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Journal articles on the topic 'SIPHONOPHORA'

Author: Grafiati

Published: 4 June 2021

Last updated: 17 February 2022

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1

Pugh, P. R., and S. H. D. Haddock. "Three new species of remosiid siphonophore (Siphonophora: Physonectae)." Journal of the Marine Biological Association of the United Kingdom 90, no. 6 (August 14, 2009): 1119–43. http://dx.doi.org/10.1017/s0025315409990543.

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Three new species belonging to the family Resomiidae (Siphonophora: Physonectae) are described from material mainly collected by ROVs in the vicinity of Monterey Bay, California, USA, with some additional submersible-collected specimens from The Bahamas. Although these species,Resomia ornicephala,R. persica, andR. dunni, show some differences from those previously described, particularly in the shape of the nectophores, they have all been placed in the genusResomia. They retain the basic characteristic of having two forms of tentilla on the same tentacle, the more proximal form, with a spirally coiled cnidoband, becoming reconfigured into the more distal form, usually with a zigzagged cnidoband, although in one of the new species the zigzagging of the cnidoband is less well-defined.

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2

Park, Jung-Hee. "Two New Records of Siphonophores (Cnidaria: Hydrozoa: Siphonophora) in Korean Waters." Animal Systematics, Evolution and Diversity 26, no. 1 (March 31, 2010): 67–70. http://dx.doi.org/10.5635/kjsz.2010.26.1.067.

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3

GASCA, REBECA. "Diversity of Siphonophora (Cnidaria: Hydrozoa) in the Western Caribbean Sea: new records from deep-water trawls." Zootaxa 2095, no. 1 (May 8, 2009): 60–68. http://dx.doi.org/10.11646/zootaxa.2095.1.7.

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Siphonophores are one of the least known gelatinous zooplankters in the tropical waters of the Northwestern Atlantic. Most of the regional knowledge about their diversity and distribution is based on surface samples (0–200 m). Siphonophores were collected from oceanic waters off the Mexican Caribbean across an expanded sampling range (0–940 m) during two cruises and were taxonomically examined. A total of 47 siphonophore species were recorded, of these, 14 had not been found in this sector of the Caribbean Sea and 10 represent new records for the Caribbean Basin. The number of species currently known from the western Caribbean is increased from 42 to 56. Some of these species also represent new records for the Northwestern Tropical Atlantic region. The greatest relative increase was observed among species of Lensia, five of which are exclusively deep-living forms dwelling below 300 m. A revised, expanded checklist of the siphonophores of the Western Caribbean is also provided. These results confirm the need of further deep sampling to increase our understanding of Caribbean siphonophore diversity.

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4

PUGH, P. R. "The taxonomic status of the genus Moseria (Siphonophora, Physonectae)." Zootaxa 1343, no. 1 (October 26, 2006): 1. http://dx.doi.org/10.11646/zootaxa.1343.1.1.

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The status of the two species presently included within the genus Moseri a (Siphonophora, Physonectae), M. c onvol uta (Moser, 1925) and M. sim ilis Margulis, 1977, is reviewed. Based on the availabil ity of new material, described herein, both are considered valid. They can be distinguished by the morphology of their bracts, tentill a and palpons. Whether there are di fferences in the nectophores re mains to be resolved. As the generic name Moseri a is pre-occupied for a ctenophore , a new generic name is required and Resomi a, gen. nov., is proposed. The systematic position of this genus within the physonect siphonophores is discussed in light of recent molecular phylogeny studies (Dunn et al. 2005b).

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5

Church, Samuel H., Stefan Siebert, Pathikrit Bhattacharyya, and Casey W. Dunn. "The histology of Nanomia bijuga (Hydrozoa: Siphonophora)." Journal of Experimental Zoology Part B: Molecular and Developmental Evolution 324, no. 5 (June 2, 2015): 435–49. http://dx.doi.org/10.1002/jez.b.22629.

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6

Pugh, P. R. "The status of the genus Prayoides (Siphonophora: Prayidae)." Journal of the Marine Biological Association of the United Kingdom 72, no. 4 (November 1992): 895–909. http://dx.doi.org/10.1017/s0025315400060136.

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The status of the prayine siphonophore genus Prayoides, monotypic for the species Prayoides intermedia Leloup, 1934, is reviewed in the light of recent collections made by the submersibles ‘Johnson-Sea-Link’ I and II. It is concluded that the genus is not valid, and that the species name should be reduced to that of a junior synonym of a Praya species. The bracts of the two Praya species, P. dubia (Quoy & Gaimard (1833) 1834) and P. reticulata (Bigelow, 1911) are re-described, as in the past there has been much confusion as to their true identity.

