in open populations. | isolated populations or those at the edge of their distribution are usually more sensitive to changes in the environment, such as climate change. for the barnacle semibalanus balanoides (l.), one possible effect of climate change is that unpredictable spring weather could lead to the mismatching of larval release with spring phytoplankton bloom, hence reducing the recruitment. in this paper, model simulations of a variable open population with space limited recruitment were used to investigate t ... | 2005 | 15378344 |
| phylogeography and historical ecology of the north atlantic intertidal. | recent glaciation covered the full extent of rocky intertidal habitat along the coasts of new england and the canadian maritimes. to test whether this glaciation in fact caused wholesale extinction of obligate rocky intertidal invertebrates, and thus required a recolonization from europe, we compared american and european populations using allelic diversity and techniques adapted from coalescent theory. mitochondrial dna sequences were collected from amphi-atlantic populations of three cold-temp ... | 2001 | 11831661 |
| habitat effects on the relative importance of trait- and density-mediated indirect interactions. | classical views of trophic cascades emphasize the primacy of consumptive predator effects on prey populations to the transmission of indirect effects [density-mediated indirect interactions (dmiis)]. however, trophic cascades can also emerge without changes in the density of interacting species because of non-consumptive predator effects on prey traits such as foraging behaviour [trait-mediated indirect interactions (tmiis)]. although ecologists appreciate this point, measurements of the relativ ... | 2006 | 17040327 |
| resource identity modifies the influence of predation risk on ecosystem function. | it is well established that predators can scare as well as consume their prey. in many systems, the fear of being eaten causes trait-mediated cascades whose strength can rival or exceed that of more widely recognized density-mediated cascades transmitted by predators that consume their prey. despite this progress it is only beginning to be understood how the influence of predation risk is shaped by environmental context and whether it can exert an important influence on ecosystem-level processes ... | 2008 | 18959317 |
| landscape of fear influences the relative importance of consumptive and nonconsumptive predator effects. | predators can initiate trophic cascades by consuming and/or scaring their prey. although both forms of predator effect can increase the overall abundance of prey's resources, nonconsumptive effects may be more important to the spatial and temporal distribution of resources because predation risk often determines where and when prey choose to forage. our experiment characterized temporal and spatial variation in the strength of consumptive and nonconsumptive predator effects in a rocky intertidal ... | 2011 | 22352165 |
| moving beyond linear food chains: trait-mediated indirect interactions in a rocky intertidal food web. | in simple, linear food chains, top predators can have positive indirect effects on basal resources by causing changes in the traits (e.g. behaviour, feeding rates) of intermediate consumers. although less is known about trait-mediated indirect interactions (tmiis) in more complex food webs, it has been suggested that such complexity dampens trophic cascades. we examined tmiis between a predatory crab (carcinus maenas) and two ecologically important basal resources, fucoid algae (ascophyllum nodo ... | 2017 | 28330919 |