ORCID Profile
0000-0002-4678-343X
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Publisher: Informa UK Limited
Date: 2001
Publisher: CSIRO Publishing
Date: 2000
DOI: 10.1071/EA98148
Abstract: The aim of this preliminary experiment was to evaluate the effect of distance from the apiary on pod yield in canola. Beehives were used at a density of 1.28 hives/ha. The results showed that the number of pods lant decreased as distance from the apiary increased, when plant height and branch number were used as explanatory variables. Multiple linear regression indicated a predicted pod loss of 15.3 pods lant over a distance of 1000 m from an apiary. This was equivalent to a 16% loss based on an average of 59 plants/m2 and average pod production of 5666 pods/m2 from this experiment. For a 2 t/ha crop this would be equivalent to about 320 kg/ha. The results are only indicative because of the variation in the crop studied and lack of replication, but may, in fact, be a conservative estimate.
Publisher: Wiley
Date: 26-06-2007
Publisher: CSIRO Publishing
Date: 2002
DOI: 10.1071/EA01141
Abstract: The development of a simple, durable, lightweight and disposable beehive for high-density (and netted) orchards and crops distant from beekeeping areas provides a useful product and a further ersification for beekeepers involved in professional pollination services. The total weight of a fully developed Beetube ranged from 2.23 to 3.64 kg, contained about 9101 bees, 3038 cm2 of comb, and had a morning and afternoon flight activity of 19-43 and 11-34 honey bees per minute, respectively.
Publisher: CSIRO Publishing
Date: 2002
DOI: 10.1071/EA00160
Abstract: Western Australian eucalypt pollens in this research have low levels of lipid (0.59–1.9%) when compared with many other plant species that have evolved alongside the European honeybee. Eucalypt-pollen lipid was dominant in linoleic acid (35.7–48%). The six other major fatty acids that were present in the lipid were myristic, palmitic, stearic, oleic, linolenic and arachidic acids. Linoleic acid was dominant in eucalypt pollen at average concentrations of 2.77–5.81 mg/g pollen. These results could be of significance to the Australian beekeeping industry in refining disease-management strategies in the light that other researchers have found that 2 economically damaging bee diseases (EFB and AFB) are inhibited by certain concentrations of the acid. Redgum- or marri (Corymbia calophylla)-pollen lipid was also dominated by 2 other known antibacterial fatty acids: myristic (0.25 mg/g pollen) and linolenic (1.06 mg/g pollen), when compared with the other eucalypts studied.
Publisher: CSIRO Publishing
Date: 1996
DOI: 10.1071/EA9960513
Abstract: Agriculture Western Australia's former Queen Bee Breeding Program (QBBP) was successful in significantly raising the productivity of honey bee colonies for those beekeepers who regularly purchased queen bees from the program. The increased productivity was measured through honey production. Over 2 nectar flows, colonies headed by queens purchased from the breeding program (group 2) showed a 35% increase in honey production over unselected colonies (group 1-not purchased from the QBBP). Over in idual nectar flows, colonies headed by queens purchased from the breeding program showed a 22% increase in honey production from a Eucalyptus calophylla nectar flow, and for a second protracted winter nectar flow from coastal heath they also produced 46% more honey than unselected queen bees. Honey production (kg/colony.day) from Eucalyptus calophylla was 0.95 and 1.13 kg for groups 1 and 2, respectively. Honey production from the coastal heath was 0.27 and 0.4 kg/colony.day for groups 1 and 2, respectively. Results were projected for 1 year and scaled up to represent a commercial apiary of 400 colonies. According to estimates from the data, group 2 beekeepers should have benefited from the QBBP by being able to produce 24 t of honey from their apiaries, valued in excess of $A32 000, more than group 1 beekeepers.
Publisher: CSIRO Publishing
Date: 2005
DOI: 10.1071/EA02170
Abstract: This research examined the benefits of placing hives of honeybees (Apis mellifera L.) in canola (Brassica napus L.) at a density of approximately 1 hive/ha. We tested 3 main hypotheses. First, deploying honeybees increases the yield of seed. Second, that the benefits of honeybee pollination decline the further plants are from an apiary. Third, poorly pollinated plants should channel more resources into larger seeds, whereas plants benefiting from insect pollination should produce more but smaller seeds. The experiment confirmed all 3 hypotheses. Yields of seed increased by more than 20% or by 400 kg/ha, whereas the yield declined in plots located more than 200 m from the apiary. There are several explanations for the increased yield, including an enhanced production of fertile pods and, therefore, more seed, particularly small seed.
Publisher: Wiley
Date: 03-1991
Publisher: Informa UK Limited
Date: 02-03-2022
Publisher: Informa UK Limited
Date: 2012
Publisher: CSIRO Publishing
Date: 1989
DOI: 10.1071/MF9890327
Abstract: During the summer, one-year-old western school prawns (Metapenaeus dalli) congregate and spawn in reduced-salinity ( 10 g kg-1) regions of the Murray River, a tributary of the large Peel-Harvey estuarine system in Western Australia. Although some 1 + prawns are found into the following spring, few if any survive or remain in the system until the next spawning season. Growth is highly seasonal and females attain a greater carapace length than males by the end of the first year of life (18 v. 14 mm). Changes in the incidence of spermatophore deposition, gonadosomatic index (GSI) and ovarian stage during the spawning period are described. Although the timing of recruitment of O+ prawns could be related to the sharp peak in the incidence of spermatophore deposition and GSI in 1985-86, such relationships were not so clearly defined in 1987-88 when the incidence of spermatophore deposition remained above 9% for over twice the length of time.
Publisher: Wiley
Date: 05-2010
Publisher: Wiley
Date: 08-2010
Publisher: CSIRO Publishing
Date: 2007
DOI: 10.1071/EA04222
Abstract: The parasite, Nosema apis, was found to be widespread among feral populations of honey bees (Apis mellifera) in the south-west of Western Australia. The location, month of collection and whether the feral colony was enclosed in an object or exposed to the environment, all affected the presence and severity of infection. There was no significant difference in the probability of infection between managed and feral bees. However, when infected by N. apis, managed bees appeared to have a greater severity of the infection.
Publisher: Informa UK Limited
Date: 07-09-2018
Location: Australia
No related grants have been discovered for Rob Manning.