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Living things are in constant contact with each other and with the physical environment in which they live. They are part of the study of ecology. This science, as a method of analysis allows to observe each element of an ecosystem and at the same time how it is able to affect other components of the same ecosystem and how this is affected. It is a science of synthesis, so that to understand the complexity of relationships in an ecosystems, it is necessary to take advantage of the knowledge of botany, zoology, physiology, genetics and other disciplines such as physics, chemistry and geology. Ecology has reached enormous significance in recent years. The lack of green spaces, overcrowding, excessive smoke and heat produced by different machines like the acoustic and visual pollution, makes the city has an adverse environment. For this reason, it is intended to raise awareness of the damage we are causing to our planet; also getting tools to avoid a larger decline in our environment., Los seres vivos están en permanente contacto entre sí y con el ambiente físico en el que viven, y son parte del estudio de la ecología. Esta ciencia, como método de análisis, permite observar cada elemento de un ecosiste- ma, de cómo es capaz de afectar a los demás componentes y de cómo se ve afectado este. Es una ciencia de síntesis, para comprender la compleja trama de relaciones que existen en un ecosistema toma conocimientos de botánica, zoología, fisiología, genética y otras disciplinas como la física, la química y la geología. La ecología ha alcanzado enorme trascendencia en los últimos años. La falta de espacios verdes, la superpoblación, exceso de humo y calor producidos por diferentes máquinas al igual que la contaminación acústica y visual, hace que la ciudad tenga un ambiente adverso. Por esta razón, se pretende crear consciencia del daño producido al planeta y obtener herramientas que eviten un retroceso más grande del medio ambiente.

During tilapia production cycle (six months), mushrooms, green fodder and cucurbits were conducted in an aquaponic system to evaluate their efficiency in the removal and use of nitrogenous waste. For the study, a recirculation system of three circular tanks of 7m³ was used, where 64 tilapias per m³ (0.35 ± 0.18 g) were stocked. During the first phase, three mushroom cultivation cycles of 20 d were developed in two systems: Aquaponic and traditional irrigation. Subsequently, six 12 d of growth cycles for green fodders (yellow and white maize, wheat and sorghum), and finally one 45 d cucumber and watermelon bicultivation cycles were done. The total cumulative mushroom production in the aquaponic treatment during the three cycles was 16 % higher than the obtained in the traditional treatment. Most of forage production in total fresh biomass was obtained with wheat (47.55 kg), however The higher length in the stems (27 ± 2.20 cm) and the greater nitrogen metabolite removal efficiency were achieved with white maize. The cucumber and watermelon plants produced fruits until the second month of culture with total yield of 27.15 kg and 4.84 kg, respectively, and also they are the most efficient to leverage metabolites versus mushrooms and fodder. With the above results, it can be concluded, that during the tilapia production, it is possible to grow various vegetables, and take advantage of nitrogenous metabolites by aquaponic practices., En un ciclo de producción de tilapia, se realizó el cultivo de hongos setas, forrajes verdes y cucurbitáceas en un sistema acuapónico, con el objetivo de evaluar la eficiencia en la remoción y aprovechamiento de desechos nitrogenados. Para el estudio se usó un sistema de recirculación de tres tinas circulares de 7 m³, en las que se sembraron 64 tilapias por m³. En la primera fase, se mantuvieron tres ciclos de cultivo de setas de 20 d, en dos sistemas: acuaponía y riego tradicional. Posteriormente, se realizaron seis ciclos de 12 d de crecimiento de cuatro forrajes verdes: maíz amarillo y blanco, trigo y sorgo, para luego realizar un ciclo de 45 d de pepino y sandía en bicultivo. La producción acumulada total de setas en el tratamiento de acuaponía durante los tres ciclos fue 16 % superior al obtenido con riego tradicional. La mayor producción de forraje en biomasa total fresca se obtuvo el trigo (47.55 kg); la mayor longitud de tallos (27 ± 2.20 cm) y eficiencia de remoción de metabolitos nitrogenados en el maíz blanco. Las plantas de pepino y sandía produjeron frutos al segundo mes de cultivo, con rendimiento de 27.15 y 4.84 kg, respectivamente, las cuales fueron más eficientes en aprovechar los metabolitos que las setas y los forrajes. En el ciclo de producción producción de tilapia se puede cultivar diferentes vegetales y aprovechar los metabolitos nitrogenados con acuaponía.

