Waigieu seaperch (Psammoperca waigiensis) is a tropical marine finfish species, which may
inhabit wide range of salinity during the entire life cycle. Regardless of the wide salinity …

Circannual and circadian variations in plasma levels of steroids were estimated by
radioimmunoassay in the female and male catfish, Heteropneustes fossilis, over two …

Wild common carp (C yprinus carpio carpio) is a native valuable but threatened species from
the south‐eastern Caspian Sea in which the endocrine control of its reproduction has not …

Reproductive cycle in female and male Caspian brown trout (Salmo trutta caspius) was
investigated by sampling blood plasma and gonadal tissue from 4-year-old fish. The …

Abstract Plasma estradiol-17β (E 2), testosterone (T), 17α, 20β-dihydroxy-4-pregnen-3-one
(DHP) and 17α, 20β, 21-tri-hydroxy-4-pregnen-3-one (20β-S) levels were measured by …

Gonad and plasma samples were taken from blue cod captured throughout the reproductive
cycle, gonad condition was assessed, and plasma levels of 17 α-hydroxyprogesterone (17 α …

A total of 361 skipjack tuna (Katsuwonus pelamis) between 41.5 and 71.5 cm fork length and
333 yellowfin tuna (Thunnus albacares) between 48 and 150 cm fork length were collected …

The sea bass, Lateoiabrax japonicus is a highly valued fish in aquaculture in South Korea.
For establishment of seedling production of sea bass, 1 japonicus, we examined change of …

The gilthead seabream is a protandrous hermaphrodite seasonal breeding teleost with a
bisexual gonad that offers an interesting model for studying the two first reproductive cycles …

The relationship between sex steroid hormone profiles in plasma and gonadal function in
hagfish is poorly understood. In the present study, plasma concentrations of estradiol …