scholarly journals Vocal tract allometry in a mammalian vocal learner

2021 ◽  
Author(s):  
Koen de Reus ◽  
Daryll Carlson ◽  
Alice Lowry ◽  
Stephanie Gross ◽  
Maxime Garcia ◽  
...  
Keyword(s):  
Body Weight ◽  
Body Size ◽  
Body Length ◽  
Vocal Fold ◽  
Neural Control ◽  
Vocal Tract ◽  
Vocal Learning ◽  
Sexually Dimorphic ◽  
Clear Cut ◽  
Anatomical Adaptations

Acoustic allometry occurs when features of animal vocalisations can be predicted from body size measurements. Despite this being considered the norm, allometry sometimes breaks, resulting in species sounding smaller or larger than expected. A recent hypothesis suggests that allometry-breaking animals cluster into two groups: those with anatomical adaptations to their vocal tracts and those capable of learning new sounds (vocal learners). Here we test this hypothesis by probing vocal tract allometry in a proven mammalian vocal learner, the harbour seal (Phoca vitulina). We test whether vocal tract structures and body size scale allometrically in 68 individuals. We find that both body length and body weight accurately predict vocal tract length and one tracheal dimension. Independently, body length predicts vocal fold length while body weight predicts a second tracheal dimension. All vocal tract measures are larger in weaners than in pups and some structures are sexually dimorphic within age classes. We conclude that harbour seals do comply with allometric constraints, lending support to our hypothesis. However, allometry between body size and vocal fold length seems to emerge after puppyhood, suggesting that ontogeny may modulate the anatomy-learning distinction previously hypothesised as clear-cut. Species capable of producing non-allometric signals while their vocal tract scales allometrically, like seals, may then use non-morphological allometry-breaking mechanisms. We suggest that seals, and potentially other vocal learning mammals, may achieve allometry-breaking through developed neural control over their vocal organs.

scholarly journals Morphometry of Asian House Shrew (Suncus murinus) in Jahangirnagar University Campus

2016 ◽  
Vol 43 (2) ◽  
pp. 313-319
Author(s):  
Shamia Farhana Shoma ◽  
Mohammed Mostafa Feeroz ◽  
Md Kamrul Hasan
Keyword(s):  
Body Weight ◽  
Body Length ◽  
Morphometric Analysis ◽  
Tail Length ◽  
The Body ◽  
Sexually Dimorphic ◽  
University Campus ◽  
Suncus Murinus ◽  
House Shrew

A study was conducted on morphometry of Asian House Shrew, Suncus murinus at Jahangirnagar University campus, Savar, Dhaka from December, 2010 to November, 2011. A total of 85 shrews (55 males and 30 females) were studied for morphometric analysis. The body length of shrews varied from 13cm to 18 cm (mean 15.36, sd±1.17). Males were significantly differed from females in size which made them sexually dimorphic (t = 10.02, df = 83, p< 0.005). The body length of males ranged from 14.5 cm to 18 cm (mean = 16, sd±0.82) and in females it ranged from 13 cm to 15.5 cm (mean = 14.19, sd±0.74). The body weight of shrews varied from 45 gm to 138 gm (mean = 85.52, sd±25.6). The weight of males ranged from 65 gm to 138 gm (mean = 99.6, sd±20.03) whereas the body weight of females ranged from 45 gm to 82 gm (mean = 59.73, sd±10.54). Body length was positively correlated to the body weight (r = 0.917) as well as tail length (r = 0.673) and limbs length (forelimb length, r = 0.875 and hindlimb length, r = 0.971) and found to be significant at 1% level of significance.Bangladesh J. Zool. 43(2): 313-319, 2015

scholarly journals ANALISIS KORELASI DAN REGRESI ANTARA UKURAN-UKURAN TUBUH DENGAN BOBOT BADAN SAPI BRAHMAN CROSS (BX) BETINA DI KPT MAJU SEJAHTERA DESA TRIMULYO, KECAMATAN TANJUNG BINTANG, KABUPATEN LAMPUNG SELATAN

