Juvenile hormone induction of ‘queenliness’ on female honey bee (Apis mellifera L.) larvae reared on worker jelly and on stored royal jelly

1984 ◽  
Vol 78 (1) ◽  
pp. 109-117 ◽  
Author(s):  
Moshe Asencot ◽  
Yaacov Lensky
Keyword(s):  
Apis Mellifera ◽  
Juvenile Hormone ◽  
Honey Bee ◽  
Royal Jelly

scholarly journals Transcriptional Control of Honey Bee (Apis mellifera) Major Royal Jelly Proteins by 20-Hydroxyecdysone

Insects ◽  
2018 ◽  
Vol 9 (3) ◽  
pp. 122 ◽  
Author(s):  
Paul Winkler ◽  
Frank Sieg ◽  
Anja Buttstedt
Keyword(s):  
Gene Expression ◽  
Apis Mellifera ◽  
Juvenile Hormone ◽  
Honey Bee ◽  
Honey Bees ◽  
Transcriptional Control ◽  
Royal Jelly ◽  
Adult Worker ◽  
Gene Expression Dynamics

One of the first tasks of worker honey bees (Apis mellifera) during their lifetime is to feed the larval offspring. In brief, young workers (nurse bees) secrete a special food jelly that contains a large amount of unique major royal jelly proteins (MRJPs). The regulation of mrjp gene expression is not well understood, but the large upregulation in well-fed nurse bees suggests a tight repression until, or a massive induction upon, hatching of the adult worker bees. The lipoprotein vitellogenin, the synthesis of which is regulated by the two systemic hormones 20-hydroxyecdysone and juvenile hormone, is thought to be a precursor for the production of MRJPs. Thus, the regulation of mrjp expression by the said systemic hormones is likely. This study focusses on the role of 20-hydroxyecdysone by elucidating its effect on mrjp gene expression dynamics. Specifically, we tested whether 20-hydroxyecdysone displayed differential effects on various mrjps. We found that the expression of the mrjps (mrjp1–3) that were finally secreted in large amounts into the food jelly, in particular, were down regulated by 20-hydroxyecdysone treatment, with mrjp3 showing the highest repression value.

Precocene II is no Anti-Juvenile Hormone in the Honey Bee, Apis mellifera

1979 ◽  
Vol 34 (12) ◽  
pp. 1261-1263 ◽  
Author(s):  
Heinz Rembold ◽  
Christian Czoppelt ◽  
Gireesh K. Sharma
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Apis Mellifera ◽  
Juvenile Hormone ◽  
Honey Bee ◽  
Royal Jelly ◽  
Treatment Control ◽  
Larval Weight ◽  
Precocene Ii

The effect of precocene II on development of the honey bee, Apis mellifera, was studied in vitro. One- to two-day-old worker larvae (body weight 0.5 - 1.0 mg) were removed from the colonies, reared on royal jelly-yeast extract, and after 24 h were topically applied with different amounts (5 - 75 μg/larva) of precocene II. Toxicity was observed only with precocene doses of 50 μg/larva and more. The larval weight-gains declined with the increase of doses. The acetone-treated control had better survival and weight-gain as compared to the no-treatment control. The larval and pu­pal periods in the treated larvae remained unchanged as compared to the controls. The possibility of precocene acting as an antifeedant is discussed.

THE ROLE OF NUTRITION AND TEMPERATURE IN THE OVARIAN DEVELOPMENT OF THE WORKER HONEY BEE (APIS MELLIFERA)

1998 ◽  
Vol 130 (6) ◽  
pp. 883-891 ◽  
Author(s):  
Huarong Lin ◽  
Mark L. Winston
Keyword(s):  
Apis Mellifera ◽  
Honey Bee ◽  
Nutritive Value ◽  
Royal Jelly ◽  
Ovarian Development ◽  
Egg Laying ◽  
Brood Chamber ◽  
Laying Workers

