Halil Şen - Academia.edu (original) (raw)
Papers by Halil Şen
Israeli Journal of Aquaculture - Bamidgeh, 2004
As from January 2010 The Israeli Journal of Aquaculture-Bamidgeh (IJA) will be published exclusiv... more As from January 2010 The Israeli Journal of Aquaculture-Bamidgeh (IJA) will be published exclusively as an on-line Open Access (OA) quarterly accessible by all AquacultureHub (http://www.aquaculturehub.org) members and registered individuals and institutions. Please visit our website (http://siamb.org.il) for free registration form, further information and instructions. This transformation from a subscription printed version to an on-line OA journal, aims at supporting the concept that scientific peer-reviewed publications should be made available to all, including those with limited resources. The OA IJA does not enforce author or subscription fees and will endeavor to obtain alternative sources of income to support this policy for as long as possible.
Ege Journal of Fisheries and Aquatic Sciences, 2004
Bu çalışmada, farklı sıcaklıklarda inkübe edilen kalamar (Loligo vulgaris Lamarck, 1798) yumurtal... more Bu çalışmada, farklı sıcaklıklarda inkübe edilen kalamar (Loligo vulgaris Lamarck, 1798) yumurtalarının embriyonik gelişim süresi ve açılım başarısı incelenmiştir. Bu amaçla, 4°C aralıklarla 10-22°C arasında, toplam 8 deneme grubu kurulmuştur. Denemelerde, balıkçılardan temin edilen, safha 13 (IV)'teki kalamar yumurtaları kullanılmıştır. Yumurtaların en fazla ve en az yumurta açılım başarısı ve embriyonik gelişim süresi, Y denemesinde sırasıyla, %86.9-73.5 ve 43-23 gün, K denemesinde ise sırasıyla, %88.5-79.7 ve 39-20 gün olarak hesaplanmıştır.In this study, embryonic development time and hatching success of squid (Loligo vulgaris Lamarck, 1798) eggs, which were incubated at different temperatures, was investigated. in this purpose, total 8 experimental groups were performed at each 4 degrees of temperatures between 10°C and 22°C. the egg capsules in stage 13 (IV) which were obtained from fishermen were used in the experiments. the maximum and minimum hatching success and duration of embryonic development of the eggs were estimated as 86.9-73.5% and 43-23 days, respectively in experiment Y, and as 88.5-79.7% and 39-20 days, respectively in experiment K
Ege Journal of Fisheries and Aquatic Sciences, 2006
Turkish Journal of Fisheries and Aquatic Sciences, 2005
Loligo vulgaris Lamarck, 1798 spawns monocyclic and egg-laying occurs in separate batches during ... more Loligo vulgaris Lamarck, 1798 spawns monocyclic and egg-laying occurs in separate batches during the spawning period (Rocha et al., 2001). Egg capsules of L. vulgaris are laid on the underside of rocky overhangs, on branched sessile organisms (Boletzky, 1998) or on fishing lines (Villenueva, 2000; Villanueva et al., 2003; see also “Materials and methods” of present study) and hang down in the water. The egg masses comprise dozens to hundreds of finger-like egg capsules, 60-160 mm in length, and each capsule containing 50-130 eggs of 1.92-2.88 mm in diameter (Mangold-Wirz, 1963; Worms, 1983; Marthy and Aroles, 1987; Martins, 2001; en, 2003, 2004). Temperature is the main factor that regulates the length of embryonic development in cephalopods (Boletzky, 1987). Embryogenesis of L. vulgaris depends on the experimental water temperature, ranging from a few weeks to a few months (Naef, 1928; Jecklin, 1934; Mangold-Wirz, 1963; Boletzky, 1974; 1987; en, 2003; 2004). Villanueva et al. (2003...
