A Reassessment of the Conservation Status of Endangered Aphanius sureyanus (Neu, 1937) (Cyprinodontiformes:Aphaniidae) and the First Data on its Reproduction in Captivity

Abstract

A phanius sureyanus (Burdur Dişlisazancığı) Türkiye'nin güneydoğusunda yer alan Burdur Gölü'ne endemiktir. Bu çalışmada, eldeki veriler ve son gözlemlere dayanarak türün güncel koruma durumu kısaca değerlendirilip sunulmuştur. Aphanius sureyanus IUCN tarafından yayınlanan Tehlike Altındaki Türlerin Kırmızı Listesi'nde "Tehlike Altında" (EN) kategorisinde değerlendirilmektedir. Tür üzerindeki başlıca tehditlerin Burdur Gölü'nün kuruması ve tuzluluğun ve kirliliğin artması olduğu öne sürülmektedir. Elde edilen bulgular da, geri dönüşü olmayan bir habitat kaybı ve popülasyon düşüşüne doğru süren bir eğilime işaret etmektedir. Dolayısıyla, türün yeniden değerlendirilip Kritik Düzeyde Tehlike Altında (CR) kategorisine alınması önerilmektedir. Türün esaret altındaki bazı üreme parametreleri de ilk defa gösterilmiştir. Dişiler günde dört ile altı adet arası yapışkan yumurtayı yosun şeklindeki yün yumaklara bırakmaktadır. Bırakılan yumurtaların çapı 1.25 ile 1.50 mm aralığında olup ortalama ±ss 1.37 ±0.09 mm olarak belirlenmiştir.

Increased Water Abstraction and Climate Change Have Substantial Effect on Morphometry, Salinity, and Biotic Communities in Lakes: Examples from the Semi-Arid Burdur Basin (Turkey)

“…We collected information on fish species and their distribution and population status in the BCB from a wide range of literature [47][48][49][50][51][52][53][54][55][56]. The validity of the fish names was checked using FishBase [57] and the Catalog of Fishes [58].…”

“…The Anatolia region is a hotspot for the diversity of the killifish family (Aphaniidae), a euryhaline group that tolerates changes in salinity and can live in both fresh and brackish waters [65,66]. Many species of the Anatolichthys genus have a limited distribution in the BCB, with some species restricted to only a few springs or lakes, such as Anatolichthys transgrediens, which is only found in Lake Acıgöl during the spring [48], Anatolichthys saldae, which is only found in Lake Salda, and Anatolichthys sureyanus, which only occurs in Lake Burdur [51]. The endangered A. sureyanus has been highlighted as being under threat due to massive water abstraction and damming [48,63].…”

“…The springs of Lake Acıgöl are also an important migration and wintering site for the endemic and threatened Acıgöl toothcarp Anatolichthys transgrediens [47,51]. During heavy rainfalls, when the salinity concentration is low, A. transgrediens can be found near the shores, especially in the southern part of the lake [47,66].…”

“…During heavy rainfalls, when the salinity concentration is low, A. transgrediens can be found near the shores, especially in the southern part of the lake [47,66]. A. transgrediens populations have declined dramatically, and the species is currently listed as Critically Endangered [51,63]. The loss of habitat around the lake, as a result of reduced rainfall, water abstraction, and drying springs, has negatively impacted the species [75].…”

The influence of environmental instability on the reproductive strategy of the critically endangered Acıgöl killifish (Aphanius transgrediens)

“…In Anatolia, where the genus is remarkably diverse, there are 18 endemic species, 8 of which are represented by small isolated populations that are known from a single lake or spring and the remaining species are known from a single (or rarely two) watershed area (Freyhof et al, 2017; Yo gurtçuo glu and Freyhof, 2018). Although only four of the Anatolian species are listed as threatened, it has been suggested that most of the species among those not yet assessed are endangered as a result of their highly localised occurrence and ongoing threats in their habitats (Yo gurtçuo glu, 2018).…”