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7

PUGH, P. R. "A revision of the family Forskaliidae (Siphonophora, Physonectae)." Journal of Natural History 37, no. 11 (June 2003): 1281–327. http://dx.doi.org/10.1080/00222930110120638.

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8

PUGH, P. R. "A review of the siphonophore species mentioned in Haeckel’s (1888b) Challenger Monograph." Zootaxa 4683, no. 1 (October 7, 2019): 1–32. http://dx.doi.org/10.11646/zootaxa.4683.1.1.

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In his Challenger Monograph Haeckel (1888b) listed a total of 204 species of siphonophores and 36 species of Porpitidae (Disconectae, according to Haeckel), which are now known not to belong to the Siphonophorae. In this paper the siphonophore species have been divided into four categories: a). species that had been described previously by an acknowledged authority other than Haeckel; b). species where Haeckel changed the generic or specific name of a previously described species by another authority, and then ascribed the authority to himself; c). species that Haeckel actually described and illustrated as what he believed to be new; and d). species that Haeckel mentioned in the text as a new species, but with the description deferred to a later publication or simply not given. The validity of the forty-three species that Haeckel actually described is then discussed. A full list of all these species is given in an Appendix.

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9

Nogueira, Catarina Ramis, and Sérgio dos Reis Oliveira Jr. "Siphonophora from the coast of Brazil (17ºS to 24ºS)." Boletim do Instituto Oceanográfico 39, no. 1 (1991): 61–69. http://dx.doi.org/10.1590/s0373-55241991000100004.

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This work is based on the analysis of 99 zooplankton samples collected during the Oceanographic Expedition "ESPÍRITO SANTO I", held along the east coast of Brazil, between Cabo Frio and Abrolhos Archipelago, an area characterized by the occurrence of coastal upwelling, from July to September 1984. Zooplankton was collected with vertical plankton net hauls of 250 µm mesh size in the upper 200 meters layer. A total of twenty one species of Siphonophora was observed, two of which were identified as being physonect and the other as calycophorans. Specific diversity close to the shore and at the neighborhood of the Vitória-Trindade Bank System, showed smaller values, in comparison with those in the oceanic regions. Factorial analysis was used in order to access the changes observed in the population of the eleven most abundant species. The first two principal axes represented the influence of the nearshore - offshore gradient and the role of trophic interaction, accounted for 60% of the total variance of the data.

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10

Dunn, Casey W., and Günter P. Wagner. "The evolution of colony-level development in the Siphonophora (Cnidaria:Hydrozoa)." Development Genes and Evolution 216, no. 12 (September 16, 2006): 743–54. http://dx.doi.org/10.1007/s00427-006-0101-8.

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11

Pugh, P. R. "A new species of Rosacea (Siphonophora: Calycophorae: Prayidae) from the Gulf of Oman." Journal of the Marine Biological Association of the United Kingdom 82, no. 1 (February 2002): 171–72. http://dx.doi.org/10.1017/s0025315402005301.

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A new species of the genus Rosacea (Siphonophora: Calycophorae: Prayidae) is described from the Gulf of Oman, where its eudoxid stage was found in abundance. It is distinguished from other Rosacea species by the course of the lateral radial canals on the nectosac of the nectophore, and the shape of the eudoxid bract and the arrangement of its bracteal canals.

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12

Jiang, Xuankong, William A. Shear, Derek A. Hennen, Huiming Chen, and Zhicai Xie. "One hundred million years of stasis: Siphonophora hui sp. nov., the first Mesozoic sucking millipede (Diplopoda: Siphonophorida) from mid-Cretaceous Burmese amber." Cretaceous Research 97 (May 2019): 34–39. http://dx.doi.org/10.1016/j.cretres.2019.01.011.

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13

Pugh, P. R., and M. J. Youngbluth. "A new species of Halistemma (Siphonophora: Physonectae: Agalmidae) collected by submersible." Journal of the Marine Biological Association of the United Kingdom 68, no. 1 (February 1988): 1–14. http://dx.doi.org/10.1017/s0025315400050050.

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A new species of physonect siphonophore, Halistemma transliratum sp. nov., is described from two specimens collected at mesopelagic depths in Bahamian waters by the submersibles ‘Johnson-Sea-Link’ I and II, and comparisons are made with the established species of that genus.

