| morphological and behavioral antipredatory adaptations of decapod zoeae. | zoeae of some species of estuarine decapods are retained in the estuary throughout development while others are exported into nearshore coastal waters. the horizontal migrations of decapod zoeae to coastal waters may have evolved to reduce the probability of encountering planktivorous fishes which are most abundant in the estuary. if so, then the morphological vulnerability of zoeae to fish predation should be inversely related to the number of predators occurring where they develop. six species ... | 1987 | 28311521 |
| coarse woody debris as a refuge from predation in aquatic communities : an experimental test. | this study demonstrates experimentally that coarse woody debris (cwd) can provide refuge from predation in aquatic habitats. in the rhode river subestuary of chesapeake bay, maryland, (usa), we (1) measured the abundance of cwd, (2) examined the utilization of cwd by mobile epibenthic fish and crustaceans, and (3) tested experimentally the value of cwd as a refuge from predation. cwd was the dominant above-bottom physical structure in shallow water, ranging in size from small branches (<2 cm dia ... | 1993 | 28313814 |
| purification of vitellin from grass shrimp palaemonetes pugio, generation of monoclonal antibodies, and validation for the detection of lipovitellin in crustacea. | much effort has been put into developing vitellogenin antibodies against a wide variety of aquatic vertebrate species to study potential estrogen or anti-estrogen endocrine disrupters. little work has been done on endocrine disruption in aquatic invertebrates. although some antibodies have been produced against blue crab and penaeid shrimp lipovitellin, they have only poor cross-reactivity with the important estuarine grass shrimp, palaemonetes pugio. vitellin was purified from eggs, monoclonal ... | 2000 | 11083030 |
| free amino acids in developing stages of two crabs, callinectes sapidus rathbun and rhithropanopeus harrisii (gould). | | 1966 | 6013506 |
| [comparative study of the ultrastructure of androgenic glands from normal and eyestalkless crabs during larval life or after puberty in the species: rhithropanopeus harrisii (gould) and callinectes sapidus rathbun]. | | 1971 | 5157128 |
| alteration of photoresponses involved in diel vertical migration of a crab larva by fish mucus and degradation products of mucopolysaccharides. | photoresponses involved in the descent phase of nocturnal diel vertical migration (dvm) of larvae of the crab rhithropanopeus harrisii were measured in a laboratory system that mimicked the underwater angular light distribution. the test hypothesis was that kairomones from fish that activate zooplankton photoresponses involved in dvm are derived from polysaccharides from the external mucus of fishes. studies considered fish mucus from the mummichog (fundulus heteroclitus) and disaccharides (orig ... | 2000 | 10699215 |
| larval release in brachyuran crustaceans functional similarity of peptide pheromone receptor and catalytic site of trypsin. | studies of crab egg hatching and larval release behavior in the crab,rhithropanopeus harrisii, generated a model describing the process. in the model, carboxyl terminal arginine peptides serve as pheromones that synchronize larval release. in response to the peptides, the female performs stereotypic larval release behavior and casts larvae into the water column. the peptides originate from trypsin-like enzymatic activity as part of the egghatching process. hatching can be simulated experimentall ... | 1990 | 24263733 |