Yusuf Bozkurt

İskenderun Technical University

Yusuf Bozkurt has a BSc, MSc, and Ph.D. from Ankara University, Türkiye. He is currently Professor of Biotechnology of Reproduction in the field of Aquaculture at İskenderun Technical University, Türkiye. His research interests include reproductive biology and biotechnology with an emphasis on cryo-conservation. He is on the editorial board of several international peer-reviewed journals and has published many papers. Additionally, he has participated in many international and national congresses, seminars, and workshops with oral and poster presentations. He is an active member of many local and international organizations.

5books edited

7chapters authored

Latest work with IntechOpen by Yusuf Bozkurt

Reproduction is the backbone of animal-based food production. The reproductive systems of animals vary and are species-dependent. In this regard, all terrestrial animals perform internal fertilization, whereas aquatic animals perform different reproductive strategies such as internal fertilization without mating, external fertilization, viviparous, oviparous, and parthenogenesis. Today, reproductive biotechnology is an important part of the conservation and propagation of animals. This book addresses several hot topics in the field of reproduction of terrestrial and aquatic animals. Over five sections and eight chapters, this volume examines subjects such as cryopreservation, embryo transfer, avian reproduction, intraovarian gestation, and more.

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Animal Reproduction

Edited by Yusuf Bozkurt

Books edited

By Yusuf Bozkurt, İlker Yavas and Fikret Karaca

Part of the book: Current Frontiers in Cryopreservation

Cryopreservation of Nile Tilapia (Oreochromis niloticus) Sperm

By Yusuf Bozkurt and İlker Yavaş

The main aim of this study is to determine the effect of the straw volume (0.25 vs. 0.5 mL) on Nile tilapia sperm quality after cryopreservation. Sperm was frozen according to conventional slow freezing procedure and diluted at ratio of 1:3 with ionic extender containing 350 mM glucose and 30 mM Tris containing 10% dimethylacetamide. Diluted semen was equilibrated at 4°C for 10 min and drawn into 0.25-mL or 0.5-mL plastic straws and sealed with polyvinyl alcohol. Samples were frozen 3 cm above of the liquid nitrogen surface and exposed to the liquid nitrogen vapor (≈−140°C) for 10 min. After this, frozen sperm cells were kept into the liquid nitrogen container (−196°C). The frozen sperm in different volume of straws were thawed in a water bath at 30°C for 20 s (0.25-mL straws) or at 30°C for 30 s (0.5-mL straws), respectively. Fertilization was conducted using 1 ×105 spermatozoa/egg ratio with each straw type. The findings of the present study indicated that cryopreservation of sperm in glucose-Tris–based extender using 0.5-mL straws improved post-thaw progressive motility, duration of progressive motility, and fertilization results (P<0.01). On the other hand, differences in term of post-thaw cell viability was not significant among the treatments (P>0.01). In conclusion, our results suggest that Nile tilapia sperm can be successfully cryopreserved in Tris-based extenders supplemented with glucose containing 10% dimethylacetamide in 0.5-mL straws.

Part of the book: Cryopreservation in Eukaryotes

Importance of Grass Carp (Ctenopharyngodon idella) for Controlling of Aquatic Vegetation

By Yusuf Bozkurt, İlker Yavas, Aziz Gül, Beytullah Ahmet Balcı and Nurdan Coskun Çetin

Aquatic plants are beneficial and a necessary part of lakes and reservoirs. Also, some kind of plants are the main food source for aquatic animals. Plants are able to stabilize sediments, improve water clarity and add diversity to the shallow areas of lakes. On the other hand, overgrown plants can become a nuisance by hindering human uses of water and threaten the structure and function of diverse native aquatic ecosystems. This chapter aims to make analysis of using of grass carp to control aquatic vegetation. In this concept, origin and distribution, biological features, reproduction, feeding behaviour and effects of grass carp on aquatic plants, water body and sediments are also discussed.

Part of the book: Grasses

Introductory Chapter: Application Fields of Cryopreservation Biotechnology

By Yusuf Bozkurt

Part of the book: Cryopreservation Biotechnology in Biomedical and Biological Sciences

Introductory Chapter: Cryopreservation Biotechnology in Aquatic Science

By Yusuf Bozkurt

Part of the book: Biological Research in Aquatic Science

Introductory Chapter: Importance of Zebrafish (Danio rerio) as Model Organism in Biomedical Research

By Yusuf Bozkurt

Part of the book: Zebrafish in Biomedical Research

Introductory Chapter: Reproductive Strategies and Biotechnologies in Terrestrial and Aquatic Animals

By Yusuf Bozkurt and Mustafa Numan Bucak