Osman Kaftanoglu - Academia.edu (original) (raw)

Papers by Osman Kaftanoglu

Research paper thumbnail of An Investigation on Some Diseases and Parasites of Bumblebee Queens (Bombus terrestris L.) in Turkey

Pakistan Journal of Biological Sciences, 2006

ABSTRACT The mated bumblebee queens overwinter in the soil and they make nests under the ground t... more ABSTRACT The mated bumblebee queens overwinter in the soil and they make nests under the ground they come into contact with many ground dwelling pathogens and parasites. These pathogens and parasites may kill the queen. This study was conducted to investigated the occur some diseases and parasites on 578 mated Bombus terrestris L. queens collected from Adana, Mersin, Antalya and Bodrum regions in Turkey. For Nosema bombi , the highest infestation ratios were found in Bodrum ecotype (17.48%), for Apicystis bombi , the highest infestation ratios were found in Bodrum ecotype (8.54%), for Crithidia bombi , the highest infestation ratios were found in Bodrum ecotype (9.76%), for bacteria, the highest infestation ratios were found in Mersin ecotype (39.09%), for fungus, the highest infestation ratios were found in Mersin ecotype (17.27%), for internal parasites ( Locustacarus buchneri ), the highest infestation ratios were found in Bodrum ecotype (13.01%) and for external mites ( Kutzinia laevis , Scutacarus acarorus , Parasitus fucorum ) the highest infestation ratios were found in Antalya ecotype (41.44%, respectively).

Research paper thumbnail of Colony developmental patterns in different local populations of the Turkish bumble bee,Bombus terrestris dalmatinus

Journal of Apicultural Research, 2000

Research paper thumbnail of A New Syringe for Semen Storage and Instrumental Insemination of Queen Honeybees

Journal of Apicultural Research, 1980

Research paper thumbnail of A Washing Technique for Collection of Honeybee Semen

Journal of Apicultural Research, 1980

Research paper thumbnail of Effects of Insemination on the Initiation of Oviposition in the Queen Honeybee

Journal of Apicultural Research, 1982

Research paper thumbnail of Preservation of Honeybee Spermatozoa in Liquid Nitrogen

Journal of Apicultural Research, 1984

Research paper thumbnail of Turkish honey bees belong to the east Mediterranean mitochondrial lineage

Apidologie, 1997

Des abeilles ont été prélevées dans douze localités de Turquie (fig 1) : Thrace (sept colonies), ... more Des abeilles ont été prélevées dans douze localités de Turquie (fig 1) : Thrace (sept colonies), Gökçeada (dix colonies), Bolu (deux colonies), Bursa (une colonie), Menemen (neuf colonies), Fethiye (neuf colonies), Beypazari (six colonies), Erzurum (six colonies), ...

Research paper thumbnail of Brief communication. Turkish honeybees: genetic variation and evidence for a fourth lineage of Apis mellifera mtDNA

Journal of Heredity, 2000

... However, mtDNA pre-serves information on the relatedness of queens and queen lines ... Identi... more ... However, mtDNA pre-serves information on the relatedness of queens and queen lines ... Identification of mitochon-drial DNA of Apis mellifera ( Hymenoptera: Apidae) sub-species groups by multiplex allele-specific amplifica-tion with competing fluorescent-labeled primers. ...

Research paper thumbnail of Starvation stress during larval development facilitates an adaptive response in adult worker honey bees (Apis mellifera L.)

The Journal of experimental biology, 2016

Most organisms are constantly faced with environmental changes and stressors. In diverse organism... more Most organisms are constantly faced with environmental changes and stressors. In diverse organisms, there is an anticipatory mechanism during development that can program adult phenotypes. The adult phenotype would be adapted to the predicted environment that occurred during organism maturation. However, whether this anticipatory mechanism is present in eusocial species is questionable because eusocial organisms are largely shielded from exogenous conditions by their stable nest environment. In this study, we tested whether food deprivation during development of the honey bee (Apis mellifera), a eusocial insect model, can shift adult phenotypes to better cope with nutritional stress. After subjecting fifth instar worker larvae to short-term starvation, we measured nutrition-related morphology, starvation resistance, physiology, endocrinology and behavior in the adults. We found that the larval starvation caused adult honey bees to become more resilient toward starvation. Moreover, t...

Research paper thumbnail of Larval starvation improves metabolic response to adult starvation in honey bees (Apis mellifera L.)

