Guide to common tidal marsh invertebrates of the northeastern Gulf of Mexico
- R. Heard
- Environmental Science
- 1982
Biogenic Sedimentary Structures Formed By Rays
- J. D. Howard, Taylor V. Mayou, R. Heard
- Geology
- 1 March 1977
ABSTRACT Excavations made by the feeding activity of rays (elasmobranchs) are extremely abundant in tidal flats and in estuarine sand bars and channels of the Georgia coast. Rays make excavations by…
MACROBENTHIC RESPONSES TO NATURAL AND CONTAMINANT-RELATED GRADIENTS IN NORTHERN GULF OF MEXICO ESTUARIES
- C. Rakocinski, Steven S. Brown, G. Gaston, R. Heard, W. W. Walker, J. Summers
- Environmental Science
- 1 November 1997
Effects of pollution on biotic integrity are difficult to identify when correlations occur between environmental gradients and contaminant effects, as they do in estuaries. In this broad-scale study,…
Taxonomy and Life Histories of Two North American Species of " Carneophallus " (= Microphallus ) (Digenea: Microphallidae)
- R. Heard, R. Overstreet
- Biology
- 1983
Pattern and Coloration of Periclimenes rathbunae from the Turks and Caicos Islands, with Comments on Host Associations in Other Anemone Shrimps of the West Indies and Bermuda
- S. Spotte, R. Heard, P. M. Bubucis, R. Manstan, J. A. Mclelland
- Biology
- 1991
The commensal shrimp Periclimenes rathbunae and three of its congeners are reviewed and the first direct evidence that P. yucatanicus leaves the host anemone temporarily to "clean" fishes is offered, discounting a previous suggestion of its role as a noncleaning mimic of P. pedersoni.
ACANTHOCEPHALANS FROM CRABS IN THE SOUTHEASTERN U.S., WITH THE FIRST INTERMEDIATE HOSTS KNOWN FOR ARHYTHMORHYNCHUS FRASSONI AND HEXAGLANDULA CORYNOSOMA
Cystacanths of Hexaglandula corynosoma were discovered in the fiddler crabs Uca spinicarpa and Uca rapax collected in Mississippi and Florida and the first record of an intermediate host for any species of the genus.
Estuarine and Coastal Habitat Use of Gulf Sturgeon (Acipenser oxyrinchus desotoi) in the North-Central Gulf of Mexico
- S. Ross, W. Todd Slack, R. Heard
- Environmental Science
- 6 January 2009
Gulf sturgeon are anadromous, spawning in freshwater and returning to the marine environment to feed. Herein, we document the marine distribution and timing of movement in and out of the marine…
Guide to the Parasites of Fishes of Canada. Part II: Crustacea
- R. Overstreet, R. Heard, L. Margolis, Z. Kabata
- Environmental Science
- 1 July 1989
Austinixa, A New Genus Of Pinnotherid Crab (Crustacea: Decapoda: Brachyura), With The Description Of A-Hardyi, A New Species From Tobago, West Indies
- R. Heard, R. Manning
- Biology
- 1997
Members of Austinixa can be distinguished from species of Pinnixa sensu stricto by the transverse ridge that completely crosses the posterior surface of the carapace, the strongly deflected fingers of the chelae, and the much longer, slenderer, and smoother third walking leg.
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