Journals / Turkish Journal of Fisheries and Aquatic Sciences / 2011 / Cilt: 11 - Sayı: 3

Seyhan nehri, zamantı çayı’ndaki (salmo platycephalus bhenke, 1968) populasyonunun büyüme ve üreme özellikleri

Growth and reproductive properties of flathead trout (salmo platycephalus bhenke, 1968) population from zamantı stream, seyhan river, turkey

Pages
367–375
DOI
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AI Summary & Key Takeaways

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

Mean fecundity was 2,398 egg/fish, egg diameters was between 4.387 and 5.408 mm (mean diametrers was 4.782 mm) on mature individuals in reproductive periods.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study the growth and reproductive features of the flathead trout (Salmo platycephalus) found in the IUCN red list of threatened species in Zamantı Stream of Seyhan River were investigated.
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Key Findings & Data:The population was composed of 50.44 % female, 40.71% male and 8.85% immature individuals.
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Conclusion & Impact:Mean fecundity was 2,398 egg/fish, egg diameters was between 4.387 and 5.408 mm (mean diametrers was 4.782 mm) on mature individuals in reproductive periods.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:döllenme gücü · yaş grupları · balık yumurtası

Abstract

In this study the growth and reproductive features of the flathead trout (Salmo platycephalus) found in the IUCN red list of threatened species in Zamantı Stream of Seyhan River were investigated. The population was composed of 50.44 % female, 40.71% male and 8.85% immature individuals. The fork lengths (cm) and total weights (g) of the individuals varied between 11.3 to 40.1 cm and 19.7 to 988.7 g, respectively. Ten age groups (1 to 10) were identified in the population and majority of the sample was between 26.0 to 38.0 cm (69.91%) and 36.28% was between 410 and 660 g in weight. The length-weight relationship for all sample was W = 0.016*FL2.938 with R2 = 0.989. The growth parameters was estimated as; L∞=60.78 cm, K=0.091 and to= -1.72. The condition factors varied from 1.04 to 1.93 and the differences in condition between female and male was not significant (P>0.05). According to GSI and agg dimaters, spawning period was determined between October and December. Mean fecundity was 2,398 egg/fish, egg diameters was between 4.387 and 5.408 mm (mean diametrers was 4.782 mm) on mature individuals in reproductive periods.

Özet

Bu çalışmada endemik bir tür olan ve IUCN listesinde kırmızı listede bulunan Seyhan Nehri, Zamantı Çayı’ndaki Salmo platycephalus populasyonunun büyüme ve üreme özellikleri incelenmiştir. Populasyonun %50,44’ü dişi, %40.71’i erkek ve %8,85’i ise immatür bireylerden oluşmuştur. İncelenen bireylerin çatal boyları 11,3–40,1 cm, total ağırlıkları ise 19,7-988,7 g arasında değişim göstermiştir. Populasyonda 10 yaş grubu ( 1 ve 10 yaşları arasında) tespit edilmiş ve örneklerin çoğunluğu 26,0-38,0 cm boy grubu (%69,91) ve 410-660 g arasındaki bireylerden (%36,28) oluşmuştur. Bütün örneklerde boy-ağırlık ilişkisi, W = 0,016*FL2,938, R2 = 0,989 olarak bulunmuştur. Büyüme parametreleri; L∞ = 60,78 cm, K = 0,091 1/ yıl, t0 = -1,72 yıl olarak hesaplanmıştır. Kondüsyon faktörü 1,04-1,93 arasında değişmiş ve aynı yaş grubunda erkek ve dişiler arasında istatistiki açıdan önemsiz bulunmuştur(P>0,05). Gonadosomatik indeks (GSI) ve yumurta çaplarına göre üreme dönemi Ekim ve Aralık ayları arasında olmuştur. Populasyona ait ortalama fekondite 2.398 yumurta/balık olup üreme dönemindeki olgun bireylerde yumurta çapları 4,387-5,408 mm arasında değişmiş ve ortalama 4,782 mm’dir.

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Cite This Article

KARA, M. C., AKER, A. A., CAN, M. F. (2011). Seyhan nehri, zamantı çayı’ndaki (salmo platycephalus bhenke, 1968) populasyonunun büyüme ve üreme özellikleri. Turkish Journal of Fisheries and Aquatic Sciences, Cilt: 11 - Sayı: 3, 367–375. https://ajindex.com/articles/407872

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