2,777 research outputs found
Rhinelepini Armbruster 2004, NEW TRIBE
No full textRHINELEPINI NEW TRIBE <p>Includes:</p> <p> <i>Canthopomus</i> Eigenmann, 1910 (synonym of <i>Pseudorinelepis</i>)</p> <p> <i>Monistiancistrus</i> Fowler, 1939 (synonym of <i>Pseudorinelepis</i>)</p> <p> <i>Pogonopoma</i> Regan, 1904</p> <p> <i>Pogonopomoides</i> Gosline, 1947 (synonym of <i>Pogonopoma</i>)</p> <p> <i>Pseudorinelepis</i> Bleeker, 1862</p> <p> <i>Rhinelepis</i> Valenciennes, 1829</p> <p> <i>Diagnosis:</i> The Rhinelepini is diagnosed by two unique characteristics: an upper pharyngeal tooth plate with a lateral shelf (31: 1) and a large, U-shaped, two-part diverticulum of the digestive tract (211: 1-3). Other characteristics considered synapomorphic for the Rhinelepini are: loss of the second basibranchial (3: 2), interhyal not contacting the cartilaginous section between the hyomandibula and quadrate (26: 0), a long ventromesial process of the palatine (59: 1), a very large, almost square nasal (105: 2), a flattened and widened parasphenoid (106: 1), a loss of ribs behind the enlarged rib of the sixth vertebral centrum (129: 1), at least a partial exposure of the coracoid strut (162: 0), circular (vs. bilobed) pupils, and a straight oesophagus to which the intestine does not pass dorsally (210: 1). See description and diagnosis of the Rhinelepini in Armbruster (1998b) and Quevedo & Reis (2002).</p> <p> <i>Comparisons:</i> The Rhinelepini can be distinguished from <i>Corymbophanes</i> by the lack of a postdorsal ridge of three or more median preadipose plates, and by having five (vs. three) rows of plates on the caudal peduncle, from the Hypostomini and the Pterygoplichthini by having one unbranched and five branched anal-fin rays (vs. one unbranched and four branched rays) and by lacking the dorsal flap of the iris, and from the Ancistrini and the Pterygoplichthini by lacking highly evertible cheek plates.</p>Published as part of <i>Armbruster, Jonathan W., 2004, Phylogenetic relationships of the suckermouth armoured catfishes (Loricariidae) with emphasis on the Hypostominae and the Ancistrinae, pp. 1-80 in Zoological Journal of the Linnean Society 141 (1)</i> on pages 61-62, DOI: 10.1111/j.1096-3642.2004.00109.x, <a href="http://zenodo.org/record/5429286">http://zenodo.org/record/5429286</a>
Anchee Min and Elif Armbruster discuss, The Chinese-American Dream at Ford Hall Forum, video recording, 5/23/2013
No full textTwenty years after penning her first memoir on growing up in China during the Cultural Revolution, author Anchee Min now releases The Cooked Seed: the true story of her journey to, and within, America. Min draws us in to bear witness to her trek from a land of deprivation to one of surrounding bounty that is just out of her reach. She works five jobs at once and suffers rape, exhaustion, and divorce. As these revolutionary personal events shape her world view, they culminate in the biggest shift of all: the birth of her daughter. Moderator Elif Armbruster (Associate Professor of English, Suffolk University) helps Min present her unique immigration narrative within the universal struggle of building a life despite precious few fundamental tools. Anchee Min will be signing and selling copies of her book, The Cooked Seed, at the end of the event.https://dc.suffolk.edu/fhf-av/1131/thumbnail.jp
Pseudancistrus sidereus Armbruster, 2004, new species
No full textPseudancistrus sidereus new species Fig. 3 Holotype: VENEZUELA, Amazonas, Ro Orinoco dr.: MCNG 26125, 175.6, Río Siapa from 10 to 15 km downstream, Río Casiquiare – Río Negro dr., 01.50000°, 065.71667°, ABD and F. Morillo, 20 April 1991. Paratypes. VENEZUELA, Amazonas, Río Orinoco dr.: MCNG 48261, 1, 1 CS, 149.8, AUM 37562, 1, 148.7, same data as holotype. FMNH 105294, 4, 149.5 176.7, Río Orinoco ca. 5 h above Atabapo by falca; at rocks and beach, B. Chernoff, A. and D. Machado, and J. Wheeler, 23 January 1991. Diagnosis: Pseudancistrus sidereus is diagnosed by a unique modification of the ventral plates on the caudal peduncle. In loricariids, the plates of the ventral row on the caudal peduncle are typically bent at an approximately 90 ° angle to follow the contour of the body. The bend is often the site of a slight keel formed from one or more rows of slightly longer odontodes. In P. sidereus, the keel is accentuated by having the dorsal laminae of the plates strongly concave. Although some loricariids may have the dorsal laminae slightly concave, it is much more pronounced in