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Articles 1891 - 1920 of 2109
Full-Text Articles in Zoology
Two New Records Of Nenteriaoudemans, 1915 (Acari: Uropodina: Trematuridae) For Turkey, Durmuş Ali̇ Bal, Muhli̇s Özkan
Two New Records Of Nenteriaoudemans, 1915 (Acari: Uropodina: Trematuridae) For Turkey, Durmuş Ali̇ Bal, Muhli̇s Özkan
Turkish Journal of Zoology
Two species of Nenteria, collected from Erzincan plain, Nenteria styliferaand Nenteria stammeri, are new records for the fauna of Turkey. Their morphological features were re-examined and diagrams of them were drawn. In addition, their zoogeographical distribution is given.
A Systematic Study On The Otolith Characters Of Sparidae (Pisces) In The Bay Of İzmir (Aegean Sea), H. Tuncay Kinacigi̇l, Okan Akyol, Gülnur Meti̇n, Hülya Saygi
A Systematic Study On The Otolith Characters Of Sparidae (Pisces) In The Bay Of İzmir (Aegean Sea), H. Tuncay Kinacigi̇l, Okan Akyol, Gülnur Meti̇n, Hülya Saygi
Turkish Journal of Zoology
The otolith morphologies of 13 species belonging to the Sparidae family collected from the Bay of İzmir (Aegean Sea) were examined separately and the characteristics were drawn. The values obtained from measurements are given in the 95% confidence interval. With discriminant analysis, the groups were formed depending on the data collected. As a result of this analysis, it is possible to identify the species from the Sparidae family by the otolith characters.
Taxonomy And Distribution Of The White Toothed Shrews Crocidura)(Soricidae: Insectivora: Mammalia) Of Turkey, Coşkun Tez
Taxonomy And Distribution Of The White Toothed Shrews Crocidura)(Soricidae: Insectivora: Mammalia) Of Turkey, Coşkun Tez
Turkish Journal of Zoology
A total of 359 samples were collected from different geographical regions in Turkey and the species boundaries of white toothed shrews (genus Crocidura) in Turkey were defined using morphological and karyological characteristics. According to these characteristics, it was determined that Crocidura leucodon with karyotype of 2n = 28 and FN = 56 and Crocidura suaveolens with karyotype of 2n = 40 and FN =50 are distributed in Turkey. In both species, the shape of the skull, the shapes and positions of incisive (I 1 ), premolar (P 4 ), molar (M 3 ), tail length, dorsal and ventral side colours …
A Preliminary Study On The Ostracoda (Crustacea) Fauna Of Lake Beyşehir, Selçuk Altinsaçli, Mustafa Kiliç, Songül Altinsaçli
A Preliminary Study On The Ostracoda (Crustacea) Fauna Of Lake Beyşehir, Selçuk Altinsaçli, Mustafa Kiliç, Songül Altinsaçli
Turkish Journal of Zoology
The material was collected in July and September 1997 from 15 stations on Lake Beyßehir. A total of 15 species ( Ilyocypris biplicata, Ilyocypris gibba, Ilyocypris bradyi, Candona neglecta, Pseudocandona compressa, Prionocypris zenkeri, Eucypris virens, Heterocypris rotundata, Heterocypris incongruens, Cypria ophtalmica, Physocypria kraepelini, Cypridopsis vidua, Potamocypris zschokkei, Psychrodromus olivaceus, Darwinula stevensoni) belonging to 12 genera were determined. Of these, Heterocyprisrotundatais new addition to the Ostracoda fauna of Turkey.
