1,721,012 research outputs found
Neoergasilus japonicus (Harada, 1930): A new non-indigenous copepod for the Italian fauna
No full textNeoergasilus japonicus (Harada, 1930) (Copepoda Ergasilidae) is reported for the first time in Italy. Several specimens of this
non-indigenous species were identified in the free-living zooplankton of 11 lakes out of 21 sampled seasonally during a
period of 2 years in southern Italy. Adults of both sexes were found, females always without ovisacs. Morphological
novelties, such as the bifid inner terminal seta of the furcal rami in females and the plumose terminal setae on either males
or females, are reported. Neoergasilus japonicus has been observed only in summer and autumn samples. At present, the
geographic distribution of the species is Holarctic, and it is expanding in Europe. Although this is the first record for Italy,
the presence in about half of the investigated lakes and the abundance of the found populations suggests that the species
distribution should be more extended than we presently know
Expanding distribution of Boeckella triarticulata (Thomson, 1883) (Copepoda: Calanoida: Centropagidae) in Southern Italy
No full textThe record of Boeckella triarticulata in Southern Italy attests the expanding distribution of this australasian copepod in Europe. The species was found in 3 recently realized lakes out of 21 water bodies sampled. The young age of the lakes colonized suggests that this species esteblishes itself in still immature aquatic habitats with a plankton community at an early developmnetal stage
Distribuzione dei Calanoida (Crustacea, Copepoda) nelle acque dolci superficiali della Provincia Faunistica Pugliese (Sud-Est Italia)
No full text
The faunal peculiarities of the Apulian temporary pools
No full textTemporary ponds have been studied form the zooplankton point of view in Apulia. Calanoida resulted more frequent in such environments than in lakes
About Confusion Among Products And Manufacturers
No full textThe boundary between a product copied and a new product, with the same functions of the existing ones, is difficult to establish, since both are based on previous common technical knowledge and the need to satisfy the consumer perception of the product. Starting from the analysis of a case study in the matter of legal challenges concerning alleged patent infringement, some considerations on this topic and patterns of new products development in established markets are presented. It emerges that technical knowledge combined with market and managers requirements and constraints induce similar products design. This is why companies developing new products based on existing concepts often face a lawsuit, moved from that competitor whose market is unjustly threatened
Time factor in the assessment of species richness
No full textthe time factor is considered in the explaination of the species abundance and distribution. The more years has an environment, the more species stay there
The age effect on the zooplankton community structure
No full textArtificial lakes (dams) have been considered to establish a role of the lake age on the zooplankton (species ridhness). A positive correlation exists but only until the 50 years
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