Hippodonta hungarica
(Grunow) Lange-Bertalot, Metzeltin and Witkowski 1996 Category: Symmetrical biraphid
BASIONYM: Navicula hungarica Grunow 1860
SYNONYM(S): Navicula capitata var. hungarica (Grunow) Ross
LM scalebar = 10 µm = 80 pixels.
Observations
Contributor: Marina Potapova -
Length Range: 10-25 µm
Width Range: 4.2-6.5 µm
Striae in 10 µm: 8-11
Description
Valves are elliptical-lanceolate with rounded apices. The axial area is narrow and linear. The central area is small and round or elliptical. The raphe is straight, filiform, with slightly expanded external proximal ends. The distal raphe ends are deflected to the secondary valve side. The striae are biseriate. The areolae are elongated, oriented in the apical axis. Internally the striae open into shallow alveoli. A hyaline area and one or two apical rows of areolae are present at each end of the valve.
Original Description
Basionym: Navicula hungarica
Author: Grunow 1860
Length Range: µm
Striae in 10 µm:
Original Description
Original Images
Cite This Page:
Potapova, M. (). Hippodonta hungarica . In Diatoms of the United States. Retrieved May 21, 2013, from http://westerndiatoms.colorado.edu/taxa/species/hippodonta_hungarica
Species: Hippodonta hungarica
Contributor: Marina Potapova
Reviewer: Pat Kociolek
Image Credit: Marina Potapova
- Valves 4.2-6.5 μm wide
- Valves elliptical-lanceolate with rounded apices
- Striae biseriate, 8-11 in 10 μm
Valves are elliptical-lanceolate with rounded apices. The striae are biseriate and number 8-11 in 10 μm. A hyaline area and one or two apical rows of areolae are present at each end of the valve.
Compare
Hippodonta hungarica differs from H. capitata by elliptical-lanceolate valves with rounded ends. It is somewhat similar in valve outline to H. capitata subsp. iberoamericana, which has more protracted valve ends and, on average, a higher stria density and more narrow striae.
Hippodonta capitata
Hippodonta capitata subsp. iberoamericana
Citations
Cox, E.J. (1987). Studies on the diatom genus Navicula Bory. VI. The identity, structure and ecology of some freshwater species. Diatom Research 2: 159-174.
Grunow, A. (1860). Uber neue oder ungenügend gekannte Algen. Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wein, 10: 503-582.
Lange-Bertalot, H. (2001). Navicula sensu stricto, 10 genera separated from Navicula sensu lato, Frustulia. Diatoms of Europe 2: 1-526.
Lange-Bertalot, H., Metzeltin, D. and Witkowski, A. (1996). Hippodonta gen. nov. Umschreibung und Begrundung einer neuen Gattung der Naviculaceae. Iconographia Diatomologica 4: 247-275.
Patrick, R.M. and Reimer, C.W. (1966). The Diatoms of the United States exclusive of Alaska and Hawaii, V. 1. Monographs of the Academy of Natural Sciences of Philadelphia 13.
Links & ID's
Index Nominum Algarum (INA)
California Academy of Sciences (CAS)
North American Diatom Ecological Database (NADED)
NADED ID: 213002
Autecology Discussion
EMAP Assessment
Sampling for the Environmental Protection Agency (EPA) western Environmental Monitoring and Assessment Program (EMAP) study was completed during the years 2000-2004 (see citations at bottom of this page). Streams and rivers in 12 western states (Arizona, California, Colorado, Idaho, Montana, Nevada, North Dakota, Oregon, South Dakota, Utah, Washington and Wyoming). Over 1200 sites on streams and rivers in 12 western states (Arizona, California, Colorado, Idaho, Montana, Nevada, North Dakota, Oregon, South Dakota, Utah, Washington and Wyoming) were selected for sampling based on a stratified randomized design. This type of design insures that ecological resources are sampled in proportion to their actual geographical presence. Stratified randomized design also allows for estimates of stream length with a known confidence in several “condition classes” (good or least-disturbed, intermediately-disturbed, and poor or most-disturbed) for biotic condition, chemistry and habitat.
EMAP Distribution
Hippodonta hungarica
Distribution
The distribution map represents the relative abundance of this Hippodonta hungarica in the western EMAP study. Relative abundance is a measure of the proportion of cells of this species based on a "fixed count" of 300 total diatom cells counted and identified. Each of the western EMAP sample sites is shown, either with a black dot for sites where Hippodonta hungarica was not recorded, or with a red circle indicating the relative abundance of Hippodonta hungarica.
Note that the size of the proportional symbols varies between species to help show both abundant and rare species.
Scale for the map to the left
EMAP Response Plots
Hippodonta hungarica
EMAP citations
Results are published in:
Johnson, T., Hermann, K., Spaulding, S., Beyea, B., Theel, C., Sada, R., Bollman, W., Bowman, J., Larsen, A., Vining, K., Ostermiller, J., Petersen, D. Hargett, E. and Zumberge, J. (2009). An ecological assessment of USEPA Region 8 streams and rivers. U.S. Environmental Protection Agency Region 8 Report, 178 p.
Stoddard, J. L., Peck, D. V., Olsen, A. R., Larsen, D. P., Van Sickle, J., Hawkins, C. P., Hughes, R. M., Whittier, T. R., Lomnicky, G. A., Herlihy, A. T., Kaufman, P. R., Peterson, S. A., Ringold, P. L., Paulsen, S. G., and Blair, R. (2005). Environmental Monitoring and Assessment Program (EMAP) western streams and rivers statistical summary. U.S. Environmental Protection Agency Report 620/R-05/006, 1,762 p.
Stoddard, J. L., Peck, D. V., Paulsen, S. G., Van Sickle, J., Hawkins, C. P., Herlihy, A. T., Hughes, R. M., Kaufman, P. R., Larsen, D. P., Lomnicky, G. A., Olsen, A. R., Peterson, S. A., Ringold, P. L., and Whittier, T. R. (2005). An ecological assessment of western streams and rivers. U.S. Environmental Protection Agency Report 620/R-05/005, 49 p.