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14

Munro, Catriona, Stefan Siebert, Felipe Zapata, Mark Howison, Alejandro Damian-Serrano, Samuel H. Church, Freya E. Goetz, Philip R. Pugh, Steven H. D. Haddock, and Casey W. Dunn. "Improved phylogenetic resolution within Siphonophora (Cnidaria) with implications for trait evolution." Molecular Phylogenetics and Evolution 127 (October 2018): 823–33. http://dx.doi.org/10.1016/j.ympev.2018.06.030.

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15

Mapstone, Gillian M., Laure Corbari, and Lenaick Menot. "Two deep-living rhodaliids (Cnidaria, Siphonophora) from the Mid-Atlantic Ridge." Marine Biology Research 13, no. 5 (December 13, 2016): 486–93. http://dx.doi.org/10.1080/17451000.2016.1232830.

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16

Mackie, G. O., and R. M. Marx. "Phosphatic spicules in the nematocyst batteries of Nanomia cara (Hydrozoa, Siphonophora)." Zoomorphology 108, no. 2 (1988): 85–91. http://dx.doi.org/10.1007/bf00539784.

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17

Stephens, Lester D., and Dale R. Calder. "The zoological career of Jesse Walter Fewkes (1850–1930)." Archives of Natural History 37, no. 2 (October 2010): 255–73. http://dx.doi.org/10.3366/anh.2010.0008.

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This article examines the life and zoological research of Jesse Walter Fewkes of the United States, whose later career as a pioneer in cultural anthropology overshadowed his significant earlier contributions to zoology. The primary focus of his zoological work was on planktonic Cnidaria, especially the Siphonophora. He also carried out detailed investigations on larval development of echinoderms and worms. A bibliography of Fewkes's publications in natural history and a list of the nominal taxa he established reflect the scope of his contributions.

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18

Hsieh, Hung-Yen, Shwu-Feng Yu, and Wen-Tseng Lo. "Influence of monsoon-driven hydrographic features on siphonophore assemblages in the Taiwan Strait, western North Pacific Ocean." Marine and Freshwater Research 64, no. 4 (2013): 348. http://dx.doi.org/10.1071/mf12151.

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The spatial patterns of siphonophores were analysed in relation to local hydrographic features during two different monsoon seasons (the north-easterly monsoon in winter v. the south-westerly monsoon in summer) in the Taiwan Strait. Forty-eight species were identified, with five types of calycophoran siphonophores (Lensia subtiloides, Chelophyes appendiculata, Chelophyes contorta, Bassia bassensis, and Diphyes chamissonis) being most common in both seasons. Significantly higher abundances of four of the five common species were recorded in summer than in winter. Differences in the siphonophore species compositions were also observed between the northern and southern part of Taiwan Strait, with significantly higher diversity occurring in the southern waters. The distribution patterns of siphonophore assemblages were closely linked to the hydrographic features, influenced by the dynamic nature of the currents in the study area, with temperature, salinity and zooplankton biomass being the three most important factors.

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19

Blackett, M., CH Lucas, RA Harmer, and P. Licandro. "Population ecology of Muggiaea atlantica (Cnidaria, Siphonophora) in the Western English Channel." Marine Ecology Progress Series 535 (September 15, 2015): 129–44. http://dx.doi.org/10.3354/meps11423.

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20

Pugh, P. R., and F. Pagés. "A new species of Clausophyes (Siphonophorae, Clausophyidae), with a redescription of C. galeata and C. moserae." Journal of the Marine Biological Association of the United Kingdom 73, no. 3 (August 1993): 595–608. http://dx.doi.org/10.1017/s0025315400033130.

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A new species of the genus Clausophyes (Siphonophora, Calycophora) is described from four anterior nectophores collected in the Southern Ocean. This species is distinguished from others in the genus by the presence of a large, undivided mouth plate on the anterior nectophore. However, in order to establish the distinctiveness of two other species in this genus, namely C. moserae and C. galeata, which a recent author has suggested should have only sub-specific ranking, the anterior and posterior nectophores of those species are redescribed.

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21

Uribe-Palomino, Julian, Raúl López, Mark J. Gibbons, Felipe Gusmão, and Anthony J. Richardson. "Siphonophores from surface waters of the Colombian Pacific Ocean." Journal of the Marine Biological Association of the United Kingdom 99, no. 1 (February 5, 2018): 67–80. http://dx.doi.org/10.1017/s0025315417002065.

