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2012

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Articles 91 - 120 of 220

Full-Text Articles in Zoology

New Species Records Of The Family Suctobelbidae (Acari: Oribatida) From Iran, Mostafa Mirzaie, Mohammad Ali Akrami Jan 2012

New Species Records Of The Family Suctobelbidae (Acari: Oribatida) From Iran, Mostafa Mirzaie, Mohammad Ali Akrami

Turkish Journal of Zoology

Suctobelbid mite fauna of the Shendabad region (East Azerbaijan Province) was studied in 2008 to determine the species found in soil samples. There were 4 species identified that are new records for the mite fauna of Iran: Suctobelbella (Flagrosuctobelba) elegantula (Hammer), Suctobelbella (Flagrosuctobelba) nana Shtanchaeva and Subias, Suctobelbella (Suctobelbella) acutidens (Forsslund), and Suctobelba trigona (Michael). One species, Suctobelba aliena Moritz, is new to Asia. An identification key is given for the species.

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Foraging And Roosting Behaviors Of Rafinesque's Big-Eared Bat (Corynorhinus Rafinesquii) At The Northern Edge Of The Species Range, Joseph S. Johnson Jan 2012

Foraging And Roosting Behaviors Of Rafinesque's Big-Eared Bat (Corynorhinus Rafinesquii) At The Northern Edge Of The Species Range, Joseph S. Johnson

Theses and Dissertations--Animal and Food Sciences

Bat populations in the eastern United States are currently declining at unprecedented rates as a result of habitat loss, commercial wind energy development, and white-nose syndrome. Effective conservation of these declining populations requires knowledge of several aspects of summer and winter ecology, including daytime habitat use (day-roost selection and social behaviors), nocturnal habitat use (foraging habitat selection, prey selection, and prey abundance), and winter hibernation (torpor) patterns. This dissertation addresses these questions for Rafinesque’s big-eared bat (Corynorhinus rafinesquii), a species of conservation concern in the southeastern United States. Kentucky represents the northern edge of the range of Rafinesque’s …

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Biology Department Newsletter, No.2, Sacred Heart University Jan 2012

Biology Department Newsletter, No.2, Sacred Heart University

Biology Newsletter

No abstract provided.

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Barnacle Bonding: Morphology Of Attachment Of Xenobalanus Globicipitis To Its Host Tursiops Truncatus, Mark C. Pugliese, Stefanie Anne Boettger, Frank E. Fish Jan 2012

Barnacle Bonding: Morphology Of Attachment Of Xenobalanus Globicipitis To Its Host Tursiops Truncatus, Mark C. Pugliese, Stefanie Anne Boettger, Frank E. Fish

Biology Faculty Publications

No abstract provided.

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Spatial Patterns Of Road Mortality: Assessing Turtle Barrier Conservation Strategies, Dorothy Ives-Dewey, James P. Lewandowski Jan 2012

Spatial Patterns Of Road Mortality: Assessing Turtle Barrier Conservation Strategies, Dorothy Ives-Dewey, James P. Lewandowski

Geography & Planning Faculty Publications

No abstract provided.

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Contributions Of Seed Bank And Vegetative Propagules To Vegetation Composition On Prairie Dog Colonies In Western South Dakota, Emily R. Helms Jan 2012

Contributions Of Seed Bank And Vegetative Propagules To Vegetation Composition On Prairie Dog Colonies In Western South Dakota, Emily R. Helms

The Journal of Undergraduate Research

Characterizing the contributions of the seed bank and vegetative propagules will enhance our understanding of community resiliency associated with prairie dog disturbances. Our objective was to determine the effects of ecological condition (EC) and distance from burrows on the soil seed bank and vegetative propagules. Based on species composition of the extant vegetation, two prairie dog colonies were selected on the Buffalo Gap National Grasslands in western South Dakota. Within each colony, two prairie dog burrows were randomly selected at each of three sample points located about 150m apart. Two soil cores were taken at 0.5m, 1.0m, and 1.5m distances …

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Morphological Investigations Of Microdrile Oligochaetes (Annelida, Clitellata) Using Scanning Electron Microscopy, Carlos Caramelo, Enrique Martinez Ansemil Jan 2012

