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Articles 271 - 300 of 554
Full-Text Articles in Marine Biology
Gordon Pennington Gunter, 1909-1998, W. David Burke
Gordon Pennington Gunter, 1909-1998, W. David Burke
Gulf and Caribbean Research
Memorial of Gordon Gunter, former director of the Gulf Coast Research Laboratory and the first editor of Gulf Research Reports.
Effects Of Diflubenzeron On The Ontogeny Of Phototaxis By Palaemonetes Pugio, J.E.H. Wilson, R.B. Forward Jr., J.D. Costlow
Effects Of Diflubenzeron On The Ontogeny Of Phototaxis By Palaemonetes Pugio, J.E.H. Wilson, R.B. Forward Jr., J.D. Costlow
Gulf and Caribbean Research
The phototaxis by larvae of the grass shrimp Palaemonetes pugio that hatched from embryos which were exposed to a single pulse concentration of diflubenzuron (DFB; Dimilin®) was quantified. Stage IV embryos (6-day-old) were exposed to 0.5 µg/L of DFB for 4 days followed by transfer into clean seawater for the rest of the incubation period. The photoresponses of light-adapted larvae from untreated embryos and embryos treated with 0.5 µg/L DFB were monitored from 1 day through 8 day post hatch for phototactic responses to 500 nm light. Larvae from untreated embryos exhibited strong positive phototaxis at high light intensities (3 …
A Survey Of The Reef-Related Medusa (Cnidaria) Community In The Western Caribbean Sea, E. Suarez-Morales, L. Segura-Puertas, R. Gasca
A Survey Of The Reef-Related Medusa (Cnidaria) Community In The Western Caribbean Sea, E. Suarez-Morales, L. Segura-Puertas, R. Gasca
Gulf and Caribbean Research
The species composition, distribution, and abundance of medusae collected during a 4-day plankton survey in a reef system of the Mexican Caribbean were studied. Highest mean medusae abundance was observed over the fore-reef zone and in daytime samples. Lowest abundances occurred in the reef lagoon and at dusk. Seventeen species were identified, with Liriope tetraphylla, Aglaura hemistoma, Cubaia aphrodite, and Sarsia prolifera being the most abundant. They belong to a group of medusae dominant along the world's second largest barrier reef. Cluster analysis revealed primary (fore-reef) and secondary (reef lagoon, channel) oceanic groups, showing the strong oceanic …
An Annotated Checklist And Key To Hermit Crabs Of Tampa Bay, Florida, And Surrounding Waters, Karen M. Strasser, W. Wayne Price
An Annotated Checklist And Key To Hermit Crabs Of Tampa Bay, Florida, And Surrounding Waters, Karen M. Strasser, W. Wayne Price
Gulf and Caribbean Research
Fourteen species of hermit crabs, belonging to 5 genera, were identified from 35 stations in Tampa Bay and adjacent continental shelf waters. Ninety-two samples were taken from the intertidal zone to 15 m with a variety of gear including dip nets, trawls, dredges, and hand collections using SCUBA. Pagurus maclaughlinae, Pagurus longicarpus, and Pagurus pollicaris were distributed throughout the bay. These species were often sympatric, and were commonly found in seagrass beds, sandy substrates, and sand/mud substrates, respectively. Clibanarius vittatus, Pagurus gymnodactylus, and Pagurus stimpsoni inhabited the higher salinity waters of the bay entrance. Paguristes sp., …
The Planktonic Copepods Of Coastal Saline Ponds Of The Cayman Islands With Special Reference To The Occurrence Of Mesocyclops Ogunnus Onabamiro, An Apparently Introduced Afro-Asian Cyclopoid, Eduardo Suarez-Morales, Jerry A. Mclelland, Janet Reid
The Planktonic Copepods Of Coastal Saline Ponds Of The Cayman Islands With Special Reference To The Occurrence Of Mesocyclops Ogunnus Onabamiro, An Apparently Introduced Afro-Asian Cyclopoid, Eduardo Suarez-Morales, Jerry A. Mclelland, Janet Reid
Gulf and Caribbean Research
Taxonomic analysis of the copepod specimens collected from 29 Cayman Island ponds revealed the presence of ten species including the nearly ubiquitous cyclopoid Apocyclops panamensis. This species was widespread throughout the islands, being collected at 27 of the sampling sites. Another common calanoid, Mastigodiaptomus nesus, occurred at nine sites on Grand Cayman and one on Cayman Brac. A cyclopoid of Afro-Asian origin, Mesocyclops ogunnus, was collected at two nearly fresh water sites on Grand Cayman and was considered to be a recent introduction. Because of its known adaptability to fluctuating environmental conditions, it is likely that M. …
Gulf Estuarine Research Society Spring 1999 Meeting Abstracts
Gulf Estuarine Research Society Spring 1999 Meeting Abstracts
Gulf and Caribbean Research
Meeting abstracts from the Spring 1999 meeting of the Gulf Estuarine Research Society.
