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Articles 7711 - 7740 of 10522

Full-Text Articles in Zoology

Chromosomes Of Oedipoda Schochi Schochi And Acrotylus Insbricus (Orthoptera, Acrididae, Oedipodinae). Karyotypes And C- And G-Band Patterns, Şi̇fa Türkoğlu, Serdar Koca Jan 2002

Chromosomes Of Oedipoda Schochi Schochi And Acrotylus Insbricus (Orthoptera, Acrididae, Oedipodinae). Karyotypes And C- And G-Band Patterns, Şi̇fa Türkoğlu, Serdar Koca

Turkish Journal of Zoology

Chromosomes, with detalied karyotype information (number, shape, total length, relative length, arm ratio and centromeric index) and C- and G-band patterns of two species of grasshoppers belonging to the subfamily Oedipodinae in Turkey are described. The karyotype of Oedipoda schochi schochi with 2n O = 25 (X0) comprises eight pairs of metacentric, two pairs of submetacentric, one pair of acrocentric and one pair of subacrocentric autosomes, which come from 2n O = 23 through centric fission and the metacentric X chromosome, while Acrotylus insbricus with 2n O = 23 (X0) possesses metacentric autosomes, and the metacentric X chromosome.

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Community Structure Of Macrobenthos Of A Southeast Texas Sand-Pit Lake Related To Water Temperature, Ph And Dissolved Oxygen Concentration, Kemal Çeli̇k Jan 2002

Community Structure Of Macrobenthos Of A Southeast Texas Sand-Pit Lake Related To Water Temperature, Ph And Dissolved Oxygen Concentration, Kemal Çeli̇k

Turkish Journal of Zoology

Water temperature (°C), pH, dissolved oxygen concentration (mg/l) and the community structure of the macrobenthos of a small southeast Texas sand-pit (Barry's) lake were studied from June 1995 to February 1996, which covered climatic extremes. The lake was a warm monomictic lake and no anoxic conditions were observed at any depth during the entire study period. A total of 50 taxa and 5614 individuals of macrobenthos were collected. The dominant organisms were Chaoborus punctipennis (Say), Limnodrilus hoffmeisteri (Claparede), and Dero obtusa (Udekem). The only established populations at 6.5 m were Chaoborus punctipennis, Limnodrilus hoffmeisteri, and Chironomus sp. Species diversity ranged …

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Seasonal Fluctuation In The Rotifer Fauna Of Kesikköprü Dam Lake (Ankara, Turkey), Si̇bel Yi̇ği̇t Jan 2002

Seasonal Fluctuation In The Rotifer Fauna Of Kesikköprü Dam Lake (Ankara, Turkey), Si̇bel Yi̇ği̇t

Turkish Journal of Zoology

The individual and seasonal variations of 11 rotifer species identified in Kesikköprü Dam Lake were investigated from April 1995 to May 1996. Species-wise percentages were Polyarthra vulgaris 24.5%, Keratella quadrata 20.8%, Asplanchna priodonta 16.0%, Brachionus angularis 11.2%, Keratella cochlearis 8.8%, Synchaeta litoralis 7.0%, Lecane luna 4.0%, Notholca squamula 3.8%, Lepadella patella 1.6%, Notholca acuminata 1.4% and Colurella adriatica 0.7%. Apart from two seasonal peaks in spring and autumn, some species such as S. litoralis, L. luna, N. squamula, and C. adriatica showed smaller fluctuations other than during seasonal peaks. When the annual abundance of species was taken into consideration, P. …

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The Toxic Effects Of Malathion (Organophosphate Insecticide) On The Daphnia Magna Straus, 1820 (Crustacea, Cladocera), Maryam Rassoulzadegan, Nusret Akyurtlakli Jan 2002

The Toxic Effects Of Malathion (Organophosphate Insecticide) On The Daphnia Magna Straus, 1820 (Crustacea, Cladocera), Maryam Rassoulzadegan, Nusret Akyurtlakli

