Mariusz R. Sapota

Mariusz R. Sapota
University of Gdansk | UG · Department of Marine Biology and Ecology Institute of Oceanography

Professor

About

38
Publications
7,995
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833
Citations
Citations since 2017
9 Research Items
352 Citations
20172018201920202021202220230102030405060
20172018201920202021202220230102030405060
20172018201920202021202220230102030405060
20172018201920202021202220230102030405060

Publications

Publications (38)
Poster
Full-text available
There are 32 non-indigenous fish species in the Baltic Sea. However, only two species can be treated as invasive ones. Only round goby and Prussian carp are ecologically important and they have changed significantly the food web in occupied areas. Fish from other non-indigenous species are noticed, sometimes numerously, but no ecological importance...
Article
Full-text available
Otoliths are bony structures inside the fish labyrinth. They are used to determine the age of fish and to identify species based on their remains. The objective of this study was to describe the shape of otoliths in adult European perch ( Perca fluviatilis ), Atlantic herring ( Clupea harengus ), European sprat ( Sprattus sprattus ), lesser sand ee...
Article
The sand lances (also known as sand-eels) are small fish belonging to family Ammodytidae that consists of 31 species belonging to 7 genera. Despite world-wide distribution, key role in the ecosystems and significant commercial importance, sand lances have rarely been objects of the cytogenetic studies. The chromosomes of small sand-eel (Ammodytes t...
Poster
Full-text available
Celem pracy było określenie parametrów morfologicznych krwi ryb oraz ustalenie prawidłowej metodyki wykonywania analizy morfologicznej krwi ryb. Otrzymane wyniki jednoznacznie wskazują na istnienie różnic w liczbie erytrocytów, leukocytów i trombocytów we krwi różnych gatunków ryb. Liczba krwinek różni się również między osobnikami w obrębie jedn...
Chapter
Indonesia is an archipelago country, which has big fisheries resources. The fisheries sector has contributed 3% of gross domestic product (GDP) in 2012. More than 80% of Indonesian fish catches are from small-scale fishery. Hence, it is crucial to investigate the performance of small-scale fisheries in relation to the sustainable fish exploitation....
Article
Studies of cyanobacterial bloom dynamics show that the highest biomass accumulation of Nodularia spumigena is observed in the shallowest area of the Gulf of Gdańsk in summer. In the same region and time, the highest fish abundance is observed. Mostly young individuals of gobies, small sandeel, flounder, three-spine stickleback and young herring occ...
Chapter
1. The term “non-indigenous species ” (NIS) represents a biogeographical category, which indicates human involvement in the introduction of a certain species to a particular ecosystem and has nothing to do with putting “good” or “bad” tags on these species. 2. A biological invasion is the spread of a NIS or a cryptogenic species (of uncertain or un...
Article
Full-text available
The three spine stickleback Gasterosteus aculeatus is a small omnivorous, wildly distributed fish. In this study, food uptake and body condition of three spine stickleback, from the Gulf of Gdansk eulitoral was investigated. Samples were taken from three locations of the Gulf of Gdańsk: in vicinities of Sopot, Chałupy and Hel. Copepods were the mos...
Article
ContentsGynogenetic and androgenetic brown trout (Salmo trutta Linnaeus 1758) haploids (Hs) and doubled haploids (DHs) were produced in the present research. Haploid development was induced by radiation-induced genetic inactivation of spermatozoa (gynogenesis) or eggs (androgenesis) before insemination. To provide DHs, gynogenetic and androgenetic...
Article
Full-text available
The round goby was noted for the first time in the Gulf of Gdańsk in 1990. After a few years, the round goby had invaded all suitable areas in the west part of the Gulf of Gdańsk. Generally, the sandy bottom was the factor that do not prevent the fish invasion. The effectiveness of reproduction is one of the most important factors in deciding the s...
Article
Full-text available
Straightnose pipefish (Nerophis ophidion), covered with hydroid Gonothyraea loveni, were caught in August 2010 near Gdynia while fishing with fyke nets. The hydroid colonies were spaced around the fish, from the head to the anus. These colonies seemed to cause serious problems with the balance and swimming ability of the fish. It appears that there...
