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.
|Country:||Saint Kitts and Nevis|
|Published (Last):||1 April 2011|
|PDF File Size:||11.22 Mb|
|ePub File Size:||12.77 Mb|
|Price:||Free* [*Free Regsitration Required]|
Edney also measured water loss from A.
Water loss of A. They are located on the first two ventral segments of the pleon, and are hypothesized to have once been a pair of appendages. Transition from water to land in isopod crustaceans. Flow-through respirometry Before experimentation, individuals were selected at random from the population and placed in individual wells of a microplate containing moist soil.
Individual variation in the seasonal reproduction of the terrestrial isopod Armadillidium vulgare Latr. The aggregate pheromone has many specific functions, including desiccation prevention, body growth rate acceleration, and metabolic rate reduction, but it may be used primarily as a way of locating conspecifics.
Water loss via the respiratory surface is one of the most important physiological factors affecting the survival and distribution of terrestrial isopods Edney ; Cloudsley-Thompsonas cited in Nair et al. However, males are more attracted to females with prominent calcium plates, which correspond to their higher reproductive receptivity period. Exposed large-particle soil as found in agricultural cultivation sites or greenhouses is more desirable than finer soils, as the former allows for increased water retention, easier burrowing, and increased relative humidity.
On the other hand, Edney noted that the distribution of the more common isopods in the United Kingdom was by no means always related to moisture. The pillbugs continue to molt every one to two weeks for the next 18 weeks. After mating, female individuals exhibit a ‘refractory period’ during which further male mating attempts are rejected. Armadillidium vulgare is abundant and active as both a soil and surface dweller.
Breeding season The breeding season usually lasts from late spring to early armxdillidium. Received Jun 20; Accepted Aug While ADW staff and contributors provide references to books and websites that we believe are reputable, we cannot necessarily endorse the contents of references beyond our control. Eggs are retained in the marsupium for two to three months until the mancas hatch.
Journal of Experimental Biology.
This armadillldium in contrast to Edney’s observation that A. Roberts for their comments, as well as Jeffery Knight, who identified our specimens. Large populations in gardens or greenhouses may cause noticeable damage to young plant shoots, but this threat is minimal.
Like all isopods, Armadillidium vulgare is oval-shaped and moderately flattened along its dorsal plane.
Like most other crustaceans, isopods have flattened plate-like uropods flattened appendages used for movement and a telson rigid structure used for backwards thrust which are fused to form a posterior tail fan. Isopoda Pillbugs, Slaters, and Woodlice. Respiratory physiology of the Oniscidea: It is the most extensively investigated terrestrial isopod species.
This defensive behavior also makes it look like a pill, which is why it is sometimes known as a pillbug. These would tend to reduce water-loss rates because of the reduced gradient for water loss at the surface of the vulgqre. Water-loss measurements from these individuals did not exhibit a similar pattern, nor were respirometry measurements for these individuals performed on the same day, so the cause of this difference is unclear. Vegetation is made up mostly of grasses, the height and species diversity of which armadilliduum largely on the amount of moisture available.
Armadillidium vulgare – Wikipedia
Cuticular damage in our experiments is also a concern, but the consistent decrease in water-loss rates in all 29 individuals suggests that enforced conglobation did not cause substantial damage.
ADW doesn’t cover all species in the world, nor does it include all the latest scientific information about organisms we describe.
Plagiorhynchus cylindraceus infestations also render female isopods sterile, and directly alter the behavior of its host. The Tarantula Keeper’s Guide: