Expert(s). Expert: Brian Kensley & Marilyn Schotte. Notes: National Museum of Natural History. Reference for: Armadillidium vulgare. Other Source(s). Source. Biology. Woodlice feed on dead organic matter, which they detect by means of taste and smell (2). During the breeding season, reproductive females develop a . Armadillidium sp.? – Armadillidium vulgare Pillbug caught in a spider web – Armadillidium vulgare Terrestrial crustacean – probably Porcellio scaber.

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Alternatively, handling stress could well have induced conglobation and reduced metabolic rate anyway. Armadillidium vulgare may reach a length of 18 millimetres 0.

The rate of CO 2 release was significantly vlugare during conglobation. When the young finally emerge from the pouch on the 32nd day, their exoskeletons have hardened significantly from minerals provided by the mother Lawlor Evaporation from the pleopods is one of the most important physiological factors affecting the survival and distribution of isopods Edney, ; Cloudsley-Thompson Two- to three-month-old A.

Aemadillidium conditions usually lead to earlier reproduction. Aerobic capacity and the significance of pleopodal lungs.

In other projects Wikimedia Commons Wikispecies. Individuals infected with IIV may instead be light blue, purple, or violet. They were no longer fed, but otherwise maintained in the same manner as the source population. This has caused the pheromone to be hypothesized to serve as a potential mate-finding tool, or as an aid in synchronization of female molting cycles. Finally, there are 2 to 4 days of ecdysis. Acclimation, water and temperature relations of woodlice Metaponorthus pruinosus vukgare Periscyphis jannonei in Sudan.


Retrieved August 30, In other words, India and southeast Asia. In addition to protection from predation, conglobation also protects the more delicate ventral surface, allowing pill bugs to survive conditions that may be lethal to other species White and Zar Our flow-through respirometry data support the hypothesis that conglobation behavior of A. Then a 10 to 12 day premolt, where the new molt cycle begins.


Geographic Range Armadillidium vulgarethe common pillbug, is native to the edge of the Mediterranean and has been introduced to nearly all worldwide terrestrial landmasses, with particularly dense populations in temperate climates. Managing pests in gardens: Conglobation was achieved by wrapping specimens in soft 8 mm orthodontic rubber bands GAC International, Canada that were knotted centrally to reduce their diameter Figure 1.

Although the specimens of A. Both microhabitat selection and local adaptation Castaneda et al. The temperature of woodlice in the sun. During conglobation, the volume of A. We used the same individuals for respirometry under conglobated and free conditions, with the order of measurement randomized among isopods.

The pillbug is often mistakenly referred to as a sowbug, which is the common name used for other species of woodlice in the genera Oniscus and Porcellio. While the mancas remain in the marsupium, the mother remains in or close to her natal burrow.

Armadillidium vulgare (Latreille, ) | BMIG

The genus was once Armadillonamed after the similarly conglobating well-known armored mammal species. Excretion and water balance in some land isopods. If they fail to locate a more desirable habitat after a yet-undetermined time threshold, they will return to their natal habitat, presumably to decrease the survival risks involved with lengthy, long-distance movements.

A sowbug, another non-insect arthropod that is often mistaken for the pillbug, Armadillidium vulgare Latreille. Evidence in this regard comes from Edneywho found that both A.

This cycle is called the preparturial intermolt, with the actual process of ecdysis at the end of the cycle called the parturial molt. Some pillbug species, Armadillidium vulgare among them, act as an intermediate host in the life cycle of an acanthocephalan worm armadillidium, Plagiorhynchus cylindraceus. To correct for this, both groups of isopods were treated to the same handling conditions.


Isopods have a cephalic shield incompletely fused carapace that is less durable than the fully fused carapace of other crustaceans.

Two respiratory measurements were performed, with a 48 hr interval between them. Among adults, they are often seen as unwanted but essentially harmless home pests. Metabolic Rates The rate of CO 2 release was significantly reduced during conglobation.

The data from the trials at known humidity suggest that conglobation also decreases water loss at sub-saturating humidity. An isopod armadilkidium to forced conglobation by a dental rubber band.

Given these considerations, the measurements of CO 2 release should provide an accurate estimate of metabolic rates. Wright JC, Machin J. Some data suggest that almost ten percent of the pill-bug’s diet comes from self-coprophagy, which recirculates microbes and nutrients that were not fully processed during original digestion.


Open in a separate window. Click the contributor’s name for licensing and usage information. Defecation was noted on only three occasions, and metabolic mass losses have been shown to be negligible Wright and Machin aso the differences in mass were used to estimate non-excretory whole-body water loss.

Group influence on water conservation in the giant Madagascar hissing cockroach, Gromphadorhina Dictyoptera: Accessed November 28, at http: