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Articles 1 - 12 of 12
Full-Text Articles in Life Sciences
Tanaidacea (Crustacea: Peracardia) Of The Gulf Of Mexico. Vi. On The Genus Mesotanais Dollfus, 1897 With Descriptions Of Two New Species, M. Longisetosus And M. Vadicola, Jurgen Sieg, Richard W. Heard
Tanaidacea (Crustacea: Peracardia) Of The Gulf Of Mexico. Vi. On The Genus Mesotanais Dollfus, 1897 With Descriptions Of Two New Species, M. Longisetosus And M. Vadicola, Jurgen Sieg, Richard W. Heard
Gulf and Caribbean Research
Two new species of tanaidaceans belonging to the family Leptocheliidae were collected from the continental shelves and slopes of the eastem and Gulf coasts of the United States. Both of these species are assigned to the poorly known genus Mesotanais Dollfus, 1897. Mesotanais is unique within the Leptocheliidae because its members lack eyes. The second supposedly important generic character, uniramous uropods, reported in the original description is considered to be a misdiagnosis. The assumption of this error is supported by the rediscovery of the type-species, Mesotanais dubius Dollfus, 1897 (Sieg and Bird, in press). In the present study, the genus …
Calliax Jonesi, N. Sp. (Decapoda: Thalassinidea: Callianassidae) From The Northwestern Bahamas, Richard W. Heard
Calliax Jonesi, N. Sp. (Decapoda: Thalassinidea: Callianassidae) From The Northwestern Bahamas, Richard W. Heard
Gulf and Caribbean Research
Two specimens of Calliax jonesi, n. sp., were collected from fine carbonate sediments in 3 to 5 m of water at Bimini Harbor, Bahamas. Of the species presently assigned to the genus Calliax de Saint Laurent, 1973, C. jonesi appears to be most closely related to C. quadracuta (Biffar, 1970), presently known from the Atlantic coast of Venezuela and the Florida Keys. Calliax jonesi is distinguished from C. quadracuta by: (1) the absence of a distal spinose process on the dorsal and ventral margins of the carpus of the first pair of chelipeds, (2) the armature and shape of …
The Growth Of Cultchless Crassostrea Virginica Spat At Biloxi Bay, Mississippi Using Different Methods Of Culture, John T. Ogle
The Growth Of Cultchless Crassostrea Virginica Spat At Biloxi Bay, Mississippi Using Different Methods Of Culture, John T. Ogle
Gulf and Caribbean Research
Oyster spat produced from the experimental hatchery of the Gulf Coast Research Laboratory at Point Cadet, Biloxi, Mississippi, were grown under a variety of conditions. Recovery of spat planted on adjacent bay bottom was negligible, despite the use of either whole oyster valves, crushed oyster shell or clam shell as a substrate. Negligible growth occurred for spat held in vertical and horizontal water tanks. Growth of spat in horizontal tanks was affected by the density of stocking, with lower densities producing faster growth. Growth in all studies was slower than anticipated and a comparison on growth for spat from a …
Tanaidacea (Crustacea: Peracardia) Of The Gulf Of Mexico. Viii., Barbara J. Viskup, Richard W. Heard
Tanaidacea (Crustacea: Peracardia) Of The Gulf Of Mexico. Viii., Barbara J. Viskup, Richard W. Heard
Gulf and Caribbean Research
Pseudosphyrapus siegi, n. sp. is described from benthic samples collected in deep water (595-2400 m) from the northern Gulf of Mexico. Of the five currently recognized species of Pseudosphyrapus Cup, 1980, P. siegi is most closely related to P. dispar (Lang, 1968), a southwestem Pacific cognate and only other member of the genus having a squama on antenna 2. Pseudosphyrapus siegi is distinguished from P. dispar by: (1) a more triangular, but less acute, rostrum (2) the presence of two 4-pronged spines on the second maxilla (homologous spines on P. dispar are 3-pronged), and (3) the absence of a …
Larval Distribution And Abundance Of Carangidae (Pisces), From The Southern Gulf Of Mexico, 1983-1984, Cesar Flores-Coto, Marina Sanchez-Ramirez
Larval Distribution And Abundance Of Carangidae (Pisces), From The Southern Gulf Of Mexico, 1983-1984, Cesar Flores-Coto, Marina Sanchez-Ramirez
Gulf and Caribbean Research
The larval distribution and abundance of several taxa of the carangids from the southem Gulf of Mexico are analyzed, based on data from four oceanographic cruises conducted between 1983 and 1984. The material was collected with a bongo net fished to maximum depths of 200 m. The species collected were Chloroscombrus chrysurus (54.2%), Decapterus punctatus (15.8%), Trachurus Iathami (11.8%), Selene setapinnis (6.1%), Selar crumenophthalmus (6.0), Caranx hipposllatus (0.9%), Caranx crysos (0.7%) and Selene sp. (0.3%). The higher frequency of occurrence and greater abundance of larvae of all species was found over the continental shelf, and in some cases, in the …
An Illustrated Key To The Chaetognatha Of The Northern Gulf Of Mexico With Notes On Their Distribution, Jerry A. Mclelland
An Illustrated Key To The Chaetognatha Of The Northern Gulf Of Mexico With Notes On Their Distribution, Jerry A. Mclelland
Gulf and Caribbean Research
A key is provided to facilitate the identification of 24 species in nine genera of Chaetognatha occurring in the northem Gulf of Mexico. Included are the deep-water species, Eukrohnia proboscidea, E. calliops, Mesosagitta sibogae, and Sagitta megalophthalma, all recent additions to the known fauna of the region. Meristic data, brief descriptions, ecological notes, Gulf of Mexico records, and illustrations are also presented.
Records Of Deep-Water Chaetognaths From The Northern Gulf Of Mexico, Jerry A. Mclelland, Harriet M. Perry
Records Of Deep-Water Chaetognaths From The Northern Gulf Of Mexico, Jerry A. Mclelland, Harriet M. Perry
Gulf and Caribbean Research
Fourteen species of deep-water Chaetognatha were present in plankton samples collected between 200 and 677 m at five stations along the continental slope of the northem Gulf of Mexico. Samples were taken in conjunction with the MARFlN Geryon cruises of 1987 and 1988. New Gulf of Mexico records resulting from this study were Eukrohnia calliops, Eukrohnia proboscidea, Mesosagitta sibogae, and Sagitta megalophthalma. Other deepwater species present were Eukrohnia fowleri, E. bathypelagica, E. bathyantarctica, Caecosagitta macrocephala, Mesosagitta decipiens, M. minima, Solidosagitta planctonis, Krohnitta subtilis, Flaccisagitta hexaptera, and F. lyra …
Invertebrates Associated With The Thinstripe Hermit Clibanarius Vittatus (Bosc) (Crustacea: Decapoda: Diogenidae) From The Barrier Islands Of Mississippi, Leslie Bruce
Gulf and Caribbean Research
Hermit crabs, the gastropod shells that they inhabit, and associated epifauna constitute a motile microhabitat. Twenty-three macroscopic. epifaunal invertebrates were associated with the diogenid crab Clibanarius vittatus in Mississippi coastal waters. Epibiotic growth may discourage predation of the crab, reduce competition for the shells, or provide an advantage in agonistic shell interaction. In addition, the shell provides a hard substrate for settling and attachment of epifauna in an area that is largely devoid of hard substrate. Reduced sedimentation and prevention of shell burial, improved food availability, transport, and protection from predation may also be advantageous to the epizoans.