The Journal of experimental biology, 2016

Environmental changes during development have long-term effects on adult phenotypes in diverse or... more Environmental changes during development have long-term effects on adult phenotypes in diverse organisms. Some of the effects play important roles in helping organisms adapt to different environments, such as insect polymorphism. Others, especially those resulting from an adverse developmental environment, have a negative effect on adult health and fitness. However, recent studies have shown that those phenotypes influenced by early environmental adversity have adaptive value under certain (anticipatory) conditions that are similar to the developmental environment, though evidence is mostly from morphological and behavioral observations and it is still rare at physiological and molecular levels. In the companion study, we applied a short-term starvation treatment to fifth instar honey bee larvae and measured changes in adult morphology, starvation resistance, hormonal and metabolic physiology and gene expression. Our results suggest that honey bees can adaptively respond to the pred...

Research paper thumbnail of Studies on the development of instrumental insemination of queen honey bees (Apis mellifera L.): semen collection, storage and their effects on the onset of oviposition

Research paper thumbnail of Biogéographie du genre Ceratina Latreille (Hymenoptera, Apoidea) dans la Çukurova et ses environs immédiats (Turquie)

Annales- Societe Entomologique de France

Research paper thumbnail of Palmer, M. R., Smith, D. R. and Kaftanoglu, O.. Turkish honeybees: genetic variation and evidence for a fourth lineage of Apis mellifera mtDNA. J Hered, 91: 42-46

Research paper thumbnail of Nurse bee behavior manipulates worker honey bee reproductive development

The evolution of nonreproductive castes is a fundamental question in evolution biology. Honey bee... more The evolution of nonreproductive castes is a fundamental question in evolution biology. Honey bee workers , nonreproductive females, don’t reproduce when the queen present in the nest, but have ovaries. The number of ovarioles (ovarian filaments) influences the worker social behavior as well as propensity to become an egg-layer in the absence of the queen. Previous studies have shown that the number of ovarioles is resulted from nurse bee feeding behavior and larval developmental programming. In this study, we tested how nurse bees affect ovariole number and body mass in workers, and how worker larvae respond to food delivery during different larval life stages. We found that nurses controlled larvae growth and ovariole number by temporarily manipulating food delivery. Body mass of worker larvae was more sensitive to nutrition during the first to the fourth instar, whereas ovariole number of workers was more sensitive during the fifth instar. We conclude that nurse feeding behavior ...

Research paper thumbnail of Larval starvation affects metabolic physiology and behaviors of adult honeybees

Larval nutrition in many solitary insects affects adult body size, fecundity and lifespan. In hon... more Larval nutrition in many solitary insects affects adult body size, fecundity and lifespan. In honeybees, malnutrition is largely responsible for colony losses. Although carbonization by workers is applied to malnourished larvae at early stage, the elder malnourished larvae are able to develop to adults. Here, we performed the starvation on honeybee larvae at the 5th instar stage to investigate the effects of larval nutrition on adult bees. We found newly emerged bees with the early starvation were smaller than controls, had smaller ovaries, and were less sensitive to sugar. In addition, these bees had higher glucose and trehalose titer in their hemolymph, had less protein content, and tended to reduce lipid store in the fat body. By looking at the gene expression and endocrine hormone in these treated bees, we found juvenile hormone (JH) titer was increased in the hemolymph and tyramine receptor (TYR) expression was decreased in the fat body. Overall, our study demonstrates that lar...

Research paper thumbnail of The Effects Of Season And Honey Bee Apis Mellifera) Genotype On Grafting Rates and Royal Jelly Production

Turkish Journal of Veterinary and Animal Sciences

Research paper thumbnail of Early life stage nutrition affects adult morphology and metabolisms in honey bees

As eusocial insects, honey bee brood is taken care of by nurses (young worker bees). Although nur... more As eusocial insects, honey bee brood is taken care of by nurses (young worker bees). Although nurses control overall the quality of new generation of workers, the colony nutrition state and environmental nutrition flow affects worker body size and ovariole number. Previous studies have shown that ovariole number is an important factor influencing worker gustatory responsiveness to sugar, when workers forage and what workers forage. Here, we performed short-term starvation on fifth instar larvae and monitored ovariole number, body mass and metabolic rate in adult bees. We found the bees with starvation treatment were smaller, had less ovariole number and higher metabolic rate. Their respiratory quotient (RQ) suggest they used sugar, protein and lipid for their energy fuels, whereas the controls used pure sugars. We also measured the metabolic stores in fat bodies and thoraces which are main tissues to store lipid and glycogen in honey bees. And we also measured glucose and trehalose ...

