WebIt has been proposed that in water bodies without predation, the composition of Daphnia species is influenced by size-dependent competition, with larger species out-competing smaller species. There is, … WebFurther, we observed that these Daphnia taxa produced a higher RTL only under high food conditions. This suggests that there is a cost related to the production of longer tail …

Tail spine length in the Daphnia galeata complex: costs

WebJan 22, 2001 · In Daphnia, the role of maternal effect in the expression of phenotypic reactions to environmental factors by offspring has been extensively discussed … Webimmediate predation risks (Tollrian & Dodson, 1999). A large body of research has shown that several species of the genus Daphnia produce elaborate morphological structures including spines, neckteeth, and helmets in response to kairomones released by invertebrate predators (e.g. Krueger & Dodson, 1981; Tollrian, 1995). Because … great scents air freshener memphis tn

Maternal experience can enhance production of resting …

WebMorphological responses to the presence of predator info-chemicals havebeen described for many Daphnia (Cladocera) species, but D. galeata is generally considered to exhibit … WebMaternal effects enhancing offspring survival and antipredator behavior will primarily increase the direct fitness of parents, but in this species, selection of maternal effects might be further strengthened via positive feedback on maternal fitness because all surviving off- spring stay at the natal territory as alloparental brood care helpers … Organisms have evolved the capacity to respond to changes in the environment by phenotypic adaptation. Fluctuations in the biotic environment are dominated by the ever-changing presence and absence of con- and heterospecific organisms, prey, and predators. Therefore, detecting mates, prey or predators, and … See more Genotypes equipped with adaptive strategies to increase individuals' fitness can help organisms to conquer environments with fluctuating conditions. From an ecological … See more Predation is a major factor driving adaptation and predator-induced defenses are an intriguing form of phenotypic plasticity that can decrease the likelihood of predator encounter or detection, and reduce the … See more Sensory information often plays a pivotal role in shaping species interactions (Hay, 2009). Species acquire information about their biotic and abiotic environment by detecting specific chemical cues (Atema et al., 1988). … See more Inducible defenses in Daphnia are manifold. Some Daphnia species show behavioral adaptions to fish predation (Figure 1). They perform fish-induced diel vertical migration, seeking refuge in the deeper water strata … See more great scenic railway journey