OPEN ACCESSInternational Journal Of Aquatic Science ISSN: 2008-8019

 Journal

 Morphological Traits Characterization Of Macrobrachium Macrobrachion(Herklots, 1851) And Macrobrachium Vollenhovenii (Herklots, 1857) From Osun River, Southwestern, Nigeria .

 Abiodun Adeyemi Eniade1*, Dominic Olabode Odedeyi1, Oluayo Bello-Olusoji2 And Olabode Thomas Adebayo

 2019

Abstract: Morphological traits used in taxonomic separation of M. macrobrachion and M. vollenhovenii into two distinct species were reviewed. Observations from non-parametric traits revealed that M. macrobrachion exhibited absence of spinules on the palm; short and scanty pubescence on telson and uropod; a region of rostral spines discontinuity and presence of apical tooth on the dorsal part of rostrum which distinguished it from M. vollenhovenii. Measurements of parametric traits showed that there were no significant variations (p>0.05) in the mean total lengths, carapace lengths and rostral lengths between male to male and female to female specimens of the two prawns. Also, no significant variation (p>0.05) existed in their mean body weights, although specimens of M. vollenhovenii appeared more robust in body shape. Mean chela lengths (right and left) were higher for M. macrobrachion than for M. vollenhovenii. Meristic count of dorsal spines on rostrum ranged from 8-15 and 8-16 while that of ventral spines ranged from 3-7 and 3-8 for M. macrobrachion and M. vollenhovenii respectively. The results obtained in this study revealed that these prawns are easily separable based on their morphological traits. However, further study is recommended for their genetic characterization to validate their true existence as separate species 

 Journal Of Natural Sciences Research

 Journal

 Seasonality Effect On Habitat Status Of Macrobrachium Prawns On A Section Of Ogun-Osun River Basin Channel, Nigeria

 Eniade, A.A.; Odedeyi, D.O.; Bello-Olusoji, O.A.; And Adebayo, O. T.

 2018

The effect of seasonal changes on habitat conditions and biological well-being of Macrobrachium prawns on a section of Ogun-Osun River Basin Channel, Southwestern Nigeria was investigated between June, 2015 and April, 2017. Morphological characterization of specimens collected revealed two populations of prawns in the genus Macrobrachium (M. macrobrachion and M. vollenhovenii) foraging together on this location. The study revealed that there is no significant variation (P>0.05) in the water quality parameters between seasons while sediment textural compositions vary significantly (P>0.05) between seasons. M. macrobrachion were more abundant in rainy seasons while M. vollenhovenii were more in dry seasons. However, condition factor (k) of the two prawns was better in rainy seasons than dry seasons. Results from this study revealed that seasonality affects habitat compositions and biological well-being of Macrobrachium prawns. Consequently, scientific observations recorded in this study will serve as important references in cultivation, assessment and management of prawn fisheries. Key words: Habitat, Seasons, Macrobrachium prawns, Ogun-Osun River Basin Channel, Nigeria. 

 Journal Of Natural Sciences Research

 Journal

 Water Quality Parameters Of Olumirin Waterfall In Relation To Availability Of Caridina Africana (Kingsley, 1822) In Erin-Ijesa, Nigeria.

 Oyekanmi FB, Bello-Olusoji OA And Akin-Obasola B J.

