Letter to the Editor regarding "Ovarian fluid plays an essential role in attachment of Eurasian perch, Perca fluviatilis eggs".
نویسنده
چکیده
Eggs of the Eurasian perch, Perca fluviatilis, are strongly attached to each other to form 0.5-5.5m long and 1-6 cm wide floating jelly strands or ribbons. The processes involved in the initiation of egg attachment were investigated in the present study. Eggs are released together with small amounts of ovarian fluid. When the eggs come in contact with water, a fibrous jelly-like structure is formed by interactions between proteins of the ovarian fluid and proteins of the zona radiata externa (ZRE) leading to the egg attachment with each other. This mechanism is unique in teleost fish and is described for the first time in the present paper.
منابع مشابه
Morphological comparison of Eurasian perch (Perca fluviatilis L., 1758) in the Anzali and Chamkhaleh wetlands, Guilan Province
This article has no abstract.
متن کاملSex steroid dynamics during embryogenesis and sexual differentiation in Eurasian perch, Perca fluviatilis.
It is widely accepted that sex steroid hormones play an important and a specific role during the process of sex differentiation in fish. In order to describe the role of the three main sex steroid hormones (testosterone--T, 17beta-estradiol--E2 and 11keto-testosterone--11KT) during embryogenesis and sex differentiation in Eurasian perch, Perca fluviatilis, eggs, larvae and juveniles originating...
متن کاملDomestication drive the changes of immune and digestive system of Eurasian perch (Perca fluviatilis)
Domestication has altered a variety of traits within the Eurasian perch (Perca fluviatilis), including phenotypic, physiological and behavioral traits of Eurasian perch (Perca fluviatilis). Little is known, however, about the genetic changes between domesticated and wild Eurasian perch. In this study, we assembled a high-quality de novo reference transcriptome and identified differentially expr...
متن کاملEvolutionary mechanisms of population divergence in Eurasian perch (Perca fluviatilis L.). 2005
متن کامل
Competition for food between Eurasian perch(Perca fluviatilis L.) and ruffe(Gymnocephaluscernuus [L.]) over different substrate types
Food consumption by Eurasian perch (Perca fluviatilis L.) and ruffe (Gymnocephalus cernuus [L.]) was studied in single and mixedspecies treatments in the laboratory, where alternative food resources, chironomids and zooplankton, were offered simultaneously. The effects of structural complexity, which was represented by substrate grain size, and of feeding level on food consumption were analysed...
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ورودعنوان ژورنال:
- Theriogenology
دوره 71 4 شماره
صفحات -
تاریخ انتشار 2009