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Hasan Sevgili

ORDU UNIVERSITY, Biology, Faculty Member

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Phone: +90 452 2345010/1403
Address: Ordu University
Faculty of Art and Science
Department of Biology
Zoology
Cumhuriyet Campus
Turnasuyu/Ordu
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Papers by Hasan Sevgili

New records of springtail fauna (Hexapoda: Collembola: Entomobryomorpha)from Ordu Province in Turkey

TURKISH JOURNAL OF ZOOLOGY, 2017

This study aims to elucidate the Collembola fauna of the province of Ordu, which is situated betw... more This study aims to elucidate the Collembola fauna of the province of Ordu, which is situated between the Middle and Eastern Black Sea regions of Turkey. Although a large number of Collembolan specimens had been collected, only Entomobryomorpha species were given emphasis. From 44 different sampled localities of the province of Ordu, we recorded 6 families, 14 genera, and 28 species. Six of these species were previously recorded and 20 of them are new records for Turkey. The results were not surprising, considering that the sampled region had not been studied previously, quite like many habitats in Turkey. With our 20 new records (Entomobryomorpha), the grand total of the springtail fauna of Turkey is increased to 73 species. This represents an increase of almost 40% of the current list of known species. These numbers show us that the diversity of Collembola in Turkey is not thoroughly known and it is clear that numerous species remain undiscovered or undescribed.

İki Çalı Çekirgesi Üzerinde Doğal Bağışıklık Parametrelerinden Fenoloksidaz Aktivitesi Ile Litik Aktivitenin Ve Hemolimfteki Protein Konsantrasyonunun Yöntemsel Olarak Belirlenmesi

Omurgasizlarda dogal bagisiklik sistemi patojenlere karsi aktive olan oldukca cesitli ve ozgun te... more Omurgasizlarda dogal bagisiklik sistemi patojenlere karsi aktive olan oldukca cesitli ve ozgun tepkiler iceren humoral aktivitelere sahiptir. Boceklerde, bu onemli anahtar immun parametrelerden ikisi fenoloksidaz yolagi ve litik aktivitedir. Lizozimler bakteri hucre duvarindaki peptidoglikanlari cozen bir grup enzim olup pek cok bocek grubunda bakteri savunmasi ile baglantilidir. Litik aktivite bakteri hucrelerinin hemolimfteki tahrip yeteneginin in vitro olarak olculmesiyle saptanabilir. Fenoloksidaz omurgasizlarin immun sisteminde anahtar bir enzim olup, hemolimfte yabanci bir cisim saptandiginda salgilanir. Dolayisiyla fenoloksidaz aktivitesi (PO) organizmalarin yabanci istilacilara karsi savunmada rol alan immun sistemin yetenegiyle iliskilidir. Bu calismada ilk kez barbitistin (Orthoptera: Phaneropterinae) calicekirgelerinden iki turde (Isophya speciosa, Poecilimon similis), bu iki anahtar immun parametrenin olculmesi yontemi sinanmistir. Her iki tur icin ayni yastaki 10 erkek ...

Bioacoustics of poorly known Poecilimon taxa (Insecta: Orthoptera: Tettigoniidae) with redescriptions of P. pechevi and P. stschelkanovzevi

Zootaxa

The genus Poecilimon has been object of several studies dealing with its systematics, sound commu... more The genus Poecilimon has been object of several studies dealing with its systematics, sound communication and evolution. Yet, published data contradict in the classification, while many taxa are still insufficiently known. In the present study we supplement the knowledge of 13 poorly known species and one additional subspecies with data on their sound communication and/or morphology. Most species concerned here are classified within two acoustic groups. First group includes P. celebi, P. obtusicercus and P. toros, showing typical characteristics of the P. syriacus group. Second group is more heterogeneous. Among that, P. pechevi, P. armeniacus, P. harveyi, P. guichardi, P. haydari, P. doga, P. davisi and P. excisus present a song pattern similar to that of P. ampliatus. In addition, P. ataturki is also quite similar in basic song structure to the latter but differs in its fine song structure. Poecilimon stschelkanovzevi, with unclear relationships, is described morphologically in de...

