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Articles 1 - 16 of 16
Full-Text Articles in Life Sciences
Review Of Evolution And The Recognition Concept Of Species: Collected Writings By Hugh E. H. Paterson And Edited By Shane F. Mcevey (Johns Hopkins University, 1993), Daniel R. Brooks
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Review of Evolution and the Recognition Concept of Species: Collected Writings by Hugh E. H. Paterson and Edited by Shane F. McEvey (Johns Hopkins University, 1993).
Ctenascarophis Lesteri N. Sp. And Prospinitectus Exiguus N. Sp. (Nematoda: Cystidicolidae) From The Skipjack Tuna Katsuwonus Pelamis, John L. Crites, Robin M. Overstreet, Molly Maung
Ctenascarophis Lesteri N. Sp. And Prospinitectus Exiguus N. Sp. (Nematoda: Cystidicolidae) From The Skipjack Tuna Katsuwonus Pelamis, John L. Crites, Robin M. Overstreet, Molly Maung
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Two cystidicolid nematodes, Ctenascarophis lesteri n. sp. and Prospinitectus exiguus n. sp., are described from the skipjack tuna, Katsuwonus pelamis, from Fiji, New Caledonia, Marquesas Islands, New Zealand, Papua New Guinea, and Puerto Rico. The former species differs from Ctenascarophis gastricus, the only other member of the genus, by having comb rows extending farther posterior than two-thirds the body length, to the anus in the female; it also has differently distributed spines on each comb, with a maximum of 32 rather than 8. The male has 7 rows of precloacal longitudinal crests; 3 pairs of precloacal, 1 pair …
Comparative Study Of Adaptive Radiations With An Example Using Parasitic Flatworms (Platyhelminthes: Cercomeria), Daniel R. Brooks, Deborah A. Mclennan
Comparative Study Of Adaptive Radiations With An Example Using Parasitic Flatworms (Platyhelminthes: Cercomeria), Daniel R. Brooks, Deborah A. Mclennan
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Studies of adaptive radiations require robust phylogenies, estimates of species numbers for monophyletic groups within clades, assessments of the adaptive value of putative key innovations, and estimates of the frequency of speciation modes. Four criteria are necessary to identify an adaptive radiation within the parasitic platyhelminths: (I) a group contains significantly more species than its sister group, (2) species richness is apornorphic , (3) apomorphic traits enhance the potential for adaptively driven modes of speciation (sympatric speciation and speciation by peripheral isolation via host switching), and (4) the frequency of adaptively driven speciation modes is high within the group when …
Host Specificity Of Calyptospora Funduli (Apicomplexa: Calyptosporidae) In Atheriniform Fishes, John W. Fournie, Robin M. Overstreet
Host Specificity Of Calyptospora Funduli (Apicomplexa: Calyptosporidae) In Atheriniform Fishes, John W. Fournie, Robin M. Overstreet
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Calyptospora funduli has a broad host specificity, infecting at least 7 natural and 10 additional experimental definitive hosts, all atheriniform fishes within 5 families, but most in the genus Fundulus. Barriers, apparently innate ones, prevent any development of C. funduli in perciform fishes but allow incomplete or abnormal development of the parasite in a few unnatural atheriniform hosts. In the freshwater species Fundulus olivaceus and Fundulus notti, these abnormalities consisted of asynchronous development, degeneration of the parasite in early stages of development, and the formation of numerous macrophage aggregates. Rivulus marmoratus has the ability to eliminate infections with …
Review Of Practical Taxonomic Computing By Richard J. Pankhurst (Cambridge University, 1991), Daniel R. Brooks
Review Of Practical Taxonomic Computing By Richard J. Pankhurst (Cambridge University, 1991), Daniel R. Brooks
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Review of Practical Taxonomic Computing by Richard J. Pankhurst (Cambridge University, 1991).
