New records of rare species in the Mediterranean Sea 2020

This Collective Article presents information about 17 taxa belonging to four Phyla (one Cnidaria, two Arthropo da, four Mollusca, and ten Chordata) and extending from the Western Mediterranean to the Levantine Sea. The new records were reported from nine countries as follows: Algeria: first published records of the clingfishes Apletodon dentatus and Lepadogaster lepadogaster after 1955; France: first record of the tripletail Lobotes surinamensis in French Mediterranean waters; Italy: new records of the rare bonito Orcynopsis unicolor and the recently described nudibranch Elysia rubeni from Sicily; first records of the parasitic cirriped Sacculina eriphiae and the nudibranch Dondice trainitoi in the Ionian Sea; first record of the nudibranch Taringa tritorquis in the Mediterranean Sea; first record of the tripletail Lobotes surinamensis in the North Ionian Sea; first documented record of the cephalopod Macrotritopus defilippi in the Adriatic Sea; Slovenia: first record of the Mediterranean endemic cryptobenthic goby Odondebuenia balearica; Montenegro: several recent occurrences of the critically endangered bull ray Aetomylaeus bovinus in the South-eastern Adriatic Sea; Greece: records of the nudibranch Dondice trainitoi in the Eastern Medi terranean Sea; new record of the occurrence of the Mediterranean spearfish Tetrapturus belone from Greece (Rhodes Island); Turkey: recent captures of the vulnerable ocean sunfish Mola mola, caught by purse-seine, in the Aegean Sea and the Dardanelles; new record of the luvar Luvarus imperialis along the Aegean coast of Turke

Quadratic Parametric Interactions in Organic Waveguides

This chapter addresses issues related to quadratic parametric interactions in organic waveguides. It attempts to give an overview of the field, especially emphasizing the initial experimental milestones together with the most recent results. This field of research is very challenging in terms of the technology required to turn a good candidate material into a useful optical device demonstration. The keys to this problem are the phase-matching conditions that must be fulfilled by the different interacting waves. These points are illustrated by the bibliography that, still to this day, contains mainly demonstration of the potential of various materials with very few subsequent demonstrations of efficient optical device operation. Nevertheless, this is still a relatively young field of research and there is no doubt that, given time, effort and investment, it will grow and mature along the lines of its successful electro-optic counterpart. © Springer-Verlag Berlin Heidelberg 2002