Latest Events

Topic: 
Visit of students from Department of Zoology, West Bengal State University
Date & Time: 
19 Jan 2015 - 10:00am to 5:00pm
Event Type: 
Lab visit
Venue: 
Labs
Abstract:

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Speaker Bio: 
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Topic: 
Climate-growth relationship in Abies pindrow along an elevation gradient in forests of north-western Himalayas.
Speaker: 
Rayees Malik, Prof. R Sukumar Lab. , CES, IISc Bangalore, IISc Bangalore
Date & Time: 
9 Jan 2015 - 2:30pm
Event Type: 
Comprehensive Examination
Venue: 
CES Seminar Hall, 3rd Floor, Biological Sciences Building
Coffee/Tea: 
Before the talk
Abstract:

The Himalayan region is very important in the context of global climate change because of its influence on the Asian
summer monsoon circulation, which affects the climates of many countries of the world. The instrumental climate
records for Himalayas go back to only about 100-120 years. It is therefore useful to have long-term high resolution
palaeoclimatic records for this region to better understand its climate and its large-scale spatial linkages. Tree
rings offer an excellent proxy to reconstruct the high resolution past climate and many tree ring based climatic
reconstructions have already been done in many regions of the world. Conifers of Himalaya offer an excellent
dendroclimatic tools to reconstruct the past climate of the region for many hundreds of years. Several other studies
have already demonstrated the dendroclimatic potential of Himalayan conifers because of their distinct annual growth
rings, great age and good intra and inter-species correlations. The tree ring formation occurs by the activity of
vascular cambium. The activity of the cambium and the hence the formation of tree rings is controlled by several
environmental factors.
My study aims to reconstruct the past climate of Kashmir Himalayan region with the help of tree rings. I am selecting
Abies pindrow (Himalayan fir) for this study because of its huge dendroclimatic potential. I will also study its
growth response to different climatic factors like temperature, precipitation and humidity at different elevations. I
will study the cambial phenology of this species at different elevations to have a better understanding of the effects
of present climate on cambial activity at different elevations and its variability with age. This study will help to
predict the performance of Abies pindrow at different elevations in future, which in turn will help in better forest
management policies in the context of global climate change.

Topic: 
Life in the Undergrowth: Invasion of the Land
Date & Time: 
10 Dec 2014 - 4:00pm
Event Type: 
Documentary
Venue: 
CES Seminar Hall, 3rd Floor, Biological Sciences Building
Coffee/Tea: 
Before the talk
Abstract:

About the Documentary:
"Just over 400 million years ago creatures left the seas to move onto land. They were the invertebrates. Since then
they have become the most successful group of animals, adapting to every environment on earth. Now, for every human
there are 200 million of them. Their largely unseen world is now revealed as David Attenborough tells the story of the
land-living invertebrates."
Source: http://www.imdb.com/title/tt0760222/episodes?season=1&ref_=tt_eps_sn_1

"David Attenborough tells the story of the land-living invertebrates. He delves into the private life of Europe's
dramatic leopard slug, a common garden resident with a truly bizarre end to its marathon mating ritual; watches the
courtship ballet of tiny springtails on the underside of a leaf; sees swarms of bright red South African millipedes
find partners, and in the caves of Venezuela meets the giant bat-eating centipede."
Source: http://www.bbc.co.uk/sn/tvradio/programmes/lifeintheundergrowth/prog_sum...

Topic: 
Life in the Undergrowth: Taking to the Air
Date & Time: 
24 Dec 2014 - 4:00pm
Event Type: 
Documentary
Venue: 
CES Seminar Hall, 3rd Floor, Biological Sciences Building
Coffee/Tea: 
Before the talk
Abstract:

.About the Documentary:
"As the early June sun begins to set over a calm river in Central Hungary, masses of ghostly shapes emerge from their
larval cases to take to the air for the first time. They are mayflies and in a spectacular display, thousands of them
demonstrate how the very first wings were used.

From the stunning aerobatics of hoverflies in an English garden to the mass migration of purple crow butterflies in
the valleys of Taiwan, this episode tells the tale of the first animals ever to take to the air. Unique footage
reveals the lightning fast reactions of bluebottles and hoverflies, filmed with one of the world's fastest cameras,
and David Attenborough handles the world's largest (and perhaps most ferocious) insect - the Titan beetle."
Source: http://www.bbc.co.uk/sn/tvradio/programmes/lifeintheundergrowth/prog_sum...

Topic: 
The poleward range expansion of European populations of the wasp spider Argiope bruennichi is associated with a thermal niche shift and the recent admixture of Eastern and Western Palearctic glacial lineages
Speaker: 
Henrik Krehenwinkel, Department of Evolutionary Genetics, Max Planck Institute for Evolutionary Biology
Date & Time: 
12 Dec 2014 - 4:00pm
Event Type: 
Talk
Venue: 
CES Seminar Hall, 3rd Floor, Biological Sciences Building
Coffee/Tea: 
Before the talk
Abstract:

Poleward range expansions are currently observed in many species and commonly attributed to global change. However, recent research indicates that they might be facilitated by adaptation. An example is provided by Argiope bruennichi, a widely distributed Palearctic spider, which greatly expanded its European range in the past decades. The colonization of habitats in Northern Europe was apparently enabled by a climatic niche shift. This is mirrored in an increased cold tolerance and a specific cold stress induced gene expression response of expansive Northern European spider populations. In order to unravel the genetic origin of expansive spiders, we sequenced genomes of populations throughout the species’ range. Our analysis identifies three genetic lineages in the Palearctic, an East Asian, a European and an Azorean. The Asian and European clades form a contact zone in Central Asia, from where Asian genetic variation enters the European genepool. An analysis of historical DNA indicates that this secondary contact is less than 100 years old. Interestingly, we find considerable introgression in the newly colonized invaded habitat of the
species in Northern Europe, while introgression is barely affecting native populations. We speculate that an admixture of glacial lineages might have provided the variation for a rapid genetic and evolutionary divergence of spider populations.

