Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 11 of 11
Full-Text Articles in Entire DC Network
High Phytoplankton Growth And Production Rates In Oligotrophic Hawaiian Coastal Waters, E. A. Laws, Dg Redalje, Larry W. Haas, P. K. Bienfang, Rw Eppley, W. G. Harrison, David Karl, J. Marra
High Phytoplankton Growth And Production Rates In Oligotrophic Hawaiian Coastal Waters, E. A. Laws, Dg Redalje, Larry W. Haas, P. K. Bienfang, Rw Eppley, W. G. Harrison, David Karl, J. Marra
VIMS Articles
Plankton biomass, material fluxes, e.g. 14C uptake, and specific growth rates are related quantities. In the course of comparing various methods of measuring these properties in September 1982 off Oahu, Hawaii, we found specific growth rates of 1–2·d−1. Such rates approach the maximum expected values observed in laboratory cultures.
Dynamics Of Microbial Plankton Communities: Experiments In Kaneohe Bay, Hawaii, Mr Landry, Lw Haas, Vl Fagerness
Dynamics Of Microbial Plankton Communities: Experiments In Kaneohe Bay, Hawaii, Mr Landry, Lw Haas, Vl Fagerness
VIMS Articles
No abstract provided.
Juvenile Summer Flounder, Paralichthys-Dentatus, Mortalities In The Western Atlantic Ocean Caused By The Hemoflagellate Trypanoplasma Bullocki : Evidence From Field And Experimental Studies, E M. Burreson, D. E. Zwerner
Juvenile Summer Flounder, Paralichthys-Dentatus, Mortalities In The Western Atlantic Ocean Caused By The Hemoflagellate Trypanoplasma Bullocki : Evidence From Field And Experimental Studies, E M. Burreson, D. E. Zwerner
VIMS Articles
Juvenile summer flounder (140-200 mm) inoculated with T. bullocki by leech vector or syringe in November 1980, and held in flowing seawater tanks all died within 11 weeks. Water temperature during the period of highest mortality ranged from 0.5 to 1.5 °C and may have been a contributing factor in mortality. No uninoculated control fish died even though held in the same tank. Symptoms of disease were anemia, splenomegaly and obvious ascites. Mortality of feral juvenile summer flunder in the lower York River during January 1981 was also attributable to T. bullocki because of identical symptoms to moribund fish in …
Rib Number And Shell Color In Hybridized Subspecies Of The Atlantic Bay Scallop, Argopecten Irradians, John Kraeuter, Laura Adamkewicz, Michael Castagna, Robert Wall, Richard Karney
Rib Number And Shell Color In Hybridized Subspecies Of The Atlantic Bay Scallop, Argopecten Irradians, John Kraeuter, Laura Adamkewicz, Michael Castagna, Robert Wall, Richard Karney
VIMS Articles
Bay scallops, Argopecten irradians (Lamarck), from populations with low rib number (Texas) and high rib number (Virginia) were bred separately and also hybridized. The results suggest that rib number is under genetic control and that the two populations are genetically differentiated. Scallops taken from a population polymorphic for shell color (Massachusetts) were bred in groups, each group containing a single color. The results suggest that color is also under genetic control and is not strongly influenced by the environment
A New Species And A Review Of The Deep-Sea Fish Genus Porogadus (Ophidiidae) From The Western North-Atlantic, Hj Carter, Kj Sulak
A New Species And A Review Of The Deep-Sea Fish Genus Porogadus (Ophidiidae) From The Western North-Atlantic, Hj Carter, Kj Sulak
VIMS Articles
A new species of deep-sea ophidiid, Porogadus situs, is described from deep water off the Bahamas, It differs from its congeners chiefly in having a relatively shorter and deeper head, absence of preopercular and frontal spines and relatively large scales covering the body. A partial osteological description of P. situs is given. porogadus is reviewed and a provisional key to species from the western North Atlantic is presented. The species group containing Porogadus that lack well developed head spines and armature is partially revised on the basis of a study of specimens collected from the Atlantic and Pacific oceans. Of …
Observations On Structure And Evaluation Of Possible Functions Of The Vexillum In Larval Carapidae (Ophidiiformes), Jj Govoni, Je Olney, Df Markle, Wr Curtsinger
Observations On Structure And Evaluation Of Possible Functions Of The Vexillum In Larval Carapidae (Ophidiiformes), Jj Govoni, Je Olney, Df Markle, Wr Curtsinger
VIMS Articles
