Antropoloji Bölümü

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    Article
    Citation - WoS: 5
    Citation - Scopus: 6
    Length estimation of Atlantic bluefin tuna (Thunnus thynnus) using vertebrae
    (Wiley, 2022) Andrews, Adam J.; Mylona, Dimitra; Rivera-Charún, Lucia; Winter, Rachel; Onar, Vedat; Sıddıq, Abu Bakar; Tinti, Fausto; Morales-Muniz, Arturo
    Atlantic bluefin tuna (Thunnus thynnus; BFT) is a large (up to 3.3 m in length) pelagic predator which has been exploited throughout the eastern Atlantic and Mediterranean since prehistoric times, as attested by its archeological remains. One key insight derivable from these remains is body size, which can indicate past fishing abilities, the impact of fishing, and past migration behavior. Despite this, there exists no reliable method to estimate the size of BFT found in archeological sites. Here, 13 modern Thunnus spp. skeletons were studied to provide power regression equations that estimate body length from vertebra dimensions. In modern specimens, the majority of BFT vertebrae can be differentiated by their morphological features, and thus, individual regression equations can be applied for each rank (position in vertebral column). In an archeological context, poor preservation may limit one's ability to identify rank; hence, “types” of vertebrae were defined, which enable length estimates when rank cannot be determined. At least one vertebra dimension, height, width, or length correlated highly with body length when vertebrae were ranked (R2 > 0.97) or identified to types (R2 > 0.98). Whether using rank or type, length estimates appear accurate to approximately ±10%. Finally, the method was applied to a sample of Roman-era BFT vertebrae to demonstrate its potential. It is acknowledged that further studies with larger sample sizes would provide more precision in BFT length estimates.
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    Citation - WoS: 1
    Citation - Scopus: 1
    Lower palatine developmental instability in hybrid Old World camelids
    (2020) Parés-Casanova, Pere M.; Sıddıq, Abu Bakar; Morilla-Gorgot, Cristina; Onar, Vedat
    Objective: In this research study, we explore the fluctuating asymmetry (FA) of palate Camelus hybrids and their parental species (dromedary and Bactrian). Materials and methods: We studied a sample of pictures from 27 adult skulls of pure Camelus dromedarius (n = 13), Camelus bactrianus (n = 7), and their crosses (n = 7), from two different collections. A set of 11 semilandmarks was located on the palatal region and was studied by means of geometric morphometric methods. The asymmetric variation was analyzed and evaluated for allometric effects, and variation among these three groups was studied using a canonical variates analysis. Results: Among hybrids, there appeared a significantly lower amount of FA in comparison to the parental species, which may reflect the lower levels of genetic stress and higher levels of directional asymmetry, which may suggest the presence of strongly transgressive mastication compared to pure species. Conclusion: Camel hybrids would present increased developmental stability and better adaptation over those of parenteral lines.