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2001

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Articles 331 - 360 of 585

Full-Text Articles in Animal Sciences

The Effect Of Dietary Phytase Supplementation At Different Levels On Tibial Bone Characteristics And Strength In Broilers, Neşe Kocabağli Jan 2001

The Effect Of Dietary Phytase Supplementation At Different Levels On Tibial Bone Characteristics And Strength In Broilers, Neşe Kocabağli

Turkish Journal of Veterinary & Animal Sciences

The influence of various levels of supplemental phytase on P and Ca availability was investigated using morphometric indices and the bone strength of tibiotarsi in broilers. Forty tibiotarsi were used from the Ross 308 male broilers fed corn-soybean meal based diets. Dietary treatments were: 1) Control: diet with DCP, 2) Negative control: control diet without DCP, 3) Control diet + 300 U of phytase/kg, 4) Control diet + 500 U of phytase/kg, 5) Control diet + 700 U of phytase/kg. There were no significant differences among the groups in the mean for tibiotarsal weight and length and also for the …

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The Effect Of Starter Culture Use In Pastırma Production On The Properties Of End Product, Muhammet İrfan Aksu, Mükerrem Kaya Jan 2001

The Effect Of Starter Culture Use In Pastırma Production On The Properties Of End Product, Muhammet İrfan Aksu, Mükerrem Kaya

Turkish Journal of Veterinary & Animal Sciences

The effects of three different starter preparations (Staphylococcus carnosus, Staphylococcus carnosus + Lactobocillus pentosus and Staphylococcus xylosus + Lactobacillus sakei) on the end product of pastırma were investigated. In the production of pastırma samples, dry curing was performed using NaCl, KNO_3, glucose and saccarose, and starter culture was added together with curing compounds to the meat. The starter culture used affected the counts of total aeophilic mesophilic Micrococcus/Staphylococcus and lactic acid bacteria. The Enterobacteriaceae counts were generally found to be below the detectable level (

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Morphology Of The Spinal Cord In The Chicken, Duck And Pigeon, R. Meri̇h Haziroğlu, İ. Önder Orhan, Di̇nçer Yildiz, M. Erdem Gülti̇ken Jan 2001

Morphology Of The Spinal Cord In The Chicken, Duck And Pigeon, R. Meri̇h Haziroğlu, İ. Önder Orhan, Di̇nçer Yildiz, M. Erdem Gülti̇ken

Turkish Journal of Veterinary & Animal Sciences

The morphology of the spinal cord in 15 chickens, 15 ducks and 15 pigeons obtained from the Ankara region were examined. The spinal cord consisted of 15 cervical, 7 thoracic, 14 lumbosacral and 5 coccygeal segments (a total of 41 segments) in the chickens; 15 cervical, 8 thoracic, 16 lumbosacral and 5 coccygeal segments (a total of 44 segments) in the ducks and 13 cervical, 6 thoracic, 13 lumbosacral and 5 coccygeal segments (a total of 37 segments) in the pigeons. The cervical enlargement was composed of cervical segments 13-15 and thoracic segments 1-2 in the chickens; cervical segments 12-15 …

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Production Characteristics Of Chios X Akkaraman F1 And B1 Crossbred Lambs. Ii. Fattening Performance, Slaughter And Carcass Characteristics, Fi̇kret Esen, Orhan Özbey Jan 2001

Production Characteristics Of Chios X Akkaraman F1 And B1 Crossbred Lambs. Ii. Fattening Performance, Slaughter And Carcass Characteristics, Fi̇kret Esen, Orhan Özbey

Turkish Journal of Veterinary & Animal Sciences

This study was carried out to investigate the fattening performance, and slaughter and carcass characteristics of Chios x Akkaraman F_1 and B_1 crossbred lambs. The data for the fattening study were obtained from 8 F_1 and 10 B_1 crossbred lambs. Five male lambs from each genotype were slaughtered to determine the slaughter and carcass characteristics. Lambs were fed with alfalfa hay and concentrates ad libitum in the fattening period. During the fattening period, the average daily live weight gains in crossbred F_1 and B_1 groups were 238.04 g and 232.07 g, and the amount of consumed concentrate feeds for 1 …

