Scholarly works in Wildlife and Ecotourism Management

Permanent URI for this collectionhttps://repository.ui.edu.ng/handle/123456789/599

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Author: search.filters.author.Coker, O. M.Subject: search.filters.subject.Correlation

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    Morphometrics of two edible frog species [Crowned Bullfrog (Hoplobatrachus occipitalis), and Medine Grassland Frog (Ptychadena pumilio)] in Ibadan, Nigeria
    (Federal University Wukari, 2022) Coker, O. M.; Ogundare, A. D.
    Edible frog species are integral part of the economy as they are used as an alternative source of protein and are involved in international trade. Conservation efforts on them require information on their morphometry, which is scarce. Therefore, this study documents the preliminary morphometrics of two edible frog species [crowned bullfrog (Hoplobatrachus occipitalis), and medine grassland frog (Ptychadena pumilio)] in Ibadan, Nigeria. Twenty seven (27) live samples of adult H. occipitalis and Six (6) live samples of P. pumilio were used for this study. Live weights (LW) and 15 other external body measurement were taken. Means and standard deviations were computed. The T-tests and Pearson's correlation coefficients were conducted at p<0.05. The LW [52.14+39.58; 22.00+14.20] and Snout-vent length (SVL) [7.83±2.19; 7.00±2.00] in H. occipitalis were significantly higher than that of P. pumilio. The LW in H. occipitalis showed significant (p<0.05) positive correlations with all other measured parameters. In P. pumilio, the LW correlates significantly with SVL (r=0.94), head length (HL) (r=0.82), thigh length (THL) (r= 0.86), fore arm length (FLL) (r= 0.86), IOD (r=0.90), eye diameter (ED) (r=0.90) and tympanum diameter (TD) (r=0.90). The highest correlation coefficient (r=0.98) was found between the LW and SVL in H. occipitalis. These two parameters also had a high correlation coefficient (r=0.94) in P. pumilio. This study provides a preliminary data on the morphometrics of two edible frog species (Hoplobatrachus occipitalis and Ptychadena pumilio) in Ibadan, Nigeria. Molecular investigation of the species is recommended as it will further help in their management and conservation.
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    Internal and external morphometry of Thomas's rope squirrel (Funisciurusanerythrus) and Gambian Sun Squirrel (Heliosciurus Gambianus) In Ibadan, Nigeria
    (University of Nigeria, Nsukka, 2020) Coker, O. M.; Jubril, A. J.; Isong, O. M.; Omonona, A. O.
    Currently, no information exists regarding internal and external morphometrics and their correlations in Funisciurus anerythrus and Heliosciurus gambianus. Therefore, this study examined the relationships among the internal and external morphometrics of the two species in University of Ibadan, Ibadan, Nigeria. Samples of adult F. anerythrus (n = 20) and H. gambianus (n = 13) were trapped from the wild at various locations within the campus. Live weights (LW), external measurements and weights of internal organs were taken. Comparisons within and between both species were carried out using T-tests and Pearson's correlation coefficient at p<0.05. H. gambianus was significantly bigger than F. anerythrus for all the measured parameters, except in ear and snout lengths. Male F. anerythrus was significantly bigger than female in LW, body length (BL) and shoulder to tail length (STL) while, female H. gambianus was significantly bigger than male in trunk circumference (TC). In male F. anerythrus, BL significantly correlates with STL (r = 0.85). In female F. anerythrus, LW correlates significantly with hind limb length (r = 0.62) and both kidneys. In male H. gambianus, LW correlates significantly with head length (r = 0.79), tail length (r = 0.81), BL (r = 0.97), STL (r = 0.87), and the weights of lungs and kidneys. In female H. gambianus, LW correlates significantly with TC (r = 0.99) and right lung weight (r = 0.92). Both species show some levels of sexual dimorphism and substantial positive correlations among the external and internal measurements.
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    External and internal morphometry of the four-toed Hedgehog (Atelerix albiventris Wagner, 1841) in Ibadan, Nigeria
    (University of Nigeria, Nsukka, 2018) Coker, O. M.; Olukole, S. G.; Udje, O. A.
    Body size and measurements are important determinant of fitness in m any species. The four-toed hedgehog (Atelerix aibiventris) is the m ost preferred pet species of the hedgehogs and has been found in Africa to be eaten as bush m eat and hunted for fertility charms. This puts the animal at risk. The morphometries of the hedgehog genera has been carried out with little attention to the comparison between its external and internal body parts. This study is therefore aim ed a t determining the relationships among the external and internal morphometries of A. aibiventris in Ibadan, Oyo State, Nigeria. Twelve (12) adult individuals comprising of 5 males and 7 females were used in this study and were all gotten from the wild in Ibadan, Nigeria. Live weights, external body measurements and weights of some internal organs were measured. Means and standard deviations were calculated. The T-tests and Pearson's correlation coefficients were conducted at a0.o5. The snout length and the tail thickness in males were significantly greater than that of females. Live weights in male correlates significantly with the trunk circumference, while in females it correlates with trunk circumference, body length, lung weight and heart weight. Several significant correlations were established among both external and internal parameters measured. This study revealed a reduction in the size of Atelerix aibiventris when compared with the previous similar studies. Factors such as increased hunting and habitat destruction might have been responsible for this.