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Siphonophores are colonial hydrozoans that feed on zooplankton including fish larvae, and occur throughout the world's oceans from surface waters to ocean depths. Here we describe the composition of hyponeustonic siphonophores (0–3 m depth) from the tropical Colombian Pacific Ocean based on 131 plankton samples collected between June–October from 2001–2004. Samples were dominated by species of Calycophorae, with only three species of Physonectae identified, consistent with their deeper depth distribution. Muggiaea atlantica, Chelophyes contorta, Diphyes dispar, and Eudoxoides mitra were the most common of the 21 species identified. We found moderate structuring of the siphonophore community by the salinity gradient from inshore to offshore, and greater richness during the night because of diel vertical migration. Temperature did not play a significant role in structuring siphonophore communities, perhaps because of the narrow temperature range observed (3.5 °C). We extend the known temperature and salinity range of several species, including M. atlantica up to temperatures of 28.6 °C and salinities down to 24.7. Interestingly, only polygastric stages of M. atlantica were found, suggesting the reproductive stage of M. atlantica in tropical waters might be found in deeper waters. Chelophyes appendiculata was rare in our study and C. contorta was common, providing evidence they have a potential allopatric relationship, with C. contorta replacing C. appendiculata in warm water. Finally, we found siphonophore abundance was positively related to the abundance of copepods and fish eggs, with the top 13 most abundant species all having positive correlations, suggesting siphonophore abundances are tightly controlled by their food.

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22

PUGH, P. R. "A synopsis of the Family Cordagalmatidae fam. nov. (Cnidaria, Siphonophora, Physonectae)." Zootaxa 4095, no. 1 (March 28, 2016): 1. http://dx.doi.org/10.11646/zootaxa.4095.1.1.

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23

Sherlock, Rob E., and Bruce H. Robison. "Effects of temperature on the development and survival of Nanomia bijuga (Hydrozoa, Siphonophora)." Invertebrate Biology 119, no. 4 (May 11, 2005): 379–85. http://dx.doi.org/10.1111/j.1744-7410.2000.tb00106.x.

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24

Westwood, John O. "XVII. Note on Siphonophora Artocarpi, Westw. (Trans. Ent. Soc. Lond., 1890, p. 649)." Transactions of the Royal Entomological Society of London 39, no. 3 (April 24, 2009): 413. http://dx.doi.org/10.1111/j.1365-2311.1891.tb03037.x.

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25

Mańko, Maciej K., Angelika W. Słomska, and Krzysztof Jażdżewski. "Siphonophora of the Gulf of Aqaba (Red Sea) and their associations with crustaceans." Marine Biology Research 13, no. 5 (May 16, 2017): 480–85. http://dx.doi.org/10.1080/17451000.2017.1296577.

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26

Panasiuk-Chodnicka, Anna A., Maria I. Żmijewska, and Maciej Mańko. "Vertical migration of Siphonophora (Cnidaria) and their productivity in the Croker Passage, the Antarctic." Polish Polar Research 35, no. 1 (March 1, 2014): 115–31. http://dx.doi.org/10.2478/popore-2014-0007.

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Abstract The population structure, seasonal and diel changes in vertical distribution of two siphonophore species, Dimophyes arctica and Pyrostephos vanhoeffeni, in Croker Passage (Antarctic Peninsula) are examined, and compared with the results obtained by other au− thors in various oceanic areas. Zooplankton samples were taken at discrete depth intervals between 0 and 1200 m during day and night shifts, in both summer and winter seasons. Dimophyes arctica was present both in polygastric and eudoxid forms, with the latter being dominant throughout the entire study period. The results obtained demonstrate that Antarc− tic waters clearly enhance the reproductive ability of this species when compared with spec− imens from other oceanic regions. Maximum densities of Dimophyes arctica were recorded in December in the 200-400 m depth horizon. However, high concentrations of eudoxids were also recorded at deeper parts of the water column. Pyrostephos vanhoeffeni was, in contrast, most abundant in autumn and winter, and both species were found to proliferate and disperse or sink further down the water column during autumn and winter. Daily verti− cal migration was observed only during the summer period.

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27

Panasiuk, A., L. Grzonka, P. Prątnicka, J. Wawrzynek-Borejko, and M. Szymelfenig. "Zonal variability of pelagic Siphonophora (Cnidaria) in the atlantic sector of the southern ocean." Journal of Sea Research 165 (October 2020): 101951. http://dx.doi.org/10.1016/j.seares.2020.101951.

