Türkiye Tatlısularında Egzotik Yeşil Kılıçkuyruk(Xiphophorus hellerii)’nin İlk ve Lepistes (Poecilia reticulata)’nın İlave Kaydı

Abstract

C anlı doğuran poeciliidler, birkaç istisna dışında en popüler ve en çok ticareti yapılan süs balığı türleri arasında yer almaktadır. Dolayısıyla, bu türler genellikle akvaryum meraklıları tarafından kendi doğal alanlarının dışındaki doğal sulara sıklıkla taşınmaktadır. Bu çalışmada, Türkiye'nin doğusunda (38°34′ 32″K, 37°29′21″D) bir sıcaksu kaynağında iki egzotik poeciliid türü, kılıçkuyruk (Xiphophorus hellerii) ve lepistes (Poecilia reticulata) türlerinin yabani popülasyonları kaydedilmiştir. Bu, Türkiye'deki belgelenmiş ilk kılıçkuyruk kaydı olup, muhtemelen belirtilen iki türün Fırat Havzası'ndaki ilk kayıtlarıdır. Bu iki poeciliid türünün doğal biyota üzerindeki potansiyel etkilerini belirlemek, ayrıca yayılma şanslarını ve yönetim seçeneklerini de ele alabilmek için daha fazla araştırmaya ihtiyaç vardır.

From the pond to the creek many years ago: life-history dynamics of feral poeciliids in Brazil

“…This is probably the lowest size found in introduced populations of feral P. reticulata and X. maculatus. In other sites and environments throughout Brazil and the world, the smallest reproductive size of feral guppy and southern platyfish ranged between 1.2-2.0 cm, and 1.7-2.0 cm SL respectively Andrade et al, 2008;Montag et al, 2011;Kırankaya & Ekmekçi, 2021;Luduvice & Brito, 2023). In the present study, we also found smallest females of P. reticulata and X. maculatus measuring 4.4-5.0 cm TL respectively, indicating a feralization process for both species.…”

“…In the present study, we also found smallest females of P. reticulata and X. maculatus measuring 4.4-5.0 cm TL respectively, indicating a feralization process for both species. Previous studies have documented that ornamental strains of guppy and southern platyfish females living in predation free environments (i.e., aquariums) are usually larger, e.g., 6.0 cm TL (Sterba, 1983), than their feral counterparts, e.g., 4.0-5.1 cm TL in P. reticulata and X. maculatus (Favilli et al, 2018;Kırankaya & Ekmekçi, 2021), likely due to selecting forces such as predation acting upon the body size (Endler, 1982;Reznick & Endler, 1982).…”

Decadal‐scale regional variability in monitoring efforts significantly influences fish diversity trends in the Euphrates and Tigris catchments, Türkiye

“…Thus, non‐native species often outcompete native species for resources (Top Karakuş et al, 2021), but they may also alter local ecosystems, sometimes irreversibly (Bernery et al, 2023). According to recent studies, the number of non‐native species in the Euphrates and Tigris catchments has surpassed 30 established non‐native species (Esmaeili, 2021), continuing to increase with new introductions (Kırankaya & Ekmekçi, 2021). Since the 1950s, reservoirs across Iran have been invaded by the grass carp ( Ctenopharyngodon idella ), one of the large carps native to China (Armantrout, 1980).…”

“…Because primarily native species were targeted by the underlying surveys, the distribution of non‐native species (especially in the Euphrates catchment) remained anecdotally described. For example, C. carpio , Carassius carassius , C. gibelio and Oncorhynchus mykiss were recorded in the Atatürk Reservoir located in the Euphrates River (Bayhan, 2021), Xiphophorus hellerii and Poecilia reticulata are known for the upper Euphrates catchment (Kırankaya & Ekmekçi, 2021), H. fossilis is known to occur in the Tigris catchment (Kaya et al, 2016), and Atherina boyeri was described from the Devegeçidi Reservoir (Ünlü et al, 2017). However, these species did not occur in the collection material analysed, emphasizing the prevailing threat presented by lacking or anecdotal information on community compositions.…”

“…Xiphophorus hellerii and Poecilia reticulata are known for the upper Euphrates catchment (Kırankaya & Ekmekçi, 2021), H. fossilis is known to occur in the Tigris catchment (Kaya et al, 2016), and Atherina boyeri was described from the Devegeçidi Reservoir (Ünlü et al, 2017).…”