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    Browsing Centre for Ecological Sciences (CES) by Title

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      • Mate Choice, Mate Sampling And Baffling Behaviour In The Tree Cricket Oecanthus henryi 

        Deb, Rittik (2017-07-12)
        Among the different sensory modalities that play a role in sexual selection, acoustic communication plays an important one. Acoustic communication has been known to be used for male-male competition (territory maintenance, ...
      • Mathematical and Computational Modelling Investigations of the Role of Trait Variation in Savanna-Woodland Bistable systems 

        Randhawa, Tanveen
        Over the last decade, several studies have shown the importance of individual variation in natural populations. Theoretical ecological studies are beginning to incorporate trait variations in models, but they continue to ...
      • Modelling Spatial Patterns of Landsacape Dynamics 

        Aithal, Bharath H (2017-11-23)
        Landscape is a heterogeneous collection of visibly distinct features of various elements of land and its various forms on the earth surface. Its pattern is subjected to disturbances and undergo rapid alterations in its ...
      • Molecular Ecology of the Primitively Eusocial Wasp Ropalidia Marginata : Relatedness, Queen Succession and Population Genetics 

        Chakraborty, Saikat (2018-06-08)
        Altruism is defined as a trait in an individual that increases some other individual’s fitness at the expense of her own. Therefore, existence of such traits in a population is an evolutionary paradox, as natural selection ...
      • Multimodal Duetting and Pair Formation in a Paleotropical False Leaf Katydid, Onomarchus uninotatus 

        Nair, Aswathy
        The spectacular diversity in the pair-formation strategies among animal groups has attracted the attention of many over the years. The roots of this diversity lie in the diversity of challenges that males and females face ...
      • On Trait Evolution in a Heterogeneous Environment: Oviposition Site Selection in a Mosquito in Response to Multiple Risk Factors 

        Sharma, Manvi
        A focus in evolutionary biology is to understand the drivers of diversity in animal behavioural traits in the living world. Animals facing similar problems in the environment, such as the problem of how much to invest in ...
      • Patterns and Drivers of Multimodal Signalling in Diurnal Geckos 

        Kabir, Md Shakilur
        Effective communication in animals comprise emission of a signal by a signaller and a response by a receiver, such that the interaction is beneficial to either only the signaller, or both the signaller and the receiver. ...
      • A Phylogenetic Perspective on The Phytogeography of Western Ghats 

        Divya, B
        I used a finer scale data of 156 published plots across the entire latitudinal range of WG, covering most of the protected forests. The pruned phylogeny for this study consisted of 367 species, of which ~ 50% are taxa endemic ...
      • Phylogeny And Biogeography Of Hemidactylus Oken, 1817 Geckos Of The Indian Subcontinent 

        Bansal, Rohini (2013-02-25)
        Geckos of the genus Hemidactylus Oken, 1817 are one of the most widely distributed and species-rich groups of gekkonids. With approximately 90 species, the genus Hemidactylus accounts for 10% of the total number of species ...
      • A place for everything and everything in its place: Spatial organization of wasps on the nests of the primitively eusocial paper wasp Ropalidia marginata 

        Sharma, Nitika
        In my thesis, I found that queens and workers in the primitively eusocial paper wasp Ropalidia marginata use space on their nests non-randomly with a majority of individuals showing spatial fidelity to small core areas, ...
      • Population Genetic Structure And Phylogeography Of The Asian Elephant (Elephas maximus) With Special Reference To India 

        Vidya, T N C (2011-05-04)
      • The Prediction Of Field Cricket Phonotaxis In Complex Acoustic Environments 

        Mhatre, Natasha (2010-09-24)
        Animals detect, recognize and localize relevant objects in noisy, multi-source environments. Female crickets locate potential mates in choruses of simultaneously calling males using acoustic signals, a behaviour termed ...
      • Queen Succession in the Primitively Eusocial Wasp Ropalidia Marginata 

        Saha, Paromita (2018-01-04)
        Social insects are the most dominant terrestrial fauna for the last 50 million years. This tremendous ecological success is accompanied by the fact that sociality has evolved multiple times independently and achieved highest ...
      • Queens And Their Succerssors : The Story Of Power In The Primitively Eusocial Wasp Ropalidia Marginata 

        Bhadra, Anindita (2009-04-30)
        Ropalidia marginata is characterized as a primitively eusocial wasp due to the absence of morphological differentiation between the queen and worker castes. Unlike other primitively eusocial wasps, however, the queen in ...
      • Resource allocation patterns and strategies in the mutualism between figs and fig wasps 

        Kulkarni, Manasa
        Mutualism involves exchange of services and rewards between the partners, resulting in a net benefit to all those involved. In many mutualisms, hosts are larger partners that interact with several individuals of smaller ...
      • Resource, Use, Culture And Ecological Change: A Case Study Of The Nilgiri Hills Of Southern India 

        Prabhakar, R (Indian Institute of Science, 2005-09-01)
        Over the last two decades, there have been increasing concerns about environmental degradation and its consequences on the long-term sustainability of socio-economic systems around the world. The publication of the report ...
      • Risks of finding mates in the wild: Ecological and Behavioural Determinants of Sex-biased Predation 

        Saha, Kasturi
        Sex-biased predation occurs when one sex of a prey species is consumed more than the other, irrespective of their relative availability (sex-ratio). Some of the potential factors leading to sex- biased predation are sex ...
      • The Role of Nursery Size and Plant Phenology on the Reproduction of and Relationships within a Fig-fig Wasp Nursery Pollination System 

        Krishnan, Anusha (2018-05-09)
        Obligate nursery pollination mutualisms such as the fig–fig wasp system, with their central plant–pollinator mutualism associated with non-pollinating satellite wasp species, can function as closed system microcosms ...
      • Seed Dispersal In The Tropical Dry Forests Of Mudumalai, Southern India 

        Prasad, Soumya (2011-06-30)
        Plants depend on a wide variety of vectors, both biotic and abiotic, to move their seeds to locations away from parent plants. The stages between seed production and seedling establishment in the plant life cycle are under ...
      • Sensory Ecology Of Acoustic Communication In The Tropical Bushcricket Genus Mecopoda : Mechanisms And Evolution Of Synchrony 

        Nityananda, Vivek (2009-07-10)
        In this thesis, I characterise five species of the bushcricket genus Mecopoda with respect to their acoustic signals and morphology and investigate the phenomenon of acoustic synchrony in one of these five species: Mecopoda ...

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