
Panagiotis BerillisUniversity of Thessaly | UTH · Department of Ichthyology and Aquatic Environment (DIAE)
Panagiotis Berillis
Ph.D
About
81
Publications
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Introduction
Panagiotis Berillis has a degree in Physics and a PhD in Biophysics. He is an Associate professor at the University of Thessaly - Department of Ichthyology & Aquatic Environment. He has published over 82 papers in scientific journals and conference proceedings. His research interests are focused on the histology of aquatic organism, image analysis, collagen, apoptosis, necrosis, and tissue mechanical properties.
Additional affiliations
February 2020 - present
January 2015 - February 2020
January 2011 - January 2015
Publications
Publications (81)
The use of Mediterranean euryhaline fish and halophytes in aquaponics presents a sustainable and alternative approach to food production. The present study investigates the effect of compensatory growth on sea bass (Dicentrarchus labrax) and Baltic prawn (Palaemon adspersus) co-cultivated with the halophytic glasswort (Salicornia europaea). Three a...
The aim of this study was to evaluate the effect of starvation and refeeding on the growth and food intake of gilthead seabream ( Sparus aurata ) and seabass ( Dicentrarchus labrax ) and on the growth and nitrogen uptake of glasswort ( Salicornia europaea ) in a polyculture aquaponic system under 12 ppt salinity for 75 days. Nine small-scale autono...
The aim of this study was to investigate the growth performance of gilthead sea bream (Sparus aurata) fed with a mixture of a single cell ingredient (SCI) (bacterial protein, yeast protein and algae) for organic aquaculture. Sea bream with an initial mean body weight of 6.87±0.07 g were randomly allocated to 250-litre tanks. Four iso-nitrogenous, i...
Single-cell ingredients (SCI) are considered promising nutrient sources which are produced using environmentally friendly biotechnological processes. The aim of the current study was to evaluate the replacement of fishmeal, plant protein sources, and fish oil with SCI in organic feeds for European sea bass (Dicentrarchus labrax). Bacterial protein,...
The possibility of simultaneous production of halophyte and euryhaline fish creates huge interest in both commercial aquaponics systems and in research. The aim of the present study was to investigate the effect of three different salinities (8, 14, and 20 ppt) on the growth performance and survival rate of sea bream (Sparus aurata) and rock samphi...
Brackish aquaponics using euryhaline fish and halophyte plants may be a sustainable method of functional food production. In addition, they could have a great potential as high nutritional, commercial and pharmaceutical value. This study investigated the effect of three different salinity levels (8 ppt, 14 ppt and 20 ppt) on the growth performance...
The aim of this study is to investigate the effect of 10 and 20% replacement of fishmeal (FM dietary group) with the superworm Zophobas morio larvae meal (ZM10 and ZM20 dietary groups) on the growth performance of sea bass (Dicentrarchus labrax) and lettuce plants (Lactuca sativa) reared in aquaponics. Ninety juvenile sea bass with an average body...
Haematological parameters are frequently used as physiological indicators in aquaculture studies. These parameters also have extended applications in clinical evaluation, diagnosis and prognosis in fish health status. However, no normal reference range of values has been demonstrated in depth for any of these haematological parameters for the Europ...
Histopathology is the study of changes in any tissue associated with a disease or disorder [...]
Herein we investigated the cellular responses of the endemic fish species Alburnus vistonicus Freyhof & Kottelat, 2007, under the variation of several physico-chemical parameters including temperature (°C), salinity (psu), dissolved oxygen (mg/L), pH and conductivity (μS/cm), which were measured in situ. Monthly fish samplings (October 2014–Septemb...
The sea bass is one of the most important species of the Mediterranean, and especially of Greece. Individuals with
different number of vertebrae have been reported. This number ranges from 24, 25 to 26 vertebrae. In this study a
sample of 73 individual of sea bass were collected from fish farms and divided into three age groups. The first
group...
The effects on liver and intestinal histomorphology and on intestinal microbiota in gilthead seabream (Sparus aurata) fed diets that contained poultry by-product meal (PBM) and hydrolyzed feather meal (HFM) as fishmeal replacements were studied. Fish fed on a series of isonitrogenous and isoenergetic diets, where fishmeal protein of the control die...
