The adaptive significance of coprophagous behaviour in the terrestrial isopod Porcellio scaber. The woodlice in the centre of the group will have a lower humidity gradient and therefore loose water vapour at a much reduced rate when compared with an isolated woodlouse.
Reduction of surface area is another mechanism which helps reduce water loss. You could also use choice chamber experiments to find preferred conditions of humidity.
Woodlice have primitive lung-like structures in two of their pleopods. Desiccation Woodlice lack a waxy cuticle on their exoskeleton. Conversely, if the temperature is too low then the woodlice may become so sluggish that they would be unable to avoid predators.
A new iridovirus of two species of terrestrial isopods, Armadillidium vulgare and Porcellio scaber.
Alternation would result in the woodlice crossing an open or hot, or low humidity region, containing a large number of obstacles, more rapidly than if alternation did not occur. Investigating these factors could be done by using either: Fine structure of the compound eye of Porcellio scaber in light and dark adaption.
Mating systems in porcellionid isopods: Increased turn alternation by woodlice Porcellio scaber in response to predatory spider, Dysdera crocata. Accessed February 01, at http: Global Invasive Species Database.
The observation that the behaviour of woodlice is quite different if they have previously been living in very humid conditions compared to woodlice which have been living in low humidity provides some support for this hypothesis.
You might like to compare the effects of pre-exposure to humid conditions, compared with low humidity conditions, on behaviour. Development Genes and Evolution, Hints to Poultrymen, Volume 18, Number Accessed March 23, at http: Journal of Evolutionary Biology, Count the number of times the line is crossed in a 2 minute interval Stephen Sutton,Woodlice, Ginn.
To avoid desiccation in high temperatures many observers have reported that the speed of movement and also the rate of turning both increase as temperature is increased. Accessed January 30, at http: Current Topics in Microbiology and Immunology, Chemical Communication in Crustaceans.
Alternation could be investigated by using channels which force a turn and then after a variable distance allow a choice of turn. Alternation Alternation is shown when a forced turn is followed by a turn in the opposite direction at the next barrier.
Desiccation experiments could involve: You will need to find some way of controlling and measuring humidity. Growth and metal accumulation in Porcellio scaber exposed to poplar litter from Cd- Pb- and Zn-contaminated sites.
Nutrition in terrestrial isopods Isopoda: New York, New York: Clearly there must be an optimum temperature.Read about Porcellio scaber on the Animal Diversity Web. They have seven body segements, each with a pair of legs, and their bodies are divided into three sections: head, pereion (thorax), and pleon (abdomen), and their heads are divided into three lobes.
Their two pleopodia (appendages under their pleons), have pseudotrachia. Porcellio scaber - some background information. In most of the suggested investigations you will be looking at behavioural adaptations of the woodlice to changes in its habitat.
PORCELLIO SCABER SEBASTIAN KAMPE and C The test system was showntobe suitablefor investigations intothe terrestrialbioaccumulation of mint-body.comhagy hadno effect In contrast, research into the bioaccu-mulation of organic compounds in terrestrial isopods is rare [14,20–22].
Van Brummelen and van Straalen investigated. Woodlice Investigation Introduction: The ecological niche of the woodlice Porcellio scaber. The woodlouse Porcellio scaber is native to Europe but also commonly found in New Zealand.
The woodlouse Porcellio scaber is native to. THE HUMIDITY REACTIONS OF THE WOOD-LOUSE, PORCELLIO SCABER (LATREILLE) BY D. L. GUNN From the Zoology Department, University of Birmingham present investigation. This paper contains a general account of the reactions of the wood-louse, PorceUio scaber (Latreille), to humidity.
Over the last decade, the combined FIB/SEM system has proven to be also applicable in the life sciences. We have examined the potential of the focused ion beam/scanning electron microscope system for the investigation of biological tissues of the model organism Porcellio scaber (Crustacea: Isopoda).Download