scholarly journals Morphological Changes in the Mandibles Accompany the Defensive Behavior of Indiana Mite Biting Honey Bees Against Varroa Destructor

2021 ◽  
Vol 9 ◽  
Author(s):  
Jada Smith ◽  
Xaryn L. Cleare ◽  
Krispn Given ◽  
Hongmei Li-Byarlay
Keyword(s):  
United States ◽  
Honey Bee ◽  
Varroa Destructor ◽  
Structural Changes ◽  
Morphological Changes ◽  
Scientific Evidence ◽  
The United States ◽  
Colony Losses ◽  
Biting Behavior ◽  
Worker Bee

The honey bee (Apis mellifera) is the most important managed pollinator to sustainable agriculture and our ecosystem. Yet managed honey bee colonies in the United States experience 30–40% losses annually. Among the many biotic stressors, the parasitic mite Varroa destructor is considered one of the main causes of colony losses. Bees’ mite-biting behavior has been selected as a Varroa-tolerant or Varroa-resistant trait in the state of Indiana for more than a decade. A survey of damaged mites from the bottom of a colony can be used as an extended phenotype to evaluate the mite-biting behavior of a colony. In this study, on average, 37% of mites sampled from the breeding stocks of 59 colonies of mite biters in Indiana were damaged or mutilated, which is significantly higher than the 19% of damaged mites found in commercial colonies in the southern United States. Indiana mite biter colonies had a higher proportion of damaged mites, although among the damaged mites, the number of missing legs was not significantly higher. In addition, the morphology of pollen-forager worker bee mandibles was compared by X-ray microcomputed tomography for six parameters in two populations, and a difference was detected in one parameter. Our results provide scientific evidence that potentially explains the defensive mechanism against Varroa mites: structural changes in the worker bee mandibles.

scholarly journals The defensive behavior of Indiana mite biting honeybees against Varroa destructor and the structure of mandibles

2020 ◽  
Author(s):  
Jada Smith ◽  
Xaryn L Cleare ◽  
Krispn Given ◽  
Hongmei Li-Byarlay
Keyword(s):  
United States ◽  
Varroa Destructor ◽  
Scientific Evidence ◽  
The United States ◽  
Micro Computed Tomography ◽  
Colony Losses ◽  
Significant Difference ◽  
The Difference ◽  
States Experience ◽  
Biting Behavior

The honeybees (Apis mellifera) are the most important managed pollinator for sustainable agriculture and our ecosystem. However, the managed honeybee colonies in the United States experience 30-40% of losses annually. Among all the biotic stressors, the parasitic mite Varroa destructor is considered as one of the main pests for colony losses. The mite biting behavior as a Varroa tolerant or resistant trait has been selected in the State of Indiana for a decade. A survey of damaged mites from the bottom of a colony can be used as an extended phenotype of the mite biting behavior to evaluate a colony. On average 37% of mites sampled were damaged or mutilated from the breeding stocks of 59 colonies of mite biters of Indiana, which is significantly higher than 19% of damaged mites in commercial colonies from the Southern United States. No significant difference was detected between the damage of missing legs between breeding stocks and commercial colonies. In addition, the morphology of pollen forager worker mandibles were compared between two populations via X-ray micro-computed tomography using six parameters, and the difference was detected in one parameter. Our results showed the novel scientific evidence to explain the potential defensive mechanism against Varroa mites via mandibles providing a significant knowledge of a defensive behavioral trait for mite resistance.

Use of Chemical and Nonchemical Methods for the Control of Varroa destructor (Acari: Varroidae) and Associated Winter Colony Losses in U.S. Beekeeping Operations

2019 ◽  
Vol 112 (4) ◽  
pp. 1509-1525 ◽  
Author(s):  
Ariela I Haber ◽  
Nathalie A Steinhauer ◽  
Dennis vanEngelsdorp
Keyword(s):  
United States ◽  
Varroa Destructor ◽  
Large Scale ◽  
The United States ◽  
Small Scale ◽  
Control Methods ◽  
Colony Losses ◽  
Potential Control ◽  
Winter Losses ◽  
Varroa Control