 2017

The water parameters of Erin-Ijesa waterfalls and the abundance of Caridina africana were studied for two consecutive seasons. Water and prawn sampling were carried out bi-weekly. Prawns were collected with scoop and hand nets. Transported to the laboratory for examination for further analysis.. the physicochemical parameters of the water sample collected were determined using standard methods, the following parameters were determined; temperature (°C), conductivity (?ohms/cm), pH, alkalinity, Population index of the prawns such as frequency of occurrence, relative abundance, sex ratio, male:female ratio, index of occurrence were determined. Prawn number, sex and age were more during the wet season with a peak in August. Both adults and juveniles showed a progressive increase from November to August. The results shows that average water Temperature was 27.77 ± 2.27°C, Transparency 1.71±0.39m, Depth 1.43±0.22m, Dissolved Oxygen 6.21±0.77mg/l, pH 7.25±0.68, Alkalinity 136.62±41.6mg/l, Total Dissolved Solid 402.13±253.25mg/l, Conductivity 83.40±1.86?ohms/cm, Nitrate 4.76±0.76mg/l and phosphate 0.28±0.05mg/l. Erin-Ijesa waterfalls exhibited features that are typical of tropical environment, which fell within a range that can support aquatic life. High value in Condition factor for C. africana revealed the adaptability and total well being of the specie despite the unstable nature of the waterfalls. 

  IJFAS Www.fisheriesjournal.com

 Journal

 Length-weight Relationship And Condition Factor Of Shrimps In Coastal Waters Of Ondo State, South West, Nigeria

 Olawusi-Peters Olamide O, Ajibare Adefemi O* And Bello-Olusoji Oluayo A.

 2014

The Length-Weight Relationship (LWR) and condition factor (K) of Nematopalaemon hastatus, Farfantepenaeus notialis, Parapenaeopsis atlantica and Macrobrachium macrobrachion obtained from the coastal waters bordering Ayetoro, Bijimi, Asumogha and Idiogba of Ondo States, Nigeria between September and December, 2011 were studied. The length-weight relationship of the sampled shrimps had regression coefficient ranging between (b= 1.01) in M. macrobrachion caught in Bijimi in September to (b= 3.26) in P. atlantica caught in Bijimi in November. The b coefficients were not equal to 3 in the individual species, hence growth were allometric (b values were lesser/greater than 3). The highest condition factor (K = 0.57) and the lowest (K =0.48) in N. hastatus were recorded in December (at Ayetoro) and September (at Idiogba) respectively, while in P. atlantica, the lowest condition factor (K = 0.32) was recorded in September at Ayetoro, and the highest value (K = 0.52) was recorded in December at Bijimi. The months of September and October had the highest condition factor (K = 0.44) in F. notialis caught from Ayetoro location while the lowest K value of 0.31 was recorded in specimens caught at Idiogba in October. The range of K values which was from 0.46 (Bijimi in November) to 0.82 (Idiogba in October) in M. macrobrachion indicated that the shellfishes examined from four locations in Ondo State coastal area were in good and healthy conditions. 

  Food ©2012 Global Science Books

 Journal

 Determination Of Mineral Trace Element And Proximate Analysis Of Fish Feed

 Modupe O. Dawodu, Godwin O.Olutona, Funmilola Ajani And O.A. Bello-Olusoji

 2012

Quality control in the feed industry does not only involve the verification of quality, standards established for each feed ingredient as it is received unto storage in the mill, but also involves the close monitoring of the quality of the ingredients through the period of storage prior to usage and during its processing. Quality control continues as ingredients emerge during the mixing process and as they finally go into storage as compound feed. Hence, proximate composition of four different directories' fish feed formulation were examined. The results obtained from the feed samples analyzed showed that the mean values (%) range of crude protein was 57.29 ± 0.19 to 62.61± 0.13; moisture content (5.12 ± 0.06 to 8.26 ± 0.06); crude fat (10.92 ± 0.14 to 13.07 ± 0.04); carbohydrate (32.72 ± 0.17 to 36.16 ± 0.14); crude fibre (0.45 ± 0.08 to 0.65 ± 0.02); ash content (5.91 ± 0.13 to 7.31 ± 0.06); and energy (0.54 ± 0.04 to 0.57 ± 0.03 KJ/g). The mean values (?g g-1) of mineral nutrients analyzed ranged were Zn (9.64 ± 0.06 to 15.05 ± 0.06), Fe (6.01 ± 0.04 to 19.02 ± 0.03), Mn (2.57 ± 0.17 to 7.80 ± 0.06), Cu (4.92 ± 0.11 to 10.10 ± 0.08) and P (1.41 ± 0.004 to 3.10 ± 0.08). The percentage of crude protein in each feed formulation was comparatively equal to the same dietary formulations in the literature. 

