199,845 research outputs found
Douglas Berggren
No full textBlack and white photograph of Douglas Berggren teaching a class, Oct. 1979Photographer: M. YarrowThis bibliographic record is available under the Creative Commons CC0 public domain dedication. The New College of Florida Libraries, as creator of this bibliographic record, has waived all rights to it worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law
Naushonia lactoalbida Berggren 1992
No full textNaushonia lactoalbida Berggren, 1992 Fig. 2 Naushonia lactoalbida Berggren 1992: 514 (type locality: Inhaca Island, Mozambique), 522 (key), figs. 1–6.— Alvarez et al. 2000: 198 (key).— Komai 2004: 22, figs. 1 B, 5, 6 (Iriomote Island, Ryukyu Islands, Japan).— Anker et al. 2015: 333, fig. 24 B (Lombok, Indonesia). Material examined. Japan: 1 female (pocl 9.3 mm), Ryukyu Islands, Okinawa Island, Nago, Kyoda, scuba diving, 5 m, coral rubble, coll. N. Shirakawa, 10 November 2012, CBM-ZC 12595. Papua New Guinea: 1 ovigerous female (pocl 5.3 mm), Madang lagoon, scuba diving, subtidal flat with coral rubble, 3–5 m, on silt sand under coral rocks, coll. A. Anker, 16 November 2012 [PZD- 653], MNHN-IU- 2013 -0627. Description. See Berggren (1992) and Komai (2004). Colouration in life. Body and appendages whitish with some pale yellow tinge; orange ovary partly visible through semitransparent integument (Fig. 2 A). Distribution. Indo-West Pacific: Mozambique (Inhaca Island), Japan (Ryukyu Islands), Indonesia (Lombok) (Berggren 1992; Komai 2004; Anker et al. 2015), Papua New Guinea (Madang) (present study). Habitat. Intertidal and shallow subtidal to about 5 m; on sand under coral rubble. Remarks. Naushonia lactoalbida was originally described based on three specimens, including female holotype, male allotype and female paratype, all collected on tidal flats of Inhaca Island, Mozambique (Berggren 1992). Subsequently, Komai (2004) reported a single female specimen referable to this species, collected off the coast of Iriomote Island, Ryukyu Islands, Japan, thereby considerably extending its geographic range. More recently, Anker et al. (2015) reported two specimens of N. lactoalbida from shallow sea grass flats in western Lombok, Indonesia. The ovigerous female from Madang extends the geographic range of this species further eastward, to the eastern coast of New Guinea, whereas the female from Okinawa confirms its presence in southern Japan. Among the species characterized by the non-carinate pleomeres and rounded pleura, N. lactoalbida is readily recognizable by the presence of spines on the gastric carinae of the carapace and also by the presence of several small spines on the anterolateral areas of the carapace (Berggren 1992; Komai 2004). The specimen from Okinawa differs from the previous descriptions of N. lactoalbida (cf. Berggren 1992; Komai 2004) in possessing several small spines or tubercles on the postcervical area of the carapace and having noticeably stronger teeth on the middorsal carina of the carapace (Fig. 2 B). These two differences can also be seen in one of the specimens from Lombok illustrated by Anker et al. (2015), but are much less marked in the specimen from Madang (Fig. 2 A). We tentatively consider these differences as a size-related intraspecific variation, because both the Okinawa and Lombok specimens are larger than the specimens reported by Berggren (1992) and Komai (2004), or the Madang specimen. In addition, there appear to be some differences in the shape of the rostrum, which is broader and shorter in the Madang specimen (Fig. 2 A) compared to that of the Japanese specimens (Fig. 2 B; see also Komai 2004). Neither Berggren (1992) nor Komai (2004) mentioned the presence of an arthrobranch at the base of the first maxilliped in N. lactoalbida. Our examination of the Okinawa specimen confirmed the presence of a single arthrobranch at the first maxilliped in N. lactoalbida, as in the other four species reported in this study (Table 1).Published as part of Komai, Tomoyuki & Anker, Arthur, 2015, Additional records of the laomediid mud-shrimp genus Naushonia Kingsley, 1897 (Crustacea: Decapoda: Gebiidea), with a revised identification key, pp. 341-360 in Zootaxa 3974 (3) on pages 346-348, DOI: 10.11646/zootaxa.3974.3.3, http://zenodo.org/record/23178
Naushonia lactoalbida Berggren 1992
