The present study provides the first quantitative assessment of cryptobenthic fish species diversity and abundance on hard bottoms below 20 m depth by examining Mediterranean underwater reefs with deep vertical cliffs.Quantitative sampling was performed at depths down to about 45 yielded 220 61 epibenthic individuals belonging 21 species, showing that fishes highly outnumbered individuals.The highlights high this unexplored part benthic community.The assemblage dominated family Gobiidae in...

Introduction: This research was performed to examine the effects of air and oxygen prebreathing on bubble formation, flow-mediated dilatation, psychomotor performance after scuba dives. Methods: Twelve divers two dives using a gas mixture oxygen, nitrogen, helium (trimix). In randomized protocol, they breathed or 30 min before trimix Venous were evaluated. The participants solved three tests: determining position light signal, coordination complex activity, simple arithmetic operations....

The present research quantitatively compared the fish composition among two methods for non-cryptic benthic species and one method cryptobenthic first time Mediterranean temperate reef assemblage. A visual census of fishes was performed within a cylinder 4 m radius 2 radius, while were collected using square 1 m2 with anesthetic. data material at fifty sampling points. together recorded 31 species, anesthetic 18 species. quantitative comparison collecting showed significantly different...

Cryptobenthic fishes are an underestimated and probably important component of coastal marine ecosystems that usually overlooked by standard methods for collecting studying benthic fishes. Studies focusing on cryptobenthic have been rare all based samples taken during daytime. The present study tested the difference in epibenthic fish composition, diel differences assemblage shifts infralittoral species between hidden open bottom spaces. It also looked significant habitat variables...

The first quantitative sampling method for deep cryptobenthic and epibenthic ichthyofauna using trimix diving was performed at about 60 m depth two localities off the island of Hvar (eastern central Adriatic Sea) in October 2014. safe, efficient, relatively simple technique combined with collecting fishes on studied depths is described explained. A total 16 fish specimens representing four species, i.e., three gobiid one blenniid were collected anaesthetic quinaldine six bottom quadrats...

Coralligenous habitat is considered as one of the most important special types in Mediterranean; however, due to its inaccessibility, little known about it, although it Mediterranean’s richest habitats terms species. Due a low number studies, was presumed that richness coralligenous fish assemblages underestimated using traditional visual census methods which are not applicable deep, steep, and vertical slopes cliffs do capture exhaustively cryptobenthic species commonly found this habitat....

AimTo assess the effect of air, gas mixture composed 50% nitrogen and oxygen (nitrox 50), or 1% 99% 99) on bubble formation vascular/endothelial function during decompression after self-contained underwater breathing apparatus diving.MethodsThis randomized controlled study, conducted in 2014, involved ten divers. Each diver performed three dives a protocol using gases: nitrox 50, 99 ascent. The were different days limited to 45 m sea water (msw) depth with 20 min bottom time. Nitrogen...

In June 2018 two specimens of recently described fish Spelegobius llorisi Kovačić, Ordines et Schliewen, 2016, were collected at Hvar Island in the central Adriatic Sea 52 m depth during a SCUBA diving fieldwork, aimed to quantitatively study fishes rhodolith beds. The findings represent third known record this species and first for Sea. complete intact material enabled colouration morphological details not recorded damaged type from beam trawl.

Diver-based underwater visual census (UVC), particularly transect-based survey, is a widely used method for the study of tropical and temperate fish assemblages. However, due to logistical constraints associated with conventional SCUBA diving, deeper habitats, such as vertical rocky reefs, are rarely studied poorly known. This paper describes Deep Vertical Transect (DVT) safe effective assessing in waters up 50 m depth. It based on sampling transects browsing within it (S-type transect) by...

The present study investigated the influence of SCUBA dives with compressed air at depths 10 and 20 m on ECG-derived HRV parameters in apparently healthy individuals. We hypothesized that cardiac sympathetic activity (measured by parameters) adapts proportionally to diving depth, both time- frequency-domain are sensitive enough track changes ANS function during activities subsequently recovery period. Eleven middle-aged recreational divers (nine men two women, age 43 ± 8, all nonsmokers)...

Some SCUBA diving time and depth profiles have been shown to increase pulmonary artery systolic pressure (PASP) post-dive. while breathing compressed air results in a hyperoxic fraction of inspired oxygen divers are not hypoxic following dive, so vasoconstriction is responsible for the observed PASP. In addition, no studies date examined whether increased PASP due or cardiac output (Q) dive. The purpose this study was examine nitric oxide availability post-dive associated with diving. 26...

Background/Aim. Scuba diving is one of the sports with fastest growing popularity. Nowadays doctors dental medicine meet divers-patients in their offices more often. Treatment these patients has some specific features that are related to difficulties temporomandibular joint, masticatory muscles and soft tissues oral cavity. A set those complaints represent a condition called ?diver's mouth syndrome?. Most scuba divers complain joint pain; inadequate mouthpieces can exacerbate dysfunction...

The new video on underwater scooter method in combination with rebreather diving techniques was introduced and applied for visual census of fish assemblages. presently facilitates deeper studies below 40 m, where they have rarely been done before due to the increasing research challenges depth. is also expected be less disturbing faster compared swimming divers. study assemblages from 8 50 m depth conducted at two locations east Adriatic using 102 transects. environmental variables...

Breathing oxygen enriched gases during decompression procedure leads to decreased time spent at specific stop and ultimately shorter dives with same amount of on the bottom. However, breathing can damage endothelial function reduction in flow mediated vasodilation (FMD). Five female five male experienced SCUBA divers, a mean age 39±3 years (mean±SEM), were included this investigation. Each diver performed three 45 meters sea water 20 minutes bottom using air. Air, nitrox 50 or 99 used stops...

Abstract Marine species exhibiting wide distributional ranges are frequently subdivided into discrete genetic units over limited spatial scales. This is often due to specific life-history traits or oceanographic barriers that prevent gene flow. Fine-scale sampling studies revealed distinct phylogeographic patterns in the northeastern Atlantic and Mediterranean, ranging from panmixia noticeable population structure. Here, we used mitochondrial sequence data analyse connectivity bogue Boops...