Effects of 17β-estradiol injection on the reproductive efficiency of freshwater crayfish, Astacus leptodactylus (Eschscholtz, 1823)

Harlıoğlu, Muzaffer Mustafa; Yonar, M. Enis; Harlıoğlu, Ayşe Gül; Yonar, Serpil Mişe; Farhadi, Ardavan

doi:10.1080/10454438.2018.1426515

Cited by 9 publications

(3 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, HSI value increased with increasing doses of the hormone 17β-estradiol. This is in line with the research by Harlıoğlu et al (2018) which stated that compared to controls, the GSI and HSI values in female crayfish injected with E2 had increased. According to Nunes et al (2011), Pham and Nguyen (2019), and Kumar et al (2022), the highest HSI values in Sardina pilchardus, Siganus guttatus, and Planiliza parsia were found in the vitellogenesis phase.…”

Section: Discussionsupporting

confidence: 92%

Feminization of Maroon Clownfish (Amphiprion biaculeatus, Bloch 1790) with 17β-Estradiol Hormonal Induction

Sahusilawane

Manalu

Suprayudi

et al. 2023

JIPK

View full text Add to dashboard Cite

Highlight Research The 17β-estradiol hormone induction reduces the percentage of R values in skin and fin color by as much as 50-60%. The 17β-estradiol hormone induction increases total length and body weight, estradiol content, GIS and HIS, and also glucose content. The 17β-estradiol hormone induction shows mature development of the gonadal profile from functional male to functional female. Abstract As maroon clownfish (Amphiprion biaculeatus) is a protandrous hermaphroditic fish, feminization process with 17β-estradiol hormone can be applied to accelerate the female broodstock candidate supply for further spawning effort. This study aimed to evaluate the feminization of A. biaculeatus with 17β-estradiol hormonal induction. This study used a completely randomized design with several hormone dosage, namely P0 (without 17β-estradiol hormone induction), P1 (0.5 μg 17β-estradiol/g body), P2 (1.0 μg 17β-estradiol/g body), and P3 (1.5 μg 17β-estradiol/g body). These treatments were applied with three replications. Five fish composed of α-fish, β-fish, and three γ-fish were reared in each aquarium for 90 days with a flowing water system. The α- and β-fish were then removed, while the γ-fish was injected with hormone. Otohime pellet feed was fed three times a day until apparent satiation. The results showed that the 17β-estradiol hormone could induce 100% of the feminization process of male A. biaculeatus. The dosage of P3 obtained the lowest value percentage of red, green, blue (RGB), but showing the highest total of length and body weight (6.67±0.42 cm and 6.40±0.78 g, respectively), estradiol content (149.73±4.24 ρg/mL), GSI and HSI (0.38±0.07% and 3.59±0.49%), and glucose content (4.67±0.64 mg/dL), followed by more mature gonad profile than other treatments. This condition indicates that fish in P3 treatment has been reversed as functional female. The average survival rate for the treatment was as high as 60%. Therefore, the application of 17β-estradiol hormonal induction is effective for the feminization process in A. biaculeatus as a protandrous hermaphroditic fish.

show abstract

Section: Discussionsupporting

confidence: 92%

Feminization of Maroon Clownfish (Amphiprion biaculeatus, Bloch 1790) with 17β-Estradiol Hormonal Induction

Sahusilawane

Manalu

Suprayudi

et al. 2023

JIPK

View full text Add to dashboard Cite

show abstract

“…For example, Aktas and Gene () found that 17β‐estradiol can affect growth and survival and induce feminization in green tiger shrimp. In addition, more recently, Harlıoğlu, Yonar, Harlıoğlu, Yonar and Farhadi () found that 17β‐estradiol injections significantly increase pleopodal egg and stage 1 juvenile numbers, GSI and HSI in A. leptodctylus (unpublished data, under consideration). Future studies are needed for investigation on the possible effects of 17β‐estradiol on crayfish maturation, ovary development and egg production.…”