Aquaponics provides an alternative opportunity for the combined production of fish and plants. Most of the essential nutrients required for optimal plant growth can be supplied from the fish feed, except for K and Fe. These nutrients are usually inadequate in fish feed. In this study, red tilapia and rocket plants were co-cultivated in an aquaponic...
The aim of this study is to investigate the effect of three daily fish feeding frequencies, two, four and eight times per day (FF2, FF4, and FF8, respectively) on growth performance of sea bass ( Dicentrarchus labrax )and lettuce plants ( Lactuca sativa ) reared in aquaponics. 171 juvenile sea bass with an average body weight of 6.80 ± 0.095 g were...
Irrigation water coming from freshwater bodies that suffer toxic cyanobacterial blooms causes adverse effects on crop productivity and quality and raises concerns regarding food contamination and human exposure to toxins. The common agricultural practice of spray irrigation is an important exposure route to cyanotoxins, yet its impact on crops has...
The European seabass is one of the most important species of the Mediterranean, specifically Greece. Individuals with different numbers of vertebrae have been reported. This number ranges from 24 to 26 vertebrae. In this study a sample of 73 individual seabass were collected from fish farms and divided into three age groups. The first group include...
Brackish aquaponics using Mediterranean fish and plants provides an alternative opportunity for a combined production of high-quality food products with high commercial and nutritional value. This is the first study that investigates the effect of two different salinities (8 and 20 ppt) on growth and survival of Sparus aurata and Crithmum maritimum...
The development of skeletal deformities in seabream farming affects fish growth, survival, and production costs. Collagen distribution in different fish tissues might be correlated with swimming behavior. This study investigates whether scoliosis in seabreams is associated with changes to calcium-phosphor hydroxyapatite salts and collagen fibril mo...
The development of skeletal deformities in seabream (Sparus aurata) farming affects their growth, survival and production costs. Research has shown that the distribution of collagen in different fish tissues might be correlated to their swimming behavior. This study investigates whether gilthead seabream with scoliosis deformity showed collagen mor...
Aquaponics combines the culture of aquatic animals and the cultivation of plants in recirculating systems, integrating aquaculture and hydroponics in a soil-less system. The present study aims to evaluate the relationship between water quality parameters and fish and plant growth in an aquaponics system. Two aquaponics systems, 720L total water cap...
Replacement of fishmeal and fish oil in fish diets is still a major issue for aquaculture. Some microalgae species seem to be suitable alternatives due to their high protein content and richness in EPA and DHA. Histological studies on liver of gilthead seabream, Sparus aurata were conducted in order to evaluate the possible alterations produced by...
The overall objective of FutureEUAqua is to effectively promote sustainable growth of resilient to climate changes, environmentally friendly organic and conventional aquaculture of major fish species and low trophic level organisms in Europe, to meet future challenges with respect to the growing consumer demand for high quality, nutritious and resp...
Cyanotoxin-rich irrigation water was applied by spraying and root irrigation on spinach (Spinacia oleracea L.) and the effect on growth and toxin loading in the edible tissues, subsequently health risk, was investigated. The degraded water was collected from the Karla Lake, Central Greece, which is characterised by eutrophic conditions and increase...
Chitinolytic bacteria are widespread in marine and terrestrial environment, and this is rather a reflection of their principle growth substrate’s ubiquity, chitin, in our planet. In this paper, we investigated the development of naturally occurring bacterial biofilms on the exoskeleton of the shrimp Melicertus kerathurus during its degradation in s...
Aquaponics combines the culture of aquatic animals and the cultivation of plants in recirculating systems, integrating aquaculture and hydroponics in a soil-less system. The present study aims to evaluate the relationship between water quality parameters and fish and plant growth in an aquaponics system. Two aquaponics systems, 720L total water cap...
The progressive ability of a six-strains L. monocytogenes cocktail to form biofilm on stainless steel (SS), under fish-processing simulated conditions, was investigated, together with the biocide tolerance of the developed sessile communities. To do this, the pathogenic bacteria were left to form biofilms on SS coupons incubated at 15°C, for up to...
Trends in Fisheries and Aquatic Animal Health
https://ebooks.benthamscience.com/book/9781681085807/
Fish and other seafood have always been considered as an important part of human diet and have also long been recognized as a health-promoting food for human nutrition. However, managing aquatic food resources remains a challenge as the human popula...