Ultrastructure Of The Cortex Of The Rumen Ciliate Ophryoscolex Purkynjei Stein, 1858 (Entodiniomorphida: Ophryoscolecidae), Gürsel Ergen, Bayram Göçmen, Beri̇a Falakali Mutaf
Ultrastructure Of The Cortex Of The Rumen Ciliate Ophryoscolex Purkynjei Stein, 1858 (Entodiniomorphida: Ophryoscolecidae), Gürsel Ergen, Bayram Göçmen, Beri̇a Falakali Mutaf
Turkish Journal of Zoology
The ultrastructure of the cortex of Ophryoscolex purkynjei,an entodiniomorphid ciliate obtained from domesticated cattle rumens, was studied and found to have five layers. A particulate and/or filamentous glycocalyx layer, triple membrane layer, homogeneous epiplasmic layer with very fine grains, microtubular layer characterized with a double row of microtubule bundles each containing at most 6 units, and a compact microfilamentous layer were identified. In addition, scarce and disorganized kinetosomes and related microtubules were found to lie underneath all of these. These observations are discussed with reference to the findings of previous studies of other entodiniomorphid ciliates.
Ultrastructural Features Of The Intrinsic Lingual Muscles In The Frog, Rana Ridibunda, Mukaddes Eşrefoğlu, Özgen Vuraler
Ultrastructural Features Of The Intrinsic Lingual Muscles In The Frog, Rana Ridibunda, Mukaddes Eşrefoğlu, Özgen Vuraler
Turkish Journal of Zoology
The ultrastructural features of the intrinsic lingual muscles in the frog were investigated. The pieces obtained from the anterior part of the tongue were fixed in 3% gluteraldehyde and postfixed in 0.1% osmium tetroxide. Ultrathin sections stained with uranyl acetate and lead citrate were examined in a JEOL-100SX electron microscope. The muscle fibers were irregular in shape. The sarcoplasm was occupied largely by the myofibrils. In the same muscle fiber, longitudinal, transverse and oblique sections of the myofibrils were observed. Thus, regular transverse striation was prominent in some areas. In these areas, Z lines, I bands and A bands were …
The Influence Of The Dictyocaulus Filaria On The Phospholipid And Fatty Acid Composition In The Blood Of Sheep, G. M. Bastarbekova, A. E. Kuchbaev, D. A. Azimov
The Influence Of The Dictyocaulus Filaria On The Phospholipid And Fatty Acid Composition In The Blood Of Sheep, G. M. Bastarbekova, A. E. Kuchbaev, D. A. Azimov
Turkish Journal of Zoology
This paper provides results of an analysis of phospholipids (PL) and their fatty acid (FA) content in the blood of sheep infected by the nematode Dictyocaulus filaria. Significantly high level of arachidonic acid in the lysophospholipids, and low levels of docozangexenic acid in the phospholipids were obtained, which indicate structural and functional disorders of cellular membranes in blood during dictyocaulosis. These disorders are regarded as metabolic criteria for an assessment of the relation between parasite and host.
The Efficacy Of A Phytopesticide In Comparison With Perfekthion Against Sucking Pests Of Cotton, Mohammad Aslam, Syed Naim-Ul-Hasan Naqvi
The Efficacy Of A Phytopesticide In Comparison With Perfekthion Against Sucking Pests Of Cotton, Mohammad Aslam, Syed Naim-Ul-Hasan Naqvi
Turkish Journal of Zoology
The efficacy of neem product (phytopesticide FWB) was compared with perfekthion against sucking pests of cotton (jassids, thrips and whiteflies). Perfekthion proved to be more toxic but its effect lasted for 4 days only while neem product (FWB) was less toxic but its effect lasted for 6 days. Moreover, neem product is much safer and non-polluting.