Research paper thumbnail of Morphometric Identification of Queens, Workers and Intermediates in In Vitro Reared Honey Bees (Apis mellifera)

PloS one, 2015

In vitro rearing is an important and useful tool for honey bee (Apis mellifera L.) studies. Howev... more In vitro rearing is an important and useful tool for honey bee (Apis mellifera L.) studies. However, it often results in intercastes between queens and workers, which are normally are not seen in hive-reared bees, except when larvae older than three days are grafted for queen rearing. Morphological classification (queen versus worker or intercastes) of bees produced by this method can be subjective and generally depends on size differences. Here, we propose an alternative method for caste classification of female honey bees reared in vitro, based on weight at emergence, ovariole number, spermatheca size and size and shape, and features of the head, mandible and basitarsus. Morphological measurements were made with both traditional morphometric and geometric morphometrics techniques. The classifications were performed by principal component analysis, using naturally developed queens and workers as controls. First, the analysis included all the characters. Subsequently, a new analysis...

Research paper thumbnail of Effect of Supplemental Feeding of Honeybee (Hymenoptera: Apidae) Populations and the Economic Value of Supplemental Feeding for Production of Package-Bees

Journal of Economic Entomology, 1984

ABSTRACT

Research paper thumbnail of An Investigation on Some Diseases and Parasites of Bumblebee Queens (Bombus terrestris L.) in Turkey

Pakistan Journal of Biological Sciences, 2006

ABSTRACT The mated bumblebee queens overwinter in the soil and they make nests under the ground t... more ABSTRACT The mated bumblebee queens overwinter in the soil and they make nests under the ground they come into contact with many ground dwelling pathogens and parasites. These pathogens and parasites may kill the queen. This study was conducted to investigated the occur some diseases and parasites on 578 mated Bombus terrestris L. queens collected from Adana, Mersin, Antalya and Bodrum regions in Turkey. For Nosema bombi , the highest infestation ratios were found in Bodrum ecotype (17.48%), for Apicystis bombi , the highest infestation ratios were found in Bodrum ecotype (8.54%), for Crithidia bombi , the highest infestation ratios were found in Bodrum ecotype (9.76%), for bacteria, the highest infestation ratios were found in Mersin ecotype (39.09%), for fungus, the highest infestation ratios were found in Mersin ecotype (17.27%), for internal parasites ( Locustacarus buchneri ), the highest infestation ratios were found in Bodrum ecotype (13.01%) and for external mites ( Kutzinia laevis , Scutacarus acarorus , Parasitus fucorum ) the highest infestation ratios were found in Antalya ecotype (41.44%, respectively).

Research paper thumbnail of An Investigation on Some Diseases and Parasites of Bumblebee Queens (Bombus terrestris L.) in Turkey

Pakistan Journal of Biological Sciences, 2006

ABSTRACT The mated bumblebee queens overwinter in the soil and they make nests under the ground t... more ABSTRACT The mated bumblebee queens overwinter in the soil and they make nests under the ground they come into contact with many ground dwelling pathogens and parasites. These pathogens and parasites may kill the queen. This study was conducted to investigated the occur some diseases and parasites on 578 mated Bombus terrestris L. queens collected from Adana, Mersin, Antalya and Bodrum regions in Turkey. For Nosema bombi , the highest infestation ratios were found in Bodrum ecotype (17.48%), for Apicystis bombi , the highest infestation ratios were found in Bodrum ecotype (8.54%), for Crithidia bombi , the highest infestation ratios were found in Bodrum ecotype (9.76%), for bacteria, the highest infestation ratios were found in Mersin ecotype (39.09%), for fungus, the highest infestation ratios were found in Mersin ecotype (17.27%), for internal parasites ( Locustacarus buchneri ), the highest infestation ratios were found in Bodrum ecotype (13.01%) and for external mites ( Kutzinia laevis , Scutacarus acarorus , Parasitus fucorum ) the highest infestation ratios were found in Antalya ecotype (41.44%, respectively).

Research paper thumbnail of Colony developmental patterns in different local populations of the Turkish bumble bee,Bombus terrestris dalmatinus

Journal of Apicultural Research, 2000

Research paper thumbnail of A New Syringe for Semen Storage and Instrumental Insemination of Queen Honeybees

Journal of Apicultural Research, 1980

Research paper thumbnail of A Washing Technique for Collection of Honeybee Semen

Journal of Apicultural Research, 1980

Research paper thumbnail of Effects of Insemination on the Initiation of Oviposition in the Queen Honeybee

Journal of Apicultural Research, 1982

Research paper thumbnail of Preservation of Honeybee Spermatozoa in Liquid Nitrogen

Journal of Apicultural Research, 1984

Research paper thumbnail of Turkish honey bees belong to the east Mediterranean mitochondrial lineage

Apidologie, 1997

Des abeilles ont été prélevées dans douze localités de Turquie (fig 1) : Thrace (sept colonies), ... more Des abeilles ont été prélevées dans douze localités de Turquie (fig 1) : Thrace (sept colonies), Gökçeada (dix colonies), Bolu (deux colonies), Bursa (une colonie), Menemen (neuf colonies), Fethiye (neuf colonies), Beypazari (six colonies), Erzurum (six colonies), ...

