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School Completion In Pakistan: Analysis Of Censoring And Selection Bias, Jessica Holmes

Discussion Papers

No abstract provided.

2000 Jackrabbit Basketball, South Dakota State University

Jackrabbit Basketball Media Guides (1998-2014)

This is the 1999-2000 South Dakota State University Jackrabbit Basketball Media Guide.

Nest-Site Selection By Female Black-Capped Chickadees: Settlement Based On Conspecific Attraction?, Scott M. Ramsay, Ken A. Otter, Laurene M. Ratcliffe

Biology Faculty Publications

Female Black-capped Chickadees (Poecile atricapillus) solicit extrapair copulations (EPCs) from neighboring high-ranking males, and these EPCs result in extrapair young. Females might choose to locate their nests near the territory boundaries of attractive males to facilitate access to EPCs. Other hypotheses might also explain choice of nest site, namely (1) habitat characteristics, (2) prey abundance, and (3) previous experience. We tested these four hypotheses in 1996 and 1997. Out of 27 habitat characteristics measured, we found only one that was significantly different between nests and control sites in both years. The abundance of large trees was lower at …

Koiné 1999, Connecticut College

Connecticut College Yearbooks

This is a digitized version of Koiné, the student yearbook of Connecticut College. It has been divided into sections for ease of access.

To download a copy of the entire book, use the "full-text" link - these files are large and may take some time.

"What's Really Going On?" A Study Of Lawyer And Scientist Inter-Disciplinary Discourse, Robert J. Condlin

Faculty Scholarship

No abstract provided.

Dordt College 1999-2000 Catalog, Dordt College. Registrar's Office

Academic Catalogs

Academic Catalog for 1999-00

The Inhibition Of The Genotoxic Effects Ofenvironmental Pollutants And The Aging Processesby Plant Antimutagens, Urkhan Alekperov, Rena Gulieva, Ramiz Alekperov

Turkish Journal of Biology

We investigated the effects of bioactive compounds obtained from fruits of Diospyros kaki L., Cydonia oblonga Mill. and roots of Glycyrrhiza glabra L., as well as their action in a complex mixture on the mutability in marrow cell chromosomes induced by genotoxicants (X-rays, N-Methyl-N-Nitrosurea, Cyclophosphamide) and aging. The plant products tested separately and in a complex mixture showed an ability to decrease the frequency of induced mutations in experimental animals. Antimutagenic properties of the complex mixture turned out to be considerably higher than its components separately. More antimutagenic activity of the mixture was revealed when mutagenesis was the result of …

Variation In The Nucleolus Organizer Regions (Nors)In Two Mole Rat Species ( Spalax Leucodon Andspalax Ehrenbergi), Mehmet Doğan Gülkaç, İlknur Şendoğdu Küçükdumlu

Turkish Journal of Biology

In this investigation, patterns of variation in the nucleolus organizer regions (NORs) in the chromosomes of Spalax leucodon and Spalax ehrenbergi were studied. The chromosomal location of the Ag-NORs was determined in two mole rat species. S. leucodon has 3 pairs of nucleolar chromosomes, but S. ehrenbergi has only 2 pairs of nucleolar chromosomes in their whole chromosome sets. In both mole rat species, the chromosomal locations of Ag-NORs were determined to be on the terminal of the short arms of the subtelocentrics. The possibilty of Robertsonian translocation and the loss of paracentric NORs in S. ehrenbergi were discussed from …

Effects Of Fagonia Cretica L. Constituents On Variousendocrinological Parameters In Rabbits, M. Asif Saeed, Zaheer-Ul-Din Khan, A. W. Sabir

Turkish Journal of Biology

The effects of powdered Fagonia cretica plant and its two major triterpenoid saponins (saponin-I and saponin-II) on various blood endocrinological parameters. Prolactin namely, serum pro-lactin, serum thyrotropin, serum thyroxine and serum cortisol of normal male rabbits were investi-gated. Two major triterpenoid compounds, saponin-I and saponin-II, were isolated from its ethanolic extract by repeated chromatography on silica gel, sephadex LH-20 and on biogel P-2. These com-pounds were identified after comparing their values of 1 H NMR and 13 C NMR chemical shifts with pre-viously reported values of similar compounds. Radio-immunological assay was used for the estimation of blood hormones of crude …

The Effects Of Dietary Vitamin E On Sera Lipids Andlipid Peroxida Peroxidation In Diabetic Rats, Sait Çeli̇k, Ökkeş Yilmaz

