PATTERNS OF SEXUAL DIMORPHISM AND PHENETIC VARIETYAMONG THE POPULATIONS OF THE GOLDEN JACKAL (Canis aureus) IN BULGARIA: INSIGHTS FROM CRANIOMETRIC DATA

Марков, Георги; Kocheva, Maria; Gospodinova, Milena

doi:10.15679/bjwr.v4i1.49

Cited by 4 publications

(6 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The present analysis of the cranial sexual dimorphism in the European golden jackal (C. a. moreoticus) populations from the southeastern part of its European range has shown strong differentiation between sexes. This outcome corresponds with the previous studies on differences in size and shape of jackal skulls (Stoyanov 2012;Bošković 2015;Markov et al 2017;Porobić 2016;Rezić et al 2017). Present results confirm that any future analyses aiming to detect and assess the degree of craniometrical similarity and distinction in golden jackals in Europe should be carried out separately by sex.…”

Section: Discussionsupporting

confidence: 91%

“…The inter-population craniometric differentiation recorded in the individuals of the golden jackal inhabiting Bulgaria, Serbia and Hungary corresponds to the morphological difference revealed between the individuals of this species from two distant populations living in eastern Croatia and eastern Serbia (Bošković 2015). The degree of craniological similarity recorded among golden jackals inhabiting Eastern (southern and southwestern Bulgaria) and Western Balkans (Dalmatia, Croatia) was low (Kryśtufek & Tvrtkovic 1990;Markov et al 2017) and revealing the craniometric heterogeneity and differentiation of the populations from Balkan Peninsula.…”

Section: Discussionmentioning

confidence: 86%

“…Although the golden jackal is steadily spreading across Europe, until now the genetic variability has been studied well only at local or regional scale (Za-chos et al 2009;Suchentrunk et al 2013;Fabbri et al 2014), with exception of only one pan-European study (Rutkowski et al 2015). Studies on craniometric variability of golden jackal populations were carried out only within the relatively small territories on the Balkan Peninsula (Kryśtufek & Tvrtković 1990;Stoyanov 2012;Markov et al 2017;Porobić et al 2016;Rezić et al 2017).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Phenetic similarity of European golden jackal (Canis aureus moreoticus) populations from southeastern Europe based on craniometric data

et al. 2017

View full text Add to dashboard Cite

show abstract

Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Phenetic similarity of European golden jackal (Canis aureus moreoticus) populations from southeastern Europe based on craniometric data

et al. 2017

View full text Add to dashboard Cite

show abstract

“…However, most of their studied populations did not differ significantly in the canine diameter and skull length (Van Valkenburgh and Wayne 1994). In golden jackals, the overall dimorphism of skull size has been shown to be generally low and less pronounced compared to other canid species (Stoyanov 2012(Stoyanov , 2020Porobić et al 2016;Markov et al 2017;Raichev et al 2017). Multivariate analysis of skull size and shape failed to identify differences between males and females (Stoyanov 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Listed measurements, which were included in the analyses are shown in Fig.1*Measured at maximum breadth a von den Driesch (1976), bMarkov et al (2017),c Krystufek and Tvrtkovic (1990),d Van Valkenburgh and Wayne (1994) . rostral breadth over canines (RB) c 7. condylobasal length (CBL) a,b 8. palatal length (PL) a 9. mesiodistal diameter of upper canine tooth (C) d 10. mandibular length (infradentale to condylar process) (ML) a,b 11. coronoid height of mandible (MH) a…”

mentioning

confidence: 99%

The canine counts! Significance of a craniodental measure to describe sexual dimorphism in canids: Golden jackals (Canis aureus) and African wolves (Canis lupaster)

et al. 2021

View full text Add to dashboard Cite

Sexual dimorphism is a widespread phenomenon among mammals, including carnivorans. While sexual dimorphism in golden jackals (Canis aureus) has been analysed in the past, in the related and apparently convergent canid, the African wolf (Canis lupaster), it is poorly studied and showed to be relatively small. Previously, sexual size dimorphism (SSD) research in these species was mostly based on skull and body measurements. In our study, we also included dental measurements, namely the diameter of the canine. We used 11 measured sections of 104 adult specimens, comprising 61 golden jackal and 43 African wolf skulls. Data analyses were carried out through logistic regression and conditional inference trees (CIT). To compare the results of SSD to other species, sexual dimorphism indices (SDI) were calculated. Golden jackals and African wolves show significant sexual size dimorphism, both in cranial and dental size. The logistic regression revealed that the mesiodistal diameter of the upper canine is most effective in discerning the sexes. The difference in the calculated SDI of the canine diameter between the sexes amounted to 8.71 in golden jackals and 14.11 in African wolves, respectively—with regional diversity. Thus, the canine diameter is an important measure to investigate SSD as well as an easy tool to apply in the field.

show abstract

Sexual dimorphism in the Hungarian golden jackal population: analysing body and skull size and shape

Csányi,

Sándor

2024

Mamm Biol

View full text Add to dashboard Cite

Defining species within the Canidae family is challenging due to morphological convergence, behavioral plasticity, traditional taxonomic limitations, and possible hybridisation. This challenge is timely with the recent population and range expansion of the golden jackal (Canis aureus). Exploring their morphological data and sexual dimorphism is essential for identifying factors driving their success in new habitats. The proven hybridization of golden jackals with dogs and wolves may affect species description, population dynamics, and genetic diversity, impacting conservation strategies. This study, for the first time, conducts a morphometric analysis of golden jackals in Somogy County, Hungary, to prove sexual size dimorphism (SSD) in body and skull and sexual shape dimorphism (SShD) in skull across juvenile and adult age groups. 719 golden jackals (362 females and 357 males) were collected between January 2021 and January 2023. Descriptive statistics revealed significant SSD in body and skull measurements among both age groups, with males generally larger than females, particularly in body mass (11.72% in juveniles and 13.37% in adults). Most skull dimensions differed significantly between sexes and age groups, except for foramen magnum height, foramen magnum width, and postorbital breadth among juveniles and foramen magnum height and postorbital breadth among adults. We used principal component analyses (PCA) on raw dimension data and the log shape ratio method to extract shape information. Linear discriminant analysis (LDA) explored skull SShD between sexes. Notably, our study achieved over 71% accuracy in sex classification, illustrating the clear presence of SShD of the skull in golden jackals across both age groups. Our study provides a comprehensive database of golden jackals in the overpopulated Hungarian habitat, which will be helpful for further research on ecology, behavior, and conservation management.

show abstract

PATTERNS OF SEXUAL DIMORPHISM AND PHENETIC VARIETYAMONG THE POPULATIONS OF THE GOLDEN JACKAL (Canis aureus) IN BULGARIA: INSIGHTS FROM CRANIOMETRIC DATA

Cited by 4 publications

References 3 publications

Phenetic similarity of European golden jackal (Canis aureus moreoticus) populations from southeastern Europe based on craniometric data

Phenetic similarity of European golden jackal (Canis aureus moreoticus) populations from southeastern Europe based on craniometric data

The canine counts! Significance of a craniodental measure to describe sexual dimorphism in canids: Golden jackals (Canis aureus) and African wolves (Canis lupaster)

Sexual dimorphism in the Hungarian golden jackal population: analysing body and skull size and shape

Contact Info

Product

Resources

About