Abstract The parasitic mite Varroa destructor (Acari: Varroidae) is a major cause of overwintering honey bee (Apis mellifera) colony losses in the United States, suggesting that beekeepers must control Varroa populations to maintain viable colonies. Beekeepers have access to several chemical varroacides and nonchemical practices to control Varroa populations. However, no studies have examined large-scale patterns in Varroa control methods in the United States. Here we used responses from 4 yr of annual surveys of beekeepers representing all regions and operation sizes across the United States to investigate use of Varroa control methods and winter colony losses associated with use of different methods. We focused on seven varroacide products (amitraz, coumaphos, fluvalinate, hop oil, oxalic acid, formic acid, and thymol) and six nonchemical practices (drone brood removal, small-cell comb, screened bottom boards, powdered sugar, mite-resistant bees, and splitting colonies) suggested to aid in Varroa control. We found that nearly all large-scale beekeepers used at least one varroacide, whereas small-scale beekeepers were more likely to use only nonchemical practices or not use any Varroa control. Use of varroacides was consistently associated with the lowest winter losses, with amitraz being associated with lower losses than any other varroacide product. Among nonchemical practices, splitting colonies was associated with the lowest winter losses, although losses associated with sole use of nonchemical practices were high overall. Our results suggest potential control methods that are effective or preferred by beekeepers and should therefore inform experiments that directly test the efficacy of different control methods. This will allow beekeepers to incorporate Varroa control methods into management plans that improve the overwintering success of their colonies.

scholarly journals A survey of honey bee colony losses in the United States, fall 2008 to spring 2009

2010 ◽  
Vol 49 (1) ◽  
pp. 7-14 ◽  
Author(s):  
Dennis vanEngelsdorp ◽  
Jerry Hayes ◽  
Robyn M Underwood ◽  
Jeffery S Pettis
Keyword(s):  
United States ◽  
Honey Bee ◽  
The United States ◽  
Colony Losses ◽  
Bee Colony ◽  
Honey Bee Colony ◽  
Honey Bee Colony Losses

scholarly journals Recent spread of Varroa destructor virus-1, a honey bee pathogen, in the United States

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Eugene V. Ryabov ◽  
Anna K. Childers ◽  
Yanping Chen ◽  
Shayne Madella ◽  
Ashrafun Nessa ◽  
...  
Keyword(s):  
United States ◽  
Honey Bee ◽  
Varroa Destructor ◽  
The United States

scholarly journals A national survey of managed honey bee 2011–12 winter colony losses in the United States: results from the Bee Informed Partnership

2013 ◽  
Vol 52 (2) ◽  
pp. 44-53 ◽  
Author(s):  
Angela M Spleen ◽  
Eugene J Lengerich ◽  
Karen Rennich ◽  
Dewey Caron ◽  
Robyn Rose ◽  
...  
Keyword(s):  
United States ◽  
Honey Bee ◽  
National Survey ◽  
The United States ◽  
Colony Losses

Are Non-Target Honey Bees (Hymenoptera: Apidae) Exposed to Dinotefuran From Spotted Lanternfly (Hemiptera: Fulgoridae) Trap Trees?

2019 ◽  
Vol 112 (6) ◽  
pp. 2993-2996 ◽  
Author(s):  
Robyn Underwood ◽  
Brian Breeman ◽  
Joseph Benton ◽  
Jason Bielski ◽  
Julie Palkendo ◽  
...  
Keyword(s):  
Honey Bee ◽  
Honey Bees ◽  
High Performance ◽  
Host Plants ◽  
The United States ◽  
Quechers Method ◽  
Significant Damage ◽  
Lycorma Delicatula ◽  
Bee Colonies ◽  
Worker Bee

Abstract The spotted lanternfly, Lycorma delicatula, is an introduced plant hopper that causes significant damage to host plants in the United States. Because of its affinity for tree of heaven, Ailanthus altissima, control efforts have focused on the use of the systemic insecticide, dinotefuran, in designated trap trees. There is concern about exposure to this pesticide by non-target species, especially honey bees, Apis mellifera, via lanternfly honeydew. Therefore, honey bee colonies were established in areas of high densities of trap trees and samples of honey, bees, and beeswax were collected in May, July, and October of 2017 for analysis. Samples were extracted by the QuEChERS method and analyzed using high-performance liquid chromatography with tandem mass spectrometry to determine the presence and quantity of dinotefuran. Additionally, honeydew from lanternflies was analyzed for dinotefuran and informal observations of trap tree visitors were made. None of the worker bee, wax, or honey samples indicated detectable levels of dinotefuran; however, honeydew samples collected did contain dinotefuran above the detection limit with amounts ranging from 3 to 100 ng per sample. The lack of dinotefuran in honey bee products matches the general absence of honey bees at trap trees in informal observations.