Morphological Investigations Of Microdrile Oligochaetes (Annelida, Clitellata) Using Scanning Electron Microscopy, Carlos Caramelo, Enrique Martinez Ansemil

Turkish Journal of Zoology

Over the past several years, the authors of this work have investigated external structures of microdrile oligochaetes using scanning electron microscopy (SEM). Both published and still-unpublished data have revealed new structures of interest, especially those associated with mating, ciliate sense receptors, chaetae, and dorsal pores. Mating systems can be classified in 3 categories: grasping, coupling, and embracing. Ciliate sense receptors can be classified as poorly defined (unelevated), sensory buds, or papillae, and are provided with blunt cilia and/or sharp cilia. They are present along the whole body (including clitellum, budding, and regeneration zones), scattered on the prostomium, peristomium, and pygidium, …

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A Long-Term Eutrophication Process Observed From The Changes In The Horizontal Distribution Of Profundal Oligochaete Fauna In Mesotrophic-Eutrophic Lake Kawaguchi, Japan, Kimio Hirabayashi, Keiko Oga, Kazuya Yoshizawa, Norihiko Yoshida, Futaba Kazama Jan 2012

A Long-Term Eutrophication Process Observed From The Changes In The Horizontal Distribution Of Profundal Oligochaete Fauna In Mesotrophic-Eutrophic Lake Kawaguchi, Japan, Kimio Hirabayashi, Keiko Oga, Kazuya Yoshizawa, Norihiko Yoshida, Futaba Kazama

Turkish Journal of Zoology

The purpose of this study was to record the oligochaete fauna in Lake Kawaguchi and clarify their horizontal distribution. In addition, annual changes in the lake were recorded. Samples were collected between 5 March 1993 and 7 March 2006 by using a standard Ekman-Birge sampler at 22 stations, and multipoint sampling surveys were carried out. As a result of the study, a total of 8 species belonging to 6 genera and 3 subfamilies were identified. The average density of oligochaetes for the entire lake was 5247 ± 3873 ind m^{-2} and the average wet weight of oligochaetes was 25.5 ± …

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Distribution And Diversity Of Aquatic Oligochaeta In Small Streams Of The Middle Taiga, Maria Baturina Jan 2012

Distribution And Diversity Of Aquatic Oligochaeta In Small Streams Of The Middle Taiga, Maria Baturina

Turkish Journal of Zoology

The goal of the present study was to describe the fauna, community structure, distribution, diversity, abundance, and ecology of Oligochaeta in small streams of the Komi Republic. The work was performed in 13 streams located in the Vychegda River basin during the month of July, 2005-2008. During the study, 48 taxa from 7 families were collected. The habitat of each study stream was determined with respect to chemical water composition (Na^+, Mg^{2+}, Ca^{2+}, Cl^-, and total phosphorus (P^{tot}), among others) and some environmental factors: bottom structure (hard or soft), water temperature, depth, flow velocity, moss or algae cover, etc. The …

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Phylogeny Of Basal Descendants Of Cocoon-Forming Annelids (Clitellata), Martin Lindsey Christoffersen Jan 2012

Phylogeny Of Basal Descendants Of Cocoon-Forming Annelids (Clitellata), Martin Lindsey Christoffersen

Turkish Journal of Zoology

Molecular analyses have been unsuccessful in placing the clitellates among annelids. Available morphological characters are ordered into congruent transformation series according to Hennigian principles. Orbiniidae is chosen as the outgroup. I propose the following phylogeny [number of apomorphies within brackets]: (Clitellata sensu lato [6] (Questidae [6] + Apodadrilida, new [2] (Parergodrilidae [3] (Stygocapitella [3] + Parergodrilus [4]) + Oligochaeta [7] (Aphanoneura [2] (Aeolosomatidae [2] + Potamodrilidae [3]) + Dorsopharyngea, new [7] (Hrabeiellidae, new [6] + Euclitellata [5])))). Worms with ring-like clitella surrounding the body almost completely are herein renamed Euclitellata. Clitellata is expanded to include all annelids that, in addition …

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Profundal Oligochaete Assemblages In Palaearctic Lakes, Tarmo Timm Jan 2012

