scholarly journals Determination of Acute Lethal Doses of Acetamiprid and Cypermethrin for the Native Bee <i>Apis mellifera</i> (Hymenoptera: Apidae) in Cameroon

2020 ◽  
Vol 10 (07) ◽  
pp. 404-417
Author(s):  
Sanda Mazi ◽  
Toua Vroumsia ◽  
Marie-Noel Yahangar ◽  
Malloum Malla ◽  
Dawai Zroumba
Sociobiology ◽  
2015 ◽  
Vol 62 (4) ◽  
Author(s):  
Leticia Mariano da Costa ◽  
Tatiane Caroline Grella ◽  
Rodrigo Avelaira Barbosa ◽  
Osmar Malaspina ◽  
Roberta Cornélio Ferreira Nocelli
Keyword(s):  

2016 ◽  
Vol 124 ◽  
pp. 364-367 ◽  
Author(s):  
Ummihan Taskoparan Yilmaz ◽  
Tugba Melekogullari ◽  
Aysel Kekillioglu ◽  
Demet Uzun

2015 ◽  
Vol 59 (2) ◽  
pp. 127-133 ◽  
Author(s):  
Krystyna Czekońska ◽  
Bożena Chuda-Mickiewicz

Abstract The effectiveness of two methods of collecting semen from honeybee Apis mellifera drones was compared, and the reasons for problems with ejaculating semen were analysed. Among 275 drones, 100 were stimulated to release semen using a manual method, 100 with the use of chloroform, and from 75 drones the reproductive organs were dissected for analysis and evaluation. It was found that the principal causes of problems that drones had with ejaculating their semen were anatomical changes or a delay in the development of the mucus glands. It was also found that the method employing chloroform was less efficient in the first phase of eversion of the endophallus, compared with the manual method. The method with the use of chloroform allows the determination of the proportion of drones, which do not evert the endophallus because of poor or delayed development of mucus glands, as well as the proportion of drones which evert the organ, but do not ejaculate semen because of the absence of semen in the seminal vesicles.


2019 ◽  
Vol 20 (2) ◽  
pp. 133
Author(s):  
Wisje Lusia Toar ◽  
Laurentius Rumokoy ◽  
Ivonne Maria Untu ◽  
Geertruida Assa

This research was conducted to evaluate the influence of insect crude thoraxial antigen-G (CTA) extracted from Apis mellifera L. (Hymenoptera: Apidae) to enhance goat’s serum immunoglobulin level. The first part of this study was the determination of insect CTA proportion level. The insects were collected from four different places: Tomohon, Minahasa, North-Minahasa and Manado areas. The second part of the study was the application of A. mellifera CTA substance on serum immunoglobulin level classification. In this part, twelve young goats handled with traditional maintenance.  The animals experiment were divided in two groups: control group and the other treated with 100 µg CTA extract. The proportion of serum immunoglobulins level of goats was detected at 14th days after immunization with insects CTA extract, and compared with the animals immunoglobulin levels at the starting day of treatment.  The data of CTA extract proportion level of the insects collected were subjected to statistically analysis using the general linear model (GLM) procedure of SPSS 22. Concerning the classification level of the animal treated with CTA was statistically analyzed according to Mann-Whitney test. The results showed that the proportion level of thoraxial antigens-G of A. mellifera from all areas observed were not significant different (P>0.05). This crude thoraxial antigens-G of this insect were able to increase serum antibody level of the experiment animal after 14 days of immunization. The immunoglobulin level qualification of animals in treated group were significant higher (P<0.05) than in control group. We concluded that the CTA extract of the Apis mellifera could be empowered to improve the young goat immunity against the pathogenic microbes in their environment. 


1960 ◽  
Vol 53 (6) ◽  
pp. 841-843 ◽  
Author(s):  
A. F. Novak ◽  
M. S. Blum ◽  
S. Taber ◽  
J. A. Liuzzo

1996 ◽  
Vol 128 (5) ◽  
pp. 957-958 ◽  
Author(s):  
Troy L. Whidden

Lowbush blueberry (Vaccinium angustifolium Ait., V. myrtilloides Michx.) growers often use colonies of the European honey bee (Apis mellifera L.) to supplement native bee populations for pollination. Native bee fauna is thought to be insufficient in number and too unpredictable, in terms of numbers, from year to year to be relied on for adequate crop pollination (Kevan and LaBerge 1978; Mackenzie and Winston 1984; Mohr and Kevan 1987; Kevan 1988; Eck 1988).


2018 ◽  
Vol 9 (8) ◽  
pp. 206-210
Author(s):  
Faji Mulisa ◽  
Abebe Alemayehu ◽  
Mijena Diribi ◽  
Begna Fekadu ◽  
Tarekegn Alayu

2021 ◽  
Author(s):  
Amy C Geffre ◽  
Dillon Travis ◽  
Joshua Kohn ◽  
James Nieh

Bees provide critical pollination services but are threatened by multiple stressors, including viral pathogens. Most studies of pollinator health focus on managed honey bees (Apis mellifera Linnaeus) (MHB) or native bee species, but a third player, the feral honey bee (FHB), requires further study. Spillover and spillback of viral pathogens between these managed, feral, and native bees is generating increasing interest. In this case study, we provide evidence suggesting that FHB colonies play an important role in viral pathogen dynamics of southern California pollinator communities because they act as reservoirs, of viral pathogens such as acute bee paralysis virus (ABPV), black queen cell virus (BQCV), and deformed wing virus (DWV). Surprisingly, even though FHB are not treated for diseases or parasites, they harbor similar pathogen loads to MHB, which are usually highly treated, suggesting the need for future studies to determine if FHB resist or are more resilient to viruses.


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