Influence of the insecticide pyriproxyfen on the flight muscle differentiation of Apis mellifera (Hymenoptera, Apidae)

2012 ◽  
Vol 75 (6) ◽  
pp. 844-848 ◽  
Author(s):  
Fernanda Corrêa Fernandez ◽  
Carminda Da Cruz-Landim ◽  
Osmar Malaspina
Keyword(s):  
Apis Mellifera ◽  
Flight Muscle ◽  
Muscle Differentiation

scholarly journals Tissue-specific transcriptional patterns underlie seasonal phenotypes in honey bees (Apis mellifera)

2021 ◽  
Author(s):  
Sean Bresnahan ◽  
Mehmet Döke ◽  
Tugrul Giray ◽  
Christina Grozinger
Keyword(s):  
Apis Mellifera ◽  
Honey Bees ◽  
Flight Muscle ◽  
Fat Body ◽  
Expression Patterns ◽  
Flight Activity ◽  
Insect Species ◽  
Tissue Specific ◽  
Transcriptional Profiles ◽  
Specific Regulation

Faced with adverse conditions, such as winter in temperate regions or hot and dry conditions in tropical regions, many insect species enter a state of diapause, a period of dormancy associated with a reduction or arrest of physical activity, development, and reproduction. Changes in common physiological pathways underlie diapause phenotypes in different insect species. However, most transcriptomic studies of diapause have not simultaneously evaluated and compared expression patterns in different tissues. Honey bees (Apis mellifera) represent a unique model system to study the mechanisms underpinning diapause. In winter, honey bees exhibit a classic diapause phenotype, with reduced metabolic activity, increased physiological nutritional resources, and altered hormonal profiles. However, winter bees actively heat their colony by vibrating their wing muscles; thus, this tissue is not quiescent. Here, we evaluated the transcriptional profiles of flight muscle tissue and fat body tissue (involved in nutrient storage, metabolism and immune function) of winter bees. We also evaluated two behavioral phenotypes of summer bees: nurses, which exhibit high nutritional stores and low flight activity, and foragers, which exhibit low nutritional stores and high flight activity. We found winter bees and nurses have similar fat body transcriptional profiles compared to foragers, whereas winter bees and foragers have similar flight muscle transcriptional profiles compared to nurses. Additionally, differentially expressed genes were enriched in diapause-related GO terms. Thus, honey bees exhibit tissue-specific transcriptional profiles associated with diapause, laying the groundwork for future studies evaluating the mechanisms, evolution, and consequences of this tissue-specific regulation.

scholarly journals Tissue-specific transcriptional patterns underlie seasonal phenotypes in honey bees (Apis mellifera)

2021 ◽  
Author(s):  
Sean Bresnahan ◽  
Mehmet Döke ◽  
Tugrul Giray ◽  
Christina Grozinger
Keyword(s):  
Apis Mellifera ◽  
Honey Bees ◽  
Flight Muscle ◽  
Fat Body ◽  
Expression Patterns ◽  
Flight Activity ◽  
Insect Species ◽  
Tissue Specific ◽  
Transcriptional Profiles ◽  
Specific Regulation

Faced with adverse conditions, such as winter in temperate regions or hot and dry conditions in tropical regions, many insect species enter a state of diapause, a period of dormancy associated with a reduction or arrest of physical activity, development, and reproduction. Changes in common physiological pathways underlie diapause phenotypes in different insect species. However, most transcriptomic studies of diapause have not simultaneously evaluated and compared expression patterns in different tissues. Honey bees (Apis mellifera) represent a unique model system to study the mechanisms underpinning diapause. In winter, honey bees exhibit a classic diapause phenotype, with reduced metabolic activity, increased physiological nutritional resources, and altered hormonal profiles. However, winter bees actively heat their colony by vibrating their wing muscles; thus, this tissue is not quiescent. Here, we evaluated the transcriptional profiles of flight muscle tissue and fat body tissue (involved in nutrient storage, metabolism and immune function) of winter bees. We also evaluated two behavioral phenotypes of summer bees: nurses, which exhibit high nutritional stores and low flight activity, and foragers, which exhibit low nutritional stores and high flight activity. We found winter bees and nurses have similar fat body transcriptional profiles compared to foragers, whereas winter bees and foragers have similar flight muscle transcriptional profiles compared to nurses. Additionally, differentially expressed genes were enriched in diapause-related GO terms. Thus, honey bees exhibit tissue-specific transcriptional profiles associated with diapause, laying the groundwork for future studies evaluating the mechanisms, evolution, and consequences of this tissue-specific regulation.

