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2011

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Articles 691 - 720 of 814

Full-Text Articles in Animal Sciences

Five Aquatic Oligochaeta Species New For The Fauna Of Montenegro, Aleksandra Jablonska, Vladimir Pesic Jan 2011

Five Aquatic Oligochaeta Species New For The Fauna Of Montenegro, Aleksandra Jablonska, Vladimir Pesic

Turkish Journal of Zoology

Five species of aquatic Oligochaeta new for Montenegro were recorded from various types of fresh waters. Marionina argentea (Michaelsen, 1889) was reported from a subterranean stream. Propappus volki Michaelsen, 1916, Rhyacodrilus coccineus (Vejdovsky, 1876), and Cognettia sphagnetorum (Vejdovsky, 1877) were found in epigean streams. Haplotaxis gordioides (Hartmann, 1821) appeared in both subterranean and epigean streams. The list of aquatic oligochaetes from Montenegro now encompasses 39 species.

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Review Of Palearctic And Australian Species Of Bootanomyia Girault 1915 (Hymenoptera: Torymidae: Megastigminae), With Descriptions Of New Species, Mi̇kdat Doğanlar Jan 2011

Review Of Palearctic And Australian Species Of Bootanomyia Girault 1915 (Hymenoptera: Torymidae: Megastigminae), With Descriptions Of New Species, Mi̇kdat Doğanlar

Turkish Journal of Zoology

The world species of Bootanomyia Girault (Hymenoptera: Chalcidoidea, Torymidae) are reviewed. Nine species are transferred from Megastigmus to Bootanomyia as new combinations: B. almusiensis (Doğanlar, 1989), B. dorsalis (Fabricius 1789), B. dumicola (Boucek 1982), B. habui (Kamijo, 1962), B. maculipennis (Yasumatsu and Kamijo, 1979), B. nipponicus (Yasumatsu and Kamijo, 1979), B. stigmatizans (Fabricious 1789), B. synophri (Mayr 1874), and B. zhaoi (Xu & He, 2003). Megastigmus bohemanii Ratzeburg, 1848 is reinstated as a species from synonymy under M. dorsalis Fabricius and transferred to Bootanomyia as B. bohemanii (Ratzeburg, 1848) (comb. and status n.). Seven species are described as new species: …

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Two New Species Of Zerconid Mites (Acari, Mesostigmata) From Honaz Mountain National Park (Turkey), Raşi̇t Urhan Jan 2011

Two New Species Of Zerconid Mites (Acari, Mesostigmata) From Honaz Mountain National Park (Turkey), Raşi̇t Urhan

Turkish Journal of Zoology

Two new species of zerconid mites, Zercon denizliensis sp.n. and Z. alattini sp.n., collected from Honaz Mountain National Park in Turkey are described and illustrated. Additionally, a key to the species of the genus Zercon known from Turkey is given.

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A New Eyeless Mite Species Of The Genus Eustigmaeus Berlese (Acari: Stigmaeidae) From Turkey, Sali̇h Doğan, Güldem Dönel, Sezgi̇n Özçeli̇k Jan 2011

A New Eyeless Mite Species Of The Genus Eustigmaeus Berlese (Acari: Stigmaeidae) From Turkey, Sali̇h Doğan, Güldem Dönel, Sezgi̇n Özçeli̇k

Turkish Journal of Zoology

A new eyeless mite species of the genus Eustigmaeus from Turkey, Eustigmaeus anophthalmus, is described and illustrated.

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Ants Of The Genus Camponotus Mayr, 1861 (Hymenoptera: Formicidae) In The Kaz Mountains, Turkey, With Descriptions Of Sexuals Of Camponotus Candiotes Emery, 1894 And Camponotus Ionius Emery, 1920, Celal Karaman, Ni̇hat Aktaç, Kadri̇ Kiran Jan 2011

Ants Of The Genus Camponotus Mayr, 1861 (Hymenoptera: Formicidae) In The Kaz Mountains, Turkey, With Descriptions Of Sexuals Of Camponotus Candiotes Emery, 1894 And Camponotus Ionius Emery, 1920, Celal Karaman, Ni̇hat Aktaç, Kadri̇ Kiran

Turkish Journal of Zoology

The Camponotus fauna of the Kaz Mountains was examined horizontally and vertically, from 175 to 1600 m a.s.l. Materials were collected from 20 different localities and 11 different habitats between 2001 and 2003. In all, 14 species belonging to 3 subgenera (Colobopsis Mayr, Myrmentoma Forel, and Tanaemyrmex Ashmead) were found. The hitherto unknown sexuals of C. candiotes Emery and C. ionius Emery are described for the first time.

