Marine Biology Commons^™

Community Structure Of The Macrobenthos In Back Bay, Virginia, Michael F. Lane

Biological Sciences Theses & Dissertations

A study of the subtidal macrobenthos in Back Bay, Virginia was conducted to examine community structure in relation to sedimentary and water quality characteristics. Samples were collected in August and November of 1987 and February and May of 1988 at ten stations.

Three site groups and three temporal groups were identified by cluster analyses of species abundance. Species composition between site groups was relatively homogeneous and eight species accounted for most of the variation between site groups. A comparison of plots of the biological and physical data in discriminant space suggested that variations in the biological data between site groups …

Carbonate Deposits In Marine Fish Intestines: A New Source Of Biomineralization, Patrick J. Walsh, Patricia Blackwelder, Kenneth A. Gill, Eva Danulat, Thomas P. Mommsen

Marine & Environmental Sciences Faculty Articles

Marine teleostean fish are hypo-osmotic to seawater. As part of a multiorgan osmoregulatory strategy they drink seawater and selectively absorb water and minerals across the intestinal epithelium. Notably, divalent cations (Ca²⁺ and Mg^2-) are left behind. We report here that in the gulf toadfish, Opsanus beta, the ionic by-products of osmoregulation in the intestine contribute to de novo formation of a carbonate mineral, tentatively identified as calcian kutnohorite. Our data suggest that intestinal mineralization is a general feature of osmoregulation in marine teleosts and that this process is an unrecognized and possibly substantial source of marine …

On The Seasonal Phytoplankton Concentration And Sea Surface Temperature Cycles Of The Gulf Of Mexico As Determined By Satellites, Frank E. Muller-Karger, John J. Walsh, Robert H. Evans, Mark B. Meyers

Marine Science Faculty Publications

Monthly climatologies of near‐surface phytoplankton pigment concentration and sea surface temperature (SST) were derived for the Gulf of Mexico from multiyear series of coastal zone color scanner (CZCS) (November 1978 to November 1985) and advanced very high resolution radiometer (AVHRR) (January 1983 to December 1987) images. We complement these series with SST from the comprehensive ocean‐atmosphere data set (1946–1987) and Climate Analysis Center (1982–1990), and hydrographic profile data from the NOAA National Oceanographic Data Center (1914–1985). The CZCS ocean color satellite data provide the first climatological time series of phytoplankton concentration for the region. The CZCS images show that seasonal …

Age Growth And Reproduction Of Black Drum, Pogonias Cromis, In Virginia, Stephen J. Bobko

Biological Sciences Theses & Dissertations

The black drum, Pogonias cromis, is of great economic importance to the communities of the lower Eastern Shore of Virginia. Fish are sought both commercially and recreationally during their yearly spring spawning run. Although the number of fish caught each year does not rival other exploited species, it is a directed fishery that partially supports many local fishermen, seafood distributors, marinas, motel owners, and restauranteurs.

Black drum were collected during the fall of 1989 and the spring of 1990 to investigate the population dynamics of fish found in Virginia's Chesapeake Bay and surrounding coastal waters. A total of 235 fish …

The Future For Recreational Fishing Final Report Of The Recreational Fishing Advisory Committee, Recreational Fishing Advisory Committee

Fisheries Management Papers

This report discusses: What Recreational fishing means to Western Australia's estimated 300,000 fishers. Conservation and equality in catch sharing was at the heart of the Committee's investigations into developing strategies for the future management of important recreational fish stocks.

Appendix To The Final Report Of The Rfac. Statistical Summary Of Public Responses To Key Issues., Recreational Fishing Advisory Committee Western Australia.

Fisheries Management Papers

This paper has been published as a separate appendix to the final report of the Recreational Fishing Advisory Committee, and should be read in conjunction with it, and the Committee's discussion paper ("Final report of the Recreational Fishing Advisory Committee - Fisheries Management Paper No. 41 1991). The key issues that were identified in the discussion paper came up under the following headings: 5.1 Environment 5.2 Resource Sharing 5.3 Access for Fishing 5.4 Research 5.5 Management rules 5.6 Enforcement 5.7 Charter fishing 5.8 Funding and licensing 5.9 Community consultation 5.10 Public awareness and community education.

