Pollination by Birds

2011 ◽  
Author(s):  
Pat Willmer
Keyword(s):  
Feeding Apparatus ◽  
Bird Pollination ◽  
Sensory Capacity ◽  
Learning Capabilities ◽  
Widespread Phenomenon ◽  
Common Birds ◽  
And Behavior ◽  
Extreme Specialization

This chapter focuses on pollination by birds. Bird pollination, or ornithophily, is a widespread phenomenon. Many common birds visit flowers by biting through or piercing their corollas, notably tits and warblers. Birds primarily take nectar from flowers, although some may also eat pollen and occasionally take solid floral tissues. The chapter first provides an overview of the bird’s feeding apparatus, sensory capacity, and behavior and learning capabilities before discussing various types of flowers that are pollinated by birds such as hummingbirds and perching birds. The foraging behaviors of these birds are also considered, along with the ornithophilous syndrome. The chapter concludes with some observations on why extreme specialization is precluded in ornithophilous relationships.

scholarly journals Sensory Capacity and Behavior of Insects

1988 ◽  
Vol 6 (3) ◽  
pp. 240-244
Author(s):  
Tateo SHIMOZAWA
Keyword(s):  
Sensory Capacity ◽  
And Behavior

scholarly journals Psychopathology and Borderline Personality Pathology Associated with Lifetime Self-Injurious Behavior in Adolescent Psychiatric Inpatients and Detainees

2017 ◽  
Vol 45 (6) ◽  
pp. 441-451 ◽  
Author(s):  
Julian Koenig ◽  
Romuald Brunner ◽  
Johannes Michael Schmidt ◽  
Peter Parzer ◽  
Franz Resch ◽  
...  
Keyword(s):  
Emotional Problems ◽  
Psychiatric Inpatients ◽  
Borderline Personality ◽  
Personality Pathology ◽  
Correctional Facilities ◽  
General Psychopathology ◽  
The Past ◽  
Self Reports ◽  
Widespread Phenomenon ◽  
And Behavior

Abstract. Objective: Self-injurious behavior (SIB) is a widespread phenomenon among adolescent psychiatric inpatients. It is also reported among delinquent adolescents detained in correctional facilities. While previous studies have addressed different functions of SIB within offender populations, here we investigate particular patterns of borderline personality pathology and psychopathology underlying SIB in both adolescent psychiatric inpatients and detainees. Method: Adolescent psychiatric inpatients and detainees were recruited consecutively. Participants completed self-reports on SIB, suicidal thoughts and behavior, borderline personality pathology, and general psychopathology. Predictors of lifetime SIB by group were analyzed. Results: Psychiatric inpatients (n = 77) and detainees (n = 50) did not differ with respect to lifetime SIB (57.14 % versus 54.00 %), whereas SIB within the past year did (67.53 % versus 14 %; χ2(1) = 6.158, p = .013). Psychiatric inpatients reported greater emotional problems (t(125) = 5.109, p < .0001) and greater borderline personality pathology. Those with lifetime SIB were characterized by greater emotional problems and borderline personality pathology, independent of their group. Results from regression analyses suggest no group-specific predictors of lifetime SIB. Conclusions: Although psychiatric inpatients endorse greater psychopathological distress, lifetime SIB among adolescent psychiatric inpatients and detainees is associated with similar patterns of psychopathology and borderline personality pathology.

Morphology and behavior of the feeding apparatus inCryptobranchus alleganiensis (Amphibia: Caudata)

1994 ◽  
Vol 220 (1) ◽  
pp. 47-70 ◽  
Author(s):  
Jennifer R. Lorenz Elwood ◽  
David Cundall
Keyword(s):  
Feeding Apparatus ◽  
And Behavior

The feeding apparatus of the salamanderAmphiuma tridactylum: Morphology and behavior

1984 ◽  
Vol 181 (2) ◽  
pp. 175-204 ◽  
Author(s):  
Susan Erdman ◽  
David Cundall
Keyword(s):  
Feeding Apparatus ◽  
And Behavior

How Homo economicus lost her mind and how we can revive her

2018 ◽  
Vol 41 ◽  
Author(s):  
Peter DeScioli
Keyword(s):  
Economic Thought ◽  
History Of Economic Thought ◽  
Homo Economicus ◽  
Economic Theories ◽  
Target Article ◽  
History Of ◽  
The Mind ◽  
And Behavior

AbstractThe target article by Boyer & Petersen (B&P) contributes a vital message: that people have folk economic theories that shape their thoughts and behavior in the marketplace. This message is all the more important because, in the history of economic thought, Homo economicus was increasingly stripped of mental capacities. Intuitive theories can help restore the mind of Homo economicus.

The parent-offspring microbiome and neurobehavioral development

2019 ◽  
Vol 42 ◽  
Author(s):  
Jeffrey R. Alberts ◽  
Christopher Harshaw ◽  
Gregory E. Demas ◽  
Cara L. Wellman ◽  
Ardythe L. Morrow
Keyword(s):  
Mammalian Species ◽  
Social Emotional ◽  
Behavioral Measures ◽  
Neurobehavioral Development ◽  
Emotional Function ◽  
Neurobehavioral Outcomes ◽  
Methodological Approaches ◽  
And Behavior

Abstract We identify the significance and typical requirements of developmental analyses of the microbiome-gut-brain (MGB) in parents, offspring, and parent-offspring relations, which have particular importance for neurobehavioral outcomes in mammalian species, including humans. We call for a focus on behavioral measures of social-emotional function. Methodological approaches to interpreting relations between the microbiota and behavior are discussed.