The Effects of Temperature on Flight Muscle Potentials in Honeybees and Cuculiinid Winter Moths

1988 ◽  
Vol 135 (1) ◽  
pp. 109-117 ◽  
Author(s):  
HARALD ESCH
Keyword(s):  
Apis Mellifera ◽  
Action Potential ◽  
Rise Time ◽  
Action Potentials ◽  
Flight Muscle ◽  
Duration Of Action ◽  
Apis Mellifera Mellifera ◽  
Winter Moth ◽  
Flight Muscles ◽  
Effects Of Temperature

Amplitudes of extracellular action potentials in indirect flight muscles of honeybees and cuculiinid winter moths decline with decreasing muscle temperatures and fall suddenly to zero. Action potential durations increase with amplitude decline. Amplitudes at 11°C are only 20% of values near 30°C in workers of Apis mellifera mellifera. They fall to zero at approx. 10°C. In the cuculiinid winter moth Eupsilia devia, amplitudes at 1°C are approx. 12% of values at 27°C. They fall to zero between 0 and 1°C. The duration of action potentials in bees and cuculiinid winter moths is about 7 ms at 27°C and increases to 52 ms at 11°C in bees and to 66 ms at 1°C in moths. The ratios of action potential rise time to fall time are about 1 at 27°C for bees and moths. They decrease to 0.45 at 11°C in bees and to 0.56 at 1°C in moths. Results suggest that bees can heat flight muscles only if muscle temperatures are above 10°C, whereas cuculiinid winter moths can shiver with muscle temperatures near 0°C.

Flight muscle differentiation in nymphs of a dragonfly Anax imperator

1978 ◽  
Vol 10 (1) ◽  
pp. 167-178 ◽  
Author(s):  
Roberto Valvassori ◽  
Magda De Eguileor ◽  
Giulio Lanzavecchia
Keyword(s):  
Flight Muscle ◽  
Muscle Differentiation

Differentiation Processes of the Ocellar Retina of the Honeybee (Apis Mellifera L.)

1990 ◽  
Vol 48 (3) ◽  
pp. 430-431
Author(s):  
Maria Anna Pabst
Keyword(s):  
Apis Mellifera ◽  
Distal Part ◽  
Cell Layer ◽  
Single Layer ◽  
Photoreceptor Cells ◽  
Distal Segment ◽  
Compound Eyes ◽  
Thin Sections ◽  
Ultrastructural Studies ◽  
Adult Worker

In addition to the compound eyes, honeybees have three dorsal ocelli on the vertex of the head. Each ocellus has about 800 elongated photoreceptor cells. They are paired and the distal segment of each pair bears densely packed microvilli forming together a platelike fused rhabdom. Beneath a common cuticular lens a single layer of corneagenous cells is present.Ultrastructural studies were made of the retina of praepupae, different pupal stages and adult worker bees by thin sections and freeze-etch preparations. In praepupae the ocellar anlage consists of a conical group of epidermal cells that differentiate to photoreceptor cells, glial cells and corneagenous cells. Some photoreceptor cells are already paired and show disarrayed microvilli with circularly ordered filaments inside. In ocelli of 2-day-old pupae, when a retinogenous and a lentinogenous cell layer can be clearly distinguished, cell membranes of the distal part of two photoreceptor cells begin to interdigitate with each other and so start to form the definitive microvilli. At the beginning the microvilli often occupy the whole width of the developing rhabdom (Fig. 1).

УГРОЗЫ РАСПРОСТРАНЕНИЯ ВИРУСНЫХ ИНФЕКЦИЙ У ПЧЕЛ (Apis mellifera L.) И РОЛЬ КЛЕЩА Varroa destructor В РАЗВИТИИ ПАТОЛОГИЙ

2016 ◽  
Vol 51 (2) ◽  
pp. 156-171
Author(s):  
А.В. СПРЫГИН ◽  
◽  
Ю.Ю. БАБИН ◽  
Е.М. ХАНБЕКОВА ◽  
Л.Е. РУБЦОВА ◽  
...  
Keyword(s):  
Apis Mellifera ◽  
Varroa Destructor
Sign in / Sign up

Export Citation Format

Share Document