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Studies On Sediment Toxicity Bioassays Using Chironomus Thummi K., 1911 Larvae, Levent Bat, Mehmet Akbulut Jan 2001

Studies On Sediment Toxicity Bioassays Using Chironomus Thummi K., 1911 Larvae, Levent Bat, Mehmet Akbulut

Turkish Journal of Zoology

The acute toxicity of zinc, copper and lead to freshwater dipteran Chironomus thummi larvae was evaluated by static bioassays, calculating the LC_{50} (lethality concentration for 50%). Mortality increased with increasing concentrations of zinc, copper and lead. The LC_{50}s of Zn, Cu and Pb for survival were 11.2, 19.1 and 14.3 µg g^{-1}, respectively. The results indicated that Zn had the greatest toxicity, followed by Pb and Cu. Individual weight increased with increasing Cu, Zn and Pb concentrations. The results are discussed and compared with those of other studies.

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The Effects Of Precocene Ii On The Fine Structure Of Corpus Allatum In Adult Female Anacridium Aegyptium L. (Orthoptera, Acrididae), Gürsel Ergen Jan 2001

The Effects Of Precocene Ii On The Fine Structure Of Corpus Allatum In Adult Female Anacridium Aegyptium L. (Orthoptera, Acrididae), Gürsel Ergen

Turkish Journal of Zoology

In this study, the effects of the antijuvenile hormone Precocene II on the corpus allatum of adult females of Anacridium aegyptium L. (Orthoptera) were investigated with electron microscopy. In the insects, topically treated with 500 µg precocene II, the corpora allata did not show marked atrophy or destruction. After 10 or 20 days of precocene II treatment, the ultrastructural changes of especially the nuclei, mitochondria, endoplasmic reticulum membranes, Golgi complexes and some other intracellular organelles in the gland cells, probably reflect a moderate sensitivity to this compound.

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A Study On The Ornithofauna Of Doğancı Pond In Alpu-Eskişehir, Eli̇f Erdoğdu Jan 2001

A Study On The Ornithofauna Of Doğancı Pond In Alpu-Eskişehir, Eli̇f Erdoğdu

Turkish Journal of Zoology

This study was carried to determine the ornithofauna of Doğancı Pond and vicinity, which is located in the Alpu District of Eskişehir province. The study area, which is situated on one of the migration routes for birds, has a natural pond and wetlands occurring around the pond during spring and fall. In the study period from August 1996 to August 1997, 86 species and 1 subspecies belonging to 36 families from 13 orders were identified in the area.

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Age And Growth Parameters Of Red Bandfish (Cepola Rubescens L., 1766) In İzmir Bay, Murat Kaya, Okan Özaydin, Hüseyi̇n Avni̇ Benli̇ Jan 2001

Age And Growth Parameters Of Red Bandfish (Cepola Rubescens L., 1766) In İzmir Bay, Murat Kaya, Okan Özaydin, Hüseyi̇n Avni̇ Benli̇

Turkish Journal of Zoology

The age and growth parameters of red bandfish (Cepola rubescens L.,1766) were determined from the specimens collected in İzmir Bay (Aegean Sea) between January 1996 and February 1997. Mean length at age data from otolith readings were used to estimate the growth parameters of the von Bertalanffy equation: for females, L_{\infity}=78.48 cm, K=0.17 y^{-1}, t_o=0.0972 y, W_{\infity}=110.00 g, K=0.10 y^{-1}, to=0.1033 y and for males L_{\infity}= 83.22 cm, K=0.16 y^{-1}, t_o=0.0888 y ; W_{\infity}=129.83, K=0.0818 y^{-1}, to=-0.4117 y. Length-weight relationships was estimated for males and females to be W=0.07723 L^{1.11217} and W=0.029154 L^{1.38434}, respectively. The observed mean total length and …

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Excretory Products Of Green Mussel Perna Viridis L. And Their Implications On Power Plant Operation, J. Gunasingh Masilamoni, Jayapaul Azariah, K. Nandakumar, K. Samuel Jesudoss, K. K. Satpathy, K. V. K Nair Jan 2001

Excretory Products Of Green Mussel Perna Viridis L. And Their Implications On Power Plant Operation, J. Gunasingh Masilamoni, Jayapaul Azariah, K. Nandakumar, K. Samuel Jesudoss, K. K. Satpathy, K. V. K Nair