The Tempo and mode(S) of Prebiotic Evolution

1997 ◽  
Vol 161 ◽  
pp. 419-429 ◽  
Author(s):  
Antonio Lazcano
Keyword(s):  
Origin Of Life ◽  
Organic Compounds ◽  
Biological Evolution ◽  
Current Evidence ◽  
Early Diversification ◽  
Time Period ◽  
The Galaxy ◽  
History Of ◽  
Widespread Phenomenon ◽  
The Origin Of Life

AbstractDifferent current ideas on the origin of life are critically examined. Comparison of the now fashionable FeS/H2S pyrite-based autotrophic theory of the origin of life with the heterotrophic viewpoint suggest that the later is still the most fertile explanation for the emergence of life. However, the theory of chemical evolution and heterotrophic origins of life requires major updating, which should include the abandonment of the idea that the appearance of life was a slow process involving billions of years. Stability of organic compounds and the genetics of bacteria suggest that the origin and early diversification of life took place in a time period of the order of 10 million years. Current evidence suggest that the abiotic synthesis of organic compounds may be a widespread phenomenon in the Galaxy and may have a deterministic nature. However, the history of the biosphere does not exhibits any obvious trend towards greater complexity or «higher» forms of life. Therefore, the role of contingency in biological evolution should not be understimated in the discussions of the possibilities of life in the Universe.

TEM evaluation of graded SixGe1-x heterolayers

1991 ◽  
Vol 49 ◽  
pp. 894-895
Author(s):  
N. David Theodore ◽  
Mamoru Tomozane ◽  
Ming Liaw
Keyword(s):  
Heterojunction Bipolar Transistors ◽  
Gas Flow ◽  
Field Effect Transistors ◽  
Chemical Vapor ◽  
Dark Field ◽  
Bipolar Transistors ◽  
Structural Quality ◽  
Weak Beam ◽  
Transmission Electron ◽  
And Behavior

There is extensive interest in SiGe for use in heterojunction bipolar transistors. SiGe/Si superlattices are also of interest because of their potential for use in infrared detectors and field-effect transistors. The processing required for these materials is quite compatible with existing silicon technology. However, before SiGe can be used extensively for devices, there is a need to understand and then control the origin and behavior of defects in the materials. The present study was aimed at investigating the structural quality of, and the behavior of defects in, graded SiGe layers grown by chemical vapor deposition (CVD).The structures investigated in this study consisted of Si1-xGex[x=0.16]/Si1-xGex[x= 0.14, 0.13, 0.12, 0.10, 0.09, 0.07, 0.05, 0.04, 0.005, 0]/epi-Si/substrate heterolayers grown by CVD. The Si1-xGex layers were isochronally grown [t = 0.4 minutes per layer], with gas-flow rates being adjusted to control composition. Cross-section TEM specimens were prepared in the 110 geometry. These were then analyzed using two-beam bright-field, dark-field and weak-beam images. A JEOL JEM 200CX transmission electron microscope was used, operating at 200 kV.

Formation of defects in implanted hipox-structures

1992 ◽  
Vol 50 (2) ◽  
pp. 1406-1407
Author(s):  
Peter Pegler ◽  
N. David Theodore ◽  
Ming Pan
Keyword(s):  
High Pressure ◽  
Cross Section ◽  
Semiconductor Devices ◽  
Silicon Substrates ◽  
Processing Conditions ◽  
Pressure Oxidation ◽  
Deep Trench ◽  
Local Oxidation ◽  
Trench Isolation ◽  
And Behavior

High-pressure oxidation of silicon (HIPOX) is one of various techniques used for electrical-isolation of semiconductor-devices on silicon substrates. Other techniques have included local-oxidation of silicon (LOCOS), poly-buffered LOCOS, deep-trench isolation and separation of silicon by implanted oxygen (SIMOX). Reliable use of HIPOX for device-isolation requires an understanding of the behavior of the materials and structures being used and their interactions under different processing conditions. The effect of HIPOX-related stresses in the structures is of interest because structuraldefects, if formed, could electrically degrade devices.This investigation was performed to study the origin and behavior of defects in recessed HIPOX (RHIPOX) structures. The structures were exposed to a boron implant. Samples consisted of (i) RHlPOX'ed strip exposed to a boron implant, (ii) recessed strip prior to HIPOX, but exposed to a boron implant, (iii) test-pad prior to HIPOX, (iv) HIPOX'ed region away from R-HIPOX edge. Cross-section TEM specimens were prepared in the <110> substrate-geometry.

Language and Behavior Disorders in School-Age Children: Comorbidity and Communication in the Classroom

2012 ◽  
Vol 13 (4) ◽  
pp. 111-119 ◽  
Author(s):  
Alexandra Hollo
Keyword(s):  
Language Impairment ◽  
Mental Health Problems ◽  
Language Disorder ◽  
School Age Children ◽  
School Age ◽  
Social Emotional ◽  
Behavioral Support ◽  
School Professionals ◽  
Development Characteristic ◽  
And Behavior

Language development is the foundation for competence in social, emotional, behavioral, and academic performance. Although language impairment (LI) is known to co-occur with behavioral and mental health problems, LI is likely to be overlooked in school-age children with emotional and behavioral disorders (EBD; Hollo, Wehby, & Oliver, in press). Because language deficits may contribute to the problem behavior and poor social development characteristic of children with EBD, the consequences of an undiagnosed language disorder can be devastating. Implications include the need to train school professionals to recognize communication deficits. Further, it is critically important that specialists collaborate to provide linguistic and behavioral support for students with EBD and LI.

Sign in / Sign up

Export Citation Format

Share Document