2021 ◽  
Vol 5 (2) ◽  
pp. 99-104
Author(s):  
Obet Yanto ◽  
Muhammad Dima Iqbal Hamdani ◽  
Dian Kurniawati ◽  
Sulastri Sulastri
Keyword(s):  
Body Weight ◽  
Regression Analysis ◽  
Body Size ◽  
Multiple Regression Analysis ◽  
Body Length ◽  
Positive Relationship ◽  
Regression Equation ◽  
Body Measurements ◽  
Body Measurement ◽  
The Relationship

This study aimed to determine the Correlation and the regression equation between body measurements and body weight of Brahman Cross (BX) Cow in KPT Maju Sejahtera Trimulyo village, Tanjung Bintang District, Lampung Selatan Regency. This research was conducted in July 2020. The data obtained were analyzed using simple and multiple regression analysis using the help of the Excel program. The material used in this study were 32 Brahman Cross (BX) Cow aged 2-3 years. The results of this study indicated that the average of Body Weight (BW), Chest Circumference (CC), Body Length (BL), and Shoulder height (SH) were 472.66 � 53.59 kg, 179.95 � 7, 95 cm, 132.49 � 6.39 cm, 127.95 � 3.08 cm, respectively. The correlation value between CC, BL, SH with BB were 0.764, 0.448, and 0.551, respectively. These results indicated that CC, BL, SH, have a positive relationship with BW. The regression equation resulting from the relationship between body weight and body size CC, BL, SH to BW with the value of determination (R2) and significance (P?0.05) was 0.607 (60.7%) with the regression equation BW = -674.003 + 4.314 CC + 1.247 BL + 1.602 SH. Keywords: Brahman Cross, Body Measurement, Correlation and Regression

scholarly journals Hubungan Ukuran-Ukuran Tubuh Terhadap Bobot Badan Sapi Simmental Peranakan Ongole Jantan Pada Berbagai Kelompok Umur di Rumah Pemotongan Hewan Sapi Jagalan Surakarta

2017 ◽  
Vol 15 (1) ◽  
pp. 16
Author(s):  
Sofie Suliani ◽  
Ahmad Pramono ◽  
Joko Riyanto ◽  
Sigit Prastowo
Keyword(s):  
Body Weight ◽  
Body Size ◽  
Body Length ◽  
Strong Correlation ◽  
Chest Circumference ◽  
Carcass Weight ◽  
Dental Anatomy ◽  
Group 3 ◽  
R Value ◽  
Group 2

<p><em>This study aim to know the relationship between body size, body weight and carcass weight of male Simmental Ongole crossbred at various age. The study was conducted in Jagalan abattoir in Surakarta for 2 months from December 2016 untill Januari 2016. Ninety heads of male Simmental Ongole crossbred were grouped into 3 groups (each 30 heads) that are Group 1 (1,5-2 years old), Group 2 (2-3 years old) and Group 3 (3-3,5 years old) according to dental anatomy observation at the incisivus replacement. Body length and chest circumference were respectively observed then correlated with body weight and carcass weight. Result shows a strong correlation between body weight and carcass weight by r value 0.931. The correlation between body length with body weight, chest circumference with body weight of Group1, Group 2 and Group 3 also shows in similiar pattern, with r value 0.647, 0.787, 0.666, and 0.661, 0.851, 0.661 respectively. A strong correlation also expressed between body length with carcass weight and chest circumference with carcass weight in each of groups as shown by r value 0.638, 0.740, 0.551 and 0.572, 0.803, 0.603 respectively. It is conculded that body size, body weight and carcass weight of male Simmental Ongole crossbreed have strong correlation among others.</em></p>

scholarly journals PENGUKURAN PANJANG TUBUH CACING NIPAH PENDEK Namalycastis abiuma (POLYCHAETA: NEREDIDAE) DARI PERAIRAN MANGROVE SUNGAI KAPUAS KALIMANTAN BARAT

2018 ◽  
Vol 11 (2) ◽  
pp. 183-189
Author(s):  
Junardi Junardi
Keyword(s):  
Body Weight ◽  
Body Size ◽  
Body Length ◽  
Anterior Segment ◽  
Total Body Length ◽  
The Body ◽  
Female Body Size ◽  
Alternative Approach ◽  
Total Body ◽  
The Relationship

