Browsing NTNU Open by Author "Ian, Elena"
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Antennal-lobe neurons in the moth Helicoverpa armigera: Morphological features of projection neurons, local interneurons, and centrifugal neurons
Kymre, Jonas Hansen; Berge, Christoffer Nerland; Chu, Xi; Ian, Elena; Berg, Bente Gunnveig (Peer reviewed; Journal article, 2020)The relatively large primary olfactory center of the insect brain, the antennal lobe (AL), contains several heterogeneous neuronal types. These include projection neurons (PNs), providing olfactory information to higher‐order ... -
Antennal-lobe tracts in the noctuid moth, Heliothis virescens: New anatomical findings
Ian, Elena; Berg, Aleksander; Lillevoll, Siri Corneliussen; Berg, Bente Gunnveig (Journal article; Peer reviewed, 2016)As in other insects, three main tracts in the moth brain form parallel connections between the antennal lobe and the protocerebrum. These tracts, which consist of the antennal-lobe projection-neuron axons, target two main ... -
Coincidence of pheromone and plant odor leads to sensory plasticity in the heliothine olfactory system
Ian, Elena; Kirkerud, Nicholas N.; Galizia, C. Giovanni; Berg, Bente Gunnveig (Journal article; Peer reviewed, 2017)Male moths possess a highly specialized olfactory system comprised of two segregated sub-arrangements dedicated to processing information about plant odors and pheromones, respectively. Communication between these two ... -
Coincidence of pheromone and plant odor leads to sensory plasticity in the heliothine olfactory system
Ian, Elena; Kirkerud, Nicholas Hagen; Galizia, C. Giovanni; Berg, Bente Gunnveig (Journal article; Peer reviewed, 2017)Male moths possess a highly specialized olfactory system comprised of two segregated sub-arrangements dedicated to processing information about plant odors and pheromones, respectively. Communication between these two ... -
Digital visualisering av nevroner og relevante nevropil-områder i en insekt hjernemodell
Aune, Line Moen (Master thesis, 2021)Nevroners morfologi har vært et sentralt tema innen nevrovitenskapelig forskning siden slutten av 1800-tallet. I den senere tid har digitalisering av anatomiske elementer inkludert nevroner og hjerneområdene de innerverer, ... -
Distinct protocerebral neuropils associated with attractive and aversive female-produced odorants in the male moth brain
Kymre, Jonas Hansen; Liu, Xiaolan; Ian, Elena; Berge, Christoffer Nerland; Wang, Guirong; Berg, Bente Gunnveig; Zhao, Xincheng; Chu, Xi (Peer reviewed; Journal article, 2021)The pheromone system of heliothine moths is an optimal model for studying principles underlying higher-order olfactory processing. In Helicoverpa armigera, three male-specific glomeruli receive input about three female-produced ... -
Genomics of Sponge-Associated Streptomyces spp. Closely Related to Streptomyces albus J1074: Insights into Marine Adaptation and Secondary Metabolite Biosynthesis Potential
Ian, Elena; Malko, Dmitry B.; Sekurova, Olga; Bredholt, Harald; Rückert, Christian; Borisova, Marina E.; Albersmeier, Andreas; Kalinowski, Jörn; Gelfand, Mikhail S.; Zotchev, Sergey (Journal article; Peer reviewed, 2014)A total of 74 actinomycete isolates were cultivated from two marine sponges, Geodia barretti and Phakellia ventilabrum collected at the same spot at the bottom of the Trondheim fjord (Norway). Phylogenetic analyses of ... -
Identification of the Most Suitable Pheromone and Interspecific Odorant Stimuli in Respect to Their Quantities for the Application in Calcium Imaging on the Moth’s Primary Olfactory Center
Henriksen, Rikke Ingeborg (Master thesis, 2020)«Calcium imaging» teknikken som ble brukt i dette prosjektet tillater for undersøkelse av andre-ordens projeksjonsnevroner (PN) i det primære luktsenteret i hjernen til møllen Helicoverpa armigera. Fokuset i dette prosjektet ... -
Individual neurons confined to distinct antennal-lobe tracts in the heliothine moth: Morphological characteristics and global projection patterns
Ian, Elena; Zhao, Xin Cheng; Lande, Andreas; Berg, Bente Gunnveig (Journal article; Peer reviewed, 2016)To explore fundamental principles characterizing chemosensory information processing, we have identified antennal-lobe projection neurons in the heliothine moth, including several neuron types not previously described. ... -
Investigative anatomical mapping of the Helicoverpa armigera antennal lobe via anterograde labeling of olfactory sensory neurons from different antennal sections
Combs, Michael Joseph (Master thesis, 2022)Det kjemosensoriske systemet regnes som det eldste systemet fra et evolusjonært perspektiv, og det er godt representert i hele dyreriket. I de fleste organismer består den kjemosensoriske sansen av to systemer – henholdsvis ... -
Neuronal architecture of the second-order CO2 pathway in the brain of a noctuid moth
Chu, Xi; KC, Pramod; Ian, Elena; Kvello, Pål; Liu, Yand; Wang, Guirong; Berg, Bente Gunnveig (Peer reviewed; Journal article, 2020)Many insects possess the ability to detect fine fluctuations in the environmental CO2 concentration. In herbivorous species, plant-emitted CO2, in combination with other sensory cues, affect many behaviors including foraging ... -
A novel major output target for pheromone-sensitive projection neurons in male moths
Chu, Xi; Heinze, Stanley; Ian, Elena; Berg, Bente Gunnveig (Peer reviewed; Journal article, 2020)Even though insects have comparably small brains, they achieve astoundingly complex behaviors. One example is flying moths tracking minute amounts of pheromones using olfactory circuits. The tracking distance can be up to ... -
Parallel pathways of the moth olfactory system and their morphological and physiological characteristics
Ian, Elena (Doctoral theses at NTNU;2017:63, Doctoral thesis, 2017)Studying insect olfaction is interesting not only because it contributes to our general knowledge about fundamental chemosensory principles, but also because it is fascinating by itself. The opportunity of gaining insight ...