scholarly journals Locomotion and searching behaviour in the honey bee larva depend on nursing interaction

Apidologie ◽  
2021 ◽  
Author(s):  
Diego E. Vázquez ◽  
Walter M. Farina
Keyword(s):  
Angular Velocity ◽  
Honey Bee ◽  
Food Supply ◽  
Tactile Stimulus ◽  
Kinematic Parameters ◽  
Searching Behaviour ◽  
Developmental Program ◽  
Laboratory Conditions ◽  
Larval Behaviour ◽  
Honey Bee Larvae

AbstractAlthough honey bee brood does not need to seek shelter or food and restricts its movements to small wax cells, larvae have some degree of motility. Previously, other studies described how honey bee larvae showed analogous behaviours to the wandering period in holometabolous insects. The current research aimed to measure locomotion of the honey bee brood at different conditions of food supply and larval stadia. Besides, we developed an actometry assay to describe the larval behaviour under laboratory conditions. Our results suggested that the satiety and developmental program of larvae modulated their locomotion. Before they pupated, larval speed increased sharply and then it dropped until quiescence. However, starvation also induced an increase in angular velocity of brood. Starved larvae were between three and five times faster than the satiated ones. Moreover, fifth instars left their wax cells after 2 h of starvation without nurse bees. In the actometry assay, larvae showed behaviours of dispersion and changes in their kinematic parameters after detecting a tactile stimulus like the edge of arenas.

Identification and Treatment of European Foulbrood in Honey Bee Colonies

EDIS ◽  
2020 ◽  
Vol 2020 (1) ◽  
pp. 7
Author(s):  
Catherine M. Mueller ◽  
Cameron Jack ◽  
Ashley N. Mortensen ◽  
Jamie D. Ellis
Keyword(s):  
Honey Bee ◽  
Bacterial Disease ◽  
American Foulbrood ◽  
Fact Sheet ◽  
European Foulbrood ◽  
Bee Colonies ◽  
Honey Bee Larvae

European foulbrood is a bacterial disease that affects Western honey bee larvae. It is a concern to beekeepers everywhere, though it is less serious than American foulbrood because it does not form spores, which means that it can be treated. This 7-page fact sheet written by Catherine M. Mueller, Cameron J. Jack, Ashley N. Mortensen, and Jamie Ellis and published by the UF/IFAS Entomology and Nematology Department describes the disease and explains how to identify it to help beekeepers manage their colonies effectively and prevent the spread of both American and European foulbrood.https://edis.ifas.ufl.edu/in1272

scholarly journals Juvenile hormone pathway in honey bee larvae: A source of possible signal molecules for the reproductive behavior of Varroa destructor

2020 ◽  
Author(s):  
Cristian M. Aurori ◽  
Alexandru‐Ioan Giurgiu ◽  
Benjamin H. Conlon ◽  
Chedly Kastally ◽  
Daniel S. Dezmirean ◽  
...  
Keyword(s):  
Juvenile Hormone ◽  
Honey Bee ◽  
Reproductive Behavior ◽  
Varroa Destructor ◽  
Signal Molecules ◽  
Honey Bee Larvae

Sex-specific developmental profiles of juvenile hormone synthesis in honey bee larvae

1993 ◽  
Vol 202 (3) ◽  
pp. 176-180 ◽  
Author(s):  
Klaus Hartfelder ◽  
Sibele Oliveira Tozetto ◽  
Anna Rachinsky
Keyword(s):  
Juvenile Hormone ◽  
Honey Bee ◽  
Hormone Synthesis ◽  
Developmental Profiles ◽  
Honey Bee Larvae

A Method of Rearing Honey Bee Larvae in vitro1

1955 ◽  
Vol 48 (1) ◽  
pp. 43-44 ◽  
Author(s):  
A. S. Michael ◽  
M. Abramovitz
Keyword(s):  
Honey Bee ◽  
Honey Bee Larvae

scholarly journals Investigation of Changes of the Kinematic Parameters of Antarctic Tectonic Plate Using Data Observations of Permanent GNSS Stations

2017 ◽  
Vol 103 (1) ◽  
pp. 119-135 ◽  
Author(s):  
Kornylii Tretyak ◽  
Al-Alusi Forat ◽  
Yurii Holubinka
Keyword(s):  
Angular Velocity ◽  
Kinematic Parameters ◽  
Antarctic Region ◽  
Tectonic Plate ◽  
Euler Pole ◽  
The Mean ◽  
Using Data ◽  
Gnss Permanent Stations ◽  
The Antarctic

Abstract The paper describes a modified algorithm of determination of the Euler pole coordinates and angular velocity of the tectonic plate, considering the continuous and uneven distribution of daily measurements of GNSS permanent stations. Using developed algorithm were determined the mean position of Euler pole and angular velocity of Antarctic tectonic plate and their annual changes. As the input data, we used the results of observations, collected on 28 permanent stations of the Antarctic region, within the period from 1996 to 2014.

scholarly journals Response of in vitro reared honey bee larvae to various doses of Paenibacillus larvae larvae spores

Apidologie ◽  
1998 ◽  
Vol 29 (6) ◽  
pp. 569-578 ◽  
Author(s):  
Camilla J. Brødsgaard ◽  
Wolfgang Ritter ◽  
Henrik Hansen
Keyword(s):  
Honey Bee ◽  
Paenibacillus Larvae ◽  
Honey Bee Larvae