P. s i d e re u s. Pseudancistrus sidereus can be separated from all other species of the Ancistrini by the presence of the keel mentioned above and by the presence of a single large white to yellow spot located at the center of the posterior lateral plates. The only species with a similar coloration are some Hypancistrus and some Panaque, both of which have far fewer than 25 teeth per jaw ramus (vs. much more than 25 teeth), some other species of Pseudancistrus which have hypertrophied odontodes along the snout in males and females (vs. no hypertrophied snout odontodes), and have the dorsal fin reaching at least the preadipose plate when depressed (vs. about two plates anterior to preadipose plate); and some Hemiancistrus and Peckoltia which generally have the spots much more diffuse (vs. borders of spots distinct) and have the dorsal fin reaching at least the preadipose plate when depressed (vs. about two plates anterior to preadipose plate). Description. Fairly large loricariids, largest specimen 176.7 mm SL. Body elongate, fairly narrow, and dorsoventrally flattened. Head and anterior part of trunk gently sloped from snout tip to dorsalfin origin, dorsal profile of body straight to adipose fin with slight decrease in depth, dorsal profile of caudal peduncle very concave, shallowest at posterior insertion of adipose fin. Ventral surface flat. Head contours smooth. Slight, rounded ridge from anterolateral corner of nares, above orbit to posterior edge of pteroticsupracleithrum, dorsal margin of orbit higher than mesial portion of head. Mesethmoid slightly higher than lateral surface of head forming rounded ridge on snout, continued posterior to mesethmoid and terminating at level of posterior margin of orbits. Supraoccipital with slight posterior point medially. Following head bones supporting odontodes: frontal, infraorbitals, opercle, nasal, pteroticsupracleithrum, sphenotic, supraoccipital, and suprapreopercle. Lips wide, fairly thin. Upper lip with wide, thin papillae. Lower lip with small papillae anteriorly, a band of larger papillae, and then smaller papillae posteriorly, papillae fading towards posterior edge. Maxillary barbel only barbel present, not reaching base of evertible cheek plates. Mouth with small, narrow buccal papilla. Iris with small dorsal flap, not reaching ventral to center of pupil. 25 plates in median series. Ventral plates forming a right angle on caudal peduncle with dorsal margin of plates concave forming a strong keel along lower portion of caudal peduncle. Dorsal plate series bent between dorsal and adipose fins to form slight ridge, ridges on two sides converging just posterior to insertion of adiposefin spine. Inframedian plate series bent in middle from cleithrum to insertion of pelvicfin forming slight keel. Abdomen naked except for some small, embedded plates laterally between pectoral and pelvic fins. Five rows of plates on caudal peduncle. 18–39 (average = 28, N= 7) evertible cheek odontodes. Evertible cheek odontodes fairly short, longest reaches posterodorsal corner of opercular opening. Evertible cheek odontodes supported by plates than can be everted up to approximately 90 ° from the head. Hypertrophied cheek odontodes relatively weak. Single adult male with modestly hypertrophied odontodes on tip of pectoralfin spine, females with odontodes on tip of pectoralfin spine slightly longer than those at base (Fig. 3). All fin spines and rays supporting odontodes. Dorsal fin II 7; dorsalfin spinelet Vshaped, dorsalfin lock functional; dorsalfin spine elongated relative to other fin rays in some specimens making edge of fin emarginate; dorsal fin not reaching adipose fin when adpressed. Adipose fin with single median preadipose plate and fairly long curved spine. Caudal fin I 14 I; caudal fin forked, lower lobe longer than upper; usually six dorsal and five ventral procurrent caudalfin spines. Pectoral fin I 6; pectoralfin spine reaching posterior insertion of pelvic fin to slightly beyond base of pelvic fin when adpressed ventral to pelvic fin. Pelvic fin I 5; pelvicfin spine reaching end of base of anal fin when adpressed. Anal fin I 4; unbranched analfin spine ray two thirds the length of the first branched ray. First analfin pterygiophore not exposed to form a platelike structure. Teeth very long and bicuspid with a longer, median lobe. 73–85 dentary teeth (median = 77, N= 7). 