The American Midland Naturalist

Articles from Vol. 155, No. 1, January

A Field Study of Host Tree Associations of an Exotic Species, the Asiatic Oak Weevil [Cyrtepistomus Castaneus (Roelofs 1873), Coleoptera: Curculionidae]
ABSTRACT.-The Asiatic oak weevil [Cyrtepistomus castaneus (Roelofs 1873), Coleoptera: Curculionidae] was detected in New Jersey in 1933 and is now abundant throughout deciduous forests in the Eastern and Midwestern United States. Laboratory feeding trials...
Butterflies: Ecology and Evolution Taking Flight
Butterflies: Ecology and Evolution Taking Flight, Edited by Carol L. Boggs, Ward B. Watt and Paul R. Ehrlich, The University of Chicago Press: Chicago and London, 2003.Butterflies: Ecology and Evolution Taking Flight is a contribution from the Third...
Characteristics of Summer and Winter Roost Trees Used by Evening Bats (Nycticeius Humeralis) in Southwestern Missouri
ABSTRACT.-We radio-tracked 13 evening bats (Nycticeius humeralis) to 34 trees during the summer of 2003 and 10 evening bats to 29 trees during the winters of 2003 and 2004. We captured males in every month of the year and provide evidence suggesting...
Consumption of Caterpillars by Bats during an Outbreak of Western Spruce Budworm
ABSTRACT.-We investigated the diets of insectivorous bats (Chiroptera: Vespertilionidae) in forests with high densities of western spruce budworm (Choristoneura occidentalis, Lepidoptera: Tortricidae), in southern interior British Columbia, Canada. Caterpillars...
Delineating the Range of a Disjunct Population of Southern Flying Squirrels (Glaucomys Volans)
ABSTRACT.-The Southern flying squirrel (Glaucomys volans) is a species designated at risk in Canada where its range is restricted to parts of Ontario, Quebec and Nova Scotia. Before this study, its distribution in Nova Scotia was poorly documented, with...
Description of Spring Roost Trees Used by Female Indiana Bats (Myotis Sodalis) in the Lake Champlain Valley of Vermont and New York
ABSTRACT.-Extensive effort has been directed at the roosting ecology of the federally endangered Indiana bat (Myotis sodalis) during the maternity season; however, spring roosting ecology has received much less attention. In April 2002, radio transmitters...
Detection Probabilities and Site Occupancy Estimates for Amphibians at Okefenokee National Wildlife Refuge
ABSTRACT.-We conducted an amphibian inventory at Okefenokee National Wildlife Refuge from August 2000 to June 2002 as part of the U.S. Department of the Interior's national Amphibian Research and Monitoring Initiative. Nineteen species of amphibians...
Differential Estimates of Southern Flying Squirrel (Glaucomys Volans) Population Structure Based on Capture Method
ABSTRACT.-It is commonly assumed that population estimates derived from trapping small mammals are accurate and unbiased or that estimates derived from different capture methods are comparable. We captured southern flying squirrels (Glaucomys volans)...
Extrinsic Effects on Long-Term Population Trends of Virginia Opossums and Striped Skunks at a Large Spatial Scale
ABSTRACT.-Long-term data on wildlife populations are needed to elucidate the relative importance of extrinsic factors on population dynamics; however, such data are rare for most species such as medium-sized mammals. We present long-term population indices...
General Ecology of a Rural Population of Norway Rats (Rattus Norvegicus) Based on Intensive Live Trapping
ABSTRACT.-We used intensive live trapping over a 1-y period to investigate the general ecology of a population of Norway rats (Rattus norvegicus) inhabiting a barn in east-central Illinois. At the start of our study in April 1986, the population contained...
Habitat Associations, Life History and Diet of the Sabine Shiner Notropis Sabinae in an East Texas Drainage
ABSTRACT.-We examined aspects of the ecology of Notropis sabinae, the Sabine shiner, including habitat associations, population age structure, reproduction and diet in two east Texas streams from November 2001 through October 2002. Notropis sabinae exhibited...
