Salinity and preferred nutrient composition of <i>Chaetoceros affinis</i> and <i>Skeletonema costatum</i> were tested. Salinity was tested at 12, 16, 23, 28, and 32 ppt. Three compositions of nitrogen (N), phosphorus (P), and potassium (K) and two on-farm low-cost alternative media sources, cow urine (CU) and hatchery waste water (HWW), were tested to find the suitable NPK ratio and to determine the efficacy of the on-farm media respectively.
In Vembanad Lake and its confluent rivers (Kerala, India), the catches of Macrobrachium rosenbergii (de Man) were reported to have dwindled to a mere 39 t in the 1980s from average landings of 300 t during the 1960s. This decline is due to the impact of a number of human interventions affecting the ecosystem and, hence, the stocks of M. rosenbergii. Monitoring of landings in 1994-1995 and 1995-1996 indicates an improvement in catches. This paper discusses the reasons for the decline and revival in stocks and suggestions for their replenishment.
This paper focuses on relationships between mangroves and coastal resources (fish and shrimps). A review of the literature highlights the lack of quantified relationships in this field. This leads to a definition of priorities for further scientific research.
This report focused on the scope and promotion of women participation in shrimp value chain and find out the factors of gender equity and enhancement of women empowerment along with the value chain of the shrimp industry.
Earlier studies and works done in the first phase of the shrimp quality support project revealed that gender discrimination is widespread in the value chain of shrimp sub-sector. As such the SQSP 2 has the objective to provide training on gender development to the different stakeholders of the shrimp value chain to aware and sensitize them to employ more women to achieve gender equality and mainstream gender in the sub-sector.
A study was undertaken to assess the growth performance of brackishwater tiger shrimp, Penaeus monodon under monoculture in a hardwater seasonal pond in Tamil Nadu, India. A production of 209 kg/ha/110 days was attained at a low stocking density of 1.5/m2.
Naylor et al discuss the environmental impact of aquaculture production on salmon and shrimp.
Details are given of a mathematical model for the derivation of monthly time series of recruitment for the Kuwait Penaeus semisulcatus stock.
A procedure is proposed by which recruit numbers and parental biomass of shrimps stocks can be derived, given a series of catch-per-effort data and estimates of a few ancillary variables. In the Gulf of Thailand, shrimp recruitment decreased with decreasing egg production, but increased with decreasing total (mainly fish) standing stock. The net result of these counteracting effects was an overall increase in shrimp recruitment, attributable to a greatly reduced prerecruit mortality.
The results of a study on length-weight relationships of Penaeus monodon, reared in fertilized ponds in Kerala, India, and fed three different supplementary feeds are presented.