78–93 premaxillary teeth (median = 84, N= 7). Jaws very wide, dentaries forming a very oblique angle, premaxillaries forming a gentle arc. Color. Ground color dark brown dorsally and laterally, fading to tan on ventral half of inframedian plate series, tan ventrally. Head with small white spots (possibly yellow in life), spots getting larger posteriorly. Usually 2–3 spots per plate anteriorly and one posteriorly. Ventral spots lengthening dorsoventrally on inframedian and ventral plates series until fading into ventral coloration. Ventral surface of upper lip brown. Dorsalfin membranes hyaline or with slight spotting; dorsalfin spine and rays with oval spots. Adipose fin with weak spots or mottled. Caudal fin distinctly lighter ventrally; spots on ventral lobe fairly large and round and spots on dorsal lobe smaller and oval. Leading edge of pectoralfin spine light; pectoralfin spine with or without spots; small round spots centered on pectoralfin rays; color slightly fading posteriorly on pectoral fin. Pelvic fin with larger spots fading distally, spots on both rays and membrane. Anal fin tan or mottled. Sexual dimorphism. One potentially nuptial male examined with hypertrophied odontodes on the sides similar to Peckoltia and Panaque (Panaqolus), but shorter and sharper. Hypertrophied odontodes on pectoralfin spine larger in the potentially nuptial male. Range: Known from the Río Casiquiare drainage and the upper Río Orinoco drainage of Amazonas, Venezuela (Fig. 4). Etymology: From the Latin sidereus for starry. Named because the dark background makes the white to gold spots look like stars.Published as part of Armbruster, Jonathan W., 2004, Pseudancistrus sidereus, a new species from southern Venezuela (Siluriformes: Loricariidae) with a redescription of Pseudancistrus, pp. 1-15 in Zootaxa 628 on pages 8-11, DOI: 10.5281/zenodo.15852
Update on chloroplast research
No full textChloroplasts, the green differentiation form of plastids, are the sites of photosynthesis and other important plant functions. Genetic and genomic technologies have greatly boosted the rate of discovery and functional characterization of chloroplast proteins during the past decade. Indeed, data obtained using high-throughput methodologies, in particular proteomics and transcriptomics, are now routinely used to assign functions to chloroplast proteins. Our knowledge of many chloroplast processes, notably photosynthesis and photorespiration, has reached such an advanced state that biotechnological approaches to crop improvement now seem feasible. Meanwhile, efforts to identify the entire complement of chloroplast proteins and their interactions are progressing rapidly, making the organelle a prime target for systems biology research in plants
Keeping the faith: Syriac Christian diasporas
No full textIndigenous Christian communities in Turkey and the Middle East have declined dramatically in recent years, with large numbers emigrating in the face of violence, war and conflict. Keeping the Faith explores the impact of historical persecution and massmigration on the Suryoye, Syriac Orthodox Christians, from Turkey. Victims of genocide in 1915-16, subjugated by state nationalism in the Turkish Republic, part of the Turkish exodus of guest workers to Europe post 1960 and hemmed in by the Turkish-Kurdish conflict in the last decades of the twentieth century, they dispersed globally from eastern Anatolia. Only a few now remain in Turkey.This book argues that these experiences migrated with those who re-settled abroad and became incorporated into their life story. Heidi Armbruster's ethnographic fieldwork both in rural villages and a monastery in their Anatolian homeland, and with migrants and their families in Berlin and Vienna, allows her to investigate a number of contexts in which Syriac Christians create identities for themselves, contested through the potent symbolic resources of the Aramaic language, Christian religion, and Assyrian and Aramean ethnicity.Suryoye personal relationships to a collective history are not accessed through historians' accounts or institutional narratives, but through the intimate social worlds the author sensitively observes, in which experience and memories are formed, and in which individuals articulate their stake in a larger and more collective story. This discourse centres on 'community endangerment' and lies at the heart of negotiations of identity, family and group membership that are key to the spatial and historical processes of migration and diaspora. This account delineates with wonderful clarity how 'keeping the faith', has both imperilled and formed the foundations of continuity and community, for this fascinating group
