Cannibal–prey dynamics in young juveniles and postlarvae of the blue crab

Experimental studies on predation and cannibalism of the settlers of Chasmagnathus granulata and Cyrtograpsus angulatus (Brachyura: Grapsidae)

“…Ž . mortalityB PM according to Moksnes et al 1997 . The intact died settlers were not included in the PM.…”

Duration of the pre-settlement period of the mangrove crab Ucides cordatus (Decapoda: Ocypodidae) under laboratory conditions

“…Such burrows are commonly cited as an important factor in decreasing predation rates of post-larvae of other aquatic organisms, such as the lobster Homarus americanus (Milne Edwards) (Barshaw and Lavalli, 1988), as well as other crab species (Heck and Hambrook, 1991;Olmi andLipcius, 1991, Fernandez et al, 1993;Dittel et al, 1996;Moksnes et al, 1997;Hemmi, 2005;Chan et al, 2006;Zeil and Hemmi, 2006), including U. cordatus (Branco, 1993). Megalopae of C. sapidus are not known to excavate burrows in the sediment and therefore they usually experience high predation pressure by fish, shrimp, and even conspecifics of older cohorts, at this point of their ontogeny (Olmi and Lipicius, 1991;Moksnes et al, 1997). Thus, the present results suggested that the release of the megalopae on the sixth day from their molt might increase the survivorship of these larvae under natural conditions.…”

“…Premature releases would include larvae still displaying planktonic behavior, exposing them to greater predation risk (Johns and Mann, 1987;Dittel et al, 1996;Moksnes et al, 1997Moksnes et al, , 1998 as well as reducing the effectiveness of the restocking due to the transport of larvae away from the focal areas. Excessively late releases, on the other hand, entail extensive losses through cannibalism within larviculture tanks (Quinitio and Parada-Estepa 1999), as well as increased rearing costs.…”

Metabolism, Consumption Rates, and Scope for Growth of Porcelain Crab (Petrolisthes galathinus)

“…SFG can be used to determine if a given diet or food source can sustain an organism. Artemia salina nauplii have been used as a proxy for naturally occurring zooplankton in research on feeding behavior and metabolism of anomuran crabs (Gonor and Gonor, 1973;Hartman and Hartman, 1977;Whitman et al, 2001;Barria and Gonzalez, 2008) as well as in the rearing of fish, crustaceans, and mollusks (Warren and Davis, 1967;Webster and Lovell, 1990;Moksnes et al, 1997;Villanueva et al, 2002). In this research we report on consumption rates and metabolism of P. galathinus to assess the potential energetic requirements of crabs in natural systems.…”