Research paper thumbnail of Brief communication. Turkish honeybees: genetic variation and evidence for a fourth lineage of Apis mellifera mtDNA

Journal of Heredity, 2000

... However, mtDNA pre-serves information on the relatedness of queens and queen lines ... Identi... more ... However, mtDNA pre-serves information on the relatedness of queens and queen lines ... Identification of mitochon-drial DNA of Apis mellifera ( Hymenoptera: Apidae) sub-species groups by multiplex allele-specific amplifica-tion with competing fluorescent-labeled primers. ...

Research paper thumbnail of Starvation stress during larval development facilitates an adaptive response in adult worker honey bees (Apis mellifera L.)

The Journal of experimental biology, 2016

Most organisms are constantly faced with environmental changes and stressors. In diverse organism... more Most organisms are constantly faced with environmental changes and stressors. In diverse organisms, there is an anticipatory mechanism during development that can program adult phenotypes. The adult phenotype would be adapted to the predicted environment that occurred during organism maturation. However, whether this anticipatory mechanism is present in eusocial species is questionable because eusocial organisms are largely shielded from exogenous conditions by their stable nest environment. In this study, we tested whether food deprivation during development of the honey bee (Apis mellifera), a eusocial insect model, can shift adult phenotypes to better cope with nutritional stress. After subjecting fifth instar worker larvae to short-term starvation, we measured nutrition-related morphology, starvation resistance, physiology, endocrinology and behavior in the adults. We found that the larval starvation caused adult honey bees to become more resilient toward starvation. Moreover, t...

Research paper thumbnail of Larval starvation improves metabolic response to adult starvation in honey bees (Apis mellifera L.)

The Journal of experimental biology, 2016

Environmental changes during development have long-term effects on adult phenotypes in diverse or... more Environmental changes during development have long-term effects on adult phenotypes in diverse organisms. Some of the effects play important roles in helping organisms adapt to different environments, such as insect polymorphism. Others, especially those resulting from an adverse developmental environment, have a negative effect on adult health and fitness. However, recent studies have shown that those phenotypes influenced by early environmental adversity have adaptive value under certain (anticipatory) conditions that are similar to the developmental environment, though evidence is mostly from morphological and behavioral observations and it is still rare at physiological and molecular levels. In the companion study, we applied a short-term starvation treatment to fifth instar honey bee larvae and measured changes in adult morphology, starvation resistance, hormonal and metabolic physiology and gene expression. Our results suggest that honey bees can adaptively respond to the pred...

Research paper thumbnail of Studies on the development of instrumental insemination of queen honey bees (Apis mellifera L.): semen collection, storage and their effects on the onset of oviposition

Research paper thumbnail of Biogéographie du genre Ceratina Latreille (Hymenoptera, Apoidea) dans la Çukurova et ses environs immédiats (Turquie)

Annales- Societe Entomologique de France

Research paper thumbnail of Palmer, M. R., Smith, D. R. and Kaftanoglu, O.. Turkish honeybees: genetic variation and evidence for a fourth lineage of Apis mellifera mtDNA. J Hered, 91: 42-46

Research paper thumbnail of Nurse bee behavior manipulates worker honey bee reproductive development

The evolution of nonreproductive castes is a fundamental question in evolution biology. Honey bee... more The evolution of nonreproductive castes is a fundamental question in evolution biology. Honey bee workers , nonreproductive females, don’t reproduce when the queen present in the nest, but have ovaries. The number of ovarioles (ovarian filaments) influences the worker social behavior as well as propensity to become an egg-layer in the absence of the queen. Previous studies have shown that the number of ovarioles is resulted from nurse bee feeding behavior and larval developmental programming. In this study, we tested how nurse bees affect ovariole number and body mass in workers, and how worker larvae respond to food delivery during different larval life stages. We found that nurses controlled larvae growth and ovariole number by temporarily manipulating food delivery. Body mass of worker larvae was more sensitive to nutrition during the first to the fourth instar, whereas ovariole number of workers was more sensitive during the fifth instar. We conclude that nurse feeding behavior ...

