Category Archives: Fishery

Biology of the Lessepsian Pufferfish Lagocephalus suezensis ‎‎(Clark & Gohar, 1953) in Syrian Marine waters:‎ Length-Weight Relationship and Gonads Development Stages

Mai Masri*(1) and Waad Sabour(2)

 (1). Department of Animal Production, Faculty of Agriculture, Tishreen University, Lattakia, Syria.

(2). Department of Animal Biology, Faculty of Science, Tishreen University, Lattakia, Syria.

(*Corresponding author: Mai Masri. E-Mail: mememasri96@gmail.com)

Received: 16/02/2020                               Accepted: 01/04/2020

Abstract

The length-weight relationships (LWRs) were determined for (320) specimens of Lagocephalus suezensis captured in the Syrian seawaters (Eastern Mediterranean). The histological study of gonads at  different development stages was performed. Fishing samples were taken with trammel net at a depth between 3 and 50 m, during April 2014 and September 2015.Total length and weight of each specimen were recorded with accuracy of 0.1 cm and 0.01 g, respectively. The calculated values of (b) were 2.8932 for male individuals and 2.8416 for females. The coefficient of determination (R2) was significant for all individuals. The types of growth for both sexes were negatively allometric. The development stages and gonad maturation, are similar with regard to the tissue structure and the form of gonads, and for the six development scale.

Key words: Lagocephalus suezensis, Lessepsian pufferfish, LW relationship, Histological structure Gonads, Syrian seawaters.    

Full paper in English: PDF

First Documented Record of Dogtooth Grouper Epinephelus caninus (Valenciennes, 1834), Perciformes, Serranidae, in the Syrian Marine Waters

Adib Ali Saad*(1) Ahmad Kamel  Solaiman(2) and Hasan Haitham Alkusairy(1)

(1). Marine Sciences Laboratory, Faculty of Agriculture, Tishreen University, Latakia, Syria.

(2). Animal Production Department, Faculty of Agriculture, Tishreen University, Latakia, Syria.  

(*Corresponding author: Dr. Adib Ali Saad. E-Mail: adibsaad52@gmail.com).

Received: 02/05/2018                                Accepted: 01/10/2018

Abstract

In this work, the first documented record of dogtooth grouper Epinephelus caninus in the Syria coast. A specimen (181 mm TL) was captured on 20th February 2018 using a trap-net at a depth 30 m. The capture site was located 50 m off coast of Tartous city (35° 91´ E, 35° 87´ N). The identification of the present specimen of Epinephelus caninus was based on morphological features, colour, and morphometric measurements and meristic counts.

Keys words: Syrian coast, Eastern Mediterranean, Epinephelus caninus, First record.

Full paper in English: PDF

The Effect of Addition of Diets Pigmentation Colour on the Feeding and Growth of Carp Cyprinus carpio (L.1758) Juvenile under Lab Conditions

Khalid William Farnar(1) and Qusay Hamid Al-Hamadany*(2)

(1). Department of Aquaculture and Marine Fisheries, University of Basrah, Basrah, Iraq.

(2). Marine Science Center, Basrah, Iraq.

(*Corresponding author: Qusay Hamid Al-Hamadany. E-mail: qusayhamid@yahoo.com).

Received: 09/06/2019                                Accepted: 24/07/2019

Abstract

This research studied the effect of using artificial colored diets on feeding common carp juvenile Cyprinus carpio in plastic basins under laboratory conditions with an initial length and weight of 3.25 ± 0.1405 cm and 16.216 ± 0.1512 g respectively. Four treatment (A, B, C and D) were used depending on the color of the diets, as follows: treatment A as (control), treatment B in a green color, treatment C in a red-colored and treatment D in a blue-colored. The juveniles were distributed as 30 juveniles in each basin, the experiment lasted for 60 days. The fish were fed daily with two meals. The results of the present study showed that the treatment in red color was the most color-motivated and responsive by the fish of the experiment and with a shorter period of time compared to the rest of the treatments followed by treatment in blue and green color. The fish in the treatment C recorded the highest weight up to 121.50 g and the lowest weight in treatment A recorded 95.196 g. The highest value of the relative growth rates of fish at the end of the experiment was 659.47 % in treatment C and below 528. 31 % in treatment A and qualitative growth at the end of the experiment above 3.379 (% g/day) in treatment C below 3.063 (% g/day) in treatment A shorter time span for food exploration and feeding response was 32 seconds and a time interval of 19 minutes and 44 seconds for consumption of all food, while in treatment A the fish took longer to explore food and respond to feeding 15 minutes and 52 seconds and 1 hour, and 3 minutes and 34 seconds for consumption all food.

