Open Access Original Research Article

Libido Enhancement Potential of Piper guineense in Male Wistar Rats

John Okeleke Ochei, Samson Seyi Enitan, Hyacinth Izuka Effedua, Paul Ehizibue Omodiale, Oluwatosin Giwa

Asian Journal of Biology, Page 1-9
DOI: 10.9734/AJOB/2017/36542

Background: Some spices have been reported to play contributory role in enhancing male reproductive function.

Aims: To determine the effect of Piper guineense consumption on some libido indices and behavioral pattern of male Wistar rats at different concentrations.

Study Design: This is a Cross-sectional nonclinical study in animal model.

Place and Duration of Study: The study was carried out at the Department of Medical Laboratory Science, College of Medical and Health Sciences, Babcock University, Ilishan-Remo, Ogun State, Nigeria between the month of March and June, 2016.

Methodology: Thirty (30) male Wistar rats were divided into 6 groups of five rats each (n=5). Animals in Group 1 (Control) were fed with 100% Pelletized growers feed, while Group 2, 3, 4, 5 and 6 were fed with different concentrations of P. guineense supplemented diet: 0.5, 5, 10, 15 and 20%, respectively for 28 days. On the 28th day of the experiment, female rats were introduced into the cages of the male rats (2 females to 1 male ratio) and from the cage side, the male rats were observed for mounting latency, mounting frequency and intromission frequency. The values of all the morphometric measurement, including change in sexual behaviours were analyzed statistically using SPSS 20 Software. P-value < 0.05 was considered statistically significant.

Results: The result of the libido index test show that the dry leaves of Piper guineense, in comparison with the control group, significantly (P<0.05) increased the Mounting Frequency and Intromission Frequency of the male rats, while it caused a significant (P<0.05) reduction in the Mounting Latency of the animals, especially at 10%, 15% and 20% concentration. The plant appears to induce aggression in the treated rats in a dose-dependent manner with the highest occurrence (100%) in Group 6 fed with 20% of P. guineense. No significant difference (P>0.05) was observed in the % body weight gain and testicular weight of the test rats when compared with the control group.

Conclusion: P. guineese showed potential value as a natural sexual enhancement (aphrodisiac) agent as shown by significant increase in some of the libido indicator parameters assessed.

Open Access Original Research Article

First Report on Zooplankton Abundance and Composition in Hadhramout Coast, Gulf of Aden

Ali Attaala Mukhaysin, Salem Rubaea Bazar, Moteah Sheikh Aideed

Asian Journal of Biology, Page 1-16
DOI: 10.9734/AJOB/2017/37671

Five stations were investigated to represent the Hadhramout coast in the Gulf of Aden. This area, totally or partially, is under the influence of the western Indian Ocean seasonal monsoons. Zooplankton was collected monthly during daytime in 2009 – 2010 with vertical towing of 200 µm mesh plankton nets. The zooplankton community was characterized by its high variability and diversity. 226 taxa of zooplankton were identified in the coast through the different seasons. Zooplankton community was dominated by Copepods during the four seasons, followed by Euphausiids and Chaetognatha. The peak of zooplankton abundance was in northeast monsoon. The present results showed that the composition and distribution of zooplankton differed between the monsoon seasons, but little between the stations.

Open Access Original Research Article

A Model of Ecosystem Stability and Development of Ekperiama, Niger Delta

Sabina Alatari Ngodigha, Koru Joe Alagoa, Pereowei Stephen Daworiye, Ipiteikumoh Bekewei

Asian Journal of Biology, Page 1-8
DOI: 10.9734/AJOB/2017/37284

An Ecopath model was applied to analyse the stability and development of the aquatic ecosystem in Ekperiama in the Niger Delta. A total of 23 functional groups were used to determine the key features of the aquatic system. Indicators of ecosystem stability and development analysed were: Ominivory index 0.17, connectance index 0.23, path length 2.6, relatively low biomass to throughput ratio 0.0013, acendency 56%, Finn’s cycling index 3.68, low primary production to biomass ratio 23.1 and ratio of total primary production to total respiration 0.46. These indicators are consistent with a system where moderate (or tolerable) exploitation generally drives back development to earlier stages suggesting a system in its developmental stage.

Open Access Original Research Article

First Record of Bluntnose Sixgill Shark Hexanchus griseus (Bonnaterre, 1788) (Hexanchiformes, Hexanchidae) from Hadhramout Coast, Gulf of Aden

Moteah Sheikh Aideed, Ali Attaala Mukhaysin

Asian Journal of Biology, Page 1-7
DOI: 10.9734/AJOB/2017/37805

The new record of Hexanchus griseus (Bonnaterre, 1788) based on 148.1cm as total length was collected during the traditional fishing activities in Hadhramout coast, north east Gulf of Aden, Yemen. It is compared with the specimen from the same species in the literature in terms of morphometrics and lower teeth. The analysis of the teeth of the current specie with H. nakamurai, do not let doubt that these characteristics linked to the new record of Hexanchus griseus in the Gulf of Aden for first time.

Open Access Original Research Article

Insect Species Diversity and Abundance in and around Federal University of Agriculture, Makurdi Forestry Nursery, Benue State, Nigeria

G. O. Yager, F. S. Agbidye, E. S. Adma

Asian Journal of Biology, Page 1-11
DOI: 10.9734/AJOB/2017/38840

With the rapid increase in human population, there has been concomitant increase in anthropogenic activities helping to rise to habitat modification. The change in habitat composition and seasonal variations affect the population of insects. The aim of the study therefore, was to investigate the insect species diversity and abundance in and around the Federal University of Agriculture, Makurdi Forestry Nursery with the view to ensuring healthy seedling production. Line transects were used to survey the three habitats within and around the forestry nursery using handheld sweep nets and pitfall traps from August 2016 to February 2017. Data were analyzed using descriptive statistics, one-way analysis of variance and composition was estimated using diversity indices. A checklist was made comprising a total number of 810 individuals from 8 Orders 25 Families and 50 species were recorded across the three habitats. Out of these, members belonging to order Hemiptera were the most dominant (35.8%) according to number of individuals, followed by Lepidoptera (16.91%), and the least were Coleoptera (2.72%) and Dictyoptera (2.60%) respectively. The major insect pest encountered in the nursery was mealybugs. The Swampy part of the Nursery and the URF had similar species composition. Species diversity, evenness and richness varied from habitat to habitat. However there was no significant difference in species composition/richness across the habitat types at 0.05% level of significance. Therefore it was recommended that, measures should be taken to control insect pest infestation in the nursery to ensure healthy production of seedlings.