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Articles 1741 - 1770 of 2109
Full-Text Articles in Life Sciences
Research On The Herpetofauna Of Murat Mountain (Kütahya-Uşak), Adem Özdemi̇r, İbrahi̇m Baran
Research On The Herpetofauna Of Murat Mountain (Kütahya-Uşak), Adem Özdemi̇r, İbrahi̇m Baran
Turkish Journal of Zoology
In this study, the amphibians and reptilians of Murat Mountain, where only mountain frogs have been investigated so far, are introduced. A total of 99 specimens from 15 different species were collected. Four of the species belong to anurans, one belongs to tortoises, six belong to lizards and four belong to the snakes group.
The Effects Of Cimetidine And Ranitidine On Kidney Cortex Of Mus Musculus Albinus, Kadri̇ye Akgün Dar
The Effects Of Cimetidine And Ranitidine On Kidney Cortex Of Mus Musculus Albinus, Kadri̇ye Akgün Dar
Turkish Journal of Zoology
In this study, 4.3 µg/g cimetidine and 17 µg/g ranitidine were orally given to mice for two months. The effects of cimetidine and ranitidine on kidney cortical tissue were examined at light microscopical level. In both groups, it was detected that the tubules were separated by their lumen containing darkly stained remnant material. Vacuolization, destruction of apical membrane and decreased PAS positive reaction were observed in the apical membrane of proximal tubule epithelial cells. The nuclei of proximal and distal tubule cells were cylindrical. More excessively in the ranitidine treated group, widening of the tubule lumens and limited proximal tubule …
Observations On The Histomorphogical Structure Of Some Long Bones Of The Water Frog (Rana Bedriagae) From The İzmir Area, Uğur C. Eri̇şmi̇ş, Uğur Kaya, Hüseyi̇n Arikan
Observations On The Histomorphogical Structure Of Some Long Bones Of The Water Frog (Rana Bedriagae) From The İzmir Area, Uğur C. Eri̇şmi̇ş, Uğur Kaya, Hüseyi̇n Arikan
Turkish Journal of Zoology
Histomorphological structures of the femur and the second phalange of the second outer toe of the left frog leg were investigated using the decalcifying method in Rana bedriagae. Skeleton Growth Marks (SGMs) were clearly observed in Rana bedriagae and it was shown that the skeletochronological technique is convenient and applicable for the age determination of this species.
Muscle Fiber Types Of The Tunica Muscularis Externa At The Upper Part Of The Sparrow (Passer Domesticus) Esophagus, Fati̇me Geyi̇koğlu, Aysel Temelli̇, Abdullah Özkaral
Muscle Fiber Types Of The Tunica Muscularis Externa At The Upper Part Of The Sparrow (Passer Domesticus) Esophagus, Fati̇me Geyi̇koğlu, Aysel Temelli̇, Abdullah Özkaral
Turkish Journal of Zoology
Muscle fiber types of the tunica muscularis externa of the upper part of the sparrow esophagus were characterised by the method of myofibrillar adenosine triphosphatase (mATPase). Muscle fibers were described as type II and type III. Muscle fiber types were histochemically different from those of the esophagus of broiler ross. It is thought that this difference should be evaluated according to the functional difference between the esophagus of domestic and wild bird species.