Effect Of Temperature On The Toxicity Of Zinc, Copper And Lead To The Freshwater Amphipod Gammarus Pulex Pulex(L., 1758), Levent Bat, Mehmet Akbulut, Mehmet Çulha, Ayşe Gündoğdu, Hasan Hüseyi̇n Satilmiş
Effect Of Temperature On The Toxicity Of Zinc, Copper And Lead To The Freshwater Amphipod Gammarus Pulex Pulex(L., 1758), Levent Bat, Mehmet Akbulut, Mehmet Çulha, Ayşe Gündoğdu, Hasan Hüseyi̇n Satilmiş
Turkish Journal of Zoology
This study showed the effect of temperature on copper, zinc and lead toxicity to the freshwater amphipod Gammarus pulex pulex. 96-h LC 50 values were estimated for copper, zinc and lead in this species using the static bioassay method. Increase in the concentration of copper, zinc and lead decreased the survival of the animals. The LC 50 values of Cu, Zn and Pb for Gammarus pulex pulexranged from 0.028 to 0.080, 5.2 to 12.1 and 11.2 to 23.2 mg/l, respectively. The results indicated that Cu was more toxic to the species, followed by Zn and Pb. The results were compared …
The Diel Vertical Distribution Of Zooplankton In The Southeast Black Sea, Funda Erkan, Ali̇ Cemal Gücü, Julia Zagorodnyaya
The Diel Vertical Distribution Of Zooplankton In The Southeast Black Sea, Funda Erkan, Ali̇ Cemal Gücü, Julia Zagorodnyaya
Turkish Journal of Zoology
The diel changes in the vertical distribution of zooplankton in the southeast Black Sea were described in this study. The zooplankton were sampled using two different sampling methods throughout one day in October 1996 and July 1997 at the same station. The zooplankton counts, the length measurements and biomass estimates showed that the zooplankton in the southeast Black Sea is dominated by small organisms, among which Noctiluca scintillans is the dominant species. In the vertical distribution of zooplankton, three groups were observed in different layers. Calanus euxinus and Pseudocalanus elongatus showed a clear vertical migration pattern. Conventional measurements (settling volume, …
Elimination Of Essential (Cu, Zn) And Non-Essential (Cd, Pb) Metals From Tissues Of A Freshwater Fish Tilapia Zilli, Mustafa Kalay, Mustafa Canli
Elimination Of Essential (Cu, Zn) And Non-Essential (Cd, Pb) Metals From Tissues Of A Freshwater Fish Tilapia Zilli, Mustafa Kalay, Mustafa Canli
Turkish Journal of Zoology
Tilapia zilli were exposed to the same concentration (1 mg/L) of essential (Cu, Zn) and non-essential (Cd, Pb) metals for 10 days so that these metals would accumulate in the liver, gill, brain and muscle tissues. Subsequently, the animals were transferred to uncontaminated water for a period of elimination, during which samples were taken at days 1, 7, 15 and 30. Cadmium and lead accumulated in all the tissues and the tissue concentrations increased many times compared to the levels of these metals in the control fish (
Seasonal Variations Of Demersal Fish Composition In Gülbahçe Bay (İzmir Bay), Cengi̇z Meti̇n, Zafer Tosunoğlu, Adnan Tokaç, Altan Lök, Celaletti̇n Aydin, Hakan Kaykaç
Seasonal Variations Of Demersal Fish Composition In Gülbahçe Bay (İzmir Bay), Cengi̇z Meti̇n, Zafer Tosunoğlu, Adnan Tokaç, Altan Lök, Celaletti̇n Aydin, Hakan Kaykaç
Turkish Journal of Zoology
In the present study, the seasonal variations in demersal catch composition in Gülbahçe Bay were investigated by trawl sampling. Species identification of the samples was carried out at class, family and species levels. The results of this study were compared to those of previous studies carried out in the same area and it was concluded that red mullet, which is the dominant species of Gülbahçe Bay, has lost this characteristic because of overfishing and marine pollution. For this reason, fishing activities and the discharge of domestic waste waters should be strictly controlled.
On The Polymorphic Meadow Spittlebug, Philaenus Spumarius (L.) (Homoptera: Cercopidae), Selçuk Yurtsever
On The Polymorphic Meadow Spittlebug, Philaenus Spumarius (L.) (Homoptera: Cercopidae), Selçuk Yurtsever
Turkish Journal of Zoology
Due to its interesting biological aspects, the meadow spittlebug Philaenus spumarius has received great attention from biologists for decades. It has been one of the extensively studied species in ecology and genetics. This homopteran insect shows very high habitat diversity and therefore has a wide global distribution. Adults exhibit a heritable colour/pattern polymorphism on the dorsal surface throughout its range. A similar colour/pattern variation also occurs in certain ventral parts. Recent laboratory studies have dealt with its polyandrous aspect that is, females may mate several times with different males and the offspring of a single female may be fathered, therefore, …
A Study On The Pelagic And Demersal Fishes Of İskenderun Bay, Nuri̇ Başusta, Ünal Erdem
A Study On The Pelagic And Demersal Fishes Of İskenderun Bay, Nuri̇ Başusta, Ünal Erdem
Turkish Journal of Zoology
This study was conducted in İskenderun Bay, Mediterranean Sea, between December 1994 and November 1996. Systematic of the fish species inhabiting the bay were examined. Out of 145 species of 111 genera of 67 families there were 19 species belonging to the Chondrictyes and 126 species belonging to the Osteictyes. Of all these species, 22 were Lessepsian migrant fish species.