The Role Of Inositol Phosphate Cascade In Visual Excitation Of Invertebrate Microvillar Photoreceptors, Tamara M. Frank, A. Fein

Marine & Environmental Sciences Faculty Articles

The identity of the transmitter(s) involved in visual transduction in invertebrate microvillar photoreceptors remains unresolved. In this study, the role of inositol 1,4,5-trisphosphate (IP₃) was examined in Limulus ventral photoreceptors by studying the effects on the light response of heparin and neomycin, agents that inhibit the production or action of IP₃. Both heparin and neomycin reduce responses to brief flashes of light and the transient component of responses to steps of light, and also inhibit IP₃-induced calcium release, indicating that IP₃ plays a direct role in invertebrate visual excitation. The effects of BAPTA, …

The Study Of Natural Product(S) From Opsanus Tau (Linnaeus), The Oyster Toadfish, Miki Taira

Chemistry & Biochemistry Theses & Dissertations

Opsanus tau (Linnaeus), the Oyster toadfish, commonly inhabits the Chesapeake Bay. The Oyster toadfish has been categorized as a venomous and/or ichthyotoxic fish; however, chemical studies to substantiate these claims have not been forthcoming.

The oyster toadfish has dorsal and opercular spines which are believed to secrete a venom(s). Based on our findings, the oyster toadfish does not secrete venom(s) from these spines.

The oyster toadfish secretes large amounts of a mucus when it is irritated. 3-Octanone was believed to be the major ichthyotoxic component of the mucus from the oyster toadfish. Based on our investigation, 3-octanone is present only …

Fisheries Research Report No 91 - A Synopsis Of The Biology And The Exploitation Of The Australasian Pilchard, Sardinops Neopilchardus (Steindachner) Part Ii: History Of Stock Assessment And Exploitation, W. J. Fletcher

Fisheries Research Reports

This report summarises the studies which have provided information on the population characteristics and exploitation of the pilchard, Sardinops neopilchardus in Australia and New Zealand. This review was undertaken to determine whether existing data could be used to assess the status of Western Australian or other stocks or, alternatively, what additional information was required.

The mean size of pilchards caught varies among locations but, in general, fish are between 140 and 160 mm LCF, corresponding to ages 2 - 5 years. The length-weight relationship also varies between locations

Attempts to initiate pilchard fisheries have been hampered by the lack of …

Species Dominance In The Fish Populations Of The Pearl River At Two Study Areas In Mississippi And Louisiana: 1966-1988, Gerald E. Gunning, Royal D. Suttkus

Southeastern Fishes Council Proceedings

No abstract provided.

Regional Sfc Reports, Southeastern Fishes Council

Southeastern Fishes Council Proceedings

No abstract provided.

Business Meeting Minutes, Southeastern Fishes Council

Southeastern Fishes Council Proceedings

No abstract provided.

Number 23 (February 1991), Southern Fishes Council

Southeastern Fishes Council Proceedings

(February 1991) - Life History of the Brighteye Darter Etheostoma lyceum (Pisces: Percidae), in Terrapin Creek, Kentucky. By D. Bell and T.J. Timmons, 6 pp.

Species Dominance in the Fish Populations of the Pearl River at Two Study Areas in Mississippi and Louisiana: 1966-1988. By G.E. Gunning and R.D. Suttkus, 9 pp. Plus Minutes and Regional Reports.

Life History Of The Brighteye Darter Etheostoma Lynceum (Pisces: Percidae), In Terrapin Creek, Kentucky, Dianna Bell, Tom J. Timmons

Southeastern Fishes Council Proceedings

No abstract provided.