Turkish Journal of Zoology

Excretion in marine animals is considered an important factor in assessing physiological status. Perna viridis, a widely distributed bivalve species, was found to be the dominant (>70%) organism in the seawater intake tunnel of Madras Atomic Power Station (MAPS). The excretion patterns (ammonia, nitrite, phosphate and fecal matter production) of three different size groups (4-5 cm, 6-7 cm, and 8-9 cm shell length) of P. viridis were studied in the laboratory at different salinities (15, 20, 25, 30 and 34 ppt). The amount of excreted products was positively related to the size of the mussels. At ambient salinity, the …

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A Cytogenetic Study On The Pelobates Syriacus (Amphibia, Anura) In Bursa-Turkey, İsmai̇l Hakki Uğurtaş, Berri̇n Tunca, Ni̇lüfer Aydemi̇r, Rahmi̇ Bi̇laloğlu Jan 2001

A Cytogenetic Study On The Pelobates Syriacus (Amphibia, Anura) In Bursa-Turkey, İsmai̇l Hakki Uğurtaş, Berri̇n Tunca, Ni̇lüfer Aydemi̇r, Rahmi̇ Bi̇laloğlu

Turkish Journal of Zoology

In this study, we karyotyped Pelobates syriacus and examined cytological aspects of the chromosomes. The diploid number of chromosomes was found to be 2n=26, with 11 submetacentric pairs, 1 metacentric pair, and 1 acrocentric pair.

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On The Age, Growth And Reproduction Of The Barbel, Barbus Plebejus Escherichi (Steindachner, 1897) In The Oltu Stream Of Çoruh River (Artvin-Turkey), Ayhan Yildirim, Orhan Erdoğan, Mustafa Türkmen Jan 2001

On The Age, Growth And Reproduction Of The Barbel, Barbus Plebejus Escherichi (Steindachner, 1897) In The Oltu Stream Of Çoruh River (Artvin-Turkey), Ayhan Yildirim, Orhan Erdoğan, Mustafa Türkmen

Turkish Journal of Zoology

In this study, the age, growth and reproduction properties of 627 barbels, Barbus plebejus escherichi (Steindachner, 1897), from Oltu Stream in the Çoruh River Basin were investigated during a period from August 1994 to July 1996. The age of this species ranged between age groups 1 and 10, the second age group being dominant. Individuals were composed of 64.59% males and 35.41% females. von Bertalanffy growth parameters and length-weight relationships were L_t=29.35x(1-e^{-0.139(t+1.640)}), W_t=281.11x(1-e^{-0.139(t+1.640)})^{2.843} W=0.0189.FL^{2.843} (r=0.96) in males and L_t=32.77x(1-e^{-0.116(t+1.891)}), W_t=392.10x(1-e^{-0.116(t+1.891)})^{2.911}, W=0.0152.FL^{2.911} (r=0.97) in females. Condition coefficients of males and females were calculated to be 1.221 and 1.220 respectively. Sexual maturity …

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Erythrocyte Measurements Of Some Scincids From Turkey, Mehmet Kutsay Atatür, Hüseyi̇n Arikan, İ. Ethem Çevi̇k, Ahmet Mermer Jan 2001

Erythrocyte Measurements Of Some Scincids From Turkey, Mehmet Kutsay Atatür, Hüseyi̇n Arikan, İ. Ethem Çevi̇k, Ahmet Mermer

Turkish Journal of Zoology

The aim of this study was to determine the erythrocyte and nucleus sizes of some scincids (Ablepharus chernovi, Chalcides ocellatus, Eumeces schneideri, Mabuya aurata, Mabuya vittata, and Ophiomorus punctatissimus) from Turkey by means of blood smears stained with Wright's stain. The largest erythrocytes were observed in the smears of E. schneideri, and the smallest in M. vittata, while the largest nuclei were observed in E. schneideri and the smallest were in M. aurata. In terms of the studied species, the nucleus and erythrocyte sizes were found to be correlated (r= 0.302, P< 0.01).