Turkish Journal of Zoology

The toxic effects of technical grade (95 %) malathion and commercial (25 %) malathion were investigated on young (£ 24 h old) Daphnia magna in static acute toxicity tests (24 and 48 h). The culture of D. magna and toxicity tests were performed at 24 ± 1 ºC with a photoperiod of 16 h light and 8 h dark. To obtain a healthy population, the fecundity of each female in their life cycle was also investigated. The immobilization of daphnids was considered for determination of the 24 h / 48 h effective concentration (50 %). The EC50 values were found …

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Impact Of Two Sublethal Concentrations Of Copper Chloride And Chlorine On The Excretory Products Of Crab Sesarma Quadratum (Fabricius), Santhana Valarmathi, Jayapaul Azariah Jan 2002

Impact Of Two Sublethal Concentrations Of Copper Chloride And Chlorine On The Excretory Products Of Crab Sesarma Quadratum (Fabricius), Santhana Valarmathi, Jayapaul Azariah

Turkish Journal of Zoology

Excretion in estuarine animals is considered to be an important factor in assessing their physiological status. The pattern of oxygen consumption and excretion patterns (ammonia and nitrite) in medium size mud crabs of S. quadratum (3 to 4 g weight) were studied under laboratory conditions at two sublethal concentrations of 1/10 and 1/3 of the LC_{50} value of copper chloride and chlorine. The rates of oxygen consumption and excreted products were negatively correlated to the sublethal concentrations of the toxicant. Reduced rates of oxygen consumption and excretion of ammonia and nitrite were observed when exposed to these sublethal concentrations.

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A Faunistic Study On Asiobates Thomson, 1859 (Hydraenidae, Polyphaga, Coleoptera) Species, Ahmet Kasapoğlu, Orhan Erman Jan 2002

A Faunistic Study On Asiobates Thomson, 1859 (Hydraenidae, Polyphaga, Coleoptera) Species, Ahmet Kasapoğlu, Orhan Erman

Turkish Journal of Zoology

A list of Asiobates species known from Turkey and their distribution worldwide are presented. A brief review and discussion of the new records, Ochthebius (Asiobates) cantabricus Balfour-Browne, 1978 and Ochthebius (Asiobates) remotus Reitter, 1887, has also been added.

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The Occurrence Of The Rumen Ciliate Metadinium Banksi Dehority, 1985 (Ophryoscolecidae, Entodiniomorphida) From Domestic Goats (Capra Hircus L.) In Southeastern Turkey, Bayram Göçmen, Burk A. Dehority, Sami̇ye Rastgeldi̇ Jan 2002

The Occurrence Of The Rumen Ciliate Metadinium Banksi Dehority, 1985 (Ophryoscolecidae, Entodiniomorphida) From Domestic Goats (Capra Hircus L.) In Southeastern Turkey, Bayram Göçmen, Burk A. Dehority, Sami̇ye Rastgeldi̇

Turkish Journal of Zoology

Metadinium banksi was observed in rumen contents from a single goat out of eight living in southeastern Turkey. It constituted 0.25% of the total ciliate population and had a 12.5% frequency of appearance. The size and percentage occurrence of this species in the present study are compared to those previously reported for other animal hosts living in different geographical locations. This study reports for the first time in Turkey the presence of Metadinium banksi in arctic ruminants.

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Coccid (Homoptera: Coccoidea) Species Of Isparta Province, And Their Parasitoids From Turkey And Georgia, George Japoshvili, İsmai̇l Karaca Jan 2002

Coccid (Homoptera: Coccoidea) Species Of Isparta Province, And Their Parasitoids From Turkey And Georgia, George Japoshvili, İsmai̇l Karaca

Turkish Journal of Zoology

A list of coccids distributed in Isparta province (Turkey) is given in this paper. Their parasitoids determined in Isparta and previously reported from Turkey and Georgia are also discussed. As a result of the survey studies performed in June-November, 2001, 21 species of coccids were found on different host plants in Isparta province. From 16 of these coccids, 19 species of parasitoids were obtained. The similarity index of two countries in terms of their coccid parasitoids fauna was 0.635.

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A New Record Of A Water Mite (Acari, Hydrachnellae) For The Turkish Fauna: Gnaphiscus Setosus Koenike, 1898, Ahmet Bursali, Muhli̇s Özkan Jan 2002

A New Record Of A Water Mite (Acari, Hydrachnellae) For The Turkish Fauna: Gnaphiscus Setosus Koenike, 1898, Ahmet Bursali, Muhli̇s Özkan

Turkish Journal of Zoology

The morphological characters and geographical distribution of Gnaphiscus setosus Koenike, 1898, a new record for the Turkish fauna, are given.