Male Bush-Crickets in Female-Biased Environment Allocate Fewer Sperm Per Ejaculation

Entomological News

Sex differences in immunity in a natural population of bush-cricket (Orthoptera: Phaneropterinae)

Biologia

Biodiversity in Urban environments of Ordu City and Nearby Areas: Mammals, Birds, Reptiles and Amphibians

Hacettepe Journal of Biology and Chemistry, 2016

B u çalışmada Ordu ilinin karasal omurgalı türleri ilk kez listelenmiştir. Arazi çalışması Ordu ş... more B u çalışmada Ordu ilinin karasal omurgalı türleri ilk kez listelenmiştir. Arazi çalışması Ordu şehri ve yakın çevresinde 2011-2015 yılları arasında gerçekleştirilmiştir. Arazi çalışmaları doğrudan gözlem, fotoğraflama, fotokapan ve video kullanılarak farklı yöntemlerle gerçekleştirilmiştir. Tür listesi Ordu şehri ve civarında yapılmış çalışmalardan elde edilen kayıtlar ve profesyonel doğa fotoğrafçılarının gözlemlerini de yansıtmaktadır. Genel olarak, toplamda 219 adet karasal omurgalı türü (168 kuş, 40 memeli, 7 sürüngen, 4 kurbağa) tespit edilmiş ve bunların çok az bir kısmının tehlike altında olduğu anlaşılmaktadır. Koruma statüleri bakımından dikkat çeken türler olarak; Emys orbicularis, Aythya nyroca, Puffinus yelkouan, Pelecanus crispus, Saxicola maurus, Tetrax tetrax, Rhinolophus euryale, Miniopterus schreibersii, Lutra lutra verilebilir. Akkaşlı Kirazkuşunun (Emberiza rustica), Türkiye'den 3. kaydı bu çalışma ile verilmektedir. Karadeniz bölgesinde Karaca (Capreolus capreolus)'nın birçok kaydının daha çok dağlık bölgelerle sınırlı kalmasına rağmen, bu çalışmada şehirleşen alanda da fotokapan ile tespit edilmiştir. Bu çalışmadan elde edilen sonuçlar, Ordu şehri ve yakın civarının karasal omurgalı çeşitliliğinin hala yüksek olduğu ve şehir ile doğal yaşam habitatları arasındaki çevrelerin şehir biyoçeşitliliğinin korunmasında önemli olduğuna işaret etmektedir.

No evidence for strategic male mating effort in response to female weight in a bushcricket

Behaviour, Sep 30, 2007

Theoretical models predict that males should allocate sperm in response to female quality and emp... more Theoretical models predict that males should allocate sperm in response to female quality and empirical studies have shown that fecundity traits including age, mass and mating status can influence male sperm allocation strategies. We tested whether female size has an influence on sperm allocation in the bushcricket Poecilimon jonicus jonicus (Orthoptera: Phaneropterinae). Contrary to other studies, we found neither evidence of strategic sperm allocation in response to female size nor an effect of female size on spermatophore size. Male age and mating history was positively related to sperm number during sequential matings, but had no effect on spermatophylax or ampulla weight. Spermatophore weight, but not sperm number, was positively correlated with male body weight. Ampulla weight was positively correlated with spermatophylax weight.

A new species of bushcricket (Orthoptera: Tettigoniidae) of the Palaearctic genus Isophya (Phaneropterinae) from Turkey

Entomological News, 2003

A re-assessment of the Poecilimon syriacus group (Orthoptera Tettigonioidea, Phaneropteridae) based on bioacoustics, morphology and molecular data

Insect Systematics Evolution, Sep 30, 2008

In this paper a combination of characters is described by which Poecilimon species (Orthoptera, T... more In this paper a combination of characters is described by which Poecilimon species (Orthoptera, Tettigonioidea, Phaneropteridae) can be recognised as members of the P. syriacus group. All species occur in or around Anatolia – from the island of Samos in the West and the provinces of Artvin and Bitlis in the East to Jerusalem in the South. The molecular data (Ullrich 2007) suggest the following not completely resolved relationship (ersisi (syriacus, (karakushi, (angulatus, obtusicercus n. sp.)), (xenocercus, karabukensis), ((izmirensis, ege) serratus))), while P. uvarovi and P. adentatus as well as P. kutahiensis (molecular data missing) are also considered to belong to the group according to song and/or morphology. The morphological data previously used to define the group are not sufficient to recognize all of its members. Some species differed distinctly in the structure of male genitalia, but the calling songs of all species studied are characterized by an unusually high syllable repetition rate and low number of impulses per syllable. Thus the evolution of genitalia seems to be faster than that of song patterns.