Turkish Journal of Biology

The aim of the present study was to determine the effects of dietary vitamin E on some biochemical sera parameters in diabetic rats. Thirty wistar rats were used in the experiments. They were randomly divided into three groups, each consisting of ten rats. The first group was the control, the second was diabetic, and the third was diabetic but fed vitamin E. At the end of 12 weeks, the levels of insulin, HDL and vitamin E in the sera were lower but the levels of MDA, glucose, fosfolipidis, cholesterols, triglycerides, free fatty acids, LDL and VLDL were in the second …

Copper, Zinc, Lead And Cadmium Concentrations In The Mediterranean Mussel Mytilus Galloprovincialislamarck,1819 From The Sinop Coast Of The Black Sea, Levent Bat, Ayşe Gündoğdu, Meral Öztürk, Mehmet Öztürk

Turkish Journal of Zoology

The concentrations of copper, zinc, lead and cadmium in the living tissue of the Mediterranean mussel Mytilus galloprovincialis from the Sinop coasts of the Black Sea were measured by atomic absorption spectrophotometry for monitoring metal pollution in the coastal water. A statistically significant difference in the concentrations of all metals was observed among four sampling stations. The results were compared with previous studies and discussed.

Specific Composition And Number Of Testaceous Amoebae(Testacea Lobosia, Protozoa) Of Ganlı-Gol Lake, Ilham Alekperov, Nataly Snegovaya

Turkish Journal of Zoology

Testaceous amoebae in plankton peryphithon and benthos of the Ganlı-Gol lake in the Baku suburbs were investigated with respect to specific composition and number. Twenty-four of 64 species were recognized as a new faunal assemblage for the Caucasus. The largest diversity and number of species df testaceous amoebae occurred in benthos in silty deposits. Representatives of Difflugiidae, Centropyxidae and Arcellidae families appear to be dominant on the basis of the abundance of species.

A Review On The Control Of Eutrophication In Deep And Shallow Lakes, Meryem Bekli̇oğlu

Turkish Journal of Zoology

There has been a much debate about the relative importance of the determination of phytoplankton crops by nutrients (bottom-up control) or by zooplankton grazing (top-down control). Wide acceptance of the importance of nutrient concentrations in water quality deterioration has brought about external nutrient control by which eutrophication is, to some extent, reversible, and which has been proved its effectiveness mostly in deep lakes. In shallow lakes its effectiveness has not been as pronounced, owing to internal nutrient loading. Because the non-linearity of responses of biological systems is much more accentuated in small and shallow lakes. The use of profound effects …

Diurnal Variation Of Water Chemistry Andzooplankton In Little Mere, Cheshire, Uk, In 1993 And 1994, Meryem Bekli̇oğlu, Brian Moss

Turkish Journal of Zoology

In Little Mere, diurnal sampling of the zooplankton at three different habitats in 1993 provided little evidence to support the data of Timms and Moss (10) that cladocerans move out from refugia at night to graze in open water. The floating-leaved water lily, appeared to be more efficient at providing refuge to D. hyalina in the presence of high planktivore fish predation than the submerged plant beds and the open water. This might be due to unfavourable physical and chemical environmental conditions associated with the water lily bed for fish feeding, a possibility supported by the findings of very low …

Responses Of Meteorus Versicolor Wesm. (Hymenoptera, Braconidae) To The Population Density Of Tephrina Arenacearia Den. Et Schiff. (Lepidoptera. Geomatridae), Ilhama Gudrat Gizi Kerimova, Arifa Akhmed Gizi Abdinbekova

Turkish Journal of Zoology

The purpose of this research was the determination of the effectiveness of Meteorus versicolor Wesm. in the control of Tephrina arenacearia Den. et Schiff. We studied the behavioral responses of this braconid to changes the number of hosts in laboratory conditions. It was revealed that this parasitoid is distributed proportionally to host population density. M. versicolor can parasitize both the single and accumulated larvae of the host.

The Growth And Reproduction Characteristics Of Chub Leuciscus Cephalus Orientalis (Nordmann, 1840) Living In The River Aras, Mustafa Türkmen, H. İbrahi̇m Hali̇loğlu, Orhan Erdoğan, Ayhan Yildirim

Turkish Journal of Zoology

In this study, the populations structure, growth and reproduction characteristics of 1091 Leuciscus cephalus orientalis from the Yagan Region of River Aras between December 1995 and November 1997 were investigated monthly. The age composition of this species ranged between I and VIII. Individuals were composed of 48.85% males and 51.15% females. Female individuals attained greater size and age than males. The largest Female captured was 27.5 cm FL and age VIII, while the largest male was 24.1 cm FL and age VIII. Von Bertalanffy growth equations (in length and weight) and length-weight relationships were found as Lt=32.47(1-e -0.1217(t+1.63) ), Wt=502.10(1-e …

Accumulation Of Some Heavy Metals In Tilapia Zillii Organs From Lake Manzalah, Egypt, Mohamed Ali̇ Zyadah