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Age, Growth And Reproduction Of Acanthalburnus Microlepis, Filippi 1863 From The Yağan Region Of The Aras River, Turkey, Mustafa Türkmen, Orhan Erdoğan, H. İbrahi̇m Hali̇loğlu, Ayhan Yildirim Jan 2001

Age, Growth And Reproduction Of Acanthalburnus Microlepis, Filippi 1863 From The Yağan Region Of The Aras River, Turkey, Mustafa Türkmen, Orhan Erdoğan, H. İbrahi̇m Hali̇loğlu, Ayhan Yildirim

Turkish Journal of Zoology

The age, growth and reproduction characteristics of 1105 Acanthalburnus microlepis from the Yağan region of the Aras River, Turkey, were determined from monthly samples. Ages ranged from 1 to 7 years. The sex ratio was approximately 1.0 (51.49 % males, 48.51 % females). Females attained greater size and age than males. Von Bertalanffy growth parameters were: L_o= 29.87 cm, K= 0.1049, t_o= -1.92. The length-weight relationships for males and females were found to be W=0.0099L^{3.098} and W=0.0118L^{3.052} respectively. The condition coefficients of males and females were calculated as 1.192 and 1.209 respectively. Both sexes matured at the age of 2 …

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The Ostracoda (Crustacea) Fauna Of Lakes Erikli, Hamam, Mert, Pedina And Saka (İğneada, Kırklareli, Turkey), Selçuk Altinsaçli Jan 2001

The Ostracoda (Crustacea) Fauna Of Lakes Erikli, Hamam, Mert, Pedina And Saka (İğneada, Kırklareli, Turkey), Selçuk Altinsaçli

Turkish Journal of Zoology

This study was performed at Lakes Erikli, Hamam, Mert, Pedina and Saka (İğneda, Kırklareli) in 1999. Materials collected seasonally from the 20 stations were evaluated. The 24 species (Candona neglecta, Fabaeformiscandona fabaeformis, Pseudocandona compressa, Pseudocandona hartwigi, Pseudocandona marchica, Candonopsis kingsleii, Cypria ophtalmica, Physocypria kraepelini, Ilyocypris biplicata, Ilyocypris monstrifica, Cypris bispinosa, Eucypris inflata, Eucypris virens, Psychrodromus olivaceus, Heterocypris incongruens, Heterocypris salina, Cyprinotus inaequivalvis, Cypridopsis vidua, Limnocythere inopinata, Limnocythere stationis, Cyprideis torosa, Callistocythere diffusa, Pontocythere bacescoi and Urocythereis margaritifera) belonging to 18 genera were recorded. Three of them (Pseudocandona hartwigi, Ilyocypris monstrifica and Limnocythere stationis) are new records for the Ostracoda fauna …

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Karyotype Of Eptesicus Serotinus (Schreber, 1774) In Turkey (Mammalia: Chiroptera), Nursel Aşan Jan 2001

Karyotype Of Eptesicus Serotinus (Schreber, 1774) In Turkey (Mammalia: Chiroptera), Nursel Aşan

Turkish Journal of Zoology

In order to investigate the conventional karyotype of Eptesicus serotinus (Schreber, 1774) in Turkey, four specimens were karyotyped. It was determined that the diploid number was 2n=50, the number of autosomal arms was FN=50, the X chromosome was large submetacentric, and the Y chromosome was dot-like acrocentric and the smallest chromosome of the set. All of the autosomes were acrocentric. A secondary constriction on a medium-sized acrocentric pair was encountered in most of the metaphase spreads examined.

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Research On The Sea Turtle Population Of Belek Beach, Serdar Sak, İbrahi̇m Baran Jan 2001

Research On The Sea Turtle Population Of Belek Beach, Serdar Sak, İbrahi̇m Baran

Turkish Journal of Zoology

In this study, the status of the sea turtle population of Belek Beach, which is within the boundaries of Antalya province, was investigated during the 1996 and 1997 breeding seasons. 153 nests were recorded, 134 of which hatched (87.6%) and from these nests 6295 hatchlings were able to reach the sea in 1996. 168 nests were recorded in 1997, 136 of which hatched (80.9%) and from these nests 7082 hatchlings were able to reach the sea. The nest density was recorded as 9.1 nests/kilometer in 1996 and as 9.9 nests/kilometer in 1997. The average clutch size was 78 for both …