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Scaphopod Species (Mollusca) Of The Turkish Levantine And Aegean Seas, Bi̇lal Öztürk Jan 2011

Scaphopod Species (Mollusca) Of The Turkish Levantine And Aegean Seas, Bi̇lal Öztürk

Turkish Journal of Zoology

An examination of benthic material collected from different depths (0-875 m) and habitats along the Turkish Levantine and Aegean seas between 1996 and 2008 has resulted in the identification of 819 scaphopod specimens, belonging to 10 species: Antalis dentalis (Linneaus, 1758), Antalis inaequicostata (Dautzenberg, 1891), Antalis panorma (Chenu, 1843), Antalis rossati (Caprotti, 1966), Antalis vulgaris (da Costa, 1778), Fustiaria rubescens (Deshayes, 1825), Entalina tetragona (Brocchi, 1814), Pulsellum lofotense (M. Sars, 1865), Cadulus jeffreysi (Monterosato, 1875), and Dischides politus (S. Wood, 1842). Of these, P. lofotense and C. jeffreysi are new records for the Aegean molluscan fauna and A. panorma and …

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Histological Investigation Of The Rectal Sac In Bombyx Mori L., Gamze Turgay İzzetoğlu, Ayla Öber Jan 2011

Histological Investigation Of The Rectal Sac In Bombyx Mori L., Gamze Turgay İzzetoğlu, Ayla Öber

Turkish Journal of Zoology

The rectal sac (Rs) is formed by enlargement of the rectal portion of the hindgut in Bombyx mori. The Rs consists of epithelium, connective tissue, and many rectal pads (Rps). Rps have a cortex and medulla. In the medulla 2-5 pyramidal epithelial cells synthesize proteinic secretory material (Ps), and then this substance localizes within epithelial cells and connective tissue. It was thought that lipoid secretory material (Ls) was synthesized by epithelial cells in the midgut and was delivered to the Rs; however, Ls was localized in the epithelium of the Rs and in the periphery of Rps. Both secretions were …

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Hematological Reference Intervals Of Some Snake Species In Turkey, Murat Tosunoğlu, Çi̇ğdem Gül, Ni̇lgün Yilmaz, Hüseyi̇n Topyildiz Jan 2011

Hematological Reference Intervals Of Some Snake Species In Turkey, Murat Tosunoğlu, Çi̇ğdem Gül, Ni̇lgün Yilmaz, Hüseyi̇n Topyildiz

Turkish Journal of Zoology

In this study, some blood parameters were studied in 7 distinct snake species (Dolichophis caspius, Eirenis modestus, Malpolon monspessulanus, Natrix natrix, Platyceps rubriceps, Telescopus fallax, and Typhlops vermicularis) of the families Colubridae and Typhlopidae, collected from various regions of Turkey. A total of 7 hematologic parameters, namely red blood cell count (RBC), white blood cell count (WBC), hematocrit value (HCT), hemoglobin concentration (Hb), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), and mean corpuscular hemoglobin concentration (MCHC), were examined. It was detected that Platyceps rubriceps had the highest erythrocyte count and the lowest MCV value among the species examined, Telescopus …

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The Structure And Defensive Efficacy Of Glandular Secretion Of The Larval Osmeterium In Graphium Agamemnon Agamemnon Linnaeus, 1758 (Lepidoptera: Papilionidae), Jagannath Chattopadhyay Jan 2011

The Structure And Defensive Efficacy Of Glandular Secretion Of The Larval Osmeterium In Graphium Agamemnon Agamemnon Linnaeus, 1758 (Lepidoptera: Papilionidae), Jagannath Chattopadhyay

