Egg-brooding, body size and predation risk in planktonic marine copepods
نویسندگان
چکیده
منابع مشابه
Evolution of bioluminescence in marine planktonic copepods.
Copepods are the dominant taxa in zooplankton communities of the ocean worldwide. Although bioluminescence of certain copepods has been known for more than a 100 years, there is very limited information about the structure and evolutionary history of copepod luciferase genes. Here, we report the cDNA sequences of 11 copepod luciferases isolated from the superfamily Augaptiloidea in the order Ca...
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Using life history theory we make predictions of mortality rates in marine epi-pelagic copepods from field estimates of adult fecundity, development times and adult sex ratios. Predicted mortality increases with temperature in both broadcast and sac spawning copepods, and declines with body weight in broadcast spawners, while mortality in sac spawners is invariant with body size. Although the m...
متن کاملGrowth of marine planktonic copepods: Global rates and patterns in relation to chlorophyll a, temperature, and body weight
We compiled a global data set of copepod in situ weight-specific fecundity and growth rates, together with measurements of their body weights, and the chlorophyll a and temperature of the natural water in which these animals were growing. Juveniles can achieve half-saturation of their growth (Km) at chlorophyll a concentrations almost an order of magnitude lower than adult females can their wei...
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We investigated the vulnerability of 2 copepod species (Eurytemora affinis and Temora longicornis) to predation by predators with different foraging modes, three-spined stickleback Gasterosteus aculeatus juveniles and mysid shrimps Neomysis integer. Copepods were videofilmed escaping from predators and from an artificial flow field, and the results were used in a model of hydrodynamic disturban...
متن کاملSize-specific predation on marine invertebrate larvae.
Predation on planktonic larval stages is frequently a major source of mortality for the offspring of benthic marine invertebrates. Mortality rate likely varies with larval size and developmental stage, but few experiments have measured how these factors affect predation rates. I used experimental reductions in egg size to test how variation in larval size affects the likelihood of predation dur...
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ژورنال
عنوان ژورنال: Oecologia
سال: 1999
ISSN: 0029-8549,1432-1939
DOI: 10.1007/s004420050948