During tilapia production cycle (six months), mushrooms, green fodder and cucurbits were conducted in an aquaponic system to evaluate their efficiency in the removal and use of nitrogenous waste. For the study, a recirculation system of three circular tanks of 7m³ was used, where 64 tilapias per m³ (0.35 ± 0.18 g) were stocked. During the first phase, three mushroom cultivation cycles of 20 d were developed in two systems: Aquaponic and traditional irrigation. Subsequently, six 12 d of growth cycles for green fodders (yellow and white maize, wheat and sorghum), and finally one 45 d cucumber and watermelon bicultivation cycles were done. The total cumulative mushroom production in the aquaponic treatment during the three cycles was 16 % higher than the obtained in the traditional treatment. Most of forage production in total fresh biomass was obtained with wheat (47.55 kg), however The higher length in the stems (27 ± 2.20 cm) and the greater nitrogen metabolite removal efficiency were achieved with white maize. The cucumber and watermelon plants produced fruits until the second month of culture with total yield of 27.15 kg and 4.84 kg, respectively, and also they are the most efficient to leverage metabolites versus mushrooms and fodder. With the above results, it can be concluded, that during the tilapia production, it is possible to grow various vegetables, and take advantage of nitrogenous metabolites by aquaponic practices., En un ciclo de producción de tilapia, se realizó el cultivo de hongos setas, forrajes verdes y cucurbitáceas en un sistema acuapónico, con el objetivo de evaluar la eficiencia en la remoción y aprovechamiento de desechos nitrogenados. Para el estudio se usó un sistema de recirculación de tres tinas circulares de 7 m³, en las que se sembraron 64 tilapias por m³. En la primera fase, se mantuvieron tres ciclos de cultivo de setas de 20 d, en dos sistemas: acuaponía y riego tradicional. Posteriormente, se realizaron seis ciclos de 12 d de crecimiento de cuatro forrajes verdes: maíz amarillo y blanco, trigo y sorgo, para luego realizar un ciclo de 45 d de pepino y sandía en bicultivo. La producción acumulada total de setas en el tratamiento de acuaponía durante los tres ciclos fue 16 % superior al obtenido con riego tradicional. La mayor producción de forraje en biomasa total fresca se obtuvo el trigo (47.55 kg); la mayor longitud de tallos (27 ± 2.20 cm) y eficiencia de remoción de metabolitos nitrogenados en el maíz blanco. Las plantas de pepino y sandía produjeron frutos al segundo mes de cultivo, con rendimiento de 27.15 y 4.84 kg, respectivamente, las cuales fueron más eficientes en aprovechar los metabolitos que las setas y los forrajes. En el ciclo de producción producción de tilapia se puede cultivar diferentes vegetales y aprovechar los metabolitos nitrogenados con acuaponía.

This paper evaluates the prospects for utilizing aquaculture effluents as a nutrient source in organic hydroponic, as is the case in aquaponics. The development of organic hydroponics is dependent on replacing synthetic fertilizers with organically derived nutrients, such as those found in aquaculture effluents. Also, in hydroponic cultivation the establishment of a plant pathogen suppressive micro flora is part of the plant protection strategy. Therefore, both nutritional and microbial qualities of aquaculture water and organic hydroponic nutri-ent solution were analyzed and compared. Results showed both aquaculture water and or-ganic hydroponic solution to be deficient in a number of essential elements, although or-ganic hydroponic solution was closer to recommendations. The organic nutrient solution had the highest densities of aerobic bacteria as well as fluorescent pseudomonades. Levels of fluorescent pseudomonades in aquaculture water were significantly lower after passing through the biofilter. Qualitative analysis of microorganisms in an actual aquaponic farm would help to better understand the composition of the micro flora in this unique environ-ment and its implications for nutrient cycling as well as plant health., Detta arbete utvärderar möjligheterna att använda vattnet från fiskodlingar som näringskäl-la i ekologisk hydroponisk odling, så som är fallet i akvaponiska odlingssystem. Att ersätta syntetiska gödselmedel med organiska är avgörande för utvecklingen av ekologisk hydro-ponisk odling. Dessutom ingår etablering av en sjukdomsundertryckande mikroflora som en del av växtskyddsstrategin i moderna hydroponiska odlingar. Därför analyserades och jämfördes både näringsmässiga och mikrobiella egenskaper hos fiskodlingsvatten med de från en ekologisk hydroponisk näringslösning. Resultaten visade att både den hydroponis-ka näringslösningen och fiskodlingsvattnet hade brist på flertalet essentiella västnärings-ämnen, dock var den ekologiska näringslösningen mest optimal. Den ekologiska närings-lösningen hade högst densitet av aeroba bakterier, så väl som av fluorescerande pseudo-monader. Nivån av svampar var likvärdig. Halten av fluorescerande pseudomonader var märkbart mindre efter att fiskodlingsvattnet passerat anläggningens biofilter. En kvalitativ analys av mikrofloran i en akvaponisk odling skulle kunna öka förståelsen av mikroorganismers uppträdande i denna unika miljö samt potentiell inverkan på växt-skydd och växtnäringscykeln.

