scholarly journals Diversity and abundance of pollinators in different winter crops at Sher-e-Bangla Agricultural University Campus, Dhaka

2022 ◽  
Vol 7 (1) ◽  
pp. 33-42
Author(s):  
MS Hossain ◽  
MM Rahman ◽  
ME Hossain ◽  
S Sarkar ◽  
K Rahman
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
Honey Bee ◽  
Honey Bees ◽  
University Campus ◽  
Oilseed Crops ◽  
Black Cumin ◽  
Insect Pollinators ◽  
Similarity Indices ◽  
Winter Crops

The study was conducted at Sher-e-Bangla Agricultural University campus to document the diversity and abundance of pollinators of five commonly grown winter crops, viz., mustard, coriander, niger, black cumin and linseed from October 2020 to February 2021. A total number of fifteen species was identified under eleven genera, nine subfamilies, nine families and seven super families. The study revealed that honey bees, halictids, nymphalids, coccinellids, butterflies and dipterans of genera Apis, Halictus, Lasioglossum, Aglais, Coccinella, Pieris, Eurema, Musca, Syrphid and Calliphora belonging to the families Apidae, Halictidae, Nymphalidae, Coccinellidae, Pieridae, Muscidae, Syrphidae and Calliphoridae, respectively were present in the field. The species diversity was high in mustard with 15 species while it was low in linseed (5 species). The honey bees, Apis sp. and sweat bees, Halictus sp. were common pollinators of all five oilseed crops, while the housefly, Musca domestica was specific to mustard. The honey bee, Apis sp. was predominant among all the insect pollinators in five oilseed crops. The Species Richness (SR), Shannon-Weaver index (H’), Community dominance and Question of similarity indices were applied to determine the diversity and abundance of pollinators. J. Biodivers. Conserv. Bioresour. Manag. 2021, 7(1): 33-42

scholarly journals Acttra SWD Bait Formulation Against Drosophila Suzukii and its Compatibility with Berry Pollination by the Honey Bee, Apis Mellifera

2021 ◽  
Vol 65 (2) ◽  
pp. 279-290
Author(s):  
Ricardo Alberto Toledo-Hernández ◽  
Mónica Pulido-Enríquez ◽  
Francisco Landeros-Pedro ◽  
Douglas Rodríguez ◽  
Daniel Sánchez
Keyword(s):  
Honey Bee ◽  
Honey Bees ◽  
Crop Protection ◽  
Spotted Wing Drosophila ◽  
Drosophila Suzukii ◽  
Control Groups ◽  
Complete Coverage ◽  
Ecological Benefits ◽  
Insect Pollinators ◽  
Insect Populations

Abstract Crop protection substances are continuously developed to prevent the decimation of non-target insect populations through insecticide use. The bait formulation Acttra SWD was created to attract the adult spotted-wing drosophila, a generalist pest of berries, and when mixed with insecticide would cause a reduction in the volume of insecticide applied, thus avoiding a complete coverage of crops and resulting in economic and ecological benefits to society. However, Acttra SWD has some compounds, including sugars and fruit odors, that might attract non-target fauna, especially insect pollinators. Therefore this study aimed (1) to investigate if Acttra SWD mixed with the recommended pesticide, i.e. spinosad (Entrust), is attractive to the honey bee, which is extensively used for berry pollination and (2) to evaluate the insecticidal activity of Acttra/Entrust in oral and contact tests on the same species. In all replicates, most foragers rejected feeders that offered Acttra/Entrust, and some switched to Acttra/Entrust-free feeders. Accordingly, mortality caused by this mixture in oral tests was low and did not differ from control, since the majority of bees did not consume the Acttra/Entrust treatment. However, mortality caused by this mixture was higher than in control groups in topical tests. Our results indicate that honey bees will not be attracted to and poisoned by crops sprayed with Acttra/Entrust, but contact with the bait would result in lethal or sub-lethal effects.

scholarly journals Mexican creeper, Antigonon leptopus Hook. and Arn : An effective bee forage plant to conserve honey bee

2020 ◽  
Vol 15 (2) ◽  
pp. 225-228
Author(s):  
P V Rami Reddy
Keyword(s):  
Ecosystem Services ◽  
Species Diversity ◽  
Honey Bee ◽  
Honey Bees ◽  
Native Species ◽  
Foraging Behaviour ◽  
Apis Cerana ◽  
Floral Resources ◽  
Urban Habitats ◽  
Forage Plant