The Orthoptera of Şanliurfa province from the Mesopotamian part of Turkey

Http Dx Doi Org 10 1080 11250000009356316, Jan 28, 2009

and-conditions-of-access.pdf This article may be used for research, teaching and private study pu... more and-conditions-of-access.pdf This article may be used for research, teaching and private study purposes. Any substantial or systematic reproduction, redistribution , reselling , loan or sub-licensing, systematic supply or distribution in any form to anyone is expressly forbidden. The publisher does not give any warranty express or implied or make any representation that the contents will be complete or accurate or up to date. The accuracy of any instructions, formulae and drug doses should be independently verified with primary sources. The publisher shall not be liable for any loss, actions, claims, proceedings, demand or costs or damages whatsoever or howsoever caused arising directly or indirectly in connection with or arising out of the use of this material.

Conocephalus (Xiphidion) concolor peneri Harz, 1970 (Orthoptera: Tettigoniidae), a new record for Turkey

Turkish Journal of Entomology

Orthoptera fauna of Kemaliye (Erzincan)

I n this study, Orthoptera fauna of Kemaliye (Erzincan) was investigated. In Kemaliye, 91 species... more I n this study, Orthoptera fauna of Kemaliye (Erzincan) was investigated. In Kemaliye, 91 species/subspecies belonging to 52 genera within 9 families were confirmed to occur. Of these species, 11 species of Tettigoniidae, 1 species of Raphidophoridae, 4 species of Pamphagidae, 5 species of Acrididae are endemic to Anatolia.

Temperature−Dependent Immune Investment in Insects

As temperatures decrease, many insects increase the amount of melanin in their cuticle for a vari... more As temperatures decrease, many insects increase the amount of melanin in their cuticle for a variety of purposes; including improved thermoregulation or desiccation resistance. However, melanin is also central to insect immunity, leading to the novel hypothesis that the thermal environment indirectly shapes immune function via direct selection on cuticle color. If true, then then insect immune investment may be significantly constrained in warm environments where melanin investment is expected to be low, but infection risk high. Here, we address this hypothesis in the cricket Allonemobius socius and in the fruit fly Drosophila melanogaster. We found that individuals reared in a "warm" environment (28°C) exhibited lighter cuticles and inferior bacterial defense compared with those in a "cool" environment (22°C; immune assays were conducted at 25°C to minimize treatment metabolic rate differences). Furthermore, we found that crickets from southern (warmer) latitude...

Morphology and bioacoustics of the Isophya major group (Orthoptera, Tettigoniidae, Phaneropterinae): a species complex in Anatolia and Cyprus

European Journal of Entomology

Mating Behavior and Spermatophore Characteristics in Two Closely Related Bushcricket Species of the Genus Phonochorion (Orthoptera: Phaneropterinae)

Journal of Insect Behavior, 2015

ABSTRACT Bushcrickets comprise an important group of model organisms, which are intensively studi... more ABSTRACT Bushcrickets comprise an important group of model organisms, which are intensively studied to understand the evolution of mating behavior. During the mating process, the male bushcricket transfers a costly and edible spermatophore consisting of two parts to the female. This unique behavior makes bushcricket species appropriate study organisms for investigating spermatophore size variations across entire bushcricket family (Tettigoniidae). The functions of the spermatophylax and the ampulla, which constitute the spermatophore, have been addressed in many studies. Although the costs and benefits of mating for male and female bushcrickets may vary depending on species, there are some common evolutionary traits. In the present study, mating behaviors and spermatophore characteristics of two endemic bushcricket species, Phonochorion uvarovi and P. artvinensis, distributed at the high altitudes of the Kaçkar Mountains, northeastern Turkey, were examined. The data on two closely related species belonging to the genus of Phonochorion show that they have different reproductive investments in terms of spermatophore and sperm numbers in spite of similar habitat and nutritional preferences. P. artvinensis had a larger spermatophore, spermatophylax and ampulla, but transferred fewer sperm. Male age and weight had a significant effect on spermatophore, spermatophylax and ampulla investments in P. uvarovi while only male weight was a significant factor in P. artvinensis. A positive relationship between the spermatophylax and the ampulla weights in both species supports the ejaculate protection hypothesis in the Phonochorion species. Even though further studies on Phonochorion should be conducted to provide a more clear comparison with other groups in the barbitistine, this study demonstrates that both P. uvarovi and P. artvinensis make little spermatophore investment relative to their body size in comparison to other barbitistines.