Bu on calismada, bireysel stoklama teknigi kullanilarak ahtapot (Octopus vulgaris)’larin adaptasy... more Bu on calismada, bireysel stoklama teknigi kullanilarak ahtapot (Octopus vulgaris)’larin adaptasyonu amaclanmistir. Bunun icin dogadan yakalanan 10 ahtapot bireyi, tek tek 10 lt lik seffaf, delikli plastik kaplara konulmustur. Ahtapotlarin %80 yasama orani ile adaptasyon sureleri 5 gun surmustur
Ege Journal of Fisheries and Aquatic Sciences, 2006
Ege Journal of Fisheries and Aquatic Sciences, 2019
The effects of individual rearing technique on the growth and survival of Octopus vulgaris (Cuvie... more The effects of individual rearing technique on the growth and survival of Octopus vulgaris (Cuvier, 1797) were investigated. Therefore, wild octopuses were reared in the transparent, perforated and caped polyethylene terephthalate (PET) pots (10 l). The assay was established as one free group rearing as a control (12.7 kg/m3 of stoking density) and two individual rearing groups as I1 and I2 (13.8 kg/m3 and 18.3 kg/m3 of stoking density, respectively). The individuals were fed mainly fresh or thawed fish at 5% body weight per day. The experiments lasted for 120 days. The acclimatization period of the octopuses lasted within 3-5 days in the individual rearing and 7-10 days in the free group rearing. The final survival rates were 100% for the control and I1 or 85.7% for I2 (P>0.05). Statistically, differences were not found among the growth or specific growth rates (between 0.5 and 0.6%/day for the trials) (P>0.05). The maximum density (30.7 kg/m3) was obtained from the I2 trial.
Turkish Journal of Agriculture - Food Science and Technology, 2019
A total of 48 randomly selected fish farms from the coasts of Izmir and Muğla, Aegean Sea were vi... more A total of 48 randomly selected fish farms from the coasts of Izmir and Muğla, Aegean Sea were visited face-to-face interviewing with fish farmers and a total of 329 coastal fishermen, catches around the sea-cage fish farms between July 2015 and July 2017. We asked them the reasons for fish escapes from sea-cage fish farms. Answers were concerning with the predator attacks, storms, biting of cage-nets by reared fish and seabirds, slits of the nets, drop during transfer, etc.
Acta Ichthyologica et Piscatoria, 2019
Background. Fish farms attract both juvenile and adult wild fishes in great numbers and diversity... more Background. Fish farms attract both juvenile and adult wild fishes in great numbers and diversity. These wild fishes also become an easy target stock for local fishers, both professional and recreational. There are three groups of interest in this study, the fish farmers, small-scale fishermen (professional), and recreational fishers (mostly anglers but also spear fishers). This study was intended to determine conflicts derived from the adverse social and bioecological interactions from the perspective of both local fishermen and fish farmers and to determine the observed incidence of predators. Material and methods. In this study, 48 randomly selected fish farms, 28 fishery cooperatives, and 33 fishing ports located close to aquaculture areas were visited for face-to-face interviews with the fishermen of small-scale fisheries (SSF) between July 2015 and July 2017. The main purpose of the survey questionnaire was to ask SSF fishermen for their opinion about offshore aquaculture and vice versa-ask the fish farmers about SSF, emphasizing issues potentially creating problems. Data were collected mainly on sociodemographic profiles, current problems, reciprocal conflict issues, the impact of offshore fish farming on SSF activities, and on bioecological interactions such as predator attacks and problems with farm fish escapes. Results. Approximately 77% of fishermen in Izmir and 71% of fishermen in Muğla declared that they had problems with the sea-cage fish farms. On the other hand, 40% of fish farmers in Izmir and 54% of fish farmers in Muğla reported problems with local SSF. The fishermen believe that in recent years, Mediterranean monk seal (Monachus monachus), sea turtle (Caretta caretta), and invasive fish (pufferfish, etc.) populations have been increasing in Muğla. Additionally, 46% of Muğla fish farmers and 60% of Izmir fish farmers acknowledged cases of fishes escaping from sea-cages. In terms of the predators, 84% of Muğla and 75% of Izmir's fishermen expressed their concerns regarding predator attacks on the sea-cage farms. Conclusion. Further studies, based on socioeconomic issues, are needed for better understanding the dimensions of incomes and economic losses of SSF and cooperation issues in the area where the interaction is high. We suggest that all stakeholders, small-scale fishermen, in particular, must be integrated with a management plan, and the cooperation among both fishing groups should be encouraged.
Vol:36 Issue:3, 2019
Structures, floating on the surface of the ocean attract both juvenile and adult fishes in great ... more Structures, floating on the surface of the ocean attract both juvenile and adult fishes in great numbers and diversity. Natural and artificial Fish Aggregation Devices (FADs) in open seas are widely recognised for their capacity to attract pelagic fishes. It can be assumed that floating sea-cages act as a kind of FAD. Even, fish aggregations beneath the sea-cages increase much more by the influence of feeding. In this study, aggregations of wild fish were counted around six sea-cage fish farms in both northern and southern Aegean Sea. Each fish farm cultivated Sparus aurata and Dicentrarchus labrax and the farms deployed between 720 m and 3 km far from the coast. Between July 2015 and July 2017, assemblages of wild fish were counted bimonthly on two separate days at each of these farms. The Rapid Visual Counts (RVC) in five minutes with SCUBA and covering 11250 m3 were performed for six times within each farm. A total of 40 species, belonging to 22 families were recorded at fish far...