Keywords: Common carp, Colored diets, Growth rate.

Full paper in Arabic: PDF

Growth and Reproduction of Largemouth Bennini Cyprinion macrostomum in Tigris River, Iraq

Ameer Suood Alwan Hamad*(1) and Nehad Khorsheed Wahab(2)

(1). Department. of Agricultural Research, Ministry of Agriculture, Iraq.

(2). Animal production Department, Faculty of Agriculture, Tikrit University, Iraq.

(*Corresponding author: Ameer Suood Alwan Hamad. E-Mail: ameer.suood@yahoo.com).

Received: 02/07/2019                                Accepted: 27/08/2019

Abstract

Growth and reproduction of largemouth Bennini Cyprinion macrostomum was studied in Tigris river in Tikrit region, Iraq, during September 2013 to June 2014. 459 fish were collected, and the total length ranged between 11.8-24.7 cm and their total weight ranged from 19.9 to 184.58 g. The group of length of 14-16 cm accounted the largest percentage 40.52% of total fishing (1549) in September. The value of b=2.99 means that the growth was isometric. The condition factor ranged between 0.73-2.67 with average of 1.22. Condition factor differed according to sex and length. Sex ratio (male: female) tended to female 1:1.57. The highest gonadosomatic index for female was 7.17 and for male was 2.69 in June and the spawning period extended from May and June until August. The smallest length of a mature male reached 13.1 cm and in a mature female was 19.3 cm.

Key words: Growth, Reproduction, Cyprinion macrostomum, Tigris river, Iraq.

Full paper in Arabic: PDF

The Replacement Effect of Soybeans by Potatoes and Eggplant Peels on Common Carp Cyprinus carpio L. Juveniles Growth

Khalid William Farnar*(1)

(1). Department of Marine Vertebrate, Marine Science Center, University of Basrah, Basrah, Iraq.

(*Corresponding author: khaled_msc62@yahoo.com).

Received: 12/06/2019                                Accepted: 03/08/2019

Abstract

The replacement effect of soybeans by potatoes peels and eggplant peels was studied to feed the common carp Cyprinus carpio L. Juveniles under laboratory conditions in Marine Science Center, University of Basrah, with an initial length and weight of 2.2 ± 0.1405 cm and 1.819 ± 0.0753 g respectively, the experiment continued for a period of 60 days starting from April 2017. The aquariums were equipped with air pumps for 24 hours throughout the day, and the fishes were fed two meals daily. The environmental parameters within the limits appropriate for the growth of carp, the results showed a significant statistical difference in growth rates between fishes in experiment aquariums where the highest weight recorded at the end of the experiment for the Juveniles in the aquarium B which was 26.471 g, followed by Juveniles in the aquarium D was 21.453 g then the fishes in the aquarium C amounted to 18.186 g and finally the Juveniles in the aquarium A which recorded 16.984 g. The study showed that the replacement of soybeans by potatoes peels gave the best increase in weight at the end of the experiment as in the aquarium B which was 8.642 g/week compared with the aquarium D, C and A, that gave 7.371 and 5.731 and 5.367 g/week respectively, and with a daily weight increase during the experiment period amounted to 0.253, 0.409, 0.275 and 0.327g/day of experiment aquariums A, B, C and D respectively.

Key words: Soybeans, Potatoes peels, Eggplant peels, C. carpio.

Full paper in English: PDF