Spermatophore allocation strategy over successive matings in the bushcricket Isophya sikorai (Orthoptera Phaneropterinae)

Ethology Ecology & Evolution, 2014

During mating, male bushcrickets transfer edible spermatophores that consist of a large sperm-fre... more During mating, male bushcrickets transfer edible spermatophores that consist of a large sperm-free spermatophylax and a sperm-containing ampulla. The effect of consecutive matings on nuptial gift and sperm numbers in the bushcricket Isophya sikorai was examined. Males and females differed in body weight and mating history influenced their weight. Males differed in spermatophore weight, as well as the weights of spermatophylax and ampulla. Spermatophore (spermatophylax + ampulla) and spermatophylax weight of I. sikorai increased with male body weight, but not with ampulla weight. Male age had a significant effect on sperm number, with older males producing more sperm. Female weight but not mating number of female had a significant effect on spermatophore weight. Males increased the size of the spermatophylax and sperm number when presented with larger females, but they did not adjust their ampulla weight. Male age affected spermatophylax weight when mating with heavier females. Males reached their maximal absolute sperm number point at about middle age of their mating period due to an age-dependent shift in covariation between the ampulla and spermatophylax weight and ampulla size increases over a longer period. We conclude that production of a spermatophore and its components is costly, therefore males should strategically adjust their spermatophore components among mating opportunities. Female quality is an important predictor in searching males, and those males transfer significantly larger spermatophore and ejaculates to higher quality (heavier) females. Briefly, this study suggest that male I. sikorai strategically allocate spermatophore size and sperm number with respect to various factors such as his age, sperm competition and female size in a multiple mating system.

A new species of the genus Isophya Brunner von Wattenwyl from Turkey (Orthoptera, Tettigoniidae, Phaneropterinae)

Tijdschrift voor Entomologie, 2003

Checklist of the springtails (Hexapoda: Collembola) of Turkey

Zoology in the Middle East, 2014

The influence of nuptial feeding and sperm transfer on the immunological cost of reproduction in the ground cricket Allonemobius socius

Physiological Entomology, 2014

Thermoregulatory strategy may shape immune investment in Drosophila melanogaster

Journal of Experimental Biology, 2014

As temperatures change, insects alter the amount of melanin in their cuticle to improve thermoreg... more As temperatures change, insects alter the amount of melanin in their cuticle to improve thermoregulation. However, melanin is also central to insect immunity, suggesting that thermoregulatory strategy may indirectly impact immune defense by altering the abundance of melanin pathway components (a hypothesis we refer to as thermoregulatory-dependent immune investment). This may be the case in the cricket Allonemobius socius, where warm environments (both seasonal and geographical) produced crickets with lighter cuticles and increased pathogen susceptibility. Unfortunately, the potential for thermoregulatory strategy to influence insect immunity has not been widely explored. Here we address the relationships between temperature, thermoregulatory strategy and immunity in the fruit fly Drosophila melanogaster. To this end, flies from two separate Canadian populations were reared in either a summer-or autumnlike environment. Shortly after adult eclosion, flies were moved to a common environment where their cuticle color and susceptibility to a bacterial pathogen (Pseudomonas aeruginosa) were measured. As with A. socius, individuals from summer-like environments exhibited lighter cuticles and increased pathogen susceptibility, suggesting that the thermoregulatory-immunity relationship is evolutionarily conserved across the hemimetabolous and holometabolous clades. If global temperatures continue to rise as expected, then thermoregulation might play an important role in host infection and mortality rates in systems that provide critical ecosystem services (e.g. pollination), or influence the prevalence of insect-vectored disease (e.g. malaria).

