Naslov
Kasnomiocenski procvat slatkovodnih srčanki (Bivalvia: Cardiidae) u Panonskom jezeru
(Late Miocene flourishing of freshwater cockles (Bivalvia: Cardiidae) in the Pannonian Lake)

Autori
Jarić, Anja ; Sremac, Jasenka ; Bošnjak, Marija

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts - PhD Student Symposium 2021 / Barišić, Dajana - Zagreb : Prirodoslovno-matematički fakultet Sveučilišta u Zagrebu, 2021, 298-299

ISBN
978-953-6076-90-1

Skup
5. Simpozij studenata doktorskih studija PMF-a = 5th Faculty of Science PhD Student Symposium

Mjesto i datum
Zagreb, Hrvatska, 24.04.2021. - 25.04.2021

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
Panonsko jezero, srčanke, slatkovodni mekušci, Lymnocardiinae
(Pannonian Lake, cockles, freshwater mollusks, Lymnocardiinae)

Sažetak
The Pannonian Lake existed for about 7 million years, from the end of the Middle Miocene to the beginning of the Early Pliocene, and during that geological time it changed significantly geographically and biologically [1]. It was formed by the closure of the Paratethys Sea and its gradual change in salinity, as a result of which many stenohaline organisms became extinct, and euryhaline organisms, including cockles, began to develop rapidly and their number and species diversity increased [2]. Most lake mollusks experience their maximum during the Late Miocene. Croatian Natural History Museum stores a rich collection of Miocene and Pliocene freshwater mollusks, including over 2000 specimens of freshwater cockles, mostly members of the Lymnocardiinae subfamily. About 100 species have been determined, and the first results indicate that the largest number originates from the youngest Miocene Rhomboidea deposits [3, 4]. Species that stand out with the number of specimens are Lymnocardium mayeri (245), L. riegeli (202), L. rogenhoferi (110), L. diprosopum (94) and Pseudocatillus simplex (136). Due to the fragmentation and shell deficiencies, 97 specimens were determined at the genus level. The main findings of these fossil shells are located around the hills in Northern Croatia, which during the Late Miocene represented the islands in the lake. They inhabited a part of the neritic zone, which indicates the coastline relief that can be traced along the sites and which has changed over time. A big difference in the number of freshwater cockles through different stages of the existence of the Pannonian Lake in the wider area can be correlated with the salinity changes and their ability to adapt to new environments [5].

Izvorni jezik
Engleski

Znanstvena područja
Geologija

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