Section: External Factorsmentioning

confidence: 92%

Factors affecting the reproductive efficiency in crayfish: implications for aquaculture

Harlıoğlu

Farhadi

2017

Aquac Res

Self Cite

View full text Add to dashboard Cite

In recent years, crayfish aquaculture industry has been developing rapidly in different regions of the world. Crayfish aquaculture is often carried out in dams, lakes and extensive pond systems. There is an increasing demand for crayfish juvenile in aquaculture sector. Therefore, it is important to know which factors affect reproductive efficiency in crayfish. In the present review, factors affecting the reproductive efficiency of crayfish are divided into two main sections, external and internal factors. Dietary lipids, phospholipids, highly unsaturated fatty acids, protein and amino acids, vitamins and carotenoids are important external factors affecting broodstock crayfish reproduction. In addition, various external (i.e. female size, stocking density, temperature, photoperiod, sex ratio) and internal (i.e. endogenous hormones) factors affect the reproductive efficiency in crayfish. This study reviews the present knowledge with the purpose of realizing the factors that are important to reach optimal crayfish nutrition, maturation and reproduction (i.e. pleopodal egg number and quality). This review will particularly be useful for crayfish farmers and crayfish hatchery units.

show abstract

“…The regulation of reproduction in decapods is controlled by a variety of different factors such as water temperature (Farhadi and Harlıoglu, 2018;Yazicioglu et al, 2018), photoperiod (Harlıoğlu and Duran, 2010;Farhadi and Harlıoğlu, 2019b), biogenic amines (Farhadi et al, 2020), gonad stimulating hormone, methyl farnesoate (MF), steroid hormones (Harlıoğlu et al, 2018a), and neuropeptides (Swetha et al, 2011;Harlıoğlu and Farhadi, 2017). Control of male reproduction is a key factor in crustacean aquaculture.…”

Section: Methyl Farnesoate Injection In Crayfishmentioning

confidence: 99%

Effects of methyl farnesoate injection on spermatozoa number and reproductive indices in the narrow-clawed crayfish Pontastacus leptodactylus

BAL

Harlıoğlu

2022

Nauplius

Self Cite

View full text Add to dashboard Cite

In this study, the effect of methyl farnesoate (MF) injection on haemolymph MF levels, spermatozoa production and the reproductive indices of gonadosomatic index (GSI), testicular index (TI) and vasosomatic index (VSI) were investigated in males of Pontastacus leptodactylus (Escholtz, 1823). Sixty male P. leptodactylus were used for the study. They were housed in a total of twelve tanks in their normal reproductive season in 2018 and were fed ad libitum with a pelleted food. Animals were injected once a week for five consecutive weeks, at doses of 250 (G2), 500 (G3) and 1000 (G4) ng MF g -1 of body weight. The doses of the injections, the durations used, and the frequency of administration were determined according to the literature. An increase was observed in gonadosomatic index and spermatozoal number of crayfish injected with 1000 ng of MF g -1 of body weight when compared to control (G1, no MF injection applied) and other experimental groups. In addition, the present study indicated that G4 crayfish had a higher GSI, TI and VSI than control crayfish. There was no difference in the level of hemolymph MF between control and MF injected crayfish. In conclusion, MF injection is effective for inducing increased gonadasomatic index and spermatozoal number in P. leptodactylus.

show abstract

Effects of 17β-estradiol injection on the reproductive efficiency of freshwater crayfish, Astacus leptodactylus (Eschscholtz, 1823)

Cited by 9 publications

References 27 publications

Feminization of Maroon Clownfish (<I>Amphiprion biaculeatus<I/>, Bloch 1790) with 17β-Estradiol Hormonal Induction

Feminization of Maroon Clownfish (<I>Amphiprion biaculeatus<I/>, Bloch 1790) with 17β-Estradiol Hormonal Induction

Factors affecting the reproductive efficiency in crayfish: implications for aquaculture

Effects of methyl farnesoate injection on spermatozoa number and reproductive indices in the narrow-clawed crayfish Pontastacus leptodactylus

Contact Info

Product

Resources

About