Atlas Of Fishes Of The St. Louis Bay Drainage In Southern Mississippi, Royal D. Suttkus, David A. White, Maurice F. Mettee
Atlas Of Fishes Of The St. Louis Bay Drainage In Southern Mississippi, Royal D. Suttkus, David A. White, Maurice F. Mettee
Gulf and Caribbean Research
This atlas presents a comprehensive report on fishes collected in the St. Louis Bay drainage between October 1950 and October 1989, prior to several recent years of accelerated commercial and residential development. A total of 261 samples taken at 126 sites from headwaters of major streams to the mouth of St. Louis Bay resulted in the collection of 75,625 specimens representing 124 species plus 2 hybrid sunfish combinations. Precise locality data are given for each collection site, with number of species and specimens taken at each site, followed by a total list of species taken at each site. A distribution …
Recent Trends In Water Clarity Of Lake Pontchartrain, J.C. Francis, M.A. Poirrier
Recent Trends In Water Clarity Of Lake Pontchartrain, J.C. Francis, M.A. Poirrier
Gulf and Caribbean Research
An analysis of Secchi disk transparency observations from 3 sites on the Lake Pontchartrain Causeway indicates that water clarity has increased at the north shore and mid-lake sites, but has not changed at the south shore site. Louisiana Department of Environmental Quality data from 1986 through 1995 were used in the analysis. Further analysis indicates that the increased transparency was not caused by changes in salinity or wind speed. The best explanation for the observed increase is the cessation of shell dredging in 1990.
Parasitization Of Callinectes Rathbunae And Callinectes Sapidus By The Rhizocephalan Barnacle Loxothylacus Texanus In Alvarado Lagoon, Veracruz, Mexico, Fernando Alvarez, Adolfo Gracia, Rafael Robles, Jorge Calderon
Parasitization Of Callinectes Rathbunae And Callinectes Sapidus By The Rhizocephalan Barnacle Loxothylacus Texanus In Alvarado Lagoon, Veracruz, Mexico, Fernando Alvarez, Adolfo Gracia, Rafael Robles, Jorge Calderon
Gulf and Caribbean Research
Callinectes rathbunae and CalIinectes sapidus in Alvarado Lagoon, Mexico, were sampled monthly for one year to determine the extent of parasitization by the rhizocephalan cirripede Loxothylacus texanus. Prevalence levels. host sex ratio, carapace width-weight variation, and distribution of the number of parasites among hosts were analyzed. Loxothylacus texanus was present almost exclusively in C. rathbunae with a mean prevalence of 7.58%, while less than 1% of all C. sapidus were parasitized. Callinectes rathbunae constitutes a new host record for this parasite. A study of infection revealed significant variation in prevalence and host size throughout the study period. The sex …
Variations In The Ventral Ciliature Of The Crustacean Symbiont Hyalophysa (Ciliophora, Apostomatida) From Mobile Bay And Dauphin Island, Alabama, Stephen C. Landers, Michael A. Zimlich, Tom Coate
Variations In The Ventral Ciliature Of The Crustacean Symbiont Hyalophysa (Ciliophora, Apostomatida) From Mobile Bay And Dauphin Island, Alabama, Stephen C. Landers, Michael A. Zimlich, Tom Coate
Gulf and Caribbean Research
Apostome ciliates are symbiotic organisms whose life cycles are complex and involve specific feeding, divisional, migratory, and phoretic stages. In this study we examined apostome trophonts (the diagnostic stage) from a variety of crustacean hosts in the Mobile Bay and Dauphin Island, Alabama, area. The hosts were grass shrimp (Palaemonetes pugio and P. paludosus), striped hermit crab (Clibanarius vittatus), blue crab (Callinectes sapidus), and pink shrimp (Farfantepenaeus (=Penaeus) duorarum). A number of similar but distinct morphotypes of apostomes were present, those corresponding to descriptions of species of Hyalophysa as well …
