Topic
Physetocaris
About: Physetocaris is a research topic. Over the lifetime, 2 publications have been published within this topic receiving 28 citations.
Papers
TL;DR: A tuft organ, consisting of a group of openended, tubular setae and so probably functioning as a chemosensor, is described, which probably has a sensory function as distance receptors, monitoring water currents and disturbances in the environment surrounding the shrimp.
Abstract: Integumental sensilla were examined in 39 species of meso- and bathypelagic shrimps and 6 species of epibenthic shrimps. A tuft organ, consisting of a group of openended, tubular setae and so probably functioning as a chemosensor, is described. A single tuft with ancillary smaller tufts occur on the dorsal median surface of the fourth abdominal segment and two pairs of tufts occur on the proximal dorsal region of the telson of all oplophorid and pandalid shrimps examined. An additional tuft is present on the fifth abdominal segment of the rare bathypelagic Physetocaris microphthalma Chace. No tuft organs were identified in Processa canaliculata Leach, suggesting that they may not occur in all families of caridean shrimps. Acanthephyrid, systellaspid and pandalid shrimps have the integument completely covered by scales. These are extremely delicate and are normally removed during the process of catching the shrimp through abrasion of the integument by the net. The scales are peculiarly orientated, pointing anteriorly in the anterior half and posteriorly in the posterior half of the body. They probably have a sensory function as distance receptors, monitoring water currents and disturbances in the environment surrounding the shrimp.
27 citations
TL;DR: Among the pelagic caridean crustaceans provided by the Smithsonian Oceanographic Sorting Center for a report on the Oplophoridae collected from the South Pacific were two specimens of Physetocaris microphthalma Chace, taken at positions which considerably extend the geographical range of this rare species.
Abstract: Between July 1962 and December 1972, as part of the U.S. Antarctic Research Program, the USNS "Eltanin" was involved in a systematic, multidisciplinary survey of the Antarctic, Subantarctic, and adjacent regions of the Pacific and Atlantic oceans south of 30°S. Extensive use of a 3-m Isaacs-Kidd midwater trawl formed an integral part of the biological portions of this program. Numerous samples of midwater organisms were collected and subsequently processed by the Smithsonian Oceanographic Sorting Center. Among the pelagic caridean crustaceans provided me by the Smithsonian Oceanographic Sorting Center for a report on the Oplophoridae collected from the South Pacific were two specimens of Physetocaris microphthalma Chace, taken at positions which considerably extend the geographical range of this rare species.
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 1985 | 1 |
| 1977 | 1 |