 Academic Journals

 Journal

 Effects Of Feed Forms And Feeding Frequency On Growth Performance And Nutrient Utilization Of Clarias Gariepinus Fingerlings

 Ajani F.1*, Dawodu M. O.2 And Bello-Olusoji O. A.

 2011

12-week feeding experiment was conducted to determine the optimum feeding frequency and best feed form for the growth and nutrient utilization of African catfish Clarias gariepinus. Three replicate groups of fish (average weight of 3.05+ 0.25 g) were fed at 5% body weight using either floating or sinking pellets at different feeding frequencies (three meals a day, two meals a day or one meal a day) in a 2 × 3 factorial experimental design. The mean weight gain and daily feed intake of the fish were not affected significantly by the feed forms; however the fish fed with floating pellets had a slight higher weight gain than those fed with the sinking pellets. The weight gain and daily feed intake of fish fed floating or sinking pellets twice a day and thrice a day were significantly higher than that of the fish fed once in a day (p < 0.05). The feeding frequency did not have any effect on the feed efficiency and protein efficiency ratio in the fish fed with sinking pellet but these variables were significantly (p < 0.05) affected in the fish fed once in a day when compared with other feeding frequencies while using floating pellet. The feeding frequencies and feed forms had no significant effect on the protein content of the fish carcass. Significant differences (p < 0.05) were recorded in the lipid content of fish as feeding frequency increases. It is therefore concluded that any of these fish feed forms can be fed at twice or thrice per day effectively for optimum result in the growth of C. gariepinus. 

 African Journals Online

 Journal

 Smoking Impact On The Microbial Load Of Clarias Gariepinus

 OA Abidemi-Iromini, OO Olawusi-Peters, A Fadeyi, OA Bello-Olusoji

 2009

Effects of different smoking methods on microbial load on freshly collected freshwater mud fish, Clarias gariepinus samples from Oyo State Fisheries Department, Ibadan in South-Western Nigeria was carried out. Seventy-two C. gariepinus (505 ± 0.45g and 25.5 ± 1.30cm) were collected and sorted into 4 groups. 10 fish samples from groups 1, 2 and 3 were subjected to cold smoking, hot smoking and oven drying methods respectively using group 4 as standard. Samples were tested for microbial loads in triplicate at the end of 24, 48 and 72 hrs. Some of the microbes identified were; Streptococcus faecium, Proteus vulgaricus, Pseudomonas aureginiosa, Bacillus cereus; Micrococcus acidiophilus, Aerobacter aerogenes, E. Coli, Streptococcus pyrogenes, Streptococcus lactis, Bacillus subtilis, Pedio cerevisiae, Sacchomyces Sp, Fusarium oxysporum, F. compacticum, Penicillium oxalicum, P. chrysogenum, Aspergillus tamari, A. niger, Cladosporum sphacrosporum, Aspergillus terreus and Rhizopus nigericans. Others are Pseadomonas, Alteromonas, Moraxella, Acinetobacter, Flavobacterium, Cytophaga, Vibrio, Aeromonoas, Staphylococcus aureus, Samonella faecuim, P. fragii. Microbial load for cold smoked products were 72%, 66% and 38%; hot smoked products had 61%, 32% and 08%; while oven-dried had 12%, 0% and 0% at 24, 48 and 12 hrs respectively. Positive correlation r = 0.94, 0.92 and 0.51 were observed between the microbial load processing methods – oven dried, hot-smoked and cold-smoked respectively. Cold smoked had 41.63% C.P and oven-dried had 25.73% C.P. Consumers had highest preference (40%) for hot smoked, 35% for oven dried and 25% for cold smoked products. 

