Brown Rock Shrimp
Sicyonia brevirostris
Summary 2
Sicyonia brevirostris, the brown rock shrimp, is a species of prawn. It is found along the coasts of the western Atlantic Ocean and Gulf of Mexico from Norfolk, Virginia to Yucatán, including Cuba and the Bahamas.
Description 3
Sicyonia brevirostris is the largest of the rock shrimp occurring in the vicinity of the Indian River Lagoon, Florida, with mature individuals measuring more than 10 cm (4 inches) carapace length (CL).
Distribution 4
Off Norfolk, Va. To Cuba
Size 5
Maximum total length is 15.3 cm (6.02 inches); however, most individuals found in shallow water areas are less than 5 cm (2 inches). Males reach approximately 11.6 cm (4.5 inches) while females reach 11.8 cm (4.6 inches).Typical grow rates are approximately 2-3 mm CL per month in juveniles, and 0.5 - 0.6 mm CL per month in adults. Females grow slightly faster than males, but males gain weight faster in proportion to CL in all class sizes (Kennedy et al. 1977). Growth is more rapid in summer months. Maximum life span is approximately 20 - 22 months (Kennedy et al. 1977).
Reproduction 6
Female maturation size ranges from 17 - 24 mm (0.6 - 0.9 inches) CL (carapace length) or larger (Kennedy et al. 1977). Males mature when they reach approximately 18 mm CL (0.65 inches). Rock shrimp have separate sexes, with copulation occurring between hard-shelled individuals. Fecundity, as in many shrimp species, is high, and increases with increased body size. Fertilization takes place as eggs and sperm are simultaneously expulsed from the female. Spawning occurs year-round, with females releasing eggs 2 -3 times during the year, but peaks between November and January (Kennedy et al, 1977). Larvae are present in the water column throughout they year. Kennedy et al. (1977) identified 5 ovarian stages in the brown rock shrimp, one more than was found in penaeid shrimp: 1)Undeveloped; 2) Developing; 3) Nearly Ripe; 4) Ripe; and 5) Advanced Ripe.
Link to Access Genomic Data 7
http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?id=290332&lvl=0
Sources and Credits
- (c) Bernadette, some rights reserved (CC BY-NC), uploaded by Bernadette
- Adapted by matbio from a work by (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Sicyonia_brevirostris
- Adapted by matbio from a work by (c) Smithsonian Marine Station at Fort Pierce, some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/11526763
- Adapted by matbio from a work by (c) WoRMS for SMEBD, some rights reserved (CC BY), http://eol.org/data_objects/28471136
- Adapted by matbio from a work by (c) Smithsonian Marine Station at Fort Pierce, some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/11526768
- (c) Smithsonian Marine Station at Fort Pierce, some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/11526767
- (c) Emily Rose Sharkey, all rights reserved