Decline in honey bee populations has become a matter of concern and their conservation is very essential to sustain essential ecosystem services. They provide making available continuous supply of floral resources is of immense value in conserving honey bees. The effectiveness of an ornamental creeper, Antigonon leptopus Hook. & Arn as a sustainable bee forage plant was evaluated. It attracts four major native species of honey bees viz., Apis cerana, A. florea, A. dorsata and Tetragonula iridipennis. The wild little bee, A. florea was the most dominant forager followed by the Indian bee, A. cerana. The plant is amenable for easy multiplication through seeds as well as cuttings and meets both aesthetic and ecological needs. Using Antigonon, different studies related to honey bees like assessing species diversity, foraging behaviour, temperature driven shifts etc. can be carried out. Popularising perennial bee flora like Antigonon would help in conserving honey bees in both natural and urban habitats. Since Antigonon attracts all species of honey bees throughout the year, it could be utilized as a potential bioindicator of honey bee populations in a given environment.

scholarly journals Abundance and diversity of aquatic insects in two water bodies of Chittagong university campus

2015 ◽  
Vol 42 (1) ◽  
pp. 19-33
Author(s):  
Munira Nasiruddin ◽  
Mohammad Ali Azadi ◽  
Md Selim Reza
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
Aquatic Insects ◽  
Water Bodies ◽  
Species Evenness ◽  
University Campus ◽  
Abundance And Diversity

Abundance and diversity of aquatic insects was studied in two water bodies, (a pond and a lake) of Chittagong University campus during October 2009 to September 2010. A total of 4406 insects belonging to 32 genera, under 20 families and 6 orders were recorded. In both the water bodies, the representatives of the orders Hemiptera and Odonata were the most abundant groups. During the study period highest abundance of the total insects was recorded in November 2009 and the lowest in July 2010. Abundance of insects was comparatively higher in the pond habitat than in the lake. The Quotient of Similarity (QS) of the insects between the two water bodies was found to be the highest in October 2009 and lowest in July 2010. Species diversity, species richness and species evenness values of the lake were higher than that of the pond. Hydrophilus sp. and Sphaerodema sp. were the most dominant insects in the pond, while Chironomous sp. and Gerris sp. in the lake.Bangladesh J. Zool. 42(1): 19-33, 2014

scholarly journals Cadmium and Selenate Exposure Affects the Honey Bee Microbiome and Metabolome, and Bee-Associated Bacteria Show Potential for Bioaccumulation

2019 ◽  
Vol 85 (21) ◽  
Author(s):  
Jason A. Rothman ◽  
Laura Leger ◽  
Jay S. Kirkwood ◽  
Quinn S. McFrederick
Keyword(s):  
Honey Bee ◽  
Honey Bees ◽  
16S Rrna Gene Sequencing ◽  
Chemical Exposure ◽  
Rrna Gene ◽  
Associated Bacteria ◽  
Insect Pollinators ◽  
Rrna Gene Sequencing ◽  
The Impact

ABSTRACT Honey bees are important insect pollinators used heavily in agriculture and can be found in diverse environments. Bees may encounter toxicants such as cadmium and selenate by foraging on plants growing in contaminated areas, which can result in negative health effects. Honey bees are known to have a simple and consistent microbiome that conveys many benefits to the host, and toxicant exposure may impact this symbiotic microbial community. We used 16S rRNA gene sequencing to assay the effects that sublethal cadmium and selenate treatments had over 7 days and found that both treatments significantly but subtly altered the composition of the bee microbiome. Next, we exposed bees to cadmium and selenate and then used untargeted liquid chromatography-mass spectrometry (LC-MS) metabolomics to show that chemical exposure changed the bees’ metabolite profiles and that compounds which may be involved in detoxification, proteolysis, and lipolysis were more abundant in treatments. Finally, we exposed several strains of bee-associated bacteria in liquid culture and found that each strain removed cadmium from its medium but that only Lactobacillus Firm-5 microbes assimilated selenate, indicating the possibility that these microbes may reduce the metal and metalloid burden on their host. Overall, our report shows that metal and metalloid exposure can affect the honey bee microbiome and metabolome and that strains of bee-associated bacteria can bioaccumulate these toxicants. IMPORTANCE Bees are important insect pollinators that may encounter environmental pollution when foraging upon plants grown in contaminated areas. Despite the pervasiveness of pollution, little is known about the effects of these toxicants on honey bee metabolism and their symbiotic microbiomes. Here, we investigated the impact of selenate and cadmium exposure on the gut microbiome and metabolome of honey bees. We found that exposure to these chemicals subtly altered the overall composition of the bees’ microbiome and metabolome and that exposure to toxicants may negatively impact both host and microbe. As the microbiome of animals can reduce mortality upon metal or metalloid challenge, we grew bee-associated bacteria in media spiked with selenate or cadmium. We show that some bacteria can remove these toxicants from their media in vitro and suggest that bacteria may reduce metal burden in their hosts.

