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The Distribution Of The Flagfin Mojarra, Eucinostomus Melanopterus (Pisces: Gerreidae) With Ecological Notes On Texas And Florida Populations, Richard E. Matheson Jr.

Gulf of Mexico Science

No abstract provided.

Reproductive Biology And Developmental Osteology Of The Florida Blenny, Chasmodes Saburrae (Perciformes: Blenniidae), Kevin M. Peters

Gulf of Mexico Science

Reproductive biology and larval development of the Florida blenny, Chasmodes saburrae, are described and figured; notes on life history are given. Adults spawn in the field from early March until early November with peak spawning in April/May and September. Nests, most often found in oyster shells, contain about 120 eggs/cm². Eggs average 0.82 mm diameter and hatch in six days at 27° C. Larvae are planktonic and 3.2-3.7 mm SL at hatching. Laboratory-reared larvae settle to the bottom in 21 days. The skeleton develops throughout larval and early juvenile stages. Adult lateral ethmoids are probably the result …

Larval Development Under Laboratory Conditions Of The Xanthid Mud Crab Eurytium Limosum (Say, 1818) (Brachyura: Xanthidae) From Georgia, Hiroshi Kurata, Richard W. Heard, Joel W. Martin

Gulf and Caribbean Research

Larvae of the xanthid mud crab Eurytium limosum were reared in the laboratory from hatching to first crab stage. Four zoeal stages and one megalops staged were obtained and are described. Complete larval development required about 15 days under culture conditions of 26.0° to 28.0°C and 25 ppt sea water. A long antenna and short antennal exopods consign E. limosum to the Group I xanthid zoeae of Rice (1980). The first stage zoea closely resembles that of Panopeus herbstii and is distinguished by having the dorsal spine strongly recurved at the extremity. Stages 2 to 4 are distinguished from Rhithropanopeus …

Observations On Fishes Previously Unrecorded Or Rarely Encountered In The Northeastern Gulf Of Mexico, Jeffrey T. Williams, Robert L. Shipp

Gulf of Mexico Science

Twenty-one species of marine fishes previously unrecorded or rarely encountered in the northeastern Gulf of Mexico were taken by trawl, dredge, spear or hand capture or observed by SCUBA or research submersible. Biological data are added to the knowledge of all these forms, and several species are shown to have permanent populations in the region.

Origins And Effects Of Spartina Wrack In A Virginia Salt Marsh, Thomas G. Reidenbaugh, William C. Banta

Gulf and Caribbean Research

Movements of mats of tidal wrack (dead Spartina alterniflora) and impacts of the wrack were followed in color infrared aerial photographs of a sloping foreshore salt marsh on Wallops Island, Virginia. Tidal wrack may be stranded in high marsh, where it decomposes, or it may be temporarily stranded at lower elevations. The wrack kills underlying Spartina alterniflora in low marsh and in the transition zone from low to high marsh. Wrack is the major cause of devegetated areas within the marsh, but these areas eventually revegetate, and do not evolve into pans. There are substantial short-term reductions in S. …

Activities Of The Gulf Coast Research Laboratory During Fiscal Year 1979-80: A Summary Report, Harold D. Howse

Gulf and Caribbean Research

Annual report of the Gulf Coast Research Laboratory from fiscal year 1979-1980.

A Partial Bibliography Of Cyprinodon Variegatus (Osteichthyes: Cyprinodontidae), David A. Bengtson

Gulf and Caribbean Research

A partial bibliography of the sheepshead minnow Cyprinodon variegatus Lacépède, 1803, is presented. Scientific works related to systematics and general biology are listed along with references to recent work involving toxicological bioassays. An extensive search of the literature on parasites of C. variegatus was not conducted.