A female individual of Ommastrephes bartrami, which belongs to the Ommastrephidae family, was cau... more A female individual of Ommastrephes bartrami, which belongs to the Ommastrephidae family, was caught from the shallow waters of zmir Bay (Aegean Sea). It set a new record for both zmir Bay and northern Aegean Sea of Turkey. Its morphological features were reexamined and its photograph was taken.
Effects of temperature on development and incubation of squid (Loligo vulgaris Lamarck, 1798) egg... more Effects of temperature on development and incubation of squid (Loligo vulgaris Lamarck, 1798) eggs. In this study, embryonic development time and hatching success of squid (Loligo vulgaris Lamarck, 1798) eggs, which were incubated at different temperatures, was investigated. In this purpose, total 8 experimental groups were performed at each 4 degrees of temperatures between 10°C and 22°C. The egg capsules in stage 13 (IV) which were obtained from fishermen were used in the experiments. The maximum and minimum hatching success and duration of embryonic development of the eggs were estimated as 86.9-73.5% and 43-23 days, respectively in experiment Y, and as 88.5-79.7% and 39-20 days, respectively in experiment K.
Ege Journal of Fisheries and Aquatic Sciences, 2013
In this preliminary study, it was aimed adaptation of common octopus (Octopus vulgaris) by indivi... more In this preliminary study, it was aimed adaptation of common octopus (Octopus vulgaris) by individually stocking technique. Therefore, totally 10 individuals captured from the sea, were placed in a 10 L of plastic transparent perforated bowls by individually. Adaptation periods of the species lasted 5 days with 80% of the survival rate.
Turkish Journal of Veterinary and Animal Sciences
On 2 June 2010, an abnormally pigmented specimen of Solea solea L. with a total length of 222 mm ... more On 2 June 2010, an abnormally pigmented specimen of Solea solea L. with a total length of 222 mm was obtained near Tuzla, from the Izmir Bay of the Aegean Sea. This is the first record of abnormal pigmentation in the wild common sole from the Aegean Sea. The specimen fish is patterned with both hypermelanosis on the blind side and hypomelanosis on the ocular side. This kind of malpigmentation in any flatfish is not typical.
Ege Journal of Fisheries and Aquatic Sciences, 2013
Maja crispata (Risso 1827)’nın larval gelişimi ve yaşama oranı üzerine yem:larva oranının etkiler... more Maja crispata (Risso 1827)’nın larval gelişimi ve yaşama oranı üzerine yem:larva oranının etkileri incelenmiştir. Denemeler 21,6 ± 0,5°C su sıcaklığında yapılmıştır ve larvalar beş yem:larva oranı [5 Artemia/larva (A1), 10 Artemia/larva (A2), 15 Artemia/larva (A3), 20 Artemia/larva (A4) ve 25 Artemia/larva (A5)] ile beslenmişlerdir. Tüm gruplarda, zoe I safhası 3 gün, zoe II safhası 5 gün sürmüştür. Megalop evresi tüm gruplarda 6 günde tamamlanmıştır ve larvaların juvenil evresine geçişleri A1 ve A2 gruplarında 13-14 günde; A3, A4 ve A5 gruplarında ise 12-14 günde tamamlanmıştır. Bu çalışma yem:larva oranının M. crispata larvalarının yaşama oranlarını olumsuz etkilediğini (P<0.05), ancak gelişim sürecini etkilemediğini göstermiştir.Effects of prey:larva ratio on larval development and survival rate of Maja crispata (Risso 1827) were investigated. The experiments were performed at 21.6±0.5°C, and the larvae were fed with five prey:larva ratios [5 Artemia/larva (A1), 10 Artemia/larva (A2), 15 Artemia/larva (A3), 20 Artemia/larva (A4) and 25 Artemia/larva (A5)]., The stage zoea I lasted within 3 days and zoea II stage occurred in 5 days in the all experimental groups. Furthermore, the megalopa stage took place at the same duration (6 days) for all groups. Although, the larvae reached to the juvenile stage in 13-14 days at A1 and A2 groups, within 12-14 days at A3, A4 and A5 groups. This experiment presented that prey:larva ratio affected to the larval survival rates in M. crispate (P<0.05), but did not affect the developmental duration
Israeli Journal of Aquaculture - Bamidgeh, 2004
As from January 2010 The Israeli Journal of Aquaculture-Bamidgeh (IJA) will be published exclusiv... more As from January 2010 The Israeli Journal of Aquaculture-Bamidgeh (IJA) will be published exclusively as an on-line Open Access (OA) quarterly accessible by all AquacultureHub (http://www.aquaculturehub.org) members and registered individuals and institutions. Please visit our website (http://siamb.org.il) for free registration form, further information and instructions. This transformation from a subscription printed version to an on-line OA journal, aims at supporting the concept that scientific peer-reviewed publications should be made available to all, including those with limited resources. The OA IJA does not enforce author or subscription fees and will endeavor to obtain alternative sources of income to support this policy for as long as possible.