scholarly journals Odonate abundance and diversity in four selective spots of Chittagong University campus

2018 ◽  
Vol 4 (1) ◽  
pp. 55-62
Author(s):  
M Nasiruddin ◽  
A Barua
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
Seasonal Fluctuation ◽  
Species Evenness ◽  
University Campus ◽  
Ecological Conditions ◽  
The Family ◽  
Abundance And Diversity

The abundance and diversity of odonate fauna were studied in four selective spots of Chittagong University Campus, Chittagong, Bangladesh from August’2016 to July’2017. A total of 928 individuals of odonates under three families was collected during the study period from the four sampling sites. Out of 25 species identified one belonged to the family Gomphidae, 13 belonged to family Libellulidae and 11 belonged to family Coenagriidae. The abundance of odonate species was highest in July’17 (13.04%) and was lowest in December’16 (4.96%). Spot 2 was a hotspot for odonates as highest number (370) was collected from this spot. A total of 196, 188 and 174 individuals were collected from Spot 4, Spot 3 and Spot 1, respectively. The members of Libellulidae (472) were dominant followed by Coenagriidae (406) and lastly Gomphidae (50). Highest species richness (SR), species diversity (H′) and species evenness (J′) values were observed in the months of May’17 (1.56±0.08), May’17 (1.29±0.08) and December’16 (0.96±0.03), respectively. But lowest such values were observed in December’16 (0.96±0.05), November’16 (0.90±0.02) and May’17 (0.81±0.05), respectively. Amongst the spots, highest SR, H′ and J′, values were observed in Spot 4 (1.40±0.10), Spot 2 (1.22±0.05) and Spot 1 (0.93±0.02), respectively, whereas, lowest such values were observed in Spot 1 (1.02±0.08), Spot 1 (1.01±0.04) and Spot 4 (0.82±0.02), respectively. Ecological conditions and seasonal fluctuation had great impact on the abundance and diversity of odonates.J. Biodivers. Conserv. Bioresour. Manag. 2018, 4(1): 55-62

scholarly journals Diversity and abundance of parasitic wasps (Insecta: Hymenoptera) of Bangladesh

2020 ◽  
Vol 5 (2) ◽  
pp. 63-68
Author(s):  
S Mazumdar ◽  
MI Miah
Keyword(s):  
Species Richness ◽  
University Campus ◽  
Parasitic Wasps ◽  
Parasitic Hymenoptera ◽  
Similarity Indices ◽  
Malaise Traps

A survey was conducted to study the diversity and population of parasitic Hymenoptera by using Malaise traps, from March 2014 to February 2015 in Chittagong University and Rajshahi University Campus. A total number of 173 genera was identified under 53 subfamilies, 23 families and 7 super families. Among the super families, the highest percentage of species individuals (59%) in Chalcidoidea, and of genera (55%) in Ichneumonoidea were recorded. The Species Richness (SR), H or H’, Hmax, Evenness, Community dominance and Question of similarity indices were applied to determine the diversity and abundance of parasitic hymenoptera. J. Biodivers. Conserv. Bioresour. Manag. 2019, 5(2): 63-68

scholarly journals INSECT POLLINATORS DIVERSITY IN AVOCADO ORCHARD DURING FLOWERING PERIOD IN LUSHOTO DISTRICT TANZANIA

2020 ◽  
Vol 7 (12) ◽  
pp. 20-24
Author(s):  
Christopher L Materu
Keyword(s):  
Species Diversity ◽  
Honey Bees ◽  
Stingless Bee ◽  
Insect Species ◽  
Population Estimates ◽  
Insect Pollinator ◽  
Flowering Season ◽  
Population Comparison ◽  
Insect Pollinators ◽  
Sweep Net