Vertebral Anomaly In Fundulus Similis, Charles S. Manning

Gulf and Caribbean Research

On May 11, 1978, a longnose killifish, Fundulus similis. exhibiting an extreme lordotic, scoliotic condition was collected on the north shore of Big Lagoon in Escambia County, Florida. The specimen was held for observation in a flow-through seawater aquarium for several weeks prior to being preserved and placed in the Gulf Breeze Environmental Research Laboratory Museum (No. AN-2146).

Growth And Residency Of Juvenile Fishes Within A Surf Zone Habitat In The Gulf Of Mexico, Timothy Modde

Gulf and Caribbean Research

Over a 32-month study period, 154,469 fish representing 76 species were collected from the Gulf shore of Horn Island, Mississippi. Fishes collected were identified as either resident or migrant species according to length frequency data. The migrant component, dominated numerically by Anchoa lyolepis, represented the greatest number of species and individuals collected. Resident fishes constituted only six species but comprised 42.0% of all fish captured. The more abundant species residing within the Horn Island surf zone, Trachinotus carolinus, Menticirrhus littoralis, and Harengula jaguana, appeared to utilize this habitat as a nursery for approximately 3 months throughout …

Community Structure And Abundance Of Fishes Inhabiting Oceanic Oyster Reefs And Spoil Islands In The Northeastern Gulf Of Mexico, Gray Bass, Vincent Guillory

Gulf of Mexico Science

No abstract provided.

The Variety And Abundance Of Zooplankton In The Coastal Waters Of Puerto Rico, Marsh J. Youngbluth

Gulf of Mexico Science

During 1973-1974 a total of 160 zooplankton samples were collected in the uppermost 3 m at seven locations within 1 km of the coast of Puerto Rico. Total zooplankton densities ranged from 41 to 7568 organisms/m³. Copepods formed 65-84% of all zooplankton caught; meroplankton constituted 2-17%.

Larger densities (2-21X) of zooplankton tended to be caught at night. Regional differences in the abundance of meroplankton were related to water circulation patterns, community development of benthic organisms, and recruitment from an embayment.

The total abundance of zooplankton around Puerto Rico was similar to densities of zooplankton near other Caribbean Islands.

Trophic Resource Utilization By Three Species Of Sciaenid Fishes In A Northwest Florida Estuary, Peter F. Sheridan

Gulf of Mexico Science

Food habits of Atlantic croaker (Micropogonias undulatus), spot (Leiostomus xanthurus), and sand seatrout (Cynoscion arenarius) were examined in 1976 collections from Apalachicola Bay, Florida. Ontogenetic, spatial, and temporal aspects of diet were considered.

Polychaetes were the main food of croakers over all collections, followed in importance by detritus, fishes, insect larvae, mysids, and infaunal shrimp. Diet specialization occurred with growth of croakers, so that one or two food types dominated the diet. Intraspecific diet correlation using the Spearman Rank Correlation Coefficient, indicated three feeding groups: 10-39 mm fish, 40-39 mm fish, and 90-159 mm …

Records And Range Extensions Of Mycidacea From Coastal And Shelf Waters Of The Eastern Gulf Of Mexico, Kenneth C. Stuck, Harriet M. Perry, Richard W. Heard

Gulf and Caribbean Research

Records of seventeen species of Mysidacea from the Gulf of Mexico are presented. Bowmaniella portoricensis, Pseudomma sp., Siriella thompsonii and Bathymysis renoculata are recorded from the Gulf for the first time. Range extensions within the Gulf are established for Anchialina typica and Mysidopsis furca. Records of Brasilomysis castroi and Mysidopsis almyra from the Atlantic coast of the United States are reported.

Activities Of The Gulf Coast Research Laboratory During Fiscal Year 1978-79: A Summary Report, Harold D. Howse

Gulf and Caribbean Research

Annual report of the Gulf Coast Research Laboratory for fiscal year 1978-1979.

Food Habits Of The Bay Anchovy, Anchoa Mitchilli, In Apalachicola Bay, Florida, Peter F. Sheridan

Gulf of Mexico Science

No abstract provided.

