Strong points of the target article by Crump et al. are that it offers clear criteria for judging whether decapods sentient, an effective semi-quantitative grading system this purpose, and astute, critical review literature. It concludes plausibly major subgroups sentient. A minor problem is includes classical, Pavlovian learning as a marker sentience along with more valid complex (e.g., operan...

Samples of benthic macro-fauna were obtained in different habitats along and off the coast of Southern Sinaloa, Gulf of California, Mexico, from 1978 to 1991. Occurrence of species of decapod crustaceans was registered for six habitats, from the interidal to depth of 1200 m. A total of 299 species were collected, belonging to 53 families and including 17 species of Penaeoidea, 45 of Caridea, 6 ...

BACKGROUND The Ice krill, Euphausia crystallorophias is one of the species at the base of the Southern Ocean food chain. Given their significant contribution to the biomass of the Southern Ocean, it is vitally important to gain a better understanding of their physiology and, in particular, anticipate their responses to climate change effects in the warming seas around Antarctica. METHODOLOGY/...

Freshwater habitats of the Caribbean island Jamaica are unique, in so far that they are not inhabited by freshwater Decapoda Reptantia with a long evolutionary history in fresh water, like crayfish or old lineages of freshwater crabs. Instead, a relatively young invasion and radiation of originally coastal crabs from the family Sesarmidae took place, resulting in currently ten endemic sesarmid ...

The morphologies of the cerebral ganglia (brains) of three infraorders of the decapod crustaceans (Astacura-crayfish; Brachyura-crabs; Palinura-spiny lobsters) are described. A common nomenclature is proposed for homologous nerve roots, brain regions, tracts, commissures, neuropils, and cell body clusters.

To examine the distribution of neurogenesis in the central olfactory pathway of adult decapod crustaceans, we labeled, in vivo, six species of decapod crustaceans representing most infraorders (shrimps, spiny lobsters, clawed lobsters, crayfish, hermit crabs, true crabs) with the proliferation marker 5-bromo-2’-deoxyuridine (BrdU). In all tested species a group of small, neuron-like nuclei in t...

Reexamination of the type material of Squilla? kiowana Scott, 1970 and study of additional specimens of the same taxon indicates that it is a mecochirid decapod referable to a new genus, Huhatanka. This assignment brings to five the number of North American species referable to the Mecochiridae.

The decapod Grapsus grapsus is commonly found on oceanic islands of the Pacific and Atlantic coasts of the Americas. In this study, a simple, quick and reliable method for detecting its larvae in plankton samples is described, which makes it ideal for large-scale studies of larval dispersal patterns in the species.