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A New Species Of Hydryphantes C.L.Koch, 1841(Hydryphantidae Hydrachnellae, Acari) For The Turkish Fauna, Yunus Ömer Boyaci, Muhli̇s Özkan Jan 2001

A New Species Of Hydryphantes C.L.Koch, 1841(Hydryphantidae Hydrachnellae, Acari) For The Turkish Fauna, Yunus Ömer Boyaci, Muhli̇s Özkan

Turkish Journal of Zoology

In this study, the morphological characteristics and zoogeographical distributions of the male and female Hydryphantes parmulatus Koenike, 1912, which is a new record for the Turkish fauna, are described. The morphological features of the species are compared with those present in close species

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Recent Ostracoda (Crustacea) Fauna Of The Black Sea Coasts Of Turkey, Mustafa Kiliç Jan 2001

Recent Ostracoda (Crustacea) Fauna Of The Black Sea Coasts Of Turkey, Mustafa Kiliç

Turkish Journal of Zoology

This study was performed to determine the Ostracoda fauna of the Black Sea coasts of Turkey. The material collected from 34 stations in June, July, and August of 1995 was evaluated and classified. The results of this classification are as follows: 24 species (Ilyocypris inermis, Candona sp., Cyprinotus inaequivalvis, Heterocypris salina, Heterocypris incongruens, Cypridopsis vidua, Potamocypris villosa, Potamocypris steueri, Limnocythere inopinata, Leptocythere multipunctata, Callistocythere mediterranea, Callistocythere diffusa, Costa edwardsii, Aurila convexa, Cyprideis torosa, Pontocythere baceseoi, Eucytherura bulgarica, Microcytherura nigrescens, Loxoconcha pontica, Loxoconcha rhomboidea, Xestoleberis cornelii, Sclerochilus gewmülleri, Paradoxostoma intermedium and Paradoxostoma guttatum) and 3 subspecies (Cythereis rubra pontica, Xestoleberis aurantia …

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Karyotypes Of Cyprinid Fish Capoeta Trutta And Capoeta Capoeta Umbla (Cyprinidae) From The Tigris River, Neval Kiliç Demi̇rok, Erhan Ünlü Jan 2001

Karyotypes Of Cyprinid Fish Capoeta Trutta And Capoeta Capoeta Umbla (Cyprinidae) From The Tigris River, Neval Kiliç Demi̇rok, Erhan Ünlü

Turkish Journal of Zoology

Chromosome numbers and karyotypes of Cyprinid fish Capoeta trutta and Capoeta capoeta umbla (Cyprinidae) in the Tigris River were determined by the use of chromosome preparation techniques from uncultured kidney. The diploid chromosome number in C. trutta was found to be 2n = 150, with 35 pairs of meta-submetacentric chromosomes, 40 pairs of subtelo-acrocentric chromosomes and the chromosome arms number (NF) was 220. Chromosomal studies on the C. c. umbla revealed the diploid chromosome number to be 2n = 150, with 43 pairs of meta-submetacentric chromosomes, 32 pairs of subtelo-acrocentric chromosomes with NF = 236. Sex chromosomes were not determined …

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The Tabanidae (Diptera) Fauna Of Çanakkale Province, Ali̇ Yavuz Kiliç Jan 2001

The Tabanidae (Diptera) Fauna Of Çanakkale Province, Ali̇ Yavuz Kiliç

Turkish Journal of Zoology

In this faunistic study carried out in the Anatolian part of Çanakkale province, 40 Tabanidae species distributed in the area were determined. Previous studies carried out in this province reported 31 species. Overall, 52 species belonging to Pangoninae, Chrysopsinae and Tabaninae subfamilies have been determined to date. Twenty-one of these species are first records for the province and Silvius latifrons graecus Chv., Mch., & Lyn., is a first record for Turkey as well.

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Scanning Electron Microscopic (Sem) Observations On Some Members Of Actinosporean (Phylum Myxozoa) Collective Groups And Possible Usage Of Sem In Type Description, Ahmet Özer Jan 2001

Scanning Electron Microscopic (Sem) Observations On Some Members Of Actinosporean (Phylum Myxozoa) Collective Groups And Possible Usage Of Sem In Type Description, Ahmet Özer

Turkish Journal of Zoology

In this study, eleven different actinosporean types belonging to the collective groups synactinomyxon, aurantiactinomyxon, echinactinomyxon, raabeia and siedleckiella were observed under a scanning electron microscope (SEM) for the first time. The results obtained showed that surface structures and their ornamentation on the spore body and branches seen on the caudal processes of actinosporean spores are of importance in determination of the spores, at least at the collective group level.