Corporal Punishment

PEDIATRICS ◽  
1995 ◽  
Vol 96 (4) ◽  
pp. 792-793
Author(s):  
Den A. Trumbull ◽  
DuBose Ravenel ◽  
David Larson
Keyword(s):  
United States ◽  
Primary Care ◽  
Social Policy ◽  
Violence Prevention ◽  
Corporal Punishment ◽  
Primary Care Physicians ◽  
Scientific Evidence ◽  
The United States

The supplement to Pediatrics entitled "The Role of the Pediatrician in Violence Prevention" is timely, given the increasingly serious violence problem in the United States.1 Many of the supplement's recommendations are well-conceived and developed. However, the recommendation to "work toward the ultimate goal of ending corporal punishment in homes" (page 580)2 is unwarranted and counterproductive. Before one advises against a practice approved by 88% of American parents3 and supported by 67% of primary care physicians,4 there should be sufficient scientific evidence to support the proposed change in social policy.

scholarly journals Nursing care in the anesthetic procedure: an integrative review

2016 ◽  
Vol 50 (1) ◽  
pp. 154-162 ◽  
Author(s):  
Cassiane de Santana Lemos ◽  
Aparecida de Cassia Giani Peniche
Keyword(s):  
United States ◽  
Health System ◽  
Patient Care ◽  
Nursing Care ◽  
Scientific Evidence ◽  
The United States ◽  
Nurse Anesthetists ◽  
Integrative Review ◽  
Nursing Professional

Abstract OBJECTIVE To search for the scientific evidence available on nursing professional actions during the anesthetic procedure. METHOD An integrative review of articles in Portuguese, English and Spanish, indexed in MEDLINE/PubMed, CINAHL, LILACS, National Cochrane, SciELO databases and the VHL portal. RESULTS Seven studies were analyzed, showing nurse anesthetists' work in countries such as the United States and parts of Europe, with the formulation of a plan for anesthesia and patient care regarding the verification of materials and intraoperative controls. The barriers to their performance involved working in conjunction with or supervised by anesthesiologists, the lack of government guidelines and policies for the legal exercise of the profession, and the conflict between nursing and the health system for maintenance of the performance in places with legislation and defined protocols for the specialty. Conclusion Despite the methodological weaknesses found, the studies indicated a wide diversity of nursing work. Furthermore, in countries absent of the specialty, like Brazil, the need to develop guidelines for care during the anesthetic procedure was observed.

Judges, Juries, and the History of Criminal Appeals

2011 ◽  
Vol 29 (1) ◽  
pp. 297-302
Author(s):  
Benjamin L. Berger
Keyword(s):  
United States ◽  
Criminal Justice ◽  
Criminal Law ◽  
Legal History ◽  
Structural Changes ◽  
Criminal Procedure ◽  
The United States ◽  
Early History ◽  
Criminal Justice Systems ◽  
History Of

The three articles offered in this forum on the early history of criminal appeals do us the great service of adding much of interest on this important but neglected issue in the development of Anglo–North American criminal procedure. The opaqueness of the legal history of criminal appeals stands in stark contrast to their centrality and apparent naturalness in contemporary criminal justice systems in England, Canada, and the United States. These three papers look at the period leading up to and immediately following the creation of the first formalized system of what we might call criminal appeals, the establishment of the Court of Crown Cases Reserved (CCCR) in 1848. This key period in the development of the adversary criminal trial was marked by both a concerted political effort to codify and rationalize the criminal law and by profound structural changes in the management of criminal justice.

scholarly journals Century-Long Dynamics of the Land Use Structure in the United States

2020 ◽  
pp. 220-231
Author(s):  
Valerij Minat
Keyword(s):  
United States ◽  
Land Use ◽  
Structural Changes ◽  
The United States ◽  
Structural Features ◽  
Summary Table ◽  
Land Use Structure ◽  
Periodic Dynamics ◽  
Space Dynamics ◽  
American Society

The paper studies the experience of American land use in the twentieth century on the territory of 48 contiguous continental states. Changes in time and space (dynamics) of the main indicators of distribution and use of land resources that form the structural appearance of the U.S. land fund are shown. Based on the analysis of the countrys land use structure, the resulting part of which is a summary table, the periodic dynamics of the land use structure (in twenty-year time intervals) is considered, and the dependence of structural changes in land use on the level and nature of the socio-economic development of American society is shown. The study of the age-old dynamics of structural features of American land use conducted on the basis of scientific materials of American scientists and data from official American statistics makes it possible to draw generalizing conclusions about the nature of land use in the United States, both in the whole country and in the regional aspect. As a result, the author has obtained a generalized scientific picture of how the structure of land use in the continental part of the country (without Alaska) has changed over the course of a century in the direction from maximum to optimal use of natural resources.

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