Turkish Journal of Zoology

Histomorphological study of the larval (final instar) osmeterium gland in Graphium agamemnon agamemnon Linnaeus shows that each fully protruded Y-shaped osmeterium is composed of 2 elongated hollow tubular arms, which arise from a basal peduncle. The surface of the osmeterium has irregular folds, and papillae arise from some cells. There is an oval opening (gland pore, structurally less complicated than in other evolved species) in the proximal second seventh of the segment on each tubular arm on its posterior face. Histologically, 2 main types of secretory cells can be observed (excluding the muscle fiber cells and supporting cells): i) ellipsoid …

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Length-Weight Relationships Of Ten Fish Species From The Bulgarian Black Sea Waters, Maria Yankova, Danail Pavlov, Violin Raykov, Veselina Mihneva, Georghe Radu Jan 2011

Length-Weight Relationships Of Ten Fish Species From The Bulgarian Black Sea Waters, Maria Yankova, Danail Pavlov, Violin Raykov, Veselina Mihneva, Georghe Radu

Turkish Journal of Zoology

Length-weight relationships (LWRs) of 16,842 specimens of fish caught in the Bulgarian Black Sea waters, covering 9 families, 10 genera, and 10 species, were studied. Spiny dogfish (Squalus acanthias L.), thornback ray (Raja clavata L.), sprat (Sprattus sprattus L.), pontic shad (Alosa immaculata Eichwald), anchovy (Engraulis encrasicolus L.), whiting (Merlangius merlangus euxinus Pallas), horse mackerel (Trachurus mediterraneus Aleev), bonito (Sarda sarda Bloch), round goby (Neogobius melanostomus Pallas), and turbot (Psetta maxima L.) were collected from May 2006 to December 2008. The fishes were caught by different fishing techniques, such as gill net, trawl net, and trap nets. The slope or …

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Arcyptera Microptera (Fischer De Waldheim, 1833) (Orthoptera: Acrididae) Has Become Extinct In The Czech Republic, Jaroslav Holusa Jan 2011

Arcyptera Microptera (Fischer De Waldheim, 1833) (Orthoptera: Acrididae) Has Become Extinct In The Czech Republic, Jaroslav Holusa

Turkish Journal of Zoology

In the past, the grasshopper Arcyptera microptera microptera was present in the Czech Republic on the northern edge of its range. A stable population was known only in a single location (Pouzdrany Steppe-Kolby National Nature Reserve). The abundance of A. microptera microptera at this location declined during the 20th century, and only a few specimens from this location exist in the depositories of museums in the Czech Republic. At each of 2 other locations (Kobyli and the Kamenny vrch u Kurdejova Nature Reserve), only a single male was discovered in the past. In several extensive surveys conducted in the Czech …

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Reproductive Biology And Age Determination Of Garra Rufa Heckel, 1843 (Actinopterygii: Cyprinidae) In Central Iran, Masoud Abedi, Amir Houshang Shiva, Hamid Mohammadi, Rokhsareh Malekpour Jan 2011

Reproductive Biology And Age Determination Of Garra Rufa Heckel, 1843 (Actinopterygii: Cyprinidae) In Central Iran, Masoud Abedi, Amir Houshang Shiva, Hamid Mohammadi, Rokhsareh Malekpour

Turkish Journal of Zoology

Some aspects of the reproductive biology of Garra rufa Heckel, 1843, a native cyprinid fish species from the Armand stream in Chaharmahal-o-Bakhtiari province, central Iran, were investigated by regular monthly collections throughout 1 year. A significant relationship between length and weight and the isometric growth pattern were observed in this fish. There were no significant differences in the total number of male and female specimens. The population of this cyprinid fish had a narrow age range of 0-4 years, and the maximum number of samples belonged to the age group of 2.01-3 years. Based on the patterns of gonadosomatic and …

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The Influence Of Photoperiod On Size And Development Of Ovarioles In Insecticide Resistant And Susceptible Strains Of The House Fly Musca Domestica L. (Diptera: Muscidae), Seli̇m Süalp Çağlar, İsmai̇l Kudret Sağlam, Muhammet Mustafa Akiner Jan 2011

The Influence Of Photoperiod On Size And Development Of Ovarioles In Insecticide Resistant And Susceptible Strains Of The House Fly Musca Domestica L. (Diptera: Muscidae), Seli̇m Süalp Çağlar, İsmai̇l Kudret Sağlam, Muhammet Mustafa Akiner

