Browsing by Author "SINGH, NARINDERJIT"
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ThesisItem Open Access PALYNOLOGICAL STUDIES ON BUMBLE BEE FLORA UNDER MID-HILL CONDITIONS OF HIMACHAL PRADESH(UHF,NAUNI, 2017) SINGH, NARINDERJIT; RANA, KIRANABSTRACT The present investigations entitled “Palynological studies on bumble bee flora under mid-hill conditions of Himachal Pradesh” were carried out in the Apiculture laboratory of the Department of Entomology. In this study, the palynological studies of pollen loads and faeces were carried out to determine food plants of B. haemorrhoidalis. Visual observation method was also adopted to know about polleniferous and nectariferous plants of B. haemorrhoidalis. Pollen analysis of total 73 pollen loads collected throughout the year (2016) showed the presence of total 68 pollen types. Total 21 plant species were considered as principal forage plants as pollen grains of these formed one species pollen loads. They were: Solanum melongena, Solanum lycopersicum, Capsicum annuum, Digitalis purpurea, Digitalis lanata, Oenothera biennis, Martynia annua, Hibiscus syriacus, Agapanthus umbellatus, Salvia moorcroftiana, Moluccella laevis, Cassia sophera, Cassia fistula, Clitoria ternatea, Actinidia deliciosa, Peltophorum ferrugineum, Lupinus hartwegii, Dahlia imperialis, Dahlia pinnata, Zinnia elegans and Justicia adhatoda . The pollen analysis of bumble bee faeces of two months collected from field shifted bumble bee colony revealed the presence of total 9 pollen types. Total 43 plant species belonging to 21 different families were regularly visited by bumble bees. Of these plants 33 provides both nectar and pollen, 3 only nectar and 7 only pollen. Total twenty two plants were visited occasionally by bumble bees belonging to 13 families. Out of 22 plant species, 14 provide both pollen and nectar, 6 nectar only and 2 pollen only. The pioneering studies revealed the presence of sufficient floral resources for utilization by B. haemorrhoidalis in Nauni area. However, attention must be given to maintain the existing bumble bee flora and multiplication of multipurpose plant species in order to make it sustainable. under mid-hill conditions of Himachal Pradesh” were carried out in the Apiculture laboratory of the Department of Entomology. In this study, the palynological studies of pollen loads and faeces were carried out to determine food plants of B. haemorrhoidalis. Visual observation method was also adopted to know about polleniferous and nectariferous plants of B. haemorrhoidalis. Pollen analysis of total 73 pollen loads collected throughout the year (2016) showed the presence of total 68 pollen types. Total 21 plant species were considered as principal forage plants as pollen grains of these formed one species pollen loads. They were: Solanum melongena, Solanum lycopersicum, Capsicum annuum, Digitalis purpurea, Digitalis lanata, Oenothera biennis, Martynia annua, Hibiscus syriacus, Agapanthus umbellatus, Salvia moorcroftiana, Moluccella laevis, Cassia sophera, Cassia fistula, Clitoria ternatea, Actinidia deliciosa, Peltophorum ferrugineum, Lupinus hartwegii, Dahlia imperialis, Dahlia pinnata, Zinnia elegans and Justicia adhatoda . The pollen analysis of bumble bee faeces of two months collected from field shifted bumble bee colony revealed the presence of total 9 pollen types. Total 43 plant species belonging to 21 different families were regularly visited by bumble bees. Of these plants 33 provides both nectar and pollen, 3 only nectar and 7 only pollen. Total twenty two plants were visited occasionally by bumble bees belonging to 13 families. Out of 22 plant species, 14 provide both pollen and nectar, 6 nectar only and 2 pollen only. The pioneering studies revealed the presence of sufficient floral resources for utilization by B. haemorrhoidalis in Nauni area. However, attention must be given to maintain the existing bumble bee flora and multiplication of multipurpose plant species in order to make it sustainable.