Insect pollinator diversity is key to ensuring adequate fruit yields within avocado orchards. Bee and non-bee insect species in avocado growing areas worldwide, has been considered as potential pollinators. Despite of this information in Tanzania there has been little research into which pollinator insect species diversity visit avocado flowers during flowering season. The study was conducted at Jaegetal avocado orchard from 450 trees of Hass variety planted at spacing of 10m x 10m. Sample size was 10 trees were used to generate pollinator’s population estimates. The orchard is located at S04˚47ʹ41.7ʹʹ and E038˚13ʹ11.8ʹʹ. Sweep net, forceps and aspirator were used to estimate pollinator’s diversity during avocado production season 2018/19. The results showed a total of 115 individuals were sampled and honey bees were more abundant flower visitors representing 60% of all insects recorded. The second species observed included the stingless bee representing (26%), followed by tachnid fly (6%) and hoverfly (6%). The least species in abundance was ants (1%) and wasps (1%). Mean population comparison there was significant differences P< 0.005.Understanding pollinators species diversity interaction between honey bee and other flower visitor’s abundances within and outside orchards could assist in improving pollination recommendations in avocado growing areas.

scholarly journals Influence of Honey Bees on Pumpkin Yields in Illinois

HortScience ◽  
2004 ◽  
Vol 39 (4) ◽  
pp. 866A-866
Author(s):  
S. Alan Walters* ◽  
Bradley H. Taylor
Keyword(s):  
Honey Bee ◽  
Honey Bees ◽  
Fruit Set ◽  
Fruit Size ◽  
Weight Basis ◽  
Growing Seasons ◽  
Bee Colony ◽  
Insect Pollinators ◽  
Potential Benefits ◽  
Bee Colonies

Most small pumpkin growers in Illinois have traditionally relied upon natural insect pollinators to achieve fruit set and development. Many growers fail to understand the importance of pollination and are not aware of the potential benefits of using honey bee colonies to improve pollination and subsequent fruit set of pumpkin. Therefore, a study was conducted over the 2000 and 2001 growing seasons to measure the effectiveness of honey bee colonies on jack-o-lantern pumpkin production. Yields (kg·ha-1) of several cultivars (e.g., `Appalachian' and `Howden') almost doubled when honey bee colonies were present during flowering. Pumpkin weights with the inclusion of honey bees averaged 31,547 kg·ha-1 compared to 22,353 kg·ha-1 for those without honey bees. However, the number of pumpkins per ha was not as drastically influenced by the addition of honey bees; total pumpkin fruits per ha averaged 1,896 with honey bees as compared to 1,704 without honey bees. These results indicate that there were sufficient natural pollinators to induce pumpkin fruit set under field conditions during the study, but fruit size can be significantly increased with the addition of a strong honey bee colony during flowering. Since pumpkins are generally sold on a weight basis, growers should realize greater revenues with the inclusion of honey bee colonies in pumpkin fields.

scholarly journals Beekeeping Potential, Richness, and Distribution of Plant Species Foraged by Stinging Honey Bee (Apis Mellifera L.) in West Kilimanjaro Tanzania Forest Service Agency (TFS) Plantation.

2021 ◽  
Vol 3 (1) ◽  
pp. 33-54
Author(s):  
Masawanga Yahya Ismail ◽  
Joel Felichesmi Tarimo ◽  
Canisius John Kayombo
Keyword(s):  
Apis Mellifera ◽  
Species Diversity ◽  
Honey Bee ◽  
Plant Species ◽  
Honey Bees ◽  
Woody Plants ◽  
Diversity Training ◽  
Diversity Index ◽  
Forest Service ◽  
Service Agency

