Although the molecular mechanisms directing anteroposterior patterning of the Drosophila embryo (long-germband mode) are well understood, how these mechanisms were evolved from an ancestral mode of insect embryogenesis remains largely unknown. In order to gain insight into mechanisms of evolution in insect embryogenesis, we have examined the expression and function of the orthologue of Drosophi...

Lake Paranoá is a tropical reservoir for the City of Brasilia, which became eutrophic due to inadequate sewage treatment associated with intensive population growth. At present, two wastewater treatment plants are capable of processing up to 95% of the domestic sewage, thereby successfully reducing eutrophization. We evaluated both genotoxic and cytotoxic parameters in several fish species (Geo...

Extensive research into Drosophila melanogaster embryogenesis has improved our understanding of insect developmental mechanisms. However, Drosophila development is thought to be highly divergent from that of the ancestral insect and arthropod in many respects. We therefore need alternative models for arthopod development that are likely to be more representative of basally-branching clades. The...

The complexes of click beetles in the perennial plantations Western Caucasus are formed at expense species from surrounding (adjacent) biotopes. In forest zone, by their similarity to meadow biotopes (biocenoses) with inclusions dominant foothill lane. Agriotes tauricus Heyd., and Drasterius bimaculatus (Rossi) common all lanes zones studied region. Species gurgistanus (Fald.), Melanotus fuscic...

The impact of cercal air currents on singing motor pattern generation in the cricket 1 (Gryllus bimaculatus DeGeer) 2 Pedro F. Jacob 2 and Berthold Hedwig 3 Department of Zoology, University of Cambridge, Downing Street, Cambridge, CB2 3EJ, 4 United Kingdom 5 Champalimaud Neuroscience Program, Champalimaud Centre for the Unknown, Lisbon, 6 Portugal 7 8 Running head: Cercal impact on singing mot...

The fishery for octopus in Northwest Mexico has increased to over 2,000 tons annually, but to date the specific composition of the catch has been ignored. With at least three main species targeted by artisanal fisheries in the region with distinct life histories, the lack of basic biological information about the distribution, metapopulation size and structure of each species could impede effec...

Unlike most Arti cial Life studies, we use biological data to verify a hypothesis about control mechanisms. We recorded male cricket Gryllus bimaculatus calling song, built a robot with the hypothesised control mechanism for phonotaxis behaviour and veri ed that it could account for the behaviour by observing the robot doing phonotaxis to the real cricket song. Further, we present a set of robo...

The genus Rasilinus gen. n. is described (type species Rasilinus tchambicus sp. n.). Nine new species: Rasilinus bicolor sp. n., Rasilinus bifurcatus sp. n., Rasilinus bimaculatus sp. n., Rasilinus grandidens sp. n., Rasilinus longulus sp. n., Rasilinus subgemellus sp. n., Rasilinus subnodulus sp. n., Rasilinus tchambicus sp. n., Rasilinus virgatus sp. n. are described from New Caledonia. Illus...