Spawning Articles & Analysis
32 articles found
Reproductive behaviour was recorded using submersibles cameras. A total of 67 spawning events were analysed. The mean duration time that gilthead seabream spent spawning was 54 ± 4 min/day, during which mean number of individual spawning events was 5.6 ± 0.2. ...
ByIRTAmar
Following the larva and PLs from each spawn is essential. If they are PCR positive as determined by routine testing, they should be destroyed and the presence of the pathogen in the broodstock should be considered. ...
Following the larva and PLs from each spawn is essential. If they are PCR positive as determined by routine testing, they should be destroyed and the presence of the pathogen in the broodstock should be considered. ...
America loves farmers, and the data proves it. The Industry of Farming & Agriculture has the highest favorability ratings of all U.S. industries, and farming is regularly ranked one of the most trustworthy professions… so why is there still a major disconnect between food producers and the end consumer? There’s a feeling of “us vs. them” on both sides, and it ...
Abalone reproduce by broadcast spawning—females releasing eggs into the water, where they are fertilized by sperm released by males. ...
Later the catfish will help control the tilapia population by consuming small tilapia that begin to appear when the tilapia you originally stocked reach spawning age (about 3 months). If you plan to rear tilapia fry to fingerling size, either for further stocking or for hand sexing, stock 1-3g fry in properly prepared nursery ponds at 10 fry per m2. ...
ByFishward
Therefore, 7 to 10 days before broodstock or freshly hatched tilapia fall into the pond, start to apply inorganic or organic fertilizers in spawning ponds and fingerling breeding ponds. The cultivated plankton can be used as natural bait to meet various nutrition of tilapia needs. ...
Females lay 300-500 eggs each time, and the interval between spawning is 7-10 days.20.Pterophyllum ScalareScientific name: Pterophyllum scalarePlace of origin: Amazon in South AmericaThis fish has a body length of about 10-15cm and a flat disc shape. ...
When you're packaging fish food, you should always consider whether the labeling guidelines you are using are compliant with federal and state laws. Depending on the quantity you're selling, this can be anything from the usual paper labels added to the bottom of a 50# feed sack, to specific requirements that the label fill a certain percentage of the container's surface. These regulations also ...
ByBESTMIX
For the purpose of preservation of this endangered fish species, rivers in the South-West part of Lake Sevan have been studied and their potential for spawning has been assessed through a relatively ‘cheap’ and ‘time-saving’ approach developed on the basis of hydrophysical, hydrochemical and hydrobiological studies. ...
This meeting, led by the Farm Foundation and the Samuel Roberts Noble Foundation, has helped spawn numerous initiatives, like the Soil Health Institute, with the goal of leveraging these powerful relationships to research and spread soil health. ...
ByEnsia
Fish grow rapidly and mature early, with short life cycle and long spawning season. Thus, Indonesia has favorable condition for fish growth and artificial fecundation. ...
![Improving management support tools for reintroducing bivalve species [Eastern Oyster (Crassostrea virginica Gmelin)] in urban estuaries](https://d32zuqhgcrpxli.cloudfront.net/eyJidWNrZXQiOiJlZS1maWxlcyIsImtleSI6ImZpbGVzLzQ4NzQvaW1hZ2VzLzQ4NzRfMF8yMDIwMDcyMTEzMjQwMjM0NjI3NzguanBnIiwiZWRpdHMiOnsicmVzaXplIjp7ImZpdCI6ImNvbnRhaW4iLCJiYWNrZ3JvdW5kIjp7InIiOjI1NSwiZyI6MjU1LCJiIjoyNTUsImFscGhhIjoxfSwid2lkdGgiOjI0MCwiaGVpZ2h0IjoxNDV9fX0= "Improving management support tools for reintroducing bivalve species [Eastern Oyster (Crassostrea virginica Gmelin)] in urban estuaries")
Biomarkers indicated oyster tissues at one site were normal, the female:male sex ratio was 50:50, and female oysters were in spawning condition. Conversely, oyster tissues at the second site exhibited multiple abnormalities, samples were 100% male, and the incidence of disease was high. ...
Focusing on knowledge transfer between university research facilities, research institutes, industry, and government, the paper profiles key collaborative innovation programmes and documents an emerging trend in innovation strategy that utilises innovation collaboration to spawn startup businesses in China. Although we find no definite pattern of university–industry–government ...
Wild caught brood fish are held in the facility until spawning is complete. Controlled family groupings of young sturgeon are hatched in McDonald jars and reared for one year, first in 0.5 m3 and 1.5m3 combi tanks, then 8 m3 tanks before release. ...
All EE2‐exposed fish were smaller, showed female characteristics and did not spawn. Sex steroid and vitellogenin were highly variable with no detectable treatment‐related differences. Gonadal tissue showed no β‐sitosterol‐related differences in reproductive development and spawning capability, although most EE2‐exposed males had ovarian tissue and were not ...
A study was conducted on Cyprinus carpio spawn (0.002±0.00 g) to determine optimum water temperature and pH. For this purpose, four water pH (5.5, 6.5, 7.5 and 8.5) were selected and each one exposed to three water temperatures (26, 28 and 30°C) for 91 days. ...
For instance, it is estimated that 50% of all commercial fish caught in tropical waters depends on the spawning and nursery functions of mangrove forests. Yet, mangrove mud coasts are under severe pressure. ...
This is one of the examples of new business areas that could be spawned by the shale gale. Stranded gas (natural gas with no market outlet) on land is targeted by the author as a raw material of opportunity. ...
However, these systems are effective only under certain conditions: spawning fish must be protected, and zones must either remain permanently closed or periodic harvesting must be carefully controlled. ...