Aquaponics is a food production method that combines hydroponic and aquaculture to form a system that, through symbiosis, re-circulates all the water and nutrients – and thereby negates any discharge of eutrophied or contaminated residuals – in order to grow terrestrial plants and aquatic life. To study the possibilities of aquaponics at northern latitude, a small scale aquaponic system was constructed in Jämtland, a county in the Mid Sweden region (latitude 63°) and studied while running over a nine month period, August 2012 to April 2013. The fish species grown in the fish tank was a species of trout prominent in local lake and stream fauna. The plants in the growbed were a mixture of different flora with herbs as a dominating part. Water from a local groundwater well was used. At start, appropriate nitrogen level in the system was achieved by adding ammonia. The values of nitrate, nitrite, pH, carbonate and total hardness were analyzed in repeatedly measured samples. The values stabilized quickly and stayed stable over the duration of the experiment. Heavy metals were analyzed at one point in time and showed no levels causing reason for alarm. Electric energy use for pumps and lighting was measured to reach close to 40 kWh per month. The trout growth was monitored and found to be comparable with (equal or slightly higher than in) the conventional aquaculture where the fish were originally obtained, when comparing with the same species and same brood. Among flora three herbs were the species thriving best, Oregano, Rosemary and Thyme. They kept growing throughout the winter with Oregano never ceasing to bloom. The total mass of produced vegetables and herbs were fairly low, since the herbs grew best. Results indicate that present aquaculture systems (fish only) could potentially be converted or adjusted into aquaponic systems (recirculating and purifying the water through a growbed) and thereby decrease potential risks of fresh water pollution from fish farming, e

Aquaponics is a food production method that combines hydroponic and aquaculture to form a system that, through symbiosis, re-circulates all the water and nutrients – and thereby negates any discharge of eutrophied or contaminated residuals – in order to grow terrestrial plants and aquatic life. To study the possibilities of aquaponics at northern latitude, a small scale aquaponic system was constructed in Jämtland, a county in the Mid Sweden region (latitude 63°) and studied while running over a nine month period, August 2012 to April 2013. The fish species grown in the fish tank was a species of trout prominent in local lake and stream fauna. The plants in the growbed were a mixture of different flora with herbs as a dominating part. Water from a local groundwater well was used. At start, appropriate nitrogen level in the system was achieved by adding ammonia. The values of nitrate, nitrite, pH, carbonate and total hardness were analyzed in repeatedly measured samples. The values stabilized quickly and stayed stable over the duration of the experiment. Heavy metals were analyzed at one point in time and showed no levels causing reason for alarm. Electric energy use for pumps and lighting was measured to reach close to 40 kWh per month. The trout growth was monitored and found to be comparable with (equal or slightly higher than in) the conventional aquaculture where the fish were originally obtained, when comparing with the same species and same brood. Among flora three herbs were the species thriving best, Oregano, Rosemary and Thyme. They kept growing throughout the winter with Oregano never ceasing to bloom. The total mass of produced vegetables and herbs were fairly low, since the herbs grew best. Results indicate that present aquaculture systems (fish only) could potentially be converted or adjusted into aquaponic systems (recirculating and purifying the water through a growbed) and thereby decrease potential risks of fresh water pollution from fish farming, e