Final Report: Biological Monitoring Of The John U. Lloyd Beach Renourishment: 1989, Richard E. Dodge, Steven C. Hess, Charles Messing

Marine & Environmental Sciences Faculty Reports

In 1987, Nova University (Contractor) with ERM South (Subcontractor) was awarded a contract to provide biological monitoring services for the John U Lloyd State Recreation Area Beach Renourishment Project. A notice to proceed for the initial biological monitoring (Phase I - Preconstruction) was issued in February, 1989. Phase I preconstruction field monitoring took place in February and March, 1989. Phase II post-construction field work took place in August and Spetember, 1989. Phase III post-construction field monitoring took place in August, 1990. Laboratory work occurred from March, 1989 to January, 1991. Renourishment dredging took place from May 16, 1989 to July …

Wombalano Yerang, New Genus And Species Of Corophioid (Crustacea, Amphipoda) From The Great Barrier Reef, Australia, James Darwin Thomas, J. L. Barnard

Marine & Environmental Sciences Faculty Articles

Wombalano is characterized by having a interlocked basket of large spines on the bases of male gnathopod 2; these bases arc curved inward to afford the interlocking capability.

This genus differs from Lemboides Stebbing in the even more shortened inner ramus of uropod 3, in the simple mandibular palp, the fused articles of the flagellum on antenna 2, and the immense basket-shovel formed of spines on articl 2 of male gnathopod 2.

Los Cetáceos Recientes De Venezuela, Aldemaro Romero Jr., Ana Mayayo, A. Ignacio Agudo

Publications and Research

No abstract provided.

Photis Trapherus, A New Elephantine Species From The Caribbean Sea (Crustacea: Amphipoda), James Darwin Thomas, J. L. Barnard

Marine & Environmental Sciences Faculty Articles

Photis trapherus differs from its Californian counterpart, P. elephantis, in characters of male pereopod 6: the smallness of the posteroventral tooth on article 2, the longer article 4 with separated posterior keel and no significant posteroventrallobe, the relatively thinner article 2; the lack of distal expansion on article 4 of pereopod 7; the distinct concavity and defining tooth on the palms of gnathopods 1-2.

Preconstruction Report: Biological Monitoring Of The Hollywood-Hallandale Beach Renourishment: 1991, Richard E. Dodge, Walter Goldberg, Steven C. Hess, Charles Messing

Marine & Environmental Sciences Faculty Reports

In 1990, Nova University (Contractor) with Coral Reef Associates and ERM South (Subcontractors) was awarded a contract to provide biological monitoring services for the Hollywood Hallandale Beach Renourishment Project. A notice to proceed for the initial biological monitoring (Preconstruction) was issued in August, 1990. Preconstruction field monitoring took place in October, 1990. Laboratory work was begun at the start of 1991 following the analysis of samples from the previous John U. Lloyd beach renourishment monitoring. Renourishment dredging is tentatively scheduled to take place starting in April or May, 1991. Sediment is scheduled to be removed and subsequently placed on the …

Two New Species Of Netamelita From The Caribbean Sea (Crustacea: Amphipoda: Gammaridea), James Darwin Thomas, J. L. Barnard

Marine & Environmental Sciences Faculty Articles

The previously described species of Netamelita from California and the Gulf of Mexico are reviewed and two new species, N. brocha and N. tabaci, are described from the Florida Keys and Belize, respectively. A key to the species of Netamelita is provided. In the Caribbean Sea these species live on fine coralgal muds in forereef environments at depths of 30-40 m in a distinctive amphipod assemblage dominated by the genera Garosyrrhoe and Metaceradocus. The two new species of Netamelita were observed to plough through fine surficial flocculent materials, head downward, with urosomal appendages elevated above the sediment surface.