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The Growth Features Of Tench (Tinca Tinca L., 1758) In Bayındır Dam Lake, Ankara, Turkey, Ahmet Altindağ, Syed Lal Shah, Si̇bel Yi̇ği̇t Jan 2002

The Growth Features Of Tench (Tinca Tinca L., 1758) In Bayındır Dam Lake, Ankara, Turkey, Ahmet Altindağ, Syed Lal Shah, Si̇bel Yi̇ği̇t

Turkish Journal of Zoology

The growth features of tench, Tinca tinca, in Bayındır Dam Lake were studied between March 1999 and February 2000. A total of 100 samples (51 males and 49 females) were examined. Age in both sexes ranged from age group I to V. The sex ratio was 1.04 and 1.0 for males and females respectively. The fork length and weight of females and males varied from 15.2 to 33.2 cm and 51.4 to 650.7 g and 15.7 to 34.7 cm and 52.8 to 822.6 g respectively. Age-length and age-weight relationships were obtained using the Von Bertalanffy growth equation. Allometric growth patterns …

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Age Determination Of Shad (Alosa Pontica Eichwald,1838) Inhabiting The Black Sea, Savaş Yilmaz, Nazmi̇ Polat Jan 2002

Age Determination Of Shad (Alosa Pontica Eichwald,1838) Inhabiting The Black Sea, Savaş Yilmaz, Nazmi̇ Polat

Turkish Journal of Zoology

The most reliable bony structure and method were investigated for age determination of shad (Alosa pontica Eichwald, 1838) inhabiting the Black Sea. Therefore, five bony structures such as scale, vertebra, otolith, opercle and subopercle were removed from 240 individuals collected from April 1998 to April 1999. Each bony structure was prepared for age determination by different techniques, and examined by binocular microscope. Mean ages were estimated for each bony structure-reader combination and the precision of age estimated from multiple readings was evaluated. Furthermore, the error of ageing was calculated. Vertebra was the most reliable bony structure for ageing this species …

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Comparison Of The Growth Performance And Mortality In Abant Trout (Salmo Trutta Abanticus Tortonese, 1954) And Rainbow Trout (Oncorhynchus Mykiss Walbaum, 1792) Under Farming Conditions, İrfan Uysal, Ati̇lla Alpbaz Jan 2002

Comparison Of The Growth Performance And Mortality In Abant Trout (Salmo Trutta Abanticus Tortonese, 1954) And Rainbow Trout (Oncorhynchus Mykiss Walbaum, 1792) Under Farming Conditions, İrfan Uysal, Ati̇lla Alpbaz

Turkish Journal of Zoology

This experiment was conducted between 15th February 2000 (day 1) and 31st January 2001 (day 350) at the DSI-Gölköy Fish Production Station, Bolu (Turkey). Abant trout larvae obtained from eggs of wild Abant trout broodstocks in Lake Abant and rainbow trout larvae obtained from eggs of the hatchery broodstocks in Gölköy Fish Production Station were used. Trials I and II involved eight groups (four Abant and rainbow trout experimental groups, and four Abant and rainbow trout parallel groups). A total of 1784 larvae was used in both the trials. At the end of the experiment, although the mean wet weight …

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Nebraska's Nature Compendium, Thomas E. Labedz Jan 2002

Nebraska's Nature Compendium, Thomas E. Labedz

University of Nebraska State Museum: Mammalogy Papers

With attrition claiming many academic organismal biologists, and many institutions failing to replace them, it can be difficult for natural history novices to obtain basic information for broad geographic areas. Johnsgard conceived The Nature of Nebraska in response to a tenacious teacher and the needs of her fourth-grade class in Elwood, Nebraska. This book will help fill the need for persons, especially teachers, struggling to find basic information on Nebraska's natural history and guidance in natural history education.

