US-guided SI joint injection was feasible in all children, relatively quick and easy to perform and appeared effective in the treatment of children with sacroiliitis.
Interactions between different initial densities of the predator Allaeocrcmum biannulipes and its preys were investigated. Four initial densities (3, 6, 9 and 12 pairs/vial) and three preys, Corcyra cephalonica, Tribolium confusum and Anagasta kuehniella were checked at 15–26 °C and 45–60% r. H. Associating with the latter prey, the pest's population showed a negative response towards the increase of the initial density of the predator up to 9 pairs/vial. However, in association with the other two preys, a reverse trend took place.
The appropriate initial density with which the predator could face its victim was checked against the prey A. kuehniella under two hygrotherimic conditions: 15–26 °C/45–60% r. H. and 22–23 °C/38–60% r. H. At the former conditions, the predator was most efficient as it was able, with the density of 6 pairs/vial, to build up its population and to suppress that of its prey. However, in summer months (22–23 °C/38–60% r. H.), conditions were in favour to the pest than to the predator and consequently, the highest density of the latter built with the intial density of 9 pairs/vial was associated with a relatively high density of the prey.
Zusammenfassung
Zur Wirkung der Raubwanze Allaeocranum biannulipes (Montr. et Sign.) auf die Populationen einiger vorratsschädlicher Insekten
Es wurden die Beziehungen zwischen verschiedener Anfangsdichte der Raubwanze A. biannulipes und der Enddichte ihrer Beutetiere Corcyra cephalonica, Tribolium confusum und Anagasta kuehniella bei 15–26°C und 45–60% rel. LF untersucht. Letzterer Schädling reagierte auf eine Zunahme der Anfangsdichte der Raubwanze bis hinauf zu 9 Paar/Gefäß mit einer Verminderung der Dichte. Jedoch war bei den beiden anderen Schädlingsarten ein umgekehrter Trend zu beobachten. Die optimale Anfangsdichte der Raubwanze wurde bei 2 Temperatur‐Luftfeuchte‐Bedingungen (15–26°/45–60% und 22–23°/38–60%) ermittelt. Bei der erstgenannten Bedingung war der Prädator am wirksamsten: er baute seine Population von 6 Paar/Gefäß ausgehend auf und reduzierte die Dichte seiner Beute. Dagegen wirkten die Sommerbedingungen (22–23°/38–60% zugunsten des Schädlings: eine Anfangsdichte von 9 Paar/Gefäß hatte eine relativ hohe Beutedichte zur Folge.
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