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Articles 7861 - 7890 of 10522

Full-Text Articles in Zoology

On The Occurrence Of Niphargus Valachicus Dobreanu & Manolache, 1933 (Amphipoda, Gammaridae) In The Western Black Sea Region Of Turkey, Mehmet Akbulut, Murat Sezgi̇n, Mehmet Çulha, Levent Bat Jan 2001

On The Occurrence Of Niphargus Valachicus Dobreanu & Manolache, 1933 (Amphipoda, Gammaridae) In The Western Black Sea Region Of Turkey, Mehmet Akbulut, Murat Sezgi̇n, Mehmet Çulha, Levent Bat

Turkish Journal of Zoology

In this study, the characteristic features, distribution and ecology of the amphipod Niphargus valachicus E. Dobreanu & C. Manolache, 1933 sampled at Sırakaraağaçlar Stream of Sinop, flowing into the Black Sea, are given. Four taxa of Niphargus genus, freshwater Amphipoda fauna have been identified in Turkey. In addition to these, Niphargus valachicus is a new record for the Turkish freshwater fauna.


The Structure Of Baculum In Myotis Myotis And Myotis Blythi (Chiroptera: Vespertilionidae) From Turkey, İrfan Albayrak, Nursel Aşan Jan 2001

The Structure Of Baculum In Myotis Myotis And Myotis Blythi (Chiroptera: Vespertilionidae) From Turkey, İrfan Albayrak, Nursel Aşan

Turkish Journal of Zoology

A comparison was made of the shape and size of the bacula of 32 Myotis myotis (Borkhausen, 1797) and 26 Myotis blythi (Tomes, 1857) collected from Turkey. It was determined that baculum size does not distinguish the two species but baculum shape distinguishes them.


A Taxonomical Study On The Rotifera Fauna Of Devegeçidi Dam Lake (Diyarbakır-Turkey), Aysel Bekleyen Jan 2001

A Taxonomical Study On The Rotifera Fauna Of Devegeçidi Dam Lake (Diyarbakır-Turkey), Aysel Bekleyen

Turkish Journal of Zoology

In this study, Rotifera fauna of Devegeçidi dam lake was taxonomically investigated between April 1995 and December 1996. Thirty-four species belonging to the phylum Rotifera were identified, all of which were new for this lake. Three species (Brachionus caudatus, Lecane (M.) scutata and Testudinella truncata) were new records for Turkish inland waters.


New Rumen Ciliates From Turkish Domestic Cattle (Bos Taurus L.): 3. Entodinium Oektemae N. Sp. And Entodinium Imaii N. Sp. (Entodiniidae, Entodiniomorphida), Bayram Göçmen, Murat Tosunoğlu, Beri̇a Falakali Mutaf Jan 2001

New Rumen Ciliates From Turkish Domestic Cattle (Bos Taurus L.): 3. Entodinium Oektemae N. Sp. And Entodinium Imaii N. Sp. (Entodiniidae, Entodiniomorphida), Bayram Göçmen, Murat Tosunoğlu, Beri̇a Falakali Mutaf

Turkish Journal of Zoology

Certain entodiniid ciliates, somewhat different from those previously described (1), were observed the during examination of the rumen contents of 30 adult domestic cattle (Bos taurus L.) in the vicinity of Izmir. We propose that these new forms should be taxonomically named Entodinium oektemae n. sp. and Entodinium imaii n. sp. The frequencies Entodinium oektemae n. sp. and Entodinium imaii n. sp. were 6.67% 16.67% respectively. The main characteristics of these two species are described in detail and discussed in comparison with those of the previously reported ones.


A Study On Microgastrinae (Hymenoptera: Braconidae) Species In Gökçeada And Bozcaada, Fi̇li̇z İnanç, Ahmet Beyarslan Jan 2001

A Study On Microgastrinae (Hymenoptera: Braconidae) Species In Gökçeada And Bozcaada, Fi̇li̇z İnanç, Ahmet Beyarslan

Turkish Journal of Zoology

Samples were collected from the islands of Gökçeada and Bozcaada between 1996 and 1997. A total of 28 species belonging to 7 genera of Microgastrinae were determined. The species which are new records for the Turkish fauna are Apanteles brunnistigma Abdinbekova, Dolichogenidea cheles (Nixon), D. lacteicolor (Viereck), D. petrovae (Walley), D. subemarginata (Abdinbekova), Choeras parasitellae (Bouché), Glyptapanteles acasta (Nixon), Cotesia setebis (Nixon), and Microplitis docilis Nixon.


