The effect of weaning diet type on grey mullet (Mugil cephalus) juvenile performance during the trophic shift from carnivory to omnivory

Koven, William; Gisbert, Enric; Meiri-Ashkenazi, I.; Nixon, Oriya; Israeli, Dor; Tandler, A.; Soria, Héctor Nolasco; Solovyev, Mikhail; Rosenfeld, Hanna

doi:10.1016/j.aquaculture.2019.734848

Cited by 9 publications

(9 citation statements)

References 70 publications

(56 reference statements)

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“…The flathead grey mullet is an economically important fish species along its distribution area (Whitfield et al, 2012;Koven et al, 2020). Studying the different aspects of feeding behaviour and digestive physiology of this species may be important for the aquaculture industry as well as for natural ecosystem management.…”

Section: Discussionmentioning

confidence: 99%

Feeding regimes affected the circadian rhythms of pancreatic digestive enzymes and somatic growth in flathead grey mullet (Mugil cephalus) fry

Solovyev

Gisbert

2022

Comparative Biochemistry and Physiology Part A: Molecular &

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The effect of different feeding regimes on the circadian rhythms of pancreatic digestive enzyme activities was evaluated in Mugil cephalus fry weighting 0.34 ± 0.01 g. Feeding regimes (feeding ration = 3% stocked biomass) differed on the number of meals offered per day: one, two and ten meals per day (R1, R2 and R3, respectively). The number of meals per day affected somatic growth; in particular, fry from the R3 group (0.80 ± 0.01 g) grew better than their congeners from R2 (0.70 ± 0.01 g) and R1 (0.63 ± 0.01 g) groups (P < 0.05). Feeding behaviour was modulated by the feeding regime, being the maximal gut fullness values found just after meal distribution in R1 and R2 groups, whereas this trend was not observed when feed was offered continuously during light hours (R3). Fry from R1 and R2 groups showed hyperphagia as they tended to store in their gut as much as possible feed particles to be later digested due to the limited daily meals. This strategy negatively affected feed digestion due to inappropriate enzyme to substrate ratio, changes in digestive enzyme activities and chyme transit times, which ultimately impaired growth performance. Enzyme activities were modulated by the number of meals, the more frequent the meals offered, the lower enzyme activities, supporting the hypothesis that digestive function is adapted to obtain a maximum benefit of the ingested nutrients. Present results showed that feeding grey mullet fry continuously during day light hours optimized feed digestion and promoted fry growth.

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Section: Discussionmentioning

confidence: 99%

Feeding regimes affected the circadian rhythms of pancreatic digestive enzymes and somatic growth in flathead grey mullet (Mugil cephalus) fry

Solovyev

Gisbert

2022

Comparative Biochemistry and Physiology Part A: Molecular &

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“…This makes European aquaculture unsustainable [3,4]. As an alternative, the diversification of cultivated species has been proposed [5], with an emphasis on the cultivation of omnivorous and herbivorous species [6,7].…”

Section: Introductionmentioning

confidence: 99%

First Evaluation of Associated Gut Microbiota in Wild Thick-Lipped Grey Mullets (Chelon labrosus, Risso 1827)

García‐Márquez

Cerezo

Figueroa

et al. 2022

Fishes

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This study aimed to characterize the intestinal microbiota of wild thick-lipped grey mullets (Chelon labrosus) and explore its potential functionality on the host. Intestinal contents of anterior and posterior sections from wild fish were collected and DNA was extracted. Subsequently, the V3–V4 regions of 16S rRNA were sequenced using the Illumina technology and results were analyzed by bioinformatics pipeline. The functional profile of the microbial community was analyzed using PICRUSt software. Shannon and Simpson diversity indices were significantly higher in the posterior section of wild specimens. The overall taxonomic composition suggests a certain homogeneity in the anterior section of the intestine and heterogeneity in the posterior section. Due to this, no statistical differences were detected at any level among both intestinal sections. Predicted functions of intestinal microbiota showed the most abundant were those related to amino acid metabolism, carbohydrate metabolism, energy metabolism, membrane transport, and cell replication and repair. Furthermore, the analysis revealed microbial functional genes related to the elimination of environmental toxins.

