The ability of marine invertebrate larvae to delay their metamorphosis in the absence of adequate environmental cues has been reported for numerous sedentary and sessile species. In the present study, the effect of various substrata and the presence of conspecific adults on the metamorphosis of a mobile species, the crab Chasmagnathus granulata, was evaluated. The duration of the megalopa stage...

Food processing produces large quantities of by-products. Disposal of waste can lead to environmental and human health problems, yet often they can be turned into high value, useful products. Crustacean shell wastes from shrimp, crab, lobster, and krill contain large amounts of chitin, a polysaccharide that may be extracted after deproteinisation and demineralization of the exoskeletons .crusta...

The importance of a broad suite of complex structured habitats as nurseries for estuarine fauna is well recognized. In contrast, recent evidence indicates the nursery value of salt marshes and contiguous unvegetated mud flats for blue crabs are underestimated. To assess the nursery value of salt marsh tidal creeks for the blue crab Callinectes sapidus in coastal North Carolina, USA, we quantifi...

We report on the distribution and abundance of the Iraqi crab Elamenopsis kempi in the Panama Canal and investigate possible interactions of this species with another invader, the North American mud crab, Rhithropanopeus harrisii. While more widespread than R. harrisii, E. kempi is currently limited to four locations within the Canal area: the Miraflores Lake, the Miraflores Spillway, the South...

Despite the widespread use of carbon stable isotopes to distinguish among potential energy pathways in food webs, their usefulness is limited where potential basal carbon sources are numerous and diverse. We measured carbon isotope values of the major fisheries species, the mostly carnivorous Scylla serrata (giant mud crab), and potential basal, autotrophic sources supporting the food web. Conv...

Mud crab Scylla serrata of Kotania Bay and Pelita Jaya Western Seram District, has been harvested by local fishermen for more than 25 years. The mud high economic value, there is always a market this fishery. dependence the forces them to harvest resource extensively. No existing management strategy extensive exploitation leads unsustainable conditions With inadequate data condition, Driver-Pre...

The rate of species loss is increasing at a global scale, and human-induced extinctions are biased toward predator species. We examined the effects of predator extinctions on a foundation species, the eastern oyster (Crassostrea virginica). We performed a factorial experiment manipulating the presence and abundance of three of the most common predatory crabs, the blue crab (Callinectes sapidus)...

Abstract Mangrove forests along the vast coast of West Papua serve as habitat for mud crabs, which are high-value economic resources marketed to various regions in Indonesia. However, intensive utilization impacts sustainability mangrove crab populations, especially orange crabs ( Scylla olivacea ). Exploitation studies need be conducted further use manage resources. This study was six months, ...

Laboratory experiment was conducted to study sex specific total haemocytes count (THC) of mud crab, Scylla serrata (Forskâl, 1775) during the month August, 2019 from estuary river Subarnarekha, West Bengal, India. The quantitative analysis has shown that THC adult female (2.94×107± 0.15 cells/ml) is higher than male (1.89×107± 0.11cells/ml). in seems be associated with reproductive functions fe...