New records of springtail fauna (Hexapoda: Collembola: Entomobryomorpha)from Ordu Province in Turkey

TURKISH JOURNAL OF ZOOLOGY, 2017

This study aims to elucidate the Collembola fauna of the province of Ordu, which is situated betw... more This study aims to elucidate the Collembola fauna of the province of Ordu, which is situated between the Middle and Eastern Black Sea regions of Turkey. Although a large number of Collembolan specimens had been collected, only Entomobryomorpha species were given emphasis. From 44 different sampled localities of the province of Ordu, we recorded 6 families, 14 genera, and 28 species. Six of these species were previously recorded and 20 of them are new records for Turkey. The results were not surprising, considering that the sampled region had not been studied previously, quite like many habitats in Turkey. With our 20 new records (Entomobryomorpha), the grand total of the springtail fauna of Turkey is increased to 73 species. This represents an increase of almost 40% of the current list of known species. These numbers show us that the diversity of Collembola in Turkey is not thoroughly known and it is clear that numerous species remain undiscovered or undescribed.

İki Çalı Çekirgesi Üzerinde Doğal Bağışıklık Parametrelerinden Fenoloksidaz Aktivitesi Ile Litik Aktivitenin Ve Hemolimfteki Protein Konsantrasyonunun Yöntemsel Olarak Belirlenmesi

Omurgasizlarda dogal bagisiklik sistemi patojenlere karsi aktive olan oldukca cesitli ve ozgun te... more Omurgasizlarda dogal bagisiklik sistemi patojenlere karsi aktive olan oldukca cesitli ve ozgun tepkiler iceren humoral aktivitelere sahiptir. Boceklerde, bu onemli anahtar immun parametrelerden ikisi fenoloksidaz yolagi ve litik aktivitedir. Lizozimler bakteri hucre duvarindaki peptidoglikanlari cozen bir grup enzim olup pek cok bocek grubunda bakteri savunmasi ile baglantilidir. Litik aktivite bakteri hucrelerinin hemolimfteki tahrip yeteneginin in vitro olarak olculmesiyle saptanabilir. Fenoloksidaz omurgasizlarin immun sisteminde anahtar bir enzim olup, hemolimfte yabanci bir cisim saptandiginda salgilanir. Dolayisiyla fenoloksidaz aktivitesi (PO) organizmalarin yabanci istilacilara karsi savunmada rol alan immun sistemin yetenegiyle iliskilidir. Bu calismada ilk kez barbitistin (Orthoptera: Phaneropterinae) calicekirgelerinden iki turde (Isophya speciosa, Poecilimon similis), bu iki anahtar immun parametrenin olculmesi yontemi sinanmistir. Her iki tur icin ayni yastaki 10 erkek ...

Bioacoustics of poorly known Poecilimon taxa (Insecta: Orthoptera: Tettigoniidae) with redescriptions of P. pechevi and P. stschelkanovzevi

Zootaxa

The genus Poecilimon has been object of several studies dealing with its systematics, sound commu... more The genus Poecilimon has been object of several studies dealing with its systematics, sound communication and evolution. Yet, published data contradict in the classification, while many taxa are still insufficiently known. In the present study we supplement the knowledge of 13 poorly known species and one additional subspecies with data on their sound communication and/or morphology. Most species concerned here are classified within two acoustic groups. First group includes P. celebi, P. obtusicercus and P. toros, showing typical characteristics of the P. syriacus group. Second group is more heterogeneous. Among that, P. pechevi, P. armeniacus, P. harveyi, P. guichardi, P. haydari, P. doga, P. davisi and P. excisus present a song pattern similar to that of P. ampliatus. In addition, P. ataturki is also quite similar in basic song structure to the latter but differs in its fine song structure. Poecilimon stschelkanovzevi, with unclear relationships, is described morphologically in de...