Turkish Journal of Zoology

The ovariole development of laboratory-reared insecticide resistant and sensitive strains of the house fly, Musca domestica L. (Diptera: Muscidae) under different photoperiod regimes was examined. Flies were reared under laboratory conditions of 75 ± 5% RH, 25 ± 1 °C and 0:24, 6:18, 12:12, and 18:6 h L:D photoperiods. Each day, 20 female flies were collected from a cohort of females that had emerged on the same date. Ovarioles were dissected from the collected adults and microscopically examined to determine overall length and developmental stage. For the resistant strain, development was most rapid under the photoperiod regimes with more hours …

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Taxonomic Status Of Myotis Myotis (Borkhausen, 1797) And Myotis Blythii (Tomes, 1857) In Turkey(Mammalia: Chiroptera)*, Nursel Aşan, İrfan Albayrak Jan 2011

Taxonomic Status Of Myotis Myotis (Borkhausen, 1797) And Myotis Blythii (Tomes, 1857) In Turkey(Mammalia: Chiroptera)*, Nursel Aşan, İrfan Albayrak

Turkish Journal of Zoology

Morphometrical, biological, ecological, and karyological data of 156 Myotis myotis and 149 M. blythii specimens collected from various provinces of Turkey between 1974 and 2007 were evaluated. Specimens from Turkish Thrace were referred to as M. m. myotis and the Mediterranean part as M. m. macrocephalicus. Specimens from the rest of Anatolia were assigned to an intermediate form. Due to a steady increase in body and cranial size detected in Myotis blythii from western to eastern Anatolia, we did not assign a subspecific name for the M. blythii populations in Turkey. In addition, body and cranial measurements of this species …

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Distribution Of Chromosomal Forms Of Nannospalax Nehringi (Satunin, 1898) (Rodentia: Spalacidae) In Çankırı And Çorum Provinces, Turkey, Mustafa Sözen, Kamuran Çatakli, Fati̇h Eroğlu, Ferhat Matur, Murat Sevi̇ndi̇k Jan 2011

Distribution Of Chromosomal Forms Of Nannospalax Nehringi (Satunin, 1898) (Rodentia: Spalacidae) In Çankırı And Çorum Provinces, Turkey, Mustafa Sözen, Kamuran Çatakli, Fati̇h Eroğlu, Ferhat Matur, Murat Sevi̇ndi̇k

Turkish Journal of Zoology

Mole rats have adapted to living underground and have a wide range chromosomal variation in Turkey, ranging between 2n = 36 and 2n = 60. This study was performed on the subterranean mole rats of the Nannospalax nehringi (Nehring, 1898), sampled around Çankırı and Çorum provinces in central Anatolia, and the karyotypes of 91 specimens across 38 localities were analyzed. Different chromosomal forms that have the same 2n values were assigned letters according to their geographic locations in Turkey: C for central forms, N for northern forms, S for southern forms, E for eastern forms, and W for western forms. …

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New Records Of Staphylinidae From Turkey, Syria, And Iran (Insecta: Coleoptera), Si̇nan Anlaş, Önder Deveci̇ Jan 2011

New Records Of Staphylinidae From Turkey, Syria, And Iran (Insecta: Coleoptera), Si̇nan Anlaş, Önder Deveci̇

Turkish Journal of Zoology

Additional records of Staphylinidae species from Turkey, Syria, and Iran are presented, including the first country records of Proteinus laevigatus Hochhuth, 1872 from Turkey, Astenus melanurus (Küster, 1853), and Luzea nigritula (Kraatz, 1857) from Syria, and Astenus procerus (Gravenhorst, 1806) from Iran.

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The Spatial And Temporal Distributions Of Waterbirds In Lakes Akşehir-Eber And Lake Köyceğiz In Western Anatolia, Turkey - A Comparative Analysis, Fulya Saygili, Nuri̇ Yi̇ği̇t, Şafak Bulut Jan 2011

The Spatial And Temporal Distributions Of Waterbirds In Lakes Akşehir-Eber And Lake Köyceğiz In Western Anatolia, Turkey - A Comparative Analysis, Fulya Saygili, Nuri̇ Yi̇ği̇t, Şafak Bulut