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28

Dunn, Casey W., Philip R. Pugh, and Steven H. D. Haddock. "Molecular Phylogenetics of the Siphonophora (Cnidaria), with Implications for the Evolution of Functional Specialization." Systematic Biology 54, no. 6 (December 1, 2005): 916–35. http://dx.doi.org/10.1080/10635150500354837.

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29

Gamulin, Tomo, and Frano Kršinic. "Distribution and Abundance of Calyco-phores (Siphonophora, Calycophorae) in the Mediterranean and Adriatic Sea." Marine Ecology 14, no. 2 (June 1993): 97–111. http://dx.doi.org/10.1111/j.1439-0485.1993.tb00369.x.

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30

Grossmann, Mary M., Dhugal J. Lindsay, and Allen G. Collins. "The end of an enigmatic taxon:Eudoxia macrais the eudoxid stage of Lensia cossack(Siphonophora, Cnidaria)." Systematics and Biodiversity 11, no. 3 (September 2013): 381–87. http://dx.doi.org/10.1080/14772000.2013.825658.

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31

MAŃKO, MACIEJ K., and PHILIP R. PUGH. "Agalma clausi (Bedot, 1888) (Siphonophora: Physonectae)—complementary description with notes on species distribution and ecology." Zootaxa 4441, no. 2 (June 27, 2018): 311. http://dx.doi.org/10.11646/zootaxa.4441.2.7.

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Siphonophores are colonial hydrozoans, which in spite of often growing to great lengths are an inconspicuous and understudied component of pelagic ecosystems. Although they are widely distributed, many species have rarely been collected, or often been misidentified so their taxonomy still requires some clarification. Here we redescribe one such species, Agalma clausi Bedot, 1888, supplementing information on its morphology, ecology and distribution based on the material collected in the tropical sector of the Atlantic Ocean and adjacent seas. We also provide comments on the probable status of another Agalma species, A. haeckeli Bigelow, 1911.

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32

Santiago-Blay, Jorge A., and George O. Poinar. "Millipeds from Dominican Amber, with the Description of Two New Species (Diplopoda: Siphonophoridae) of Siphonophora." Annals of the Entomological Society of America 85, no. 4 (July 1, 1992): 363–69. http://dx.doi.org/10.1093/aesa/85.4.363.

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33

Damian-Serrano, Alejandro, Steven H. D. Haddock, and Casey W. Dunn. "The evolution of siphonophore tentilla for specialized prey capture in the open ocean." Proceedings of the National Academy of Sciences 118, no. 8 (February 16, 2021): e2005063118. http://dx.doi.org/10.1073/pnas.2005063118.

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Predator specialization has often been considered an evolutionary “dead end” due to the constraints associated with the evolution of morphological and functional optimizations throughout the organism. However, in some predators, these changes are localized in separate structures dedicated to prey capture. One of the most extreme cases of this modularity can be observed in siphonophores, a clade of pelagic colonial cnidarians that use tentilla (tentacle side branches armed with nematocysts) exclusively for prey capture. Here we study how siphonophore specialists and generalists evolve, and what morphological changes are associated with these transitions. To answer these questions, we: a) Measured 29 morphological characters of tentacles from 45 siphonophore species, b) mapped these data to a phylogenetic tree, and c) analyzed the evolutionary associations between morphological characters and prey-type data from the literature. Instead of a dead end, we found that siphonophore specialists can evolve into generalists, and that specialists on one prey type have directly evolved into specialists on other prey types. Our results show that siphonophore tentillum morphology has strong evolutionary associations with prey type, and suggest that shifts between prey types are linked to shifts in the morphology, mode of evolution, and evolutionary correlations of tentilla and their nematocysts. The evolutionary history of siphonophore specialization helps build a broader perspective on predatory niche diversification via morphological innovation and evolution. These findings contribute to understanding how specialization and morphological evolution have shaped present-day food webs.

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34

Pugh, P. R. "A new species ofphysophora(siphonophora: Physonectae: Physophoridae) from the North Atlantic, with comments on related species." Systematics and Biodiversity 2, no. 3 (January 2005): 251–70. http://dx.doi.org/10.1017/s1477200004001483.

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35

Buecher, Emmanuelle. "Appearance of Chelophyes appendiculata and Abylopsis tetragona (Cnidaria, Siphonophora) in the Bay of Villefranche, northwestern Mediterranean." Journal of Sea Research 41, no. 4 (June 1999): 295–307. http://dx.doi.org/10.1016/s1385-1101(99)00005-2.

