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The gross anatomy of the male reproductive system of the European hedgehog (Erinaceus Europaeus)
Affiliations- Department of Basic Sciences, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran, Iran, Islamic Republic Of
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Abstract
Hedgehogs are small spiny-coated insectivores. Due to their low body weight, calm character, and easy maintenance, they are kept as pets. It is therefore worthwhile to care about hedgehogs’ health problems and to provide pet owners with information about their reproduction. Moreover, it is necessary to be familiar with their anatomy so as to satisfy the need to improve nutrition and medical care, even surgery. This study was carried out on five adult male European hedgehogs euthanased in a chloroform chamber. The European hedgehog’s oval testes are invisible in inguinal region because they have no true scrotal sac. The testes are located in the craniocaudal direction with dorsolateral epididymal attachments. The vesicular glands, the European hedgehog’s largest accessory sex glands, are lobulated structures containing dorsomedial and ventrolateral parts on each side. The prostate is an oval gland with right and left lobes. The paired bulbourethral glands are laid on the ischiocavernosus muscle. Histologically the vesicular, prostate gland ducts and ductus deferens as well as urethra separately were discharged in a diverticlum at the level of the pelvic urethra end. A sigmoid flexure exists in the proximal part of shaft body of the penis. There are two retractor penile muscles. In dorsal end of the penile glans, there is a small urethral process with two nail- -like, needle-shaped structures. They are on both sides of the urethral process. Furthermore, there are two intromittent sacs (Sacculus urethralis) in the ventral part of the end of the penis. (Folia Morphol 2018; 77, 1: 36–43)
Abstract
Hedgehogs are small spiny-coated insectivores. Due to their low body weight, calm character, and easy maintenance, they are kept as pets. It is therefore worthwhile to care about hedgehogs’ health problems and to provide pet owners with information about their reproduction. Moreover, it is necessary to be familiar with their anatomy so as to satisfy the need to improve nutrition and medical care, even surgery. This study was carried out on five adult male European hedgehogs euthanased in a chloroform chamber. The European hedgehog’s oval testes are invisible in inguinal region because they have no true scrotal sac. The testes are located in the craniocaudal direction with dorsolateral epididymal attachments. The vesicular glands, the European hedgehog’s largest accessory sex glands, are lobulated structures containing dorsomedial and ventrolateral parts on each side. The prostate is an oval gland with right and left lobes. The paired bulbourethral glands are laid on the ischiocavernosus muscle. Histologically the vesicular, prostate gland ducts and ductus deferens as well as urethra separately were discharged in a diverticlum at the level of the pelvic urethra end. A sigmoid flexure exists in the proximal part of shaft body of the penis. There are two retractor penile muscles. In dorsal end of the penile glans, there is a small urethral process with two nail- -like, needle-shaped structures. They are on both sides of the urethral process. Furthermore, there are two intromittent sacs (Sacculus urethralis) in the ventral part of the end of the penis. (Folia Morphol 2018; 77, 1: 36–43)
Keywords
European hedgehog, male, penis, urethra, accessory sex glands
About this articleTitle
The gross anatomy of the male reproductive system of the European hedgehog (Erinaceus Europaeus)
Journal
Issue
Article type
Original article
Pages
36-43
Published online
2017-06-14
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3809
Article views/downloads
6450
DOI
Pubmed
Bibliographic record
Folia Morphol 2018;77(1):36-43.
Keywords
European hedgehog
male
penis
urethra
accessory sex glands
Authors
G. Akbari
M. Babaei
D. Kianifard
D. Mohebi
References (25)- Adebayo AO, Akinloye AK, Olukole SG, et al. Gross, histological and ultrastructural features of the bulbourethral gland in the greater cane rat (Thryonomys swinderianus). Anat Histol Embryol. 2015; 44(1): 59–65.
- Akbari G, Gilanpour H, Adibmoradi M. Anatomy of male squirrel (Sciurus anomalus ) reproductive organs. Onl J Vet Res. 2016; 20(7 ): 453–464.
