Results 31 to 40 of about 7,407 (219)

The Influence of Eicosapentaenoic Acid on <i>Macrobrachium rosenbergii</i> Broodstock: Ovarian Development, Antioxidant Status, and Lipid Metabolism. [PDF]

open access: yesAquac Nutr
Lipids are essential for crustacean reproduction, supporting broodstock growth and ovarian development. However, studies of n‐3 highly unsaturated fatty acids (HUFAs), particularly eicosapentaenoic acid (EPA), on the growth and ovarian development of prawn broodstock remain limited.
Sun Y   +6 more
europepmc   +2 more sources

Seasonal Variations in Gonadosomatic Index, Hepatosomatic Index, and Condition Factor of Metapenaeus affinis

open access: yesEgyptian Journal of Aquatic Biology and Fisheries
Samples of Metapenaeus affinis were collected from the Iraqi coastal waters between January 1 and December 1, 2021, to investigate the development of sexual maturity. Seasonal variations in gonadal function were observed in males, with peak rates (0.052) recorded in summer and the lowest rates (0.024) in winter.
Intisar Jabbar   +4 more
openaire   +2 more sources

GROWTH OF Geophagus brasiliensis REARED AT DIFFERENT TEMPERATURES AND FEEDING REGIMES

open access: yesBoletim do Instituto de Pesca, 2021
The aim of this study was to evaluate the growth performance of Geophagus brasiliensis rearedb under distinct temperatures (24.3 ± 0.9, 28.1 ± 1.0, and 31.7 ± 0.8°C) and feeding regimes (apparent satiety and a supply of 4% of the total biomass).
Leone de Souza MEDINA   +3 more
doaj   +1 more source

Impact of a mouth parasite in a marine fish differs between geographical areas [PDF]

open access: yes, 2012
Considerable variation exists in parasite virulence and host tolerance which may have a genetic and/or environmental basis. In this article, we study the effects of a striking, mouth-dwelling, blood-feeding isopod parasite (Ceratothoa italica) on the ...
Bandelt   +71 more
core   +1 more source

Length-Weight Relationship, Condition Factor and Fecundity of African Snakehead Parachanna obscura from the Anambra River, South East Nigeria

open access: yesCroatian Journal of Fisheries, 2019
The length-weight relationship, condition factor, fecundity, gonadosomatic and hepatosomatic indices of Parachanna obscura from the Anambra River were determined between December 2015 and June 2016. Eighty-three live samples of P.
Osho Friday Elijah, Usman Ridwan Abiola
doaj   +1 more source

Intake and body weight gain of rats fed different types of unused and used frying oils

open access: yesGrasas y Aceites, 1998
Olive oil, sunflower oil and palm olein, unused or used in repeated potato frying until the oils reached the limit of 25% of polar compounds (PC) were used.
A. M. Pérez-Granados   +2 more
doaj   +1 more source

Toxic effects of ammonia exposure on growth performance, hematological parameters, and plasma components in rockfish, Sebastes schlegelii, during thermal stress [PDF]

open access: yes, 2016
Rockfish, Sebastes schlegelii (mean length 14.53 ± 1.14 cm and mean weight 38.36 ± 3.45 g), were exposed for 4 weeks with the different levels of ammonia in the concentrations of 0, 0.1, 0.5, and 1.0 mg/L at 19 and 24 °C.
Ju-Chan Kang   +4 more
core   +2 more sources

On the Hepatosomatic Index of Holocephalian Fish

open access: yesNIPPON SUISAN GAKKAISHI, 1978
The hepatosomatic index (liver weight/body weight×100, HSI) of holocephalian fish was examined, using two species, ratfish, Hydrolagus colliei, and rabbitfish, Chimaera monstrosa. Compared with HSI in teleostean fishes, the index was remarkably high in these holocephalian fishes. It was 16.96±0.66% in ratfish (14 specimens, body weight: 360-1405 g). In
openaire   +2 more sources

Oocyte growth, gonadosomatic index, hepatosomatic index and levels of reproductive hormones in goldspot mullet Planiliza parsia (Hamilton, 1822) reared in captivity

open access: yesIndian Journal of Fisheries, 2022
Goldspot mullet Planiliza parsia (Hamilton, 1822) is a commercial food fish in South-east Asian countries. Availability of hatchery produced seed is the major bottleneck in the development of aquaculture of this species. Therefore, an attempt was made to develop captive broodstock of P. parsia and understand its reproductive maturation.
Prem Kumar   +3 more
openaire   +1 more source

Variation in biochemical composition during gonad maturation of the tropical abalone Haliotis varia Linnaeus 1758 (Vetigastropoda: Haliotidae) [PDF]

open access: yes, 2007
Biochemical changes in the body components during gonad maturation of the tropical abalone Haliotis varia were investigated using wild collected specimens from the Gulf of Mannar, on the southeast coast of India.
Najmudeen, T M
core   +1 more source

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