A morphometric model to predict the sex of virginia rails (<i>Rallus limicola</i>)

Fournier, Auriel M. V.; Sheildcastle, Mark C.; Fries, Anthony C; Bump, Joseph K.

doi:10.1002/wsb.323

Cited by 6 publications

(7 citation statements)

References 21 publications

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“…Other than that, the cloaca is a gender consideration. According to [11], the morphometric method has a low level of confidence if it is not supported by other data, especially when applied to monomorphic birds. This study aimed to confirm the results of the morphometrics measurements for sex determination with molecular sexing detection.…”

Section: Introductionmentioning

confidence: 99%

DNA sexing for gender determination of Changeable Hawk-Eagle (Nisaetus cirrhatus, Gmelin, 1788)

2021

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The Changeable hawk-eagle (Brontok eagle) is a protected bird species. It is one of the most frequently hunted and traded birds in Indonesia. The processes of being traded changes this bird natural behaviour. Therefore, a rehabilitation effort to return the eagle’s behaviour to conform to its natural habits is needed. The ultimate goal of rehabilitation is to release the changeable hawk-eagle back into its natural habitat. In conservation and breeding programs, efforts to determine the sex of eagles to be released are very important to help increase the population of changeable hawk-eagles in their habitat by looking at the sex ratio. At the present, sex determination at the Kamojang Conservation Eagle Center (Pusat Konservasi Elang Kamojang or PKEK) uses the morphometric method. This research used the DNA sexing method with primers 2550F and 2718R to determine the sex of Changeable hawk-eagles in PKEK by extracting DNA from blood samples of 30 eagles. Comparison of DNA sexing results and morphometric data showed differences. This proves that DNA sexing, is suitable in determining changeable hawk-eagles’ sex.

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Section: Introductionmentioning

confidence: 99%

DNA sexing for gender determination of Changeable Hawk-Eagle (Nisaetus cirrhatus, Gmelin, 1788)

2021

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“…The accuracy of this morphometric sexing model is promising given the predictive power we found for both the training and validation data sets (Fournier et al ). Additionally, because of the manner in which bill depth is measured, there was less probability of variation among investigators.…”

Section: Discussionmentioning

confidence: 67%

A morphometric sex determination model for adult greater roadrunners (Geococcyx californianus)

et al. 2014

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Little is known of the greater roadrunner's (Geococcyx californianus; roadrunner) ecology and many demographic questions are difficult to answer because of our inability to determine adult bird sex in the field. We collected measurements from live-captured roadrunners of known sex in Fisher County, Texas, USA, and from roadrunner specimens from museums and university biological collections from 2003 to 2012 to develop a predictive logistic regression model for adult sex determination. We measured 433 adult birds of which 80% (n ¼ 346) were randomly chosen to build potential models. Our best model included the variable estimate bill depth, which was found to be larger in males and correctly classified 80% of the birds. We validated the model with the remaining 20% of measurements (n ¼ 87) and correctly identified the sex of 85% of the birds. Because this model incorporated roadrunners from across their range, it provides an easy, inexpensive, accurate, and field-relevant methodology for sex determination of adult roadrunners at the point of capture. Ó 2014 The Wildlife Society.

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“…Morphometric analysis method has several advantages, including can be applied to adult birds, fast, cheap and can be applied outside the breeding season. The morphometric method has been used for relatively small numbers of samples (Fournier et al, 2013). The parameters measured in this method include body length, upper bill length, lower bill length, wing length, tail length, femur length, tibial-tarsus length, tarsometatarsus length, length of the digits, body weight, number of primary and secondary flight feathers on the border.…”

Section: Methodsmentioning

confidence: 99%

Sex Determination in Male and Female Melopsittacus undulates using a Morphometric Method

2018

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Parakeets (Melopsittacus undulates) are classified parrot order Psittaciformes. Parakeets are monomorphic birds whose sex is difficult to be distinguished. Sex identification is very important for breeding efforts in order to increase the parakeet population. External morphology was determined to identify the sex of the birds. This research was conducted to determine the sex of parakeets (male and female). This study used five male and five female parakeets aged 4 months as the study objects. This study used the quantitative and qualitative method. Results of this study was verified by performing surgery to determine the sex of parakeet based on their reproductive organs. The t-test results of morphometric characteristics showed no significant different in the length of body, upper bill, lower bill, wing, tail, femur, tibial-tarsus, tarsometatarsus and digits as well as the body weight between male and female parakeets. The color of the cere was useful to accurately determine sex in parakeets (blue in males and white in females). This research provided information to the public about the differences between male and female parakeets for the selection of good broodstock in order to increase their population in captivity.

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A morphometric model to predict the sex of virginia rails (Rallus limicola)

Cited by 6 publications

References 21 publications

DNA sexing for gender determination of Changeable Hawk-Eagle (Nisaetus cirrhatus, Gmelin, 1788)

DNA sexing for gender determination of Changeable Hawk-Eagle (Nisaetus cirrhatus, Gmelin, 1788)

A morphometric sex determination model for adult greater roadrunners (Geococcyx californianus)

Sex Determination in Male and Female Melopsittacus undulates using a Morphometric Method

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