This study describes at ultrastructural level the germ cells in the testis of matrinxã (Brycon cephalus) raised in captivity. The specimens 'matrinxã' were maintained in four breeding tanks of 200 m(2), at the Aquaculture Research Center at Vale do Ribeira-CEPAR, from Fishery Institute, in Pariquera-Açu City, São Paulo, Brazil. The samples were collected from March 1994 to February 1996. The te...

Aim of study: To describe the common behaviour flathead grey mullet (Mugil cephalus) under rearing conditions.
 Area Tepic, Mexico.
 Material and methods: Behaviours exhibited by mullets were videorecorded with submersible cameras installed inside three tanks. A total 690 min per day (07:30 - 18:30 h) recorded tank during a week. Afterwards, different behaviours juvenile M. cephalus d...

Egypt has several beaches, as well the Nile River and a few lakes; therefore, it could compensate for lack of protein in red meat with fish. Fish, however, may become source heavy metal exposure humans. The current study was to assess level five toxic metals, lead (Pb), cadmium (Cd), mercury (Hg), arsenic (As), aluminum (Al), six species, namely, Oreochromis niloticus ( O. ) , Mugil cephalus M....

Tissue samples from 1,117 fish of 25 species were collected from 1991 through 1996 at 13 locations along the River Elbe. The principal indicator species were perch (Perca fluviatilis) (n=118), chub (Leuciscus cephalus L.) (n=113) and roach (Rutilus rutilus) (n=138). Mercury (Hg) concentrations in muscle and liver were determined by atomic absorption spectrometry. The liver/muscle index in three...

Pseurotins A₁ (1) and A₂ (2) were isolated from a culture broth of the fungal strain Aspergillus fumigatus WFZ-25 as stereoisomers of pseurotin A (3) in 2011. We also isolated 1 and 2 together with 3 from A. fumigatus OUPS-T106B-5 separated from the marine fish Mugil cephalus. In this study, we re-examined the stereochemistry of 1 and 2 using chemical transformation and the CD spectra, and foun...

In this study, seasonal variations in the fatty acid profiles of the liver and muscle of Squalius cephalus from Tödürge Lake were determined by Gas Chromatography (GC). C22:6 n-3, C20:5 n-3, C20:4 n-6, C18:1 n-9, C18:1 n-7, C16:1 n-7, C18:0 and C16:0 were the principal fatty acids showing the highest levels in the muscle and liver of Squalius cephalus in all seasons. Although C22:6 n-3, which i...

Fatty acid composition of fish is one of the key factors for the evaluation of fish nutritional value and it could be different based on fish species, habitat, nutrition and etc. The aim of the present study was to evaluate the fatty acid composition of five commercially important freshwater fish from the fish market. Studied fish were as follows: Barbell, Luciobarbus pectoralis (Heckel, 1843),...

this investigation was conducted to survey the growth and survival rate, weight average, fcr, and harvestable white leg shrimp biomass during 107 days culture in mono and poly culture earth pond system with mullet fish. nine 600 m2 earth ponds  were prepared and stocked with 20 shrimp post larvae in each pond (mean weight 0.007 ±0.001 g) for three treatments (each with three replication). after...

Molecular phylogenetic relationships among five genera and twelve Mugilidae species were investigated using published mitochondrial cytochrome b and 16S rDNA sequences. These analyses suggested the paraphyly of the genus Liza and also that the separation of Liza, Chelon and Oedalechilus might be unnatural. Moreover, all the species of the genus Mugil plus orthologs of Crenimugil crenilabis clus...