Agrarian Studies Isolation and molecular characterizat The cropping pattern of the collected sites vary with a wide variety plantation crops were natural rubber dominates all the other crops Figure 2. Agrarian Studies Morphological diversity, nutritional We therefore conducted morphometric studies among workers and drones across 14 districts in Kerala with a view to characterize them. Even though numeric significance were shown, most of the morpometric characteristics of drones except AL and MdL were statistically non significant.
The thermoregulation studies during April-May revealed that T. The bees found to construct the brood cell as cell cup base, half constructed and nearly constructed cell per day at the rate of Iridipennis honey , the T. Even though numeric significance were shown, most of the morpometric characteristics of drones except AL and MdL were statistically non significant. The lowest HW among workers was 1. 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.
The lowest HW among workers was 1. Person correlation analysis showed considerable correlation among various morphometric characters in worker and drone bees across Kerala. Show full item record.
In the case of the drone bees, highly significant differences were seen only for AL and ML Figure 2 and 3.
Component plot in rotated space during principal component analysis among stingless bee workers in Kerala. Eigenevalues and percentage of variance were considered only for the above mentioned components as stingles include the tesis variation in the sample. Under the molecular characterization in stingless bee, T. Description of the morphometric variables used to classify Trigona iridipennis Smith in Kerala, India.
Distribution of factor scores among stingless bee workers across various locations in Kerala. The correlation matrix was selected sitngless the derived principal component 1. Comparative study of foraging activity in one queenright and one queenless colony of T.
The studies showed good possibilities of using artificial storage cups in etingless bees colonies which in turn will improve the harvesting process of its honey. Little is known about the variations exist among them. Agrarian Studies Morphological diversity, nutritional My thesis explores this central theme in behavioural ecology using stingless bees as study organisms.
The first author would wish to thank beloved Manager Rev. The data were checked for normal distribution using Kologovic-Smiroff KS test.
A wide range of variations especially worker and drone body size and measurement were reported Pignata et al. Distribution of factor scores among stingless bee drones across various locations in Kerala. An experiment suggests that this behaviour helps to avoid predation at the nest entrance. Library Cataloguing Date Deposited: Kerala state covers an area of bews, km2 with a population density of per km2 and spread across 14 districts Figure 2.
ANNOVA of morphometric characters among workers and drones across various districts in Kerala showed difference in statistical significance among the two castes.
Beees thermoregulation studies during April-May revealed that T. However, there is not thsis significant differences among drones across various districts. Chapter 3 describes a remarkable behaviour in Partamona helleri, which crashes head-first when entering its nest.
Description of some morphometric of Trigona iridipennis Smith worker and their characteristics. The samples were labelled according to the location and stored in airtight boxes until morphometric analysis were conducted.
Novel aspects of nest defence in stingless bees : Sussex Research Online
Materials and Methods 2. Stingleas of role in pollination and ecosystem services, honey bee population is drastically decreasing due to destruction of natural habitat, intensive agriculture, diseases and climate change et al. Agrarian Studies Soil properties and enzymatic charact Please use this identifier to cite or link to this item: Even though numeric significance were shown, most of the morpometric characteristics of drones except AL and MdL were statistically non significant.
The temperature inside the hive was found to be 1.
Doctoral thesis PhDUniversity of Sussex.