Minos G.,Alexander Technological Educational Institute of Thessaloniki |
Karidas T.,Alexander Technological Educational Institute of Thessaloniki |
Economidis P.S.,Karakasi 79
Acta Adriatica | Year: 2015
On September 20th 2011, a rather large specimen of 134 cm total length (mature, female), weighing 6974 g, of the rare crested oarfish Lophotus lacepede Giorna 1809, was obtained from a fisherman fishing off Halkidiki Peninsula, north Aegean Sea (Greece). This capture represents the northernmost record in the Aegean Sea for one of the scarcest species in Eastern Mediterranean. © 2015, Institute of Oceanography and Fisheries. All rights reserved.
Koutrakis E.T.,Hellenic Agricultural Organization Fisheries Research Institute |
Sapounidis A.,Hellenic Agricultural Organization Fisheries Research Institute |
Apostolou A.,Bulgarian Academy of Science |
Vassilev M.,Bulgarian Academy of Science |
And 5 more authors.
Journal of Biological Research (Greece) | Year: 2013
Nestos/Mesta river is a typical transboundary river located in the Eastern Balkans, flowing through Bulgaria and Greece. During the last decades, various efforts have been undertaken on promoting the awareness for integrated management and protection within the framework of international le gislation and thus directly contributing to the evaluation of river's ecosystem status through fish bio-indicators. This study presents an integrated and update list of Nestos/Mesta fish fauna throughout the whole river course and its tributaries. A total number of 25 freshwater fish species were recorded. Thirteen species were characterized as native or endemic for the broader river basin. Furthermore, seven species were characterized as translocated and another five as exotic. These latter species found a favorable environment in the two dam lakes, created for hydropower pro duction, consisting the 28.66% of the total catches. On the contrary, along Nestos/Mesta river course, the autochthonous species dominate.
Minos G.,ATEI |
Kokokiris L.,ATEI |
Economidis P.S.,Karakasi 79
Journal of Applied Ichthyology | Year: 2010
The objective of the study was to identify the potential of Liza haematocheilus to establish self-sustaining populations along the coast of the North Aegean Sea (Greece). The sexual maturity was described histologically from 32 specimens (43-74.4 cm, TL) aged from 3 to 8 years old which were caught between 2003 and 2009 from fishery by-catches. Testicular and ovarian development was synchronous. Males were either maturing (spermatogenesis stage, September to March), mature (spermiating, April to July) or post-mature (recovery stage). Females were in previtellogenesis or maturing (early vitellogenesis, October to January) or mature (late vitellogenesis, July). Mature males (spermatids mean size: 1.5 ± 0.05 μm) were captured from April to July and mature females (late vitellogenic oocytes mean diameter: 499.4 μm) during July, indicating that spermiation and spawning in North Aegean Sea take place from April to July. Contrary to the other grey mullets which overwinter in the sea, the redlip mullet tolerates low water temperatures and migrates to freshwater where competition with other mullets is lacking. The issues of establishing population and evidence for its spawning success still remain open. © 2010 Blackwell Verlag, Berlin.