Food Habits And Dietary Overlap Of Newly Settled Red Drum (Sciaenops Ocellatus) And Atlantic Croaker (Micropogonias Undulatus) From Texas Seagrass Meadows, M. Andres Soto, G. Joan Holt, Scott A. Holt, Jay Rooker
Food Habits And Dietary Overlap Of Newly Settled Red Drum (Sciaenops Ocellatus) And Atlantic Croaker (Micropogonias Undulatus) From Texas Seagrass Meadows, M. Andres Soto, G. Joan Holt, Scott A. Holt, Jay Rooker
Gulf and Caribbean Research
Food habits and dietary overlap of newly settled larval and juvenile red drum and Atlantic croaker were examined during the period when the two species co-occur in seagrass nurseries. A total of 274 red drum (4.00 - 19.99 mm SL) and 205 Atlantic croaker (8.00 - 17.99 mm SL) were used for this analysis. Of the red drum stomachs examined, 8.4% were empty while 28.8% of Atlantic croaker stomachs contained no food. Major prey items identified for both species were calanoid copepods, harpacticoid copepods and mysid shrimp across all size classes. Ontogenetic trophic niche shifts were detected for red drum …
Feeding Of Sciaenid (Pisces: Sciaenidae) Larvae In Two Coastal Lagoons Of The Gulf Of Mexico, Alberto Ocana-Luna, Marina Sanchez-Ramirez
Feeding Of Sciaenid (Pisces: Sciaenidae) Larvae In Two Coastal Lagoons Of The Gulf Of Mexico, Alberto Ocana-Luna, Marina Sanchez-Ramirez
Gulf and Caribbean Research
Stomach contents analyses showed that Leiostomus xanthurus (8.50-12.90 mm SL) had a wide trophic spectrum (15 food categories) with copepods and eggs of invertebrates as main components. In contrast, Micropogonias undulutus (6.65-12.20 mm SL) ingested only six food categories (copepods, eggs of invertebrates, crustacean nauplii, bamacle nauplii, amphipods and other crustaceans). There is an overlap of 73.2 to 83.0% in the diet of these two species. Bairdiella chrysoura (1.17-1.92 mm SL) fed primarily on juvenile pelecypods, crustacean nauplii, eggs of invertebrates, including gasteropods and copepods. Cynoscion nebulosus (1.50-2.42 mm SL) ingested juvenile pelecypods, copepods, crustacean nauplii, eggs of invertebrates and …
Effects Of The Burrowing Brittlestar, Microphiopholis Gracillima (Echinodermata: Ophiuroidea), On The Flux Of Lithium, An Inert Tracer, Across The Sediment-Water Interface, Timothy H. Shepherd, Stephen E. Stancyk, Timothy J. Shaw
Effects Of The Burrowing Brittlestar, Microphiopholis Gracillima (Echinodermata: Ophiuroidea), On The Flux Of Lithium, An Inert Tracer, Across The Sediment-Water Interface, Timothy H. Shepherd, Stephen E. Stancyk, Timothy J. Shaw
Gulf and Caribbean Research
Burrowing and ventilation activities of infaunal organisms have been shown to affect geochemical processes in sediments and at the sediment-water interface. Although burrowing brittlestars are dominant in many benthic environments, their role in these processes is poorly known. We tested the effect of the amphiurid brittlestar, Microphiopholis gracillima, on the flux of lithium ion from the sediment to the overlying water by using sediment cores with false bottoms for continuous flow of a Li+1-seawater solution. Brittlestars at densities of 300 and 600 individuals m-2 caused a twofold increase in the rate that Li was transported through …
Gulf Estuarine Research Society Spring 1998 Meeting Abstracts
Gulf Estuarine Research Society Spring 1998 Meeting Abstracts
Gulf and Caribbean Research
The following abstracts were received by January 5,1998; and these papers will be presented at the meeting by authors whose names are underlined. Special presentations also will be given by Harold Stevenson (Publishing and the Editorial Process of Estuaries), Chris D'Elia (Federal Budgeting and Success in the Grant Process), and Gene Turner (Estuarine Signatures for the Gulf of Mexico).
