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Modeling Studies Of Small Mammal Trapping Phenology, And Plant Succession In The Kaiparowits Region, Kane County, Utah, James A. Raines

Theses and Dissertations

This study makes use of simple statistical models which may be manipulated for projection of changes in the Kaiparowits Region of Southern Utah. A method of determining habitat preferences of small rodents from capture-recapture trapping data is proposed. It is suggested that some aspects of animal behavior regarding trapping may also be explained. Timing of flowering of Oryzopsis hymenoides and Hilaria jamesii as related to enviromental conditions was investigated, and models of the requisite conditions proposed. It is suggested that similar models may be used to describe the timing of other phenological events. Succession on disturbed sites is considered to …

Effect Of Supplemental Food On Population Estimates And Mortality Rates Of Desert Rodents In Utah, J. Steven Thiriot

Theses and Dissertations

The objective of this research is to assess the effects of various quantities of supplemental food (seed) on population estimates and mortality rates of desert rodents . The supplemental food is meant to stimulate natural vegetational productivity. If food availability significantly affects the population parameters methods of population estimators previously used may be in error. Hopefully this study will aid small mannnal research by designating whether, in part, population estimates and mortality rates are in error because of high vegetational productivity. The hypothesis of this study is that supplemental food in the natural environment decreases population estimates and mortality rates …

Influence Of A Dry Wash Habitat On Distribution And Movement Of Heteromyid Rodents, Jeffrey S. Green

Theses and Dissertations

Three heteromyid rodent species were studied in relation to a large dry wash in Millard County, Utah, during the summer, 1974. Data were gathered with three trapping grids and analyzed to determine if the dry wash influenced rodent movement and distribution patterns. Dipodomys ordii and Dipodomys microps were distributed non-randomly in the dry wash and adjacent habitat, but Perognathus Zongimembris seemed to be randomly distributed. Dipodomys ordii was significantly correlated with wash habitat, but D. microps was found most frequently in upland areas. Soil and vegetative differences and competition were possible causes for the observed distribution. The wash was observed …

Improved Techniques For Marking, Night-Viewing, And Aging White-Tailed Deer, Odocoileus Virginianus, Barnard Hodge Powell

Biological Sciences Theses & Dissertations

These studies were concerned with the development of methods to assist investigators of wildlife population research. Specifically they involve the description of (1) A device which enables an investigator to mark deer at medium range using specially modified darts fired by conventional tranquilizer rifles, (2) Construction of infrared viewers and light sources using surplus equipment and (3) Studies to develop a method of making permanent deer dental impressions under field conditions.

1976 Little International Agricultural Exposition Catalog, Little International Agricultural Exposition South Dakota State University

Little International "Little I" Agricultural Exposition Catalogs

No abstract provided.

Phytoseiid Predators Of Mite Pests In Utah Apple Orchards, Vichitra Mongkolprasith

Theses and Dissertations

Recent efforts to integrate certain Phytoseiid predators in pest (mite) management programs for apples have been somewhat successful and economical in many fruit growing areas. Convenient descriptions and reviews of the literature for species which have been collected from the state are provided to stimulate further work with Utah Phytoseiids. Seven species of Amblyseius and five Typhlodromus are described and notes provided concerning their respective geographic distributions and biologies.

Whole Issue Nebraska Bird Review (March 1976) 44(1)

Nebraska Bird Review

Table of Contents

1975 Treasurer's Report....................... 2

Gyrfalcon Taken in Nebraska .......................3

1975 Christmas Count....................... 3

1975 Nebraska Nesting Survey....................... 8

Vertebrate Remains in Great Horned Owl Pellets in Nebraska .......................12

Notes .......................16

Kentucky Warbler (Vol. 52, No. 1), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.

Cost Of Treating Wastewater From Poultry Processing Plants, The, W. Davis Folson, Robert L. Leonard

Storrs Agricultural Experiment Station

No abstract provided.

Birds A Special Interest Of New Acting Law Dean

Val Nolan Jr. (1976 Acting; 1980 Acting)

No abstract provided.

