Abstract One of the biological indicators most used to determine health a fluvial ecosystem are benthic macroinvertebrates. The presence recurrent species in wide gradient latitudes, dominates biogeographic pattern macroinvertebrates Chilean fresh waters, nevertheless knowledge on communitarian ecology these rivers continues be scarce. Null models became powerful statistical tool for describing...

Realistic image synthesis research involves the simulation of visible light propagation within an environment with a view to computing an image that evokes a similar visual response to that perceived by an observer of that environment. This has involved the use of both sophisticated camera response and human visual system response models. In this paper we investigate the application of inverteb...

Two families of metalloproteases, the matrix metalloproteases (MMPs) and the A Disintegrin and Metalloproteases (ADAMs), have recently been implicated in the formation of neural connections in the developing central nervous system. Invertebrate and vertebrate axons fail to extend and/or make pathfinding errors when metalloprotease function is inhibited or absent. Culture studies suggest that th...

Invertebrate and vertebrate rhodopsins share a low degree of homology and are coupled to G-proteins from different families. Here we explore the utility of fly-expressed chimeras between Drosophila rhodopsin Rh1 and bovine rhodopsin (Rho) to probe the interactions between the invertebrate and vertebrate visual pigments and their cognate G-proteins. Chimeric Rh1 pigments carrying individual subs...

The genome sequence of the purple sea urchin, Strongylocentrotus purpuratus, a large and long-lived invertebrate, provides a new perspective on animal immunity. Analysis of this genome uncovered a highly complex immune system in which the gene families that encode homologs of the pattern recognition receptors that form the core of vertebrate innate immunity are encoded in large multigene famili...

In the past decade, the investment in fisheries development has grown remarkably in the Persian Gulf region. A 1800 km of northern coastline of the Persian Gulf, the Oman Sea and more than 14 islands belong to Iran have provided great possibilities of economic activities. In-shore marine islands such as Kish, Farour, Hendurabi, Tonb made a good opportunity for fishing and harvesting of ornament...

Neuropeptides play critical roles in synaptic signaling in all nervous systems. Unlike classical neurotransmitters, peptidergic neurotransmitters are encoded as preproproteins that are posttranslationally processed to yield bioactive neuropeptides. To identify novel peptidergic neurotransmitters, the Caenorhabditis elegans genome was searched for predicted proteins with the structural hallmarks...

qanat is one of the important inland aquatic ecosystems commonly containing freshwater in arid and semi-aridregions. there are 37 qanat chains in kerman county in the kerman province of iran. during past years, some ofthem have been dried as a result of deep wells digging in their vicinities. the present study used morphomeristicanalysis to characterize fishes and invertebrate fauna in the qana...

Abstract Compliance with the Water Framework Directive has not yet been met by Albania, and further efforts are needed to achieve this goal, including implementation of an extensive programme monitoring surface groundwater bodies. Benthic macroinvertebrates integrated element whose results being used assess achievement objectives. This study carried out strictly following protocols methodologie...

Insects of the order Hemiptera (Heteroptera) are considered largest group insects with incomplete metamorphosis. Representatives Gerromorpha and Nepomorpha infraorders found in Brazilian Savanna (Cerrado Biome). This manuscript provides information about occurrence distribution families genera that occur states Cerrado Biome, deposited UnB Aquatic Invertebrate Collection (CIAq-UnB). The collect...