 Wilolud Journals,

 Journal

 THE ABIOTIC ECOLOGY OF BREEDING GROUND OF PALAEMONID PRAWNS IN THE ILAJE ESTUARY, ONDO STATE, NIGERIA.

 Eniade, Abiodun Adeyemi And Bello-Olusoji, A. Oluayo

 2009

ABSTRACT In situ ecological assessment of the breeding grounds of palaemonid prawns was conducted in some selected locations around Ondo state coastal area between the months of April and September. Data obtained were subjected to both descriptive and inferential statistics. Three species of Palaemonid prawns were identified in four different locations within the study area with relative abundance ratio of 4:3:1. Macrobrachium macrobrachion,Nematopalaemon hastatus and Palaemon maculatus respectively.Sex ratio of 1 male to 5 females for M. macrobrachion, and 1 male to 2 females for N. hastatus and P. maculatus were observed with result showing significant relationships (P < 0.05) in distribution patterns across collection sites. Population distribution within the water column showed that palaemons are sub-lithoral prawns inhabiting maximum mean depth of 0.67m ± 0.025. Surface macro-phytes such as Eichhornia crassipies, Paspalum vaginatum, and Pistia stratiotes are common providing hiding spots for the prawn at the breeding ground. The mean soil pH across the sites stands at 6.67± 0.399 with the soil textural class that range from silty-loam to silty-clay. Also, the water quality parameters of study areas suggest that captive culture and rearing of Palaemons may be feasible outside the breeding areas. 

 Journal Of Natural Sciences Research

 Journal

 Journal Of Biological Studies JBS Https://onlinejbs.com/ Vol.1(1): 76-89, 2018 ISSN 2209-2560 76 Research Article Aspects Of Habitat Ecology Of Macrobrachium Vollenhovenii (Herklots, 1857) On The Lower Volta River, Ghana

 Niade, Abiodun Adeyemi A * Odedeyi, Dominic Olabode A ; Bello-Olusoji, A. Oluayo B ; Adebayo, Olabode Thomas B , Agyakwah, Seth Koranteng C

 2006

Water quality parameters, river sediment texture, percentage abundance of species, fish and plants associated with the habitat of African giant prawn, M. vollenhovenii (Herklots, 1857) were studied at the Eastern Region of Ghana on Lower Volta River Basin Channel between June- 2015 and May- 2017. Analysis of the physico-chemical properties revealed a low level of seasonal fluctuations as obtained values for pH, salinity, temperature, ammonia and phosphates were not significantly different ( p >0.05) based on seasonality. Results of this study revealed that most water quality parameters including heavy metals ions were within the thresholds recommended for surface water and fresh-water fish aquaculture except for K + , Ca 2+ , Cu 2+ , Zn 2+ and Pb 2+ ions . The river sediments’ texture was sandy loam with low organic matter percentage compositions and an average pH value range (4.96±1.33-5.33±0.95) which is weakly acidic. The water depths across the sampling locations ranged between 5.13±2.6fts and 15.80±4.92 fts and showed that the prawn is a sub-lithoral animal. Catch statistics revealed higher percentages of males at both seasons. Oreochromis niloticus , Parachana obscura and Atya gaboniensis were found foraging with M. vollenhovenii; while Eichhornia crassipes, Ipomoea aquatica, Diplazium sammatii and Leptochloa caerulescens were flora species providing hiding spots for M. vollenhovenii in this habitat. Conclusively, M. vollenhovenii population around this study location inhabits an exclusively fresh-water ecosystem which can be simulated for captive culture of this prawn. Aquaculture of this prawn is therefore recommended. 

 Bello-Olusoji, O. A

 Others

 Studies On The Ecology Of The African River Prawn, Macrobrachium Vollenhovenii (Hecklots 1857), (Ph.D) Thesis

 Bello-Olusoji, O. A

 1999

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