Negative effects of artificial diets on growth and the digestive tract of 1‐month‐old Redhead cichlid (
            <i>Vieja melanura</i>
            , Günther, 1862)

Adamek‐Urbańska, Dobrochna; Kasprzak, Robert; Tyszkiewicz, Magda; Fisher, Kevin; Dąbrowski, Konrad

doi:10.1111/are.15323

Cited by 4 publications

(2 citation statements)

References 34 publications

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“…In addition, the replacement of soybean with high protein distiller dried grains up to 50% improved the area of absorption and goblet cell number in the proximal intestine of sea bass, Dicentrarchus labrax [54]. In accordance, using zooplankton feeding (Artemia) against dry feed revealed an improvement of mucosal fold length and development of the intestinal tract [55] (Adamek-Urbańska et al, 2021). The intestine of fish fed increasing levels of DMM significantly showed an improvement in the number of goblet cells in the present study.…”

Section: Discussionmentioning

confidence: 99%

“…The intestine of fish fed increasing levels of DMM significantly showed an improvement in the number of goblet cells in the present study. Goblet cells are a mucus secreting cell that protects the intestinal wall from pathogens and toxic materials and increasing goblet cells abundance improves the absorption of nutrients, especially polypeptide [55,56].…”

Section: Discussionmentioning

confidence: 99%

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Effect of a New Feed Daphnia magna (Straus, 1820), as a Fish Meal Substitute on Growth, Feed Utilization, Histological Status, and Economic Revenue of Grey Mullet, Mugil cephalus (Linnaeus 1758)

et al. 2021

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The formulator of aquatic diets is part of a continuous search for alternative protein sources instead of depreciated fish meal. The utilization of zooplankton as a feed ingredient is an interesting trend due to their high-quality protein content and abundance of essential nutrients. The current study aims to investigate the effects of partial and total replacement of fish meal (FM) by Dahpnia magna meal (DMM) on growth performance, feed utilization, histological, and economic status of mullet, M. cephalus, larvae. In addition to the control diet, 100% FM, D0, four diets containing DMM at different levels were used: 25% (D25), 50% (D50), 75% (D75), and 100% (D100) replacement of fish meal. A total of 300 larvae (0.097 ± 0.001 g) were equally divided into five groups (three replicate per each group) at a density of 200 larvae m−3. The aquariums were renewed at a rate of 30% daily. During the 60-day experimental period, all larvae were fed their respective diets at a level of 20% of live body weight, five times a day (9.00 a.m., 12.00, 15.00, 18.00, and 21.00 p.m.). The results indicated that compared to D0, fish fed D75 recorded the highest significant value of growth, and feed utilization parameters, while fish fed D100 achieved the lowest feed cost and incidence cost, and the highest profit index and economic efficiency ratio. A strong correlation was reported among weight gain, feed conversion ratio and fish meal replacement with DMM; R2 = 0.94 and 0.91, respectively. The fit regression model representing mullet response to FM replacement with DMM is a poly-nominal regression model with maximum response at 75–100%. The histological investigation of the intestine revealed an improvement of histomorphometric indices and goblet cell number with increasing DMM inclusion levels. These findings confirmed that 75% to 100% partial substitution of FM with DMM is the ideal replacement for mullet, M. cephalus, larvae for improving fish growth performance and feed utilization.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Effect of a New Feed Daphnia magna (Straus, 1820), as a Fish Meal Substitute on Growth, Feed Utilization, Histological Status, and Economic Revenue of Grey Mullet, Mugil cephalus (Linnaeus 1758)

et al. 2021

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From hatching to juvenile: Larval development of Vieja fenestrata (Teleostei: Cichlidae)