Use Of A Discriminant Function For The Morphometric And Meristic Separation Of Whiting Stocks, Merlangius Merlangus Euxinus, Along The Turkish Black Sea Coast, Ali̇ İşmen Jan 2001

Use Of A Discriminant Function For The Morphometric And Meristic Separation Of Whiting Stocks, Merlangius Merlangus Euxinus, Along The Turkish Black Sea Coast, Ali̇ İşmen

Turkish Journal of Zoology

Stock differentiation studies of whiting, Merlangius merlangus euxinus, from the Turkish Black Sea coast were carried out using morphometric and meristic characters and applying the generalised distance of Mahalanobis. Fifteen morphometric measurements, together with eleven meristic characters, were used in the analyses. Insufficient differences (P>0.01) in general phenotypic and genotypic characteristics implied the existence of a single unit stock. Samples taken in different periods showed lower similarity than those taken in the same periods.


A Study On The Bony Fishes Caught In The South Of The Sea Of Marmara By Bottom Trawling And Their Morphologies, Lütfi̇ye Soyal Eryilmaz Jan 2001

A Study On The Bony Fishes Caught In The South Of The Sea Of Marmara By Bottom Trawling And Their Morphologies, Lütfi̇ye Soyal Eryilmaz

Turkish Journal of Zoology

A total of 572 specimens of bony fish were obtained as a result of bottom trawling at 47 stations by R/V Arar of the University of Istanbul at the south of the Sea of Marmara, in 1992 and 1995. Upon analysis of these specimens, it was revealed that 49 bony fish species, including 5 subspecies, belonging to 30 families were found, and their diagnostic characteristics, the place and the depth where they were caught are given. The presence of Alosa pontica (Eichwald, 1838), known from the Black Sea, was determined in the Sea of Marmara in this study. The majority …


Nebraska Bird Review (December 2000) 68(4), Whole Issue Dec 2000

Nebraska Bird Review (December 2000) 68(4), Whole Issue

Nebraska Bird Review

Fall Field Report, August–November, 2000 ... 142

Species Accounts ... 144

First Record of an Arctic Tern for Nebraska ... 176

Mist Netting at Oliver State Recreation Area ... 177

Ecogeographic Aspects of Greater Prairie-Chicken Leks in Southeastern Nebraska ... 179

Index [for Volume 68: 1–4] ... 184


Ecogeographic Aspects Of Greater Prairie-Chicken Leks In Southeastern Nebraska, Paul A. Johnsgard Dec 2000

Ecogeographic Aspects Of Greater Prairie-Chicken Leks In Southeastern Nebraska, Paul A. Johnsgard

Nebraska Bird Review

An analysis of the distribution of 104 Greater Prairie-chicken leks in Pawnee and Johnson counties indicates that the birds favor using those mile-square sections having no more than two dwellings per section, ones that are located at least two miles from the nearest town, and at least a half-mile from the nearest lek. Relationships with the nearest water were not clear, but most leks were located at least a half-mile from it, perhaps reflecting a general avoidance of heavy cover during the display season.


Subscription And Organization Information [December 2000] Dec 2000

Subscription And Organization Information [December 2000]

Nebraska Bird Review

The Nebraska Bird Review is published quarterly by the Nebraska Ornithologists' Union, Inc., as its official journal, and is sent to members not in arrears of dues. Annual subscription rates (on a calendar-year basis only): $14.00 in the United States; $18.00 for all foreign countries, payable in advance. Single copies are $4.00 each, postpaid, in the United States, and $5.00 elsewhere. Send orders for back issues to Mary Prichard, NOU Librarian, University of Nebraska State Museum, Lincoln, NE 68588-0514.