Crystal structure and crystal-chemistry of vanadio-pargasite: a new amphibole from Southern Lake Baikal, Siberia, Russia
No full textThe crystal structure of a new member of the calcium amphibole subgroup, vanadio-pargasite ideally NaCa2(Mg4V3+)Si6Al2O22(OH)2 with empirical formula (K0.07Na0.90)(Na0.05Ca1.91Mg0.04)Σ2.00(Mg4.02Cr0.05V0.68Al0.23Ti0.02)Σ5.00(Si6.09Al1.91)Σ8.00O22(OH1.67F0.33)Σ2.00, was studied by single-crystal X-ray diffraction and refined to R1 of 0.0181. It is monoclinic, space group C2/m, unit-cell parameters a = 9.89560(10), b = 17.9970(2), c = 5.29700 Å, β = 105.391(1)°, and V = 909.52 Å3. The mineral is isostructural with the amphiboles pargasite, magnesio-hastingsite, chromio-pargasite and Mn3+-rich pargasite. Site populations were derived from the structure refinement and EMP analysis, and validated on the basis of OH-stretching FTIR spectroscopy. Accordingly, V is ordered at M(2) together with minor [6]Al, while a low amount of [6]Al is present at M(3)
Neue Horizonte? Sozialwissenschaftliche Forschung über Geschlechter und Geschlechterverhältnisse
No full textArmbruster CL, Müller U, Stein-Hilbers M, eds. Neue Horizonte? Sozialwissenschaftliche Forschung über Geschlechter und Geschlechterverhältnisse. Geschlecht und Gesellschaft. Vol 1. Opladen: Leske + Budrich; 1995
Pseudancistrus reus Armbruster & Taphorn, 2008, new species
No full textPseudancistrus reus, new species (Fig. 1, Table 1) Holotype: MCNG 18447, 72.2 mm SL, Venezuela, Estado Bolivar, Río Caroní in a small side channel very close to the confluence of the Río Claro, 07° 54 ' 30 "N, 063°02' 50 "W, D.C. Taphorn, O. León M., L. Balbás, R. Smith, J. García T. and A. Barbarino, 6 March 1988. Paratype: AUM 47152, 1, 76.5 mm SL, same locality data as holotype. Diagnosis: Pseudancistrus reus can be separated from all other described Pseudancistrus by the presence of bars on the body (vs. spots, mottling, or entirely dark coloration), and from all examined Pseudancistrus except P. genisetiger and P. papariae by having an incomplete mid-dorsal plate row with 18 plates (vs. a complete mid-dorsal row with 21–25 plates). In the one specimen of P. genisetiger examined and the holotype of P. papariae, the mid-dorsal row has 14 plates, then a break around the adipose fin and then two more plates at the posterior end of the caudal peduncle (vs. 18 continuous plates in P. re u s). The other specimen of P. papariae (AUM 20768) examined had a complete mid-dorsal row (the plate rows were not examined on the paratypes). Description: Morphometrics presented in Table 1. Meristics based on two individuals. Largest specimen 76.5 mm SL. Body very dorsoventrally flattened and fairly narrow. Head and nape gently convex to maximum depth at insertion of dorsal fin, then very gradually decreasing to dorsal procurrent caudal-fin spines, then angled dorsally ~ 45 ° to caudal fin. Ventral surface flat to ventral procurrent caudal fin rays, then angled ventrally ~ 30 ° to caudal fin. Eyes set fairly close together, almost completely dorsally oriented. In dorsal profile, head broadly triangular, body widest at pectoral-fin insertions, then narrowing slightly to dorsal-fin origin, then expanding to about middle of dorsal fin before tapering to end of caudal peduncle. Anterior margin of snout with small to medium-sized hypertrophied odontodes; tentacules of snout odontodes not longer than odontodes, unbranched. Evertible cheek plates not strongly evertible (to ~ 30 ° from head), with relatively short hypertrophied odontodes that reach maximally to posterior edge of pectoral-fin spine. Head contours smooth with slightly raised supraorbital crest from anterolateral corner of nares to posterior edge of pterotic. Mouth relatively small with premaxillary and dentary tooth cups forming gentle arcs. Premaxillary teeth 62–77; dentary teeth 68. Teeth viliform and bicuspid with very short cusps (medial cusp longer than lateral cusp). Lateral edge of oral disk not extending beyond lateral margins of head. Maxillary barbels short, not reaching base of evertible cheek plates. Ventral surface of lips papillose. Papillae increasing in size distally. Dentary papillae absent. Buccal papilla absent in one individual and barely present in other. Buccal valve fairly unusual, with median, ridge-like, thickened region, and very thin, transluscent lateral wings (usually in loricariids lateral wings are fairly thick and only slightly