Ege Journal of Fisheries and Aquatic Sciences, 2004
Bu çalışmada, farklı sıcaklıklarda inkübe edilen kalamar (Loligo vulgaris Lamarck, 1798) yumurtal... more Bu çalışmada, farklı sıcaklıklarda inkübe edilen kalamar (Loligo vulgaris Lamarck, 1798) yumurtalarının embriyonik gelişim süresi ve açılım başarısı incelenmiştir. Bu amaçla, 4°C aralıklarla 10-22°C arasında, toplam 8 deneme grubu kurulmuştur. Denemelerde, balıkçılardan temin edilen, safha 13 (IV)'teki kalamar yumurtaları kullanılmıştır. Yumurtaların en fazla ve en az yumurta açılım başarısı ve embriyonik gelişim süresi, Y denemesinde sırasıyla, %86.9-73.5 ve 43-23 gün, K denemesinde ise sırasıyla, %88.5-79.7 ve 39-20 gün olarak hesaplanmıştır.In this study, embryonic development time and hatching success of squid (Loligo vulgaris Lamarck, 1798) eggs, which were incubated at different temperatures, was investigated. in this purpose, total 8 experimental groups were performed at each 4 degrees of temperatures between 10°C and 22°C. the egg capsules in stage 13 (IV) which were obtained from fishermen were used in the experiments. the maximum and minimum hatching success and duration of embryonic development of the eggs were estimated as 86.9-73.5% and 43-23 days, respectively in experiment Y, and as 88.5-79.7% and 39-20 days, respectively in experiment K
Ege Journal of Fisheries and Aquatic Sciences, 2006
Turkish Journal of Fisheries and Aquatic Sciences, 2005
Loligo vulgaris Lamarck, 1798 spawns monocyclic and egg-laying occurs in separate batches during ... more Loligo vulgaris Lamarck, 1798 spawns monocyclic and egg-laying occurs in separate batches during the spawning period (Rocha et al., 2001). Egg capsules of L. vulgaris are laid on the underside of rocky overhangs, on branched sessile organisms (Boletzky, 1998) or on fishing lines (Villenueva, 2000; Villanueva et al., 2003; see also “Materials and methods” of present study) and hang down in the water. The egg masses comprise dozens to hundreds of finger-like egg capsules, 60-160 mm in length, and each capsule containing 50-130 eggs of 1.92-2.88 mm in diameter (Mangold-Wirz, 1963; Worms, 1983; Marthy and Aroles, 1987; Martins, 2001; en, 2003, 2004). Temperature is the main factor that regulates the length of embryonic development in cephalopods (Boletzky, 1987). Embryogenesis of L. vulgaris depends on the experimental water temperature, ranging from a few weeks to a few months (Naef, 1928; Jecklin, 1934; Mangold-Wirz, 1963; Boletzky, 1974; 1987; en, 2003; 2004). Villanueva et al. (2003...