Occurrence Of A Synchronous Hermaphroditic Striped Mullet, Mugil Cephalus, From The Northern Gulf Of Mexico, James S. Franks, Nancy J. Brown-Peterson, Dyan P. Wilson, Ronda J. Russell, Janaith K. Welker
Occurrence Of A Synchronous Hermaphroditic Striped Mullet, Mugil Cephalus, From The Northern Gulf Of Mexico, James S. Franks, Nancy J. Brown-Peterson, Dyan P. Wilson, Ronda J. Russell, Janaith K. Welker
Gulf and Caribbean Research
A synchronous hermaphroditic striped mullet, Mugil cephalus, was captured offshore of Southwest Pass, Louisiana on 6 December 1996 during the commercial roe mullet fishery harvest. The fish measured 412 mm FL, weighed 824 g and was determined to be 4 years old by otolith analysis. Gross examination of the gonads revealed four lobes: right and left ovaries and right and left testis which represents a unique occurrence among hermaphroditic fish. All lobes ended in a common sperm duct/oviduct with the exception of the left ovary which had no oviduct. Both ovaries contained vitellogenic oocytes and both testis had freely …
An Illustrated Record And Range Extension Of Caligus Chelifer (Copepoda, Siphonostomatoida) In The Gulf Of Mexico, E. Suarez-Morales, I. H. Kim, I. Lopez-Salgado
An Illustrated Record And Range Extension Of Caligus Chelifer (Copepoda, Siphonostomatoida) In The Gulf Of Mexico, E. Suarez-Morales, I. H. Kim, I. Lopez-Salgado
Gulf and Caribbean Research
A male specimen of the copepod Caligus chelifer Wilson, 1905, was collected during a plankton survey carried out during February 1994 off the Mexican coasts of the eastern Gulf of Mexico (Tamaulipas state). This is the first record of this species in Mexican waters and south of the 25ºN in the Northwestern Atlantic. Taxonomic illustrations of the specimen are provided.
Genetic Variation In The Carolina Marsh Clam, Polymesoda Caroliniana, W.D. Grater, C.T. Hackney, D.J. Covington
Genetic Variation In The Carolina Marsh Clam, Polymesoda Caroliniana, W.D. Grater, C.T. Hackney, D.J. Covington
Gulf and Caribbean Research
Horizontal starch gel electrophoresis was used to detect genetic variation at eight enzyme loci and five general protein loci in 11 populations of Polymesoda caroliniana from the Gulf of Mexico and south Atlantic coast of the U.S. Little variability was found between four of these populations along a salinity gradient in the Cape Fear Estuary, NC, and a regional trend was not observed in other populations along a latitudinal gradient. Heterogeneity analyses and dendrograms, both based on allele frequencies, suggest populations from the Gulf coast of Florida are genetically different from both a northern Gulf population (Mississippi) and Atlantic populations. …
Gulf Coast Research Laboratory: A Mississippi Academy, Linda Skupien, Joyce M. Shaw
Gulf Coast Research Laboratory: A Mississippi Academy, Linda Skupien, Joyce M. Shaw
Gulf and Caribbean Research
A brief overview of the creation and growth of the Gulf Coast Research Laboratory, this article traces the institution’s history and its strong relationship with the Mississippi Academy of Sciences. The Mississippi Academy of Sciences officially dedicated the Gulf Coast Research Laboratory (GCRL) with the opening of the first summer session at Magnolia State Park in Ocean Springs, Mississippi, on August 28, 1947. Mississippians in scientific and educational circles had worked for two decades toward creating a research and educational laboratory focused on the state’s marine and coastal environments. The Academy’s priorities were scholarly research and education. Political leaders were …
