Journal article
Distribution, abundance, and feeding ecology of decapods in the Arabian Sea, with implications for vertical flux
Deep-sea research. Part II, Topical studies in oceanography, Vol.47(7), pp.1475-1516
2000
Handle:
https://hdl.handle.net/2376/104933
Abstract
Macrozooplankton and micronekton samples were collected on two cruises in the Arabian Sea conducted during the Spring Intermonsoon period (May) and the SW Monsoon period (August) of 1995. Discrete depth samples were collected down to depths of 1000–1500
m. Quantitative gut content analyses were performed on four species of decapod shrimps,
Gennadas sordidus,
Sergia filictum, Sergia creber, and
Eupasiphae gilesii, as well as on the pelagic crab
Charybdis smithii. Of the shrimps, only
S. filictum and
S. creber increased significantly in abundance between the Spring Intermonsoon and SW Monsoon seasons. These four species were found at all depths sampled, and most did not appear to be strong vertical migrators.
G. sordidus and
S. filictum did appear to spread upward at night, especially during the SW Monsoon, but this movement did not include the entire population.
S. creber showed signs of diel vertical migration only in some areas. All four shrimp species except, to some degree,
S. creber lived almost exclusively within the oxygen minimum zone (150–1000
m), and are likely to have respiratory adaptations that allow them to persist under such conditions. Feeding occurred at all depths throughout these species’ ranges, but only modest feeding occurred in the surface layer (0–150
m).
G. sordidus appeared to feed continuously throughout the day and night. Estimated contribution of fecal material to vertical flux ranged from <0.01–2.1% of particulate flux at 1000
m for the shrimps and 1.8–3.0% for
C. smithii.
Metrics
7 Record Views
Details
- Title
- Distribution, abundance, and feeding ecology of decapods in the Arabian Sea, with implications for vertical flux
- Creators
- Sarah L Mincks - Department of Biology and Romberg Tiburon Center for Environmental Studies, San Francisco State University, 1600 Holloway Ave., San Francisco, CA 94132, USAStephen M Bollens - Department of Biology and Romberg Tiburon Center for Environmental Studies, San Francisco State University, 1600 Holloway Ave., San Francisco, CA 94132, USALaurence P Madin - Biology Department, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USAErich Horgan - Biology Department, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USAMari Butler - Department of Biology and Romberg Tiburon Center for Environmental Studies, San Francisco State University, 1600 Holloway Ave., San Francisco, CA 94132, USAPatricia M Kremer - Department of Marine Science, University of Connecticut, 1084 Shennecossett Rd., Groton, CT 06340, USAJames E Craddock - Biology Department, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA
- Publication Details
- Deep-sea research. Part II, Topical studies in oceanography, Vol.47(7), pp.1475-1516
- Academic Unit
- Environment, School of the (CAS)
- Publisher
- Elsevier Ltd
- Identifiers
- 99900546989901842
- Language
- English
- Resource Type
- Journal article