Effect Of Temperature On Development, Sexual Maturation Time, Food Consumption And Body Weight Of Schistocerca Gregaria Forsk. (Orthoptera: Acrididae), N. Eylem Akman Gündüz, Adem Gülel
Effect Of Temperature On Development, Sexual Maturation Time, Food Consumption And Body Weight Of Schistocerca Gregaria Forsk. (Orthoptera: Acrididae), N. Eylem Akman Gündüz, Adem Gülel
Turkish Journal of Zoology
This study was carried out to determine the effect of temperature on the development, sexual maturation time, food consumption and body weight of S. gregaria, Forsk., at 25 and 30ºC. The insects were fed on fresh wheat sprouts (FWS) and bran (B). When the temperature was increased, both developmental time and attainment time to sexual maturation were shortened. Total nymphal developmental time at 25 and 30ºC was 32 and 22 days, respectively. Similarly, the average attainment time to sexual maturity was 33 days at 30ºC, whereas it was 52 days at 25ºC. The food consumption of the insects increased at …
Antimicrobial Agents: Their Combined Effects On Total Protein Content Of The Endoparasitoid Pimpla Turionellae L. (Hymenoptera: Ichneumonidae), Kemal Büyükgüzel
Antimicrobial Agents: Their Combined Effects On Total Protein Content Of The Endoparasitoid Pimpla Turionellae L. (Hymenoptera: Ichneumonidae), Kemal Büyükgüzel
Turkish Journal of Zoology
The effects of some antibiotics and antifungal agents in combination on the total protein content of young pupae of the hymenopterous endoparasitoid, Pimpla turionellae L., were investigated by rearing the larvae aseptically on chemically defined synthetic diets. These effects varied with the kinds and levels of the combination of antimicrobial agents in the diets. The combinations of antibiotics generally increased the total protein content according to their individual levels in the diets. Antifungal agent combinations caused a slight but significant increase in the total protein content. However, some tested combinations of nystatin with methyl p-hydroxybenzoate or cycloheximide significantly decreased the …
The Larval Development Of The Spider Crab Menaethiops Nodulosus (Nobili, 1905) (Crustacea, Decapoda, Majidae) Reared In The Laboratory, Farhana Shafiq Ghory, Feroz Akhtar Siddiqui
The Larval Development Of The Spider Crab Menaethiops Nodulosus (Nobili, 1905) (Crustacea, Decapoda, Majidae) Reared In The Laboratory, Farhana Shafiq Ghory, Feroz Akhtar Siddiqui
Turkish Journal of Zoology
The present paper is based on the larval development of a spider crab Menaethiops nodulosus (Nobili, 1905) reared in the laboratory. The genus Menaethiops is represented by twelve species from Indo-Pacific regions including M. bicornis Alcock, 1895. Later two more species M. gadaniensis Kazmi & Tirmizi and M. nodulosus (Nobili) were added to the marine fauna of Pakistan. The ovigerous female of M. nodulosus was collected from Buleji on October 28, 1996, prezoeae and first zoeae were obtained on November 13, 1996 and the first zoeae were segregated for further experiment. This species passes through two zoeal stages before moulting …
Effect Of Temperature Change On Maximum Swimming Speed Of Whiting, Merlangius Merlangus (Linnaeus, 1758), Hüseyi̇n Özbi̇lgi̇n
Effect Of Temperature Change On Maximum Swimming Speed Of Whiting, Merlangius Merlangus (Linnaeus, 1758), Hüseyi̇n Özbi̇lgi̇n
Turkish Journal of Zoology
Seasonal changes in sea temperature levels affect the swimming performance of fish. This study investigates if a change of 5°C from 7 to 12°C in water temperature has a significant effect on the maximum swimming performance of whiting, Merlangius merlangus, which is one of the most common species caught in the bottom trawl fisheries of the North Sea. The effect of this seasonal change on swimming performance was shown by two experiments. A temperature increase from 7°C to 12°C was shown to cause a decrease in the minimum twitch contraction time of the lateral muscle, when stimulated by an electric …
Astioglossimetra Karachiensis N. Gen., N. Sp. (Trematoda: Plagiorchiidae: Astiotrematinae) From The Marine Turtle Chelonia Mydas Of Karachi Coast, Fatima Mujib Bilqees, Nasira Khatoon, Aly Khan
Astioglossimetra Karachiensis N. Gen., N. Sp. (Trematoda: Plagiorchiidae: Astiotrematinae) From The Marine Turtle Chelonia Mydas Of Karachi Coast, Fatima Mujib Bilqees, Nasira Khatoon, Aly Khan
Turkish Journal of Zoology
A new trematode genus Astioglossimetra n. gen. has been erected to accommodate an undescribed species A. karachiensis n. gen., n. sp., from Chelonia mydas of the Karachi coast. The genus name refers to its relation to the genera Astiotrema Looss and Glossimetra Mehra of the family Plagiorchiidae and subfamily Astiotrematinae.
Cladocera And Copepoda (Crustacea) Fauna Of Lake Terkos (Durusu), Hüseyi̇n Güher
Cladocera And Copepoda (Crustacea) Fauna Of Lake Terkos (Durusu), Hüseyi̇n Güher
Turkish Journal of Zoology
Field studies were conducted by taking samples vertically and horizontally during a specific period of each month between April 2000 and March 2001 in Lake Terkos. A total of 28 species belonging to six families of Cladocera and 13 species from seven families of Copepoda are identified. Their known geographical distribution in Turkey have been given according to provinces.