Elongate dorsal appendages adorn pelagic larvae of many fishes from disparate taxa, among them larvae of the family Carapidae, wherein the singular, elongate appendage is termed a vexillum, The vexillum is a complex larval specialization of the dorsal fin and is characteristic of all carapid genera, It is motile, well vascularized, and innervated by a branch of a cranial nerve with no apparent spinal innervation. Histological studies of Echiodon dawsoni and Carapus bermudensis vexilla show a two layered epidermis with mucous cells, an arteriole and venuole, two myelinated peripheral nerve fascicles, and two collagenous central shafts. No taste buds, free …
Model Studies On The Interactions Among Carbon Substrates, Bacteria And Consumers In A Salt-Marsh Estuary, Rl Wetzel, Rr Christian
Model Studies On The Interactions Among Carbon Substrates, Bacteria And Consumers In A Salt-Marsh Estuary, Rl Wetzel, Rr Christian
VIMS Articles
We have developed a lagrangian computer simulation model to investigate the interactions between dissolved and particulate carbon-substrates of detrital (vascular plants) and phytoplankton origin, microbes attached and free-living in the water column, and consumers of these substrates for a specific estuarine water body: the Duplin River, Sapelo Island, Georgia. Model simulation experiments were directed toward investigating the potential for both carbon resource and heterotrophic grazing as controls on free-living and particle-attached bacterial densities. Given available information from the literature and our own work, we present simulations of the model that approximate what one generally finds in this estuary during summer …
Thermal Tolerance In Embryos And Larvae Of The Bay Scallop Argopecten Irradians Under Simulated Power Plant Entrainment Conditions, D. A. Wright, W. H. Roosenburg, M. Castagna
Thermal Tolerance In Embryos And Larvae Of The Bay Scallop Argopecten Irradians Under Simulated Power Plant Entrainment Conditions, D. A. Wright, W. H. Roosenburg, M. Castagna
VIMS Articles
Thermal tolerance was tested in cleavage stages, trochophores and straight hinge larvae of the bay scallop Argopecten irradians. Experiments were designed to simulate larval entrainment in power plant cooling systems. An 11 (temperature) x 8 (time) matrix was used with temperatures ranging from 20.6 to 43.0 oc and exposure times from 1 min to 6 h. Pooled mortality data from triplicate experiments for each larval stage were subjected to stepwise regression analysis (Yarcsine % mortality on temperature and time). Equations derived from these analyses, comprising first, second and third order terms for temperature and time, were used to generate response …
Species Associations And Community Composition Of Middle Atlantic Bight Continental-Shelf Demersal Fishes, James A. Colvocoresses, John Musick
Species Associations And Community Composition Of Middle Atlantic Bight Continental-Shelf Demersal Fishes, James A. Colvocoresses, John Musick
VIMS Articles
No abstract provided.
Community And Trophic Organization Of Nekton Utilizing Shallow Marsh Habitats, York River, Virginia, Stephen M. Smith, James G. Hoff, Steven P. O'Neil, Michael P. Weinstein
Community And Trophic Organization Of Nekton Utilizing Shallow Marsh Habitats, York River, Virginia, Stephen M. Smith, James G. Hoff, Steven P. O'Neil, Michael P. Weinstein
VIMS Articles
No abstract provided.
Epizootiology Of Diseases Of Oysters (Crassostrea Virginica), And Parasites Of Associated Organisms In Eastern North America, J. D. Andrews
Epizootiology Of Diseases Of Oysters (Crassostrea Virginica), And Parasites Of Associated Organisms In Eastern North America, J. D. Andrews
VIMS Articles
Haplosporidan parasites of oysters have been reported from four continents. Those of the genera Minchinia, Haplosporidium, and Marteilia, which cause serious diseases of oysters, have been intensively studied. Epizootiology of these highly pathogenic species is well known. Life cycles are obscure for all haplosporidans because artificial infections have not been achieved. The high pathogenicity of newly-discovered haplosporidan diseases to native oysters in eastern North America and western Europe may rod:care that these are exohc pathogens paras~t:zmg suscephble oysters not previously exposed to these disease agents. Epizootiology of two haplosporidan pathogens along the middle Atlantic Coast of North America during 25 …