0000000000362436

AUTHOR

Francesco Fazio

showing 3 related works from this author

Water temperature influences growth and gonad differentiation in European sea bass (Dicentrarchus labrax, L. 1758)

2016

The effect of rearing temperature on gonad differentiation and growth was evaluated in sea bass (Dicentrarchus labrax). One control group (CG, n = 60) and two experimental groups (EG1, n = 30; EG2, n = 30) were selected. CG was reared at 15.0 °C during 10 days post-hatch (dph) and at 19.0 °C throughout the remaining larval and post-larval development. EG1 was exposed to 14.5 °C from 1 to 50 dph, followed by an increase to 20 °C until sampling (176 dph). EG2 was exposed to 14.5 °C from 1 to 37 dph, followed by an increase to 20 °C until sampling (226 dph); 30 fish from CG were randomly sampled at 176 dph (CG1, control for EG1) and 30 fish were sampled at 226 dph (CG2, control for EG2). Weigh…

Male0301 basic medicineendocrine systemmedicine.medical_specialtyGonadgrowthOvaryBiologyFish measurement03 medical and health sciencesFood Animalsgonad differentiationwater temperatureDicentrarchus labrax gonad differentiation growth water temperatureInternal medicineTestismedicineAnimalsDicentrarchus labraxSexual MaturationSea bassSmall AnimalsLarvaurogenital systemEquineOvaryTemperatureWaterbiology.organism_classification030104 developmental biologymedicine.anatomical_structureEndocrinologyWater temperatureLarvaDicentrarchus labrax Gonad differentiation Growth Water temperature Water temperature Bass Female Larva Male Ovary Sexual Maturation Testis Temperature WaterFish <Actinopterygii>BassFemaleAnimal Science and ZoologyDicentrarchus
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Gonadal sexual differentiation of European sea bass (Dicentrarchus labrax, L. 1758) of fingerlings in different size classes

2016

This report describes a study of the gonad differentiation in fingerlings of European sea bass (Dicentrarchus labrax) belonging to different size groups. Fishes were divided into four groups according to their weight: Group 1 (4.5 ± 0.7 g), Group 2 (9.2 ± 0.8 g), Group 3 (14.8 ± 1.8 g), and Group 4 (21.8 ± 2.3 g). In all groups, low percentages of undifferentiated or early sexually differentiated fish were found. Higher percentages of fully differentiated ovaries were found in Groups 1 and 3. Fully differentiated testes occurred in 90% of Group 4. Ninety percent of fish in Group 2 had gonads with intratesticular oocytes. This highlights the occurrence of intersexual cases and suggests that …

0301 basic medicineGonadPhysiologysexual differentiationZoologyAquatic ScienceOceanographygonadEuropean sea bafish size03 medical and health sciencesmedicineDicentrarchus labraxSettore BIO/06 - Anatomia Comparata E CitologiaSea bassPhenotypic plasticitySexual differentiationbiology04 agricultural and veterinary sciencesbiology.organism_classificationFishery030104 developmental biologymedicine.anatomical_structureEuropean sea bass dicentrarchus labrax fish size gonad sexual differentiation040102 fisheries0401 agriculture forestry and fisheriesFish <Actinopterygii>Dicentrarchus
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Preliminary Study on the In vitro and In vivo Effects of Asparagopsis taxiformis Bioactive Phycoderivates on Teleosts

2016

Several compounds from marine organisms have been studied for their potential use in aquaculture. Among the red algae, Asparagopsis taxiformis is considered one of the most promising species for the production of bioactive metabolites with numerous proposed applications. Here, the in vitro antibacterial activity, the easy handling and the absence of adverse effects on marine fish species are reported. Depending on the seasonal period of sampling, ethanol extracts of A. taxiformis exhibited significantly different inhibitory activity against fish pathogenic bacteria. The extract obtained in late spring showed strong antibacterial activity against Aeromonas salmonicida subsp. salmonicida, Vib…

0106 biological sciences0301 basic medicineAsparagopsis taxiformisaquaculture.Physiologyhematological parametersRed algaemedicine.disease_cause01 natural scienceslcsh:PhysiologyMicrobiologyAsparagopsis taxiformis Dicentrarchus labrax Sparus aurataantibacterial activity hematological parameter oxidative stresstoxicity03 medical and health sciencesAquacultureantibacterial activitySparus aurataPhysiology (medical)medicineoxidative stressDicentrarchus labraxSea basshematological parameterOriginal ResearchVibrio alginolyticusImmune stimulationlcsh:QP1-981biologybusiness.industry010604 marine biology & hydrobiologytoxicityPathogenic bacteriabiology.organism_classificationAeromonas salmonicida030104 developmental biologyPhotobacterium damselaeAsparagopsis taxiformisbusinessFrontiers in Physiology
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