- Akbari G, Adibmoradi M, Gilanpour H, et al. Anatomical and histological study of penis in Persian squirrel (Sciurus anomalus ) . J Vet Res. 2014; 69(4 ): 401–409.
- Atalar O, Ceribasi AO. The morphology of the penis in porcupine (Hystrix cristata) . Vet Med (Praha). 2006; 51(2 ): 66–70.
- Bedford JM, Mock OB, Nagdas SK, et al. Reproductive features of the eastern mole (Scalopus aquaticus) and star-nose mole (Condylura cristata). J Reprod Fertil. 1999; 117(2): 345–353.
- Blottner S, Faber D, Roelants H. Studies on the European hare. 56. Seasonal variation of testicular activity in European brown hare Lepus europaeus. Acta Theriol. 2000; 45: 385–394.
- Borges EM, Branco É, de Lima AR, et al. Morphology of accessory genital glands of spotted paca (Agouti paca Linnaeus, 1766). Anim Reprod Sci. 2014; 145(1-2): 75–80.
- Brodowski AK, Jegenow K, Pielowski Z, et al. Seasonal changes in histological – morphometric parameters of testes in the European brown hare. Zeitschrift Jagdwiss. 2001; 47(1): 26–33.
- Cooper G, Schiller AL. Anotomy of the Guinea Pig. Harvard University Press, Cambridge, MA, 1975.
- Eadie W. A comparative study of the male accessory genital glands of neurotrichus. J Mammal. 1951; 32(1): 36.
- Godet R. Morphogenese comparee des voies genitales males chez les Insectivores Lipotyphla. Ann Sei nat (Zool). 1951; 13: 277–289.
- Gray H. Anatomy of the human body. Lea and Febiger 1918.
- Hebel R, Stromberg MV. Anatomy and Embriology of the Laboratory Rat. BioMed Verlag, Wörthesee. 1986.
- Kowalska-Dyrcz A. A comparative study of the male genital tract in some species of shrews. Acta Theriol. 1966; 11: 71-127, plates 5–12.
- Layne J. The glans penis and baculum of the rodent dactylomys dactylinus desmarest. Mammalia. 1960; 24(1): 87–92.
- Mann T. Male accessory organs of reproduction, and their secretory product: the seminal plasma. In: Mann T (ed. ) . The biochemistry of semen and of the male reproductive tract. Methuen, London, United Kingdom. 1964: 37–78.
- Menezes D, Neto AA, Oliveira M, et al. Morphology of the male agouti accessory genital glands (Dasyprocta prymnolopha Wagler, 1831). Pesqui Vet Bras. 2010; 30(9): 793–797.
- Mollineau W, Adogwa A, Jasper N, et al. The gross anatomy of the male reproductive system of a neotropical rodent: the agouti (Dasyprota leporina). Anat Histol Embryol. 2006; 35(1): 47–52.
- Newman J, Hicks RM. Surface ultrastructure of the epithelia lining the normal human lower urinary tract. Br J Exp Pathol. 1981; 62(3): 232–251.
- Parr MB, Ren HP, Russell LD, et al. Urethral glands of the male mouse contain secretory component and immunoglobulin A plasma cells and are targets of testosterone. Biol Reprod. 1992; 47(6): 1031–1039.
- Sinclair AW, Glickman SE, Baskin L, et al. Anatomy of mole external genitalia: Setting the record straight. Anat Rec (Hoboken). 2016; 299(3): 385–399.
- Stan F. Anatomical Particularities of Male Reproductive System of Guinea Pigs (Cavia porcellus). Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Vet Med. 2015; 72(2): 288–295.
- Treuting PM, Dintzis SM. Comparative Anatomy and Histology: A Mouse and Human Atlas. In: Knoblahgh S, True L (eds. ) . Male Reproductive System. Elsevier Science, Burlington 2011: 285–309.
- Walker EP. Mammals of the World, vol. 1. Baltimore, Johns Hopkins Press. 1964: 125–133.
- Woodall P. The male reproductive system and the phylogeny of elephant-shrews (Macroscelidea). Mammal Rev. 1995; 25(1-2): 87–93.