No full text<i>Naushonia lactoalbida</i> Berggren, 1992 <p>(Fig. 24 B)</p> <p> <i>Naushonia lactoalbida</i> Berggren 1992: 514, figs. 1–6; Komai 2004: 22, figs. 1B, 5, 6.</p> <p> <b>Material examined</b>. Indonesia. 1 female (MZB Cru 4058), western Lombok, Teluk Medana, seagrass flat with sand, mud, some rubble-gravel, burrow, suction pump and digging/sieving, 0.2–0.7 m, leg. D.L. Rahayu <i>et al.</i>, 12 May 2014 [LB-St3-04]; 1 ov. female (ZRC 2014.0743), same collection data [LB-St3-30].</p> <p> <b>Description</b>. See Berggren (1992) and Komai (2004).</p> <p> <b>Habitat</b>. Tidal sand-gravel flats, sometimes mixed with seagrass; in burrows of unknown hosts, possibly Callianassidae; depth range: intertidal and shallow subtidal (0–8 m).</p> <p> <b>Distribution</b>. Indo-West Pacific: Mozambique, Japan, Indonesia (first record) (Berggren 1992; Komai 2004; present study).</p> <p> <b>Remarks</b>. <i>Naushonia lactoalbida</i> is recorded from Indonesia (Lombok) for the first time. Both specimens agree well with the original description by Berggren (1992) and supplementary description by Komai (2004). The mediodorsal carina of the carapace, armed with small teeth, appears to be stronger in the Indonesian specimens (Fig. 24 B), compared to the Japanese material of Komai (2004) and especially the South-East African material of Berggren (1992).</p>Published as part of <i>Anker, Arthur, Pratama, Idham Sumarto, Firdaus, Muhammad & Rahayu, Dwi Listyo, 2015, On some interesting marine decapod crustaceans (Alpheidae, Laomediidae, Strahlaxiidae) from Lombok, Indonesia, pp. 301-342 in Zootaxa 3911 (3)</i> on pages 333-335, DOI: 10.11646/zootaxa.3911.3.1, <a href="http://zenodo.org/record/254427">http://zenodo.org/record/254427</a>
Spongiocaris hexactinellicola Berggren 1993
No full textSpongiocaris hexactinellicola Berggren, 1993 Spongiocaris hexactinellicola Berggren, 1993: 784, figs. 1–5 [type locality 24°30’N 74°28’W, Tartar Bank, Cat Island, Bahamas, 606–610m, in the internal cavity of Euplectella jovis Schmidt, 1880]. Material examined. male (pocl. 4.9mm) non-ovigerous female (pocl. 5.3mm), RMNH.CRUS.D.57262: Stn. CAR. 08, Curaçao, 12°05.064'N, 068°53.900'W, depth 270m, 31.iii.2014, dive with Curasub submersible, from the sponge Heterotella pomponae Reiswig, 2000, collected by Cessa Rauch. Distribution. Spongiocaris hexactinellicola is known from the Bahamas (Berggren 1993), from a depth of 606 to 610 meters. The current specimens extend that range southward to the Dutch Caribbean. Host. The type specimens have been recorded from the hexactinellid sponge Euplectella jovis Schmidt, 1880. The hexactinellid Heterotella pomponae Reiswig, 2000 constitutes a new host record. Remarks. Spongiocaris hexactinellicola can be distinguished from its congeners S. cubanica Ortiz, Gómez & Lalana R., 1994, S. goyi Ortiz, Lalana, Varela, 2007, S. japonica (Kubo, 1942), S. koehleri (Caullery, 1896), S. neocaledonensis Goy, 2015, S. panglao Komai, De Grave & Saito, 2016, S. semiteres Bruce & Baba, 1973, S. tuerkayi Komai, De Grave & Saito, 2016, S. yaldwyni Bruce & Baba, 1973, by the following characters: 1) distally triangular rostrum not overreaching second segment of antennular peduncle, 2) rostrum with 4–7 dorsal teeth and one ventrolateral spine on both sides, without midventral teeth, 3) antennal tooth present, 4) hepatic tooth absent, 5) produced pterygostomial angle with pterygostomial tooth, 6) sixth pleomere unarmed on dorsal surface, 7) telson with median posterior marginal tooth and 6–9 acute teeth laterally, 8) scaphocerite subrectangular, not semicircular, with distal lamina overreaching distolateral tooth, and with series of acute teeth along lateral margin, 9) third maxilliped with epipod, meral segment with distolateral spine, 10) carpus and merus of third pereiopod unarmed, 11) ventral terminal spine on carpus of pereiopods IV and V present, 12) accessory teeth at base of inner main tooth of dactylus of pereiopod IV and V. The current specimens show some variation in the amount of marginal and postmarginal spines on the anteroventral margin of the carapace: 2 or 3 marginal spines and 0 or 1 postmarginal spines were counted, deviating from the 4 or 5 marginal and 1 or 2 postmarginal spines described for type series. This difference can possibly be explained by the fact that the current specimens are smaller than the specimens described by Berggren (1993).Published as part of Olthof, Gabriël, Becking, Leontine E. & Fransen, Charles H. J. M., 2018, On a collection of deep-water shrimp (Crustacea, Decapoda) from the Dutch Caribbean, with the description of a new species of Pseudocoutierea, pp. 533-548 in Zootaxa 4415 (3) on pages 534-535, DOI: 10.11646/zootaxa.4415.3.7, http://zenodo.org/record/124220
