
Delano Dias SchlederInstituto Federal Catarinense, Campus Araquari · Aquaculture
Delano Dias Schleder
Doctor of Aquaculture
About
61
Publications
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Introduction
Additional affiliations
February 2008 - December 2009
Colégio Agrícola Senador Carlos Gomes de Oliveira (CASCGO)
Position
- Teacher
July 2010 - present
Instituto Federal Catarinense (IFC) - Campus Araquari
Position
- Teacher
Publications
Publications (61)
This study evaluated the midgut microbiology, hemato-immunological parameters and the resistance to thermal shock of the white-leg shrimp Litopenaeus vannamei fed with diets containing 0.5, 2, and 4% of the brown seaweeds Undaria pinnatifida and Sargassum filipendula. Shrimp were reared in clear seawater for 15 days in seven 800-L tanks with 100 sh...
Pacific white shrimp, Litopenaeus vannamei, is a tropical species known to be intolerant to cold. In our earlier work, increased thermal shock resistance caused by Sargassum filipendula raised unanswered questions about the mechanisms responsible for this resistance. Therefore, in the present work, we used MALDI-TOF MS mass spectrometry to assess p...
Dietary supplementation with seaweeds has the potential to improve the immune response and physiological performance of marine shrimp under stressful conditions. This work evaluated the effect of dietary supplementation using different ratios of the brown seaweeds Sargassum filipendula (S) and Undaria pinnatifida (U) on the gut microbiota as well a...
This work aimed to evaluate three different strategies for rearing L. vannamei in a biofloc system: heterotrophic, chemoautotrophic and a mature biofloc system relative to the effects of water quality, water bacterial community , biofloc composition and yield. To accomplish this, a study lasting 35 days was conducted with juvenile (3.46 g) shrimps...
The objectives of this research were to study the phytochemical composition of Cynodon dactylon and investigate if the oral administration of this plant extract adsorbed on the pellet feed was capable of protecting L. vannamei challenged with white spot syndrome virus (WSSV). The shrimps were distributed into five batches, and experiments were run...
This study aimed to identify the predominant bacterial populations in sardine samples with high histamine content (≥ 200 mg*kg-1) and histamine-free (< 1 mg*kg-1). For this study, 1,000 g of muscle samples were collected from 40–45 sardines per batch, all obtained from the same supplier, fishing area and period, for histamine analysis. Samples (1 g...
In the present study, Curcuma longa (CL) hydrolate and the probiotic Lactobacillus plan-tarum (LP) were provided as dietary supplements to Nile tilapia. One hundred ninety-two juvenile tilapias (2.25 ± 0.14 g and 4.5 ± 0.10 cm) were distributed in sixteen experimental units, and four experimental groups were established: CL [CUR]: fish fed a diet s...
This study investigated the resistance of Pacific white shrimp (L. vannamei) to hypothermal shock when treated with extracts from the brown seaweeds Sargassum filipendula and Ascophyllum nodosum, either by immersion for postlarvae or as a dietary supplement for juveniles. Post-larvae were exposed to seaweed extracts at concentrations of 20, 50, 100...
This study aimed to evaluate the inclusion of VILIGEN™, a blend containing sodium butyrate, dehydrated hydrolyzed yeast, and zinc proteinate, on the profile of the allochthonous intestinal microbial community, the activity of digestive enzymes, and the integrity of the intestinal barrier of juvenile Nile tilapia, Oreochromis niloticus. A feeding tr...
This study investigated the effects of dietary supplementation with inactivated Lactobacillus plantarum for Nile tilapia (Oreochromis niloticus). Three treatments, in quintuplicate, were established: a control group, fish fed a diet without additives; LP group, fish fed a diet supplemented with live probiotic; and IP group, fish fed a diet suppleme...
A study was conducted to test the inclusion of Aurantiochytrium sp. meal in the rearing of Penaeus vannamei grown in a clear water system and at a suboptimal temperature of 22 °C. The doses tested were 0 (control), 1, 2, 3, and 4% at a stocking density of 100 shrimp/m3. Rearing was carried out with aeration and individual heaters, and seawater temp...
Esta obra constituiu-se a partir de um processo colaborativo entre professores, estudantes e pesquisadores que se destacaram e qualificaram as discussões neste espaço formativo. Resulta, também, de movimentos interinstitucionais e de ações de incentivo à pesquisa que congregam pesquisadores das mais diversas áreas do conhecimento e de diferentes In...
Soy lecithin (SL) is a source of phospholipids, which play a crucial role in determining cell membrane structure, fluidity, and functionality. This study investigated the effects of dietary SL on the performance, nutrient digestibility, and body composition of Nile tilapia juveniles (average initial weight 12.2 g) raised at 22 °C. The experimental...