Turkish Journal of Zoology

The waterbirds at 2 wetlands (Lakes Akşehir-Eber and Köyceğiz) in western Turkey were compared to determine their spatial and temporal distributions along with their habitat characteristics. The waterbirds were evaluated according to whether they were residents, winter migrants, summer migrants, or transit migrants and were assigned to foraging behavior groups. At Lakes Akşehir-Eber, 67 waterbird species belonging to 17 families and 9 orders were observed, while at Lake Köyceğiz 42 species belonging to 14 families and 9 orders were recorded. The waterbird fauna in both lake systems is composed of the following bird groups in the same order of occurrence: …

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The Herpetofauna Of The Sultan Mountains (Afyon-Konya-Isparta), Turkey, Murat Afsar, Cemal Varol Tok Jan 2011

The Herpetofauna Of The Sultan Mountains (Afyon-Konya-Isparta), Turkey, Murat Afsar, Cemal Varol Tok

Turkish Journal of Zoology

In this study, 29 reptile and amphibian species were recorded in 25 different localities in the Sultan Mountains. Of these, 5 were anurans, 1 was a tortoise, 1 was a turtle, 11 were lizards, and 11 were snakes. A chorotype classification of the species recorded in the Sultan Mountains is also given.

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Two New Species, Bracon (Lucobracon) Kuzguni Sp. N. And Bracon (Lucobracon) Breviradius Sp. N., From Turkey (Hymenoptera: Braconidae: Braconinae), Ahmet Beyarslan Jan 2011

Two New Species, Bracon (Lucobracon) Kuzguni Sp. N. And Bracon (Lucobracon) Breviradius Sp. N., From Turkey (Hymenoptera: Braconidae: Braconinae), Ahmet Beyarslan

Turkish Journal of Zoology

During studies on the Braconidae fauna of the Black Sea, Central Anatolian and Eastern Anatolian regions of Turkey 2 new species, Bracon (Lucobracon) kuzguni sp. n. and Bracon (Lucobracon) breviradius sp. n., were recorded and described. Important morphological diagnostic characters are figured and they are compared with the related species, B.(L.) triangularis Nees, 1834 and B. (L.) brachycerus Thomson, 1892 respectively.

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The Fauna And Systematic Of The Genus Terellia R-D., 1830 (Diptera: Tephritidae) With A Key To The Species Of Terellia In Turkey, Murat Kütük, Mehmet Yaran Jan 2011

The Fauna And Systematic Of The Genus Terellia R-D., 1830 (Diptera: Tephritidae) With A Key To The Species Of Terellia In Turkey, Murat Kütük, Mehmet Yaran

Turkish Journal of Zoology

This study is based on the Terellia species collected from 27 provinces of Turkey during 1999-2006. The locality, host plants (including new records), and figures of the wing pattern of each species are given. An identification key to all 15 species of Terellia known from Turkey is presented and their distribution in Turkey and other countries summarized.

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Cytogenetic Characteristics Of Microtus Dogramacii (Mammalia: Rodentia) Around Amasya, Turkey, Zülal Atli Şekeroğlu, Haluk Kefeli̇oğlu, Vedat Şekeroğlu Jan 2011

Cytogenetic Characteristics Of Microtus Dogramacii (Mammalia: Rodentia) Around Amasya, Turkey, Zülal Atli Şekeroğlu, Haluk Kefeli̇oğlu, Vedat Şekeroğlu

Turkish Journal of Zoology

The banding patterns of chromosomes of Microtus dogramacii, a recently described vole species endemic to Turkey, were studied. G-, C-, and Ag-NOR-banded patterns of this species are reported here for the first time. In this study, 2 karyotypical forms were determined. Each form had the same diploid chromosome numbers (2n = 48), but possessed different autosomal morphologies. For this reason, the samples collected from the research area were karyologically separated into 2 groups, cytotype-1 (NF = 50) and cytotype-2 (NF = 52). All chromosomes possessed centromeric/pericentromeric heterochromatin bands in both karyotypical forms. It was shown that the acrocentric chromosomes of …

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The External Morphology Of The Gill Of Patella Caerulea L. (Mollusca: Gastropoda), Deni̇z Akşi̇t, Beri̇a Falakali Mutaf Jan 2011

The External Morphology Of The Gill Of Patella Caerulea L. (Mollusca: Gastropoda), Deni̇z Akşi̇t, Beri̇a Falakali Mutaf

