Control of puberty in farmed fish
WebJan 13, 2014 · Early sexual maturation in farmed salmon inhibits growth, reduces product quality and can lead to more disease and higher mortality. Salmon producers seek the … WebApr 5, 2024 · Lack of control on puberty and maturation is a serious problem in intensive fish farming. Kjetil Hodne’s PhD project has studied the mechanisms behind the differentiated synthesis and release of the pituitary hormones follicle-stimulating hormone (FSH) and luteinizing hormone (LH), which regulate maturation.
Control of puberty in farmed fish
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WebApr 1, 2024 · In two swordtail species of the genus Xiphophorus, onset of puberty in males and females, fecundity in females, and adult size in males are modulated by sequence polymorphism and gene copy-number... WebPuberty comprises the transition from an immature juvenile to a mature adult state of the reproductive system, i.e. the individual becomes capable of reproducing sexually for the first time, which implies functional competence of the brain–pituitary–gonad (BPG) axis. Early puberty is a major problem in many farmed fish species due to negative effects on …
WebSep 15, 2015 · Fish species show a wide range of ages and sizes at puberty. In farmed fish, the growth rates are normally higher than in wild fish, due to greater feed availability. This is also accompanied by higher levels of adiposity, which in combination lead to a reduction in the age of puberty when fish are reared in captivity (Taranger et al., 2010). WebMar 15, 2024 · Precocious male maturation causes reduced welfare and increased production costs in Atlantic salmon (Salmo salar) aquaculture. The pituitary produces and releases follicle-stimulating hormone (Fsh), the gonadotropin triggering puberty in male salmonids. However, little is known about how Fsh production is regulated in Atlantic …
WebMay 27, 2024 · Based on the average wet body mass of immature fish and losses due to sexual maturation and mortality, mono-sex stocks of male triploid fish gave the highest return per 100 juveniles stocked ... WebAug 10, 2024 · In this general pattern, there are some alternative strategies, developed mainly by males, that can be very successful in the natural environment, such as, 1) …
WebJun 11, 2024 · In farmed fish, the growth rates are normally higher than in wild fish, due to greater feed availability. This is also accompanied by higher levels of adiposity, which in combination lead to a reduction in the age of puberty when fish are reared in captivity ( Taranger et al., 2010 ).
WebPuberty onset is controlled by activation of the BPG axis, and a range of internal and external factors are hypothesised to stimulate and/or modulate this activation such as … thin walled brass tubingWebNov 4, 2015 · Taranger, G. L. et al. Control of puberty in farmed fish. Gen. Comp. Endocrinol. 165, 483–515 (2010) Article CAS PubMed Google Scholar ... thin walled bushingsWebMay 13, 2009 · Age at puberty can be controlled by selective breeding or control of photoperiod, feeding or temperature. Monosex stocks can exploit sex dimorphic growth … thin walled conduitSimilarly to other vertebrates, the androgen testosterone (T) is present in teleost … From 6 to 48 months of age, diploid fish grew in length from 15.7 ± 0.07 to 51.5 ± … The variation in plasma E 2 levels among treatments at the various spawning … The adipose fin was removed to facilitate identification of these fish in the … This study took place in CULMAREX, S.A., a fish farm in Águilas, Murcia, Spain … They began spawning in captivity at Ardtoe within 3 years. Four years after capture … 1.. IntroductionGrowth hormone (GH) secretion from the anterior pituitary is … Today, approximately one-third of the annual fish catch of ∼ 3 million tonnes in … By virtue of having more females, triploid turbot biomass was ∼14% higher than … We have recently cloned the full-length cDNAs of the two growth hormone … thin walled cup like structure of nephronWebFeb 21, 2014 · In Norway Studies of 3-cm-long medakas (also known as Japanese rice fish) are generating new insight into how to delay the onset of puberty in farmed salmon. … thin walled cylinderWebPuberty onset is controlled by activation of the BPG axis, and a range of internal and external factors are hypothesized to stimulate and/or modulate this activation such as … thin walled container market size in indiaWebSearch for: Control of puberty in farmed fish. Jennifer Mayer Download HTML Embed thin walled cylinder buckling