In some fish species, such as tuna, mackerel, and sardines, improper handling after fishing promotes the growth of histamine-forming bacteria. If consumed, histamine-contaminated fish can cause various symptoms, including vomiting, diarrhea, erythema, urticaria, and even anaphylaxis in severe cases. Understanding the main bacteria responsible for h...
This study evaluated the effect of thermal fluctuation on the susceptibility of Pacific White Shrimp to infection with the White Spot Syndrome Virus (WSSV). The shrimps were divided into two treatments: infected and subjected to thermal fluctuation from 28°C to 18°C for 48 h and back to 28°C (TF); and infected and kept at a constant temperature of...
Over the last few decades, aquaculture has undergone a dramatic
expansion in production, becoming a key source of food for people
in many countries. Indeed, aquaculture has become extremely
important for food security. However, the rapid expansion has led
to many concerns, such as the effects of water shortages, pollution,
disease and the depletion...
This study evaluated the combined use of the brown seaweeds Sargassum filipendula (S) and Undaria pinnatifida (U) dry biomass as feed additive for Pacific white shrimp reared in biofloc system, and its effect on shrimp performance, gut microbiota, hemato-immunological parameters, resistance to acute thermal stress and challenge with White Spot Synd...
This study reported on the addition of tannins to the diet of Litopenaeus vannamei and evaluated the effect on performance, immune response, intestinal microbiota, and experimental challenge against Vibrio parahaemolyticus. Tannin was added to feed in three concentrations of 0.1% (1.0 kg of tannin per ton of feed), 0.05% (500 g of tannin per ton of...
The present study evaluated the use of two microencapsulated probiotic additives in extruded diets for juvenile Nile tilapia (Oreochromis niloticus). For this purpose, 630 juvenile tilapias were distributed in nine experimental units (70 fish per unit), conditioned to three treatments (SACCH with Saccharomyces cerevisiae; BACIL with Bacillus amylol...
This study aimed to evaluate the use of protein hydrolysate of poultry by-product and swine liver in the diet of Litopenaeus vannamei and its effect on the intestinal microbiota and on the enzymatic activity of the hepatopancreas. Shrimp (10.94 ± 0.90 g) were fed with diets containing 0%, 25%, 50%, 75% and 100% of replacement of salmon by-product m...
This study aimed to evaluate the effects of the dietary supplementation Curcuma longa hydrolate on Nile tilapia (Oreochromis niloticus) reared in a recirculation system. Hemato-immunological parameters, growth performance, nitrogen and phosphorus retention, as well as body composition and its interaction with the intestinal microbiota, were studied...
Aurantiochytrium sp. is a heterotrophic microorganism that produces docosahexaenoic acid (DHA), thus being considered as a possible replacement for fish oil in aquafeeds. We investigated the effect of Aurantiochytrium sp. meal (AM) dietary levels (0, 5, 10, 20, and 40 g kg−1) on Nile tilapia body and hepatopancreas fatty acid (FA) profile, body FA...
This work aimed to assess the effect of the probiotic strain, Lactobacillus plantarum, on the levels of leptin, IGF-1 and their receptors on the hepatopancreatic tissues of Nile tilapia (Oreochromis niloticus) and then correlate fish growth performance and gut microbiological parameters. Fish juveniles (±23g) were reared in a recirculation system w...
This paper reports the evaluation of digestibility, immunological parameters, and resistance to thermal shock at low temperature in Litopenaeus vannamei fed diets with diferent Aurantiochytrium sp. meal additions (0; 0.5; 1 and 2%). First, the apparent digestibility coefficient of the ingredient was determined. The digestibility of the microalgae m...
This study evaluated the effect of carrageenan from Kappaphycus alvarezii on the growth and health parameters of the Pacific white shrimp Litopenaeus vannamei. Shrimp (initial weight 4.5 ± 0.5 g) were farmed in 800 L tanks for five weeks, at a density of 30 shrimp tank⁻¹, under controlled temperature (28.5 °C), constant aeration, 100% water exchang...
The aim of this work was to isolate, identify and characterize microorganisms present in intensive nursery of Penaeus vannamei during the spontaneous generation of the biofloc and to verify among the isolates, beneficial strains for the intensive cultivation of shrimp under biofloc conditions. 91 strains were isolated and identified by molecular ta...
This work aimed to evaluate the effect of the combined use of the brown seaweeds Sargassum filipendula (S) and Undaria pinnatifida (U) dry biomass, as a feed additive, on growth performance, bacterial count and thermal shock resistance of Pacific white shrimp reared in a biofloc system during the nursery phase. Four combinations of seaweeds were ev...
