Publications by authors named "E Suarez Gisbert"
The effect of different feeding habits on gut morphology and digestive function has been intensively studied during the last decades but sympatric closely related fishes are relatively rare objects of such studies. In the present study, we have identified both morphological and physiological changes in the digestive system of a sympatric pair of whitefish represented by "normal" Coregonus lavaretus pidschian (benthivorous) and "dwarf" C. l.
View Article and Find Full Text PDFEuropean eel is considered a "critically endangered" species due to its population decline (c.a. 98 %) in all European waters, primarily because human activities.
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- Trichodinidae are harmful protozoan parasites that significantly impact fish hatcheries in aquaculture, particularly in South America where information on their effects on native species is scarce.
- The study involved inducing breeding in Pacific fat sleeper fish larvae, leading to the observation of Trichodinid parasites present shortly after hatching.
- The infection contributed to a 58% mortality rate by the fourth day post-hatching, indicating that the presence of these parasites accelerated larval death compared to uninfected individuals.
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- A 90-day study assessed the impact of replacing fishmeal with defatted black soldier fly larvae meal on largemouth bass growth and fillet quality.
- Results indicated that higher BSFL content led to lower body weight, specific growth rates, and increased feed conversion ratios among the fish.
- The study concluded that replacing more than 45% of fishmeal with BSFL negatively affected growth and fillet nutritional quality, despite not impacting other biological parameters.
In the present study, we propose the use of swabs in non-lethal sampling procedures to collect the mucosa-adhered gut microbiota from the posterior intestine of fish, and therefore, we compare the bacterial communities collected by conventional scraping and by swabbing methods. For this purpose, samples of the posterior intestine of rainbow trout () were collected first using the swabbing approach, and after fish euthanasia, by mucosa scraping. Finally, bacterial communities were compared by 16S rRNA gene Illumina sequencing.
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