Three Unrecorded Helophorus Fabricius, 1775 (Coleoptera, Hydrophilidae) Species For The Turkish Fauna, Ümi̇t İncekara, Abdullah Mart, Orhan Erman
Three Unrecorded Helophorus Fabricius, 1775 (Coleoptera, Hydrophilidae) Species For The Turkish Fauna, Ümi̇t İncekara, Abdullah Mart, Orhan Erman
Turkish Journal of Zoology
Three newly recorded Helophorus Fabricius, 1775 species for Turkish fauna, Helophorus (Rhopalhelophorus) fulgidicollis Motschulsky, 1860, H. (R.) similis Kuwert, 1887 and H. (R.) subarcuatus Rey, 1885, are compared against our specimens. Furthermore, their distribution in Turkey and around the world is presented.
Longitarsus Stragulatus (Foudras, 1860), (Coleoptera: Chrysomelidae, Alticinae) A New Record Of Flea Beetles For The Fauna Of Turkey, Ali̇ Gök, Mehmet Faruk Gürbüz
Longitarsus Stragulatus (Foudras, 1860), (Coleoptera: Chrysomelidae, Alticinae) A New Record Of Flea Beetles For The Fauna Of Turkey, Ali̇ Gök, Mehmet Faruk Gürbüz
Turkish Journal of Zoology
Longitarsus stragulatus (Foudras, 1860) (Coleoptera: Chrysomelidae, Alticinae) is recorded for the first time in Turkey. The taxonomical features of the species are briefly described, and its general distribution and aedeagal figures given.
First Records Of Oreodytes Seidlitz, 1887 (Dytiscidae, Coleoptera) From Turkey: Oreodytes Septentrionalis (Gyllenhal, 1826) And Oreodytes Davisii (Curtis, 1831), Ömer Köksal Erman, Orhan Erman
First Records Of Oreodytes Seidlitz, 1887 (Dytiscidae, Coleoptera) From Turkey: Oreodytes Septentrionalis (Gyllenhal, 1826) And Oreodytes Davisii (Curtis, 1831), Ömer Köksal Erman, Orhan Erman
Turkish Journal of Zoology
Oreodytes septentrionalis (Gyllenhal, 1826) and Oreodytes davisi (Curtis, 1831) are recorded in Turkey for the first time and are reviewed according to our specimens and their distributions around the world.
Two Macrochelid Species (Acari: Gamasida: Macrochelidae) New To Turkish Fauna, Ali̇ Nafi̇z Eki̇z, Raşi̇t Urhan
Two Macrochelid Species (Acari: Gamasida: Macrochelidae) New To Turkish Fauna, Ali̇ Nafi̇z Eki̇z, Raşi̇t Urhan
Turkish Journal of Zoology
Two macrochelid species, Macrocheles (Glyptholaspis) americana and M. (G.) fimicola, which are new to Turkish fauna, are examined. The morphological characters of these species are reviewed and figures are drawn. Moreover, their zoogeographical distributions and habitats are given.
On An Asaccus Elisae (F. Werner, 1895) (Sauria: Gekkonidae) Specimen Collected From The Vicinity Of Nusaybin, Mardin, Cemal Varol Tok, Mehmet Kutsay Atatür, Durmuş Ci̇han
On An Asaccus Elisae (F. Werner, 1895) (Sauria: Gekkonidae) Specimen Collected From The Vicinity Of Nusaybin, Mardin, Cemal Varol Tok, Mehmet Kutsay Atatür, Durmuş Ci̇han
Turkish Journal of Zoology
A single Asaccus elisae specimen, which was caught from the vicinity of Nusaybin, Mardin in SE Anatolia, was examined morphologically. The previous known locality of the species in Anatolia was Birecik, near Şanlıurfa.
