İsmail Kudret SAĞLAM, Selim Süalp ÇAĞLAR

Local population size and dynamics of the color polymorphic bush cricket,isophya rizeensis Sevgili,2003 (orthoptera:Tettigoniidae) within the Fırtına Valley

Isophya rizeensis Sevgili, 2003 (Orthoptera: Tettigoniidae) Türkiye'nin kuzey-güneyinde bulunan Fırtına Vadisine endemik ve renk bakımından polimorfik olan bir çayır çekirgesidir. Bu çalışma I. rizeensis'm Fıtına Vadisi içerisindeki 13 istasyondaki yerel populasyon büyüklüklerini ve dinamiklerini ortaya koymaktadır. Yerel populasyon büyüklüğü istasyonlar arasında büyük farklılıklar gösterdiği ve Hopkins'in biyoklimatik kuralı doğrultusunda farklı yüksekliklerde bulunan istasyonlarda nimf çıkışı ve erginleşme bakımından birer haftalık gecikmeler gözlemlenmiştir. Bu çalışından elede edilen sonuçlar doğrultusunda Fırtına Vadisi içerisinde bulunan I. rizeensis populasyonunun bir birinden farklı ekolojik baskılar altında bulunan bir kaç yerel populasyonundan meydana gelen bir metapopulasyon oluşturduğu söylenebilir.

Renk bakımından polimorfik olan çayır çekirgesi isophya rizeensis Sevgili, 2003 (Orthoptera: Tettigoniidae)'nin Fırtına Vadisi içerisindeki yerel populasyon büyüklükleri ve dinamikleri

Isophya nzeensis Sevgili, 2003 (Orthoptera: Tettigoniidae) is a color polymorphic bush cricket endemic to the Fırtına Valley in the northeast of Turkey. This paper describes the local population size and dynamics of the species distributed in 13 different habitat patches within the Fırtına Valley. Local population size varied greatly between sites, and a 1 -week delay in nymph emergence and maturation was recorded at the highest habitat patch relative to all habitat patches located at lower altitudes. The results given in this paper suggest that the I. nzeensis population in the Fırtına Valley constitutes a metapopulation made up of several local populations under partially different ecological pressures.

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