Cyclomorphism or seasonal polymorphism was first described in
zooplankton by Lauterborn at 1904. This term is nowadays referred to as the seasonal
changes in body structures affected by the abiotic (temperature, turbulence,
light) and biotic (nutrient, predator, pressure) circulation in small aquatic
organisms. These seasonal changes may cause the season to look like two
different forms. Cyclomorphosis more prevalent, especially among planktonic
cladocerans, but also among protozoa, dinoflagellates and rotifers. Cyclomorphosis
is a consequence of changes in the physical appearance and behavior of
organisms. Cyclomorphism is reduce the sinking rate of the organism in aquatic
environment and facilitates swimming, at the same time, another advantage is
the defense against feeding with planktons predators. Researchers have shown
that chemicals released by some hunter species (kairomons) cause body spurs
such as caudal spin, hump, and defense against the predator. This review also
details cyclomorphosis and changes in the plankton.
Siklomorfizm
veya mevsimsel polimorfizm zooplanktonlarda ilk olarak Lauterborn tarafından
1904 yılında tanımlanmıştır. Bu terim günümüzde küçük akuatik organizmalarda
abiyotik (sıcaklık, türbülans, ışık) ve biyotik (besin, predatör baskısı)
çevrenin etkisiyle vücut yapılarında mevsimsel olarak meydana gelen fiziksel
değişiklikler olarak adlandırılmaktadır. Bu mevsimsel değişiklikler türün
mevsimsel olarak iki farklı form gibi görünmesine neden olabilmektedir.
Siklomorfosiz özellikle planktonik kladoseralar arasında daha fazla
gözlemlenirken, ayrıca protozoa, dinoflagellat ve rotiferler arasında da yaygın
olarak görülmektedir. Siklomorfosiz sonucu canlıların fiziksel görünüşlerinde
ve davranışlarında birtakım değişiklikler söz konusudur. Siklomorfosiz akuatik
ortamda organizmanın batma oranını azaltıp yüzmede kolaylık sağlarken, aynı
zamanda planktonla beslenen predatörlere karşı da bir savunma mekanizması
olarak kullanılmaktadır. Araştırmacılar tarafından bazı avcı türlerin
salgıladığı kimyasalların (kairomonlar) canlıda kaudal spin, tepelik gibi vücut
çıkıntılarına neden olduğu ortaya konmuştur. Bu derleme de planktonlardaki
siklomorfosiz olayı ve meydana gelen değişikliklerden detaylı olarak
bahsedilmiştir.
Primary Language | Turkish |
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Subjects | Structural Biology |
Journal Section | Research Articles |
Authors | |
Publication Date | October 11, 2018 |
Submission Date | June 25, 2018 |
Published in Issue | Year 2018 Volume: 44 Issue: 2 |
Journal Owner: On behalf of Selçuk University Faculty of Science, Rector Prof. Dr. Hüseyin YILMAZ
Selcuk University Journal of Science Faculty accepts articles in Turkish and English with original results in basic sciences and other applied sciences. The journal may also include compilations containing current innovations.
It was first published in 1981 as "S.Ü. Fen-Edebiyat Fakültesi Dergisi" and was published under this name until 1984 (Number 1-4).
In 1984, its name was changed to "S.Ü. Fen-Edeb. Fak. Fen Dergisi" and it was published under this name as of the 5th issue.
When the Faculty of Letters and Sciences was separated into the Faculty of Science and the Faculty of Letters with the decision of the Council of Ministers numbered 2008/4344 published in the Official Gazette dated 3 December 2008 and numbered 27073, it has been published as "Selcuk University Journal of Science Faculty" since 2009.
It has been scanned in DergiPark since 2016.
Selcuk University Journal of Science Faculty is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) License.