Columnaris Disease Of Fishes, S. F. Snieszko, G. L. Bullock

United States Fish and Wildlife Service: Publications

Columnaris disease is a chronic to acute infection that affects salmonids and many species of warmwater fishes. The first description of the disease was given by Davis (1922) who named the disease and bacterium from the columnar arrangement of cells as seen in wet mounts. The bacterium causing columnaris disease was first isolated by Ordal and Rucker (1944). They identified the organism as belonging to the group known as slime bacteria or myxobacteria; because it produced fruiting bodies and microcysts, they named it Chondrococcus columnaris. Garnjobst (1945), who was unable to find fruiting bodies, renamed it Cytophaga columnaris. …

Fisheries Report No 26 - Report On Lake Chandala With Recommendations Of Its Importance As A Fauna Reserve, Alan Tingay, Susan R. Tingay

Fisheries Research Reports

The hydrology, vegetation, fauna and land use of Lake Chandala (31°30 'S, 115°57'E) is described on the basis of field and literature surveys. The significance of the Lake as a Straw-necked Ibis (Thresktornts spinicollis) nesting rookery is emphasised and recommendations are made for its acquisition and future management.

Fisheries Report No 23 - The Management Of Nature Reserves In Western Australia, Andrew A. Burbidge, Trevor Evans

Fisheries Research Reports

The number and area of Nature Reserves in Western Australia has grown rapidly in recent times. At 80 June 1975 there were 491 reserves with an area of 5 103 037 hectares. By 31 December 1975, with the inclusion of reserves for the Conservation of Flora in the definition of a Nature Reserve, there were 900 reserves totalling 5 317 965 ha. With the implementation of the Environmental Protection Authority's recommendations based on the Conservation Through Reserves Committee's Report on Systems 4, 8, 9, 10, 11 and 12 the Nature Reserve System will jump to 985 reserves with an area …

Fisheries Report No 22 - The Western Rock Lobster Fishery 1971 - 1972, G. R. Morgan, E H. Barker

Fisheries Research Reports

The fishery for the western rock lobster* is one of the most important single fisheries in Australia and an important export earner for the State. The fishery is governed by a complex set of regulations which have been reviewed by Bowen (1971) and which are designed to limit the total effort to acceptable levels and to enforce a legal minimum size. It is thus important to constantly monitor the state of the fishery both to ensure that the effort is remaining within the accepted limits and that the regulations are adequately performing their function of maintaining reasonably stable catches. Inherent …

Report No 21 - A Resource Survey Of Woody Island, Archipelago Of The Recherche, J. Goodsell, A. Tingay, S. R. Tingay

Fisheries Research Reports

A resource survey of Woody Island was undertaken by the three authors from 26 October, 1975 to 8 November, 1975.

The island has some unusual faunal and floral features not yet recorded for the Archipelago. These are discussed.

Some problems in relation to the island's management are identified.

Fisheries Report No 25 - The Western Australian Amateur Fishery For Australian Herring (Arripis Georgianus) - Results Of The 1973 Creel Census, R C.J. Lenanton, N. G. Hall

Fisheries Research Reports

Historically, the Western Australian production of Australian herring (Arrtpts georgtanus) has fluctuated from year to year in response to changing market demand. Prior to 1968, the annual catch taken by professional fishermen was relatively stable, ranging from 200 000 kg (approx. 500 000 pounds) to 450 000 kg (approx. 1 000 000 pounds). From 1968, commercial production has risen to a peak of 1 187 440 kg (2 617 857 pounds) recorded in 1972/73 (Table I). An increase in demand for herring as bait for the rock lobster fishery is considered to be the major factor involved in this observed …

Investigations Of The Ichthyofauna Of Nicaraguan Lakes: Frontmatter

Investigations of the Ichthyofauna of Nicaraguan Lakes

Dedication
Commentary on this Compendium
Preface
Acknowledgments
Contributors
Contents

Chemical Analyses Of Some Crater Lakes In Relation To Adjacent Lake Nicaragua, George W. Barlow, Jeffrey R. Baylis, Dale Roberts

Investigations of the Ichthyofauna of Nicaraguan Lakes

In spite of the wide interest by naturalists in the Great Lakes of Nicaragua their limnology has received little study. Cole (1976) has reviewed the literature and contributed new data and interpretations. Our paper adds to his larger work by presenting chemical analyses of Lake Nicaragua and some of the small crater lakes near it. These smaller lakes have been neglected. The only information published about them is a fragmentary table in Riedel (1964), giving some comparative data on surface area, circumference, and depth.

