Equitable mariculture: A diagnostic framework for equitable mariculture development in the Western Indian Ocean

Guiding the sustainable development of sectors within the blue economy is critical not only to the global goal of thriving life under water (SDG 14), but also across many other goals related to resources, poverty, health, equity and wellbeing. This is especially the case for island and coastal states, where oceans support daily subsistence, livelihoods and economic opportunities, in the face of poverty and food and nutrition insecurity.

Gender and poverty dimensions in a value chain analysis of milkfish mariculture in Misamis Oriental, Philippines

This paper aims to describe the role of key players in the value chain for milkfish Chanos chanos (Forsskål, 1775) in a mariculture Park in Balingasag, Misamis Oriental in the Philippines with an emphasis on gender dimensions. It also estimates the value additions done by the key players and assesses implications on income distribution. Mapping the chain involved primary data collection through observations, key informant interviews, and focus group discussions. The big, medium and small-scale fish cage operators – 90 % men – are the key players in production.

Optimising methods for community-based sea cucumber ranching: Experimental releases of cultured juvenile Holothuria scabra into seagrass meadows in Papua New Guinea

In this study the authors investigated whether short-term protection from predation improved survival of cultured juvenile sandfish released into a range of seagrass habitats located within potential community sea ranching sites. It also describes the biophysical properties of the habitats and relates these to sandfish growth. The results will assist project managers and community farmers in optimising methods for releases and in selecting suitable sites for sea ranching operations in New Ireland Province (NIP), PNG.

Optimisation of mesh enclosures for nursery rearing of juvenile sea cucumbers

Mariculture of tropical sea cucumbers is promising, but the nursery rearing of juveniles is a bottleneck for farming and sea ranching. We conducted four medium-scale experiments lasting 3–6 weeks, using thousands of cultured juvenile sandfish Holothuria scabra, to optimise nursery rearing in mesh enclosures in earthen seawater ponds and to test rearing in enclosures in the sea. The findings and experimental approach should be valuable for optimising mariculture of other tropical sea cucumbers.

Mariculture development and livelihood diversification in the Philippines

This paper aims to evaluate mariculture as sustainable livelihood diversification option for coastal fishers in the Philippines and guide policy development in this direction. Mariculture in the Philippines refers to the culture of finfishes, shellfish, seaweeds and other commodities in cages, pens, stakes and rafts in marine environment. This paper evaluates the biophysical and socioeconomic contexts in which mariculture operate.

Potential of grouper hybrid (Epinephelus fuscoguttatus x E. polyphekadion) for aquaculture.

The marine grouper species are considered high value food fish in several countries. However, controlled breeding and hatchery production of grouper fingerlings for commercial farming is still in its infancy. Investigations on the growth performance of the brown marbled grouper Epinephelus fuscoguttatus (Forskal), camouflage grouper E. polyphekadion (Bleeker) and their hybrid (E. fuscoguttatus x E. polyphekadion) under hatchery and growout culture conditions indicate the potential of grouper hybrids for aquaculture.

Domestication and species diversification to improve marine aquaculture in Egypt (a prospective view)

The expected more interest of marine aquaculture projects in Egypt will increase the demands of marine seed production for a variety of species. The limited and inconsistent availability of wild finfish and shellfish larvae together with an urgent need of establishing selective breeding programs increased the interest in captive reproduction of finfish and shellfish worldwide. The selection of a species suitable for Egyptian marine aquaculture depends primarily on its marketing value, biology and the ability to produce juveniles in significant numbers for commercial production.

Chemoreception studies in relation to feeding responses in the marine shrimps H. Milne Edwards (Penaeus indicus) and Miers (Metapenaeus dobsonii) .

A study of chemoreception in relation to feeding and other factors involved showed that feeding behavior in shrimps can be triggered by chemical stimuli. However, Penaeus indicus and Metapenaeus dobsoni differ significantly in their chemotactic response to different stimuli.

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