AbstractQueenless, caged, newly emerged worker bees (Apis mellifera L.) were fed honey, 22 and 40% pollen in honey, and 22 and 40% royal jelly in honey for 14 days. Workers fed royal jelly, pollen, and honey had large, medium, and small ovaries, respectively. Royal jelly had higher nutritive value for workers’ ovarian development than did pollen, possibly because royal jelly is predigested by nurse bees and easily used by adult and larval bees. These results suggest that nurse bees could mediate workers’ ovarian development in colonies via trophallactic exchange of royal jelly. Six levels of royal jelly in honey, 0, 20, 40, 60, 80, and 100% (royal jelly without honey), were tested for their effects on workers’ ovarian development and mortality for 10 days. High levels of royal jelly increased ovarian development, but also increased worker mortality. All caged bees treated with 100% royal jelly died within 3 days. When workers were incubated at 20, 27, and 34 °C for 10 days, only bees at 34 °C developed ovaries. These findings suggest that nurse bees functioning as units which digest pollen and produce royal jelly may feed some potentially egg-laying workers in a brood chamber with royal jelly when a queen is lost in a colony. Feeding workers a diet of 50% royal jelly in honey and incubating at 34 °C for 10 days is recommended for tests of ovarian development.

scholarly journals Effect of Different Substrates on the Acceptance of Grafted Larvae in Commercial Honey Bee (Apis Mellifera) Queen Rearing

2017 ◽  
Vol 61 (2) ◽  
pp. 245-251 ◽  
Author(s):  
Celia A. Contreras-Martinez ◽  
Francisca Contreras-Escareño ◽  
José O. Macias-Macias ◽  
Jose M. Tapia-Gonzalez ◽  
Tatiana Petukhova ◽  
...  
Keyword(s):  
Apis Mellifera ◽  
Honey Bee ◽  
Royal Jelly ◽  
Scientific Evidence ◽  
Sugar Content ◽  
Acceptance Rate ◽  
Coconut Water ◽  
Distilled Water ◽  
Queen Rearing ◽  
Honey Bee Queens

Abstract The need for the increased production of honey bee (Apis mellifera) queens has led beekeepers to use different substrates in artificial queen cups where larvae destined to become queens are deposited (grafting). However, not enough scientific evidence exists that indicates that this practice is useful and what substance offers the best results. This study was conducted to determine with the Doolittle queen rearing method the acceptance rate of larvae deposited on different substrates during grafting and to determine if the sugar content and pH of the substrates used affect the acceptance of larvae in cell builder colonies. The evaluated substrates were coconut water, apple nectar, royal jelly, cola soda and distilled water, plus control (without substrate). Grafted larvae of the six treatments were introduced into cell builder colonies and their acceptance verified after 72 h. Apple nectar provided the highest rate of larvae acceptance with 81.06%, followed by cola soda with 62.93%, coconut water with 60.90%, royal jelly with 57.82% and distilled water with 58.99%. The larvae acceptance rates of all substrates were significantly higher than the control, which had an acceptance rate of 47.04%. No significant relationship was found between the sugar content of the substrates and larvae acceptance. However, although not significant, a high negative correlation was found between the substrate pH and the number of accepted larvae (Rho = - 0.90, p = 0.07). These results suggest that the use of liquid acidic substrates during larvae grafting, in particular apple nectar, may increase the production of honey bee queens.

scholarly journals Juvenile Hormone Biosynthesis Gene Expression in the corpora allata of Honey Bee (Apis mellifera L.) Female Castes

PLoS ONE ◽  
2014 ◽  
Vol 9 (1) ◽  
pp. e86923 ◽  
Author(s):  
Ana Durvalina Bomtorin ◽  
Aline Mackert ◽  
Gustavo Conrado Couto Rosa ◽  
Livia Maria Moda ◽  
Juliana Ramos Martins ◽  
...  
Keyword(s):  
Gene Expression ◽  
Apis Mellifera ◽  
Juvenile Hormone ◽  
Honey Bee ◽  
Corpora Allata ◽  
Juvenile Hormone Biosynthesis ◽  
Biosynthesis Gene ◽  
Hormone Biosynthesis
Sign in / Sign up

Export Citation Format

Share Document