Diel Vertical Migration of Zooplankton in Lakes and Oceans
causal explanations and adaptive significances
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Article
Sikko Parma: limnologist, environmentalist and scientific manager
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Chapter and Conference Paper
The influence of a fish exudate on two clones of the hybrid Daphnia galeata × hyalina
Two Daphnia clones were isolated from different day depths during the period of diel vertical migration and were tested for their life-history responses to a fish exudate released by juvenile perch. Animals were ...
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Article
The influence of a fish exudate on two clones of the hybrid Daphnia galeata × hyalina
Two Daphnia clones were isolated from different day depths during the period of diel vertical migration and were tested for their life-history responses to a fish exudate released by juvenile perch. Animals were ...
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Chapter and Conference Paper
Differential behaviour and shifts in genotype composition during the beginning of a seasonal period of diel vertical migration
During the first few weeks of a recurring seasonal period of diel vertical migration in Lake Maarsseveen (The Netherlands), part of the hybrid Daphnia galeata × hyalina population migrated, while another part rem...
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Chapter and Conference Paper
Some suggestions for future cladoceran research
The topics dealt with at the Cladoceran Symposium showed a large diversity. A high diversity is what characterises the world we study, consisting of many different habitats and a rich species set. This easily ...
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Article
Some suggestions for future cladoceran research
The topics dealt with at the Cladoceran Symposium showed a largediversity. A high diversity is what characterises the world westudy, consisting of many different habitats and a rich speciesset. This easily lea...
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Article
Differential behaviour and shifts in genotype composition during the beginning of a seasonal period of diel vertical migration
During the first few weeks of a recurring seasonalperiod of diel vertical migration in Lake Maarsseveen(The Netherlands), part of the hybrid Daphniagaleata × hyalina population migrated, whileanother part rema...
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Article
Differential life history responses of several pelagic Daphnia clones differing in migratory behaviour
Females of the hybrid Daphnia galeata × hyalina were isolated from a natural population in Lake Maarsseveen and from these individuals clones were cultured in the laboratory. Some clones were assumed to be mig...
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Article
Quantitative effects of fish kairomones and successive light stimuli on downward swimming responses of Daphnia
Swimming in response to light change is considered the proximate mechanism underlying diel vertical migration. This behavioural mechanism is supposed to be tuned to the adaptive needs under natural conditions ...
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Article
What goes down must come up: symmetry in light-induced migration behaviour of Daphnia
During a short period of the year, Daphnia may perform a phenotypically induced diel vertical migration. For this to happen, light-induced swimming reactions must be enhanced both at dawn and at dusk. Enhanced sw...
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Article
On the combined analysis of proximate and ultimate aspects in diel vertical migration (DVM) research
Although evolutionary ecologists agree that proximate and ultimate aspects are two sides of one coin, they are seldom interested in studies on physiological and behavioural mechanisms at the base of ecological...
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Article
Density and depth variations of Daphnia multilocus genotypes during a summer period in Lake Maarsseveen
The genotype composition of a Daphnia population complex during a summer period in Lake Maarsseveen (The Netherlands) was determined by allozyme analysis. The depth distribution, diel vertical migration and sever...
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Article
Density and depth variations of Daphnia multilocus genotypes during a summer period in Lake Maarsseveen
The genotype composition of a Daphnia population complex during a summer period in Lake Maarsseveen (The Netherlands) was determined by allozyme analysis. The depth distribution, diel vertical migration and sever...
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Book
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Chapter
Considerations Before Going into the Field
If the depth of a zooplankton population in daytime differs significantly from the depth at night, the population is said to migrate. It has become customary to speak of diel vertical migration, thus of a phenome...
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Chapter
Windows: An Introduction
We study animals from an anthropomorphic perspective. The sense organs of animals differ from ours and, of course, also their central nervous system. A bee, with a spectral sensitivity extended in the ultravio...
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Chapter
Migrations in the Marine Environment
The oceans cover 71% of the Earth’s surface and contain a tremendous volume of approximately 1.3 × 109 km3. Although biodiversity of the littoral communities may be as high as in terrestrial ecosystems, the pelag...
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Chapter
From the Individual to the Population and Beyond
Zooplankton are important links in of oceans and lakes. This holds for herbivores like most cladocerans, or omnivores like cyclopoid and calanoid copepods, but also for predators as many species of Euphausia ar...
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Chapter
Light-Induced, Reactive Swimming
Nowadays, ecologists are not very interested in the physiological–behavioural mechanisms that underlie ecological phenomena. Attention is focused on ultimate, evolutionary aspects. This also holds for investig...
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Chapter
Mechanistic Models
“What makes models so fashionable?” is the first sentence of an excellent essay by Gabriel (1993) on the use of models in studying DVM. As is usual with fashionable things, it is difficult to give a single ans...