Life History of Sialis (Megaloptera: Sialidae) in a Lentic and Lotic Ecosystem in Central Texas
ABSTRACT.-We studied the life history and feeding habits of two coexisting and closely related sister species of Sialis (Sialis itasca Ross and Sialis velata Ross) from a reservoir and river in central Texas. Measurement of larval head capsules and emergence...
Multi-Year Reproduction in Etheostoma Blennioides in South-Central Ohio
ABSTRACT.-From April 1999 through August 2001 Etheostoma blennioides was collected from the Hocking River in south-central Ohio. Ovaries of adult females were classified by developmental stage and appropriate-stage ovaries were used to analyze clutch...
Ontogenesis of Endangered Humpback Chub (Gila Cypha) in the Little Colorado River, Arizona
ABSTRACT.-The largest population of endangered humpback chub Gila cypha inhabits the Colorado River below Glen Canyon Dam and the lower 14 km of the Little Colorado River (LCR), Arizona. Currently, adults from both rivers spawn and their progenies grow...
Pollinator Limitation, Autogamy and Minimal Inbreeding Depression in Insect-Pollinated Plants on a Boreal Island
ABSTRACT.-We studied the pollination biology of 18 common insect-pollinated plant species on Kent Island, a boreal island in the Bay of Fundy, New Brunswick, Canada. Under natural conditions, fruit set was relatively high in most of the species studied...
Population Status and Habitat Selection of the Endangered Key Largo Woodrat
ABSTRACT.-Over the last two decades, declines in trap success, stick-nest density and population density estimates have fueled concerns that the federally endangered Key Largo woodrat (KLWR, Neotoma floridana smalli) population is declining. Information...
Population Status and Nesting Biology of the Rare Barrens Darter, Etheostoma Forbesi
ABSTRACT.-The Barrens darter Etheostoma (Catonotus) forbesi (Teleostei: Percidae) is a rare stream fish endemic to the upper Caney Fork River system in the Barrens Plateau region of middle Tennessee. We studied the darter's population characteristics...
Post-Breeding Dispersal of Burrowing Owls in an Extensive California Grassland
ABSTRACT.-Understanding patterns of dispersal is key to developing effective conservation plans, yet dispersal is poorly known for most species. We radio-tracked 15 adult burrowing owls (Athene cunicularia) from 13 nests within the Carrizo Plain National...
Reproductive Ecology and Food Habits of the Blacknose Shiner, Notropis Heterolepis, in Northern Illinois
ABSTRACT.-Although once broadly distributed in the region, the blacknose shiner, Notropis heterolepis, has declined or has already been extirpated throughout much of the Midwest and little is known about its life history. We describe characteristics...
Richness and Diversity of Oak Savanna in Northwestern Ohio: Proximity to Possible Sources of Propagules
ABSTRACT.-Prior to Euro-American settlement of the Oak Openings in northwestern Ohio, the proportion of oak savanna, woodland and forest in upland sites likely varied, with open canopies developing during dry periods of higher fire frequency and denser...
Seasonal Use and Selection of Caves by Plethodontid Salamanders in a Karst Area of Arkansas
ABSTRACT.-From December 1998 through May 2000, seasonal use and selection of caves by salamanders were documented in 93 small caves in Crawford County, Arkansas. Caves were surveyed seasonally between winter 1998-1999 and spring 2000, and the numbers...
Spatial Synchrony of Monarch Butterflies
ABSTRACT.-I examined spatial synchrony in populations of monarch butterflies (Danaus plexippus) during the summer breeding season across North America and while overwintering along the Pacific Coast. Spatial synchrony was observed in all analyses, but...
Summer Diel Activity and Movement Paths of Flathead Catfish (Pylodictis Olivaris) in Two Missouri Streams
ABSTRACT.-Within an ongoing round-the-clock radiotracking project, a subset of adult flathead catfish Pylodictis olivaris (n = 6) was continuously radio-tracked for 24 h to determine detailed diel movement path characteristics and activity in two Missouri...