In the present work we have evaluated the acute toxicity of two anionic surfactants, alkyl benzene sulphonate (ABS) and sodium dodecyl sulphate (SDS) to eggs of gilthead Sparus aurata. At each surfactant concentration, we determined the exposure time required for 50% mortality of the eggs (LT50), surface tension and volume of oil globule in gilthead eggs. Clear dose-response relationships for m...

A challenge test for Photobacterium damselae subsp. piscicida (Phdp) resistance was carried out in two juvenile populations of gilthead seabream (Sparus aurata L.): F2_ATL and F0_MED. At 250 days post-hatching (dph), a fish plasma sample collected to measure humoral immune markers (peroxidase activity, bactericidal IgM immunoglobulin levels), at 272 dph were weighed inoculated with bacteria Phd...

In this work are presented data about the fauna of leaf beetles (Chrysomelidae, Coleoptera) from Tulca area, Bihor county during period 2009 – 2021. There were recorded 69 species belonging to 8 subfamilies, 35 genera, and 10 chromatic varieties. The identified relatively common in Romanian fauna, representing 12.02 % total Romania. Some species, through attacked host plants, can be harmful agr...

Three species of Michotamia are recorded from China. Of these Michotamia aurata (Fabricius, 1794) was previously reported from Hainan and Taiwan. Michotamia assamensis Joseph & Parui, 1995 is recorded from China and Laos for the first time, and Michotamia yunnanensissp. n., is described and figured. A key to the known species from China is provided. A new name, Michotamia subnigra, is given to ...

Transmission Mueller-matrix spectroscopic ellipsometry is applied to the cuticle of the beetle Cetonia aurata in the spectral range 300-1000 nm. The cuticle is optically reciprocal and exhibits circular Bragg filter features for green light. By using differential decomposition of the Mueller matrix, the circular and linear birefringence as well as dichroism of the beetle cuticle are quantified....

The Ulidiini (Ulidiidae: Ulidiinae) fauna of Israel is reviewed. Eighteen species in three genera (Physiphora, Timia and Ulidia) are recognized. Five species are described as new: Timia fallax n. sp., T. ritae n. sp., Ulidia aurata n. sp., U. hirsuta n. sp. and U. wasimi n. sp. The remaining species are redescribed and all species are illustrated. Keys for the identification of the local Physip...

This study investigated the antioxidant enzyme activities in skin mucus of gilthead seabream (Sparus aurata L.) at 3 and 7 days post-wounding (dpw). The expression levels genes that encode stress proteins (grp170, grp94, grp75, sod hsp70) regeneration-related (tf, igf1, tgfb1, der1, apo1 erdj3) also were determined. Mucus samples obtained from left right flanks non-wounded wounded fish. In both...

DNA transfer techniques allow genetic manipulation of commercial fish. However, marine species have received little attention because of their difficult zootechnical requirements. The seabream (Sparus aurata) has become one of the most important species in the aquaculture of Mediterranean countries, and the development of suitable DNA transfer procedures represents a main step in its genetic im...