Trichoptera Larvalarının Araç Çayı’nda (Kastamonu, Karabük, Türkiye) Mevsimsel ve Mekânsal Dağılımı

Çalışmanın amacı: Farklı böcek türlerinin larvaları, çeşitli kirlilik seviyelerinde su kalitesini değerlendirmek için kullanılır. Bu çalışmada, Araç Çayı’nın Trichoptera larvası tür kompozisyonunu ve mevsimsel dağılımlarını tespit etmek ve bazı fiziko-kimyasal parametrelerle ilişkisini belirlemek amaçlanmıştır. Çalışma alanı: Araç Çayı'nın trichopteran türlerini ve trichopteran türleri ile su kalitesi arasındaki ilişkiyi belirlemek için Nisan ve Ekim 2013 arasında Bentik makro omurgasızlar mevsimsel olarak toplanmıştır. Materyal ve yöntem: Örnekler, standart bir dip kepçesi (500 µm) kullanılarak toplanmıştır. Trichoptera taksonları Leica APO S8 binoküler stereomikroskop kullanılarak teşhis edilmiştir. Çevresel değişkenler taşınabilir cihazlar kullanılarak sahada ölçülmüştür. Laboratuarda toplam sertlik standart analitik yöntemlere göre ölçülmüştür. Temel sonuçlar: Araç çayında Trichoptera takımına ait 15 takson tespit edilmiştir. En fazla bireye 311 bireyle 2. istasyonda rastlanırken, en az bireye 87 bireyle 6. istasyonda rastlanılmıştır. Hydropsyche botosaneanui türü Araç çayında en fazla bulunan türdür. Araştırma vurguları: Araç çayında, trichoptera takımına ait toplam 1223 larva toplanmıştır. 8 farklı familyanın (Brachycentridae, Hydropsychidae, Hydroptilidae, Lepidostomatidae, Leptoceridae, Limnephilidae, Psychomyiidae and Rhyacophilidae) 9 cinsine ait 15 takson teşhis edilmiştir. Çalışmada en fazla bireye ilkbahar mevsiminde rastlanılmıştır.

Anahtar Kelimeler:

Trichoptera Larva, Araç Çayı, Kastamonu, Turkey

The Seasonal and Spatial Distribution of Trichoptera Larvae in the Araç Creek (Kastamonu, Karabük, Turkey)

Aim of study: The larvae of different insect species are used to assess water quality at various pollution levels. The aim of this study was to determine the species composition and seasonal distribution of Trichoptera larvae of the Araç Creek and relation with physicochemical parameters. Area of study: Benthic macroinvertebrates were collected between April and October 2013 seasonally to determine the trichopteran species of the Araç Creek. Material and method: The samples were collected using a standard dip net (500µm). The trichopteran taxa were identified using Leica APO S8 binocular stereomicroscope. Environmental variables were measured in the field using portable instruments while total hardness was measured according to the standard analytical methods. Main results: Fifteen trichopteran taxa were identified from the Araç Creek. Three of them could be identified at the genus level. The maximum number of trichopteran larvae were collected at station 2 (311 individuals) while the fewest trichopteran were collected at station 6 (87 individuals). Hydropsyche botosaneanui was found to be the dominant species in Araç Creek. Research highlights: A total of 1223 larvae belonging to Trichoptera were collected from the Araç Creek. 15 taxa belonging to 9 genera of 8 different families (Brachycentridae, Hydropsychidae, Hydroptilidae, Lepidostomatidae, Leptoceridae, Limnephilidae, Psychomyiidae and Rhyacophilidae) were identified. The highest number of individuals was found in the spring season.

Keywords:

Trichopteran Larvae, Araç Creek, Kastamonu, Turkey,

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