The Origin Of The Lakes In The Nicaraguan Fault And Of The Middle American Isthmus In The Light Of Studies Of The Fish Fauna, Dietmar Riedel

Investigations of the Ichthyofauna of Nicaraguan Lakes

The geological hypothesis of a marine origin of the Nicaraguan depression and its lakes was until the fifties of the present century exclusively based upon the occurrence of marine species (shark, sawfish and tarpon) in Lake Nicaragua. A recent view, however, is that the fault was never connected with the sea and that the lakes were filled by rain only.
In view of the fact that there seems to be no agreement among geologists about the geological history of the Nicaraguan depression, an attempt is made to contribute to the discussion by evaluating the fish faunal elements of the fault. …

Digenea Of Fishes From Lake Nicaragua, Donald E. Watson

Investigations of the Ichthyofauna of Nicaraguan Lakes

This paper covers a collection of helminths made during the summer of 1963. The Monogenea and Cestoda of elasmobranchs are reported in a separate paper (Watson and Thorson, 1976). Most of the teleosts were obtained (many still alive) from the fish market in Granada and were caught in Lake Nicaragua. The others were taken by seine or hook and line from the lake, from Tepetate and from San Carlos.
There have been relatively few studies on Digenea from Central America and most of the work has been done on helminths of vertebrates other than fishes. Brenes (1961) catalogued the parasites …

Species Diversity And Distribution Of Fish In Lake Nicaragua, Kurt W. Koenig, Richard J. Beatty, Sergio Martinez C.

Investigations of the Ichthyofauna of Nicaraguan Lakes

The results of a preliminary study of the abundance, diversity and distribution of some of the fish species in Lake Nicaragua are presented here. These parameters have received little attention from investigators working on the lake.
A frequently used measure of species diversity is the Shannon-Weiner diversity index. It measures the degree of uncertainty of predicting the species identity of a randomly selected individual (Pielou, 1966). Lloyd and Ghelardi (1964) indicated that species diversity indices are influenced by both the species number, or "richness", and the species "evenness", or relative number of individuals of a species in a given habitat. …

En El Gran Lago, Medicina Y Cultura

Investigations of the Ichthyofauna of Nicaraguan Lakes

Conociendo la pepesca gaspar por experiencia previa quede muy sorprendido cuando, en Marzo del presente ano, vi dos 0 tres ejemplares nadando rapidamente en las cercanias de la isleta "Guanabana", en el Gran Lago. Acompafiado por mi esposa Marsha y por Michael Springer colectaba peces alrededor de esa isla con redes de mano. Al ver los ejemplares en el agua no pude menos que pensar inmediatamente en la pepesca gaspar, pero no me parecia factible encontrarla ya que la especie no habia sido antes registrada en el Gran Lago cuando, siendo comun en las regiones que habita, es una de …

Pigments Of A Color Polymorphism In A Cichlid Fish, Robert Webber, George W. Barlow, Alan H. Brush

Investigations of the Ichthyofauna of Nicaraguan Lakes

1. Cichlasoma citrinellum occurs as gray or gold morphs in lakes in Nicaragua. The gold morph is variable and individuals range from yellow to dark orange.
2. The pigments responsible for the carotenoid coloration are E-carotene and canthaxanthin. The gray morph contains a carotenoid component and also heavy melanin deposits.
3. The carotenoids are dietary in origin, but their distribution and intensity is presumably under genetic control.
4. The relation of color morphs to the ecological and selective forces which might produce them is discussed.

Parental Behavior And Some Histological Features Of Scales In Cichlasoma Citrinellum (Pisces, Cichlidae), David L. G. Noakes

Investigations of the Ichthyofauna of Nicaraguan Lakes

We have described elsewhere the ontogeny of behavior of young Cichlasoma citrinelium, and some aspects of the behavior of the parents during the corresponding period (Noakes and Barlow 1968, 1973a, 1973b). Adults are polymorphic in body color, the "normal" color being grey; the "gold" morphs are more or less xanthic and lack the species typical dark markings (Barlow 1973; and in preparation). The young have a characteristic behavior directed toward the parents in both the laboratory and the field. About 4 days after the young become free-swimming, they begin to feed from the body surfaces …

Movement Of Bull Sharks, Carcharhinus Leucas, Between Carribean Sea And Lake Nicaragua Demonstrated By Tagging, Thomas B. Thorson

Investigations of the Ichthyofauna of Nicaraguan Lakes

The shark that occurs in the fresh water of Lake Nicaragua and the Rio San Juan was first described (as Eulamia nicaraguensis) by Gill and Bransford (1877). These authors also first proposed the theory that the sharks, as well as the sawfish and tarpon that occur in the lake, were trapped there by late Pleistocene volcanic activity, which isolated a former bay of the Pacific and resulted in the formation of the present lake. The theory of a landlocked, distinct species, of Pacific origin, has en joyed wide popular acceptance and for many years was also accepted by professional …

