Importance of Non-Native Honeybees (Apis mellifera) as Flower Visitors to the Hawaiian Tree ‘Ōhi‘a Lehua (Metrosideros polymorpha) Across an Elevation Gradient1

2019 ◽  
Vol 73 (3) ◽  
pp. 345 ◽  
Author(s):  
Camila A. Cortina ◽  
Clare E. Aslan ◽  
Stacey J. Litson
Keyword(s):  
Apis Mellifera ◽  
Metrosideros Polymorpha ◽  
Flower Visitors

scholarly journals COMPOSITION AND FREQUENCY OF FLOWER VISITORS IN SOME VARIETIES OF MELON UNDER DIFFERENT CROP CONDITIONS1

2021 ◽  
Vol 34 (4) ◽  
pp. 976-984
Author(s):  
EVA MONICA SARMENTO DA SILVA ◽  
MÁRCIA DE FÁTIMA RIBEIRO ◽  
LÚCIA HELENA PIEDADE KIILL ◽  
MÁRCIA DE SOUSA COELHO ◽  
MARA POLINE DA SILVA
Keyword(s):  
Apis Mellifera ◽  
Organic Farming ◽  
Honey Bee ◽  
Cucumis Melo ◽  
Dry Season ◽  
Flower Visitors ◽  
Main Production ◽  
Brazilian Northeast ◽  
And Behavior ◽  
Dry And Rainy Seasons

ABSTRACT Previous investigations showed that diverse varieties of melon may have different attractiveness for bees. Therefore, the objective of this study was to evaluate the composition, frequency and behavior of flower visitors of some melon (Cucumis melo) cultivars (Amarelo, Pele de Sapo, Cantaloupe, Gália) in different conditions (conventional and organic farming, dry and rainy seasons, with and without mulching and introduction or not of honey bee hives) in the main production poles in the Brazilian Northeast (Petrolina-PE/Juazeiro-BA, Pacajus-CE and Mossoro-RN). Observations and collections of flower visitors occurred from 5p.m. to 6p.m, in non-consecutive days. We recorded 12 species of insects, mostly bees. The most frequent was Apis mellifera (99.68%), but other species appeared sporadically (less than 0.5%): Xylocopa grisescens, Trigona spinipes, Plebeia sp., Melipona mandacaia, Frieseomelitta doedereleini, Halicitidae. Apis mellifera was present in all studied cultivars and sites. Xylocopa grisescens appeared in two poles, but not in Pacajus-CE, Amarelo cultivar. In addition, Trigona spinipes, although present in the three poles, was not recorded on Pele de Sapo. The Amarelo cultivar, under organic farming, without the use of mulching, and presence of honey bee hives, in the Petrolina-PE/Juazeiro-BA pole, in the dry season, was the combination of factors showing the largest number of Apis mellifera as the main visitor of melon flowers.

scholarly journals Abundance of eggplant (Solanum melongena L.) flower visitors in Lalitpur, Nepal

2018 ◽  
pp. 101-104
Author(s):  
R. P. Mainali ◽  
R. B. Thapa ◽  
Y. P. Giri
Keyword(s):  
Apis Mellifera ◽  
Field Experiment ◽  
Rainy Season ◽  
Solanum Melongena ◽  
Animal Science ◽  
Flower Visitor ◽  
Flower Visitors ◽  
Lepidopteran Insects ◽  
Sweep Net ◽  
Growing Crop

 In order to determine the abundance of insect flower visitors in growing crop of eggplant, Solanum melongena L., a field experiment was conducted in Khumaltar, Laliptur during summer-rainy season of 2012 to 2014. The insect flower visitors were monitored weekly by end-to-end walk method using sweep net at different time of the day, viz. 7-8 am, 12-1 pm and 4-5 pm. Then collected insects were identified using the reference insects/books available in Insect Museum of Entomology Division, NARC, Khumaltar. This study revealed that Hymenopteran were found to be the most dominant (90.75%) flower visitors; followed by Lepidopteran insects (9.25%). Among the identified insect species, Bombus sp. (60.22%) was the most frequently collected bees as flower visitor of eggplant followed by Apis mellifera L., A. cerana F., Syntomis sp. in all three years of field study. Other flower visitors, such as Anthophora sp., Andrena sp. and Halictus sp. were also found visiting the eggplant flower but their occurrence was minimal. Significantly (p<0.05) higher number of insects visited the eggplant flowers at 7-8 am (58.48%) followed by those visiting during 4-5 pm (28.97%) and 12-1 pm (12.54%), respectively. For adequate pollination and healthy production of eggplant, conservation and utilization of flower visitors and their role in pollination is imperative. Journal of the Institute of Agriculture and Animal Science. Vol. 33-34, 2015, page: 101-104

scholarly journals Pollination ecology of the tropical weed Triumfetta semitriloba Jacq. (Tiliaceae), in the South-eastern Brazil

