Mollusc Model System
Mollusc Model System - Related Videos
15:19
Effect of Male Accessory Gland Products on Egg Laying in Gastropod Molluscs
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Cited by 35 •
2014
This video protocol demonstrates a method to study effects of seminal fluid in gastropods, using the hermaphroditic freshwater snail Lymnaea stagnalis.
09:51
Monitoring Changes in the Intracellular Calcium Concentration and Synaptic Efficacy in the Mollusc Aplysia
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Cited by 4 •
2012
We demonstrate how changes in the intracellular free calcium concentration and synaptic efficacy can be simultaneously monitored in a ganglion preparation of Aplysia. We image intracellular calcium using a fluorescent dye, Calcium Orange, and induce and monitor synaptic transmission with sharp (intracellular) electrodes.
07:33
A Whole Mount In Situ Hybridization Method for the Gastropod Mollusc Lymnaea stagnalis
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Cited by 17 •
2016
The goal of this protocol is to provide users with a set of methods for the high-throughput decapsulation of Lymnaea stagnalis embryos and larvae in preparation for whole mount in situ hybridization, and for subsequent pre- and post-hybridization treatments.
07:59
A Strain Gauge Monitor (SGM) for Continuous Valve Gape Measurements in Bivalve Molluscs in Response to Laboratory Induced Diel-cycling Hypoxia and pH
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Cited by 4 •
2018
Understanding the behavioral responses of bivalve suspension-feeders to environmental variables, such as dissolved oxygen, can explain some ecosystem processes. We have developed an inexpensive, laboratory-based, strain gauge monitor (SGM) to measure valve gape responses of oysters, Crassostrea virginica, to diel-cycling hypoxia and cyclical pH.
12:31
In Vivo Modeling of the Morbid Human Genome using Danio rerio
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Cited by 66 •
2013
Here, we present a systematic approach for developing physiologically relevant, sensitive and specific in vivo assays for interpreting variation in human pathology. Transient genetic manipulation via microinjection of WT and mutant human mRNA and morpholino (MO) antisense oligonucleotides harness the tractability of the developing zebrafish embryo to rapidly assay pathogenic mutations, especially, but not exclusively, in the context of human developmental disorders.
FAQs
Species choice determines which biological feature can be examined most directly. Embryos support developmental observations, nervous systems enable neurobiological investigation, shells provide access to biomineralization, and immune responses or behaviors offer organism-level readouts. Matching the organism to the question helps researchers connect an experimentally accessible trait with the process they want to understand.
Each method contributes a different scale of observation. Microscopy records visible cellular or organismal features, while genetics, electrophysiology, and behavioral assays provide additional ways to examine biological processes. When these data are combined, researchers can relate changes observed at the cellular level to nervous-system activity, behavior, development, or another outcome at the organism level.
Comparing molluscs can separate broadly conserved biological principles from features tied to particular adaptations. A snail, bivalve, or cephalopod may make different traits experimentally accessible, so findings across these organisms can show whether a mechanism is shared or associated with a specialized adaptation. This comparative value strengthens biology research beyond results from one laboratory animal.
Researchers first select a species and biological feature suited to the question, then maintain the organism under culture conditions that permit observation or manipulation. They apply an appropriate combination of microscopy, genetics, electrophysiology, or behavioral assays and relate the resulting observations to the biological process under study. This workflow links experimental conditions to cellular and organism-level outcomes.
These systems support developmental biology, neurobiology, evolution, biomineralization, environmental toxicology, and host defense research. Their value depends on the feature being studied: embryos can support developmental work, nervous systems can support neurobiology, and shells can support biomineralization. Immune responses and behaviors provide additional biological readouts, while the broader group supports several distinct research goals.
By linking cellular mechanisms with organism-level outcomes, mollusc studies help biology connect processes across levels of organization. Embryos, nervous systems, shells, immune responses, and behaviors offer distinct entry points for investigating development, neural function, biomineralization, defense, and behavior. Because the group is diverse, experiments can reveal conserved principles while highlighting adaptations that standard laboratory animals may not capture.