Chromosomes Of Oedipoda Schochi Schochi And Acrotylus Insbricus (Orthoptera, Acrididae, Oedipodinae). Karyotypes And C- And G-Band Patterns, Şi̇fa Türkoğlu, Serdar Koca
Chromosomes Of Oedipoda Schochi Schochi And Acrotylus Insbricus (Orthoptera, Acrididae, Oedipodinae). Karyotypes And C- And G-Band Patterns, Şi̇fa Türkoğlu, Serdar Koca
Turkish Journal of Zoology
Chromosomes, with detalied karyotype information (number, shape, total length, relative length, arm ratio and centromeric index) and C- and G-band patterns of two species of grasshoppers belonging to the subfamily Oedipodinae in Turkey are described. The karyotype of Oedipoda schochi schochi with 2n O = 25 (X0) comprises eight pairs of metacentric, two pairs of submetacentric, one pair of acrocentric and one pair of subacrocentric autosomes, which come from 2n O = 23 through centric fission and the metacentric X chromosome, while Acrotylus insbricus with 2n O = 23 (X0) possesses metacentric autosomes, and the metacentric X chromosome.
Seasonal Fluctuation In The Rotifer Fauna Of Kesikköprü Dam Lake (Ankara, Turkey), Si̇bel Yi̇ği̇t
Seasonal Fluctuation In The Rotifer Fauna Of Kesikköprü Dam Lake (Ankara, Turkey), Si̇bel Yi̇ği̇t
Turkish Journal of Zoology
The individual and seasonal variations of 11 rotifer species identified in Kesikköprü Dam Lake were investigated from April 1995 to May 1996. Species-wise percentages were Polyarthra vulgaris 24.5%, Keratella quadrata 20.8%, Asplanchna priodonta 16.0%, Brachionus angularis 11.2%, Keratella cochlearis 8.8%, Synchaeta litoralis 7.0%, Lecane luna 4.0%, Notholca squamula 3.8%, Lepadella patella 1.6%, Notholca acuminata 1.4% and Colurella adriatica 0.7%. Apart from two seasonal peaks in spring and autumn, some species such as S. litoralis, L. luna, N. squamula, and C. adriatica showed smaller fluctuations other than during seasonal peaks. When the annual abundance of species was taken into consideration, P. …
The Toxic Effects Of Malathion (Organophosphate Insecticide) On The Daphnia Magna Straus, 1820 (Crustacea, Cladocera), Maryam Rassoulzadegan, Nusret Akyurtlakli
The Toxic Effects Of Malathion (Organophosphate Insecticide) On The Daphnia Magna Straus, 1820 (Crustacea, Cladocera), Maryam Rassoulzadegan, Nusret Akyurtlakli
Turkish Journal of Zoology
The toxic effects of technical grade (95 %) malathion and commercial (25 %) malathion were investigated on young (£ 24 h old) Daphnia magna in static acute toxicity tests (24 and 48 h). The culture of D. magna and toxicity tests were performed at 24 ± 1 ºC with a photoperiod of 16 h light and 8 h dark. To obtain a healthy population, the fecundity of each female in their life cycle was also investigated. The immobilization of daphnids was considered for determination of the 24 h / 48 h effective concentration (50 %). The EC50 values were found …
Impact Of Two Sublethal Concentrations Of Copper Chloride And Chlorine On The Excretory Products Of Crab Sesarma Quadratum (Fabricius), Santhana Valarmathi, Jayapaul Azariah
Impact Of Two Sublethal Concentrations Of Copper Chloride And Chlorine On The Excretory Products Of Crab Sesarma Quadratum (Fabricius), Santhana Valarmathi, Jayapaul Azariah
Turkish Journal of Zoology
Excretion in estuarine animals is considered to be an important factor in assessing their physiological status. The pattern of oxygen consumption and excretion patterns (ammonia and nitrite) in medium size mud crabs of S. quadratum (3 to 4 g weight) were studied under laboratory conditions at two sublethal concentrations of 1/10 and 1/3 of the LC_{50} value of copper chloride and chlorine. The rates of oxygen consumption and excreted products were negatively correlated to the sublethal concentrations of the toxicant. Reduced rates of oxygen consumption and excretion of ammonia and nitrite were observed when exposed to these sublethal concentrations.
A Faunistic Study On Asiobates Thomson, 1859 (Hydraenidae, Polyphaga, Coleoptera) Species, Ahmet Kasapoğlu, Orhan Erman
A Faunistic Study On Asiobates Thomson, 1859 (Hydraenidae, Polyphaga, Coleoptera) Species, Ahmet Kasapoğlu, Orhan Erman
Turkish Journal of Zoology
A list of Asiobates species known from Turkey and their distribution worldwide are presented. A brief review and discussion of the new records, Ochthebius (Asiobates) cantabricus Balfour-Browne, 1978 and Ochthebius (Asiobates) remotus Reitter, 1887, has also been added.