Profundal Oligochaete Assemblages In Palaearctic Lakes, Tarmo Timm

Turkish Journal of Zoology

The profundal oligochaete fauna is mostly formed of species present also in shallower waters. Endemic taxa have developed only in ancient rift lakes like Lake Baikal. "Common" lakes, mostly of glacial or volcanic origin, are too ephemeral for speciation. In the profundal of larger European oligotrophic lakes, there can occur about 10 tubificid and lumbriculid species. With a decline in dissolved oxygen in water, only 1-2 of them will remain, Tubifex tubifex often being the last survivor. In eutrophic lakes, Potamothrix hammoniensis is the climax species. In the Far East, the profundal is also inhabited by a small assortment of …

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Spatial And Temporal Variation Of Echinoderm Assemblages From Soft Bottoms Of The Çanakkale Strait (Turkish Strait System) With A Taxonomic Key Of The Genus Amphiura (Echinodermata: Ophiuroidea), Herdem Aslan Ci̇hangi̇r, Maria Antonietta Pancucci-Papadopoulou Jan 2012

Spatial And Temporal Variation Of Echinoderm Assemblages From Soft Bottoms Of The Çanakkale Strait (Turkish Strait System) With A Taxonomic Key Of The Genus Amphiura (Echinodermata: Ophiuroidea), Herdem Aslan Ci̇hangi̇r, Maria Antonietta Pancucci-Papadopoulou

Turkish Journal of Zoology

This study deals with the structure of echinoderm assemblages and their relationships with the biotic and abiotic conditions in the Çanakkale Strait in 2006 and 2007. A total of 25 echinoderm species were found, 4 species of which [Amphiura securigera (Düben & Koren, 1846); Amphiura lacazei Guille, 1976; Amphiura cherbonnieri Guille, 1972; and Thyone fusus (O.F. Müller, 1776)] were new records for Turkish fauna; 1 species [Ophiopsila annulosa (M. Sars, 1859)] was new for the Turkish Strait System; and 22 species were first reports for the Çanakkale Strait. Echinocyamus pusillus (O.F. Müller, 1776), Amphipholis squamata (Delle Chiaje, 1829), and Ophiothrix …

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Fecal Ciliate Composition Of Cypriot Domestic Horses (Equus Caballus Linnaeus, 1758), Bayram Göçmen, Gözde Gürelli̇, Burk A. Dehority Jan 2012

Fecal Ciliate Composition Of Cypriot Domestic Horses (Equus Caballus Linnaeus, 1758), Bayram Göçmen, Gözde Gürelli̇, Burk A. Dehority

Turkish Journal of Zoology

The species composition and distribution of large intestinal ciliates was investigated in feces from 5 Cypriot domestic horses living in Northern Cyprus. We identified 9 ciliate genera and 11 species. This is the first report on intestinal ciliates in Cypriot domestic horses, and no endemic species were observed. The genera Cycloposthium, Spirodinium, and Paraisotricha occurred in all animals. The mean number of ciliates was (5.5 ± 4.4) × 10^4 cells mL^-^1 of feces and the mean number of ciliate species per host was 7.2 ± 1.5. The characteristics of the domestic horse ciliates were almost identical to those reported in …

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Two New Records Of Myxobolus Bütschli, 1882 (Myxozoa, Myxosporea, Myxobolidae) Species From Turkey, Argun Aki̇f Özak, İbrahi̇m Demi̇rkale, İbrahi̇m Cengi̇zler Jan 2012

Two New Records Of Myxobolus Bütschli, 1882 (Myxozoa, Myxosporea, Myxobolidae) Species From Turkey, Argun Aki̇f Özak, İbrahi̇m Demi̇rkale, İbrahi̇m Cengi̇zler

Turkish Journal of Zoology

Two different myxosporean fish parasites (Myxobolus episquamalis Egusa, Maeno & Sorimachi, 1990 and Myxobolus ichkeulensis Bahri & Marques, 1996) are reported based on samples found on the scales and gill arches of flathead mullet (Mugil cephalus) captured from Çamlık Lagoon, located on the northeastern Mediterranean coast of Turkey. Both parasites were found for the first time on flathead mullet from the Turkish coasts. In addition to the data concerning spore morphology and the dimensions of both species, new additional taxonomic observations are presented. Furthermore, asynchronous polar capsule maturation was observed in transmission electron microscope images of both species.