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Ostracod (Crustacea) Fauna Of Lake Eğirdir (Isparta), Oya Özuluğ, Nerdi̇n Kubanç, Di̇nçer Gülen Jan 2001

Ostracod (Crustacea) Fauna Of Lake Eğirdir (Isparta), Oya Özuluğ, Nerdi̇n Kubanç, Di̇nçer Gülen

Turkish Journal of Zoology

In this study, the materials collected from 30 stations at different locations at Lake Eğirdir were evaluated. According to the results, a total of 12 species belonging to 11 genera of the superfamilies Darwinulidacea and Cypridacea were determined. Of these, Potomocypris variegata (Brady & Norman, 1889) is a new record from Anatolia. At the same time, the parthenogenetic populations of Plesiocypridopsis newtoni (Brady & Robertson, 1870) are reported from Anatolia in this study for the first time.

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The Tabanidae (Diptera) Fauna Of Balıkesir Province, Ali̇ Yavuz Kiliç Jan 2001

The Tabanidae (Diptera) Fauna Of Balıkesir Province, Ali̇ Yavuz Kiliç

Turkish Journal of Zoology

The faunistic study was carried out in Balıkesir province between 1996-1997 and 50 Tabanidae species were determined. The total number of species reported from the province by previous studies and this study reached 57. Twenty-four of these species are the first records for this province. Five species are from Chrysopsinae, and the rest of them are from Tabaninae.

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Rediscovery Of Sesteria Gallandi Bourguignat, 1884 (Mollusca, Pulmonata, Buliminoidea, Enidae), Hartwig Schütt, Ridvan Şeşen Jan 2001

Rediscovery Of Sesteria Gallandi Bourguignat, 1884 (Mollusca, Pulmonata, Buliminoidea, Enidae), Hartwig Schütt, Ridvan Şeşen

Turkish Journal of Zoology

Rediscovery of the land-snail Sesteria gallandi Bourguignat, 1884 is reported. The original description was based on only one empty shell, which later was lost and never found again, and the exact type locality in Turkey was unknown. Now we found this species in Mardin Province near the village of Sariköy on the Cizre - İdil - Midyat road 20 km after İdil in the forest, in May 2000.

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A Study On The Seasonal Distributions Of Ostracoda (Crustacea) Species Found In Lake Eğirdir (Isparta/Turkey), Selçuk Altinsaçli Jan 2001

A Study On The Seasonal Distributions Of Ostracoda (Crustacea) Species Found In Lake Eğirdir (Isparta/Turkey), Selçuk Altinsaçli

Turkish Journal of Zoology

This study was conducted at Lake Eğirdir in the summer (July), autumn (September), winter (February) and spring (April) of 1997. The materials collected from 41 stations were analysed and 19 species (Ilyocypris biplicata, Ilyocypris bradyi, Ilyocypris gibba, Candona neglecta, Cypris pubera, Prionocypris zenkeri, Eucypris inflata, Eucypris virens, Heterocypris incongruens, Cyprinotus inaequivalvis, Cypria ophtalmica, Physocypria kraepelini, Cypridopsis hartwigi, Cypridopsis vidua, Plesiocypridopsis newtoni, Potamocypris varigeata, Psychrodromus olivaceus, Darwinula stevensoni and Limnocythere inopinata) belonging to 15 genera were recorded. Cypridopsis hartwigi is a new record for the Ostracoda fauna of Turkey.