A New Record Of A Water Mite (Acari, Hydrachnellae) For The Turkish Fauna: Gnaphiscus Setosus Koenike, 1898, Ahmet Bursali, Muhli̇s Özkan
A New Record Of A Water Mite (Acari, Hydrachnellae) For The Turkish Fauna: Gnaphiscus Setosus Koenike, 1898, Ahmet Bursali, Muhli̇s Özkan
Turkish Journal of Zoology
The morphological characters and geographical distribution of Gnaphiscus setosus Koenike, 1898, a new record for the Turkish fauna, are given.
Micrommata Virescens (Clerck, 1757), A New Species For The Spider Fauna Of Turkey (Araneae, Sparassidae), Abdullah Bayram, Sevda Özdağ
Micrommata Virescens (Clerck, 1757), A New Species For The Spider Fauna Of Turkey (Araneae, Sparassidae), Abdullah Bayram, Sevda Özdağ
Turkish Journal of Zoology
The morphological characteristics of Micrommata virescens (Clerck, 1757), which is recorded for the first time in Turkey, are given.
Relative Importance Of Food Items In Feeding Of Chondrostoma Regium Heckel, 1843, And Its Relation With The Time Of Annulus Formation, Aysun Gümüş, Mahmut Yilmaz, Nazmi̇ Polat
Relative Importance Of Food Items In Feeding Of Chondrostoma Regium Heckel, 1843, And Its Relation With The Time Of Annulus Formation, Aysun Gümüş, Mahmut Yilmaz, Nazmi̇ Polat
Turkish Journal of Zoology
In this study, we analyzed the relative importance of food items of Chondrostoma regium Heckel, 1843. A total of 145 individuals were sampled between April 1993 and March 1994 in Suat Uğurlu Dam Lake. Stomach content analysis was used to determine dietary composition. Relative measures of food item quantity were estimated by two different approaches: the Index of Relative Importance (IRI) and the Geometric Index of Importance (GII). The results from these indices were compared and the most reliable way of estimating dietary composition was discussed. Navicula, Cymbella and Synedra were the most frequently consumed organisms. As C. regium mostly …
New Distributional Records For Rana Bedriagae Caralitana In Anatolia, Uğur Kaya, İ. Ethem Çevi̇k, Uğur C. Eri̇şmi̇ş
New Distributional Records For Rana Bedriagae Caralitana In Anatolia, Uğur Kaya, İ. Ethem Çevi̇k, Uğur C. Eri̇şmi̇ş
Turkish Journal of Zoology
We conducted a herpetofaunal survey on the southern part of the Lake District in Anatolia searching and documenting new sites for herptile species. During the two years of our study three new sites, Gencek Lake (Derebucak/Konya), Derebucak (Konya) and Tınaztepe (Seydişehir/Konya), were recorded for Rana bedriagae caralitana. Of these, the two southernmost records extend the distribution of these subspecies in the Lake District of Anatolia.
Pulluterina Karachiensis Sp.N. (Cestoda: Anaplocephalidae) From The Wild Pigeon Columba Livia Gmelin, Rafia Rehana Ghazi, Nasira Khatoon, Sofia Mansoor, Fatima Mujib Bilqees
Pulluterina Karachiensis Sp.N. (Cestoda: Anaplocephalidae) From The Wild Pigeon Columba Livia Gmelin, Rafia Rehana Ghazi, Nasira Khatoon, Sofia Mansoor, Fatima Mujib Bilqees
Turkish Journal of Zoology
A new species, Pulluterina karachiensis, is described from the common pigeon Columba livia Gmelin in Karachi. The new species is characterized by possessing small suckers; a longer neck; fewer testes, smaller in size, and the comparatively smaller size of ova. This is the second species of the genus from Pakistan and third in the literature.
Range Extension Of Caridina Weberi Sumatrensis De Man, 1892 (Decapoda, Caridea, Atyidae) To Sindh Waters (Karachi, Pakistan), Quddusi̇ Bashi̇r Kazmi̇, Feroz Akhtar Siddiqui, Mohammad Afzal Kazmi̇
Range Extension Of Caridina Weberi Sumatrensis De Man, 1892 (Decapoda, Caridea, Atyidae) To Sindh Waters (Karachi, Pakistan), Quddusi̇ Bashi̇r Kazmi̇, Feroz Akhtar Siddiqui, Mohammad Afzal Kazmi̇
Turkish Journal of Zoology
A freshwater atyid Caridina weberi sumatrensis is being reported for the first time from Sindh waters. This report from Karachi is evidently at the margin of its range.
