Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Richard J. Hoffmann"'
Autor:
Richard J. Hoffmann
Publikováno v:
Greek, Roman, and Byzantine Studies, Vol 16, Iss 4, Pp 359-377 (2003)
[site under construction]
Externí odkaz:
https://doaj.org/article/6918861643464efea5f4c416c2db3717
Autor:
William E. Zamer, Richard J. Hoffmann
Publikováno v:
Journal of Experimental Marine Biology and Ecology. 171:23-37
Utilization of pyruvate as a precursor for glycogen, lipid. and protein biosynthesis was investigated in freshly collected and laboratory-acclimated individuals of the sea anemone Metridium senile (L.). Pyruvate uptake rates, oxidation of pyruvate to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::077c92b596813d9793da2bff713d828e
https://doi.org/10.1016/0022-0981(93)90137-d
https://doi.org/10.1016/0022-0981(93)90137-d
Publikováno v:
Journal of Experimental Zoology. 231:185-197
The cytosolic (cAAT) and mitochondrial (mAAT) aspartate aminotransferases were partially purified from gill tissue of the ribbed mussel, Modiolus demissus, and individually characterized with respect to heat stability, electrophoretic mobility, pH op
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5551d555b7011ac0923ce26adb73bdc5
https://doi.org/10.1002/jez.1402310204
https://doi.org/10.1002/jez.1402310204
Autor:
Richard J. Hoffmann
Publikováno v:
The Biological Bulletin. 151:478-488
1. Metridium senile was studied for phosphohexose-isomerase variation at three locations on Cape Cod, Massachusetts: Woods Hole, Cape Cod Canal, and Barnstable Town Boat Harbor. 2. All three locations exhibited significant polymorphism for PHI. 3. Ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c8be6c7ca07c12be4101a99c85b5f704
https://doi.org/10.2307/1540501
https://doi.org/10.2307/1540501
Autor:
Richard J. Hoffmann
Publikováno v:
Journal of Experimental Zoology. 227:361-370
The allozymes involved in a one-locus, two-allele polymorphism for phosphoglucose isomerase from populations of the sea anemone Metridium senile from the northeast coast of North America exhibit different heat stabilities. The electrophoretically slo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6668b74950a68e3f143a5f73af9ff5c
https://doi.org/10.1002/jez.1402270305
https://doi.org/10.1002/jez.1402270305
Autor:
Richard J. Hoffmann
Publikováno v:
Journal of Insect Physiology. 20:1913-1924
Photoperiod and temperature were examined for their effects on the four major pteridine components of the wings of Colias eurytheme . Orange individuals show reduced pteridine pigmentation in response to short photoperiods, but make no significant ad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f357ec3979b9ec56c596480ecc3b020d
https://doi.org/10.1016/0022-1910(74)90098-5
https://doi.org/10.1016/0022-1910(74)90098-5
Publikováno v:
American Zoologist. 19:699-713
Our studies of sea anemones reveal that asexual reproduction can lead to the amplification of particularly successful genotypes Populations of Haliplanella luciae studied to date are characterized bv exclusively asexual reproduction and typically are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e8a5fddeb1cebf4eea8b7a637581561c
https://doi.org/10.1093/icb/19.3.699
https://doi.org/10.1093/icb/19.3.699
Autor:
Lewis E. Deaton, Richard J. Hoffmann
Publikováno v:
Comparative Biochemistry and Physiology Part C: Comparative Pharmacology. 91:187-191
1. The anemone Metridium senile survives salinities from seawater (950 mOsm) to 55% SW (520 mOsm) for at least two weeks. Animals exposed to 40% SW (380 mOsm) die within three days. 2. The tissue amino acid content of M. senile acclimated to 950 mOsm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4857974d7452f7375c310f4c3ffad82
https://doi.org/10.1016/0742-8413(88)90185-5
https://doi.org/10.1016/0742-8413(88)90185-5
Autor:
Richard J. Hoffmann, Nancy L. Nicklas
Publikováno v:
The Biological Bulletin. 160:123-135
Electrophoretic studies and breeding experiments show that the terrestrial pulmonate slug, Deroceras laeve, usually reproduces by apomictic parthenogenesis, although reciprocal outcrossing in complete hermaphrodites occurs occasionally. The sexual st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99ea7dd5ed05dc9b196f5c0630bd56b9
https://doi.org/10.2307/1540906
https://doi.org/10.2307/1540906
Autor:
Richard J. Hoffmann
Publikováno v:
Evolution. 27:387-397
Organisms respond in a variety of ways to changing environmental conditions. They can maintain a single, broadly adapted phenotype in the face of environmental fluctuations with the expectation that, on the average, at least some members of a populat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fecd9497931833b39cd2533d5db27396
https://doi.org/10.1111/j.1558-5646.1973.tb00685.x
https://doi.org/10.1111/j.1558-5646.1973.tb00685.x