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Parasitic Hymenoptera Reared From The Insects On Heracleum Platytaenium Boiss. (Apiaceae) With New Faunistic And Biological Records, Erhan Koçak, Mustafa Özdemi̇r Jan 2012

Parasitic Hymenoptera Reared From The Insects On Heracleum Platytaenium Boiss. (Apiaceae) With New Faunistic And Biological Records, Erhan Koçak, Mustafa Özdemi̇r

Turkish Journal of Zoology

Some parasitic hymenopterans were reared from their host insects found on the stems and branches of Heracleum platytaenium Boiss., which contains furanocoumarins that are insect repellents and suppress growth in some species. Plant materials with insects were collected from the vicinity of Kızılcahamam in Ankara Province in July-September 2008. The parasitoids (Hymenoptera) and their hosts were Didyctium brunnea (Belizin) (Eucolidae) from puparia of Lasiambia albidipennis (Strobl) (Diptera: Chloropidae), Pronotalia carlinarum (Szelenyi & Erdos) (Eulophidae) and Homoporus febriculosus (Girault) (Pteromalidae) from puparia of Melanagromyza heracleana Zlobin (Diptera: Agromyzidae), and Baryscapus crassicornis (Erdos) (Eulophidae) from larvae, pupae, and adults of Lixus nordmanni …

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Aspects Of Biology Of The Deep-Water Pandalid Shrimp Plesionika Martia (A. Milne-Edwards, 1883) From Sığacık Bay (Eastern Mediterranean), Cengi̇z Koçak, Murat Özbek, Zafer Tosunoğlu Jan 2012

Aspects Of Biology Of The Deep-Water Pandalid Shrimp Plesionika Martia (A. Milne-Edwards, 1883) From Sığacık Bay (Eastern Mediterranean), Cengi̇z Koçak, Murat Özbek, Zafer Tosunoğlu

Turkish Journal of Zoology

Some aspects concerning the reproduction, growth, and population dynamics of Plesionika martia were studied. Individuals were collected monthly between May 2008 and April 2009 during surveys conducted using a commercial trawl vessel. Samples were collected from Sığacık Bay (Aegean Sea, eastern Mediterranean) at depths ranging from 494 to 550 m. A total of 2110 individuals (766 males and 1344 females) were caught during these monthly surveys. The carapace length (CL) of the males ranged from 12.4 to 22.1 mm, and in females the CL ranged between 11.5 and 24.9 mm. The values of both CL and weight in females consistently …

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The Seasonality Of Group Size And Group Composition Of Sand Partridge (Ammoperdix Heyi Heyi Temminck, 1825) In The Ibex Reserve, Saudi Arabia, Torsten Wronski Jan 2012

The Seasonality Of Group Size And Group Composition Of Sand Partridge (Ammoperdix Heyi Heyi Temminck, 1825) In The Ibex Reserve, Saudi Arabia, Torsten Wronski

Turkish Journal of Zoology

The seasonality of group size and composition in sand partridges was studied at the Ibex Reserve in central Saudi Arabia. Mean group size and flock encounter rate were significantly related to rainfall and temperature. During winter and the breeding season (March to April), the encounter rate on the valley floors was distinctly lower than that observed during summer. Although encounter rates did not differ significantly between valleys, sand partridges were more likely to be encountered in narrow, stony valleys. Correcting for valley width, encounter rates did not differ between valleys. Male and female encounter rates were constant throughout the reserve, …

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Morphological And Histological Effects Of Copper Sulfate On The Larval Development Of Green Toad, Bufo Viridis, Mert Gürkan, Si̇bel Hayretdağ Jan 2012

Morphological And Histological Effects Of Copper Sulfate On The Larval Development Of Green Toad, Bufo Viridis, Mert Gürkan, Si̇bel Hayretdağ

Turkish Journal of Zoology

Declines in populations of amphibians have been occurring more dramatically over the past 25 years. The declines have various causes. One of the possible causes of amphibian declines is pesticides. Copper sulfate is commonly used as a fungicide in vineyards and gardens in Turkey. In this study, our purpose was to explain the morphologically and histologically acute toxic effects of copper sulfate on Bufo viridis tadpoles. B. viridis tadpoles at Gosner stage 21 were exposed to different concentrations (0.01, 0.05, and 0.1 mg/L) of copper sulfate for 120 h. The LC_5_0 value of copper sulfate was calculated as 0.058 mg/L. …