A preliminary study on the effect of combination biofilters, including coral rubble, geotextile Aquamat™ (Meridian Aquatic Technology, Silver Spring, MD, USA), and algal aquaponics in a marine fish recirculating system was investigated. Aquamat™ is an innovative product fabricated from highly specialized synthetic polymer substrates. Aquamat™ forms a complex three-dimensional structure that resembles seagrass in appearance, and has been used to support high stocking densities in fish culture ponds and enhance biological processes. In addition, coral rubble was used, and two seaweed species, Eucheuma spinosum and E. cottonii, were evaluated for their usefulness as aquaponic biofilters in a recirculating system. Results showed that the four different biofilters operating within the recirculating system were significantly different (P<0.05) in NH3-N and NO3-N concentrations. The lowest mean NH3-N concentration was recorded in the recirculating tank using Aquamat™ + seaweed + coral rubble, while the highest mean NO3-N concentration was recorded in the recirculating tank using Aquamat™ + coral rubble. Fish weight gain and survival rates were not significantly different (p<0.05) in the four recirculating systems. In the second experiment, three varieties of Eucheuma spp. grew poorly, and produced no noticeable effects on NH3-N, NO2-N and NO3-N concentrations. Eucheuma cottonii decayed in the early days, while the two varieties of E. spinosum decayed after 35 days. Once decayed, water quality impairment followed. This study concluded that Eucheuma species were not suitable as a method of biofiltration in a recirculating culture system. While these seaweeds do remediate water quality, they themselves require a good environment to perform this role. When conditions are not optimal for the stocked organisms, the co-culture system can produce negative results. Followup investigation is needed to determine the suitability of such integrated aquatic systems for a large-scale fis

Hmyzia múčka má potenciál ako potravina alebo krmivo. Pre rastúci počet obyvateľov je potrebné zabezpečiť dostatok potravy, a to je spojené so zvyšujúcim dopytom po živočíšnej výrobe. Základom ľudskej stravy je od nepamäti mäso a ryby ako bohatý zdroj proteínov a tukov pre ľudskú výživu. Kvalitným zdrojom živočíšnych proteínov a tukov pre ľudí sú ryby, ktoré tvoria základ jedálnička veľkého množstva ľudí hlavne v prímorských oblastiach. Narastajúci dopyt po rybách je spojený so zvyšujúcimi záujmom o kvalitne a cenovo prijateľné krmivo pre ryby. Hlavnou zložkou krmiva rýb je v dnešnej dobre rybia múčka, ktorej cena neustále rastie. Udržateľnosť akvakultúrneho priemyslu závisí od nájdenia náhrady za rybiu múčku, ktorá by sa vyznačovala rovnakou výživovou hodnotou a dostupnosťou. V poslednej dobe začal rásť záujem o živočíšne bielkoviny z hmyzu pri výkrme rýb. Táto diplomová práca bola zameraná na analýzu hmyzej múčky z lariev Múčiara obyčajného (Tenebrio molitor) a jej využitie pre potravinárske a kŕmne účely. Teoretická časť popisuje Múčiara obyčajného, využitie hmyzej múčky pre ľudskú výživu a výkrm rýb. Ďalej sú tam popisované nároky rýb na jednotlivé nutrienty a charakterizáciu kŕmneho hmyzu zameranú na Múčiara obyčajného použitého, ako alternatívnej zložky krmiva u rýb. V experimentálnej časti boli stanovené jednotlivé významné nutričné látky, a to proteíny, lipidy, mastné kyseliny, aminokyseliny, vláknina, chitín a vybrané minerálne látky. Experimentálna časť bola rozdelená na dve časti a prvá časť bola rozdelená na dve fázy. Prvej fázy sa stanovovali nutričné zložky v dvoch frakciách hmyzej múčky z lariev Tenebrio molitor. Prvá frakcia obsahovala jemný podiel a druhá frakcia hrubý podiel hmyzej múčky. V druhej fáze sa stanovoval obsah nutrične významných zložiek iba v hmyzej múčke zo sušených lariev bez rozdelenia na frakcie. Z výsledkov analýz bolo navrhnuté krmivo pre ryby. V druhej časti bol skúmaný vplyv prídavku hmyzej múčky z Tenebrio molitor pre potravin, Insect meal has excellent potential as food or feed. There is a need to provide enough food for the growing population, which is linked to the increasing demand for livestock production. Meat and fish have always been the staple of the human diet as a rich source of proteins and fats for human nutrition. Fish is a good source of animal protein and fat for humans, which forms the basis of the diet of a large number of people who generally live in coastal areas. The increasing demand for fish is associated with a growing interest in high-quality and affordable fish feed. Nowadays, the main ingredient in fish feed is fishmeal, and the price is constantly increasing. The sustainability of the aquaculture industry depends on finding a substitute for fishmeal with the same nutritional value and availability. Recently, there has been a growing interest in animal protein from insects for fish fattening. This thesis focused on analysing insect meal from mealworm larvae (Tenebrio molitor) and