Centris pallida is a species of solitary bee native to North America. It lacks an accepted common name; however, it has been called the digger bee, the desert bee, and the pallid bee due to its actions, habitat, and color respectively. The solitary nature of this bee allows for a dual-strategy mating system which produces an evolutionarily stable state resistant to invading strategies. These bees have also evolved to withstand the high temperatures of their native habitat. C. pallida routinely has internal temperatures within 3 degrees Celsius of death.
The other category of behavior (the hoverers) uses a very different strategy that relies on the inherent limitations of the patroller strategy. Females won't have copulated with a patroller if they weren't found before emerging, or if they departed while the male that found them was fighting off a rival. The hoverers will wait either near plants that are close to emergence areas, regardless of whether the plants are flowering, or at flowering trees and shrubs well away from the emergence areas. These bees will hover anywhere from a few centimeters to eight meters in the air. Since patrollers are generally looking at the ground to find emergence areas, hoverers have less competition over escaped females. Those that are close to the emergence areas are able to quickly spot any females that got away from the patrollers. Male bees that are away from emergence areas stake out flowering plants in the hope that virgin females will arrive seeking food. Also, low-emergence areas are less likely to be patrolled, and thus, more females emerge without copulating.[9]
The egg will then hatch within two weeks, and the grub will eat the nourishment that the mother left. The amount of bee bread provided will directly affect the size of the offspring (more food = larger size). When the food has been eaten and the grub has fully developed, the grub will turn into a prepupa. Over the course of eleven months, the prepupa will undergo metamorphosis to become an adult bee. The adult bee will then dig to the surface in late April or early May, and will live for about a month. By late July, virtually no C. pallida can be found.[7]
Collaboration is of the utmost importance at Centris. It takes shape with our team, with our real estate clients, and with our valued partners from Québec and elsewhere, with whom we design approximately 50% of our tools. We encourage the pooling of talent to develop innovative solutions for real estate professionals and adapt tools based on a particular geographical context. At Centris, we see big and we see far: partnerships are essential to our progress.
Centris pallida serve numerous roles for the environment. Like most other bees, they are essential for pollination. Specifically, they pollinate cacti, desert willow, and palo verde.[14] The tunneling ability of these bees aerates the soil, and this allows water from rain to reach plant roots quickly. Their nitrogen rich feces fertilizes the soil.[15] Their stings are mild, so they are not dangerous. The only downside with respect to humans is that their burrowing can leave unsightly mounds. If an area has a large density of burrowing females, then these mounds can be quite noticeable and are difficult to get rid of.[14]
Dans cette nouvelle phase de développement à Stoneham, F. Audet Construction vous offre de beaux jumelés au look Stoneham grâce à notre touche de bois Timber Frame. Nos jumelés neufs au design repensé et bâtis selon des normes de construction très élevées sont parfaits pour votre style de vie actif. Nouveau plan d’aménagement, aires de vie lumineuses, fenestration abondante, terrain boisé pouvant aller jusqu’à 12 000 pieds carrés et vue imprenable sur les montagnes… quoi de mieux pour s’établir en beauté!

Outre les effets conjoncturels, les caractéristiques propres d'un bien immobilier ont une influence sur son prix. Celles-ci peuvent être intrinsèques au bien (facilité d'accès et d'aménagement, confort, isolation, exposition, esthétique, vétusté, charges et contraintes, bien occupé ou librement habitable), des éléments sentimentaux (biens de famille). Des phénomènes de rareté peuvent éventuellement être créés par des contraintes administratives de construction8.

They are large (up to 3 cm), fast-flying bees, distinguished from the closely related genus Epicharis by the absence of long, whip-like setae that project backwards from just behind the eyes. They are commonly encountered bees in American deserts, and are active at very high ambient temperatures when many other species are in hiding. They can often be seen in large numbers on desert-willow (Chilopsis) and palo verde (Parkinsonia) blossoms. Bees of this genus are of some economical significance in pollinating crops such as Brazil Nut (Bertholletia excelsa) and Cashew (Anacardium occidentale, pollinated by C. tarsata among others).
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