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A New Record For The Turkish Spider Fauna: Cyclosa Conica Pallas (Araneae, Araneidae), Abdullah Bayram, Murat Ünal Jan 2002

A New Record For The Turkish Spider Fauna: Cyclosa Conica Pallas (Araneae, Araneidae), Abdullah Bayram, Murat Ünal

Turkish Journal of Zoology

The characteristic features and drawings of Cyclosa conica Pallas, 1772, which is recorded for the first time in Turkey, are given in this study.

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Floral Choices, Parasites And Micro-Organisms In Natural Populations Of Bumblebees (Apidae: Hymenoptera) In Ankara Province, Ahmet Murat Ayteki̇n, Neşe Çağatay, Selçuk Hazir Jan 2002

Floral Choices, Parasites And Micro-Organisms In Natural Populations Of Bumblebees (Apidae: Hymenoptera) In Ankara Province, Ahmet Murat Ayteki̇n, Neşe Çağatay, Selçuk Hazir

Turkish Journal of Zoology

In this study, the flower choices of different bumblebee species in Ankara province regarding their associations among various parasites and micro-organisms were determined. A total of 21 different species of the genera Bombus Latreille and Psithyrus Lepeletier were examined. The motile hypopus of the mite species Acarus farris (Oudemans, 1905) (Acaridae) was found to be phoretic on Bombus (Bombus) terrestris, Megabombus (Megabombus) argillaceus, Megabombus (Thoracobombus) zonatus and Pyrobombus (Sibiricobombus) niveatus queens. Nosema bombi was also determined to be an internal parasite of B. terrestris. Finally, a nematode species belonging to the family Allantonematidae (Tylenchida) was isolated from Megabombus (Thoracobombus) sylvarum …

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The Effects Of Acute Stress On Rainbow Trout (Oncorhynchus Mykiss), Ayşegül Kubi̇lay, Gülşen Uluköy Jan 2002

The Effects Of Acute Stress On Rainbow Trout (Oncorhynchus Mykiss), Ayşegül Kubi̇lay, Gülşen Uluköy

Turkish Journal of Zoology

The physiological effects of acute stressors (transport, handling, netting and confinement) on rainbow trout in an aquaculture system were investigated. Serum cortisol level, serum glucose and lysozyme activity were determined in rainbow trout stressed by acute stressors, and compared with those of unstressed (control) fish. Serum cortisol, glucose levels and lysozyme activity were significantly higher(P

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Distribution Of Clinostomum Marginatum (Yellow Grub) Metacercaria In Smallmouth Bass Populations From Crooked Creek In North Central Arkansas, James J. Daly, Bruce Deyoung, Terryl L. Hostetler, Randal J. Keller Jan 2002

Distribution Of Clinostomum Marginatum (Yellow Grub) Metacercaria In Smallmouth Bass Populations From Crooked Creek In North Central Arkansas, James J. Daly, Bruce Deyoung, Terryl L. Hostetler, Randal J. Keller

Journal of the Arkansas Academy of Science

Four hundred thirty-three smallmouth bass (Micropterus dolomieui) were collected from ten sites on Crooked Creek in North Central Arkansas from just below the city of Harrison to the White River in the summers of 1988-90. Necropsy of these hosts for yellow grub (Clinostomum marginatum) metacercariae showed a range of mean abundance (average/fish) from 1.4 ±1.9 (SD) at a far up stream site to 105 ± 368 at the White River juncture. An increasing mean abundance of C. marginatum was seen from the uppermost sites of the creek downstream to the White River. Relating stream mileage with mean abundance gave a …

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Epidermal Papilloma In An Ozark Hellbender (Cryptobranchus Alleganiensis Bishopi) From The Spring River Of Northwest Arkansas, Stanley E. Trauth, John C. Harshbarger, Patrick Daniel Jan 2002

Epidermal Papilloma In An Ozark Hellbender (Cryptobranchus Alleganiensis Bishopi) From The Spring River Of Northwest Arkansas, Stanley E. Trauth, John C. Harshbarger, Patrick Daniel