Metabolite-induced in vivo fabrication of substrate-free organic bioelectronics
No full text<p>Dataset accompanying paper: Metabolite-induced in vivo fabrication of substrate-free organic bioelectronics. </p>
<p>Corresponding author: M. Berggren</p>
Approximate solution of the pairing Hamiltonian in the Berggren basis
No full textPresented at the XXXIV Mazurian Lakes Conference on Physics, Piaski, Poland, September 6-13, 2015International audienceWe derive the approximate solution for the pairing Hamiltonian in the Berggren ensemble of single particle states including bound, resonance andnon-resonant scattering states
HYDROPEROXIDE-INDUCED BRONCHOCONSTRICTION AND VASOCONSTRICTION IN THE ISOLATED RAT LUNG
No full textThe effects of different hydroperoxides on lung mechanics and perfusate flow rate and their mechanisms of action were studied in isolated perfused rat lungs. The administration of hydrogen peroxide, t-butyl hydroperoxide, cumene hydroperoxide, linoleic acid hydroperoxide, and linoleic acid ethylester hydroperoxide (0.1-2 mM) to the perfusate caused a marked decreased in lung compliance, conductance, and perfusate flow rate, with constriction strength of t-butyl hydroperoxide > hydrogen peroxide > cumene hydro-peroxide > linoleic acid ethylester hydroperoxide > linoleic acid hydroperoxide. Although the hydroperoxides probably had to enter lung cells to exert their effects, no relationship was found between constriction strength and amount of hydroperoxide taken up by the lung. Reduced sensitivity was apparent after repeated dosing, depending on the length of time between dosing. The addition of the iron chelator Desferal (1 mM) had no effect on the hydroperoxide-induced broncho- and vasoconstriction, although free iron was reduced by 50% in the lungs. The administration of the antioxidants diphenyl-p-phenylenediamine (50-mu-M) or butylated hydroxyanisole (200-mu-M) to the perfusate 20 min prior to the hydroperoxide attenuated the hydroperoxide-induced effects as well as arachidonic acid-induced broncho- and vasoconstruction. Our findings have shown that hydroperoxides that can enter the lung cells will also induce both vaso- and bronchoconstriction in the isolated perfused rat lung
MECHANISMS OF HYDROPEROXIDE-INDUCED BRONCHOCONSTRICTION AND VASOCONSTRICTION IN ISOLATED AND PERFUSED RAT LUNG
No full textThe mechanisms of hydroperoxide-induced broncho- and vasoconstriction were investigated in the perfused and ventilated rat lung. Hydrogen peroxide (500 mu-M), tertiary butylhydroperoxide (500 mu-M) and arachidonic acid (100 mu-M) induced similar profiles of broncho- and vasoconstriction which could be prevented by the inhibitor of cyclooxygenase, diclofenac (100 mu-M) but not by nordihydroguaiaretic acid (5 and 25 mu-M), an inhibitor of lipoxygenase. The hydroperoxides also caused a time-dependent increase in the levels of thromboxane and prostacycline, products of cyclooxygenase. Furthermore, the thromboxane agonist, U44069 (100 pmoles), caused a very rapid broncho- and vasoconstriction that was preventable by the thromboxane antagonist L655.240 (1 mu-M). L655.240 also inhibited hydrogen peroxide-induced broncho- and vasoconstriction. The phospholipase A2 inhibitors, quinacrine (100 mu-M) and dibucaine (100 mu-M), did not prevent hydroperoxide-induced broncho- and vasoconstriction. The Ca2+ chelator, EGTA, prevented hydroperoxide and arachidonic acid-induced lung constriction, although it did not inhibit the release of thromboxane. The infusion of arachidonic acid and hydroperoxides resulted in edema in the lung which was prevented by prior administration of diclofenac, indomethacin or L655.240. These results indicate that hydroperoxide-induced broncho- and vasoconstriction and lung edema are mediated by thromboxane, a product of cyclooxygenase. The mechanism of hydroperoxide-induced release of arachidonic acid is not clear but does not seem to involve Ca2+ nor the activation of phospholipase A2
- …