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The Combined Effects Of Salinity And Temperature On The Egg Hatching Rate, Incubation Time, And Survival Until Protozoal Stages Of Metapenaeus Monoceros (Fabricius) (Decapoda: Penaeidae), Mevlüt Aktaş, Nuran Çavdar Jan 2012

The Combined Effects Of Salinity And Temperature On The Egg Hatching Rate, Incubation Time, And Survival Until Protozoal Stages Of Metapenaeus Monoceros (Fabricius) (Decapoda: Penaeidae), Mevlüt Aktaş, Nuran Çavdar

Turkish Journal of Zoology

The combined effects of 3 different temperatures (24, 28, and 32 °C) and salinity levels (35, 40, and 45 g L^{-1}) on the egg hatching rate, incubation time, larval activity, and survival rate until protozoal (PZ1) stage of Metapenaeus monoceros (Fabricius) were investigated under controlled laboratory conditions. The average fertilization rate was 97.25% following spawning. The eggs were stocked in 2-L glass larval culture flasks and received 1 of 9 salinity and temperature combinations in 3 replicates. The eggs hatched in all treatments. Temperature, salinity, and their interaction had significant influences on the hatching rate of the eggs (P < 0.05). The hatching rate decreased as salinity increased and was lowest in all temperature levels at a salinity of 45 g L^{-1}. With regard to the hatching rate, the best combinations were obtained at 35 g L^{-1} and 32 °C (91.67%) and at 35 g L^{-1} and 28 °C (89.17%). The incubation time was shorter at 32 °C (11.2 h) than at 28 °C (14 h) or 24 °C (17.2 h). The development rate from the naupliar stage to the protozoal stage was best at a salinity level of 35 g L^{-1} combined with temperatures of 28 °C and 32 °C. Larval activity was also found to be best at 28 °C and 32 °C at 35 g L^{-1} and 40 g L^{-1}, as compared to that at 24 °C in all salinity levels.

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Nucleolar Organizer Regions In Mesocricetus Brandti (Nehring, 1898) (Mammalia: Rodentia) From The Yozgat And Tokat Provinces Of Turkey, Nursel Baydemi̇r Jan 2012

Nucleolar Organizer Regions In Mesocricetus Brandti (Nehring, 1898) (Mammalia: Rodentia) From The Yozgat And Tokat Provinces Of Turkey, Nursel Baydemi̇r

Turkish Journal of Zoology

Mesocricetus brandti possesses a diploid chromosome number of 2n = 42, a fundamental number of NF = 82, and a fundamental number of autosomal arms of NFa = 78. The chromosome set consists of 17 meta-submetacentric pairs, 2 subtelocentric pairs, and 1 acrocentric pair. The X chromosome is large and metacentric while the Y is medium-sized and metacentric. The nucleolar organizer regions were located at the telomeric region of 7 biarmed autosomes and at the centromeric region of 1 acrocentric autosome.

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A New Genus And Species For Turkish Fauna: Zeiraphera Isertana (Fabricius, 1794) (Lep.: Tortricidae), Mustafa Özdemi̇r, Ayşe Özdem Jan 2012

A New Genus And Species For Turkish Fauna: Zeiraphera Isertana (Fabricius, 1794) (Lep.: Tortricidae), Mustafa Özdemi̇r, Ayşe Özdem

Turkish Journal of Zoology

In this study, Zeiraphera isertana (Fabricius, 1794) is newly recorded among Turkish Tortricidae fauna. This is the first record of the genus Zeiraphera Treirschke, 1829 from Turkey. The specimens were collected from cherry trees in Afyonkarahisar Province during 2008. Collection was done via bait traps used for the control of Tortricidae pest moths. Both male genitalia and imago were depicted.

