Pristomyrmex tsujii sp. n., an endemic species of the Fiji islands, is described from the worker, ergatoid queen, alate queen and male castes. The alate queen and male castes of Pristomyrmex mandibularis Mann are also described for the first time. The ergatoid queens for both species appear to be morphologically intermediate between the worker and alate queen castes. Pristomyrmex tsujii is read...

The regulation of reproductive division of labour is a key component in the evolution of social insects. Chemical signals are important mechanisms to regulate worker reproduction, either as queen-produced pheromones that coercively inhibit worker reproduction or as queen signals that honestly advertise her fecundity. A recent study suggested that a conserved class of hydrocarbons serve as queen...

To date very few studies have addressed the effects of inbreeding in social Hymenoptera, perhaps because the costs of inbreeding are generally considered marginal owing to male haploidy whereby recessive deleterious alleles are strongly exposed to selection in males. Here, we present one of the first studies on the effects of queen and worker homozygosity on colony performance. In a wild popula...

We investigated the relative contribution of the queen and workers to colony nestmate recognition cues and on colony insularity in the Carpenter ant Camponotus fellah. Workers were either individually isolated, preventing contact with both queen and workers (colonial deprived, CD), kept in queenless groups, allowing only worker-worker interactions (queen deprived, QD) or in queenright (QR) grou...

11:45 – 13:15 S1 OFDMA Systems I 1 Rate Adaptive Resource Allocation with Fairness Control for OFDMA Networks Emanuel B. Rodrigues (Universitat Politècnica de Catalunya, Spain); Ferran Casadevall (Universitat Politècnica de Catalunya, Spain) 2 Downlink Rate-Guaranteed Scheduling for Multiuser OFDMA Cellular Systems Jerzy Martyna (Jagiellonian University, Faculty of Mathematics and Computer Scie...

1. In eusocial insects, colony fission is a mode of dispersal by which a young queen leaves her nest with some workers to found a new colony. In these species, adult females (workers and the queen) should allocate most resources to increasing their colony size, which constrains the possibility of fission. In contrast, developing diploid larvae should have a preference for becoming a queen and h...

Giulia Menichetti, Daniel Remondini, Pietro Panzarasa, Raúl J. Mondragón, and Ginestra Bianconi Department of Physics and Astronomy and INFN Sez. Bologna, Bologna University, Viale B. Pichat 6/2 40127 Bologna, Italy School of Business and Management, Queen Mary University of London, London E1 4NS , United Kingdom School of Electronic Engineering and Computer Science, Queen Mary University of Lo...

∗Department of Neuroinflammation, Neuroimmunology Group, Institute of Neurology, Queen Square, London, WC1N 3BG, United Kingdom. Fax: +44 207 837 8553, E-mail: [email protected] †BioMérieux, R&D Department, Neurological Programs, Bat.07 Pieèce 112, Chemin de L’Orme, F–69290 Marcy L’Etoile, France ‡Department of Neuroinflammation, MRI Group, Institute of Neurology, Queen Square, London, WC...

This paper presents a technique of staganography where hiding of secret image done by LSB substitution and N-Queen matrix act as key. Key used to indicate pixel position of Cover image where substitution will take place.Memomy complex (Memory strand and DNA stickers) used to represent N-Queen matrix so that key isn’t understandable to unauthorized user. Size of NQueen matrix relate with no. of ...