Geographical Variation of Mandible Size and Shape in the Ryukyu Wild Pig(Sus scrofa riukiuanus).

Endo, Hideki; Maeda, Seishi; Yamagiwa, Daishiro; Kurohmaru, Masamichi; Hayashi, Yoshihiro; Hattori, Satoshi; Kurosawa, Yaetsu; Tanaka, Kazue

doi:10.1292/jvms.60.57

Cited by 15 publications

(21 citation statements)

References 12 publications

(15 reference statements)

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“…This result is not consistent with the suggestions [22] that the dwarfism is confirmed in some island populations of Tragulus napu, and that the isolation effect is not obviously seen in Tragulus javanicus. From these results, we suggest that Tragulus javanicus becomes larger in islands like smaller rodents, whereas the Tragulus napu is smaller like other large artiodactyls [7,8,11,22].…”

Section: Discussionmentioning

confidence: 89%

Geographical Variation of the Skull of the Lesser Mouse Deer

Endo

Fukuta

Kimura

et al. 2004

The Journal of Veterinary Medical Science

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ABSTRACT. We examined the geographical variation of the skull size and shape of the lesser mouse deer (Tragulus javanicus) from Laos, Thailand, Peninsular Malaysia, Sumatra, Java, Borneo, Langkawi and some Islands of Tenasserim in Myanmar. Although the influence of the climatic condition on skull size was not confirmed in the mainland populations, the skull became rostro-caudally longer in the populations of Tenasserim and Sumatra because of island isolation effect. The skull size was classified into the following thre e clusters of localities from the matrix of Q-mode correlation coefficients: 1) Langkawi and Tenasserim, 2) Laos and Thailand, 3) Sumatra and Borneo. The skulls in the population of Java belong to the cluster of Langkawi and Tenasserim in male, however were morphologic ally similar to those in the cluster of Borneo and Sumatra. The canonical discriminant analysis pointed out that the Laos and Tenasserim populations were separated from the other ones and that the populations of Sumatra, Java and Borneo were intermingled each other.

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Section: Discussionmentioning

confidence: 89%

Geographical Variation of the Skull of the Lesser Mouse Deer

Endo

Fukuta

Kimura

et al. 2004

The Journal of Veterinary Medical Science

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“…A total of 24 parameters were measured on each skull. Some of the parameters measured were adapted from Endo et al (2002) and Olopade & Okandeji (2010). Measurements were determined with the aid of vernier callipers, centimetre rule, mathematical dividers and compass.…”

Section: Introductionmentioning

confidence: 99%

Rostrofacial Indices of the Nigerian Local Dog: Implications in Veterinary Oral and Maxillo-facial Anaesthesiology of the Dolichocephalic Canine Breed

Igado

2014

Int. J. Morphol.

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SUMMARY:There has been a recent increase in the use of trained dogs in animal-assisted therapy programmes. This morphological study uses the Nigerian local dog as a prototype dolichocephalic to determine rostrofacial parameters which are of clinical and anesthesiological importance in veterinary oral surgery and intervention. Sixteen Nigerian local dog skulls of both sexes (seven males and nine females) were used. The females were observed to have higher values for most of the parameters measured. Statistically significant difference (P<0.05) was only observed in one parameter, distance between the mandibular foramen and the caudal border of the mandible, with the female value being higher. The length of the mandible from the most rostral point of the dental bone to the most caudal projection of the coronoid process (MDL-1) showed a positive correlation to the parameters depicting height, width and length of the mandible. Results obtained from this study will find application in veterinary comparative anatomy and in clinical application in oral and maxillofacial surgery and anaesthesia, especially in regions where the dental x-ray is not readily available.

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“…This eyeball weight in this study was however slightly heavier than those obtained in the earlier study. This may be as a result of environmental factors as such disparity has been noticed in body structures of animals of the same breed living in different locations (Endo, et al, 2002).…”

Section: Discussionmentioning

confidence: 97%

Morphometric Study of the Eyeball of Three Breeds of Goats in Nigeria

et al. 2005

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SUMMARY:A comparative study of ocular morphometry was done in goats in Nigeria using the three major breeds. The result showed that the circumferences (mediolateral and anteriorposterior) were fairly constant between the breeds. The mean relative eyeball weight ranged from (0.39 -0.59) x 10-3. Asymmetry was observed between the right and left eyeball weights and circumferences in all breeds and there was disparity in the asymmetry. It was also observed that heavier eyeball weights did not always correspond to a wider circumference. Female WAD and RS goats had significantly heavier (p < 0.05) eyeball weights than the males but that was not the case in the Sahel breed. Animals above one year had consistently higher values in most of the parameters examined on the eye than those below the age group. The results are added information to baseline data on regional anatomy of the head of small ruminant breeds in Nigeria and for comparative ocular studies.

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Geographical Variation of Mandible Size and Shape in the Ryukyu Wild Pig(Sus scrofa riukiuanus).

Cited by 15 publications

References 12 publications

Geographical Variation of the Skull of the Lesser Mouse Deer

Geographical Variation of the Skull of the Lesser Mouse Deer

Rostrofacial Indices of the Nigerian Local Dog: Implications in Veterinary Oral and Maxillo-facial Anaesthesiology of the Dolichocephalic Canine Breed

Morphometric Study of the Eyeball of Three Breeds of Goats in Nigeria

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