THE LONGITUDINAL ORIENTATION OF LARVAL HONEY BEES (APIS MELLIFERA) IN THEIR CELLS

1963 ◽  
Vol 41 (5) ◽  
pp. 717-723 ◽  
Author(s):  
S. C. Jay
Keyword(s):  
Apis Mellifera ◽  
Honey Bees ◽  
Cell Length ◽  
Natural Conditions ◽  
Gelatin Capsules ◽  
Correct Orientation ◽  
Longitudinal Orientation ◽  
Major Factors ◽  
End Wall ◽  
In Cells

Disorientated larvae of the three castes of honey bees rarely occur under natural conditions; correct orientation is essential for survival in the worker and drone castes. The distinctive cells of the three castes were simulated by gelatin capsules with their end walls modified to give combinations of shape, ventilation, and texture. The effect of cell length and gravity was also tested. The major factors controlling larval orientation in cells are: (a) worker: primarily texture of cell end walls (i.e. basal end smooth, capping end rough) and secondarily shape of cell end walls (i.e. basal end round, capping end flat), (b) drone: texture of cell end walls, (c) queen: gravity and possibly the rough texture (i.e. the cocoon) of the lower end wall. Larvae defecate with their anterior ends touching the rough-textured end walls.

scholarly journals Effects of rearing method on some morphological and reproductive organ characteristics of queen honey bees (Apis mellifera L.)

2021 ◽  
Vol 77 (02) ◽  
pp. 6496-2021
Author(s):  
GONCA OZMEN OZBAKIR
Keyword(s):  
Apis Mellifera ◽  
Honey Bees ◽  
Morphological Characteristics ◽  
Reproductive Organ ◽  
Cell Length ◽  
Head Width ◽  
Reproductive Characteristics ◽  
Rearing Method ◽  
Sustainable Future ◽  
Significant Difference

This study aimed to investigate some of the morphological and reproductive characteristics of the queen honey bees rearing from emergency queen cells and larvae grafting method. The weight at the emergence of queens reared from one-day larvae was found to be higher than other groups (P <0.05). Morphological characteristics of queens according to rearing method showed significant differences of head width, forewing length and forewing width (P <0.05), whereas other morphological characteristics were found similar in different queen groups. No significant difference was observed between the groups in terms of cell length and width (P > 0.05). Wet ovary weights of the queens were weighed at 45, 51, and 49 mg rearing from emergency cells, 1-day-old and 2-day-old larvae, respectively. The number of ovarioles and spermatheca diameter of queens were found to be 268 and 1.14 mm, 296 and 1.21 mm, 285, and 1.16 mm rearing from emergency cells, 1-day-old and 2-day-old larvae, respectively (P <0.05). Consequently, the morphological and reproductive characteristics of queens reared from one-day-old larvae have higher values. According to the results of the study, although some morphological and reproductive features of local queens have low values, their importance should not be ignored in the sustainable future of beekeeping.

scholarly journals Efficacy of an Eco-Friendly Bloom Thinning Formulation on Mango Trees and Its Olfactory Effect on an Insect Pollinator, Apis mellifera

Horticulturae ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 62
Author(s):  
Tae-Kwon Son ◽  
Md Munir Mostafiz ◽  
Hwal-Su Hwang ◽  
Nguyen Truong Thạnh ◽  
Kyeong-Yeoll Lee
Keyword(s):  
Apis Mellifera ◽  
Honey Bees ◽  
Fruit Size ◽  
Fruit Trees ◽  
Fruit Weight ◽  
Behavioral Changes ◽  
Control Treatment ◽  
Environmental Concerns ◽  
Olfactory Behavior ◽  
Insect Pollinator

In various orchard fruit trees, thinning of blossoms and fruits is important to increase fruit size and quality and to promote a new bloom in the following season. Several chemical thinning agents are currently commercially available, but they are inconsistent and produce side effects in crop plants and insect pollinators. Because of environmental concerns, developing alternative eco-friendly bloom thinning agents is necessary. We developed an eco-friendly bloom thinning formulation (BTF) using minerals and extracts of various medicinal plants. Our BTF spray (0.1%, <i>w/v</i>) decreased the number of fruits per tree (46.5%) and fruit yield per tree (81.5%) but increased the fruit weight (196.8%) compared with the control treatment; the spray induced a small number of larger mango fruits in the treated trees. We also investigated the effect of BTF on the olfactory behavior of <i>Apis mellifera</i> L. (Hymenoptera, Apidae), a major insect pollinator. We analyzed the behavioral changes of adult workers at two different concentrations (0.1% and 1%) of nine different BTF spray components using a Y-tube olfactometer. The behavioral responses of honey bees to nine BTF components showed significant differences. However, honey bees showed no clear attraction or repellent behavior towards the tested BTF components. Our results suggest that the newly developed eco-friendly BTF is practically applicable in mango orchards without interrupting honey bee behavior.

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