Scientific Program

Conference Series Ltd invites all the participants across the globe to attend 9th World Congress on Aquaculture & Fisheries Dubai, UAE.

Submit your Abstract
or e-mail to

[email protected]
[email protected]
[email protected]

Day 2 :

  • Track 6: Fisheries Management and Policy
Speaker
Biography:

Bilikis Iyabo Uneke holds a doctorate in Fisheries Biology. She is a leading researcher and lecturer in the Department of Biological Sciences, Ebonyi State University, Nigeria. In the last decade, her work has focused on aquaculture, stock assessment, modeling, fisheries management and policy. She has worked extensively on the parasites of teleost fishes of the inland waters of southeastern Nigeria.

Abstract:

The fish live in balance with the parasites, but this balance can be broken mainly by environmental disturbances, among which the changes in the water quality have a relevant role, as well as inadequate management and high stocking densities of fishes. Thus the prevalence of protozoa parasites in Tilapia zilli in Ebonyi River, Southeastern Nigeria. Samples were collected from Ebonyi River and protozoan parasites were isolated using standard laboratory method. The result showed that out of 120 fish of T. zilli 61.7% were infected by protozoan, while 38.3% were not infected. Eimeria spp  (Coccidia) had the highest prevalence of (32.4%) while Euchynorhycus, Chlodonella, Dactygyrus  and Ichyobodo had the lowest prevalence of 1.4%, 2.7%, 4.1% and 4.1%) respectively. Other parasites identified included Triochodina (18.9%), Piscinoodouium (9.5%) Hexemita (10.8%) Teczospina (5.4%) and H. intestinal (10.8%). This study revealed that T. zilli with length ranges from 5.1-7.5 TL cm (Total length) were most prone to protozoan infection while those ranging from 19.6-20.5 TL cm and above were least infected. The prevalence of protozoan infection in T. zilli in relationship to the weight, showed that T. zilli  with weight ranges from 8-20g were more  infected by protozoan than those with weight ranges from 131-140 and above indicating that smaller fishes were more susceptible to parasitic infection; therefore consumers should pay more attention to the size of fish they consume.

Table 1. Prevalence of protozoan parasite in T. zilli

Protozoa parasite

No. of parasites isolated

% prevalence

Emeria sp

24

32.4

Trichodina sp

14

18.9

Piscinoodonium sp

7

9.5

Hexemita sp

8

10.8

Teczospina sp

4

5.4

Euchynorhycus sp

1

1.4

Dactygyrus sp

3

4.1

Icthyobodo sp

3

4.1

Chlodonella sp

2

2.7

H. intestinalis

8

10.8

Total

74

 

 

  • Track4:Biotechnology and Genetics in Aquaculture
Biography:

Abstract:

Thirty Lates niloticus (Linnaeus, 1758) from three (3) Nigerian waterbodies were genotyped on six (6) RAPD primers and five (5) microsatellites loci. RAPD revealed that effective number of alleles (AE) at population level per locus was within the range of 1.641 ± 0.066 to 1.645 ± 0.041 while the mean number of alleles (AN) across populations equals 2.000. Characterization on five (5) microsatellites loci revealed genetic diversity within and among studied populations. Observed heterozygosity (HO) was within the range of 0.317 ± 0.335 to 0.523 ± 0.315 while expected heterozygosity (HE) was within the range of 0.414 ± 0.306 to 0.715 ± 0.097. Proportion of differentiation (FST) within populations was 0.236. Overall gene flow (Nm) among populations equals 0.806. This study established the successful use of RAPD and microsatellite as tools for studying population structure of fish species, especially L. niloticus.  Thus, it can be concluded that L. niloticus in the three (3) sampled Nigerian waterbodies is undergoing evolution.