Research paper thumbnail of Larval starvation affects metabolic physiology and behaviors of adult honeybees

Larval nutrition in many solitary insects affects adult body size, fecundity and lifespan. In hon... more Larval nutrition in many solitary insects affects adult body size, fecundity and lifespan. In honeybees, malnutrition is largely responsible for colony losses. Although carbonization by workers is applied to malnourished larvae at early stage, the elder malnourished larvae are able to develop to adults. Here, we performed the starvation on honeybee larvae at the 5th instar stage to investigate the effects of larval nutrition on adult bees. We found newly emerged bees with the early starvation were smaller than controls, had smaller ovaries, and were less sensitive to sugar. In addition, these bees had higher glucose and trehalose titer in their hemolymph, had less protein content, and tended to reduce lipid store in the fat body. By looking at the gene expression and endocrine hormone in these treated bees, we found juvenile hormone (JH) titer was increased in the hemolymph and tyramine receptor (TYR) expression was decreased in the fat body. Overall, our study demonstrates that lar...

Research paper thumbnail of The Effects Of Season And Honey Bee Apis Mellifera) Genotype On Grafting Rates and Royal Jelly Production

Turkish Journal of Veterinary and Animal Sciences

Research paper thumbnail of Early life stage nutrition affects adult morphology and metabolisms in honey bees

As eusocial insects, honey bee brood is taken care of by nurses (young worker bees). Although nur... more As eusocial insects, honey bee brood is taken care of by nurses (young worker bees). Although nurses control overall the quality of new generation of workers, the colony nutrition state and environmental nutrition flow affects worker body size and ovariole number. Previous studies have shown that ovariole number is an important factor influencing worker gustatory responsiveness to sugar, when workers forage and what workers forage. Here, we performed short-term starvation on fifth instar larvae and monitored ovariole number, body mass and metabolic rate in adult bees. We found the bees with starvation treatment were smaller, had less ovariole number and higher metabolic rate. Their respiratory quotient (RQ) suggest they used sugar, protein and lipid for their energy fuels, whereas the controls used pure sugars. We also measured the metabolic stores in fat bodies and thoraces which are main tissues to store lipid and glycogen in honey bees. And we also measured glucose and trehalose ...

Research paper thumbnail of Morphometric Identification of Queens, Workers and Intermediates in In Vitro Reared Honey Bees (Apis mellifera)

PloS one, 2015

In vitro rearing is an important and useful tool for honey bee (Apis mellifera L.) studies. Howev... more In vitro rearing is an important and useful tool for honey bee (Apis mellifera L.) studies. However, it often results in intercastes between queens and workers, which are normally are not seen in hive-reared bees, except when larvae older than three days are grafted for queen rearing. Morphological classification (queen versus worker or intercastes) of bees produced by this method can be subjective and generally depends on size differences. Here, we propose an alternative method for caste classification of female honey bees reared in vitro, based on weight at emergence, ovariole number, spermatheca size and size and shape, and features of the head, mandible and basitarsus. Morphological measurements were made with both traditional morphometric and geometric morphometrics techniques. The classifications were performed by principal component analysis, using naturally developed queens and workers as controls. First, the analysis included all the characters. Subsequently, a new analysis...

Research paper thumbnail of Effect of Supplemental Feeding of Honeybee (Hymenoptera: Apidae) Populations and the Economic Value of Supplemental Feeding for Production of Package-Bees

Journal of Economic Entomology, 1984

ABSTRACT

Research paper thumbnail of An Investigation on Some Diseases and Parasites of Bumblebee Queens (Bombus terrestris L.) in Turkey

Pakistan Journal of Biological Sciences, 2006

ABSTRACT The mated bumblebee queens overwinter in the soil and they make nests under the ground t... more ABSTRACT The mated bumblebee queens overwinter in the soil and they make nests under the ground they come into contact with many ground dwelling pathogens and parasites. These pathogens and parasites may kill the queen. This study was conducted to investigated the occur some diseases and parasites on 578 mated Bombus terrestris L. queens collected from Adana, Mersin, Antalya and Bodrum regions in Turkey. For Nosema bombi , the highest infestation ratios were found in Bodrum ecotype (17.48%), for Apicystis bombi , the highest infestation ratios were found in Bodrum ecotype (8.54%), for Crithidia bombi , the highest infestation ratios were found in Bodrum ecotype (9.76%), for bacteria, the highest infestation ratios were found in Mersin ecotype (39.09%), for fungus, the highest infestation ratios were found in Mersin ecotype (17.27%), for internal parasites ( Locustacarus buchneri ), the highest infestation ratios were found in Bodrum ecotype (13.01%) and for external mites ( Kutzinia laevis , Scutacarus acarorus , Parasitus fucorum ) the highest infestation ratios were found in Antalya ecotype (41.44%, respectively).