Turkish Journal of Zoology

Gross morphology of the gill was studied using a scanning electron microscope (SEM) in order to associate it with its function in genus Patella. Secondary gills consisted of a single layer of gill folds, which appear mostly as triangular leaflets in scanning electron micrographs. The lamellae showed a prominent thickening on the free margin and horizontal swellings, which bear a series of ciliary structures on the frontal surface, as well as disperse bunches. They differed from the discocilia and, because chemoreception has been attributed to them in the absence of an osphradium, they are thought to contribute to the primary …

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The First Record Of Family Selenopidae (Arachnida: Araneae) From Turkey, Kadi̇r Buğaç Kunt, Serdar Tezcan, Ersen Aydin Yağmur Jan 2011

The First Record Of Family Selenopidae (Arachnida: Araneae) From Turkey, Kadi̇r Buğaç Kunt, Serdar Tezcan, Ersen Aydin Yağmur

Turkish Journal of Zoology

The family Selenopidae and selenopid spider Selenops radiatus Latreille, 1819 are recorded in Turkey for the first time.

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Shorebirds In The Gediz Delta (İzmir, Turkey): Breeding And Wintering Abundances, Distributions, And Seasonal Occurrences, Ortaç Onmuş, Mehmet Siki Jan 2011

Shorebirds In The Gediz Delta (İzmir, Turkey): Breeding And Wintering Abundances, Distributions, And Seasonal Occurrences, Ortaç Onmuş, Mehmet Siki

Turkish Journal of Zoology

The present study describes breeding and wintering abundances, distributions, and seasonal occurrences of shorebirds (waders) in the Gediz Delta (İzmir-Turkey). Breeding abundance and distribution, and wintering abundance data were collected by carrying out breeding bird surveys in 2002 and 2006, and waterbird censuses between 1990 and 2007, respectively. Seasonal occurrences were determined using 432 different observations corresponding to 5043 different records between 1990 and 2007. Thirty-eight wader species were observed with a weekly average of 22.5 ± 4.0. Breeding evidence was obtained for 9 species in 2002 and 8 species in 2006. Average number of waders identified during yearly mid-winter …

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Description Of Spermatheca And Eggs Of Eurygaster Austriaca (Schrank, 1778) (Heteroptera: Scutelleridae),Based On Optical And Scanning Electron Microscopy, Selami̇ Candan, Zeki̇ye Suludere, Mustafa Güllü Jan 2011

Description Of Spermatheca And Eggs Of Eurygaster Austriaca (Schrank, 1778) (Heteroptera: Scutelleridae),Based On Optical And Scanning Electron Microscopy, Selami̇ Candan, Zeki̇ye Suludere, Mustafa Güllü

Turkish Journal of Zoology

Spermatheca and egg morphology of Eurygaster austriaca (Schrank, 1778) were studied by optical and scanning electron microscopy (SEM). The spermatheca of E. austriaca is characterized by a spermathecal bulb, a pumping region, distal and proximal flanges and ducts, and a genital chamber. Each female was shown to deposit 14 green eggs on average in mass. The spherical eggs averaged 1.05 ± 0.05 mm in diameter. The first external evidence of embryonic development was the appearance of 2 red eye spots opposite each other beneath operculum followed by the appearance of a blackish T-shaped egg-burster between the eye spots. The thickened …

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The First Record Of Cladocora Caespitosa (Linnaeus, 1767) (Anthozoa, Scleractinia) From The Marmara Sea, Hasan Bariş Özalp, Mustafa Alparslan Jan 2011

The First Record Of Cladocora Caespitosa (Linnaeus, 1767) (Anthozoa, Scleractinia) From The Marmara Sea, Hasan Bariş Özalp, Mustafa Alparslan

Turkish Journal of Zoology

The Scleractinian Cladocora caespitosa is reported for the first time from the Marmara Sea, Turkey. Five colonies of the elliptical Cladocora caespitosa were discovered at 7 m by scuba divers around Posidonia oceanica beds colonising a substrate of sand and rock. The colonies' characteristics were recorded with underwater apparatus with a close-up device and with a video system. The present paper provides the new updated area of the species on the Turkish coast.

