Mussel shells, with their calcium carbonate content, serve as a natural pH buffer, aiding in neutralizing acidic soils and, consequently, enhancing nutrient availability for plants. The aim of this study was to evaluate the effect treating mussel shells soil amendment on agronomic characteristics and productivity Rosmarinus officinalis. A pot experiment set up two growing years. treatments were amended using different doses shells. Overall, following: C: unamended (control); T1: 0.1%; T2:...

Abstract Background The Indo-Pacific sea urchin Diadema setosum has invaded the Mediterranean Sea and spread along many locations in southeastern part of basin, where established populations exist on shallow subtidal rocky shore. is a ubiquitous species, particular ecological importance due to high levels grazing pressure it imposes benthic communities. Its biology, however, not adequately studied, especially its introduced range distribution. present study examines population status D....

Admixture and hybridization may play a key role in population dynamics speciation with respect to habitat, demographic history, adaptive selection. The present study examines the genetic diversity of two congeneric—but different subgenera—holothurians that live sympatry mixed populations. Strong evidence admixture was provided by analyzing RAD sequencing data from 90 67 individuals Holothuria (Holothuria) tubulosa (Roweothuria) poli, respectively, various areas Hellenic Seas (eastern...

The aquatic environment is a reservoir of many species that have not yet been exploited at global level and extensively investigated. aim the present work was to study microbial populations, bacterial communities physicochemical parameters (pH, water activity, humidity, salinity) in raw, frozen, boiled, dehydrated salted final products two sea cucumber (Holothuria polii Holothuria tubulosa) originating from Hellenic seawaters. results indicated all were found acceptable levels...

The development of skeletal deformities in seabream farming affects fish growth, survival, and production costs. Collagen distribution different tissues might be correlated with swimming behavior. This study investigates whether scoliosis seabreams is associated changes to calcium-phosphor hydroxyapatite salts collagen fibril morphology. Samples decalcified vertebrae scoliotic non-scoliotic were examined transmission electron microscopy micrographs taken analyzed. mineral content, modulus...

This study fulfils a need for investigation of quality profile snail fillets. Edible snails are famous food product consumed worldwide and treated as delicacy. Nutritional value, colour textural properties, such hardness, critical factors that impact consumer acceptance the product. Hardness meat is affected by its native original microstructure.Fresh farmed species Cornu aspersum maximum, wild Helix lucorum were used in order to investigate qualitative meat. Proximate composition, hardness...

Sea cucumbers have become a highly valuable fishery product, and therefore the determination of their proximate compositions fatty acid profiles are useful indicators physiological status nutritional value. Thus, various raw processed products, such as raw, dried, frozen, boiled, salted Holothuria polii tubulosa that were collected from Aegean analyzed. Although there some notable differences in between two species among processing forms, both H. had high They rich proteins (up to 68.5%...

The Atlantic pearl oyster, Pinctada radiata (Leach, 1814), is an Indo-Pacific bivalve of the subtidal zone that has colonized habitats all over Mediterranean. There a lack detailed information on reproductive activity P. in Hellenic waters, especially following recent amendment national legislation aiming to regulate fishery and prevent illegal fishing trafficking as substitute for indigenous oysters. A total 703 individuals were collected by scuba diving from southwest part Evia Island....

The sustainable management of aquaculture by-products is crucial for advancing circular economy practices. Mediterranean mussel shell waste, rich in calcium carbonate, presents a alternative to conventional liming materials, especially mitigating soil acidification, very important and common issue that limits crop productivity. This study evaluated the effectiveness processed waste enhancing pH, organic matter, nutrient availability. A 180-day pot experiment using highly acidic (pH < 4.5)...

The aim of this research is to study the seasonal histological changes in digestive gland males and females Nephrops norvegicus at Pagasitikos Gulf. food availability Gulf varies depends on seasonality, physicochemical conditions diversification organic material. After obtaining sections, size tubules, their lumens R-, F- B-cells were calculated March May. A special image analysis algorithm was used that can automatically calculate both above area ratios using sections. Both male female,...

Coalescent methods in population genetics aim to detect biodiversity patterns, evolutionary mechanisms, and signatures of historical changes effective sizes with respect the species fidelity. Restriction site-associated DNA sequencing (RADseq) was used evaluate dynamics invertebrate within same localities. New technologies, such as ones employed by genetics, could be improve management sustainability marine aquaculture resources. Sea cucumbers (Holothuria tubolosa) showed genetic...

Aquaculture by-products can be compromised an important liming material of increasing soil pH and fertility. The aim this research was to assess the effect mussel shells on pH, organic matter nutrients. In study a pot experiment carried out at De-partment Ichthyology Aquatic Environment (University Thessaly, Greece). A acidic (pH 4.26) amended with 6 different proportions shell (0.0, 0.1, 0.3, 0.5, 1, 3 6%) in two grain sizes (Fine powder (>1 mm) Coarse (1-2 mm)), resulting 13...

Holothurians are prominent marine organisms in benthic ecosystems, exploited as food for centuries and, recently, nutraceuticals. Moreover, they constitute a significant source of beneficial and medicinally valuable metabolites that have anticancer properties. Hypoxia, or low oxygen levels, the stimulation HIFs result rapid cell proliferation restricted blood supply characteristics shared by majority cancers, which give them resistance to standard treatment. The present study examines effect...

The reproductive biology of the invasive blue crab Callinectes sapidus was studied in Thermaikos Gulf (Northwest Aegean Sea, Eastern Mediterranean). In two-year survey 5,698 (2,897♂/ 2,801♀) crabs were caught with use fyke nets. Total sex ratio (♂/♀) reached equality (1.03:1). female exhibited a protracted period. Mature and ovigerous females exhibit short migratory movements from estuarine inshore waters, where population mostly congregates (0-3 m), move to slightly deeper waters (1-3 m) up...

The reproductive biology of the invasive blue crab Callinectes sapidus was studied in Thermaikos Gulf (Northwest Aegean Sea, Eastern Mediterranean). In two-year survey, 5698 (2897♂/2801♀) crabs were caught with use fyke nets. Total sex ratio (♂/♀) reached equality (1.03:1). female exhibited a protracted period. Mature and ovigerous females exhibit short migratory movements from estuarine inshore waters, where population mostly congregates (0–3 m), move to slightly deeper waters (1–3 m) up 9...

In order to investigate the quality characteristics of boiled snail fillets, microstructure fillets farmed Cornu aspersum maximum was studied for first time. The cylindrical specific mid-posterior region used hardness measurement with geometry 6 mm diameter and height. Histological analysis proved that this uniform measurements on part could show difference between wild species without variations from environmental breeding conditions. addition, values showed a strong relationship...

A fishery-independent survey with a commercial bottom otter trawl was conducted in the Pagasitikos Gulf, semi-enclosed, trawl-restricted gulf Greece. The study aimed to ecologically assess fishery communities that are experiencing decline landings. Twelve hauls of 30 min duration each were eastern, western, and central parts at depths between 62 97 m. In total, 57 species captured, highest number recorded west (35 species), followed by center (32 species) east (29 species). numerical...

Size limitations are commonly applied as regulatory measures for the sustainable management of marine invertebrate fishery resources. However, setting biologically meaningful size limits in holothurians is puzzling, due to limited knowledge their biology and great plasticity weight, owing increased contractibility body, large quantity variability coelomic fluid. To evaluate efficiency official Hellenic regulation, biometry exploited species, i.e., H. tubulosa, poli, mammata, sanctori, was...