1998 ◽  
Vol 58 (3) ◽  
pp. 383-392 ◽  
Author(s):  
ROSANE G. COLLEVATTI ◽  
LÚCIO A. O. CAMPOS ◽  
ALEXANDRE F. DA SILVA
Keyword(s):  
Steady State ◽  
Apis Mellifera ◽  
Pollination Ecology ◽  
Pollen Load ◽  
The South ◽  
Flower Visitors ◽  
South Eastern ◽  
Flowering Season ◽  
Eastern Brazil ◽  
Flower Phenology

This work aimed to study the pollination ecology of the tropical weed Triumfetta semitriloba Jacq. (Tiliaceae), in Viçosa, South-eastern Brazil, during the flowering season of 1993 and 1994. Two patches located in pasture (P1 and P2) and one patch in a forest trail (P3) were chosen and ten plants on each patch were sorted. The number of opened flowers were counted during one day, in each flowering month and patch. All observed flower visitors were identified and their behavior while visiting flowers was recorded. Frequency of visits to flowered branches was obtained and some pollinator individuals were captured for analysis of pollen load. Flowers are conspicuously yellow and actinomorphic, with five nectaries around the ovary base, and opened sequentially in the afternoon. Flower phenology followed a modified steady-state Gentry's pattern. The number of opened flowers was higher in P2, but differences between months were not homogeneous between patches. Considering behaviour when collecting pollen or nectar, which permitted impregnation of stigma with pollen, visiting frequency and percent of T. semitriloba pollen on pollen load (100% for all of them, except for Augochlorella michaelis which was 81%) the following species were the mainly pollinators: Augochloropsis cupreola, Augochlorella michaelis, Cressomiella aff. sussurans, Cressomiella sussurans, Cressomiella sp., Pseudocentron paulistana, Ceratinula sp1, Ceratinula sp2 and Ceratinula sp3, Melissodes sexcincta, Apis mellifera, Plebeia cf. nigriceps, Plebeia droryana. Frequency of pollinators visitation was not different between patches and not uniform during anthesis. There was a higher pollinator activity between 15:00 and 17:00 hr.

scholarly journals Foraging Behavior and Pollen Transport by Flower Visitors of the Madeira Island Endemic Echium candicans

Insects ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 488
Author(s):  
Fabiana Esposito ◽  
Ricardo Costa ◽  
Mário Boieiro
Keyword(s):  
Apis Mellifera ◽  
Foraging Behavior ◽  
Bombus Terrestris ◽  
High Mobility ◽  
Endemic Plant ◽  
Flower Visitor ◽  
Flower Visitors ◽  
Island Endemic ◽  
Pollen Loads ◽  
Pollen Transport

The study of flower visitor behavior and pollen transport dynamics within and between plants can be of great importance, especially for threatened or rare plant species. In this work, we aim to assess the flower visitor assemblage of the Madeiran endemic Echium candicans and evaluate the performance of the most common visitors through the analysis of their foraging behavior and pollen loads. The flower visitor assemblage of E. candicans is diverse, including several insect groups and the endemic lizard Teira dugesii, but bees are the most common visitors. In general, large bees (Amegilla quadrifasciata, Apis mellifera, and Bombus spp.) had the highest average visitation rates (>18 flowers/min) and their pollen loads had higher percentages of homospecific pollen (>66%) when compared with butterflies and hoverflies. The honeybee (Apis mellifera) and two bumblebees (Bombus terrestris and B. ruderatus) were the most efficient flower visitors of E. candicans, but their foraging behavior seems to favor geitonogamy. Other visitors, such as butterflies and the small bee Lasioglossum wollastoni, may have a complementary role to the honeybee and bumblebee species, as their high mobility is associated with fewer flower visits on each plant and may promote xenogamy. Two non-native bees (A. mellifera and B. ruderatus) are important flower visitors of E. candicans and may contribute mostly to self-pollination rendering the endemic plant more vulnerable to inbreeding effects.

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).

Benefits of performing learning flights in honeybees, Apis mellifera

2003 ◽  
Author(s):  
Cynthia A. Wei ◽  
Fred C. Dyer
Keyword(s):  
Apis Mellifera

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
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