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Journals / Turkish Journal of Zoology / 2005 / Cilt: 29 - Sayı: 4

Some Biological Aspects of the Himri Barbel, Barbus luteus, in the Intermediate Reaches of the Euphrates River

Ramez Al HAZZAA
Pages
311–315
Publication Date
2005-04-01
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Most fish reached sexual maturity within the second year of age.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Growth; length-weight, standard-, fork-, and total length relationships; age composition; sex ratios; age at first maturity; and fecundity of the himri, Barbus luteus, from different sites along the middle reaches of the Euphrates River were investigated.
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Key Findings & Data:Von Bertalanffy's growth models were Lt = 54.71 (1-e0.110 (t+0.163)), Wt = 1252.833 (1-e0.127 (t+1.825))2.454 in males, and Lt = 56.93 (1-e0.105 (t+0.377)), Wt = 1395.363 (1-e0.107 (t-1.81))2.545 in females.
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Conclusion & Impact:Most fish reached sexual maturity within the second year of age.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Barbus luteus · growth · fecundity

Abstract

Growth; length-weight, standard-, fork-, and total length relationships; age composition; sex ratios; age at first maturity; and fecundity of the himri, Barbus luteus, from different sites along the middle reaches of the Euphrates River were investigated. Von Bertalanffy's growth models were Lt = 54.71 (1-e0.110 (t+0.163)), Wt = 1252.833 (1-e0.127 (t+1.825))2.454 in males, and Lt = 56.93 (1-e0.105 (t+0.377)), Wt = 1395.363 (1-e0.107 (t-1.81))2.545 in females. Isometric growth was identified from length-weight relationships. Younger age groups dominated the catches, with identifiable ages ranged from II to VII years. Sexual ratios were unbiased and did not deviate from 1:1. Most fish reached sexual maturity within the second year of age.

Özet

Growth; length-weight, standard-, fork-, and total length relationships; age composition; sex ratios; age at first maturity; and fecundity of the himri, Barbus luteus, from different sites along the middle reaches of the Euphrates River were investigated. Von Bertalanffy's growth models were Lt = 54.71 (1-e0.110 (t+0.163)), Wt = 1252.833 (1-e0.127 (t+1.825))2.454 in males, and Lt = 56.93 (1-e0.105 (t+0.377)), Wt = 1395.363 (1-e0.107 (t-1.81))2.545 in females. Isometric growth was identified from length-weight relationships. Younger age groups dominated the catches, with identifiable ages ranged from II to VII years. Sexual ratios were unbiased and did not deviate from 1:1. Most fish reached sexual maturity within the second year of age.

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Cite This Article

HAZZAA, R. A. (2005). Some Biological Aspects of the Himri Barbel, Barbus luteus, in the Intermediate Reaches of the Euphrates River. Turkish Journal of Zoology, Cilt: 29 - Sayı: 4, 311–315. https://ajindex.com/articles/177629

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