Length-weight relationships and relative condition factor of fish inhabiting the marine area of the Eastern Mediterranean city, Tripoli-Lebanon

Jisr, Nazek; Younes, Ghassan; Sukhn, Carol; El-Dakdouki, Mohammad H.

doi:10.1016/j.ejar.2018.11.004

Cited by 208 publications

(181 citation statements)

References 20 publications

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“…Female specimens of all investigated species had a slightly higher mean value of total body length and total body weight than males (Table 1). Length frequency distribution of each studied species was mainly in accordance with the previously reported length ranges, not only for the Adriatic (Pallaoro et al, 1998(Pallaoro et al, , 2003Boglione et al, 2006;Sinovčić and Zorica, 2006;Glamuzina et al, 2007;Kraljević et al, 2011) but also for the area of the Mediterranean (Jadot et al, 2002;Boglione et al, 2006;Crosetti and Blaber, 2016;Jisr et al, 2018). Slight deviations observed within length ranges Table 1.…”

Section: Resultssupporting

confidence: 87%

Qualitative-Quantitative Analysis of the „Ciplara“ Purse Seine Catches in the Adriatic Sea

Zorica

Keč

Vuletin

et al. 2020

Croatian Journal of Fisheries

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Pelagic fisheries in the area of the eastern part of the Adriatic Sea, more precisely in the Croatian fishing grounds, are one of the most important types of fisheries in Croatia. In this paper, the quantitative and qualitative structure of catches obtained by the „ciplara“ purse seine in the Croatian part of the Adriatic Sea was analysed between 2013 and 2018. According to the data collected, the largest catches by this fishing gear were made in the coastal area, precisely in the fishing zones/sub-zones A/A4, E/E2, F/F2, C/C4 and G/G1. 70% of the catches consisted of targeted species, which indicates that the studied „ciplara“ purse seine is a selective fishing gear. Biological analyses are given for four target species.

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Section: Resultssupporting

confidence: 87%

Qualitative-Quantitative Analysis of the „Ciplara“ Purse Seine Catches in the Adriatic Sea

Zorica

Keč

Vuletin

et al. 2020

Croatian Journal of Fisheries

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“…All data analyses were conducted in R version 3.4.3 [39]. Relative condition factor (K n ) was used to assess the condition of the sampled fish and was calculated as described in Jisr, Younes [40] and Le Cren [41]. Two fish were identified as significant outliers (>3 SD and > 95% CI) and therefore removed from the condition and subsequent correlation analysis.…”

Section: Discussionmentioning

confidence: 99%

Diet type influences the gut microbiome and nutrient assimilation of Genetically Improved Farmed Tilapia (Oreochromis niloticus)

et al. 2020

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Nile tilapia, Oreochromis niloticus is the third most commonly farmed finfish species in the world, accounting for nearly 5% of global aquaculture production. In the past few decades much of the success of this species has been attributed to the development and distribution of Genetically Improved Farmed Tilapia (GIFT). Despite the increasing availability of GIFT, the productivity of small-scale farming remains highly variable, particularly in developing nations. Commercial fish-feed pellets can increase fish farm productivity; however, many small-scale farmers rely on other means of feeding fish due to the high cost and limited availability of commercial fish feed pellets. Therefore, understanding how locally-sourced feeds affect the production of GIFT is an important step towards improving feeding practices, particularly for farmers with low financial capital. This study used stable isotope analysis (SIA) and 16S rRNA gene sequencing to compare the effects of a locally-sourced vegetablebased diet and commercial pellet-based diets on the relative condition, nutrient assimilation patterns and gastrointestinal microbiota of GIFT. GIFT fed a locally-sourced diet were smaller, and in a significantly poorer condition than those fed with commercial fish feeds. SIA showed no differences in dietary carbon between the two diets; however, δ 13 C, poor fish condition and the abundance of specific bacterial taxa (of such as Fusobacteria) were correlated. SIA revealed that GIFT fed locally-sourced diets that predominantly consisted of vegetables were significantly enriched in δ 15 N despite a perceived lack of dietary protein. This enrichment suggests that GIFT fed a locally-sourced diet may be supplementing their diet via cannibalism, a behaviour representative of poor farming practice. Overall this study highlights the need to increase the availability of suitable GIFT feeds in developing nations. The development a low-cost feed alternative could improve the success of small-scale GIFT farmers in PNG, increasing both food and income security within the region.

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“…Bar chart 1: S. maderensis sex ratio is underweight, potentially as a result of environmental conditions that inhibit growth [15,16]. Our Krel's values (Table 3) are greater than or equal to 1, indicative of the relatively favourable conditions (biotic and abiotic) of coastal waters of Benin where S. maderensis is fished.…”

Section: Sex-ratiomentioning

confidence: 82%

Length-length Relationship, Weight-Length Relationship, Sex Ratio and factor of Condition of Sardinella maderensis (Lowe, 1838) in South-Eastern Coastal waters of Benin

2020

JMSRO

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Face to decreasing of high-value commercial fishes’ stocks particularly of small pelagic fish in the central part of FAO fishery area 34, the present study has been carried out. From November 2016 to June 2018, monthly 1041 specimens of Sardinella maderensis were collected from southeastern coastal water of Benin randomly. Standard and Total Length, and weight as well as, the sex data were collected.t-test, z-test and ANOVA one tail test were performed to determine whether there was a significant difference between data. With a ratio of 1:1.5 statistically different from 1:1 (p<0.001), female dominate S. maderensis population in Benin. Negative allometry both for the female (2.92) the male (2.88) and combined sexes (2.90) highly different from the consensus, “b=3” (p<0.001) is remarked. The relative condition factor computed from the allometry shows an average environmental condition for S. maderensis growth. Regarding the shared character of S. maderensis stock in CECAF’s central area, these results are important for the next stock assessment..

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Length-weight relationships and relative condition factor of fish inhabiting the marine area of the Eastern Mediterranean city, Tripoli-Lebanon

Cited by 208 publications

References 20 publications

Qualitative-Quantitative Analysis of the „Ciplara“ Purse Seine Catches in the Adriatic Sea

Qualitative-Quantitative Analysis of the „Ciplara“ Purse Seine Catches in the Adriatic Sea

Diet type influences the gut microbiome and nutrient assimilation of Genetically Improved Farmed Tilapia (Oreochromis niloticus)

Length-length Relationship, Weight-Length Relationship, Sex Ratio and factor of Condition of Sardinella maderensis (Lowe, 1838) in South-Eastern Coastal waters of Benin

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