Journal of the Arkansas Academy of Science

An Ozark hellbender (Cryptobranchus alleganiensis bishopi) with multiple, large, warty skin lesions was collected in the Spring River, Fulton County, Arkansas, in 1994. The specimen was a female, 560 mm in total length, and had a mass of 1,947 g. Tissues were formalin-fixed, and three lesions were processed for histopathology. The normal skin at the tumor margins had a stratified squamous epidermis overlying a loose, well-vascularized, heavily pigmented dermis. Poison glands and mucous glands extended from the epidermis into the dermis. The lesions, in contrast, were masses of epidermal cells up to 100 times thicker than the normal epidermis. They …

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Bats Of The Jessieville Ranger District, Ouachita National Forest, Arkansas, C. Renn Tumlison, Tobin Fulmer, Tommy Finley, David A. Saugey Jan 2002

Bats Of The Jessieville Ranger District, Ouachita National Forest, Arkansas, C. Renn Tumlison, Tobin Fulmer, Tommy Finley, David A. Saugey

Journal of the Arkansas Academy of Science

During July and August 2000 and 2001, mist nets were set concentrated on three drainages in the Jessieville District of the Ouachita National Forest: North Fork Ouachita River (ten sites), Irons Fork Creek (five sites), and Muddy Creek (two sites). A total of 83 bats representing seven species was caught during 20 evenings (43 net nights). Sampled habitats included pools in road ruts, intermittent streams, man-made ponds on ridgelines, a wet road rut fed by a seep, small drainages that flowed only after a heavy rain, a standing pool in a clearing, and larger streams. Eastern red bats (Lasiurus borealis) …

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Hazards Of Fishing Gear To Wildlife Of Lakes In Arkansas, Tobin Fulmer, C. Renn Tumlison Jan 2002

Hazards Of Fishing Gear To Wildlife Of Lakes In Arkansas, Tobin Fulmer, C. Renn Tumlison

Journal of the Arkansas Academy of Science

No abstract provided.

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Habitat And Abundance Of The Ouachita Darter (Percina Sp. Nov.), Charles J. Gagen, Kendall R. Moles, Lisa J. Hlass, Richard W. Standage Jan 2002

Habitat And Abundance Of The Ouachita Darter (Percina Sp. Nov.), Charles J. Gagen, Kendall R. Moles, Lisa J. Hlass, Richard W. Standage

Journal of the Arkansas Academy of Science

No abstract provided.

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Coccidian Parasites (Apicomplexa: Eimeriidae) Of Select Rodents Of Western And Southwestern Arkansas And Northeastern Texas, Chris T. Mcallister, Joshua E. Kessler Jan 2002

Coccidian Parasites (Apicomplexa: Eimeriidae) Of Select Rodents Of Western And Southwestern Arkansas And Northeastern Texas, Chris T. Mcallister, Joshua E. Kessler

Journal of the Arkansas Academy of Science

No abstract provided.

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Parasites Of Four Endemic Plethodon From Arkansas And Oklahoma, Chris T. Mcallister, Charles R. Bursey, Stanley E. Trauth Jan 2002

Parasites Of Four Endemic Plethodon From Arkansas And Oklahoma, Chris T. Mcallister, Charles R. Bursey, Stanley E. Trauth

Journal of the Arkansas Academy of Science

No abstract provided.

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Concentrations Of American Alligator Populations In Arkansas, Christopher L. Watt, Philip A. Tappe, Mark F. Roth Jan 2002

Concentrations Of American Alligator Populations In Arkansas, Christopher L. Watt, Philip A. Tappe, Mark F. Roth

Journal of the Arkansas Academy of Science

No abstract provided.

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Abnormalities In The Ozark Hellbender, (Cryptobranchus Alleganiensis Bishopi), Benjamin A. Wheeler, Malcolm L. Mccallum, Stanley E. Trauth Jan 2002

Abnormalities In The Ozark Hellbender, (Cryptobranchus Alleganiensis Bishopi), Benjamin A. Wheeler, Malcolm L. Mccallum, Stanley E. Trauth

Journal of the Arkansas Academy of Science

No abstract provided.

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Micrommata Virescens (Clerck, 1757), A New Species For The Spider Fauna Of Turkey (Araneae, Sparassidae), Abdullah Bayram, Sevda Özdağ Jan 2002

Micrommata Virescens (Clerck, 1757), A New Species For The Spider Fauna Of Turkey (Araneae, Sparassidae), Abdullah Bayram, Sevda Özdağ

Turkish Journal of Zoology

The morphological characteristics of Micrommata virescens (Clerck, 1757), which is recorded for the first time in Turkey, are given.