Article
Full-text available
Twaite shad Alosa fallax (12–48 cm total length) from the Gulf of Gdansk feed on Mysids: Mysis mixta, Neomysis integer, and fish: Sprattus sprattus, Osmerus eperlanus, and Pomatoschistus sp.. In the stomachs of A. fallax there also occur Hydrobia sp., Diptera and small stones, particles of wood and plastic. The food of inshore twaite shad measured...
Article
Karyotype and cytogenetic characteristics of the invasive round goby (Neogobius melanostomus (Pallas, 1814)) from the population inhabiting the Gulf of Gdansk, Baltic Sea, Poland were investigated using conventional and molecular cytogenetic techniques. The diploid chromosome number of all samples was 2n= 46 and the karyotype consisted of subteloto...
Conference Paper
Full-text available
The goals of this study were (1) to describe the gonad structure of round goby at the size range from 20 to 180 mm, (2) to determine type of sex differentiation and (3) fish size when process of gonads' maturation is terminated. We examined 30 fish at 20–56 mm of total body length (TL) and body mass ranging from 67.6 to 1677.3 mg, and 5 fish of 91....
Article
Full-text available
Trophic interactions between preadult and adult Pomatoschistus minutus and Pomatoschistus microps and young Platichthys flesus occurring in inshore waters of the Gulf of Gdańsk (Southern Baltic) We intended to estimate if shallow inshore waters of the Gulf of Gdańsk can be considered important feeding grounds for the fishes under investigation. We...
Article
Full-text available
The broad-nosed pipefish ( Syngnathus typhle ) is a species considered threatened with extinction on the Polish Baltic coast. The presence of S. typhle in the Gulf of Gdańsk was investigated primarily by means of scuba diving, and the species was recorded at 12 of 20 sites, which were investigated. A total of 85 individuals were found. The highest...
Article
Full-text available
The fecundity and gonad development cycle of the round goby (Neogobius melanostomus Pallas 1811) from the Gulf of Gdańsk Abstract The round goby (Neogobius melanostomus Pallas 1811) is a non-native species in the Gulf of Gdańsk. The aim of this article is to assess the absolute fecundity and attempt to describe the gonad development cycle of round...
Article
The round goby (Neogobius melanostomus) was first noticed in the Gulf of Gdansk in 1990. This Ponto-Caspian fish was most likely introduced to the Baltic environment from ships ballast water. During the first years of invasion, slow population growth was observed in the initially colonized regions. From 1994, round goby gradually spread in all shal...
Article
The reproduction aspect of the biology of Pomatoschistus minutus was investigated on fish collected in the Gulf of Gdańsk from March to October 2002. The study zone was from the shore to a depth of about 1 m. The sand goby is common in the investigated area from July to October, but it migrates to deeper water in the colder months. The highest numb...
Article
Full-text available
A study was conducted from 2001 to 2003 in the Gulf of Gdańsk (Poland) on the diel food composition and diel and seasonal changes in the feeding activity of Pomatoschistus minutus, Pomatoschistus microps, and Platichthys flesus. During the three-year study, no empty fish stomachs were noted, and the fish food was comprised exclusively of prey speci...
Article
Full-text available
Sand and common goby specimens were collected from the costal waters in the vicinity of Sopot and Chałupy (Gulf of Gdańsk) from August to October. The relationship between the food consumed and the fish condition was investigated for both species using the Fulton and Clark factors, HSI, feeding intensity, and the index of relative importance. The r...
Article
In the Polish costal zone of the Baltic Sea two similar looking gobies - sand goby and common goby occur. In quantitative investigation both species are often taken as an one, because of difficulties in distinguish them. There are a few methods to differentiate sand goby and common goby - body pigmentation, shape of head and pigmentation of a splee...
Article
Full-text available