Este trabalho teve por objetivo quantificar a intensidade de marcadores celulares no tecido hepático de tilápias-do-nilo alimentadas com e sem adição do probiótico Lactobacillus plantarum. Os alevinos foram cultivados em sistema de recirculação e alimentados duas vezes ao dia. Após 30 dias de alimentação, os tratamentos com adição de L. plantarum a...
This study evaluated the effects of heterotrophic and mature biofloc systems on yield, water quality, sludge production, water bacterial community, recovery of nutrients and fish health in Litopenaeus vannamei and Oreochromis niloticus integrated culture through a 53-day experiment. Two treatments were evaluated: an organic carbon (C) supplemented...
Com a expansão na produção de tilápias-do-nilo, o contexto aquícola busca por alternativas que auxiliem na prevenção e combate a enfermidades. A décadas, probióticos vem sendo utilizados com a premissa de uma ótima colonização do trato gastrintestinal, colaborando para menor proliferação de microrganismos patogênicos e maior aproveitamento de nutri...
No Brasil, 75% da produção de pescados é oriunda da piscicultura continental, com destaque para a tilápia-do-nilo. Em 2019, esta espécie representou 57% da produção da piscicultura nacional e 71,21% da produção de Santa Catarina. No entanto, a tilapicultura apresenta desafios quanto a ocorrência de enfermidades, e o uso de probióticos tem constituí...
This study evaluated different stocking densities during pre-nursery of Pacific white shrimp post‑larvae (PL) reared in a biofloc system. The tanks (60 L) were stocked with PL stage 5 (PL 5) under five densities (80, 100, 120, 140 and 160 PLs L-1), in triplicate, resulting in 15 experimental units. PLs were fed nine times a day using commercial fee...
This study evaluated the effects of heterotrophic and mature biofloc systems on yield, water quality, sludge production, water bacterial community, recovery of nutrients and fish health in Litopenaeus vannamei and Oreochromis niloticus integrated culture through a 53-day experiment. Two treatments were evaluated: an organic carbon (C) supplemented...
This study evaluated the use of microalgae (Aurantiochytrium sp.) meal as a substitute for fish oil in the diet of juvenile Pacific white shrimp (Litopenaeus vannamei) reared in a clear‐water system. Dietary treatments at five replacement levels (0%, 25%, 50%, 75%, 100%) were performed in triplicate. After 46 days, only a slight difference in shrim...
Litopenaeus vannamei shrimp were reared in a bioflocs system and fed different levels of
soybean protein concentrate as a replacement for fishmeal, and both immunological parameters of this
marine shrimp and its resistance to Vibrio sp. infection (CPQBA 378-12 DRM01) were evaluated. Four
different diets were formulated with 0, 33, 66 and 100 % of s...
With the present project, the phytochemical composition of Uncaria tomentosa cultivated in Chapecó (Brazil) was analyzed and then the potential of using this local plant extract to protect by oral feeding virus-infected Litopenaeus vannamei shrimp was also investigated. For this study, five treatments were tested: uninfected shrimp fed with pellete...
In previous study, shrimp fed with diets containing 0.5 and 2% of the brown algae Sargassum filipendula showed higher survival to thermal shock (about 97% against 43% of control group). It raised the question about the mechanism behind this thermal resistance caused by S. filipendula. Thus, the present study aimed to evaluate the lipid and protein...
The objective of this work was to evaluate the effect of Lactobacillus plantarum on the preservation of fresh mussels and its effect on the attractiveness, consumption, and midgut bacterial microbiota of Pacific white shrimp broodstock. The experiment evaluated mussels stored with L. plantarum at 4°C. The controls were: Mussels stored at-18°C witho...
Higher rates of production per unit area, avoiding or minimizing significant environmental damages, is a challenge for aquaculture to contribute with an ascendant demand for food due to the increase in world population. The present study assessed the hatchery performance of Litopenaeus vannamei between the mysis1 and postlarva5 stages, in a zero-ex...
The white-leg shrimp Litopenaeus vannamei were fed with diets contained 0.5%, 2% and 4% of brown seaweeds Undaria pinnatifida or Sargassum filipendula (dry mass). The resistance to thermal shock as well as the immunological parameters and microbiology of digestive tract were evaluated. Shrimp cultivation was made clear water system for two weeks in...
Bacterial inorganic nitrogen control using carbon:nitrogen ratio (C:N) manipulation is a tool for aquaculture systems. The present study assessed the hatchery performance of Litopenaeus vannamei between the mysis 1 and postlarvae 5 stages in a zero-exchange biofloc system under different C:N fertilization levels (10:1, 12.5:1 and 15:1) with dextros...
