MEDETERA ALDRICHII (DIPTERA: DOLICHOPODIDAE) IN THE BLACK HILLS: I. EMERGENCE AND BEHAVIOR OF ADULTS

1970 ◽  
Vol 102 (6) ◽  
pp. 705-713 ◽  
Author(s):  
J. M. Schmid
Keyword(s):  
Emerging Adults ◽  
Dendroctonus Ponderosae ◽  
Black Hills ◽  
Modal Number ◽  
Emergence Period ◽  
Resin Ducts ◽  
And Behavior

AbstractThe number of Medetera aldrichii Wheeler adults emerging daily in 1966 and 1967 was low and irregular. Peak numbers apparently emerged 20–30 days prior to mass emergence of Dendroctonus ponderosae Hopkins although the numbers fluctuated through the mass emergence period of the beetle. Densities of emerging adults averaged less than 1 per square foot of bark and never exceeded 6.0 per square foot. Densities of the emerging flies and beetles did not appear related.Adults mated on the bark surface of trees infested with D. ponderosae; mating habits are described.Females oviposited in degenerate resin ducts in the bark surface. Two eggs per duct were the modal number. Seven or more per duct were found in less than 5% of the ducts examined.

Catching feelings: Exploring commitment (un)readiness in emerging adulthood

2019 ◽  
Vol 37 (1) ◽  
pp. 143-162 ◽  
Author(s):  
Leah E. LeFebvre ◽  
Heather J. Carmack
Keyword(s):  
Emerging Adults ◽  
Stages Of Change ◽  
Exploratory Study ◽  
Behavior Changes ◽  
Change Model ◽  
Focus Group Interviews ◽  
Face To Face ◽  
Decision Making Processes ◽  
Group Interviews ◽  
And Behavior

This exploratory study investigates how emerging adults (EAs) experience catching feelings. Applying the Stages of Change Model and Relational Receptivity Theory, this study investigates how EAs understand the cognitive and behavior changes leading up to commitment and how they process precontemplation surrounding catching feelings. Using focus group interviews, collegiate EAs ( N = 17) define catching feelings as the unintentional, unexpected, and surprisingly desirable development of romantic feelings for another person (commonly beginning face-to-face). When confronted with catching feelings, EAs must delineate their preconditions for catching feelings and work through decision-making processes. Implications for relationship readiness, communication, and commitment are discussed.

Radar observation and aerial capture of mountain pine beetle, Dendroctonus ponderosae Hopk. (Coleoptera: Scolytidae) in flight above the forest canopy

2008 ◽  
Vol 38 (8) ◽  
pp. 2313-2327 ◽  
Author(s):  
Peter L. Jackson ◽  
Dennis Straussfogel ◽  
B. Staffan Lindgren ◽  
Selina Mitchell ◽  
Brendan Murphy
Keyword(s):  
Mountain Pine Beetle ◽  
Forest Canopy ◽  
Dendroctonus Ponderosae ◽  
Weather Radar ◽  
Mountain Pine Beetles ◽  
Emergence Period ◽  
Transport Distance ◽  
Mountain Pine ◽  
Pine Beetle ◽  
Pine Beetles

An outbreak of the mountain pine beetle ( Dendroctonus ponderosae Hopk.) in central British Columbia, Canada, has reached an unprecedented size and intensity and has been spreading. The 2005 emergence and subsequent flight of mountain pine beetle was studied using direct observation of emergence, weather radar imagery, and aerial capture. To verify that the daytime, clear-air radar returns seen during this period were indeed generated by airborne mountain pine beetles, aerial sampling in the area covered by the radar was performed using a drogue capture net towed by a single-engine light aircraft. Results verify that airborne mountain pine beetles are being detected by the weather radar and that, during the emergence period, significant numbers of mountain pine beetles can be found at altitudes up to more than 800 m above the forest canopy. An estimate of transport distance indicates that mountain pine beetles in flight above the forest canopy may move 30–110 km·day–1. An estimate of the instantaneous density of mountain pine beetles in flight above the canopy on flight days in 2005 indicate a mean (maximum) density of 4950 (18 600) beetles·ha–1.

An Examination of the Relative Associations of Prototype Favorability, Similarity, and Their Interaction With Alcohol and Alcohol-Related Risky Sexual Cognitions and Behavior

2018 ◽  
Vol 8 (2) ◽  
pp. 168-174
Author(s):  
Dana M. Litt ◽  
Melissa A. Lewis ◽  
Anne M. Fairlie ◽  
Maya K. Head-Corliss
Keyword(s):  
Alcohol Use ◽  
Emerging Adults ◽  
Risk Behavior ◽  
Risk Behaviors ◽  
Clinical Applications ◽  
Cognitive Outcomes ◽  
Predictive Utility ◽  
Sexual Cognitions ◽  
Related Risk ◽  
And Behavior

Prototypes are defined as the image a person holds of the typical person who engages in risk behavior and are comprised of favorability toward the prototype and similarity to the prototype. Despite both being posited as important prototype dimensions, the findings regarding their predictive utility are mixed, and most research has focused on alcohol use and not other related risk behaviors. Thus, the present study examined whether both prototype dimensions (prototype favorability, prototype similarity) as well as their interaction predicted alcohol and alcohol-related sexual cognitions and behavior. Results from 294 emerging adults indicated that prototype similarity (but not prototype favorability or their interaction) predicted both behavioral and cognitive outcomes. Results suggest that researchers utilizing prototypes should be mindful of which prototype dimensions they include in their guiding theory and subsequent clinical applications.

Suicidal Mental Imagery: Investigating a Novel Marker of Suicide Risk

2021 ◽  
pp. 216769682110015
Author(s):  
Hannah R. Lawrence ◽  
Jacqueline Nesi ◽  
Rebecca A. Schwartz-Mette
Keyword(s):  
Suicidal Ideation ◽  
Emerging Adults ◽  
Mental Imagery ◽  
Self Report ◽  
Suicide Assessment ◽  
Verbal Thought ◽  
History Of ◽  
Novel Target ◽  
And Behavior ◽  
Suicide Plan

Rates of suicidal ideation and behavior are high and increasing in emerging adulthood. Research focused on suicidal ideation as a predictor of suicidal behavior has nearly exclusively conceptualized suicidal ideation as verbal thoughts about suicide. Emerging research suggests, however, that mentally imagining suicide may be even more impairing than verbal thoughts about suicide. Thirty-nine emerging adults with a lifetime history of suicidal cognitions completed self-report assessments of characteristics of their suicidal cognitions, histories of suicide plans and behavior, and the degree to which their suicidal cognitions took the form of mental imagery or verbal thought. Suicidal mental imagery predicted more intense and longer duration of suicidal cognitions, a higher likelihood of having made a suicide plan, and a higher likelihood of having made a suicide attempt over and above suicidal verbal thoughts. Thus, suicidal mental imagery could provide a novel target for suicide assessment and intervention for emerging adults.

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