Memberships in NOU (on a calendar year basis only): Active, $15.00; Sustaining, $25.00; Student, $10.00; Family Active, $20.00; Family Sustaining, $30.00; …


The Mayfly Newsletter, Peter M. Grant Dec 2000

The Mayfly Newsletter, Peter M. Grant

The Mayfly Newsletter

The Mayfly Newsletter is the official newsletter of the Permanent Committee of the International Conferences on Ephemeroptera.


Microsatellite Dna Diversity And Paternity Determination In A Captive Population Of Radiated Tortoises (Geochelone Radiata), Jennifer Leigh Mook Dec 2000

Microsatellite Dna Diversity And Paternity Determination In A Captive Population Of Radiated Tortoises (Geochelone Radiata), Jennifer Leigh Mook

All Theses

In the present study, five microsatellite loci are used to examine genetic diversity and determine genetic similarities among 66 radiated tortoises (Geochelone radiata) located in ten different zoos and institutions in the United States. These tortoises, representatives of one of the world's most endangered species, were originally collected in Madagascar and are being used as founders in the development of an organized breeding program, the radiated tortoise Species Survival Plan (SSP). Parentage analysis was also conducted for 13 juvenile tortoises of uncertain parentage from two institutions. Founder tortoises demonstrated high levels of genetic diversity at the five loci …


Observations On Small Mammals Recovered From Owl Pellets From Nebraska, Jeffrey J. Huebschman, Hugh H. Genoways, Patricia W. Freeman, Joseph A. Gubanyi Dec 2000

Observations On Small Mammals Recovered From Owl Pellets From Nebraska, Jeffrey J. Huebschman, Hugh H. Genoways, Patricia W. Freeman, Joseph A. Gubanyi

University of Nebraska State Museum: Mammalogy Papers

Mammalian remains from owl pellet material collected in 24 Nebraska counties were examined. A total of 1262 individual mammals was identified from all owl pellet material and included 19 identifiable species and 21 total genera. The most commonly consumed prey by owls across the state were Microtus (41% of identifiable prey material), followed by Peromyscus (18%), and Reithrodontomys (11%). Significant locality information for the northern grasshopper mouse (Onychomys leucogaster), the southern bog lemming (Synaptomys cooperi), and the meadow vole (Microtus pennsylvanicus) are reported.


Obituary: Elmer Clea Birney, 1940-2000, Hugh H. Genoways, Carleton J. Phillips, Jerry R. Choate, Robert S. Sikes, Kristin M. Kramer Nov 2000

Obituary: Elmer Clea Birney, 1940-2000, Hugh H. Genoways, Carleton J. Phillips, Jerry R. Choate, Robert S. Sikes, Kristin M. Kramer

University of Nebraska State Museum: Mammalogy Papers

On 11 June 2000, Dr. Elmer C. Birney unexpectedly passed away from cardiac arrest suffered while outside caring for his cattle at his home in Blaine, Minnesota. One of his former students, Robert Timm, probably best expressed the immediate reaction of his family and many friends: ‘‘He was too young and in too good of health to be gone so soon.’’ At the time of his death, Elmer was Professor in the Department of Ecology, Evolution and Behavior, the Curator of Mammals at the Bell Museum of Natural History, and Director of Graduate Studies of the program in Ecology, Evolution …


Small Mammal Communities In Riparian And Upland Habitats On The Upper Coastal Plain Of Virginia, A. Scott Bellows, Joseph C. Mitchell Oct 2000

Small Mammal Communities In Riparian And Upland Habitats On The Upper Coastal Plain Of Virginia, A. Scott Bellows, Joseph C. Mitchell

Virginia Journal of Science

We compared small mammal communities between riparian (stream corridor) and nearby upland habitats in a hardwood forest ecosystem on Fort A.P. Hill, Caroline County, Virginia. We used a combination of small-scale drift fence/pitfall trap arrays and snap traps to capture small mammals during April – October 1998, with an additional winter sample in January 1999. We captured seven small mammal species at 14 sites (7 pairs). Numbers of species were not significantly different between habitat types. Bray-Curtis polar ordinations showed that plant and small mammal community compositions were similar in upland sites and that these communities were most varied in …