Biography:

Abstract:

Addition of cholesterol-loaded cyclodextrin (CLC) to the diluents of mammalian semen increased stability and rigidity of phospholipid hydrocarbon chains of plasma membrane during sperm cryopreservation process. CLC has been tested successfully as cryoprotectant in various livestock sperm cryopreservation protocols but its efficacy for cryopreserving of fish sperm has not previously been tested. In the present study, different cholesterol loaded cyclodextrin concentrations were evaluated for the cryopreservation of carp (Cyprinus carpio) sperm. Sexually mature fish were induced to spermiation and ovulation with Ovopel. The extenders were prepared by using 300 mM glucose and 10% DMSO supplemented with different concentrations of CLC (0.5, 1.0, 1.5, 2.0, 2.5, and 3.0mg per 120×10(6) spermatozoa) and without CLC (control). The pooled semen was diluted separately at a ratio of 1:3 (v/v) by using CLC extenders. Diluted semen placed into 0.25 ml straws were equilibrated at 4°C for 15 min and frozen in liquid nitrogen vapor. Fertilization was conducted using a ratio of 1×10(5) spermatozoa/egg. Fresh sperm with no treatment showed the greatest sperm motility, duration of motility, viability, and fertilization results compared to the other tested cryopreserved and control groups (p<0.05). Supplementation of 1.5 mg CLC to the extender showed the best cryoprotective effect for sperm motility, duration of motility, and viability against freezing damage in comparison to extenders containing 2.5 mg, 3.0 mg CLC, and control group (p<0.05). Cryopreserved sperm containing 1.5 mg CLC provided greater result in term of fertilization success when compared to other extenders containing 0.5, 2.5, and 3.0 mg CLC or control (p<0.05). The amount of CLC effected post-thaw sperm quality and fertility as a dose-dependent manner. It is concluded that treatment of cholesterol-loaded cyclodextrin for carp sperm cryopreservation significantly improves cell cryosurvival and fertilization.

  • Track 11:Culture of Fishes, Crustaceans, Molluscs and Aquatic Plants
Biography:

Abstract:

Clarias gariepinus commonly called “pure Clarias” and its hybrid strain; Heteroclarias are the commonest cultured fish species among fish farmers in Nigeria. One of the constraints to successful fish culture, is that of provision of suitable feed type that is readily acceptable to the cultured species and that can give a maximum growth performance within the shortest possible time.   This experiment was conducted to investigate the growth performance, nutrient utilization and survival rate of Clarias gariepinus and Heteroclarias fingerlings fed with coppens feed over a period of 15 weeks (105 days).  A total 100 fingerlings each were stocked in two tanks (2.6mX 2.2mX 1.8 m) in the Departmental Hatchery unit. The fishes were fed the same diet at 5% body weight twice daily at 9.00am and 4.00pm respectively, except on weighing days. Key physico-chemical water qualities and growth parameters of the experimental fishes were monitored weekly. Mean weight gain for Clarias gariepinus and Heteroclarias at the end of experiment was 11.23 g and 9.16 g respectively. The feed conversion ratio (FCR) was 5.17% and 5.05% respectively for Clarias gariepinus and Heteroclarias while feed conversion efficiency (FCE) was 0.19 and 0.20 respectively which was not significantly different (p> 0.05).  The survival rate for the species was 0.97 and 0.88 respectively for Clarias gariepinus and Heteroclarias. The findings of this study has revealed that the two species respond positively well to coppens feed.

  • Track 8: Advances in Aquaculture Nutrition
Biography:

Abstract:

The gustation and growth performance of Nile tilapia, Oreochromis niloticus fed African basil, Ocimum gratissimum leaf meal supplemented diet was assessed in the present study. O. niloticus of the initial weight of 11.85±0.24 was evaluated over a 56 days period. Five experimental diets were formulated at 0 mg/g (control), 20 mg/g, 40 mg/g, 60 mg/g and 80 mg/g inclusion levels of O. gratissimum. African basil leaf was treated by soaking in water for 72 hours and sun-dried. All diets were isonitrogenous with each treatment having three replicates. Fish fed the 80mg/g O. gratissimum leaf meal recorded the best growth performance in body weight gain and specific growth rate (SGR). Statistically, there was significant increase in growth and nutritional performance of fish in this study with increasing inclusion levels of O. gratissimum (P<0.05). There was no adverse effect of O. gratissimum supplementation on the hepatosomatic and intestinosomatic index of fish in this study (P<0.05). There was also significant increase in the gustation of fish with increasing O. gratissimum supplementation (P<0.05). This could be attributed to the supplementation of O. gratissimum. Therefore, the present study suggests that O. gratissimum leaf meal may be supplemented up to 80 mg/g level to increase gustation and growth performance of O. niloticus.   