Excorallana Delaneyi, N. Sp. (Crustacea: Isopoda: Excorallanidae) From The Northeastern Gulf Of Mexico, With Observations On Adult Characters And Sexual Dimorphism In Related Species Of Excorallana Stebbing, 1904, Ilya Stone, Richard W. Heard
Excorallana Delaneyi, N. Sp. (Crustacea: Isopoda: Excorallanidae) From The Northeastern Gulf Of Mexico, With Observations On Adult Characters And Sexual Dimorphism In Related Species Of Excorallana Stebbing, 1904, Ilya Stone, Richard W. Heard
Gulf and Caribbean Research
Excorallana delaneyi n. sp. was found associated with the sponges Halichondria sp. and Hymeniacidon sp. in St. Joseph Bay, Florida. Excorallana delaneyi is most similar to E. berbicensis Boone, 1918 described from Brazil, but it can be distinguished from that species and other members of the genus by the shape and spination of the uropods and pleotelson. A key is presented to separate E. delaneyi and the other seven species of Excorallana that lack lateral notches in the pleotelson. Morphological differences between the subadults and adults of E. delaneyi are described, and possible taxonomic problems resulting from such differences in …
A Redescription Of Oncholaimoides Elongatus Hopper, 1961 (Nematoda: Enoplida) With Descriptions Of The Other Two Members Of The Genus, Edwin J. Keppner, Lisa A. Keppner
A Redescription Of Oncholaimoides Elongatus Hopper, 1961 (Nematoda: Enoplida) With Descriptions Of The Other Two Members Of The Genus, Edwin J. Keppner, Lisa A. Keppner
Gulf and Caribbean Research
Oncholaimoides elongatus is redescribed from specimens collected from subtidal, shallow-water sediments from the Gulf of Mexico, Bay County, Florida. The original description of this species was based on a single male specimen from the Gulf of Mexico, Baldwin County, Alabama. Descriptions of Oncholaimoides rugosus and Oncholaimoides striatus from subtidal sediments of St. Andrew Bay, Bay County, Florida are given. A key to the species of Oncholaimoides is provided.
Acanthohaustorius Uncinus, A New Species Of Sand-Burrowing Amphipod From The Northern Gulf Of Mexico, With Notes On Its Ecology (Haustoriidae: Haustoriinae), John M. Foster
Gulf and Caribbean Research
A new species of sand-burrowing amphipod, Acanthohaustorius uncinus, is described from vegetated and unvegetated estuarine sands from St. Andrew Bay, Florida and East Ship Island, Mississippi. The genus Acanthohaustorius has been informally recorded from St. Andrew Bay, but this species is now formally described from the Gulf of Mexico. A. uncinus n. sp. is most similar to A. millsi of the Open American Atlantic coast. It differs from A. millsi in the presence of a dorsally directed, hooked spine on the peduncle of uropod 1 and the totally cleft telson lobes. Information on the ecology of A. uncinus n. …
Tanaidacea (Crustacea: Peracardia) Of The Gulf Of Mexico. Vii. Atlantapseudes Lindae, N. Sp. (Apseudidae) From The Continental Slope Of The Northern Gulf Of Mexico, Gabriele H. Meyer, Richard W. Heard
Tanaidacea (Crustacea: Peracardia) Of The Gulf Of Mexico. Vii. Atlantapseudes Lindae, N. Sp. (Apseudidae) From The Continental Slope Of The Northern Gulf Of Mexico, Gabriele H. Meyer, Richard W. Heard
Gulf and Caribbean Research
During 1983 through 1985, 53 specimens of Atlantapseudes lindae, new species, were collected in box core samples taken on the continental slope in the northern Gulf of Mexico. Atlantapseudes lindae can be distinguished from the only other member of the genus, A. nigrichela Băcescu, 1978 by several characters, including the length of the squama of antenna 2, which is no longer than the third peduncular segment, and the absence of anterolateral spines on pereonites 1-2 of females and 1-6 on males. The diagnosis for genus Atlantapseudes Băcescu, 1978 is amended to include the presence of sexually dimorphic chelae and …