Observations On Amphibians And Reptiles In Burned And Unburned Forests On The Upper Coastal Plain Of Virginia, Joseph C. Mitchell Oct 2000

Observations On Amphibians And Reptiles In Burned And Unburned Forests On The Upper Coastal Plain Of Virginia, Joseph C. Mitchell

Virginia Journal of Science

I evaluate the results of a short-term study on the effects of prescribed burning on terrestrial amphibians and reptiles on Fort A.P. Hill, Caroline County, Virginia. Six species of amphibians and reptiles were observed in unburned sites and eight species were observed in burned sites. More individual amphibians (46) were observed in unburned stands than in burned stands (15). Adults of two species (Bufo americanus, Plethodon cinereus) were found dead under logs in the still smoldering prescribed burn. The results of this study suggest that prescribed burning may have some negative effects on amphibians and reptiles. Because …


An Analysis Of Migratory Behavior Physiological Condition And Life History Strategy In The Salamanders Ambystoma Mabeei And A. Opacum In Southeastern Virginia, Michael W. Mccoy Oct 2000

An Analysis Of Migratory Behavior Physiological Condition And Life History Strategy In The Salamanders Ambystoma Mabeei And A. Opacum In Southeastern Virginia, Michael W. Mccoy

Biological Sciences Theses & Dissertations

Ambystoma mabeei is listed as threatened in Virginia due to its rarity and susceptibility to urbanization and poor forestry practices. The goal of this study was to identify factors that may affect the persistence of A. mabeei in Virginia by studying the life history and ecology of A. mabeei and its syntopic congener A. opacum. This information will contribute to the knowledge of life history variation within Ambystomatidae and will be critical for the development of a comprehensive management plan for A. mabeei. Population sizes of the two species and the proximate factors responsible for initiating breeding migrations were determined …


Subscription And Organization Information [September 2000] Sep 2000

Subscription And Organization Information [September 2000]

Nebraska Bird Review

The Nebraska Bird Review is published quarterly by the Nebraska Ornithologists' Union, Inc., as its official journal, and is sent to members not in arrears of dues. Annual subscription rates (on a calendar-year basis only): $14.00 in the United States; $18.00 for all foreign countries, payable in advance. Single copies are $4.00 each, postpaid, in the United States, and $5.00 elsewhere. Send orders for back issues to Mary Prichard, NOU Librarian, University of Nebraska State Museum, Lincoln, NE 68588-0514.

Memberships in NOU (on a calendar year basis only): Active, $15.00; Sustaining, $25.00; Student, $10.00; Family Active, $20.00; Family Sustaining, $30.00; …


Nebraska Bird Review (September 2000) 68(3), Whole Issue Sep 2000

Nebraska Bird Review (September 2000) 68(3), Whole Issue

Nebraska Bird Review

Summer Field Report ... 106

Species Accounts ... 107

Review of the Breeding Status of Pinyon Jay in Nebraska ... 126

Book Review [Birds of the Untamed West by James E. Ducey] ... 131

Historic Birds of Lincoln's Salt Basin Wetlands and Nine-Mile Prairie ... 132

Virginia's Warblers in Kimball County ... 137


Los Anfibios Del Monumento Natural Barro Colorado, Parque Nacional Soberania Y Areas Adyacentes, Rafael O. De Sá Sep 2000

Los Anfibios Del Monumento Natural Barro Colorado, Parque Nacional Soberania Y Areas Adyacentes, Rafael O. De Sá

Biology Faculty Publications

This book focuses on the batrachofauna of Barro Colorado Nature Monument. Soberania National Park and adjacent areas. It complements other recent publications on Neotropical amphibians such as those by Rodriguez and Duellman ( 1994) on Peru, Achaval and Olmos (1995) on Uruguay, and Meyer and Foster (1996) on Belize. The goal of these books is to reach a wider audience than the more technical batrachofaunal summaries-e.g., Frogs of Boracéia (Heyer 1990). Amphibians of Argentina (Cei 1985), and Frogs of the Genus Eleutherodactylus in Western Ecuador (Lynch and Duellman 1997). These geographically focused guides are especially useful to students, amateur biologists, …


