Entomology Commons^™

Mayfly Cholinesterase: Solubilization And Partial Purification, Burton C. Lidgerding, Donald J. Kraft

Journal of the Minnesota Academy of Science

A method hos been developed for the solubilization of cholinesterase from whole mayflies (Hexagenia bilineata, Soy). Solubilization is enhanced through the use of: (1) protamine sulfate, (2) sephadex, (3) sodium taurocholate, and (4) ammonium sulfate-sodium bicarbonate treatments. Partial purification of the enzyme is also reported. Fractions representing a final activity of 246 units and a purification factor of 17.79 are presented.

Effect Of Substrate Types On Aquatic Insect Distribution, Henry L. Bell

Journal of the Minnesota Academy of Science

The effect of substrate types on aquatic insect distribution in the Lester River, St. Louis County, Minnesota, was analyzed through regular measurement of the standing crop. It was found that most aquatic insects preferred a rubble substrate, followed by coarse gravel, bedrock, and coarse sand.

Distribution And Emergence Patterns Of Mayflies Ephemera Simulans (Ephemeroptera: Ephemeridae), Calvin R. Fremling, Gerrit P. Kloek

Journal of the Minnesota Academy of Science

Analyses of collections made during the years 1961-1964 reveal that Ephemera simulans is widely distributed in the lake regions of Minnesota and Wisconsin. The period of maximum emergence in central Minnesota and northern Wisconsin occurs during the last three weeks in June, the peak in extreme northern Minnesota about two weeks later.

Spring Dispersal Of Some Leafhoppers And Aphids, A. G. Peterson, J. D. Bates, R. S. Saini

Journal of the Minnesota Academy of Science

Two species of leafhoppers and four species of cereal aphids appear to be transported to Minnesota each spring on strong winds from the south or southwest. The aster leafhopper, Macrosteles fascifrons (Stal); the English grain aphid, Macrosiphum avenae (Fabr.); the apple grain aphid, Rhopalosiphum fitchii (Sand.); and the greenbug, Schizaphis graminum (Rond.), usually arrive in Minnesota during late April or early May. Weather conditions favorable for northward movement of these insects consist of a high pressure area over the eastern states, a low pressure area over the western plains, and the resulting strong, persistent, south wind which is often called …

The Summer Standing Crop, Growth And Distribution Of Chironomus Plumosus, In Lake Itasca, Minnesota, James C. Underhill, Gerald A. Cole

Journal of the Minnesota Academy of Science

During the period 15 June to 3 September 1965, 626 Ekman dredge hauls were made in Lake Itasca, Minnesota. The numbers and weights of Chironomus plumosus L. at 6 m, 7 m, 8 m, Siefert's Hole (9.5 - l 0.4 m), and Peace Pipe Vista (11.5 - 13.7 m) depression were determined. In addition, the numbers and weights of several other benthic dipteran larvae, Cryptochironomus, Palpomyia, and Procladius, normal associates of C. plumosus, were determined. A loss of 98,407 larvae/ha/day occurred in the 6-9 m stratum during the 12 weeks. There was a decrease in numbers of larvae of 79.3% …

Distribution And Habitat Preference Of Minnesota Dragonfly Species (Odonata, Anisoptera) I., Robert Evans Carlson, Myron A. Anderson, Charles L. Hamrum

Journal of the Minnesota Academy of Science

The Anisoptera species found in Minnesota collections are listed. Eighteen of the 63 species are reported for the first time as occurring in Minnesota. The geographical distribution of the 63 species is presented. Factors affecting geographical distribution are discussed . The seasonal distribution of common species and genera with restricted flying times is discussed.

Myrmecological Techniques, Arthur W. Glass, Charles L. Hamrum

Journal of the Minnesota Academy of Science

An ant colony collection-maintenance unit is described and various adaptations of it are described and illustrated. These adaptations may be used to study food preference, interspecific fighting, or predation. Methods of feeding and watering colonies and examination of individual ants are also included as well as maze constructions and colony-recognition devices that may be attached. Only techniques for observation of ant behavior are presented; experimental results are omitted.

Identification And Distribution Of Minnesota Leucorrhinia Species (Odonata, Libellulidae), Charles L. Hamrun, Robert Evans Carlson, Arthur W. Glass

Journal of the Minnesota Academy of Science

Minnesota Leucorrhinia species are contrasted with one another through the use of male and female characters . Included in the key lo species are two species (frigida and glacialis) not previously reported from Minnesota. All North American species are discussed.

A Review Of Characters Used In The Identification Of North Central States' Sitona Germar (Coleoptera, Curculionidae)., Valerie J. Fridrich

Journal of the Minnesota Academy of Science

Lack of good literature concerning taxonomy of the genus Sitona has prompted this study. Specific characters, such as, color, prothorax shape, frontal groove, punctures, genitalia, setae, eyes, length, elytral shape, and scales are discussed. A key for the five species of the North Centro I Stales is presented, including notes on each species.