Glyphosate-based herbicides and Nosema sp. microsporidia reduce honey bee (Apis mellifera L.) survivability under laboratory conditions

2020 ◽  
Vol 59 (4) ◽  
pp. 332-342 ◽  
Author(s):  
Márcia Regina Faita ◽  
Mayara Martins Cardozo ◽  
Dylan Thomas Telles Amandio ◽  
Afonso Inácio Orth ◽  
Rubens Onofre Nodari
Keyword(s):  
Apis Mellifera ◽  
Honey Bee ◽  
Laboratory Conditions

Effects of Bat Grip on Baseball Hitting Kinematics

2009 ◽  
Vol 25 (3) ◽  
pp. 203-209 ◽  
Author(s):  
Rafael F. Escamilla ◽  
Glenn S. Fleisig ◽  
Coop DeRenne ◽  
Marcus K. Taylor ◽  
Claude T. Moorman ◽  
...  
Keyword(s):  
Angular Velocity ◽  
Range Of Motion ◽  
Elbow Flexion ◽  
Linear Velocity ◽  
Elbow Extension ◽  
Kinematic Parameters ◽  
Time Duration ◽  
Motion System ◽  
Ball Contact ◽  
Pelvis Rotation

A motion system collected 120-Hz data from 14 baseball adult hitters using normal and choke-up bat grips. Six swings were digitized for each hitter, and temporal and kinematic parameters were calculated. Compared with a normal grip, the choke-up grip resulted in 1) less time during stride phase and swing; 2) the upper torso more opened at lead foot contact; 3) the pelvis more closed and less bat linear velocity at bat-ball contact; 4) less range of motion of the upper torso and pelvis during swing; 5) greater elbow flexion at lead foot contact; and 6) greater peak right elbow extension angular velocity. The decreased time during the stride phase when using a choke-up grip implies that hitters quicken their stride when they choke up. Less swing time duration and less upper torso and pelvis rotation range of motion using the choke-up grip supports the belief of many coaches and players that using a choke-up grip results in a “quicker” swing. However, the belief that using a choke-up grip leads to a faster moving bat was not supported by the results of this study.

scholarly journals Toxicity and biochemical changes in the honey bee Apis mellifera exposed to four insecticides under laboratory conditions

Apidologie ◽  
2014 ◽  
Vol 46 (2) ◽  
pp. 177-193 ◽  
Author(s):  
Mohamed E. I. Badawy ◽  
Hoda M. Nasr ◽  
Entsar I. Rabea
Keyword(s):  
Apis Mellifera ◽  
Honey Bee ◽  
Biochemical Changes ◽  
Laboratory Conditions

scholarly journals Reclassification of Paenibacillus larvae subsp. pulvifaciens and Paenibacillus larvae subsp. larvae as Paenibacillus larvae without subspecies differentiation

2006 ◽  
Vol 56 (3) ◽  
pp. 501-511 ◽  
Author(s):  
Elke Genersch ◽  
Eva Forsgren ◽  
Jaana Pentikäinen ◽  
Ainura Ashiralieva ◽  
Sandra Rauch ◽  
...  
Keyword(s):  
Honey Bee ◽  
Paenibacillus Larvae ◽  
Rrna Gene ◽  
Subspecies Differentiation ◽  
Field Isolates ◽  
Sds Page ◽  
Clear Identification ◽  
Bee Colonies ◽  
Honey Bee Larvae ◽  
Reference Strains

A polyphasic taxonomic study of the two subspecies of Paenibacillus larvae, Paenibacillus larvae subsp. larvae and Paenibacillus larvae subsp. pulvifaciens, supported the reclassification of the subspecies into one species, Paenibacillus larvae, without subspecies separation. Our conclusions are based on the analysis of six reference strains of P. larvae subsp. pulvifaciens and three reference strains and 44 field isolates of P. larvae. subsp. larvae. The latter originated from brood or honey of clinically diseased honey bee colonies or from honey of both clinically diseased and asymptomatic colonies from Sweden, Finland and Germany. Colony and spore morphology, as well as the metabolism of mannitol and salicin, did not allow a clear identification of the two subspecies and SDS-PAGE of whole-cell proteins did not support the subspecies differentiation. For genomic fingerprinting, repetitive element-PCR fingerprinting using ERIC primers and PFGE of bacterial DNA were performed. The latter method is a high-resolution DNA fingerprinting method proven to be superior to most other methods for biochemical and molecular typing and has not previously been used to characterize P. larvae. ERIC-PCR identified four different genotypes, while PFGE revealed two main clusters. One cluster included most of the P. larvae subsp. larvae field isolates, as well as all P. larvae subsp. pulvifaciens reference strains. The other cluster comprised the pigmented variants of P. larvae subsp. larvae. 16S rRNA gene sequences were determined for some strains. Finally, exposure bioassays demonstrated that reference strains of P. larvae subsp. pulvifaciens were pathogenic for honey bee larvae, producing symptoms similar to reference strains of P. larvae subsp. larvae. In comparison with the type strain for P. larvae subsp. larvae, ATCC 9545T, the P. larvae subsp. pulvifaciens strains tested were even more virulent, since they showed a shorter LT100. An emended description of the species is given.

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