Nestling Tree Swallow (Tachycineta Bicolor) Diets In An Upland Old Field In Western Michigan, Matthew E. Johnson, Michael P. Lombardo Jul 2000

Nestling Tree Swallow (Tachycineta Bicolor) Diets In An Upland Old Field In Western Michigan, Matthew E. Johnson, Michael P. Lombardo

Peer Reviewed Publications

We collected and identified 1852 prey items from 89 boluses delivered to 62 nestling tree swallows (Tachycineta bicolor) at 14 nests in an upland old field in western Michigan. We found that 90.8% of nestling diets was insects from the Orders Diptera, Homoptera, Hymenoptera and Coleoptera. We also found clam and snail shells in boluses. Over the most common brood sizes of 4-6 nestlings, brood size was inversely proportional to the number of items per bolus delivered to nestlings although mean dry and mean organic weight of boluses did not differ. Bolus composition was not influenced by weather …


Comparative Systematics Of Subterranean Amphipod Crustaceans In The Families Crangonyctidae And Bogidiellidae, Stefan Koenemann Jul 2000

Comparative Systematics Of Subterranean Amphipod Crustaceans In The Families Crangonyctidae And Bogidiellidae, Stefan Koenemann

Biological Sciences Theses & Dissertations

The research project presented in this doctoral dissertation deals with the systematics of two different taxonomic groups of subterranean amphipods (Crustacea). Therefore, rather than being a single project, this study is divided into several sub-projects. Altogether, the chapters for the sub-projects are composed of five publications. An introductory chapter and a summarizing discussion are added to provide a structural unit for the collection of papers and to compare the results of the individual projects.

The thesis investigates the systematics of the amphipod families Bogidiellidae Hertzog, 1936, and Crangonyctidae Bousfield, 1973. Based on descriptive taxonomy according to modern standards, revisions are …


An Ultrastructural Survey Of The Nuchal Glands Of Rhabdophis Tigrinus (Serpentes: Colubridae), Kathleen A. Roberts Jul 2000

An Ultrastructural Survey Of The Nuchal Glands Of Rhabdophis Tigrinus (Serpentes: Colubridae), Kathleen A. Roberts

Biological Sciences Theses & Dissertations

Rhabdophis tigrinus, an Asian natricine snake, possesses a series of integumentary glands located in the nuchal skin. Previous studies indicated that the nuchal glands are of mesodermal origin, contain cardiac steroids analogous to bufotoxins found in the parotoid glands of toads, which are included in the snake's diet. The nuchal glands are defensive in function. Preliminary histological studies revealed differences in quality of the gland tissue compared to previous studies, and difference in fixation techniques were suspected. Seven specimens of R. tigrinus were fixed by perfusion using a conservative fixation process standard for electron microscopy. The nuchal gland series …


The Effects Of Silviculture And Prescribed Burning On Herpetofauna In Florida Sand-Pine Scrub, Stig Ravdal Jun 2000

The Effects Of Silviculture And Prescribed Burning On Herpetofauna In Florida Sand-Pine Scrub, Stig Ravdal

USF Tampa Graduate Theses and Dissertations

Florida sand pine scrub is among the most endangered habitats in the United States and much of the remaining scrub is heavily influenced by management for timber production. In this study the effects of timber management practices on herpetofaunal community diversity and composition were investigated on experimentally manipulated plots near Orlando, Florida. Plots at three sites were either harvested, burned, or treated as a control (unmanipulated). Herpetofauna were trapped using pit-fall drift-fence trapping arrays. Animals were counted, measured, marked and released from March 1996 to June 1998. During this time period 1489 reptiles and amphibians were caught from 31 different …


Subscription And Organization Information [June 2000] Jun 2000

Subscription And Organization Information [June 2000]