The Ephemeroptera (Insecta) Fauna Of Lake Ulubat Basin, Mustafa Tanatmiş
The Ephemeroptera (Insecta) Fauna Of Lake Ulubat Basin, Mustafa Tanatmiş
Turkish Journal of Zoology
In this study, 1812 Ephemeroptera nymphs were collected in order to determine the Ephemeroptera fauna of Lake Ulubat Basin between April 1996 and September 1999. The distribution of 38 species belonging to 22 genera and 10 families is presented. Among these, the genus Brachycercus Curtis, 1834 and the species Brachycercus harrisella Curtis, 1834 are recorded in Turkey for the first time. In addition, previous records on the distribution of all 38 species in Turkey are given.
The Species Of Tryphoninae (Hymenoptera: Ichneumonidae) In Turkish Thrace, Murat Yurtcan, Ahmet Beyarslan
The Species Of Tryphoninae (Hymenoptera: Ichneumonidae) In Turkish Thrace, Murat Yurtcan, Ahmet Beyarslan
Turkish Journal of Zoology
This study was carried out to investigate the species of the subfamily Tryphoninae (Hymenoptera: Ichneumonidae) in Turkish Thrace between 1992 and 1994. A total of 89 samples were collected from 42 localities and 26 species belonging to 11 genera were determined. Diagnostic keys to the species, subgenera and genera were prepared. In order to distinguish morphological characters that were mentioned in the keys, 31 original figures are given. Of these species, Phytodietus polyzonias (Foerster), Netelia (Prosthodocis) japonicus (Uchida), N. (Bessobates) cristatus (Thomson), N. (Netelia) ocellaris (Thomson), N. (Netelia) rufescens (Tosquinet), Neleges proditor (Gravenhorst), Dyspetes arrogator Heinrich, Ctenochira angulata (Thomson), Exyston …
Degradation Products Of Adenine Nucleotide In Rainbow Trout (Oncorhynchus Mykiss) Stored In Ice And In Modified Atmosphere Packaging, Yeşi̇m Özoğul, Fati̇h Özoğul
Degradation Products Of Adenine Nucleotide In Rainbow Trout (Oncorhynchus Mykiss) Stored In Ice And In Modified Atmosphere Packaging, Yeşi̇m Özoğul, Fati̇h Özoğul
Turkish Journal of Zoology
The breakdown products of adenosine triphosphate (ATP) were separated using a rapid HPLC method. The K-value, Ki-value and H-value were also determined as a means of evaluating the quality of rainbow trout held in ice and modified atmosphere packaging comparing with sensory and microbiological analysis in terms of fresh fish quality. Results from the present research indicated that modified atmosphere did not extend the shelf life of trout but inhibited microbial growth compared to ice storage. However, there was no significant difference (P>0.05) between the two conditions. K and Ki-values provided a useful freshness index of fish for both …
Floral Choices, Parasites And Micro-Organisms In Natural Populations Of Bumblebees (Apidae: Hymenoptera) In Ankara Province, Ahmet Murat Ayteki̇n, Neşe Çağatay, Selçuk Hazir
Floral Choices, Parasites And Micro-Organisms In Natural Populations Of Bumblebees (Apidae: Hymenoptera) In Ankara Province, Ahmet Murat Ayteki̇n, Neşe Çağatay, Selçuk Hazir
Turkish Journal of Zoology
In this study, the flower choices of different bumblebee species in Ankara province regarding their associations among various parasites and micro-organisms were determined. A total of 21 different species of the genera Bombus Latreille and Psithyrus Lepeletier were examined. The motile hypopus of the mite species Acarus farris (Oudemans, 1905) (Acaridae) was found to be phoretic on Bombus (Bombus) terrestris, Megabombus (Megabombus) argillaceus, Megabombus (Thoracobombus) zonatus and Pyrobombus (Sibiricobombus) niveatus queens. Nosema bombi was also determined to be an internal parasite of B. terrestris. Finally, a nematode species belonging to the family Allantonematidae (Tylenchida) was isolated from Megabombus (Thoracobombus) sylvarum …