Turkish Journal of Zoology

The accumulation of copper, zinc, cadmium and lead in flesh, gills, liver and gonads of Tilapia zillii were determined. Fish sizes, sexes and metal accumulation by the fish organs were studied. The levels of those heavy metals are occasionally higher in females than in males, this could be attributed to the fact that females have a higher tendency to accumulate heavy metals in fish 8- 11 cm in length were obtained, while medium sizes of fish (11-13 cm) showed more remarkable concentrations than the other sizes through both seasons and sites. The flesh accumulated low concentrations of heavy metals in …

A Preliminary Review Of The Subfamily Alticinae (Coleoptera, Chrysomelidae) In Turkey, İrfan Aslan, Blagoy Gruev, Hi̇kmet Özbek

Turkish Journal of Zoology

Distributional data about 234 species and subspecies belonging to 21 genera of Alticinae in Turkey are given. Thirteen of these taxa, Altica lythri Aubé, Aphthona rugipennis Ogloblin, Chaetocnema laevicollis (Thomson), Dibolia rugulosa Redtenbacher, Longitarsus atricillus (Gyllenhal), L. bytinskii Furth, L. jacobaeae (Waterhouse), L. reichei (Allard), L. salviae Gruev, Phyllotreta striolata (Fabricius), Ph. tetrastigma (Comolli), Psylliodes saulcyi Allard, P. testaceiconcolor Heikertinger, and one subspecies, Longitarsus alfierii furthi Gruev are new records for the fauna of Turkey. Four species (Longitarsus artvinus Gruev et Aslan, L. kopdagiensis Gruev et Aslan, Phyllotreta oltuensis Gruev et Aslan, Ph. ozbeki Gruev et Aslan) the orginal descriptions …

Some Morphological Features Of The Rectal Sac Of The Silkworm (Bombyx Mori: Bombycidae), Beri̇a Falakali Mutaf, Gamze Turgay

Turkish Journal of Zoology

The silkworm moth escapes from the pupal-protection case by utilizing cocoon-digesting enzymes. The rectal sac was examined in relation to the behaviour of the animal. Pupae and pharate adults were obtained from commercial races and were reared in the laboratory. The ball-shaped rectal sac, easily distinguishable within the abdomen of the silkworm, was found to contain two phased creamy fluid. The occurance and the shape of the organ and the usage of its fluid suggest its role in perforation of the cocoon.

A Study On Morphology And Karyology Of Prometheomys Schaposchnikowi Satunin, 1901 (Mammalia: Rodentia) In Turkey, Ercüment Çolak, Nuri̇ Yi̇ği̇t, Mustafa Sözen, Reyhan Çolak, Şaki̇r Özkurt

Turkish Journal of Zoology

Karyological, morphological, bacular and phallic aspects of Prometheomys schaposchnikowi were examined based on 22specimens collected in Ardanuç and Ardahan. The diploid number of chromosomes is 2n=56, the number of autosomal arms isNFa=100, and the fundamental number is NF=104, the X chromosome is a large submetacentric, and the Y chromosome is thesmallest metacentric. In adults, sagittal crest begins in frontal region, ends in parietal region into two parts. The phallus is covered with spines. The length of phallus is 15.94 mm in average. The median part of distal baculum is 1.51 in length. Proximal baculum is 3.74 mm in length.

A Taxonomic Study On The Fish In The Basin Of Büyükçekmece Dam Lake, Müfi̇t Özuluğ

Turkish Journal of Zoology

This study was carried out to determine the fish fauna of the basin of Büyükçekmece Dam Lake and to study the taxonomic characteristics of the fish present. As a result of examined the 586 specimens collected between April 1995 and September 1997, it was revealed that 23 fish species, including 4 subspecies, belonging to 10 families, were found in the basin of Büyükçekmece Dam Lake. This paper gives the diagnostic characteristics of these fish.

The Morphology Of Vipera Ammodytes Transcaucasiana (Reptilia, Viperidae) Specimens Collected From Murgul (Artvin, Turkey)Bilal Kutrup, Bi̇lal Kutrup

Turkish Journal of Zoology

The morphological characteristics and distribution of Vipera ammodytes transcaucasiana, which is a member of the Vipera kaznakovi group, were studied. The transcaucasian horned viper specimens were captured from Murgul, Artvin, in Turkey. This species differs from all other vipers in the Near and Middle East in respect of its pronounced horn. It is similar to Vipera pontica in the greenish-yellowish tip of the tail, but differs in having more apicals.

Contribution To The Harvest Spider (Arachnida, Opiliones)Fauna Of The Caucasus, Nataly Snegovaya

Turkish Journal of Zoology

The harvest spider fauna of Caucasus is reviewed. A new collection of 10 species (Fam. Phalangiidae, Trogulidae) from different parts of the Caucasus are dealt with. Some identifications are not clear. For clarification some more revisions are necessary in the future.

