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The Life Cycle Of Hydroperla Crosbyi (Plecoptera: Perlodidae), Reed Y. Oberndorfer, Kenneth W. Stewart
The Life Cycle Of Hydroperla Crosbyi (Plecoptera: Perlodidae), Reed Y. Oberndorfer, Kenneth W. Stewart
Great Basin Naturalist
Hydroperla crosbyi in Texas exhibited a univoltine, fast life cycle over the three-year study period. Adults emerged in February–March when mean daily stream temperature reached ca. 15 C. Reared females in the lab deposited up to three egg masses. Mean fecundity of dissected females was 787 eggs/female. Oviposition in the field was observed and described.
Eggs were triangular in cross section, brown, and measured 400 µm × 535 µm. They underwent an ca. seven-month diapause until mean daily stream temperature decreased to 18 C. Eyespots appeared, and hatching followed in two to three weeks. First instar nymphs were measured and …
Index [And Table Of Contents] To Volume 36
Index [And Table Of Contents] To Volume 36
Great Basin Naturalist
No abstract provided.
A Taxonomic And Ecologic Study Of The Riverbottom Forest On St. Mary River, Lee Creek, And Belly River In Southwestern Alberta, Canada, Robert K. Shaw
A Taxonomic And Ecologic Study Of The Riverbottom Forest On St. Mary River, Lee Creek, And Belly River In Southwestern Alberta, Canada, Robert K. Shaw
Great Basin Naturalist
The riverbottom forest community of St. Mary River, Lee Creek, and Belly River in southwestern Alberta, Canada, is a unique ecological entity characterized by poplar species having their major Alberta distribution along these streams. Stands in the community are dominated by three tree species, six shrub species, and nine herb species. Establishment of the community is dependent on climate and substrate; destruction is the result of progressive lateral stream-flow erosion. Soils are sandy loams above gravel, with pH values of 7.7 to 8.0 and soluble salt concentrations of 176 to 458 parts per million. Trees in mature stands averaged 23.0 …
Arachnids As Ecological Indicators, Dorald M. Allred
Arachnids As Ecological Indicators, Dorald M. Allred
Great Basin Naturalist
In three ecological studies in the southern parts of Nevada, Idaho, and Utah, spiders of 138 species, scorpions of 10, solpugids of 29, and phalangids of 2 species were obtained by pitfall capture. Significant differences in species occurrence were noted between the three geographic and ecologically distinct areas. Within each geographic area, arachnids differed in species occurrence and abundance in different plant communities. Only three species of spiders and four species of scorpions were common to all three geographic areas.
Growth And Development Of The Western Harvest Mouse, Reithrodontomys Megalotis Megalotis, Gary H. Richins, H. Duane Smith, Clive D. Jorgensen
Growth And Development Of The Western Harvest Mouse, Reithrodontomys Megalotis Megalotis, Gary H. Richins, H. Duane Smith, Clive D. Jorgensen
Great Basin Naturalist
Growth rates, gestation period, litter size, reproductive age, sex ratios, and development were studied on 198 litters of Reithrodontomys megalotis megalotis (Baird). Growth was characterized by several standard skull and body measurements and was partitioned into four phases of 1–3, 4–12, 13–22, and 23–70 days. Growth was best described by measurements of tail length, ear length, and dried eye-lens weight. Reproductive activity began as early as 38 days for females and 59 days for males. The gestation period was 22 days, and the mean litter size was 3.83 (range 1–7). Sex ratio was 53.49 percent males to 46.51 percent females. …
Studies On The Tolerance Of Aquatic Insects To Low Oxygen Concentrations, Arden R. Gaufin, Robert Clubb, Robert Newell
Studies On The Tolerance Of Aquatic Insects To Low Oxygen Concentrations, Arden R. Gaufin, Robert Clubb, Robert Newell
Great Basin Naturalist
Acute, short-term (96-hour) tests were conducted to determine the relative sensitivity of low oxygen concentrations to 20 species of aquatic insects. In addition, the longer-term effects of low oxygen levels on the survival, molting, growth, and emergence of 21 species were studied. This paper encompasses work conducted at the University of Montana Biological Station from 1968 to 1970 and at the University of Utah from 1966 to 1972.
An evaluation of the average minimum dissolved-oxygen requirements of the different groups of aquatic insects tested indicates that the mayflies are the most sensitive, that the stoneflies are next, and that the …
Scorpions Of The National Reactor Testing Station, Idaho, Dorald M. Allred
Scorpions Of The National Reactor Testing Station, Idaho, Dorald M. Allred
Great Basin Naturalist
During ecological studies in 1966 and 1967, 282 scorpions of Paruroctonus boreus (Girard) were collected in can pit-traps in 12 plant communities. The ideal habitat was in vegetated areas where the total ground cover was more than 85 percent, of which at least 60 percent was broad-leaf shrubs and 5 percent grasses. Populations of ants and spiders were highest where scorpions were most abundant. Scorpions were most active above ground during August, with about half as much activity during July. None were found prior to May or after September.
Local Distribution And Interspecies Interactions In Microtines, Grand Teton National Park, Wyoming, Tim W. Clark
Local Distribution And Interspecies Interactions In Microtines, Grand Teton National Park, Wyoming, Tim W. Clark
Great Basin Naturalist
Some ecological relationships and interspecies interactions (i.e., habitat, foods, and reproduction) between Microtus pennsylvanicus pullatus, M. montanus nanus, M. longicaudus mordex, and Clethrionomys gapperi galei were investigated in Grand Teton National Park, Wyoming. Trapping was conducted from June–July, 1968 and May–July, 1969 yielding 110 M.p.p., 171 M.m.n., 17 M.l.n. and 41 C.g.g. Six plant communities were defined structurally; all communities contained voles but varied considerably in numbers of species and individuals. Analyses of stomach contents showed similar diets. Embryo counts indicated that there was no significant interspecies differences in litter sizes. Females of all species were pregnant in about equal …
Additional Records Of Mutillid Wasps From The Nevada Test Site, Dorald M. Allred
Additional Records Of Mutillid Wasps From The Nevada Test Site, Dorald M. Allred
Great Basin Naturalist
No abstract provided.