Bu on calismada, bireysel stoklama teknigi kullanilarak ahtapot (Octopus vulgaris)’larin adaptasy... more Bu on calismada, bireysel stoklama teknigi kullanilarak ahtapot (Octopus vulgaris)’larin adaptasyonu amaclanmistir. Bunun icin dogadan yakalanan 10 ahtapot bireyi, tek tek 10 lt lik seffaf, delikli plastik kaplara konulmustur. Ahtapotlarin %80 yasama orani ile adaptasyon sureleri 5 gun surmustur
Ege Journal of Fisheries and Aquatic Sciences, 2006
Ege Journal of Fisheries and Aquatic Sciences, 2019
The effects of individual rearing technique on the growth and survival of Octopus vulgaris (Cuvie... more The effects of individual rearing technique on the growth and survival of Octopus vulgaris (Cuvier, 1797) were investigated. Therefore, wild octopuses were reared in the transparent, perforated and caped polyethylene terephthalate (PET) pots (10 l). The assay was established as one free group rearing as a control (12.7 kg/m3 of stoking density) and two individual rearing groups as I1 and I2 (13.8 kg/m3 and 18.3 kg/m3 of stoking density, respectively). The individuals were fed mainly fresh or thawed fish at 5% body weight per day. The experiments lasted for 120 days. The acclimatization period of the octopuses lasted within 3-5 days in the individual rearing and 7-10 days in the free group rearing. The final survival rates were 100% for the control and I1 or 85.7% for I2 (P>0.05). Statistically, differences were not found among the growth or specific growth rates (between 0.5 and 0.6%/day for the trials) (P>0.05). The maximum density (30.7 kg/m3) was obtained from the I2 trial.
Turkish Journal of Agriculture - Food Science and Technology, 2019
A total of 48 randomly selected fish farms from the coasts of Izmir and Muğla, Aegean Sea were vi... more A total of 48 randomly selected fish farms from the coasts of Izmir and Muğla, Aegean Sea were visited face-to-face interviewing with fish farmers and a total of 329 coastal fishermen, catches around the sea-cage fish farms between July 2015 and July 2017. We asked them the reasons for fish escapes from sea-cage fish farms. Answers were concerning with the predator attacks, storms, biting of cage-nets by reared fish and seabirds, slits of the nets, drop during transfer, etc.
Acta Ichthyologica et Piscatoria, 2019
Background. Fish farms attract both juvenile and adult wild fishes in great numbers and diversity... more Background. Fish farms attract both juvenile and adult wild fishes in great numbers and diversity. These wild fishes also become an easy target stock for local fishers, both professional and recreational. There are three groups of interest in this study, the fish farmers, small-scale fishermen (professional), and recreational fishers (mostly anglers but also spear fishers). This study was intended to determine conflicts derived from the adverse social and bioecological interactions from the perspective of both local fishermen and fish farmers and to determine the observed incidence of predators. Material and methods. In this study, 48 randomly selected fish farms, 28 fishery cooperatives, and 33 fishing ports located close to aquaculture areas were visited for face-to-face interviews with the fishermen of small-scale fisheries (SSF) between July 2015 and July 2017. The main purpose of the survey questionnaire was to ask SSF fishermen for their opinion about offshore aquaculture and vice versa-ask the fish farmers about SSF, emphasizing issues potentially creating problems. Data were collected mainly on sociodemographic profiles, current problems, reciprocal conflict issues, the impact of offshore fish farming on SSF activities, and on bioecological interactions such as predator attacks and problems with farm fish escapes. Results. Approximately 77% of fishermen in Izmir and 71% of fishermen in Muğla declared that they had problems with the sea-cage fish farms. On the other hand, 40% of fish farmers in Izmir and 54% of fish farmers in Muğla reported problems with local SSF. The fishermen believe that in recent years, Mediterranean monk seal (Monachus monachus), sea turtle (Caretta caretta), and invasive fish (pufferfish, etc.) populations have been increasing in Muğla. Additionally, 46% of Muğla fish farmers and 60% of Izmir fish farmers acknowledged cases of fishes escaping from sea-cages. In terms of the predators, 84% of Muğla and 75% of Izmir's fishermen expressed their concerns regarding predator attacks on the sea-cage farms. Conclusion. Further studies, based on socioeconomic issues, are needed for better understanding the dimensions of incomes and economic losses of SSF and cooperation issues in the area where the interaction is high. We suggest that all stakeholders, small-scale fishermen, in particular, must be integrated with a management plan, and the cooperation among both fishing groups should be encouraged.
Vol:36 Issue:3, 2019
Structures, floating on the surface of the ocean attract both juvenile and adult fishes in great ... more Structures, floating on the surface of the ocean attract both juvenile and adult fishes in great numbers and diversity. Natural and artificial Fish Aggregation Devices (FADs) in open seas are widely recognised for their capacity to attract pelagic fishes. It can be assumed that floating sea-cages act as a kind of FAD. Even, fish aggregations beneath the sea-cages increase much more by the influence of feeding. In this study, aggregations of wild fish were counted around six sea-cage fish farms in both northern and southern Aegean Sea. Each fish farm cultivated Sparus aurata and Dicentrarchus labrax and the farms deployed between 720 m and 3 km far from the coast. Between July 2015 and July 2017, assemblages of wild fish were counted bimonthly on two separate days at each of these farms. The Rapid Visual Counts (RVC) in five minutes with SCUBA and covering 11250 m3 were performed for six times within each farm. A total of 40 species, belonging to 22 families were recorded at fish far...
