Sex Determination of Adult Eurasian Coots (<i>Fulica atra</i>) by Morphometric Measurements

Minias, Piotr

doi:10.1675/063.038.0208

Cited by 10 publications

(16 citation statements)

References 13 publications

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“…It is therefore preferable to use zoometric measurements of live weight and body length since high values of these traits suggest strongly that the birds are female even though they do not give absolute certainty. In line with other studies on different poultry species (Oguntunji and Ayorinde, 2014;Minias, 2015) this study suggests that sex discrimination in poultry through zoometric measurements may be a viable alternative to examining the protrusion at the edge of the dorsal cloaca in quail.…”

Section: Discussionsupporting

confidence: 88%

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Sex Determination of Japanese Quails (Coturnix Coturnix Japonica) using with Zoometric Measurements

Rathert

Güven

Üçkardeş

2017

Turkish JAF Sci.Tech.

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The difficulty of sex determination in most poultry species causes significant financial losses for poultry production as birds cannot be separated at early stages of growth for meat or egg production. Therefore it is important to determine bird's sex with zoometric parameters. This study was carried out to determine the sex of Japanese quails with zoometric measurements, such as live weight, body length, chest depth and chest width. Eighty-eight male and female Japanese quail chicks were used individually for live weight, chest depth (mm), chest width (mm) and body length (mm) with using digital scaled balance and caliper for every week over a period of six weeks. The weekly collected data were applied to t test for estimating the sex discrimination. The Pearson's correlation was applied for examining the interrelationship between sex and biometric traits. The results indicated that there was a significant positive correlation between live weight and body length beginning with the 2 nd week. Therefore, zoometric measurement of these body traits is suitable for discriminating the sex of Japanese quails in early phase of life.

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Section: Discussionsupporting

confidence: 88%

“…Zoometric measurement as a tool in sex discrimination has been examined in, for instance, mockingbirds (Fuchs and Montalti, 2016), owls (Tornberg et al, 2016), coots (Minias, 2015), Muscovy ducks (Oguntunji and Ayorinde, 2014) showing rather inconclusive results concerning predictability in terms of species and measurements traits.…”

Section: Introductionmentioning

confidence: 99%

Sex Determination of Japanese Quails (Coturnix Coturnix Japonica) using with Zoometric Measurements

Rathert

Güven

Üçkardeş

2017

Turkish JAF Sci.Tech.

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“…As indicated by earlier studies on the same population, probability of hatching at least one chick by suburban coots was ca. 30% lower in comparison with pairs nesting in more urbanized areas, probably due to differences in the predatory pressure (Minias ). Data from other Central European coot populations also indicated relaxation of predation pressure in urban environments; for example, coots from Mazurian Lakes, NE Poland, had predation‐related brood losses reduced by approximately 60% while nesting in built‐up areas (Brzeziński et al.…”

Section: Discussionmentioning

confidence: 95%

“…Amplification of the chromo‐helicase‐DNA‐binding (CHD) region was performed with the primer pair P2 and P8 (Griffiths et al. ) using PCR conditions presented by Minias (). The PCR products were separated on 2% agarose gel until the differences in the product size were clearly visible.…”

Section: Methodsmentioning

confidence: 99%

“…Nuclear DNA from blood samples was extracted with the Thermo Scientific Genomic DNA Purification Kit (Thermo Fisher Scientific) according to the kit protocol. Amplification of the chromo-helicase-DNA-binding (CHD) region was performed with the primer pair P2 and P8 (Griffiths et al 1998) using PCR conditions presented by Minias (2015b). The PCR products were separated on 2% agarose gel until the differences in the product size were clearly visible.…”

Section: Physiological Stressmentioning

confidence: 99%

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Successful Colonization of a Novel Urban Environment is Associated with an Urban Behavioural Syndrome in a Reed‐Nesting Waterbird

Minias

2015

Ethology

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Urbanization is currently considered one of the most rapid types of global environmental change. More and more wildlife species are subject to increasing anthropogenic disturbance, but only some of them adapt to become successful urban exploiters. Although a number of fixed life history characteristics may enhance population persistence in an urbanized landscape, behavioural traits are thought to be critical for colonization of a novel urban environment. Within the class of birds, behavioural responses to urban environment have been assessed mostly for passerine species. Here, I examined behavioural alterations in a recently founded urban population of a reed‐nesting rallid species, the Eurasian coot Fulica atra. I found that urban coots adapted to nest in anthropogenically transformed littoral zones with scarce or no emergent vegetation, which precluded efficient nest concealment. Despite this, urban individuals spent, on average, less time incubating due to more frequent bouts off the nest than suburban conspecifics. This pattern was likely possible due to the relaxation of predation pressure in the colonized urban environment. Urban birds were also more aggressive, approached a human intruder at the nest more closely and were more likely to actively defend their nests. Finally, they had a reduced level of physiological stress (as measured with heterophil/lymphocyte ratio) when compared with suburban individuals. In conclusion, the behaviour of coots from the recently founded urban population was consistent with behavioural syndromes found in typical urban exploiters. The results support the central role of behavioural adaptation in successful colonization of novel environments by wildlife.

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Development of urban behaviour is associated with time since urbanization in a reed-nesting waterbird

2018

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Behavioural adaptations are recognized as crucial determinants for successful establishment and persistence of animal populations in a novel urban environment. Here, we examined mechanisms responsible for the development of urban behavioural type in a common waterbird, the Eurasian coot Fulica atra. We compared the behaviour of coots from a rural population and two urban populations that differed in the timing of colonization event (1960s vs. 2000s). We found that some behavioural characters associated with urban life (aggression during nest defence and boldness towards humans during foraging) were more strongly expressed in the older urban population when compared with the recently established urban population. By contrast, coots from the two urban populations showed a similar likelihood of exploiting human-derived food resources, as well as they showed similar levels of physiological stress. Urban coots were generally more aggressive, bolder, and less stressed than their rural conspecifics. Large behavioural and physiological divergence of coots from the recently established urban population and their rural conspecifics suggested that phenotypic plasticity and phenotype sorting may play a key role in the initial stages of urban colonization. On the other hand, increasing expression of boldness and aggression with the time since urbanization may suggest the role of microevolutionary adaptation in response to novel selective forces associated with the urban environment. Our results indicate that a combination of different processes (phenotypic plasticity, phenotype sorting, and microevolution) can determine successful colonization of urban areas by the Eurasian coots, and possibly other bird species.

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Sex Determination of Adult Eurasian Coots (Fulica atra) by Morphometric Measurements

Cited by 10 publications

References 13 publications

Sex Determination of Japanese Quails (Coturnix Coturnix Japonica) using with Zoometric Measurements

Sex Determination of Japanese Quails (Coturnix Coturnix Japonica) using with Zoometric Measurements

Successful Colonization of a Novel Urban Environment is Associated with an Urban Behavioural Syndrome in a Reed‐Nesting Waterbird

Development of urban behaviour is associated with time since urbanization in a reed-nesting waterbird

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