Northerly Movement Of Corn Borer Moths In Southern Minnesota, H. C. Chiang, Vern Sisson, M. A. Ewert

Journal of the Minnesota Academy of Science

Seventeen light traps were installed in 6 counties in southwest Minnesota in 1962 and 1963 and the nightly catches of moths of the European corn borer were recorded. The results show that moth catch was higher during nights with south winds and the nights immediately following such nights. This relation occurred over a large area and during the entire flight period. Moth popu1'otion in southern Minnesota was increased when south winds prevailed during the Right period. The trapping and recording were carried out by 15 FFA members, l 4-H member, and l adult farmer. The project demonstrates that these young …

A Preliminary Study Of Minnesota Rose Gall Insects, Edmund Olson

Journal of the Minnesota Academy of Science

A study of ten species of gall-makers found living in Minnesota roses. All but one belong to the Cynipid genus, Diplolepis. The galls and gall-makers are briefly described. Parasites and inquilines raised from the galls are listed and discussed.

Identification And Distribution Of Sympetrum In Minnesota (Libellulidae, Odonata), Lee A. Miller, Charles L. Hamrum, Myron A. Anderson

Journal of the Minnesota Academy of Science

Sympetrum species may be seen in flight throughout Minnesota in late summer and autumn. Large numbers may be seen flying along the edges of lakes and ponds or foraging in meadows and marsh grass. The general body color varies from yellow-brown in teneral specimens to bright red in older individuals. Only danae never shows red. Unfortunately the red fades to dull brown in dried specimens. The wings may be hyaline or marked with yellow bands. These dragonflies are easily collected with a net as the flight is not particularly swift and they rest frequently.

The literature indicates this large genus …

Three Southeastern Minnesota Lakes As Possible Habitat For Hexagenia Mayflies, James R. Erickson

Journal of the Minnesota Academy of Science

Three small lakes near Winona, Minnesota, were sampled to determine if they supported populations of Hexagenia mayfly nymphs. Hexagenia nymphs were rare in Lake Winona and the Gravel Pit, and none was found in Crooked Slough. A low dissolved oxygen content at the mud-water interface is probably the limiting factor in Lake Winona and Crooked Slough. The limiting factor in the Gravel Pit is probably the bottom type.

Minnesota Mallota And Allied Genera (Diptera, Syrphidae), Charles L. Hamrum, Joanna L. Carlson, Richard K. Lindquist

Journal of the Minnesota Academy of Science

The generic characteristics of Mallota are compared with related Eristaline genera. Life history notes and an identification key are given for Minnesota Mallota species.

Apparent Effects Of Refrigeration On The Rate Of Embryonic Development Of Mayfly (Hexagenia Limbata) Eggs, Roger Flattum

Journal of the Minnesota Academy of Science

Hunt (19 5 3) states that temperature is an important factor influencing the rate of embryonic development of Hexagenia (mayfly) eggs. Pasvogel (1962) has reported that 46 days is the time limit Hexagenia eggs can remain dormant at temperatures slightly above freezing. It was the object of this investigation to continue this line of research and to determine the effects of temperature on the embryonic development of Hexagenia limbata eggs.

Technique For Demonstrating The Chromosomes In The Salivary Glands Of The Fruit Fly, Drosophila Melanogaster, M. M. Keith

Journal of the Minnesota Academy of Science

No abstract provided.

The Mechanism Of Temperature Induced Reduction Of Tumor Frequency In A Tumorous Strain Of Drosophila Melanogaster, R. A. Kroman

Journal of the Minnesota Academy of Science

No abstract provided.

A Tumorous Head Mutation In Drosophila Melanogaster, Roy P. Thelander

Journal of the Minnesota Academy of Science

No abstract provided.

Some New Facts In The Biology Of The Box Elder Bug, Milton Tinker

Journal of the Minnesota Academy of Science

No abstract provided.

The Biology Of The Goldenrod Gall-Fly, Eurosta Solidaginis (Fitch), Blanchard O. Krogstad

Journal of the Minnesota Academy of Science

No abstract provided.

A Preliminary Survey Of Insects Visiting Goldenrod In Itasca Park, Alice Endicott

Journal of the Minnesota Academy of Science

No abstract provided.

Nutrition Of The Wax Moth Larvae. Vitamin Requirement. I. Requirement For Vitamin B, Mykola H. Haydak

Journal of the Minnesota Academy of Science

No abstract provided.

Notes On Minnesota Ticks, William A. Riley

Journal of the Minnesota Academy of Science

No abstract provided.

The Importance Of Local Mosquito Surveys In Minnesota, William A. Riley

Journal of the Minnesota Academy of Science

No abstract provided.

On The Reproduction Of Lost Or Mutilated Limbs Of Insects, O. W. Oestlund

Journal of the Minnesota Academy of Science

No abstract provided.

Entomology, R. J. Mendenhall

Journal of the Minnesota Academy of Science

The manuscript of the inaugural address of President Winchell, delivered January, 1879, was unfortunately destroyed by fire, along with the manuscript and printed pages of the whole of the bulletin for 1878. After some delay, the most of the other manuscripts have been reproduced, and are here combined with the bulletin for 1879. The paper of Mr. Mendenhall, read at the February meeting, was consumed with other manuscripts, in the fire that destroyed Brackett's Block. A few extracts from it appeared in the Minneapolis Tribune of February 5th, 1879, and to that the Bulletin is indebted for the following.

Notes On Entomology, R. J. Mendenhall

Journal of the Minnesota Academy of Science

No abstract provided.