Speaker Bio: 
Henrik Krehenwinkel, obtained his PhD at the Max Planck Institute for Evolutionary Biology in Plön, Germany. He is currently postdoctoral researcher with Prof. Diethard Tautz at the MPI in Plön. His research focuses on the ecological genomics of contemporary range expansion
Topic: 
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Date & Time: 
6 Feb 2015 - 9:00am to 7 Feb 2015 - 6:00pm
Event Type: 
Symposium
Venue: 
CES Seminar Hall, 3rd Floor, Biological Sciences Building
Abstract:

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Topic: 
Determinants and costs of acoustic signalling patterns in the field cricket, Plebeiogryllus guttiventris
Speaker: 
Sambita Modak, IISc.
Date & Time: 
16 Dec 2014 - 2:30pm
Event Type: 
Comprehensive Examination
Venue: 
CES Seminar Hall, 3rd Floor, Biological Sciences Building
Coffee/Tea: 
Before the talk
Abstract:

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Speaker Bio: 
Graduate Student Prof. Rohini Balakrishnan's lab
Topic: 
CANCELLED: The Population-to-Species Continuum: Implications for Taxonomy, Ecology and Evolution
Speaker: 
Dr. Krushnamegh Kunte, NCBS
Date & Time: 
19 Dec 2014 - 4:00pm
Event Type: 
Talk
Venue: 
CES Seminar Hall, 3rd Floor, Biological Sciences Building
Coffee/Tea: 
Before the talk
Abstract:

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Speaker Bio: 
Ramanujan Fellow and Reader F, National Center for Biological Sciences (NCBS) Member, IUCN/Species Survival Commission South Asian Invertebrate Specialist Group (2013-2016) Indian Foundation for Butterflies and Butterflies of India website: http://ifoundbutterflies.org/
Topic: 
Measuring information flow in fish-robot interactions
Speaker: 
Sachit Butail, Indraprastha Institute of Information Technology, Delhi (IIITD), India
Date & Time: 
1 Dec 2014 - 4:00pm
Event Type: 
Talk
Venue: 
CES Seminar Hall, 3rd Floor, Biological Sciences Building
Coffee/Tea: 
Before the talk
Abstract:

Robots are controllable machines that can be made to look and move like animals thus providing a viable tool for studying animal behavior. At the same time, a clear measure of their influence on an animal subject is not available. In this talk I will describe how tools from information theory, in particular a quantity called transfer entropy, can be used to measure the directional information flow between animals and robots. We will consider a robotics based experimental setup, in which a zebrafish is observed as it interacts with a robotic replica. Our results show that the transfer entropy is significantly more from the replica towards the focal subject than the other way around, and that this difference is not present when the replica is replaced by a conspecific. These results support the use of transfer entropy as a measure of information flow in social animal behavior, and present an indirect evidence of the effectiveness of robots in animal behavior studies.

Speaker Bio: 
Sachit Butail is an Assistant Professor at the Indraprastha Institute of Information Technology, Delhi (IIITD), India. He received his Ph.D. in 2012 in Aerospace Engineering from University of Maryland, College park where his dissertation was on the motion reconstruction of animal groups using methods from estimation theory and computer vision. From 2012 to 2014, he was a postdoctoral fellow at the Dynamical Systems Laboratory at New York University where he worked on problems in collective behavior, machine learning, and animal-robot interactions. His research interests are in the areas of collective behavior, pattern recognition, complex systems, and robotics. He is a member of IEEE and SIAM.
Topic: 
Materials and methods in collective behavior experiments
Speaker: 
Sachit Butail, Indraprastha Institute of Information Technology, Delhi (IIITD), India
Date & Time: 
28 Nov 2014 - 2:00pm to 5:00pm
Event Type: 
Workshop
Venue: 
CES Lotka Volterra
Abstract:

Collective motion of animal groups continues to capture the imagination of engineers and biologists alike. To engineers, collective motion provides inspiration for the design of robotic swarms that can perform tasks far beyond the capabilities of a single inexpensive robot. To biologists, emergent behaviors raise questions about decision-making and individual perception within the group. In this workshop we will learn about the process of going from mathematical models to laboratory and field experiments in order to validate a hypothesis. We will begin with looking at two different models of collective behavior and discuss the techniques and challenges in data collection used to validate these models. We will then ask the question of whether collective behavior can be modulated? This will motivate a discussion on the use of robots in interactive experiments both for use in animal behavior as well as for field deployment where robots can aid in search and rescue. The format of the workshop will involve going through some recent papers in these areas, watching experimental videos, and discussing results.

Speaker Bio: 
Sachit Butail is an Assistant Professor at the Indraprastha Institute of Information Technology, Delhi (IIITD), India. He received his Ph.D. in 2012 in Aerospace Engineering from University of Maryland, College park where his dissertation was on the motion reconstruction of animal groups using methods from estimation theory and computer vision. From 2012 to 2014, he was a postdoctoral fellow at the Dynamical Systems Laboratory at New York University where he worked on problems in collective behavior, machine learning, and animal-robot interactions. His research interests are in the areas of collective behavior, pattern recognition, complex systems, and robotics. He is a member of IEEE and SIAM.

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