Records Of Coreidae (Hemiptera) From The Nevada Test Site, Dorald M. Allred
Records Of Coreidae (Hemiptera) From The Nevada Test Site, Dorald M. Allred
Great Basin Naturalist
No abstract provided.
Two New Species Of Gymnodamaeus From Colorado (Acarina: Cryptostigmata, Gymnodamaeidae), Tyler A. Woolley, Harold G. Higgins
Two New Species Of Gymnodamaeus From Colorado (Acarina: Cryptostigmata, Gymnodamaeidae), Tyler A. Woolley, Harold G. Higgins
Great Basin Naturalist
Gymnodamaeus plokosus and G. leurolomasus, n. spp., are described from soil at an ecological study site near Hayden, Colorado. Their relationship to allied species is discussed.
Neartic Desert Decticidae (Orthoptera). Part Ii. A New Genus And Species From Arizona, Ernest R. Tinkham
Neartic Desert Decticidae (Orthoptera). Part Ii. A New Genus And Species From Arizona, Ernest R. Tinkham
Great Basin Naturalist
Platyoplus, n. gen., is erected for P. gilaensis, n. sp., from the Gila Mountains, Yuma Co., Arizona. The method of preservation for these large, soft-bodied insects is described.
Aquatic Phycomycetes Of Lily Lake, Utah, Hugh M. Rooney, Kent H. Mcknight
Aquatic Phycomycetes Of Lily Lake, Utah, Hugh M. Rooney, Kent H. Mcknight
Great Basin Naturalist
During the ice-free period from May to November on two successive summers water molds were collected on 14 different substrata placed in Lily Lake, a subalpine bog lake in the Uinta Mountains of Utah. Twenty-five collections yielded thirty-four species in 20 genera, 11 families, and 6 orders of aquatic Phycomycetes. Correlation of frequency presence of the species reported with physical and chemical characteristics of the lake showed that the number of species collected increased with an increase in water temperature and a decrease in oxygen content during June to August, reaching a peak in late July. Rhipidium americanum Thaxter (100 …
Ecological Notes On Recently Described Myriapods From Nevada, Dorald M. Allred
Ecological Notes On Recently Described Myriapods From Nevada, Dorald M. Allred
Great Basin Naturalist
No abstract provided.
A Comprehensive Index To The Great Basin Naturalist, Volumes 1–30 Inclusive, 1939–1970, Vasco M. Tanner
A Comprehensive Index To The Great Basin Naturalist, Volumes 1–30 Inclusive, 1939–1970, Vasco M. Tanner
Great Basin Naturalist
No abstract provided.
Vasco M. Tanner, C. Lynn Hayward
Leptotyphlops Humilis In Death Valley, California, Fenton R. Kay
Leptotyphlops Humilis In Death Valley, California, Fenton R. Kay
Great Basin Naturalist
No abstract provided.
Bees Of The Nevada Test Site, Donald M. Allred
Bees Of The Nevada Test Site, Donald M. Allred
Great Basin Naturalist
No abstract provided.
Index [And Table Of Contents] To Volume 28
Index [And Table Of Contents] To Volume 28
Great Basin Naturalist
No abstract provided.
Faunistic Inventory—Byu Ecological Studies At The Nevada Test Site, D Elden Beck, Dorald M. Allred
Faunistic Inventory—Byu Ecological Studies At The Nevada Test Site, D Elden Beck, Dorald M. Allred
Great Basin Naturalist
No abstract provided.
D Elden Beck (1906–1967), Vasco M. Tanner
D Elden Beck (1906–1967), Vasco M. Tanner
Great Basin Naturalist
No abstract provided.
Spiders Of The Nevada Test Site, Dorald M. Allred, D Elden Beck
Spiders Of The Nevada Test Site, Dorald M. Allred, D Elden Beck
Great Basin Naturalist
No abstract provided.
References On Nevada Test Site Ecological Research, Vincent Schultz
References On Nevada Test Site Ecological Research, Vincent Schultz
Great Basin Naturalist
No abstract provided.
Tingidae, Neididae (Berytidae) And Pentatomidae Of The Nevada Test Site, D Elden Beck, Dorald M. Allred
Tingidae, Neididae (Berytidae) And Pentatomidae Of The Nevada Test Site, D Elden Beck, Dorald M. Allred
Great Basin Naturalist
No abstract provided.
Unusual Records Of Utah Mites, Dorald M. Allred
Unusual Records Of Utah Mites, Dorald M. Allred
Great Basin Naturalist
No abstract provided.
Angus Munn Woodbury, 1886–1964, Vasco M. Tanner
Angus Munn Woodbury, 1886–1964, Vasco M. Tanner
Great Basin Naturalist
No abstract provided.
Two Isopods Of The Nevada Test Site, Dorald M. Allred, Stanley Mulaik
Two Isopods Of The Nevada Test Site, Dorald M. Allred, Stanley Mulaik
Great Basin Naturalist
No abstract provided.
Tularemia And Deer Flies In The Environs Of Utah Lake, Utah, Kaye B. Cox
Tularemia And Deer Flies In The Environs Of Utah Lake, Utah, Kaye B. Cox
Great Basin Naturalist
No abstract provided.