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Comparable Age Determination In Different Bony Structures Of Pleuronectes Flesus Luscus Pallas, 1811 Inhabiting The Black Sea, Nazmi̇ Polat, Derya Bostanci, Savaş Yilmaz Jan 2001

Comparable Age Determination In Different Bony Structures Of Pleuronectes Flesus Luscus Pallas, 1811 Inhabiting The Black Sea, Nazmi̇ Polat, Derya Bostanci, Savaş Yilmaz

Turkish Journal of Zoology

The aim of this study is to determine the most reliable bony structure for ageing of Pleuronectes flesus luscus inhabiting the Black Sea. The age determination method and its accuracy are the most important subjects for the evaluation of age-weight-length relationships in fisheries biology, since the estimates of survival, growth and mortality rates, and the analysis of year classes and recruitment all depend on age structure. In this study, scales, vertebrae and otoliths removed from each fish were examined by two readers three times each without reference to any data except the date of capture. The precision of readers and …

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Larval Rearing Of The Black Sea Turbot, Scophthalmus Maximus (Linnaeus, 1758), Under Laboratory Conditions, Temel Şahi̇n Jan 2001

Larval Rearing Of The Black Sea Turbot, Scophthalmus Maximus (Linnaeus, 1758), Under Laboratory Conditions, Temel Şahi̇n

Turkish Journal of Zoology

To establish a seed production technique for Black Sea turbot, Scophthalmus maximus, eggs and larvae were observed under artificial rearing conditions. Larvae were obtained artificially from eggs of tank-held broodstock. The egg fertilization was 27.6% and the fertilized eggs were 1.213±0.063 mm in diameter, were spherical pelagic and had one oil globule. From an initial length of 3.12±0.14 mm on day 0, the larvae grown to 167.28±15.32 mm in the normal group and to 159.98±12.25 mm in the abnormal group on day 246. The feeding regime consisted of Nannochloropsis oculata, Brachionus plicatilis, Artemia, and granule feed. The survival rates were …

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Certain Reproductive Characteristics Of The Catfish (Clarias Gariepinus Burchell, 1822) Living In The River Asi, Turkey, Şükran Özdi̇lek Yalçin, Kemal Solak, İhsan Akyurt Jan 2001

Certain Reproductive Characteristics Of The Catfish (Clarias Gariepinus Burchell, 1822) Living In The River Asi, Turkey, Şükran Özdi̇lek Yalçin, Kemal Solak, İhsan Akyurt

Turkish Journal of Zoology

A total of 523 C. gariepinus caught in the River Asi were surveyed from October, 1996 to September, 1998 to find out the age distribution throughout the population that varied between 0+ and 5 years of age, with the one year age group observed to be dominant in number. Findings also showed that both sexes started to reach maturity at the age of 1, and all the fishes examined had become mature by the end of the second year. The average diameter of ripened eggs was 1.41 - 1.66 mm. They spawned in a period from May to August when …

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Stomach Contents Of The Catfish (Clarias Gariepinus Burchell, 1822) In The River Asi (Turkey), Şükran Özdi̇lek Yalçin, İhsan Akyurt, Kemal Solak Jan 2001

Stomach Contents Of The Catfish (Clarias Gariepinus Burchell, 1822) In The River Asi (Turkey), Şükran Özdi̇lek Yalçin, İhsan Akyurt, Kemal Solak

Turkish Journal of Zoology

Natural food items of catfish (Clarias gariepinus Burchell, 1822) were investigated in the River Asi from September 1996 to October 1998. Analyses of stomach contents showed that the catfish feed basically on Arthropoda, mostly Diptera larvae, and on plant materials to a considerable extent. A successful filter feeding was observed, especially during the summer period.

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Food Items And Feeding Rates For Wild Whooping Crane Colts In Wood Buffalo National Park, Douglas G. Bergeson, Mark Bradley, Geoffrey L. Holroyd Jan 2001

Food Items And Feeding Rates For Wild Whooping Crane Colts In Wood Buffalo National Park, Douglas G. Bergeson, Mark Bradley, Geoffrey L. Holroyd

Proceedings of the North American Crane Workshop

Food habits of 5 whooping crane (Orus americana) colts in 4 nest ponds were recorded in the days following hatching in Wood Buffalo National Park (WBNP). In total, 93 hours of observations were made from blinds that were 60-80 m away from the nest. Spotting scopes and binoculars were used to identify food items. The adults were observed bringing the following items to the colts: adult dragonflies (Libellula sp., and Aeshna sp.), fish (Culaea inconstans), diving beetles (Rhantus binotatus, Acilius semisulcatus, Oraphoderus occidentalis, and Dytiscus alaskanus), damselflies (Enallagma sp., and Lestes sp.), …

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