Histophysiology of Fish and Crustaceans
The aim of this research is to study the seasonal histological changes in the digestive gland of males and females Nephrops norvegicus at the Pagasitikos Gulf. The food availability in Pagasitikos Gulf varies and depends on the seasonality, physicochemical conditions and diversification of organic material. After obtaining histological sections, th...
In search of alternative and safer sources of collagen for biomedical applications, the marine demosponges Axinella cannabina and Suberites carnosus, collected from the Aegean and the Ionian Seas, respectively, were comparatively studied for their insoluble collagen, intercellular collagen, and spongin‐like collagen content. The isolated collagenou...
Kalymnos island is the last bulwark of the sponge fishery. The economy of the island was based almost exclusively on the harvesting and treatment of commercial species of sponges. Nowadays, 30 years after the desertification of all the sponge fishing grounds, the populations recover even in shallow waters (5–15 m) where the species Spongia (Spongia...
The softness, the elasticity and the resistance are important parameters in order to define the commercial value of the sponges. Physical parameters as tensile strength, module of elasticity and the chemical composition can strongly be correlated with sponges' commercial value. The aim of this study is to determine the tensile strength, the module...
The present work aimed to study the cellular responses and the histological lesions in the gills of the endemic freshwater fish species Alburnus vistonicus, under the variation of some environmental parameters in Lake Vistonis. Monthly fish sampling was conducted in the lake, within one year period (October 2014-September 2015), by Nordic multi-mes...
The digestive gland in decapods crustaceans is responsible for metabolic activities such as synthesis, secretion of digestive enzymes and overall contributes to the digestion of food. It consists of many microtubules and in its digestive epithelium five types of cells can be recognised: the E-cells, R-cells, F-cells, B-cells and M-cells. The morpho...
An air diffusion based system (Airx) was
developed to control the dissolved oxygen levels in
aquaculture sea cages. The system was introduced and
then tested for 37 days in a sea bass sea cage (aerated
cage). A second sea bass sea cage, without the AirX,
was used as a control. Oxygen levels were measured
in both cages at the start of the trial, bef...
Kalymnos island is the last bulwark of the sponge fishery. The economy of the island was based almost exclusively on the harvesting and treatment of commercial species of sponges, mainly the species Spongia officinalis officinalis (Linnaeus 1759) & Hippospongia communis (Lamark,1813). Since 1522 by the Sultan Suleiman the Magnificent; the island ha...
We studied the development of bacterial biofilm in cigarette filter tips after their exposure to seawater.
An air diffusion based system (AirX) was developed for control of dissolved oxygen levels in aquaculture sea cages. The study aimed to reveal differences in the size of erythrocytes and differentiation of leucocytes in fish kept in sea cages with the AirX aeration system and without the AirX system. The system was introduced and tested for 37 days...
Skeletal deformities of gilthead seabream (Sparus aurata) are a major factor affecting the production cost, the external morphology and survival and growth of the fish. Adult individuals of S. aurata were collected from a commercial fish farm in Greece and were divided into two groups: one with the presence of lordosis, a skeletal deformity, and on...
HISTOLOGIJA CREVA PASTRMKE (ONCORhYNChUS MYKISS) PRE I POSLE OBROkA Apstrakt Peharaste ćelije se nalaze u crevu riba, one sintetišu neutralne i sulfatne mucine i izluču-ju sluz, podmazujući nesvareni materijal koji napreduje prema rektumu i štiteći sluzokožu digestivnog trakta. Promene u peharastim ćelijama creva riba posle obroka mogu pokazati odg...
Collagen is the main protein of the connective tissue and its molecule is formed by three polypeptide strands, named alpha chains. The most common motifs in the amino acid sequence of collagen are Gly-Pro-X and Gly-X-Hyp. Collagen can be extracted from a variety of organisms. The use of cattle as the main source for collagen has been reconsidered b...
Skeletal deformities are a major factor that downgrade hatcheries’ production and affects the production cost. Scoliosis, kyphosis, lordosis, jaw malformations and deformities of the branchial arches are some of them. Skeletal deformities in fishes are not well understood. Many factors may be related with the development of these deformities in fis...
Skeletal deformities of Gilthead seabream (Sparus aurata) is a major factor that effects the production cost, the external morphology of the fish as well as its survival and growth. Adult individuals of S. aurata were collected from a commercial fish farm and were divided into two groups. One with the presence of lordosis and one without any skelet...