thinner than median ridge). Dorsal fin II, 7; dorsal-fin spinelet short and V -shaped; dorsal-fin lock functional. Dorsal fin short, reaching preadipose plate when adpressed. First dorsal-fin ray longer than dorsal-fin spine. Pectoral fin I, 6; pectoral spine short (just slightly longer than pelvic spine) extending to middle of pelvic fin when adpressed. Pectoralfin spine fairly weak with odontodes that increase in size and density distally; tentacules of pectoral-fin spine not longer than odontodes, unbranched. Distal odontodes slightly elongated. Anterior pectoral-fin rays longer than pectoral-fin spine, decreasing to about half of length of spine posteriorly. Pelvic fin I, 5; pelvic-fin spine weak, reaching middle of base of anal fin when adpressed; anterior pelvic-fin rays longer than pelvic-fin spine with posterior margin of fin curving out beyond posterior tip of spine. Anal fin I, 5; anterior anal-fin rays slightly longer than unbranched anal-fin ray, posterior anal-fin rays slightly shorter than unbranched anal-fin ray. First anal-fin pterygiophore not exposed to form a plate-like structure. Adipose-fin spine straight with adipose membrane extending beyond posterior extent of spine. Caudal fin I, 14,I; at least upper caudal-fin spines longer than caudal-fin rays (lower spines broken on both specimens). Dorsal procurrent caudal-fin rays four or five, ventral procurrent caudal-fin rays three. Posterior caudal-fin margin slightly concave. Rays of all fins supporting small odontodes. Median plate series with 20–22 plates. Ventral plates forming gentle arc on caudal peduncle and not forming strong rounded keel. Plates in mid-dorsal row weakly arched submedially forming low ridge from cleithrum to posterior insertion of pelvic fin. Four rows of plates on caudal peduncle (mid-dorsal plate series ending at level of adipose fin). Abdomen naked. Color: Alcohol preserved specimens mostly brown on head and sides, lighter tan spots on nose and top of head, as well as below and behind eye. On dorsum of body of paratype, three lighter tan saddles, first from middle of dorsal fin base to end of dorsal fin base, next begins just behind the dorsal fin base and extends posterior to about one plate before adipose insertion, last begins just anterior to adipose insertion and continues to caudal base. No saddles in smaller specimen (holotype), vertical bars extend up from sides to unite at midline. Sides brown with darker brown oblique narrow vertical bars; six bars in paratype, stronger posteriorly; nine bars in holotype that begin under middle of dorsal-fin base. Undersurfaces lighter, creamy white on unplated breast and abdomen, tan on plated caudal peduncle. Oral disk with inner papillated surfaces pale tan but brown on outer anterior margin. All fin spines and rays with alternating wide dark and narrow light bands (pattern most evident in caudal and dorsal fin, least evident in pectorals); fin membranes hyaline or dusky with melanophores. Small but distinct black spot present at base of anteriormost dorsal-fin membrane in both specimens. Range: Known only from the type locality in the Río Caroní, Bolivar, Venezuela (Fig. 5). The type locality is now part of the Caruachi Reservoir. Therefore, a status survey of the species should be performed to determine the extent of its range. Water conditions: The following water conditions were recorded at the time of capture: water tea-colored, low conductivity (12 Μmho/cm), visibility ~ 2m, moderate current, pH 6.6, temperature 28 °C. Etymology: From the Latin reus, meaning one who is accused or arraigned like a defendant, prisoner, criminal, or culprit; in reference to the barred pattern that looks like the stripes of the stereotypical prisoner’s uniform. Treated as a noun in apposition.Published as part of Armbruster, Jonathan W. & Taphorn, Donald C., 2008, A new species of Pseudancistrus from the Río Caroní, Venezuela (Siluriformes: Loricariidae), pp. 33-41 in Zootaxa 1731 on pages 34-38, DOI: 10.5281/zenodo.27420
Simulation of farm bargaining board policies in western late potato system
No full textWalter J. Armbruster, Leon Garoian, Albert N. Halter, and James G. Youde.This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.Includes bibliographical references (page 49).Mode of access: Internet from the Oregon Government Publications Collection.Text in English
Nuclear insertions of organellarDNA can create novel patches of functional exon sequences
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