Hypothermal Mortality In Marine Fishes Of South-Central Florida, January, 1977, R. Grant Gilmore, Lewis H. Bullock, Frederick H. Berry

Gulf of Mexico Science

Comparable climatic conditions on both coasts of central Florida resulted in cold induced fish mortalities from 19 January to 13 February 1977. Lethal temperatures, the species killed and their relative numbers killed are compared for the Indian River lagoon, Tampa Bay and Sanibel Island estuarine systems. Fifty-six species were killed in the Indian River area, 36 in the Tampa Bay area, while 19 died at Sanibel Island. The higher species mortality in the Indian River lagoon may be attributed to local hydrological and topographical conditions-and a richer ichthyofauna. Cold-induced mortality was noted in both juvenile and adult tropical fishes. Some …

Biology And Ecology Of The Atlantic Stingray, Dasyatis Sabina (Pisces: Dasyatidae) In North Carolina And Georgia, Frank J. Schwartz, Michael D. Dahlberg

Gulf of Mexico Science

The seasonality, distribution, ecology, movements, catch per unit effort, breeding season, and length-weight relationships for the Atlantic stingray, Dasyatis sabina, trawled in North Carolina (1973 through 1976) and Georgia (1967 through 1969) are compared and discussed. Occurrences in relation to water temperature, salinity, and oxygen content are also reported and compared with previous literature. Dispelling popular belief, D. sabina throughout its range is a minor numerical component of the fish faunas studied.

Food Of The Red Drum, Sciaenops Ocellata, From Mississippi Sound, Robin M. Overstreet, Richard W. Heard

Gulf and Caribbean Research

Examined digestive tracts of the red drum in Mississippi Sound contained mostly decapod crustaceans. Crustaceans accounted for 34 of 59 encountered taxa, more than reported from any other region. Nevertheless, the general diet for 104 fish with food contents out of the 107 examined is similar to that reported for red drum in several other studies from other areas. In addition to crustaceans, fishes followed by polychaetes occurred as the most important items (in 99, 43, and 15% of the drum with food, respectively). Blue crabs occurred in even more drum than the frequently encountered penaeid shrimps. Other commercial species …

Activities Of The Gulf Coast Research Laboratory During Fiscal Year 1977-78: A Summary Report, Harold D. Howse

Gulf and Caribbean Research

Annual report of the Gulf Coast Research Laboratory for fiscal year 1977-1978.

Notes, Larry H. Ogren, Robert W. Hastings, Robert H. Gore

Gulf of Mexico Science

Concealment Behavior of the Spanish Lobster, Scyllarides nodifer (Stimpson), with Observations on its Diel Activity. By L. A. Ogren

Notes of the Occurrence of the Silver Anchovy, Engraulis eurystole, in the Northern Gulf of Mexico. By R. W. Hastings

Studies on Decapod Crustacea from the Indian River Region of Florida VII. A Field Character for Rapid Identification of the Swimming Crabs Callinectes ornatus Ordway, 1863 and C. similis Williams, 1966 (Brachyura, Portunidae). By R.H. Gore

Osteological Notes On The Genus Centropristis (Pisces: Serranidae), Stephen A. Bortone

Gulf of Mexico Science

Osteological examination of Centropristis striata, C. ocyurus and C. philadelphica reveals characters which may be useful in defining the genus. The medially elongate subocular shelf appears unique for the genus among other Serraninae examined. Species may be distinguished on the basis of otoliths, supraoccipital-parietal ridges, shape of vomerine toothpatch and other characters. C. striata shows increased frontal bone ossification (hyperostosis) which is apparently correlated with sex reversal and is a male secondary sex characteristic. C. striata is the most specialized species while C. philadelphica is the least specialized. C. fusculus is retained in the genus until a skeleton is …

Activities Of The Gulf Coast Research Laboratory During Fiscal Year 1976-77: A Summary Report, Harold D. Howse

Gulf and Caribbean Research

Annual report of the Gulf Coast Research Laboratory for fiscal year 1976-1977.