A Taxonomical Study On The Rotifera Fauna Of Abant Lake (Bolu), Ahmet Altindağ

Turkish Journal of Zoology

The rotifera fauna of Abant lake was studied taxonomically from January to November 1997. A total of 22 rotifer species were identified. Of these, 18 are new for Abant lake and 4 are new for Turkey.

The Morphology Of The Venom Apparatus And Histology Of Venom Gland Of Pimpla Turionellae(L.) (Hym; Ichneumonidae) Females, Fevzi̇ Uçkan

Turkish Journal of Zoology

The morphology of the parts of the venom apparatus and the histology of venom glands of the idiobiont solitary pupal endoparasitoid Pimpla turionellae(L.) were examined under microscope. There are two valvula 1, one valvula 2, two valvula 3, two valvifer 1, two valvifer 2, a Dufour's gland and a venom gland in the venom apparatus of P. turionellae. These structures were described and their characteristics were determined. Several venom gland tubules are attached to the reservoir at the top of the venom gland of P. turionellae. These tubules consist of spherical and oval cells of various sizes arranged around the …

A Serological Investigation Of Lacerta Viridis (Laurenti, 1768) (Sauria: Lacertidae) Populations In Turkey, Hüseyi̇n Arikan, Mehmet Kutsay Atatür, İ. Ethem Çevi̇k, Yusuf Kumlutaş

Turkish Journal of Zoology

A total of 58 (24 MM , 34 VV ) Lacerta viridis specimens, which were collected from Turkish Thrace and the Black Sea region of Anatolia, were evaluated serologically. The analyses support the view that a single race of L. viridis (L. v. meridionalis) inhabits Turkey.

Systematic Studies On The Family Apidae (Hymenoptera) In Ankara Province Part I: Bombinae, Ahmet Murat Ayteki̇n, Neşe Çağatay

Turkish Journal of Zoology

Species from the family Apidae (Hymenoptera) in Ankara province were considered. Nine species were determined from the subfamily Bombinae. Synonymies, the plants on which the specimen were caught, the Turkish and global distributions are given along with their distribution maps. Detailed drawings of the ventral view and photographs of the dorsal view of the male genitalia are also given except for the species Megabombus armeniacus(Rad.) , M. pascuorum (Scopoli), and M. humilis (Illiger), which had insufficient male specimens.

Observations On The Reproductive Biology Of Gerbillus Dasyurus (Wagner, 1842) (Mammalia: Rodentia) In Turkey, Ercüment Çolak, Mustafa Sözen, Nuri̇ Yi̇ği̇t, Şaki̇r Özkurt

Turkish Journal of Zoology

The reproductive data along with some ecological observations of Gerbillus dasyurus are reported based on field studies and investigations in captivity. The findings indicate that the favorable habitat of G. dasyurus is rocky areas with sparse vegetated soil and that the reproduction period extends from January to September. According to the reproductive data, the average weight at birth is 2.22 g., litter size ranges from 3 to 9, with an average of 5.66, a female gives three litters during a reproduction period. The eyes and ears also open at 16 days, weaning takes place at 32 days, and they become …

The Distribution Problem Of Crocidura Russula (Hermann, 1780) (Mammalia: Insectivora) In Turkey, Haluk Kefeli̇oğlu, Coşkun Tez

Turkish Journal of Zoology

In this study, to elucidate distribution problem of Crocidura russula (Hermann, 1780) species, 298 samples were taken from different geographical areas, type localities and record areas of Turkey, which were morphologically similar to C. russula were studied. The karyotypical and morphological characteristics of collected samples have been examined in detail. Those examined characteristics have been compared among themselves and compared to literature data. According to the comparative results, C. russula species is not distributed in Turkey and the Populations of C. russula reported previously in Turkey were belong to Crocidura suaveolens (Pallas, 1811).

Contributions To The Karyology And Morphology Of Arvicola Terrestris (Lin., 1758) (Mammalia: Rodentia) In Central Anatolia, Şaki̇r Özkurt, Ercüment Çolak, Nuri̇ Yi̇ği̇t, Mustafa Sözen, Reyhan Çolak

Turkish Journal of Zoology

The bacula, phalli and karyotypes of 15 specimens of Arvicola terrestris were examined. The external and cranial morphology of this species were found to be the same as in previously published papers. The baculum consist of proximal and distal bacula. The phallus is covered with spines. The karyotype has karyological values of 2n= 36, NF= 64 and NFa= 60. The X chromosome is medium-sized submetacentric and the Y chromosome is medium-sized acrocentric.