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Thysanoptera Fauna Of The Lakes Region, Turkey, İrfan Tunç, Şeri̇fe Ünal Bahşi̇, Hüseyi̇n Sümbül Jan 2012

Thysanoptera Fauna Of The Lakes Region, Turkey, İrfan Tunç, Şeri̇fe Ünal Bahşi̇, Hüseyi̇n Sümbül

Turkish Journal of Zoology

The Thysanoptera fauna of the Lakes Region of Turkey was studied in 1990-1992. A total of 3173 specimens from 397 samples were examined. The study revealed 74 Thysanoptera species and 45 of them are new records for the region. Three genera, namely Bregmatothrips Hood, Eremiothrips Priesner, and Iridothrips Priesner; and 5 species, namely Bregmatothrips dimorphus (Priesner), Eremiothrips dubius (Priesner), Eremiothrips taghizadehi (zur Strassen), Iridothrips iridis (Watson), and Mycterothrips annulicornis (Uzel) are new records for the Turkish fauna. The previously unknown male (allotype) of Rhipidothrips flavus Tunç was discovered and described. The most common and abundant species, with the number of …

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Distribution Of Soft-Bottom Mollusks (Mollusca) In Mersin Bay (Eastern Mediterranean Sea), Erhan Mutlu, Mehmet Beti̇l Ergev Jan 2012

Distribution Of Soft-Bottom Mollusks (Mollusca) In Mersin Bay (Eastern Mediterranean Sea), Erhan Mutlu, Mehmet Beti̇l Ergev

Turkish Journal of Zoology

A total of 44 molluscan species belonging to 5 classes were identified in 3 transects (including depths of 10, 25, 50, 75, 100 and 200 m) located in Kumkuyu, Limonlu, and Erdemli. Overall, no significant difference in community parameters such as diversity index, evenness index, and species richness was found among transects. The species abundance showed seasonal and depth-wise variations. The highest species richness (6-16 species) was encountered between depths of 10 and 100 m in winter and spring, whereas the molluscan population increased in warm seasons due to the high abundance of Corbula gibba and Nucula nitidosa. Bivalves and …

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A New Species Of Tephritis Latreille (Diptera: Tephritidae) From Turkey, Murat Kütük, Nesli̇han Bayrak, Rüstem Hayat Jan 2012

A New Species Of Tephritis Latreille (Diptera: Tephritidae) From Turkey, Murat Kütük, Nesli̇han Bayrak, Rüstem Hayat

Turkish Journal of Zoology

Tephritis ozaslani sp. nov. is described from Artvin Province of Turkey and placed in the T. pulchra species group. The key to the T. pulchra group is provided, which includes 9 species. The main characters that distinguish the new species from the closely resembling Palaearctic species, T. cometa israilis Freidberg, T. acanthiophilopsis Hering, T. erdemlii Kütük, T. divisa Rondani, T. recurrens Loew, T. merzi Freidberg & Kütük, and T. hurvitzi Freidberg, are discussed. In addition, Inula oculus christi L. (Asteraceae) is determined as a host plant of the new species.

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First Record And Detailed Description Of The Male Of Ilyocypris Inermis Kaufmann, 1900 (Crustacea, Ostracoda), Necmetti̇n Sari, Okan Külköylüoğlu, Derya Akdemi̇r Jan 2012

First Record And Detailed Description Of The Male Of Ilyocypris Inermis Kaufmann, 1900 (Crustacea, Ostracoda), Necmetti̇n Sari, Okan Külköylüoğlu, Derya Akdemi̇r

Turkish Journal of Zoology

Bisexual populations of Ilyocypris inermis Kaufmann, 1900 were reported for the first time from 5 different aquatic bodies in Bolu and Erzincan (Turkey). The males were compared with the males of the other 11 species of the genus Ilyocypris (I. australiensis, I. biplicata, I. decipiens, I. dentifera, I. divisa, I. fallax, I. getica, I. gibba, I. lacustris, I. mongolica, and I. monstrifica) and described based on examinations of the soft body parts (e.g., hemipenis, legs, clasping organs) and valves. Ecological characteristics of habitats where the bisexual populations found were discussed for future studies.