An assessment of beekeeping potential, richness, and distribution of plant species foraged by stinging honey bee Apis mellifera L. in West Kilimanjaro Tanzania Forest Service Agency (TFS) Plantation area was conducted in 2020. A total of 40, 20 m x 20 m plots were set on the 5 natural vegetation remnants within the plantation forest ranges of Sanya juu, Lemosho, Hill wood, Wasendo, and Londrosi at an interval of 100 m. Within the 20 m x 20 m, 1 m x 1 m nested plots were established to assess herbs, sedge, grasses, and seedlings, while 2 m x 5 m were established to determine shrubs. Agriculture crops grown by the bordering villagers were identified and evaluated for the bee forage potential. Plant species richness (S) was determined from the total number of plant species identified from every site using the Shannon Weiner Diversity Index (H’). Plant species distribution was determined grounded on the frequency (F) and evenness (E) were determined. The sites were revealed to have high plant species diversity foraged by stinging honey bees. A total of 204 plant species belonging to 76 families and 178 genera were identified.   The calculates H’ of 2.37 for non-wood plants and 3.05 for wood plants implied high plant diversity. The most distributed plant species had a relative frequency (RF) of 6.250 ± 3.0303, while the rest had an RF < 3.0303. The disappearance of one species does not cause any significant effect on bees, as they can go for another species in the area. 92% of non-woody plants and 94% of the identified woody plants were known to be foraged by stinging honey bees. The evenness (E) of 0.7484 for non-wood plants and 0.795 implied that the plants in all categorize were not evenly distributed. West Kilimanjaro Forest Plantation (WKFP) natural forest patches are potential for honey beekeeping. Stinging honey bee fodder plants should be planted, regular visits to the project sites should be exercised to protect honey theft, spot clearing to give a room for naturally germinated seedlings covered by climbers. Further study should be done on the biological species diversity, training to beekeeping staff, and plan for regular inspection of the honey bee colony strength will help to reveal any challenges facing the venture including diseases and hives strengths and weakness.

scholarly journals Entomofauna of four spots of Chittagong University campus and their relative abundance and diversity

2018 ◽  
Vol 3 (1) ◽  
pp. 55-64
Author(s):  
M Nasiruddin ◽  
FA Shiuli
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
Relative Abundance ◽  
Seasonal Fluctuation ◽  
Forest Area ◽  
Species Evenness ◽  
University Campus ◽  
Hilly Area ◽  
Abundance And Diversity

Relative abundance and diversity of insects were studied in the four spots of Chittagong University Campus, from October 2015 to September 2016. The studied insect orders were- Odonata, Orthoptera, Coleoptera, Hymenoptera and Lepidoptera. Two families under Odonata, four under Orthoptera, five under Coleoptera, three families under Hymenoptera and eight under Lepidoptera were examined from the four study spots. Among these, sixteen species of Odonata, eight species of Orthoptera, Coleoptera and Hymenoptera in each and 32 Lepidoptera species were identified. Highest numbers of insects (276) was collected in April'16 and December'15 whereas lowest numbers of insects (201) were collected in October'15. The highest abundance (906) of insects was found in Spot 3 (Hilly area), medium (785) in Spot 1 (Pond area) and lowest (642) and (648) in Spot 2 (Garden area) and Spot 4 (Artificial forest area), respectively. Lepidoptera (1217) was the most dominant order in the four studied spots followed by Odonata (636), Coleoptera (395), Hymenoptera (381) and Orthoptera (352). The average highest species richness, species diversity and species evenness were observed in October'15 (2.40 ± 0.11), August'16 (2.22 ± 0.03) and August'16 (0.96 ± 0.01), respectively and lowest in April'16 (2.18 ± 0.04), April'16 (1.98 ± 0.07) and April'16 (0.85 ± 0.03), respectively. During the study period, the highest species richness was observed in Spot 2 and Spot 4 (2.32 ± 0.03) and lowest in Spot 3 (2.13 ± 0.02); the highest species diversity was observed in Spot 3 (2.16 ± 0.02) and lowest in Spot 1 and Spot 2 (2.04 ± 0.03); and the highest species evenness was observed in Spot 3 (0.93 ± 0.01) and lowest in Spot 1 and Spot 2 (0.88 ± 0.01). Abundance and diversity of insects were dependent on seasonal fluctuation, and also on ecological and environmental conditions.J. Biodivers. Conserv. Bioresour. Manag. 2017, 3(1): 55-64

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