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“…The fish specimens analyzed represent the typical edible wild fauna from Sardinian coastal lagoons and other Mediterranean transitional aquatic environments [27]. Research attention has been focused on the aquaculture of M. cephalus, which represents a traditionally harvested and consumed fish in various European countries as Italy, Spain, France, especially appreciated in Tunisia, Egypt and Taiwan and a suitable species for feeding populations in developing countries [20,26]. Moreover, the Supplementary Materials: The following supporting information can be downloaded at the website of this paper posted on Preprints.org, Table S1: the abundances for each identified phyla; Table S2: the relative abundances of the three most abundant phyla in each sample; Table S3: the abundances of all known families identified; Table S4: the relative abundances of the top three families identified in each sample; Figure S1 Funding: "This research was funded by Sardinian Region contribution: L.R.…”

Section: Discussionmentioning

confidence: 99%

“…Fish belonging to the Mugilidae family, commonly known as grey mullets' group, comprise a great number of species and they are one of the most ubiquitous teleost fami-lies in the planet coastal waters [19]. They have omnivorous and herbivorous feeding hab-its [20] and have been recently considered a cultivated marine fish which can be fed with "alternative" energy as insects and costeffective materials, plants, production discards etc., contributing to the realization of the goal of sustainability in aquaculture [21]. In this sense, grey mullets represent an interesting resource for aquacultural use since, the poten-tial for fish large scale production faces numerous challenges represented by ecological carrying capacity of existing sites and environmental impact [22].…”

Section: Introductionmentioning

confidence: 99%

Microbial Communities Associated with the Intestinal Tract of Grey Mullets from a Mediterranean Aquatic Environment

Floris,

Sanna,

Teodora

et al. 2024

Preprint

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Grey mullets comprise different species which represent the most ubiquitous teleost families in the planet coastal waters. They represent an important proportion of the Mediterranean lagoons production and have been recently considered a cultivated marine fish. This study aimed to explore the intestinal bacterial communities of 34 wild-caught grey mullets in order to study their composition and the variation during different seasons. Thirty four healthy wild-caught fish were sampled and the V3-V4 hypervariable regions of 16S rRNA were sequenced. Sixty prokaryotic phyla were identified and the most abundant ones were: Proteobacteria (mean relative abundance 35.4%±17.9), Actinobacteriota (mean relative abundance 16.4%±9.9) and Firmicutes (mean relative abundance 10.1%±10.9). Bacteria belonging to the phylum Chloroflexi were rele-vant in autumn, Spirochaetota, Verrucomicrobiota, Fusobacteriota and Cyanobacteria were particularly abundant in winter while Bacteroidota characterized summer fish. A total of three hundred thirty-two prokaryotic families were identified and the twenty-six most abundant ones were: Rhodociclaceae (Proteobacteria), Brevinemataceae (Spirocheaetota) and Fusobacteriaceae (Fusobacteriota) and the Staphylococcaceae (Firmicutes). This study sheds light on the ecology and high variation in the complex gut microbial community structure of Mediterranean grey mullets, the potential biotechnological role for fish nutrition and health and for preserving the aquatic habitat, a prerequisite for a sustainable aquaculture.

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The effect of weaning diet type on grey mullet (Mugil cephalus) juvenile performance during the trophic shift from carnivory to omnivory

Cited by 9 publications

References 70 publications

Feeding regimes affected the circadian rhythms of pancreatic digestive enzymes and somatic growth in flathead grey mullet (Mugil cephalus) fry

Feeding regimes affected the circadian rhythms of pancreatic digestive enzymes and somatic growth in flathead grey mullet (Mugil cephalus) fry

First Evaluation of Associated Gut Microbiota in Wild Thick-Lipped Grey Mullets (Chelon labrosus, Risso 1827)

Microbial Communities Associated with the Intestinal Tract of Grey Mullets from a Mediterranean Aquatic Environment

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