The use of the unlabeled antibody enzyme method on serially adjacent sections permitted the demonstration of urotensin II (UII) and urotensin I (UI) immunoreactivities colocalized in most of the cells of the caudal neurosecretory system of Catostomus commersoni. The study of the upper regions of the central nervous system from the spinal cord anterior to the fifth preterminal vertebral region u...

To assess the impact of an estrogenic wastewater treatment plant (WWTP) effluent on fish reproduction, white suckers (Catostomus commersoni) were collected from immediately upstream and downstream (effluent site) of the city of Boulder, CO, WWTP outfall. Gonadal intersex, altered sex ratios, reduced gonad size, disrupted ovarian and testicular histopathology, and vitellogenin induction consiste...

Black spot is a common disease syndrome of freshwater fishes. This study provides information on the rank of density of the black spot agent and opercular bone alterations associated with at least one digenean, Uvulifer sp., infecting native and non-native catostomids and cyprinids of the Upper Colorado River Basin. We evaluated the density rank of pigmented metacercariae and associated alterat...

Narrow barred Spanish mackerel and wolf herring is an important commodity that has commercialized intensively to fulfill the needs of market, both domestic export. Research been conducted from June-August 2020 in Malacca Strait Waters. The purpose this study analyze dynamics population parameters such as growth rate, mortality exploitation rates, recruitment patterns narrow (Scomberomorus comme...

Fish is one of the foods that are favored and consumed by community. However, fish a perishable food commodity requires processing in order to minimize this problem. The unit CV. Brightfood Riung Gunung small-scale produces various kinds processed products using tuna (Thunnus sp) mackerel (Scomberomorus sp). Tuna commodities easily found many markets business so carry out activities these fish....

Fish is a vital food for humans and many animals. We report an environmental monitoring study to assess the trace metals in fish species caught from Arabian Sea and commercially available in the coastal city Karachi, Pakistan. Heavy metals such as copper, iron, lead and cadmium were determined in the skin, fillet and heart of the fish species Pampus argenteus, Epinephelus chlorostigma, Rachycen...

Severe discharge of sewage and industrial effluents into the Persian Gulf causes the deposition of various types of heavy metals and especially lead, cadmium, arsenic and mercury in the muscles of marine animals. The present study was carried out to evaluate the concentration of lead, cadmium, arsenic and mercury in the fish (Scomberomorus commerson), shrimp (Fenneropenaeus indicus) and lobster...