its use for food and feed purposes. The theoretical part describes the mealworm, the use of insect meal for human nutrition, and fish fattening. It also describes the requirements of fish for individual nutrients and the characterisation of insects for feeding purposes, focusing on the mealworm used as an alternative feed ingredient in fish. The individual major nutrients, namely protein, lipids, fatty acids, amino acids, fibre, chitin, and selected minerals, were determined in the experimental part. The experimental part was divided into two parts, and the first part was divided into two phases. The first phase was used to determine the nutritional components in two fractions of insect meal from Tenebrio molitor larvae. The first fraction contained the fine fraction, and the second fraction the coarse fraction of insect meal. In the second phase, the content of nutritionally significant components was only determined in the insect meal from dried larvae without fractionation. A fish fee

Hmyzia múčka má potenciál ako potravina alebo krmivo. Pre rastúci počet obyvateľov je potrebné zabezpečiť dostatok potravy, a to je spojené so zvyšujúcim dopytom po živočíšnej výrobe. Základom ľudskej stravy je od nepamäti mäso a ryby ako bohatý zdroj proteínov a tukov pre ľudskú výživu. Kvalitným zdrojom živočíšnych proteínov a tukov pre ľudí sú ryby, ktoré tvoria základ jedálnička veľkého množstva ľudí hlavne v prímorských oblastiach. Narastajúci dopyt po rybách je spojený so zvyšujúcimi záujmom o kvalitne a cenovo prijateľné krmivo pre ryby. Hlavnou zložkou krmiva rýb je v dnešnej dobre rybia múčka, ktorej cena neustále rastie. Udržateľnosť akvakultúrneho priemyslu závisí od nájdenia náhrady za rybiu múčku, ktorá by sa vyznačovala rovnakou výživovou hodnotou a dostupnosťou. V poslednej dobe začal rásť záujem o živočíšne bielkoviny z hmyzu pri výkrme rýb. Táto diplomová práca bola zameraná na analýzu hmyzej múčky z lariev Múčiara obyčajného (Tenebrio molitor) a jej využitie pre potravinárske a kŕmne účely. Teoretická časť popisuje Múčiara obyčajného, využitie hmyzej múčky pre ľudskú výživu a výkrm rýb. Ďalej sú tam popisované nároky rýb na jednotlivé nutrienty a charakterizáciu kŕmneho hmyzu zameranú na Múčiara obyčajného použitého, ako alternatívnej zložky krmiva u rýb. V experimentálnej časti boli stanovené jednotlivé významné nutričné látky, a to proteíny, lipidy, mastné kyseliny, aminokyseliny, vláknina, chitín a vybrané minerálne látky. Experimentálna časť bola rozdelená na dve časti a prvá časť bola rozdelená na dve fázy. Prvej fázy sa stanovovali nutričné zložky v dvoch frakciách hmyzej múčky z lariev Tenebrio molitor. Prvá frakcia obsahovala jemný podiel a druhá frakcia hrubý podiel hmyzej múčky. V druhej fáze sa stanovoval obsah nutrične významných zložiek iba v hmyzej múčke zo sušených lariev bez rozdelenia na frakcie. Z výsledkov analýz bolo navrhnuté krmivo pre ryby. V druhej časti bol skúmaný vplyv prídavku hmyzej múčky z Tenebrio molitor pre potravin, Insect meal has excellent potential as food or feed. There is a need to provide enough food for the growing population, which is linked to the increasing demand for livestock production. Meat and fish have always been the staple of the human diet as a rich source of proteins and fats for human nutrition. Fish is a good source of animal protein and fat for humans, which forms the basis of the diet of a large number of people who generally live in coastal areas. The increasing demand for fish is associated with a growing interest in high-quality and affordable fish feed. Nowadays, the main ingredient in fish feed is fishmeal, and the price is constantly increasing. The sustainability of the aquaculture industry depends on finding a substitute for fishmeal with the same nutritional value and availability. Recently, there has been a growing interest in animal protein from insects for fish fattening. This thesis focused on analysing insect meal from mealworm larvae (Tenebrio molitor) and its use for food and feed purposes. The theoretical part describes the mealworm, the use of insect meal for human nutrition, and fish fattening. It also describes the requirements of fish for individual nutrients and the characterisation of insects for feeding purposes, focusing on the mealworm used as an alternative feed ingredient in fish. The individual major nutrients, namely protein, lipids, fatty acids, amino acids, fibre, chitin, and selected minerals, were determined in the experimental part. The experimental part was divided into two parts, and the first part was divided into two phases. The first phase was used to determine the nutritional components in two fractions of insect meal from Tenebrio molitor larvae. The first fraction contained the fine fraction, and the second fraction the coarse fraction of insect meal. In the second phase, the content of nutritionally significant components was only determined in the insect meal from dried larvae without fractionation. A fish fee