Age Determination Methods Of Solea Lascaris (Risso, 1810) Inhabiting The Black Sea, Derya Bostanci, Nazmi̇ Polat
Age Determination Methods Of Solea Lascaris (Risso, 1810) Inhabiting The Black Sea, Derya Bostanci, Nazmi̇ Polat
Turkish Journal of Zoology
This study was conducted to determine the most reliable bony structures for ageing Solea lascaris inhabiting the Black Sea. The relations between four different bony structures are presented in tables and figures by scale, vertebra, otolith and broken burnt-otolith ages of 215 samples collected between October 1996 and October 1997. It is concluded the broken-burnt otolith is the most reliable structure for ageing this species. The Von Bertalanffy growth equation was estimated from the broken-burnt otolith age as L_t=24.85 x [1-e-^{0.113(t+3.87)}].
Apoptosis: Programmed Cell Death, Mahmut Çalişkan
Apoptosis: Programmed Cell Death, Mahmut Çalişkan
Turkish Journal of Zoology
Programmed cell death has been found in many multicellular organisms and occurs as a part of normal development as well as in pathological processes associated with some diseases. Programmed cell death, or apoptosis, is the process whereby certain cells are induced to activate their own death or cell suicide. Apoptosis has been described in a wide variety of cell and tissue types from nematodes to mammals. Apoptosis, unlike necrosis, is mediated by the active participation of dying cells. In another words, the dying cells synthesize certain proteins and enzymes to carry out the "suicide" process. The genes involved in apoptosis …
Histological And Histochemical Studies On The Extensor Muscle Of The Pectoral Fin Of Rainbow Trout (Oncorhynchus Mykiss), Fati̇me Geyi̇koğlu, Abdullah Özkaral
Histological And Histochemical Studies On The Extensor Muscle Of The Pectoral Fin Of Rainbow Trout (Oncorhynchus Mykiss), Fati̇me Geyi̇koğlu, Abdullah Özkaral
Turkish Journal of Zoology
In this study, taking the extensor muscle out of the pectoral fin of trout, lipid and mitochondria contents of muscle fibres were examined. Succinic dehydrogenase and Sudan black B stain methods were applied on the sections removed by freezing microtomy. Haematoxylen and eosin staining were also applied on the sections obtained from paraffin blocks. It was observed histologically that nuclei of muscle fibre were located just under the sarcolemma. Three types of fibres red, intermediate and white were identified by the applied histochemical methods. It was observed that this muscle was rich in red and intermediate fibres. As a result, …
The Growth Characteristics Of Chondrostoma Regium (Heckel, 1843) In Atatürk Dam Lake (Turkey), S. Ahmet Oymak
The Growth Characteristics Of Chondrostoma Regium (Heckel, 1843) In Atatürk Dam Lake (Turkey), S. Ahmet Oymak
Turkish Journal of Zoology
In this study, growth characteristics including as age composition, condition factor, growth, and age-length, age-weight and length-weight relationships, in Chondrostoma regium (Heckel, 1843) living in Atatürk Dam Lake on the Euphrates River were determined. A total of 725 specimens of age groups I-VIII were investigated. The length of females and males was found statistically different only in age group III, while the weights were statistically different in age groups III and IV (P
Faunistic And Taxonomic Studies On The Family Buprestidae (Coleoptera) In Erzurum, Erzincan, Artvin And Kars Provinces I. Acmaeoderinae, Polycestinae And Buprestinae, Göksel Tozlu, Hi̇kmet Özbek
Faunistic And Taxonomic Studies On The Family Buprestidae (Coleoptera) In Erzurum, Erzincan, Artvin And Kars Provinces I. Acmaeoderinae, Polycestinae And Buprestinae, Göksel Tozlu, Hi̇kmet Özbek