Lake Karla, Greece, is a partially reconstructed lake. The lake’s water filling process started in September 2009. Existing evidence based on the prevailing microorganisms and cyanotoxin levels in the lake in 2010 suggested that the lake could have a negative effect on its biota. By investigating whether Carassius gibelio individuals bear brain and...
Anthropogenic chemicals in the environment during critical periods could potentially affect the physiology of the economically valuable American lobster (Homarus americanus). Endosulfan (Thiodan™ WP) is a broad-spectrum organochlorine insecticide widely used in agricultural areas in Canada that significantly affects survival and growth of lobster l...
Different groups of N. norvegicus were fed either frozen mussel flesh, a pelleted diet and compared to starved individuals. Feed consumption was recorded for ten weeks, and the lobsters were raised for another ten weeks to determine the effect of diet on survival, moulting, body nutrient composition and digestive gland histology for a prolonged per...
The reconstructed Lake Karla, Greece, has been undergoing its water-filling period since November 2009. In this paper, we aimed at investigating whether the unicellular eukaryotes, including the toxic/parasitic ones, that have been found during mass fish kills in the lake (March–April 2010), persist during the first warm period of the lake (May, Au...
The occurrence of heavy cyanobacterial blooms has become a worldwide problem, as a consequence of eutrophication of the aquatic ecosystems; furthermore, 60% to 75% of these blooms have been found to be toxic. Microcystins (MCYSTs), the predominant toxins of cyanobacterial blooms, are associated with mortality and illness in both animals and humans....
Aorta is the largest artery in the body. Anatomically, it is traditionally divided into the ascending, the aortic
arch, the descending, the thoracic and the abdominal aorta. Collagen is one of the most important components of the aortic wall. Its concentration and its total amount play a significant role in the aortas’ function and mechanical prope...
Body weight, shell’s diameter, shell’s’ thickness, shell’s mechanical strength and chemical composition of the hypostracum of reared and wild snails (Cornu aspersum) were analyzed. Wild adult individuals were collected from Crete (Greece) and compared with adult individual snails reared under laboratory conditions. Α standard layer diet supplemente...
The liver is a target organ for applying nutritional research studies. The aim of the present study is to determine the effects of different fish diets in Sparus aurata’s liver morphology. S. aurata were fed the experimental diets for 41 days. Tissue liver samples were obtained from three fish of each dietary treatment, fixed, dehydrated and embedd...
The digestive gland of crustacean is involved in various metabolic activities, including the synthesis and secretion of digestive enzymes that begin the process of food digestion, intracellular digestion and absorption of nutrients, storage of reserves, and disposal of waste products. It consists of two glandular lobes which extensively subdivide t...
Muscular tissue collagen fibrils’ diameter and period of reared and wild snails (Cornu aspersum) were measured in order to investigate the role of nutrition on the collagen. Wild adult individuals were collected from Crete (Greece) and compared with adult individual snails reared under laboratory conditions fed a formulated diet. Transmission elect...
The aim of the present study was to assess the effect of different dietary calcium levels on growth and shell hardness of Helix aspersa. Three hundred snails of mean body weight 0.32±0.03 g and mean shell diameter 9.6±0.2 mm, were randomly distributed into four dietary groups and stocked in 12-8 L plastic containers (25 specimen per container, 3 re...
The digestive gland is involved in various metabolic activities, especially in the synthesis and secretion of digestive enzymes that begin the process of food digestion. In invertebrates, it is the organ which completes the process of food digestion and in which the absorption of nutrients takes place to a greater extent than in the gut. It consist...
Lake Karla was an area of approximately 180 Km2 before it’s desiccation in 1962. Over the last decade, different projects have been taken in the area for partially recreation of the lake and the implementation of this project has already begun. The new lake “Karla” will be approximately 38Km2, therefore, it is a unique lake ecosystem for study in t...
This study aims to measure liver collagen fibril diameter in cultured and wild sea breams (Sparus aurata). Cultured sea breams were fed three isonitrogenous diets. The organically produced feed contained sustainable certified fish meal (45%), fish oil (14%), and organic certified wheat; the laboratory feed contained fish meal (45%), fish oil (14%),...
The radon is an inert gas, which is produced at the radioactive de-energize of uranium-238 and exists in the air of countryside and closed spaces. Extensive epidemiologic researches in workers of mines and experimental data from studies in animals showed that the radon causes cancer of lungs. Also it is considered that it is possible to constitute...