A female individual of Ommastrephes bartrami, which belongs to the Ommastrephidae family, was cau... more A female individual of Ommastrephes bartrami, which belongs to the Ommastrephidae family, was caught from the shallow waters of zmir Bay (Aegean Sea). It set a new record for both zmir Bay and northern Aegean Sea of Turkey. Its morphological features were reexamined and its photograph was taken.
Effects of temperature on development and incubation of squid (Loligo vulgaris Lamarck, 1798) egg... more Effects of temperature on development and incubation of squid (Loligo vulgaris Lamarck, 1798) eggs. In this study, embryonic development time and hatching success of squid (Loligo vulgaris Lamarck, 1798) eggs, which were incubated at different temperatures, was investigated. In this purpose, total 8 experimental groups were performed at each 4 degrees of temperatures between 10°C and 22°C. The egg capsules in stage 13 (IV) which were obtained from fishermen were used in the experiments. The maximum and minimum hatching success and duration of embryonic development of the eggs were estimated as 86.9-73.5% and 43-23 days, respectively in experiment Y, and as 88.5-79.7% and 39-20 days, respectively in experiment K.
Ege Journal of Fisheries and Aquatic Sciences, 2013
In this preliminary study, it was aimed adaptation of common octopus (Octopus vulgaris) by indivi... more In this preliminary study, it was aimed adaptation of common octopus (Octopus vulgaris) by individually stocking technique. Therefore, totally 10 individuals captured from the sea, were placed in a 10 L of plastic transparent perforated bowls by individually. Adaptation periods of the species lasted 5 days with 80% of the survival rate.
Turkish Journal of Veterinary and Animal Sciences
On 2 June 2010, an abnormally pigmented specimen of Solea solea L. with a total length of 222 mm ... more On 2 June 2010, an abnormally pigmented specimen of Solea solea L. with a total length of 222 mm was obtained near Tuzla, from the Izmir Bay of the Aegean Sea. This is the first record of abnormal pigmentation in the wild common sole from the Aegean Sea. The specimen fish is patterned with both hypermelanosis on the blind side and hypomelanosis on the ocular side. This kind of malpigmentation in any flatfish is not typical.
Ege Journal of Fisheries and Aquatic Sciences, 2013
Maja crispata (Risso 1827)’nın larval gelişimi ve yaşama oranı üzerine yem:larva oranının etkiler... more Maja crispata (Risso 1827)’nın larval gelişimi ve yaşama oranı üzerine yem:larva oranının etkileri incelenmiştir. Denemeler 21,6 ± 0,5°C su sıcaklığında yapılmıştır ve larvalar beş yem:larva oranı [5 Artemia/larva (A1), 10 Artemia/larva (A2), 15 Artemia/larva (A3), 20 Artemia/larva (A4) ve 25 Artemia/larva (A5)] ile beslenmişlerdir. Tüm gruplarda, zoe I safhası 3 gün, zoe II safhası 5 gün sürmüştür. Megalop evresi tüm gruplarda 6 günde tamamlanmıştır ve larvaların juvenil evresine geçişleri A1 ve A2 gruplarında 13-14 günde; A3, A4 ve A5 gruplarında ise 12-14 günde tamamlanmıştır. Bu çalışma yem:larva oranının M. crispata larvalarının yaşama oranlarını olumsuz etkilediğini (P<0.05), ancak gelişim sürecini etkilemediğini göstermiştir.Effects of prey:larva ratio on larval development and survival rate of Maja crispata (Risso 1827) were investigated. The experiments were performed at 21.6±0.5°C, and the larvae were fed with five prey:larva ratios [5 Artemia/larva (A1), 10 Artemia/larva (A2), 15 Artemia/larva (A3), 20 Artemia/larva (A4) and 25 Artemia/larva (A5)]., The stage zoea I lasted within 3 days and zoea II stage occurred in 5 days in the all experimental groups. Furthermore, the megalopa stage took place at the same duration (6 days) for all groups. Although, the larvae reached to the juvenile stage in 13-14 days at A1 and A2 groups, within 12-14 days at A3, A4 and A5 groups. This experiment presented that prey:larva ratio affected to the larval survival rates in M. crispate (P<0.05), but did not affect the developmental duration