Turkish Journal of Zoology
A faunal and taxonomic study on the family Buprestidae (Coleoptera) was conducted in the provinces of Artvin (Central, Ardanuç, Borçka, Hopa, Şavşat and Yusufeli), Erzincan (Central, Tercan and Üzümlü), Erzurum (Central, Aşkale, Çat, Horasan, Ilıca, İspir, Narman, Oltu, Olur, Pasinler, Pazaryolu, Şenkaya, Tortum and Uzundere) and Kars (Digor and Sarıkamış) in 1993-1997. A total of 46 species and subspecies were recorded belonging to 3 subfamilies, namely Acmaeoderinae (12 species), Polycestinae (1) and Buprestinae (33). Of these taxa, Acmaeodera (s.str.) transcaucasica Semenov, Dicerca (s.str.) chlorostigma Mannerheim, Anthaxia (Haplanthaxia) truncata Abeille de Perrin and Acmaeoderella (Carininota) flavofasciata albifrons (Abeille de Perrin) are …
Faunistic And Taxonomic Studies On The Family Buprestidae (Coleoptera) In Erzurum, Erzincan, Artvin And Kars Provinces Ii. Sphenoptarinae, Chalcophorinae, Chrysobothrinae, Agrilinae, Cylindromorphinae And Trachyinae, Göksel Tozlu, Hi̇kmet Özbek
Faunistic And Taxonomic Studies On The Family Buprestidae (Coleoptera) In Erzurum, Erzincan, Artvin And Kars Provinces Ii. Sphenoptarinae, Chalcophorinae, Chrysobothrinae, Agrilinae, Cylindromorphinae And Trachyinae, Göksel Tozlu, Hi̇kmet Özbek
Turkish Journal of Zoology
A faunal and taxonomic study on the family Buprestidae (Coleoptera) was carried provinces of Artvin (Central, Ardanuç, Borçka, Hopa, Şavşat and Yusufeli), Erzincan (Central, Tercan and Üzümlü), Erzurum (Central, Aşkale, Çat, Horasan, Ilıca, İspir, Narman, Oltu, Olur, Pasinler, Pazaryolu, Şenkaya, Tortum and Uzundere) and Kars (Digor and Sarıkamış) in 1993-1997. A total of 38 species were recorded belonging to 6 subfamilies, namely Sphenopterinae (7 species), Chalcophorinae (8), Chrysobothrinae (3), Agrilinae (17), Cylindromorphinae (2) and Trachyinae (1). Of these taxa, Sphenoptera (s.str.) ixion Kerremans is a new record for the Turkish fauna. Agrilus (s.str.) aurichalceus Redtenbacher, Coraebus elatus (Fabricius), Coraebus rubi …
Effects Of Host Species On Some Biological Characteristics Of Apanteles Galleriae Wilkinson (Hym.; Braconidae), Fevzi̇ Uçkan, Adem Gülel
Effects Of Host Species On Some Biological Characteristics Of Apanteles Galleriae Wilkinson (Hym.; Braconidae), Fevzi̇ Uçkan, Adem Gülel
Turkish Journal of Zoology
Koinobiont and solitary, early instar larval endoparasitoid, Apanteles galleriae Wilkinson were reared on two lepidopterous host species, the greater wax moth, Galleriae mellonella (L.) and the small wax moth, Achoria grisella Fabr. under a photoperiod of 12:12 h (D: L) at 25°C and 60 % relative humidity. The parasitoid with three larval instars completed its immature developmental period within 26-28 days when it was reared on G. mellonella and within 25-27 days on A. grisella. The adult parasitoid has no preoviposition period. In the first 24 hours of the adult female life span, 10 to 20 eggs were laid. The …
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
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
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
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
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
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
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
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
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
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.