Extending The Symbiotype Concept To Host Voucher Specimens, Daniel R. Brooks
Extending The Symbiotype Concept To Host Voucher Specimens, Daniel R. Brooks
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Recently, Frey, Yates, Duszynski, Gannon, and Gardner (1992) suggested that parasitologists deposit specimens of hosts from which type specimens of new parasite species are collected. Their proposal was directed especially at systematic and evolutionary biologists. Frey et al. (1992) pointed out that, whether one emphasizes microevolutionary (e.g., Price, 1980) or macroevolutionary (e.g., Brooks and Mc- Lennan, 1993) aspects of parasite evolutionary biology, much of the context of evolution involves hosts. Robust estimates of the selective effects and the patterns of diversification of host associations require the best possible estimates of the host species involved. This is …
Some Platyhelminths Inhabiting White-Throated Sparrows, Zonotrichia Albicollis (Aves: Emberizidae: Emberizinae), From Algonquin Park, Ontario, Canada, Daniel R. Brooks, Eric P. Hoberg, Anne Houtman
Some Platyhelminths Inhabiting White-Throated Sparrows, Zonotrichia Albicollis (Aves: Emberizidae: Emberizinae), From Algonquin Park, Ontario, Canada, Daniel R. Brooks, Eric P. Hoberg, Anne Houtman
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Twenty-two of 26 white-throated sparrows, Zonotrichia albicollis, from Algonquin Park, Ontario, Canada, hosted one or two species of platyhelminths. One species of cestode and three of digeneans were collected. Anonchotaenia quiscali inhabited 50% of the sparrows. This is the third report of A. quiscali; Z. albicollis is a new host. Brachylecithum nanum inhabited 43%, Zonorchis alveyi 15%, and Prosthogonimus macrorchis 8% of the sparrows examined. Ontario is a new geographic distribution record for all four parasite species. The proportion of hosts infected with two species was not significantly different from expected based on single species prevalences, indicating that …
Lagarocotyle Salamandrae N. Gen., N. Sp. (Monogenoidea, Polyonchoinea, Lagarocotylidae N. Ord.) From The Cloaca Of Rhyacotriton Cascadae Good And Wake (Caudata, Rhyacotritonidae) In Washington State, Delane C. Kritsky, Eric P. Hoberg, K. B. Aubry
Lagarocotyle Salamandrae N. Gen., N. Sp. (Monogenoidea, Polyonchoinea, Lagarocotylidae N. Ord.) From The Cloaca Of Rhyacotriton Cascadae Good And Wake (Caudata, Rhyacotritonidae) In Washington State, Delane C. Kritsky, Eric P. Hoberg, K. B. Aubry
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Lagarocotyle salamandrae n. gen., n. sp. (Lagarocotylidea n. ord., Lagarocotylidae n. fam.) is described from the cloaca of the Cascade torrent salamander, Rhyacotriton cascadae Good and Wake (Rhyacotritonidae), from the Lewis River and Wind River drainages of south-central Washington. Lagarocotyle n. gen. is characterized, in part, by a haptor armed with 16 hooks (14 submarginal, two subcentral), blind intestinal ceca, a large testis surrounding the germarium, an open male copulatory organ (not tubular), a dextroventral vaginal pore (at level of copulatory complex), and an egg lacking filaments; eyes, head organs, seminal receptacle, and haptoral anchors and bars are lacking. Lagarocotyle …
The Phylogenetic Component Of Cooperative Breeding In Perching Birds: A Commentary, Deborah A. Mclennan, Daniel R. Brooks
The Phylogenetic Component Of Cooperative Breeding In Perching Birds: A Commentary, Deborah A. Mclennan, Daniel R. Brooks
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
The study of behavioral and ecological evolution within a phylogenetic context (historical ecology; Brooks and McLennan 1991) is an important component of comparative studies in evolutionary biology. Although the number of historical ecological studies is growing rapidly, this research field is still in its infancy--an infancy whose maturation is hampered by the absence of rigorous phylogenetic hypotheses for many of the groups that have traditionally fascinated behavioral ecologists. In the absence of such critical information, behavioral ecologists are faced with the options either of forming cooperative groups with phylogenetic systematists or of investigating their ecological data based on "trees" reconstructed …
Coccidia (Apicomplexa), Genetic Diversity, And Environmental Unpredictability Of Four Chromosomal Species Of The Subterranean Superspecies Spalax Ehrenbergi (Mole-Rat) In Israel, Lee Couch, Donald W. Duszynski, Eviatar Nevo
Coccidia (Apicomplexa), Genetic Diversity, And Environmental Unpredictability Of Four Chromosomal Species Of The Subterranean Superspecies Spalax Ehrenbergi (Mole-Rat) In Israel, Lee Couch, Donald W. Duszynski, Eviatar Nevo
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Forty-five mole-rats, representing 4 chromosomal species (2n = 52, 54, 58, 60) of the superspecies Spalax ehrenbergi. were collected from 12 localities in Israel in 4 distinct climatic regions. Feces were examined for coccidian oocysts and 41 (91 %) were infected; 26 (63%) had multiple infections of up to 5 coccidian species, 4 of which are described here as new species. Sporulated oocysts of Eimeria anzanensis n. sp. were ellipsoidal 18.3 x 12.5 μm (14-22 x 10-16) and had elongate-ovoidal sporocysts 7.3 x 4.9 μm (5-10 x 3-7); it occurred in 39 of 45 (87%) mole-rats, including all chromosomal …