The Behavior And Ecology Of Herotilapia Multispinosa (Teleostei, Cichlidae), Jeffrey R. Baylis

Investigations of the Ichthyofauna of Nicaraguan Lakes

Because of their complex social behavior and the ease with which they can be manipulated, cichlid fishes have long been of special interest to the ethologist. However, most of the research into cichlid behavior has been on Old World species. The social behavior of New World species is different and deserves more study. This paper will describe the ethology of one of the Central American cichlids, Herotilapia multispinosa.

Studio Istochimico Comparato Della Ghiandoia Digitiforme Rettale Di Selaci Marini E Di Acqua Dolce, Giuseppe Gerzeli, Gian Franco De Stefano

Investigations of the Ichthyofauna of Nicaraguan Lakes

La ghiandola reHale dei Selaci secerne notevoli quantita eli elettroliti: I'inelagine istomorfologica e istochimica puo consentire eli documentare I'('sistenza eli elispositivi strutturali e di potenzialita metaboliche collegabili con I'accumulo e la liberazione eli energia utilizzabile per un trasporto ionico attivo, fenomeno che appare alIa base deIl'attivita della ghiandola.

Aspetti Della Ghiandola Rettale E Della Regolazione Osmoticain Selaci Marini E D' Acqua Dolce, Giuseppe Gerzeli, Maria Victoria Gervaso, Gian Francis De Stefano

Investigations of the Ichthyofauna of Nicaraguan Lakes

In continuazione di ricerche giil pubblicate (GERZELI G., 1967 - 1st. Lombardo Rend. Sc., BIOI: 117 ; GERZELI F. e DE STEFANO G. F., 1968 - Cony. Soc. Ital. Anat.) l'indagine istomorfologica e istochimica sulla ghiandola rettale c stata estes a ad altre specie, integrandola con alcuni dati ehimici su costituenti plasmatici. Sinora sono state esaminate Ie seguenti specie: Scylliorhinus stellaris, Galeus melastomus, Torpedo marmorata, Raja asterias (del Mar Tirreno); Galeorhinus zyopterus (dell'Oceano Pacifico orientale) ; Carcharhinus leucas (del Mar dei Caraibi e del Lago di Nicaragua) ; Pristis perotteti (del Lago di Nicaragua) ; Potamotrygon brachiurus …

Helminths From Elasmobranchs In Central American Fresh Waters, Donald E. Watson, Thomas B. Thorson

Investigations of the Ichthyofauna of Nicaraguan Lakes

Five species of monogeneans and 14 species of cestodes are reported from two elasmobranch species in fresh waters of Guatemala, Nicaragua and Costa Rica. Monogeneans from the bull shark, Carcharhinus leucas (Muller and Henle, 1841), are: Dermophthirius maccallumi n. sp. (Microbothriidae); Heteronchocotyle leucas Hargis, 1955 and Erpocotyle carcharhini n. sp. (Hexabothriidae). Cestodes from the bull shark are: Phyllobothrium lactuca van Beneden, 1850, P. leuci n. sp., P. nicaraguensis n. sp., Anthobothrium cornucopia van Beneden, 1850, A. laciniatum Linton, 1890 (Phyllobothriidae): Platybothrium hypoprioni Potter, 1937, Phoreiobothrium triloculatum Linton, 1901 (Onchobothriidae); Cathetocephalus thatcheri Dailey and Overstreet, 1973 (Cathetocephalidae); Dasyrhynchus variouncinnatus (Linton, 1924) …

Limnology Of The Great Lakes Of Nicaragua, Gerald A. Cole

Investigations of the Ichthyofauna of Nicaraguan Lakes

For more than a century, the two largest bodies of water in Nicaragua, Lake Nicaragua and its smaller companion, Managua, have engaged naturalists from several disciplines. Perhaps their appeal has been as curiosities because of the occurrence of fish with marine affinities in the larger lake, especially a dangerous shark. The charm has been in Nicaragua or Cocibolca, rather than Managua, properly called Xolotlán. Even though the latter is saltier, it has no elasmobranchs or tarpons.
The lakes, and specifically the larger, cover the greatest expanse of any body of water between Lake Titicaca, Bolivia-Peru, and the Laurentian …