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36

Lučić, Davor, Adam Benović, Mirna Batistić, Jakica Njire, and Vladimir Onofri. "Calycophorae (Siphonophora) in the open waters of the central and southern Adriatic Sea during spring 2002." Journal of the Marine Biological Association of the United Kingdom 85, no. 3 (June 2005): 495–501. http://dx.doi.org/10.1017/s0025315405011422.

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Twenty species of calycophoran siphonophores were identified from the central and south Adriatic Sea in spring 2002. Highest abundance and species diversity were noted at the deepest stations in the south Adriatic. Highest total abundance was found in the upper 100 m. The dominant species above 100 m were Lensia subtilis, Eudoxoides spiralis and Sphaeronectes gracilis, none of which showed diel migration. The first two species correlated significantly with the vertical abundance of microzooplankton, and the last with that of copepods. The most abundant species in the 100-400 m layer was Lensia meteori, whereas Lensia conoidea and Chlausophyes ovata were most abundant below 400 m.

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37

Pontin, D. R., and R. H. Cruickshank. "Molecular phylogenetics of the genus Physalia (Cnidaria: Siphonophora) in New Zealand coastal waters reveals cryptic diversity." Hydrobiologia 686, no. 1 (January 24, 2012): 91–105. http://dx.doi.org/10.1007/s10750-011-0994-8.

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38

PUGH, P. R. "A review of the family Sphaeronectidae (Class Hydrozoa, Order Siphonophora), with the description of three new species." Zootaxa 2147, no. 1 (July 2, 2009): 1–48. http://dx.doi.org/10.11646/zootaxa.2147.1.1.

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The last reviewer of the family Sphaeronectidae (Siphonophora, Calycophorae) (Carré, 1968c) considered that it consisted of a single genus, Sphaeronectes, containing five species; three of which had been recently described by himself. For the other two species there had been much nomenclatural confusion in the past, as is herein reviewed. It is considered that for one of these species the name Sphaeronectes koellikeri Huxley (1859) has priority over the name currently in usage, that is S. gracilis (Claus, 1873; 1874). In addition the status of S. brevitruncata (Chun, 1888) is reconsidered and the species considered valid, with S. japonica (Stepanjants, 1967) being considered as a likely junior synonym of it. Three new Sphaeronectes species, S. christiansonae sp. nov., S. haddocki sp. nov. and S. tiburonae sp. nov., are described, and the systematic position of the genus reconsidered in the light of preliminary molecular phylogenetic data.

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39

Nishiyama, Eric Y., Guilherme C. Ribeiro, and Otto M. P. Oliveira. "Phylogenetic analysis of the genus Lensia (Cnidaria, Hydrozoa, Siphonophora), based on the species morphology." Zootaxa 4132, no. 4 (July 1, 2016): 493. http://dx.doi.org/10.11646/zootaxa.4132.4.2.

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40

Grossmann, Mary M., Allen G. Collins, and Dhugal J. Lindsay. "Description of the eudoxid stages ofLensia havockandLensia leloupi(Cnidaria: Siphonophora: Calycophorae), with a review of all knownLensiaeudoxid bracts." Systematics and Biodiversity 12, no. 2 (April 3, 2014): 163–80. http://dx.doi.org/10.1080/14772000.2014.902867.

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De La Cruz -Francisco, Vicencio, and Liliana Flores -Galicia. "PRIMEROS REGISTROS DE MEDUSAS (CUBOZOA, SCYPHOZOA), SIFONÓFOROS (HYDROZOA) Y CTENÓFOROS (TENTACULATA) DEL SISTEMA ARRECIFAL LOBOS-TUXPAN, MÉXICO." CICIMAR Oceánides 33, no. 1 (April 18, 2018): 33. http://dx.doi.org/10.37543/oceanides.v33i1.222.