The aim of this study is to evaluate the effect of dietary supplementation with sodium butyrate or polyhydroxybutyrate (PHB) on the growth performance and changes in intestinal microbiota and hemato-immunological parameters of the Litopenaeus vannamei reared under a superintensive biofloc system. Twelve 800 L tanks were stocked with 250 shrimp·m-3...
Seahorse’s culture has become an excellent alternative to meet the export demand of these spe-cies and reduce overexploitation of natural populations in Brazil. This study aimed to evaluate differenttechniques of spawning and nursery seahorseHippocampus reidiin recirculating system. Two experi-ments were conducted, the first were used experimental...
The present study aimed to evaluate the mortality, reactive oxygen species production (ROS) and total hemocyte counts (THC) of the marine shrimp Litopenaeus vannamei infected with the white spot syndrome virus (WSSV) at three levels of oxygen saturation. For this, 360 shrimp (20±2g) were distributed in 24 tanks (60L), divided in two groups (infecte...
The present study aimed to evaluate the cumulative mortality, reactive oxygen species production (ROS) and total hemocyte counts (THC) of the marine shrimp Litopenaeus vannamei infected with Vibrio alginolyticus at different oxygen saturations. For this, 240 shrimp (10 ± 1.5g) were distributed into 16 tanks (60L), divided into two groups, infected...
In worldwide aquaculture, scallops are important bivalve mollusks with high economic and nutritional value. In many countries scallop culture relies on seeds obtained from hatcheries. For this reason, broodstock conditioning is an important step for the production of spats. The experiment was conducted with an astaxanthin-enriched diet and a contro...
The effect of a Lactobacillus plantarum-supplemented diet on shrimp growth, digestive tract bacterial microbiota, survival, and some hemato-immunological parameters after an experimental challenge with Vibrio harveyi was studied. No difference (P>0.05) was observed in shrimp survival (80±6%) and final weight (6.63±0.56g) after 60 days feeding trial...
The capacity of reactive oxygen intermediates production upon haemocyte stimulation is one of the most important immunoparameter utilized to assess the health status in cultivated shrimps. In the present study, we compared oxidative stress potential, by measuring the superoxide anion production in three penaeid shrimps: two wild Atlantic species, t...
sobrevivência e o crescimento inicial de 11 espécies arbóreas nativas do Brasil central, plantadas diretamente em pastagem de Brachiaria brizantha cv. Marandu, em Campo Grande, MS. O solo foi classificado como Latossolo Vermelho, argiloso e distrófico, onde foi implantado um arboreto com 16 parcelas compostas, cada uma, por um indivíduo das 11 espé...
This work aimed to evaluate the rate of survival and the initial development of eleven native tree species established in existing pastures of Brachiaria brizantha at the Beef Cattle Center (Campo Grande, MS). The soil is a dystrophic clay Dark- Red Latosoil. The seedlings were planted in 16 rows, with 10 m between rows and 4 m between plants in a...
The cultivation of scallops Nodipecten nodosus is a promising activity emerging in Brazil. The purpose of this study was to characterize the immune system of N. nodosus and evaluate the modulation of some hemato-immunological parameters during the reproductive cycle, in association with an astaxanthin-enriched diet. It was hypothesized that a suppl...
Questions
Question (1)
Dear Colleagues,
We are preparing a Special Issue on the “Enhancing Shrimp Growth and Immunity through Feed Additives”. link: https://www.mdpi.com/journal/fishes/special_issues/64T2P2I7AA
Shrimp are invertebrate organisms and, therefore, rely only on the innate immune response. Thus, alternative strategies are required to prevent and control the numerous diseases that impact the shrimp farming industry worldwide. Feed additives are widely used to enhance shrimp health and growth performance, comprising an important strategy for the industry. These additives include several classes of compounds, molecules, or organisms, which can be immunomodulators, disease resistance promoters, intestinal flora balancers, nutritional, sensory, digestive and growth enhancers.
Thus, the aim of this issue is to provide up-to-date information on the enhancement of shrimp growth and immunity through feed additives. We welcome the submission of original research articles, short communication, reviews, and mini-reviews on topics including, but not limited to, the following: (1) feed additives and growth performance; (2) feed additives and immunity and disease resistance; (3) feed additives and shrimp microbiota; (4) feed additives and stress resistance; (5) fermented ingredients as feed additive.
Prof. Dr. Delano Dias Schleder
Dr. Scheila Anelise Pereira
Guest Editors
Prof. Dr. Delano Dias Schleder
Dr. Scheila Anelise Pereira
Guest Editors