An Index To Assess The Sensitivity Of Gulf Of Mexico Species To Changes In Estuarine Salinity Regimes, John D. Christensen, Mark E. Monaco, Tony A. Lowery
An Index To Assess The Sensitivity Of Gulf Of Mexico Species To Changes In Estuarine Salinity Regimes, John D. Christensen, Mark E. Monaco, Tony A. Lowery
Gulf and Caribbean Research
An index of biological sensitivity to changes in freshwater inflow was developed for 44 species in 22 Gulf of Mexico estuaries for adult and juvenile life stages of fishes and macroinvertebrates. The BioSalinity Index (BSI) provides an innovative approach to quantify estuary-specific sensitivity of organisms to changes in estuarine salinity regimes based upon our knowledge of species salinity habitat preferences, the availability of this preferred habitat, and the relative abundance and distribution of species in time and space. We found that a significant difference exists between adult and juvenile life stage sensitivity, with juveniles exhibiting a lower sensitivity to salinity …
Spatial And Temporal Changes In Subtidal Benthic Crustaceans Along A Coastal River-Estuarine Gradient In Mississippi, Mark S. Peterson
Spatial And Temporal Changes In Subtidal Benthic Crustaceans Along A Coastal River-Estuarine Gradient In Mississippi, Mark S. Peterson
Gulf and Caribbean Research
Benthic crustaceans were collected monthly between 24 August 1985 and 20 September 1986 from tidal freshwater (TFW), oligohaline (OH) and mesohaline (MH) sites in Old Fort Bayou, a black-water tidal river of the Biloxi Bay estuary, Mississippi. Salinity varied seasonally and spatially and was primarily related to variations in rainfall during this study. Reduced rainfall after October 1985 resulted in the upstream movement of saline water and a concommitant shift in benthic crustaceans upstream with this change in the physical-chemical environment. This shift is supported by a significant positive concordance of ranks between salinity and relative abundance of Gammarus sp. …
Observations Of Sea Turtles And Other Marine Life At The Explosive Removal Of Offshore Oil And Gas Structures In The Gulf Of Mexico, Gregg R. Gitschlag, Bryan A. Herczeg, Theresa R. Barcak
Observations Of Sea Turtles And Other Marine Life At The Explosive Removal Of Offshore Oil And Gas Structures In The Gulf Of Mexico, Gregg R. Gitschlag, Bryan A. Herczeg, Theresa R. Barcak
Gulf and Caribbean Research
Observers monitored the explosive removal of oil and gas structures in the Gulf of Mexico to protect sea turtles and marine mammals from adverse impacts. More than 7,000 monitoring hours at 131 structure removals were conducted during 1993. Sixteen individual sea turtles were observed including 6 loggerheads, 1 Kemp's ridley, 1 green, and 8 unidentified sea turtles. Aerial surveys were approximately ten times more effective in observing sea turtles than day or night surface surveys.