Nebraska Bird Review

The Nebraska Bird Review is published quarterly by the Nebraska Ornithologists' Union, Inc., as its official journal, and is sent to members not in arrears of dues. Annual subscription rates (on a calendar-year basis only): $14.00 in the United States; $18.00 for all foreign countries, payable in advance. Single copies are $4.00 each, postpaid, in the United States, and $S.OO elsewhere. Send orders for back issues to Mary Prichard, NOU Librarian, University of Nebraska State Museum, Lincoln, NE 68588-0514. Memberships in NOU (on a calendar year basis only): Active, $15.00; Sustaining, $25.00; Student, $10.00; Family Active, $20.00; Family Sustaining, $30.00; …


Nebraska Bird Review (June 2000) 68(2), Whole Issue Jun 2000

Nebraska Bird Review (June 2000) 68(2), Whole Issue

Nebraska Bird Review

Review of the Breeding Status of Lewis's Woodpecker in Nebraska ... 50

Spring Field Report, March to May 2000 ... 55

Species Accounts ... 57

NOU Spring Count ... 81

Yellow-billed Loon at Lake McConaughy ... 88

A Century of Breeding Birds in Nebraska ... 89

Tufted Duck at Lake Ogallala: First Record for Nebraska ... 102


The Mayfly Newsletter, Peter M. Grant Jun 2000

The Mayfly Newsletter, Peter M. Grant

The Mayfly Newsletter

The Mayfly Newsletter is the official newsletter of the Permanent Committee of the International Conferences on Ephemeroptera.


Macroevolution In Microchiroptera: Recoupling Morphology And Ecology With Phylogeny, Patricia W. Freeman Jun 2000

Macroevolution In Microchiroptera: Recoupling Morphology And Ecology With Phylogeny, Patricia W. Freeman

University of Nebraska State Museum: Mammalogy Papers

No family of mammals has undergone a greater adaptive radiation than phyllostomid bats. Phylogeny combined with eco-morphological considerations of trophic structures can help understand this adaptive radiation and the evolution of Microchiroptera. Microchiropteran bats are overwhelmingly insectivorous, and constraints within the morphospace of insectivory have produced a dynamic equilibrium in bat morphologies that has persisted for 60 million years. The ability to eat fruit may be the key synapomorphy that allowed phyllostomids to escape insectivore morphospace and diversify. Although many phyllostomids have changed greatly, others that have maintained insectivory have changed little, which is equally remarkable.


Extralimital Records Of The Mexican Free-Tailed Bat (Tadarida Brasilensis Mexicana) In The Central United States And Their Biological Significance, Hugh H. Genoways, Patricia W. Freeman, Cary Grell May 2000

Extralimital Records Of The Mexican Free-Tailed Bat (Tadarida Brasilensis Mexicana) In The Central United States And Their Biological Significance, Hugh H. Genoways, Patricia W. Freeman, Cary Grell

School of Natural Resources: Faculty Publications

Two new records of Tadarida brasiliensis mexicana are reported from Nebraska. The literature records of this taxon from the central United States are summarized. In this region of North America, these bats occupy a “natal range” where the species carries on regular reproductive activities and the populations are relatively stable, including California, Arizona, New Mexico, Texas, and Oklahoma. To the north of the natal range of T. b. mexicana is a “pioneering zone” where, under favorable conditions, the species is capable of reproducing and conducting its normal activities. The pioneering zone of the Mexican free-tailed bat includes Barber and Comanche …


Shifting Distributional Patterns Of Mammals In Nebraska, Russell A. Benedict, Hugh H. Genoways, Patricia W. Freeman May 2000

Shifting Distributional Patterns Of Mammals In Nebraska, Russell A. Benedict, Hugh H. Genoways, Patricia W. Freeman

School of Natural Resources: Faculty Publications

New distributional records are presented for 20 species of mammals in Nebraska. The majority of these records appear to represent changes in geographic distribution rather than just better sampling in poorly known areas. One group of mammals, including the opossum, northern myotis, evening bat, red bat, woodchuck, white-footed mouse, and gray fox, is expanding westward, probably in response to increasing woodlands along river systems. Another group, including the meadow vole, masked shrew, and least weasel, is expanding southward, possibly in response to new prey species and changing microclimates. The eastern woodrat appears to be expanding northward in eastern Nebraska. The …