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New Record Of The Leafhopper Genus Busoniomimus Maldonado-Capriles From China (Hemiptera, Cicadomorpha, Cicadellidae) With Description Of A New Species, Bin Zhang, Zi Zhong Li Jan 2012

New Record Of The Leafhopper Genus Busoniomimus Maldonado-Capriles From China (Hemiptera, Cicadomorpha, Cicadellidae) With Description Of A New Species, Bin Zhang, Zi Zhong Li

Turkish Journal of Zoology

The idiocerine leafhopper genus Busoniomimus Maldonado-Capriles, 1977 is recorded for the first time in China, and a new species, B. hainanensis sp. nov., is described and illustrated from Hainan Province, China. A key to species of the genus Busoniomimus is given, and a checklist of all known species of the genus Busoniomimus is also provided.

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Histopathological Effects Of Montivipera Xanthina Venom On Rats, Hüseyi̇n Topyildiz, Si̇bel Hayretdağ Jan 2012

Histopathological Effects Of Montivipera Xanthina Venom On Rats, Hüseyi̇n Topyildiz, Si̇bel Hayretdağ

Turkish Journal of Zoology

In this study, the histopathological changes caused by Montivipera xanthina venom to rat skin, skeletal muscle, and liver tissue were analysed by light microscope. The venom (approximately 2.85 mg/kg) was injected intramuscularly into the gastrocnemius muscle of the rats. The animals were dissected 1, 3, and 6 h after the injection time, and tissue samples were taken. Sections 5 µm thick were taken from paraffin blocks of tissue samples, and the sections were stained with haematoxylin and eosin in order to facilitate examination by light microscope. Examinations showed no damage to the epidermis layer of skin. However, damage to the …

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Acute Toxicity Of Nickel To Fresh Water Prawns, Ravi Shanker Verma Jan 2012

Acute Toxicity Of Nickel To Fresh Water Prawns, Ravi Shanker Verma

Turkish Journal of Zoology

In the present study, the LC_{50} of nickel and its impact on the behaviour of 2 species of freshwater prawns, Macrobrachium lamarrei (H. Milne Edwards) and Macrobrachium dayanum (Henderson) was evaluated. An inverse relationship between LC_{50} values and exposure duration was obtained. Nickel was found to be 6.33 times more toxic to M. lamarrei than to M. dayanum. Nickel exposure increased aggression and loss of balance in both species of prawns in a concentration-dependent manner with both parameters being higher in M. dayanum (416.47 mg/L) than in M. lamarrei (65.77 mg/L). All behavioural parameters decreased with increase in exposure duration …

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Growth Performance And Body Composition Of Kutum Fingerlings, Rutilus Frisii Kutum (Kamenskii 1901),In Response To Dietary Protein Levels, Ghaffar Ebrahimi, Hossein Ouraji Jan 2012

Growth Performance And Body Composition Of Kutum Fingerlings, Rutilus Frisii Kutum (Kamenskii 1901),In Response To Dietary Protein Levels, Ghaffar Ebrahimi, Hossein Ouraji

Turkish Journal of Zoology

A feeding trial was conducted to determine the optimal dietary crude protein requirement for Rutilus frisii kutum fingerlings. Five isoenergetic experimental diets were formulated to contain graded levels of protein (32%, 37%, 42%, 47%, and 52%). Triplicate groups of 80 kutum (average weight 0.5 g) were stocked in 250-L tanks and fed to apparent satiation 3 times a day for 8 weeks. The results indicate that the growth performance and feed utilization of kutum were significantly (P < 0.05) affected by dietary protein level. The second polynomial regression of weight gain against protein level yielded an estimated optimal dietary protein requirement of 41.6%. Weight gain, specific growth rate, and feed efficiency increased with increasing the dietary protein level from 32% to 42%, but decreased significantly (P < 0.05) with further increases in dietary protein. The protein efficiency ratio was inversely correlated with dietary protein level. Feed intake was not affected (P > 0.05) by dietary protein level. No significant difference was found in the whole-body protein, lipid, moisture, or ash contents of fish fed the …

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An Alternative Storage Method For Entomopathogenic Nematodes, Bariş Gülcü, Selçuk Hazir Jan 2012

An Alternative Storage Method For Entomopathogenic Nematodes, Bariş Gülcü, Selçuk Hazir

Turkish Journal of Zoology

Tetra Pak containers were evaluated as an alternative to tissue culture flasks for nematode storage. Our data showed that Tetra Pak containers were an excellent alternative to tissue culture flasks for storage of H. bacteriophora and will more than likely be useful for other entomopathogenic nematode species.

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