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RESUMEN. Medusas, sifonóforos y ctenóforos son organismos ecológicamente importantes por su papel como depredadores voraces en la cadena trófica, ya que en altas densidades ocasionan problemas económicos. En las costas mexicanas del Golfo de México existe conocimiento de la riqueza taxonómica de estos animales macrozooplanctónicos, pero aún se desconoce qué especies se encuentran en los arrecifes coralinos del norte de Veracruz. Este estudio presenta los primeros registros de este grupo para el Sistema Arrecifal Lobos-Tuxpan. Se identificaron tres especies de medusas, un sifonóforo y dos especies de ctenóforos a partir de registros fotográficos obtenidos en los arrecifes Tuxpan, Enmedio, Tanhuijo, Oro Verde y Lobos. El taxón Cyanea sp. se registra por primera vez para el suroeste del Golfo de México y Cestum veneris es nuevo registro para el litoral veracruzano. Las especies Aurelia aurita (medusa), Physalia physalis (sifonóforo) y Mnemiopsis leidyi (ctenóforo) se observaron en la mayoría de los arrecifes estudiados. La información aquí presentada puede ser útil para el sector turístico al evitar las medusas y sifonóforos que son tóxicos.First records of jellyfish (Cubozoa, Scyphozoa), Siphonophores (Hydrozoa), and Ctenophores (Tentaculata) of the Lobos-Tuxpan Reef System, MexicoABSTRACT. Jellyfish, siphonophores and ctenophores are ecologically important organisms due to their role as voracious predators in the trophic chain, which in high densities may cause economic problems. There is knowledge of the taxonomic wealth of these macrozooplanktonic animals in the Mexican coasts of the Gulf of Mexico, but it is still unknown what species are found in the coral reefs from the north of Veracruz. This study presents the first records of this group for the Lobos-Tuxpan Reef System. Three species of jellyfish, one siphonophore and two ctenophores, were identified through photographic records belonging to the Tuxpan, Enmedio, Tanhuijo, Oro Verde and Lobos reefs. For the first time, the species Cyanea sp. for the South-West of the Gulf of Mexico and Cestum veneris for the Veracruz coast are recorded. The species Aurelia aurita (jellyfish), Physalia physalis (siphonophore) and Mnemiopsis leidyi (ctenephore) were observed in most of the studied reefs. The information provided here may be useful in the tourist sector to avoid toxic jellyfish and siphonophores.

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Haddock, Steven H. D., Casey W. Dunn, and Philip R. Pugh. "A re-examination of siphonophore terminology and morphology, applied to the description of two new prayine species with remarkable bio-optical properties." Journal of the Marine Biological Association of the United Kingdom 85, no. 3 (June 2005): 695–707. http://dx.doi.org/10.1017/s0025315405011616.

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Siphonophores (Cnidaria: Hydrozoa) are dominant members of the carnivorous plankton, and they are known for their ability to produce bioluminescence. Here we describe two new calycophoran species (sub-family Prayinae) that are unique in their morphological and optical traits. One species, Gymnopraia lapislazula gen. nov., sp. nov., displays a dramatic form of blue structural coloration, and the other, Lilyopsis fluoracantha, sp. nov., bears an exceptional amount of fluorescence–enough to give a greenish cast during white-light illumination. We also introduce a consistent terminology for siphonophore axes and zooids, discuss characters important for distinguishing the known prayine genera, and suggest that the presence or absence of a disjunct pedicular canal could be of diagnostic value for the group.

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PUGH, P. R., C. W. DUNN, and S. H. D. HADDOCK. "Description of Tottonophyes enigmatica gen. nov., sp. nov. (Hydrozoa, Siphonophora, Calycophorae), with a reappraisal of the function and homology of nectophoral canals." Zootaxa 4415, no. 3 (May 1, 2018): 452. http://dx.doi.org/10.11646/zootaxa.4415.3.3.

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A new species of calycophoran siphonophore, Tottonophyes enigmatica gen. nov, sp. nov., is described. It has a unique combination of traits, some shared with prayomorphs (including two rounded nectophores) and some with clausophyid diphyomorphs (the nectophores are dissimilar, with one slightly larger and slightly to the anterior of the other, and both possess a somatocyst). Molecular phylogenetic analyses indicate that the new species is the sister group to all other diphyomorphs. A new family, Tottonophyidae, is established for it. Its phylogenetic position and distinct morphology help clarify diphyomorph evolution. The function and homology of the nectophoral canals and somatocyst is also re-examined and further clarification is given to their nomenclature.

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SIEBERT, STEFAN, PHIL R. PUGH, and STEVEN H. D. HADDOCK. "Re-evaluation of characters in Apolemiidae (Siphonophora), with description of two new species from Monterey Bay, California." Zootaxa 3702, no. 3 (August 27, 2013): 201. http://dx.doi.org/10.11646/zootaxa.3702.3.1.

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Pugh, P. R., F. Pages, and B. Boorman. "Vertical distribution and abundance of pelagic cnidarians in the eastern Weddell Sea, Antarctica." Journal of the Marine Biological Association of the United Kingdom 77, no. 2 (May 1997): 341–60. http://dx.doi.org/10.1017/s002531540007171x.