Zooplankton Variability And Copepod Species Assemblages From A Tropical Coastal Lagoon, J.N. Alvarez-Cadena, L. Segura-Puertas
Zooplankton Variability And Copepod Species Assemblages From A Tropical Coastal Lagoon, J.N. Alvarez-Cadena, L. Segura-Puertas
Gulf and Caribbean Research
Results of monthly zooplankton sampling, carried out from December 1990 to November 1991, are compared from three localities in the Mexican Caribbean. Two stations, Bojórquez, and Cuenca Norte, represent partially enclosed areas of the Nichupté Lagoon System in the northeastern region of the Yucatán Peninsula; a third station was located in adjacent neritic waters. At the neritic station, temperature was lower, salinity was higher, and variations in the two parameters smaller as compared to the two lagoon stations. Zooplankton abundance ranged from 3585.5 org./m3 at the neritic station to 18,742.7 org./m3 at Cuenca Norte. Considering all animals collected, …
Butyltins In Crassostrea Virginica From Nine Reefs In Mississippi Sound, Thomas F. Lytle, Julia S. Lytle
Butyltins In Crassostrea Virginica From Nine Reefs In Mississippi Sound, Thomas F. Lytle, Julia S. Lytle
Gulf and Caribbean Research
Tributyltin (TBT), a very effective anti-foulant, has been banned from most marine paint uses since 1988 because of its reputed toxicity to nontarget organisms. Crassostrea virginica were collected from nine reefs in the Mississippi Sound in 1993 and analyzed for concentrations of butyltins: TBT, dibutyltin (DBT) and monobutyltin (MBT). TBT concentrations ranged from <2 to >20 ng(Sn)/g wet wt. Highest concentrations of butyltins were found at eastern Sound reefs near intense shipping and ship building activities with lowest concentrations found in the western Sound.
Benthic-Pelagic Coupling In Northern Gulf Of Mexico Estuaries: Do Benthos Feed Directly On Phytoplankton?, Gary R. Gaston, Carol M. Cleveland, Steven S. Brown, Chet F. Rakocinski
Benthic-Pelagic Coupling In Northern Gulf Of Mexico Estuaries: Do Benthos Feed Directly On Phytoplankton?, Gary R. Gaston, Carol M. Cleveland, Steven S. Brown, Chet F. Rakocinski
Gulf and Caribbean Research
Few of the dominant benthic taxa of the northern Gulf of Mexico feed directly on phytoplankton. Rather, most of them feed on near-bottom seston and detritus. This is in contrast to models for Chesapeake Bay and San Francisco Bay. We found that detritivores represented over 80% of the macrobenthic organisms and over 90% of the biomass in Gulf of Mexico estuaries. The paucity of benthos that consumed phytoplankton led us to hypothesize that macrobenthos in Gulf of Mexico estuaries had less effect on plankton communities than was documented in U.S. east coast and west coast estuaries, where benthic communities consumed …
Early Growth In Weight Of Kemp's Ridley Sea Turtles (Lepidochelys Kempii) In Captivity, Charles W. Caillouet Jr., Clark T. Fontaine, Theodore D. Williams, Sharon A. Manzella-Tirpak
Early Growth In Weight Of Kemp's Ridley Sea Turtles (Lepidochelys Kempii) In Captivity, Charles W. Caillouet Jr., Clark T. Fontaine, Theodore D. Williams, Sharon A. Manzella-Tirpak
Gulf and Caribbean Research
Growth in individual weight (w, kg) of Kemp’s ridley sea turtles (Lepidochelys kempii) in captivity was described for 15 year-classes (1978-1992) of turtles between ages (t) 0.17 to 1.22 yr, using In linear regression: Inw = lnc + dt1/2, where Inc is the intercept and d is the slope (growth rate index). There was significant (P < 0.001) heterogeneity in d among year-classes, with slowest growth (d = 3.798) exhibited by the 1983 year-class and fastest growth (d = 6.929) by the 1985 year-class, but there was no significant trend in d (P = 0.307) over year-classes. The variance of residuals from regression, s2reg, ranged from 0.2032 for the 1978 year-class to 0.0075 for the 1992 year-class, and showed a significant (P = 0.0001) logarithmic decrease over the year-classes. This decline in variation among individuals was probably due to a a …
Identification, Distribution, And Aspects Of The Biology Of Ten Anthuridean Isopod Species From The Shallow Continental Shelf Of The U.S. Gulf And East Coast, Brian Kensley
Gulf and Caribbean Research
With the aim of easing identification of continental shelf isopods, ten species of anthurideans, viz. Amakusanthura magnifica, Amakusanthura signata, Cyathura barbancki, Ptilanthura colpos, Ptilanthura tenuis, Hyssura bacescui, Kupellonura formosa, Neohyssura irpex, Xenanthura brevitelson, and Accalathura crenulata, are given brief diagnoses. A map showing the distribution of records, line figures illustrating diagnostic features, and a key to families, genera, and species are also provided.