During the past decade, a bottom-dwelling, aggressive, multiple-spawning fish, the round goby (Gobiidae: Neogobius melanostomus), has spread from its native region in the Ponto-Caspian throughout Europe and to the Laurentian Great Lakes in North America. An international workshop, held at the Hel Marine Station, Poland, was organized to summarize p...
Article
In recent years, information concerning the awareness of organisms accidentally introduced into the Baltic Sea has substantially improved. Non-indigenous Estuarine and Marine Organisms (NEMO's) are hazardous for the Baltic ecosystem. Currently, about one hundred species are identified as accidentally or intentionally introduced into the Baltic Sea....
Article
Over the last 20 years, more and more reliable data concerning global climate change, mainly climate warming, have become available in the literature. Change such as this has also been documented in the Gulf of Gdañsk. Climate change has an influence on aquatic ecosystems and especially their biocoenoses, and plankton is one of its most sensitive e...
Article
A total of 999 specimens of Siganus rivulatus were collected from trash catches of small beach seine operating in the Port Said fishing harbour at the entrance of the Suez Canal during the period from January to December 1997. The species constituted 20.1% of the trash catch and about 4 - 5% of the total catch of the gear. The juveniles of S. rivul...
Article
The trash catch of the Egyptian Mediterranean small beach seine operating in Port-Said fishing harbour at the entrance of the Suez Canal during the period from January to December 1997 was analyzed. It amounted about 3-5 kg per haul composed of three categories: juveniles of commercially important species (76.6%), low-valued small size fish species...
Article
A total of 861 specimens of Sardinella aurita were collected from monthly trash catches from a trawling net operating on the Port Said coast on the Mediterranean Sea from January to December 1997. The species constituted 17.9% of the trash catch and about 3% of the total catch of the gear. The juveniles of S. aurita stayed at the nursery grounds fr...
Article
The trash catch of an Egyptian Mediterranean trawling net was analyzed. The catch amounted to approximately 15-20 kg per haul, composed of three categories: Juveniles of commercially important species (86.5%), Low-value small size fish species (5.5%) and non-edible species (7.9% of the total trash catch). In the catch, 35 species were identified re...
Article
Presence of fish from 10 species was confirmed in shallow close to shore waters on the tip of the Hel Peninsula, in period from early spring to late autumn. Zone from shore to 5 meter depth was investigated. The highest number and biomass were noticed in summer on 3 meter depth. As general biodiversity taking into account number increases with incr...
Article
During 1990, whole-year investigations on the cycle of maturity and early life history of Notothenia coriiceps were carried out. All collected material (ichthyoplankton samples and adult fish) originated from Admiralty Bay, King George Island, South Shetlands. Development of the gonads of N. coriiceps starts in February. Spawning takes place in May...
Article
On a basis of whole year monthly sampling, the abundance of the flounder in inshore shallow waters of the western part of the Gulf of Gdansk was established. Flounders were observed almost all year. Only in winter, when sea ice forming processes occurred, they disappeared from the investigated zone. The highest abundance of the flounder was noticed...
Article
The age and rate of growth of the flounder from inshore shallow waters of the Gulf of Gdansk (from shore to 1-m depth) have been investigated. Mainly the flounder from 0 and 1 year age group exists in this zone. Flounders from 0-year age group enter shallow waters of the Gulf of Gdansk in June or July. They stay in this area till the end of the yea...

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Projects

Projects (2)
Project
To finish my PhD study in Fisheries Resources Sustainability at University of Gdansk, Poland. I get Ignacy Łukasiewicz Scholarship from cooperation between the Ministry of Foreign Affairs and the Ministry of Science and Higher Education of the Republic of Poland during my PhD study.
Project
Seasonal and daily variation of size and structure of fish comunity inhabiting shallow, inshore marine waters. Dynamics of populations, fish migration, spawning and nursery grounds.