Male Bush-Crickets in Female-Biased Environment Allocate Fewer Sperm Per Ejaculation

Entomological News

Sex differences in immunity in a natural population of bush-cricket (Orthoptera: Phaneropterinae)

Biologia

Biodiversity in Urban environments of Ordu City and Nearby Areas: Mammals, Birds, Reptiles and Amphibians

Hacettepe Journal of Biology and Chemistry, 2016

B u çalışmada Ordu ilinin karasal omurgalı türleri ilk kez listelenmiştir. Arazi çalışması Ordu ş... more B u çalışmada Ordu ilinin karasal omurgalı türleri ilk kez listelenmiştir. Arazi çalışması Ordu şehri ve yakın çevresinde 2011-2015 yılları arasında gerçekleştirilmiştir. Arazi çalışmaları doğrudan gözlem, fotoğraflama, fotokapan ve video kullanılarak farklı yöntemlerle gerçekleştirilmiştir. Tür listesi Ordu şehri ve civarında yapılmış çalışmalardan elde edilen kayıtlar ve profesyonel doğa fotoğrafçılarının gözlemlerini de yansıtmaktadır. Genel olarak, toplamda 219 adet karasal omurgalı türü (168 kuş, 40 memeli, 7 sürüngen, 4 kurbağa) tespit edilmiş ve bunların çok az bir kısmının tehlike altında olduğu anlaşılmaktadır. Koruma statüleri bakımından dikkat çeken türler olarak; Emys orbicularis, Aythya nyroca, Puffinus yelkouan, Pelecanus crispus, Saxicola maurus, Tetrax tetrax, Rhinolophus euryale, Miniopterus schreibersii, Lutra lutra verilebilir. Akkaşlı Kirazkuşunun (Emberiza rustica), Türkiye'den 3. kaydı bu çalışma ile verilmektedir. Karadeniz bölgesinde Karaca (Capreolus capreolus)'nın birçok kaydının daha çok dağlık bölgelerle sınırlı kalmasına rağmen, bu çalışmada şehirleşen alanda da fotokapan ile tespit edilmiştir. Bu çalışmadan elde edilen sonuçlar, Ordu şehri ve yakın civarının karasal omurgalı çeşitliliğinin hala yüksek olduğu ve şehir ile doğal yaşam habitatları arasındaki çevrelerin şehir biyoçeşitliliğinin korunmasında önemli olduğuna işaret etmektedir.

No evidence for strategic male mating effort in response to female weight in a bushcricket

Behaviour, Sep 30, 2007

Theoretical models predict that males should allocate sperm in response to female quality and emp... more Theoretical models predict that males should allocate sperm in response to female quality and empirical studies have shown that fecundity traits including age, mass and mating status can influence male sperm allocation strategies. We tested whether female size has an influence on sperm allocation in the bushcricket Poecilimon jonicus jonicus (Orthoptera: Phaneropterinae). Contrary to other studies, we found neither evidence of strategic sperm allocation in response to female size nor an effect of female size on spermatophore size. Male age and mating history was positively related to sperm number during sequential matings, but had no effect on spermatophylax or ampulla weight. Spermatophore weight, but not sperm number, was positively correlated with male body weight. Ampulla weight was positively correlated with spermatophylax weight.

A new species of bushcricket (Orthoptera: Tettigoniidae) of the Palaearctic genus Isophya (Phaneropterinae) from Turkey

Entomological News, 2003

A re-assessment of the Poecilimon syriacus group (Orthoptera Tettigonioidea, Phaneropteridae) based on bioacoustics, morphology and molecular data

Insect Systematics Evolution, Sep 30, 2008

In this paper a combination of characters is described by which Poecilimon species (Orthoptera, T... more In this paper a combination of characters is described by which Poecilimon species (Orthoptera, Tettigonioidea, Phaneropteridae) can be recognised as members of the P. syriacus group. All species occur in or around Anatolia – from the island of Samos in the West and the provinces of Artvin and Bitlis in the East to Jerusalem in the South. The molecular data (Ullrich 2007) suggest the following not completely resolved relationship (ersisi (syriacus, (karakushi, (angulatus, obtusicercus n. sp.)), (xenocercus, karabukensis), ((izmirensis, ege) serratus))), while P. uvarovi and P. adentatus as well as P. kutahiensis (molecular data missing) are also considered to belong to the group according to song and/or morphology. The morphological data previously used to define the group are not sufficient to recognize all of its members. Some species differed distinctly in the structure of male genitalia, but the calling songs of all species studied are characterized by an unusually high syllable repetition rate and low number of impulses per syllable. Thus the evolution of genitalia seems to be faster than that of song patterns.

