In ecotoxicological testing, there are few studies that report on reproductive output (egg production) of marine or estuarine fish. Cunner (Tautogolabrus adspersus) were studied as a potential model species to evaluate the impact of pollutants with estrogenic activity on reproduction in estuarine fish populations. Cunner inhabit marine and estuarine areas where contaminant discharges are likely...

This study used a two-phase feeding trial to determine the influence of selected dietary prebiotics and probiotics on growth performance, feed utilisation, and morphological changes in snakehead (Channa striata) fingerlings as well as the duration of these effects over a post-experimental period without supplementation. Triplicate groups of fish (22.46 ±0.17 g) were raised on six different trea...

Ann-Chang Cheng, Chia-Yung Chen, Chyng-Hwa Liou, and Ching-Fong Chang (2006) Effects of dietary protein and lipids on blood parameters and superoxide anion production in the grouper, Epinephelus coioides (Serranidae: Epinephelinae). Zoological Studies 45(4): xxx-xxx. The objectives of this study were to investigate the effects of dietary lipid and protein levels on blood parameters, body compos...

Condition indices are key predictors of health and fitness in wild fish populations. Variation body condition, therefore, can be used to identify stressful conditions that may impact endangered species, such as California’s endemic Delta Smelt (Hypomesus transpacificus McAllister, 1963). Here, we examined spatiotemporal variation the condition > 1600 collected over nine years (2011–2019), a per...

Pollock Pollachius virens (also known as Saithe) modify their feeding habits when including in diet uneaten feed pellets from salmon aquaculture sea cages. To determine the influence of farms on Pollock, multivariate and univariate analyses were conducted trace element signatures muscle liver tissues. Sample fish caught vicinity control areas (>3-km distance farms) coast Hitra Island (western N...

The barred sand bass Paralabrax nebulifer is a commercially important fish off the west coast of Baja California Sur. To assess diet this species and variations as function sex reproductive condition, 60 specimens were captured using traps during seven seasonal sampling trips from August 2016 to 2018 in an adjacent area Magdalena Bay, Sur, Mexico. stomach contents 50 obtained (23 males 27 femal...

The fertilized eggs of Japanese medaka (Oryzias latipes) were exposed to estrone (E1) at 5-5000 ng L(-1) for 15 d, and the hatched fry were exposed continuously to the same concentrations for the additional 15 d. Adverse effects on hatchability, time to hatching, and gross abnormalities occurred at 50 ng L(-1) or above. Then the fry were divided into a continual exposure group, and a water reco...

The effect of live yeast Rhodoturula glutinis was evaluated on juvenile Oreochromis niloticus cultivated in a Biofloc system. Growth performance and the expression innate response relevant oxidative stress genes were after 12-week feeding trial. Three experimental treatments conventional tilapia culture (control), (BFT), with addition R. 1×106 CFU g-1 (BFT+Rg), four replicates per treatment. In...

Japanese sea perch, Lateolabrax japonicus is an economically important marine fish and widely cultured in coastal area of China. In recent years, ammonia poisoning has seriously affected the yield quality but data on its tolerance sparse. This study used a sequential approach to evaluate how perch tolerate acute chronic exposure. First, we estimated effects (16.08 ± 0.12 g) calculated 96-h LC50...

We collected adult cave swallows (Petrochelidon fulva) and cliff swallows (P. pyrrhonota) during the breeding seasons in 1999 and 2000 from eight locations along the Rio Grande from Brownsville to El Paso (unless otherwise specified, all locations are Texas, USA) and an out-of-basin reference location. Body mass, spleen mass, hepatosomatic index (HSI), gonadosomatic index (GSI), thyroxine (T4) ...