Notes On Some Chaetognaths From Pine Cay, Turks And Caicos Islands (British West Indies), Jerry A. Mclelland, Richard W. Heard

Gulf and Caribbean Research

Seven species of planktonic Chaetognatha - Ferosagitta hispida, Flaccisagitta enflata, F. hexaptera, Krohnitta pacifica, Sagitta bipunctata, Serratosagitta serratodentata, and Pterosagitta draco - were present in plankton samples collected in waters north of Pine Cay, Turks and Caicos Islands, British West Indies. In addition, the epibenthic species Spadella cephaloptera, Paraspadella nana, and P. schizoptera were present, the latter two species associated mainly with shallow clumps of the coralline alga, Neogoniolithon sp., and with sponge-algal communities. One specimen of S. cephaloptera was collected at 35 m from a sand bottom north of the fringing …

On The Annual Cycle Of Equatorial Upwelling In The Central Atlantic-Ocean, Thomas J. Weingartner, Robert H. Weisberg

Marine Science Faculty Publications

The annual cycle of the upper ocean's vertical velocity component (w) on the equator at 28°W is examined by integrating the continuity equation using current meter data from the Seasonal Response of the Equatorial Atlantic Experiment. The annual cycle consists in part of an intense, but brief (∼1 month), upwelling season beginning with the onset of strong easterly wind stress in boreal spring. This upwelling is followed by weaker downwelling during the summer despite the persistence of strong easterly wind stress. The record-length averaged w profile shows that maximum upwelling (0.6 x 10^-3cm s^-1) …

A Description Of The Annual Cycle In Sea Surface Temperature And Upper Ocean Heat In The Equatorial Atlantic, Thomas J. Weingartner, Robert H. Weisberg

Marine Science Faculty Publications

Temperature and velocity time series, obtained by surface moorings during the Seasonal Response of the Equatorial Atlantic Experiment, are used to investigate the role of ocean dynamics upon the annual cycle of equatorial sea surface temperature (SST) and upper ocean heat. The annual cycle in SST is explained by different mechanisms, each operant at different phases of the cycle. The boreal springtime decrease in SST results from upwelling in response to the seasonal intensification of easterly wind stress. This upwelling causes the seasonal formation of the cold tongue along the equator in the central and eastern portions of the basin. …

The Diet And Feeding Habits Of The Southern Stingray, Dasyatis Americana, In Tropical Shallow Marine Habitats, David S. Gilliam

HCNSO Student Theses and Dissertations

The diet and feeding habits of the southern stingray, Dasyatis americana, were investigated through aerial surveys, land-based observations, and quantitative analysis of stomach contents. The field research was conducted in the Exuma Cays Land and Sea Park, central Bahamas. Systematic aerial surveys and the land-based observations were made to determine population density and feeding periodicity in terms of time or tidal phase. In August, 1989, systematic surveys were flown over two cays in the Park; a 12 km² area around Waderick Wells Cay and a 21km² area around Shroud Cay. Both survey areas were flown three times …

Winter 1991, Nsu Oceanographic Center

Currents

No abstract provided.

Spring 1991, Nsu Oceanographic Center

Currents

No abstract provided.

Summer 1991, Nsu Oceanographic Center

Currents

No abstract provided.

Fall 1991, Nsu Oceanographic Center

Currents

No abstract provided.

Food Preference Of Penaeus Vannamei, John T. Ogle, Kathy Beaugez

Gulf and Caribbean Research

The preference of Penaeus vannamei for 15 food items used in maturation was determined. The foods in order of preference were ranked as follows: Artemia, krill, Maine bloodworms, oysters, sandworms, anchovies, Panama bloodworms, Nippai maturation pellets, Shigueno maturation pellets, conch, squid, Salmon-Frippak maturation pellets, Rangen maturation pellets and Argent maturation pellets.

Six New Genera In The Chaetognath Family Sagittidae, Robert Bieri

Gulf and Caribbean Research

The following six new genera of Sagittidae, with type species listed in parentheses, are proposed: Adhesisagitta (Sagitta hispida Conant, 1985), Demisagitta (Sagitta demipenna Tokioka and Pathansali, 1963), Decipisagitta (Sagitta decipiens Fowler, 1905), Tenuisagitta (Sagitta tenuis Conant, 1986), Abacisagitta (Sagitta pulchra Doncaster, 1903), Oculosagitta (Sagitta megalophthalma Dallot and Ducret, 1969).