Distribution And Abundance Of Chaetognatha On The Yucatan Shelf During May, 1986., Silvia Mille-Pagaza, Rocio Reyes-Martinez, M. Elena Sanchez-Salazar
Distribution And Abundance Of Chaetognatha On The Yucatan Shelf During May, 1986., Silvia Mille-Pagaza, Rocio Reyes-Martinez, M. Elena Sanchez-Salazar
Gulf and Caribbean Research
An analysis of chaetognath species distribution and abundance from the Yucatan Shelf during May 1986 is presented. Zooplankton samples and associated hydrographic data were collected at 21 stations off the northern and northwestern coasts of the peninsula. Density data were classified and analyzed by calculating the Euclidian distance. In addition, the Importance Value of the species was obtained. Highest abundance (1000 to 5000 orgs./100m3) occurred in the northern and northwestern zones off the peninsula, while species richness was higher at oceanic stations farther offshore. The most abundant and frequent species were Sagitta enflata and S. bipunctata. The …
Size And Weight Relationships For The Golden Crab, Chaceon Fenneri, And The Red Crab, Chaceon Quinquedens, From The Eastern Gulf Of Mexico, Christine Trigg, Harriet Perry
Size And Weight Relationships For The Golden Crab, Chaceon Fenneri, And The Red Crab, Chaceon Quinquedens, From The Eastern Gulf Of Mexico, Christine Trigg, Harriet Perry
Gulf and Caribbean Research
Carapace length, carapace width, and weight relationships are discussed for the golden crab, Chaceon fenneri, and the red crab, Chaceon quinquedens, from the eastern Gulf of Mexico. Males of both species were significantly larger than females in comparisons of means of all measured parameters. Relationships between carapace length and carapace width, carapace length and weight, and carapace width and weight were similar between Atlantic and Gulf of Mexico populations for both species.
Stomatopod Crustaceans From The Carolinas And Georgia, Southeastern United States, Raymond B. Manning, Richard W. Heard
Stomatopod Crustaceans From The Carolinas And Georgia, Southeastern United States, Raymond B. Manning, Richard W. Heard
Gulf and Caribbean Research
Literature and specimen records are updated for stomatopod crustaceans known from the coasts of the Carolinas and Georgia. Gibbesia, new genus, is recognized for Squilla neglecta, and a new species, Neogonodactylus wennerae, is named for an offshore species of Neogonodactylus previously identified with the Caribbean shore species N. bredini. Fifteen species of stomatopods representing 12 genera are now known from the area: Bigelowina biminiensis (Bigelow), Cloridopsis dubia (Milne Edwards), Coronis scolopendra Latreille, Gibbesia neglecta (Gibbes), Heterosquilloides armata (Smith), Meiosquilla quadridens (Bigelow), Lysiosquilla scabricauda (Lamarck), Lysiosquillina glabriuscula (Lamarck), Nannosquilla carolinensis Manning, N. whitingi Camp & Manning, Neogonodactylus …
A Study Of Factors Influencing The Hatch Rate Of Penaeus Vannamei Eggs. Iii. Presence Of The Female After Spawning, John T. Ogle, Kathleen A. Beaugez
A Study Of Factors Influencing The Hatch Rate Of Penaeus Vannamei Eggs. Iii. Presence Of The Female After Spawning, John T. Ogle, Kathleen A. Beaugez
Gulf and Caribbean Research
A comparison was made of the hatch rate (percent hatch) of Penaeus vannamei eggs. The study was comprised of 100 spawns from mated Penaeus vannamei females. In,one treatment, 50 female shrimp were removed from the isolation spawning tanks after spawning occurred but prior to hatching of eggs, producing 49.7% mean hatch rate. In the other treatment, 50 female shrimp were left in the tanks until after the eggs had hatched, producing an average hatch rate of 35.0%. A significant difference in the hatch rates of eggs was observed between spawns with and without presence of the female at time of …