Contreras‐Tapia,

Benítez‐Díaz Mirón,

Garza Mouriño

et al. 2024

Journal of Fish Biology

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This study delves into the early development of Vieja fenestrata (Cichlidae), with a specific focus on the description of external morphological and morphometric changes, and growth patterns from hatching to the loss of larval characters under controlled laboratory conditions at a temperature of 28°C. Asynchronous hatching was observed between 58 and 60 h postfertilization, with the posterior body emerging first. Over 14 days, significant morphological, physiological, and behavioral changes were observed, revealing a complex developmental trajectory. The initial developmental phases were characterized by rapid vascularization, fin differentiation, and heightened activity, and the subsequent days witnessed the flexion of the notochord, emergence of swim bladder functionality, and transition to exogenous feeding. Maturation progressed with the absorption of the yolk sac, regression of cement glands, and fin ray development, culminating in metamorphosis by 14 days post‐hatching. Throughout this period, evolving pigmentation patterns and structural adaptations highlight the species' adaptive strategies. During the larval period of V. fenestrata, substantial changes in morphological proportions were observed. Before the inflection, tail length, trunk length, and body depth had negative allometric growth, and head length, eye diameter, and snout length had positive allometric growth. After the inflection, body depth and snout length showed positive allometric growth; head length and trunk length exhibited isometric growth, whereas tail length and eye diameter demonstrated negative allometric growth. These findings contribute insights into the intricate developmental dynamics of V. fenestrata. Moreover, further research may explore these developmental dynamics' ecological and evolutionary implications.

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Ingestion Rate, Prey Selectivity, and Growth of Larval Vieja zonata (Teleostei: Cichlidae) Co‐Fed Rotifers with Cladocerans

Contreras-Tapia,

Garza-Mouriño,

Castellanos-Páez

et al. 2024

Aquaculture Nutrition

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The study of fish larval nutrition is important as dietary requirements change significantly with growth. Vieja zonata is a cichlid species that is endemic to Mexico. In this study, we investigated the ingestion rate, prey selectivity, and growth of V. zonata larvae that were fed on prey cultured with and without probiotics. We conducted three experiments to test the acceptability of the prey offered, determine the optimal density of the prey items, and observe the effect of probiotics on the larvae’s growth. The first experiment tested the acceptability of the prey offered to 5 days post‐hatched (dph) V. zonata larvae, and the second experiment determined the optimal density of the prey items. In the third experiment, we individually placed 5 dph larvae (SL = 5.97 ± 0.13 mm; 8.5 ± 0.25 mg) and fed them for 10 days with three different prey items: two rotifer species (Brachionus angularis and Plationus patulus at a density of 20 ind/mL) and a cladoceran species (Moina cf. macrocopa at 1 ind/mL), both cultures with and without probiotics. We counted the prey items consumed daily and provided fresh media with new prey at the above density. We determined the total counts, ingestion rates, and Manly’s selectivity index (αi) and measured and weighed the larvae at the beginning and end of the experiment. The endogenous feeding period with the yolk sac lasted until 5 dph, a mixed period with endogenous and exogenous feeding occurred from 5 to 7 dph, and an exogenous feeding period in which they fed on zooplankton was observed from day 7 to 15 dph. Brachionus angularis and Plationus patulus were accepted as prey after 5 dph, and Moina cf. macrocopa was accepted on 11 dph. During the first days of feeding, the preferred prey item was P. patulus, which later switched to M. cf. macrocopa on day 11. We found that the use of prey produced with NanoCrusta probiotics resulted in a significant increase in the somatic growth and weight of V. zonata. Our findings suggest that probiotics may potentially enhance the nutritional value of prey items and promote the growth of V. zonata larvae.

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Negative effects of artificial diets on growth and the digestive tract of 1‐month‐old Redhead cichlid ( Vieja melanura , Günther, 1862)

Cited by 4 publications

References 34 publications

Effect of a New Feed Daphnia magna (Straus, 1820), as a Fish Meal Substitute on Growth, Feed Utilization, Histological Status, and Economic Revenue of Grey Mullet, Mugil cephalus (Linnaeus 1758)

Effect of a New Feed Daphnia magna (Straus, 1820), as a Fish Meal Substitute on Growth, Feed Utilization, Histological Status, and Economic Revenue of Grey Mullet, Mugil cephalus (Linnaeus 1758)

From hatching to juvenile: Larval development of Vieja fenestrata (Teleostei: Cichlidae)

Ingestion Rate, Prey Selectivity, and Growth of Larval Vieja zonata (Teleostei: Cichlidae) Co‐Fed Rotifers with Cladocerans

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