Hmyzia múčka má potenciál ako potravina alebo krmivo. Pre rastúci počet obyvateľov je potrebné zabezpečiť dostatok potravy, a to je spojené so zvyšujúcim dopytom po živočíšnej výrobe. Základom ľudskej stravy je od nepamäti mäso a ryby ako bohatý zdroj proteínov a tukov pre ľudskú výživu. Kvalitným zdrojom živočíšnych proteínov a tukov pre ľudí sú ryby, ktoré tvoria základ jedálnička veľkého množstva ľudí hlavne v prímorských oblastiach. Narastajúci dopyt po rybách je spojený so zvyšujúcimi záujmom o kvalitne a cenovo prijateľné krmivo pre ryby. Hlavnou zložkou krmiva rýb je v dnešnej dobre rybia múčka, ktorej cena neustále rastie. Udržateľnosť akvakultúrneho priemyslu závisí od nájdenia náhrady za rybiu múčku, ktorá by sa vyznačovala rovnakou výživovou hodnotou a dostupnosťou. V poslednej dobe začal rásť záujem o živočíšne bielkoviny z hmyzu pri výkrme rýb. Táto diplomová práca bola zameraná na analýzu hmyzej múčky z lariev Múčiara obyčajného (Tenebrio molitor) a jej využitie pre potravinárske a kŕmne účely. Teoretická časť popisuje Múčiara obyčajného, využitie hmyzej múčky pre ľudskú výživu a výkrm rýb. Ďalej sú tam popisované nároky rýb na jednotlivé nutrienty a charakterizáciu kŕmneho hmyzu zameranú na Múčiara obyčajného použitého, ako alternatívnej zložky krmiva u rýb. V experimentálnej časti boli stanovené jednotlivé významné nutričné látky, a to proteíny, lipidy, mastné kyseliny, aminokyseliny, vláknina, chitín a vybrané minerálne látky. Experimentálna časť bola rozdelená na dve časti a prvá časť bola rozdelená na dve fázy. Prvej fázy sa stanovovali nutričné zložky v dvoch frakciách hmyzej múčky z lariev Tenebrio molitor. Prvá frakcia obsahovala jemný podiel a druhá frakcia hrubý podiel hmyzej múčky. V druhej fáze sa stanovoval obsah nutrične významných zložiek iba v hmyzej múčke zo sušených lariev bez rozdelenia na frakcie. Z výsledkov analýz bolo navrhnuté krmivo pre ryby. V druhej časti bol skúmaný vplyv prídavku hmyzej múčky z Tenebrio molitor pre potravin, Insect meal has excellent potential as food or feed. There is a need to provide enough food for the growing population, which is linked to the increasing demand for livestock production. Meat and fish have always been the staple of the human diet as a rich source of proteins and fats for human nutrition. Fish is a good source of animal protein and fat for humans, which forms the basis of the diet of a large number of people who generally live in coastal areas. The increasing demand for fish is associated with a growing interest in high-quality and affordable fish feed. Nowadays, the main ingredient in fish feed is fishmeal, and the price is constantly increasing. The sustainability of the aquaculture industry depends on finding a substitute for fishmeal with the same nutritional value and availability. Recently, there has been a growing interest in animal protein from insects for fish fattening. This thesis focused on analysing insect meal from mealworm larvae (Tenebrio molitor) and its use for food and feed purposes. The theoretical part describes the mealworm, the use of insect meal for human nutrition, and fish fattening. It also describes the requirements of fish for individual nutrients and the characterisation of insects for feeding purposes, focusing on the mealworm used as an alternative feed ingredient in fish. The individual major nutrients, namely protein, lipids, fatty acids, amino acids, fibre, chitin, and selected minerals, were determined in the experimental part. The experimental part was divided into two parts, and the first part was divided into two phases. The first phase was used to determine the nutritional components in two fractions of insect meal from Tenebrio molitor larvae. The first fraction contained the fine fraction, and the second fraction the coarse fraction of insect meal. In the second phase, the content of nutritionally significant components was only determined in the insect meal from dried larvae without fractionation. A fish fee