Chapter 3 describes a remarkable behaviour in Partamona helleri, which crashes head-first when entering its nest. Trigona iridipennis Smith are kept in India for centuries for the high medicinal value of honey as well as propolis and bee wax Rasmussen, ; Cortopassi-Laurino et al. Recent studies also showed the various nesting behaviour of Trigona iridipennis Smith in natural habitat as well as its adaptability various antroropoegnic habitats Virkar et al. George Njarakunnel, respected Principal Dr. Majority of the samples were collected from wooden boxes followed by bamboo and earthen pots. The investigations were carried out during at G.
Thesis Doctoral Schools and Departments: Table of contents Table of figures Table of tables List of abbreviations Morphometric characterization of stingless bees Trigona iridipennis Smith in Kerala: The bees found to construct the brood cell as cell cup base, half constructed and nearly constructed cell per day at the rate of Eigenvalues and percentage of variance explained by the first four components in a PCA of Trigona iridipennis Smith workers in Kerala. Also a total 61 different pollen morphs were observed in study, out of which 9 were identified as Bougainvillea peruviana, Brassica spp. The major species of stingless bees in Kerala is Trigona iridipennis Smith which are easy to domesticate due to low temperament and easy adaption to various habitats. The thesis contains a general introduction Chapter 1 , three data chapters and a final discussion 5.
K Head of the Department, Biotechnology for the valuable suggestions, support and encouragements. Thesis Doctoral Schools and Departments: Biology – Zoology Swarming, drone movements, foraging b An experiment suggests that this behaviour helps to avoid predation at the nest entrance. Based on our studies, even though we detected significant differences among worker morhphotmetry we could not to find distinguishing and remarkable differences among collected samples.
Novel aspects of nest defence in stingless bees
Chapter 3 describes a remarkable behaviour in Partamona helleri, which crashes head-first when entering its nest. The first three PCs explained tgesis The head and thorax were dissected, and size of the following variables were recorded: Firstly we thank God Almighty whose blessing were always with us and helped us to complete this research work successfully.
The validity PCA of 21 morphometric characters was justified as indicated by the Kaiser-Meyer-Olkin measure of sampling adequacy of 0. Map of Kerala showing various sample collection points marked as a star symbol during the study.
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Description of Trigona iridipennis Smith worker and their morphometric characteristics. The major species of stingless bees in Kerala is Trigona iridipennis Smith which are easy to domesticate due to low temperament and easy adaption to various habitats. Doctoral thesis PhDUniversity of Sussex. Value stinglesa for each worker and drone bees for each principal component were obtained from the first three components of PCA. Chapter 4 studies nest defence in the hovering guards of Tetragonisca angustula, and demonstrates that through coordinated vigilance, a group level behaviour rarely observed in animals, the ability of the group to detect predators is enhanced.
Majority of cups were removed by bees, however the bees accepted 2 installed cups of 5mm dia propolis cup sealed on 5th day after installation and 8mm dia propolis cups sealed on 13th day after installation. The morhometric characters of workers and drones varied widely across all the districts for workers and selected districts for drones.
They may be interpreted as nutritional, seasonal and climatic factors. Description of thesid various habitat of Trigona iridipennis Smith drone and their characteristics.
Novel aspects of nest defence in stingless bees : Sussex Research Online
A little is reported so far about the morphometric studies of the Trigona iridipennis Smith as across various districts of Kerala. Please use this identifier to cite or link to this item: The samples were labelled according to the location stingess stored in airtight boxes until morphometric analysis were conducted.
The lowest HW among workers was 1.
Component plot in rotated space during principal component analysis among stingless bee drones. Agrarian Studies Isolation and molecular characterizat Morphometric characterization of stingless bees Trigona iridipennis Smith in Kerala: Majority of the samples were collected from wooden boxes followed by bamboo and earthen pots. Distribution of factor scores among stingless bee drones across various locations in Kerala.
George Njarakunnel, respected Stinglwss Dr. Biology – Zoology Novel and innovative techniques in Me The data were checked for normal distribution using Kologovic-Smiroff KS test. Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
Shackleton, Kyle Novel aspects of nest defence in stingless bees.