A Selected Bibliography On The Mass Propagation Of Rotifers With Emphasis On The Biology And Culture Of Brachionus Plicatilis, Mobashir A. Solangi, John T. Ogle

Gulf and Caribbean Research

The rotifer Brachionus plicatilis has shown great promise as food for artificially reared fish and crustacean larvae. A list of references on mass propagation of rotifers is presented alphabetically by author. Citations cover and are indexed as culture, diet, ecology, physiology, population dynamics, reproduction, systematics, geographical distribution, food, and biology of rotifers with emphasis on Brachionus plicatilis.

Activities Of The Gulf Coast Research Laboratory During Fiscal Year 1975-76: A Summary Report, Harold D. Howse

Gulf and Caribbean Research

Annual report of the Gulf Coast Research Laboratory for fiscal year 1975-1976.

Location And Time Of Menhaden Spawning In The Gulf Of Mexico, J.Y. Christmas, Richard S. Waller

GCRL Publications

No abstract provided.

An Examination Of Legislation For The Protection Of The Wetlands Of The Atlantic And Gulf Coast States, Anthony J. Haueisen

Gulf and Caribbean Research

The most useful aquatic areas in the world are in serious danger of destruction. The estuaries, where fresh water, land and sea meet in a dynamic and highly productive zone, are today gravely threatened through unwise and unplanned excessive use of their valuable but finite capacities. Estuaries include the coastal zone which is affected by both the run-off of fresh water from the land and the salt water from the sea. This zone includes tidal rivers, marshes, bays and river mouths. The value of these estuarine regions has been well established by biologists. However, this value is fully appreciated by …

Publications Of The Gulf Coast Research Laboratory Museum, Vol. 2, C.E. Dawson

GCRL Publications

This volume consists of the following:

Luis R. Rivas, "A new subspecies of poeciliid fishes of the genus Gambusia from eastern Cuba"

William L. Fink, "A revision of the Gambusia puncticulata complex (Pisces: Poeciliidae)"

William L. Fink, "A revision of the Gambusia nicaraguensis species group (Pisces: PoeciIiidae)"

Review: Taxonomic Guide To The Polychaetous Annelids Of The Northern Gulf Of Mexico Edited By J.M. Uebelacker And P.G. Johnson, Donald J. Reish

Gulf of Mexico Science

No abstract provided.

Effects Of Predation On Infaunal Invertebrates Of Alligator Harbor, Florida, S.M.Z. Naqvi

Gulf and Caribbean Research

A study of the effect of predation on infaunal invertebrates was carried out from July, 1965, to January, 1966, within the intertidal zone of Florida State University Marine Laboratory area at Alligator Harbor, located on the Northeast Gulf of Mexico. The animals were offered protection by wire-baskets of three different mesh sizes. Out of 1,112 infaunal invertebrates, 800 were recovered inside and 312 outside the baskets. The polychaetes, nemertines, phoronids, amphipods and bivalves made up the infauna; the polychaetes comprised the major part of it. Out of 34 species of polychaetes, six are reported from this area for the first …

Habits Of Juvenile Fishes In Two Rhode Island Estuaries, Mohammed Saeed Mulkana

Gulf and Caribbean Research

The basic purpose of this work was to gain information on the possible role of some Rhode Island estuaries as nursery grounds for young migrant and resident species of fishes.

The areas selected were, the lower Pettaquamscutt River and the lower Point Judith Pond, both in the town of Narragansett, Rhode Island. The seining operations were carried through summer and early fall of 1962 when these estuaries are heavily used as nursery grounds. Major features of the occurrence, abundance and distribution of young fishes were deduced by examining samples from seine hauls. Thirty-six species were recorded from the lower river …