The Orthoptera of Şanliurfa province from the Mesopotamian part of Turkey

Http Dx Doi Org 10 1080 11250000009356316, Jan 28, 2009

and-conditions-of-access.pdf This article may be used for research, teaching and private study pu... more and-conditions-of-access.pdf This article may be used for research, teaching and private study purposes. Any substantial or systematic reproduction, redistribution , reselling , loan or sub-licensing, systematic supply or distribution in any form to anyone is expressly forbidden. The publisher does not give any warranty express or implied or make any representation that the contents will be complete or accurate or up to date. The accuracy of any instructions, formulae and drug doses should be independently verified with primary sources. The publisher shall not be liable for any loss, actions, claims, proceedings, demand or costs or damages whatsoever or howsoever caused arising directly or indirectly in connection with or arising out of the use of this material.

Conocephalus (Xiphidion) concolor peneri Harz, 1970 (Orthoptera: Tettigoniidae), a new record for Turkey

Turkish Journal of Entomology

Orthoptera fauna of Kemaliye (Erzincan)

I n this study, Orthoptera fauna of Kemaliye (Erzincan) was investigated. In Kemaliye, 91 species... more I n this study, Orthoptera fauna of Kemaliye (Erzincan) was investigated. In Kemaliye, 91 species/subspecies belonging to 52 genera within 9 families were confirmed to occur. Of these species, 11 species of Tettigoniidae, 1 species of Raphidophoridae, 4 species of Pamphagidae, 5 species of Acrididae are endemic to Anatolia.

Temperature−Dependent Immune Investment in Insects

As temperatures decrease, many insects increase the amount of melanin in their cuticle for a vari... more As temperatures decrease, many insects increase the amount of melanin in their cuticle for a variety of purposes; including improved thermoregulation or desiccation resistance. However, melanin is also central to insect immunity, leading to the novel hypothesis that the thermal environment indirectly shapes immune function via direct selection on cuticle color. If true, then then insect immune investment may be significantly constrained in warm environments where melanin investment is expected to be low, but infection risk high. Here, we address this hypothesis in the cricket Allonemobius socius and in the fruit fly Drosophila melanogaster. We found that individuals reared in a "warm" environment (28°C) exhibited lighter cuticles and inferior bacterial defense compared with those in a "cool" environment (22°C; immune assays were conducted at 25°C to minimize treatment metabolic rate differences). Furthermore, we found that crickets from southern (warmer) latitude...

Morphology and bioacoustics of the Isophya major group (Orthoptera, Tettigoniidae, Phaneropterinae): a species complex in Anatolia and Cyprus

European Journal of Entomology

Mating Behavior and Spermatophore Characteristics in Two Closely Related Bushcricket Species of the Genus Phonochorion (Orthoptera: Phaneropterinae)

Journal of Insect Behavior, 2015

ABSTRACT Bushcrickets comprise an important group of model organisms, which are intensively studi... more ABSTRACT Bushcrickets comprise an important group of model organisms, which are intensively studied to understand the evolution of mating behavior. During the mating process, the male bushcricket transfers a costly and edible spermatophore consisting of two parts to the female. This unique behavior makes bushcricket species appropriate study organisms for investigating spermatophore size variations across entire bushcricket family (Tettigoniidae). The functions of the spermatophylax and the ampulla, which constitute the spermatophore, have been addressed in many studies. Although the costs and benefits of mating for male and female bushcrickets may vary depending on species, there are some common evolutionary traits. In the present study, mating behaviors and spermatophore characteristics of two endemic bushcricket species, Phonochorion uvarovi and P. artvinensis, distributed at the high altitudes of the Kaçkar Mountains, northeastern Turkey, were examined. The data on two closely related species belonging to the genus of Phonochorion show that they have different reproductive investments in terms of spermatophore and sperm numbers in spite of similar habitat and nutritional preferences. P. artvinensis had a larger spermatophore, spermatophylax and ampulla, but transferred fewer sperm. Male age and weight had a significant effect on spermatophore, spermatophylax and ampulla investments in P. uvarovi while only male weight was a significant factor in P. artvinensis. A positive relationship between the spermatophylax and the ampulla weights in both species supports the ejaculate protection hypothesis in the Phonochorion species. Even though further studies on Phonochorion should be conducted to provide a more clear comparison with other groups in the barbitistine, this study demonstrates that both P. uvarovi and P. artvinensis make little spermatophore investment relative to their body size in comparison to other barbitistines.

