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Detailed description of first and last instar larva and pupa of Laccoptera foveolata [Boheman, 1856] from India with notes on its bionomy [Coleoptera: Chrysomelidae: Cassidinae]

100%

Ranade S. P. , Ghate H. V. , Swietojanska J.

Annales Zoologici

2004

tom 54

nr 4

First and last instar larva and pupa of Laccoptera foveolata (Boheman, 1856) are described in detail along with notes on the life history. The beetles were observed to breed from June to August. The host plant of the insect is Ipomoea nil (Convolvulaceae), as the entire life cycle is completed on this plant. A small, oval ootheca containing a single egg is partially covered by fecal matter. There are five larval instars; the larvae and pupa are typical for the specialized cassidines. Imagines develop in about 35-40 days from the fertilized egg deposited in the ootheca.

Tortoise beetles and their host plants from Pune [Maharashtra State, India] and nearby places [Coleoptera: Chrysomelidae: Cassidinae]

88%

Ghate H. V. , Borowiec L. , Rane N. S. , Ranade S. P. , Pandit S.

Genus. International Journal of Invertebrate Taxonomy

2003

tom 14

nr 4

The role of the basal forebrain in associative learning

75%

Hangya B. , Laszlovszky T. , Hegedus P. , Ranade S. P. , Lorenc M. , Kepecs A.

Acta Neurobiologiae Experimentalis

2017

tom 77

nr Suppl.1

The basal forebrain (BF) gives rise to the central cholinergic neuromodulatory system that innervates the entire neocortex and is thought to regulate sensory processing, attention and learning. However, it is not known when cholinergic neurons are recruited during behavior and how their activity might support different aspects of cognition. Intermingled with the cholinergic system, the BF also provides a parallel, equally widespread GABAergic projection of largely unknown function. Here we recorded different cell types of the mouse BF in associative learn ing paradigms. Central cholinergic neurons were characterized as bursting and non-bursting cells. We found that both subtypes responded phasically to primary reward and punishment with remarkable speed and precision (18±2 ms), unexpected for a neuromodulatory system. Responses to reward were scaled by reinforcement surprise, raising the possibility that the cholinergic system also conveys cognitive information. Tonic firing properties changed during sleep-wake states but remained similar for bursting and non-bursting neurons, contradicting the current view of bursting cells transmitting phasic information and tonic, non-bursting neurons setting ambient acetylcholine levels. PV-expressing GABAergic neurons showed tonic, sustained responses starting already after the predictive cues and outlasting cholinergic activation. These results suggest that cholinergic neurons form a rapid, reliable and temporally precise signaling route for reinforcement feedback, which may be specifically enhanced or enabled by disinhibition mediated by BF GABAergic projections. FINANCIAL SUPPORT: This work was supported by the “Lendület” Program of the Hungarian Academy of Sciences (LP2015-2/2015), ERC StG 715043, grants from the John Merck and McKnight Foundations, National Institute of Neurological Disorders and Stroke (R01NS075531), Swartz Foundation, Marie Curie International Outgoing Fellowship within the EU Seventh Framework Programme for Research and Technological Development.