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The species composition, abundance and vertical distribution of micronektonic cnidarians has been investigated in the upper 2800 m at Discovery Station 9969, located in the cold regime in the eastern Weddell Sea, Antarctica. In total 22 siphonophore and 20 medusan species were identified. Overall siphonophores were more abundant than medusae, but the latter usually contributed much more to the biovolume. On average, cnidarians contributed more than 50% to the total biovolume of each catch; and they contributed >70% to the combined total of all the samples. Despite the high water content of these animals, these large biovolumes meant that the cnidarians formed ∼25% of the total carbon in each catch. The possible impact of these gelatinous cnidarian populations on the ecosystem is discussed.

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Mapstone, Gillian M. "Re-description of Rosacea cymbiformis, a prayine siphonophore (from the Mediterranean Sea), with comments on nectophore designation and bract orientation." Journal of the Marine Biological Association of the United Kingdom 85, no. 3 (June 2005): 709–21. http://dx.doi.org/10.1017/s0025315405011628.

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This updated re-description of the prayine siphonophore Rosacea cymbiformis includes figures of all zooids (except larval nectophores) and is based on material held in the collections of the Natural History Museum (NHM), London. Rosacea cymbiformis was originally described in 1830 under the name Physalia cymbiformis, and subsequently reported many times during the 19th Century. However, during the 20th Century it was confused with the closely related species R. plicata, and the two species are still not clearly differentiated. Previous descriptions are reviewed herein, including conflicting interpretations of nectophore designation in R. plicata, and bract orientation in R. cymbiformis and R. plicata. To identify these siphonophores to species level and separate them from other closely related prayines, it is essential to distinguish the first definitive nectophore from the second, and the right paired bracteal canals from the left canals. This becomes critical when only detached siphonophore zooids are available, as for example, in plankton samples collected with nets. A summary of the differences between R. cymbiformi and the five other currently recognized Rosacea species, R. plicata, R. repanda, R. limbata, R. flaccida and R. arabiana, is presented. The full synonymy of R. cymbiformis is too long for inclusion here and is deferred to a later paper.

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Grossmann, Mary M., and Dhugal J. Lindsay. "Diversity and distribution of the Siphonophora (Cnidaria) in Sagami Bay, Japan, and their association with tropical and subarctic water masses." Journal of Oceanography 69, no. 4 (June 13, 2013): 395–411. http://dx.doi.org/10.1007/s10872-013-0181-9.

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Hirose, Euichi, Masakazu N. Aoki, and Jun Nishikawa. "Still alive? Fine structure of the barrels made by Phronima (Crustacea: Amphipoda)." Journal of the Marine Biological Association of the United Kingdom 85, no. 6 (November 9, 2005): 1435–39. http://dx.doi.org/10.1017/s0025315405012610.

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Amphipods of the genus Phronima are known to make a barrel-shaped house from the gelatinous matrix of pelagic tunicates or siphonophores. Among the seven barrels examined here, one barrel of Phronima curvipes was supposed to be made from a swimming bell of a siphonophore based on its morphology, while the other six barrels made by P. sedentaria were immunochemically and/or morphologically identified as tunicates (i.e. Thetys vagina, other salps and pyrosomas). Histological observation showed that the phronimids had completely eaten the animal tissues other than the gelatinous matrix (i.e. tunic or mesoglea). Tunic cells were found in the tunicate barrel and some were probably tunic phagocytes that appeared to be alive and functional. In the tunicate barrels, cuticular layers of the tunic were found on both the outer and inner side of the barrel wall. Tunic cuticle would be regenerated on the inner side after the epidermis was grazed by the phronimids. The cuticular layers would protect the tunic matrix from the invasion of microorganisms. In the barrel supposed to originate from Thetys vagina, there are minute protrusions on the tunic cuticle as found in the intact tunic of this species. In the barrel from a siphonophore, neither cells nor cuticle regeneration were found. No bacteria were observed in the barrel, suggesting that the barrel has some antibiotic system.

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Pagès, F., HE González, M. Ramón, M. Sobarzo, and JM Gili. "Gelatinous zooplankton assemblages associated with water masses in the Humboldt Current System, and potential predatory impact by Bassia bassensis (Siphonophora: Calycophorae)." Marine Ecology Progress Series 210 (2001): 13–24. http://dx.doi.org/10.3354/meps210013.

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Wilson, Emily. "Siphonophore." Iowa Review 43, no. 2 (September 2013): 32. http://dx.doi.org/10.17077/0021-065x.7385.

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