Spermatophore allocation strategy over successive matings in the bushcricket Isophya sikorai (Orthoptera Phaneropterinae)

Ethology Ecology & Evolution, 2014

During mating, male bushcrickets transfer edible spermatophores that consist of a large sperm-fre... more During mating, male bushcrickets transfer edible spermatophores that consist of a large sperm-free spermatophylax and a sperm-containing ampulla. The effect of consecutive matings on nuptial gift and sperm numbers in the bushcricket Isophya sikorai was examined. Males and females differed in body weight and mating history influenced their weight. Males differed in spermatophore weight, as well as the weights of spermatophylax and ampulla. Spermatophore (spermatophylax + ampulla) and spermatophylax weight of I. sikorai increased with male body weight, but not with ampulla weight. Male age had a significant effect on sperm number, with older males producing more sperm. Female weight but not mating number of female had a significant effect on spermatophore weight. Males increased the size of the spermatophylax and sperm number when presented with larger females, but they did not adjust their ampulla weight. Male age affected spermatophylax weight when mating with heavier females. Males reached their maximal absolute sperm number point at about middle age of their mating period due to an age-dependent shift in covariation between the ampulla and spermatophylax weight and ampulla size increases over a longer period. We conclude that production of a spermatophore and its components is costly, therefore males should strategically adjust their spermatophore components among mating opportunities. Female quality is an important predictor in searching males, and those males transfer significantly larger spermatophore and ejaculates to higher quality (heavier) females. Briefly, this study suggest that male I. sikorai strategically allocate spermatophore size and sperm number with respect to various factors such as his age, sperm competition and female size in a multiple mating system.

A new species of the genus Isophya Brunner von Wattenwyl from Turkey (Orthoptera, Tettigoniidae, Phaneropterinae)

Tijdschrift voor Entomologie, 2003

Checklist of the springtails (Hexapoda: Collembola) of Turkey

Zoology in the Middle East, 2014

The influence of nuptial feeding and sperm transfer on the immunological cost of reproduction in the ground cricket Allonemobius socius

Physiological Entomology, 2014

Thermoregulatory strategy may shape immune investment in Drosophila melanogaster

Journal of Experimental Biology, 2014

As temperatures change, insects alter the amount of melanin in their cuticle to improve thermoreg... more As temperatures change, insects alter the amount of melanin in their cuticle to improve thermoregulation. However, melanin is also central to insect immunity, suggesting that thermoregulatory strategy may indirectly impact immune defense by altering the abundance of melanin pathway components (a hypothesis we refer to as thermoregulatory-dependent immune investment). This may be the case in the cricket Allonemobius socius, where warm environments (both seasonal and geographical) produced crickets with lighter cuticles and increased pathogen susceptibility. Unfortunately, the potential for thermoregulatory strategy to influence insect immunity has not been widely explored. Here we address the relationships between temperature, thermoregulatory strategy and immunity in the fruit fly Drosophila melanogaster. To this end, flies from two separate Canadian populations were reared in either a summer-or autumnlike environment. Shortly after adult eclosion, flies were moved to a common environment where their cuticle color and susceptibility to a bacterial pathogen (Pseudomonas aeruginosa) were measured. As with A. socius, individuals from summer-like environments exhibited lighter cuticles and increased pathogen susceptibility, suggesting that the thermoregulatory-immunity relationship is evolutionarily conserved across the hemimetabolous and holometabolous clades. If global temperatures continue to rise as expected, then thermoregulation might play an important role in host infection and mortality rates in systems that provide critical ecosystem services (e.g. pollination), or influence the prevalence of insect-vectored disease (e.g. malaria).