Eurasian Journal of Zoology

Detection of Coccidiosis in Sheep in Nizip district (Gaziantep)

2025-02-11T17:35:23+03:00

In this study, the causative agents of coccidiosis in sheep from the Nizip district were identified. Nine Eimeria species (E. parva, E. ovinoidalis, E. ahsata, E. ovina, E. crandallis, E. pallida, E. granulosa, E. faurei, E. intricata) were detected from 350 sheep. The most common species was E. parva, while the least common was E. intricata. No pure infections were detected in the 350 sheep with parasitic diseases. It was found that all examined sheep had mixed infections involving two or more species, with a maximum of eight species observed together.

A Study on Ornithofauna of Göründü Marshes (Van/Türkiye)

2025-05-09T12:25:03+03:00

This research was carried out in Göründü Marshes within the borders of Van province between March 2023 and March 2024. As a result of the field studies, 71 bird species belonging to 15 orders and 28 families were identified in research area and its surroundings. Of these species, 27 species were resident (% 38), 34 were summer visitors (% 48), 6 were winter visitor (% 8.4 ) and 4 (% 5.6) were transit migrants. The most dominant orders in the area were Passeriformes, Gruiformes Charadriiformes and Anseriformes while the dominance of Ciconiiformes, Falconiformes, Strigiformes and Bucerotiformes orders to be less.

The most frequently observed species in the marshes; Eurasian coot (Fulica atra), common pochard (Aythya ferina), little grebe (Tachybaptus ruficollis), great crested grebe (Podiceps cristatus), mallard (Anas platyrhynchos), ruddy shelduck (Tadorna ferruginea), Western marsh-harrier (Circus aeruginosus) and black headed gull (Larus ridibundus).

When the bird species recorded in Göründü Marshes were examined in terms of their danger status according to the IUCN (International Union for Conservation of Nature) criteria, it was seen that 1 species was in the VU "Vulnerable = Sensitive" category (Aythya ferina-common pochard) and 2 species were in the NT "Near Threatened" category (Vanellus vanellus-Northern lapwing and Limosa limosa-black tailed godwit). According to the Bern Convention, 44 of the bird species are listed in Annex II

Overview of Thelytokous Parthenogenesis in Two Insect Orders: Diptera and Hymenoptera

2025-04-17T13:34:47+03:00

Thelytoky is a type of parthenogenesis when unfertilized eggs only produce female offsprings. Consequently, it prevents the need for females to find a mate for reproduction through automixis or apomixis and allows them to successfully pass on their genetic material to their progeny, increasing the number of females. This phenomenon can occur through the genetic mechanisms of certain species or can be induced by infections from maternally transmitted endosymbiotic bacteria such as Wolbachia, Rickettsia, and Cardinium. Different Dipteran and Hymenopteran species reproduce via thelytokous parthenogenesis, but there is still limited information about this process. In this review, we provided a broad summary of the phenomenon of thelytokous parthenogenesis by referencing studies focusing on Dipteran and Hymenopteran species.

A New Generation Approach to Fighting Mosquitoes: Efficacy and Safety of Hybrid Insecticide Formulation with Synthetic and Natural Components

2025-06-14T11:51:11+03:00

Mosquitoes are among the major vector organisms that threaten human health and play an important role in the spread of many infectious diseases such as malaria, dengue, Zika and chikungunya. The widespread and long-term use of conventional insecticides has harmful effects on both the environment and non-target organisms, and also accelerates the development of resistance in vector populations. This study introduces a hybrid insecticide formulation containing synthetic (deltamethrin, pyriproxyfen, PBO) and natural (azadirachtin, thymol, eugenol, mushroom extract) components, designed to be highly effective against adult and larval mosquito forms. This formulation, which uses microcapsule and suspension concentrate technologies together, offers a synergistic structure in suppressing the vector population with multiple mechanisms of action at neurotoxic, hormonal and behavioral levels. In addition, the environmentally friendly properties of the components, low toxicity profile and biodegradability levels increase the safety of the formulation in terms of human health and the ecosystem. The study evaluates the applicability of this hybrid structure in integrated vector control programs and indicates that it can be further developed with nanotechnological carrier systems in the future.

Insect Microbiomes: Ecological Interactions and Symbiotic Relationships

2025-06-14T11:48:52+03:00

Insects, constituting approximately 66% of all known animal species, are pivotal components of terrestrial ecosystems, playing dual roles as both beneficial organisms and significant agricultural pests. The escalating global crop losses attributed to insect pests, now exceeding 20% in some regions, underscore the urgent need for innovative pest management strategies. Recent research highlights the profound influence of the insect microbiome—the complex community of microorganisms associated with insect hosts—on insect biology and ecology. This review provides a comprehensive overview of the diversity and functional roles of insect microbiomes, focusing particularly on gut-associated bacteria and fungi. We explore how these microbial consortia contribute to crucial host functions, including nutrient acquisition, immune modulation, detoxification of xenobiotics, and reproductive success. Furthermore, the review delves into the ecological and evolutionary implications of insect-microbe interactions, such as their roles in adaptation to climate change, mechanisms of speciation, and host choice. Finally, we discuss the burgeoning applications of microbiome research in sustainable pest management, including novel biological and biotechnological control methods like paratransgenesis. The advancements in multi-omic analysis techniques are also examined, emphasizing their importance in unraveling the intricate mechanistic basis of host-microbiome interactions. This synthesis aims to highlight the central importance of insect microbiomes and pave the way for more targeted and environmentally friendly solutions in entomology and applied zoology.