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Development Of The Muskox Lungworm, Umingmakstrongylus Pallikuukensis (Protostrongylidae), In Gastropods In The Arctic, Susan J. Kutz, Eric P. Hoberg, John Nishi, Lydden Polley Jan 2002

Development Of The Muskox Lungworm, Umingmakstrongylus Pallikuukensis (Protostrongylidae), In Gastropods In The Arctic, Susan J. Kutz, Eric P. Hoberg, John Nishi, Lydden Polley

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Development of the muskox protostrongylid lungworm, Umingmakstrongylus pallikuukensis, in its slug intermediate host, Deroceras laeve, was investigated under field conditions in the Arctic. Every two weeks, from 19 June to 28 August 1997, groups of ten experimentally infected slugs were placed in tundra enclosures in a mesic sedge meadow near Kugluktuk, Nunavut, Canada. First-stage larvae (L1) infecting slugs on or before 17 July developed to third-stage larvae (L3) in 4–6 weeks. Intensity of L3 in slugs peaked at 6–8 weeks post infection (PI) and then progressively declined by 10, 12, and 48–50 weeks PI. Abundance of L3 in …

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Evidence For Infanticide In Bottlenose Dolphins Of The Western North Atlantic, Dale G. Dunn, Susan G. Barco, D. Ann Pabst, William A. Mclellan Jan 2002

Evidence For Infanticide In Bottlenose Dolphins Of The Western North Atlantic, Dale G. Dunn, Susan G. Barco, D. Ann Pabst, William A. Mclellan

Biological Sciences Faculty Publications

Nine bottlenose dolphin (Tursiops truncatus) calves that stranded in Virginia in 1996 and 1997 died of severe blunt-force trauma. Injuries were concentrated on the head and chest and multiple rib fractures, lung lacerations, and soft tissue contusions were prominent. Skeletal and/or soft tissue trauma occurred bilaterally in all of the calves. One had a bite wound across the left mandible that exhibited deep punctures consistent with the tooth placement in an adult bottlenose dolphin. The lesions were not compatible with predation, boat strike, fisheries interactions, rough-surf injury, or blast injury. However, they were similar to traumatic injuries described in stranded …

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Leptodactylus Silvanimbus, W. R. Heyer, Rafael O. De Sá, Sarah Muller Jan 2002

Leptodactylus Silvanimbus, W. R. Heyer, Rafael O. De Sá, Sarah Muller

Biology Faculty Publications

Adult Leptodactylus silvanimhus are of moderate sized, the head is about as wide as long, and the hind limbs are moderate in length (see Table; also see Heyer and Thompson 2000 for definitions of adult size and leg length categories for Leptodacrylus). The male vocal sac is single and internal. Male forearms are hypertrophied in larger individuals. Adult males have two black thumb spines on each hand and lack chest spines. Individuals lack dorsolateral folds. The toe tips are narrow, not expanded. Females have weakly developed lateral toe fringes and males either have lateral toe ridges or weakly developed fringes. …

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Relative Importance Of Food Items In Feeding Of Chondrostoma Regium Heckel, 1843, And Its Relation With The Time Of Annulus Formation, Aysun Gümüş, Mahmut Yilmaz, Nazmi̇ Polat Jan 2002

Relative Importance Of Food Items In Feeding Of Chondrostoma Regium Heckel, 1843, And Its Relation With The Time Of Annulus Formation, Aysun Gümüş, Mahmut Yilmaz, Nazmi̇ Polat

Turkish Journal of Zoology

In this study, we analyzed the relative importance of food items of Chondrostoma regium Heckel, 1843. A total of 145 individuals were sampled between April 1993 and March 1994 in Suat Uğurlu Dam Lake. Stomach content analysis was used to determine dietary composition. Relative measures of food item quantity were estimated by two different approaches: the Index of Relative Importance (IRI) and the Geometric Index of Importance (GII). The results from these indices were compared and the most reliable way of estimating dietary composition was discussed. Navicula, Cymbella and Synedra were the most frequently consumed organisms. As C. regium mostly …

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