Management Of University Biological Collections: A Framework For Policy And Practice, Patrick E. Mcguire, Lynn S. Kimsey, Scott Lyell Gardner
Management Of University Biological Collections: A Framework For Policy And Practice, Patrick E. Mcguire, Lynn S. Kimsey, Scott Lyell Gardner
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
A broad-based task force, chaired by Lynn Kimsey of the Department of Entomology and director of the Bohart Entomological Museum, was convened to review and assess the status of living and preserved biological collections held on the Davis campus of the University of California. The task force addressed three basic issues, forming subcommittees to 1) review the data gathered in a survey by the Genetic Resources Conservation Program of living and preserved collections and report its findings, 2) make recommendations for policy guidelines on a campus basis and an individual-collection basis, and s) propose a campus-wide administrative structure to address …
Three New Species Of Nematodes Associated With Endemic Grape (Vitis) In California, Luma Al-Banna, Scott Lyell Gardner
Three New Species Of Nematodes Associated With Endemic Grape (Vitis) In California, Luma Al-Banna, Scott Lyell Gardner
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Three new species of nematodes were encountered during a study of natural diversity of nematode associates of native species of Vitis L. in California. Achromadora walkeri sp. n. was found in rhizosoil of the native California grape Vitis californica Bentham and is characterized by the position of the amphid (within the vicinity of both dorsal and ventral teeth), a relatively long stoma, and the absence of a prerectum. The other 2 species were plant parasitic criconematids: Criconemoides featherensis sp. n., found in association with roots of V. californica, is characterized by possessing strongly retrose annuli posterior to the vulva, …
Charles Eric "Chuck" Dawson, 1922-1993 [In Memoriam], Robin M. Overstreet, Stuart G. Poss
Charles Eric "Chuck" Dawson, 1922-1993 [In Memoriam], Robin M. Overstreet, Stuart G. Poss
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Obituary of Charles Eric "Chuck" Dawson, 1922-1993, American marine ichthyologist.
Spiculopteragia Spiculoptera And S. Asymmetrica (Nematoda: Trichostrongyloidea) From Red Deer (Cervus Elaphus) In Texas, Lora G. Rickard, Eric P. Hoberg, Nancy M. Allen, Gary L. Zimmerman, Thomas M. Craig
Spiculopteragia Spiculoptera And S. Asymmetrica (Nematoda: Trichostrongyloidea) From Red Deer (Cervus Elaphus) In Texas, Lora G. Rickard, Eric P. Hoberg, Nancy M. Allen, Gary L. Zimmerman, Thomas M. Craig
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Specimens of Spiculopteragia spiculoptera and S. asymmetrica were recovered from the abomasa of five of ten naturally infected red deer (Cervus elaphus) in Texas (USA). Female specimens of Spiculopteragia were present in all five animals. Male specimens of S. spiculoptera and S. asymmetrica were present in one of five and three of five red deer, respectively. Spiculopteragia spiculoptera has not previously been recognized in the United States and the present report constitutes the first records of Spiculopteragia spp. in red deer from North America. It is likely that species of Spiculopteragia have been introduced to North America with …
Enteric Coccidia (Apicomplexa) In The Small Intestine Of The Northern Spotted Owl (Strix Occidentalis Caurina), Eric P. Hoberg, R. J. Cawthorn, O. R. Hedstrom
Enteric Coccidia (Apicomplexa) In The Small Intestine Of The Northern Spotted Owl (Strix Occidentalis Caurina), Eric P. Hoberg, R. J. Cawthorn, O. R. Hedstrom
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Sporulated oocysts (mean dimensions = 13.0 x 10.8 μm) and sporocysts (11.3 x 5.5 μm) of a coccidian resembling Frenkelia sp. or Sarcocystis sp. were present in the lamina propria of the small intestine of a naturally-infected northern spotted owl (Strix occidentalis caurina) collected near Medford, Oregon, USA. Dimensions of these oocysts and sporocysts appear to be considerably smaller than those from other sarcocystid species with avian definitive hosts. Additionally, numerous developmental stages and unsporulated oocysts (mean dimensions 22.8 x 17.8 μm) of a possible species of Isospora also were observed in the intestinal epithelium. This constitutes the …
Book Review Of Parascript: Parasites And The Language Of Evolution By D. R. Brooks And D. A. Mclennan, Smithsonian Institution Press, Washington, D.C., 1993., Eric P. Hoberg
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Review of Parascript: Parasites and the Language of Evolution by Daniel R. Brooks and Deborah A. McLennan, with bibliographical references.