Combined effects of photoperiod and temperature on growth and survival of African catfish (<i>Clarias gariepinus</i>, Burchell 1822) larvae under laboratory conditions

Okoth, Elijah Oyoo; Orina, Paul; Rasowo, Joseph; Musa, Safina; Munguti, Jonathan M.; Charo‐Karisa, Harrison

doi:10.1080/10454438.2015.1113763

Cited by 15 publications

(9 citation statements)

References 18 publications

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“…This study proved that C. gariepinus larvae, exposed to prolonged light (24L), depressed their survival greatly compared to continuous dark (24D) or normal photoperiod (12DL), or shelter conditions (12DL_ PVC). Like the present study, similar analysis from Orina et al (2016) observed a decrease in the survival rate in C. gariepinus larvae submitted to 24 h of light than the larvae exposed to 24 h dark or natural photoperiod (12 h dark and 12 h light). In another report, working with the same species, Britz and Pienaar (1992) did not detect any variations in survival rate until 13 days of rearing under continuous dark or light, with or without cover.…”

Section: O N L I N E F I R S T a R T I C L Esupporting

confidence: 89%

Comparison of Nonlinear Functions using Partial Growth Data at Different Lengths of Growth Period in Awassi Lambs

Tekel¹,

Koncagül²,

Baritci³

et al. 2020

PJZ

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Photoperiod and shelter have direct or indirect effects on phenotypic traits expression in different fish species. The present study was, therefore, intended to explore whether these light and shelter could influence some phenotypic traits of African catfish larvae under laboratory condition. Newly hatched larvae were stocked in plastic aquaria (10L) at a rate of 5 individuals/L and reared for one month under four treatments such as 24h light (24L), 24 h dark (24D), 12h light and 12h dark with PVC (12DL_PVC), and 12h light and 12h dark without PVC (12DL) conditions. A total of 108 larvae were sampled for phenotypic traits analysis. The results revealed that complete darkness (24D) significantly improved the overall growth parameters (total length, standard length, caudal peduncle length, anal fin length, caudal fin length, total body depth, dorsal fin length, pre dorsal distance, pre anal distance, pre ventral distance, head width, head length, eye diameter, maxillary barbell length, inter orbital length, and specific growth rate) than all other treatments, while no significant variation was found among other treatments. Although shelter did not show any significant role in the overall growth, it significantly reduced the larval mortality than those reared without shelter. The survival rates were also significantly different among various light regimes in which the highest was found in 24D (86%) followed by 12DL_PVC (74%), 24L (71%), and 12DL (60%). The study also revealed that larvae reared in 24D exhibited maximum dark brown body colouration (63%), while in 24L showed maximum light brown colouration (96%). On the other hand, maximum larvae were appeared as medium brown color (76%) in tanks having PVC, whereas many of them were light brown (61%) in non-PVC tanks. Taken together, the study suggests that C. gariepinus larvae should be reared in completely dark condition to enhance their overall production.

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Section: O N L I N E F I R S T a R T I C L Esupporting

confidence: 89%

Comparison of Nonlinear Functions using Partial Growth Data at Different Lengths of Growth Period in Awassi Lambs

Tekel¹,

Koncagül²,

Baritci³

et al. 2020

PJZ

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“…Nevertheless, in some species longer photoperiods have negatively impacted larval performance (Villamizar et al, 2011). For instance, an ontogenetic shift in growth, metabolism and efficiency of food utilization in relation to light conditions was reported for African catfish, Clarias gariepinus (Appelbaum & Kamler, 2000;Orina et al, 2016), in which they achieved better performance under total darkness than prolonged exposure to light. Overall, during early ontogeny, a species response to light is extremely variable; that is it can be negative, positive, or without impact and often linked to environmental adaptations.…”

Section: Discussionmentioning

confidence: 99%

Growth and survival of winter flounder ( Pseudopleuronectes americanus ) larvae reared on different photoperiod regimes from hatch to metamorphosis

Litvak

Zadmajid

Butts

2020

Aquaculture Research

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The aim of this study was to determine the effect of photoperiod on growth and survival of winter flounder, Pseudopleuronectes americanus, from hatch until metamorphosis.Sixteen 100 L upwelling tanks were stocked with larvae at an initial stocking density of 20 larvae/L. Larvae in eight tanks were provided with continuous light (24 h light/0 h dark), while those in the remaining eight tanks were grown under a photoperiod of 14 h light/10 h dark. Tanks were sampled for larval standard lengh from 6 to 28 days post-

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“…The growth of three wild population mahseer Tor soro only reached SGR around 0.61%/day (Asih & Setijaningsih, 2011). However, the growth of mahseer was categorized as a slow-growth performance as compared with other cultured fish larvae such as Common carp Cyprinus carpio (SGR: 3.82%/day at 28°C) (Desai et al, 2009) and African catfish Clarias gariepinus (5.14%/day at 28°C) (Orina et al, 2016). The optimum temperature for the excellent growth of fish in the Cyprinidae family commonly ranged from 25°C to 27°C (Ariyana, 2015;Ridwantara et al, 2019).…”

Section: Parametersmentioning

confidence: 99%

DETERMINING THE OPTIMUM TEMPERATURE FOR GROWTH, FEED EFFICIENCY AND SURVIVAL OF DOMESTICATED INDONESIAN MAHSEER, Tor soro LARVAE

Subagja¹,

Imanudin

Kurniawan³

et al. 2021

Indonesian Aquaculture Journal

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Temperature plays a pivotal role in the success of larvae production. Evaluation of the effects of different temperatures on growth, feed efficiency, and survival of domesticated Indonesian mahseer (Tor soro) larvae was carried out to determine an optimum rearing temperature. Five different temperature settings of 22°C, 24°C, 26°C, 28°C, and 30°C were used as the treatments arranged in triplicates, in indoor closed recirculating systems. The larvae were stocked in a rectangular glass tank with a stocking density of 150 larvae per tank and fed with a commercial feed (30% protein content) three times a day, about 10% per body weight over 61 days of observation. Measured parameters included the specific growth rate of total weight (SGRTW) and length (SGRTL), feed efficiency (FE), and survival rate (SR). The result showed that the treatments of different temperatures significantly affected the growth performance and feed efficiency of the larvae. The growth performance and feed efficiency of mahseer larva were much better at rearing temperature from 24°C to 28°C compared with those at 22°C and 30°C. There were no significant differences in SR in different temperatures tested. The SR was found to range from 86.44% to 100% in all treatments. Maintaining temperature ranging from 24°C to 28°C is the best rearing condition to achieve the optimum growth and feed efficiency of mahseer during the larval rearing period. The findings from this research could be set as a standard technique in larval rearing of Indonesian mahseer (Tor soro).

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Combined effects of photoperiod and temperature on growth and survival of African catfish (Clarias gariepinus, Burchell 1822) larvae under laboratory conditions

Cited by 15 publications

References 18 publications

Comparison of Nonlinear Functions using Partial Growth Data at Different Lengths of Growth Period in Awassi Lambs

Comparison of Nonlinear Functions using Partial Growth Data at Different Lengths of Growth Period in Awassi Lambs

Growth and survival of winter flounder ( Pseudopleuronectes americanus ) larvae reared on different photoperiod regimes from hatch to metamorphosis

DETERMINING THE OPTIMUM TEMPERATURE FOR GROWTH, FEED EFFICIENCY AND SURVIVAL OF DOMESTICATED INDONESIAN MAHSEER, Tor soro LARVAE

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