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Alterations In Ion Levels Of Freshwater Fish Oreochromis Niloticus Following Acute And Chronic Exposures To Five Heavy Metals, Gülüzar Atli, Mustafa Canli Jan 2011

Alterations In Ion Levels Of Freshwater Fish Oreochromis Niloticus Following Acute And Chronic Exposures To Five Heavy Metals, Gülüzar Atli, Mustafa Canli

Turkish Journal of Zoology

Freshwater fish, Oreochromis niloticus, were individually exposed to 0, 0.1, 0.5, 1.0, and 1.5 µg/mL of Cu^{2+}, Cd^{2+}, Cr^{6+}, Ag^+, and Zn^{2+} for 96 h (acute) and 0.05 µg/mL concentrations of the same metals for 0, 5, 10, 20, and 30 days (chronic). Following each period, metal accumulation and ion levels (Na^+, K^+, Ca^{+2}, and Mg^{+2}) were measured in the gills, kidneys, and muscles. Except for Ag^+, none of the metals killed the fish within 30 days. Silver killed all the fish within 16 days. With the exceptions of Ag^+ and Cr^{6+}, as their levels were below detection limits, metal …

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Descriptive Characteristics Of Haemopoietic Cell Lineages In A Facultative Air Breathing Fish Clarias Batrachus (L.), Krishna Gangopadhyay, Sumit Homechaudhuri Jan 2011

Descriptive Characteristics Of Haemopoietic Cell Lineages In A Facultative Air Breathing Fish Clarias Batrachus (L.), Krishna Gangopadhyay, Sumit Homechaudhuri

Turkish Journal of Zoology

Haemopoietic tissues of the head kidney of Clarias batrachus were studied for morphometric analysis and ultrastructural descriptions of the erythropoietic and leucopoietic cell populations. Eight successive steps of developing erythrocytes from small lymphoid haemoblasts (SLHs) to mature erythrocytes (MEs) were distinguished. Progressive loss of RNA and synthesis of haemoglobin during haemopoiesis were coupled with denser nucleus and changes in cellular shapes. Transmission electron microscopy aided in clear distinction between cell lineages in the development of erythrocytes, granulocytes, and lymphocytes. Ultrastructural analysis of the pronephric stromal cells forming adherent multilayer of haemopoietic microenvironment was explicit in describing their ability to promote …

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Phylogeography Of Northern Populations Of The Black-Tailed Rattlesnake (Crotalus Molossus Baird And Girard, 1853) With The Revalidation Of C. Ornatus Hallowell, 1854, Christopher Anderson Jan 2011

Phylogeography Of Northern Populations Of The Black-Tailed Rattlesnake (Crotalus Molossus Baird And Girard, 1853) With The Revalidation Of C. Ornatus Hallowell, 1854, Christopher Anderson

Open Access Theses & Dissertations

The black-tailed rattlesnake (Crotalus molossus Baird and Girard, 1853) is a wide-ranging species complex with representatives from the southwestern United States through the highlands of central and southern Mexico. The systematics of this group has received little attention and in the past six decades only two taxonomic revisions have been proposed (the transfer of C. basiliscus oaxacus to C. molossus and the elevation of C. m. estebanensis to full species). However, a recent revision of the Neotropical rattlesnakes (C. durissus and C. simus) recovered a polyphyletic C. molossus. Sequenced data were obtained from three mitochondrial genes …

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Comparative Production Of Channel Catfish And Channel × Blue Hybrid Catfish Subjected To Two Minimum Dissolved Oxygen Concentrations, Bartholomew W. Green, Steven D. Rawles Jan 2011

Comparative Production Of Channel Catfish And Channel × Blue Hybrid Catfish Subjected To Two Minimum Dissolved Oxygen Concentrations, Bartholomew W. Green, Steven D. Rawles

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

The effect of daily minimum dissolved oxygen (DO) concentration on the growth and yield of channel catfish Ictalurus punctatus and channel catfish hybrids (female channel catfish × male blue catfish I. furcatus) sharing the Jubilee strain of channel catfish as the maternal parent was evaluated in a 234-d study in sixteen 0.1-ha earthen ponds (15,113 fish/ha). Ponds were managed to maintain a minimum DO concentration of 25% or 50% of saturation. The total consumption of 32%-protein feed at the high and low DO concentrations was 12,973 and 10,262 kg/ha, respectively, for channel catfish and 12,805 and 11,592 kg/ha, …

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