Speaker
Biography:

Dr. Muchlisin is a Professor in Applied Ichthyology (Fisheries Managgement & Aquaculture) . He was graduated in Aquaculture from University of Riau, Indonesia (Bachelor in Aquaculture). He started working for Syiah Kuala University from 1999 to present. Muchlisin was completed his M.Sc & Ph.D Degree from Universiti Sains Malaysia in Aquaculture&Ichthyology, respectively. He has published many papers in several reputable journals and editor for several journals , proceedings and books & reviewer for some referred journals

Abstract:

The objective of the present study was to determine the optimum dose of papain enzyme in the diet for growing, survival rate and feed efficacy of climbing perch (Anabas testudineus). The study was conducted at the Laboratory of Aquatic of Faculty of Veterinary, Syiah Kuala University from January to March 2016. The completely randomized design was used in this study. Six dosages level of papain enzyme were tested with 4 replications i.e. 0 g kg-1 of feed, 20.0 g kg-1 feed, 22.5 g kg-1 of feed, 25.0 g kg-1 of feed,  27.5 g kg-1 of feed, and 30.0 g kg-1 of feed. The experimental fish fed twice a day at feeding level of 5% for 60 days. The results showed that weight gain ranged from 2.41g to 7.37g,  total length gain ranged from 0.67cm to 3.17cm, specific growth rate ranged from 1.46 % day to 3.41% day, daily growth rate ranged from 0.04 g day to 0.13 g day, feed conversion ratio ranged from 1.94 to 3.59, feed efficiency ranged from 27.99% to 51.37%, protein retention ranged from 3.38% to 28.28%, protein digestibility ranged from 50.63% to 90.38%, and survival rate ranged from 88.89% to 100%. The highest rate for all parameters were found in the dosage of  3.00% papain enzyme kg feed. The  ANOVA test showed that enzyme papain gave a significant effect on the weight gain, total length gain,  daily growth rate, specific growth rate, feed conversion ratio, feed efficiency, protein retention, protein digestibility, and survival rate of the climbing perch (Anabas testudieus). The best enzyme papain dosage was 3.0%.

Speaker
Biography:

Oyas Ahmed Asimi has served in Department of Fisheries for 7 years as technical expert with Joint Director Fisheries. Presently working in Fish Nutrition as Senior Assistant Professor. As per mandate of our university i.e., teaching, research and extension, all the three mandates were covered within fish nutrition research. I have worked particularly in enhancement of fish immune system and growth with intervention of some herbs.

Abstract:

The main constraint presently is the availability of sufficient/required quantity of cost effective quality feed. At present one of the main fish feed ingredient (fishmeal) is procured from outside the state due to which the cost of production is very high. In order to make available sufficient quantity of cost effective feed and cater to the demand of various rearing units for feed in the State, it is high time to replace fishmeal with alternate source of protein. Kashmir valley produces good quantities of feed materials derived from crops and other sources. These include a wide variety of oil-seed cakes and meals, pulses, and mill by-products of seeds and grains. Also available are appreciable quantities of by-products from the meat, fish, fruit processing industries and particularly silkworm pupae. Keeping in view the nutritional value of silkworm pupae and its profuse availability in the state, cost effective feed could be formulated and feeding trails in coldwater aquaculture could be conducted. Lot of research has been done on the replacement of fishmeal throughout the world.

  • Track 2: Aquatic Resources and Environmental Management

Session Introduction

veena soni

Jai narayan vyas university, India

Title: EFFECT OF AQUACULTURE ON WORLD FISH SUPPLIES
Biography:

Abstract:

Global production of farmed fish and shellfish has more than doubled in the past 15 years. Many people believe that such growth relieves pressure on ocean fisheries, but the opposite is true for some types of aquaculture. Farming carnivorous species requires large inputs of wild fish for feed. Some aquaculture systems also reduce wild fish supplies through habitat modification, wild seed stock collection and other ecological impacts. On balance, global aquaculture production still adds to world fish supplies; however, if the growing aquaculture industry is to sustain its contribution to world fish supplies, it must reduce wild fish inputs in feed and adopt more ecologically sound management practices.