AbstrakCacing Nipah Pendek Namalycastis abiuma memiliki tubuh yang elastis dan mudah putus sehingga diperlukan pendekatan morfometri tubuh lain untuk menentukan panjang tubuh sesungguhnya. Tujuan penelitian ini untuk menentukan panjang tubuh total cacing nipah pendek dengan menggunakan bobot tubuh, jumlah total segmen berseta, panjang tiga segmen anterior pertama (L3) dan lebar segmen berseta atau setiger ke-10 (S-10). Spesimen yang digunakan dipilih hanya individu yang lengkap dan utuh. Pengukuran dilakukan dibawah mikroskop dengan lensa okular yang dilengkapi dengan mikrometer. Data dianalisis dengan analisis korelasi. Cacing yang digunakan sebanyak 258 individu yang terdiri atas 190 immature, 54 submature dan 14 mature dengan ukuran panjang tubuh rata-rata berturut-turut 108,62±34,80 mm, 172,27±42,78 mm dan 123,14±57,40 mm. Cacing betina ditemukan memiliki ukuran tubuh lebih besar dari jantan. Panjang tubuh N. abiuma dapat diduga dengan bobot tubuh, panjang L3 dan lebar S-10 dengan nilai koefisien korelasi (r) berturut-turut 0,82, 0,73 dan 0,78. Pendekatan morfometri dapat digunakan untuk menentukan ukuran tubuh N. abiuma.Abstract The short nypa palm worm Namalycastis abiuma has an elastic and fragile body. Therefore, an alternative approach of morphometrical techniques is needed to determine the total body length. This research aimed to estimate the total body length of the short nypa palm worm based on body weight, the total number of segments, the length of the first three anterior segment (L3) and the tenth setiger width (S10). Body measurement was done using stereomicroscope fitted with the micrometer. Correlation analysis was done to describe the relationship between the length of L3 and the width of S10. A total of 258 complete and whole specimens consisted of 190 immature, 54 submature, and 14 mature individuals. The average body length of immature individuals was 108.62±34.80 mm, 172.27±42.78 mm for sub mature individuals, and 123.14±57.40 mm for mature individuals. Based on sexual dimorphism, the female body size is larger than male. The body length of N. abiuma can be estimated by body weight, the length of L3, and the  width of S10, with  correlation coefficient (r) of 0.82, 0.73 and 0.78, respectively. Morphometry approach can be used to determine the body size of N. abiuma. 

scholarly journals Korelasi Ukuran Tubuh terhadap Bobot Badan Sapi Aceh Umur Sapih dan Umur Satu Tahun

2018 ◽  
Vol 18 (2) ◽  
pp. 117-122
Author(s):  
Ikhsanuddin Ikhsanuddin ◽  
Veronica Margareta Ani Nurgiartiningsih ◽  
Kuswati Kuswati ◽  
Zainuddin Zainuddin
Keyword(s):  
Body Weight ◽  
Body Size ◽  
Regression Model ◽  
Body Length ◽  
Regression Equation ◽  
The Body ◽  
Chest Circumference ◽  
Weaning Weight ◽  
Weaning Age

ABSTRAK. Penelitian ini bertujuan untuk menghitung nilai korelasi antara bobot badan dengan ukuran tubuh serta mengestimasi bobot badan (BB) berdasarkan ukuran tubuh. Materi penelitian ini adalah 159 ekor sapi Aceh umur sapih dan umur satu tahun. Metode penelitian adalah studi kasus berdasarkan data bobot sapih dan bobot satu tahun beserta ukuran tubuh sapi Aceh. Hasil penelitian pada sapi Aceh umur sapih menunjukkan korelasi bobot badan dengan lingkar dada, panjang badan, dan tinggi pundak berturut-turut 0.65, 0,56 dan 0,64, sedangkan nilai determinasinya adalah 0,42, 0,30 dan 0,41. Model regresi untuk estimasi bobot badan umur sapih yaitu BB= -30,23 + 0,47LD + 0,13PB + 0,50TP. Untuk sapi Aceh umur satu tahun nilai korelasi bobot badan dengan lingkar dada, panjang badan, dan tinggi pundak berturut-turut 0.69, 0,58 dan 0,55, nilai determinasinya adalah 0,47, 0,34 dan 0,30. Persamaan garis regresi untuk sapi Aceh umur satu tahun yaitu BB = -44,96 + 0,72LD + 0,46PB + 0,24TP. Berdasarkan hasil analisis korelasi menunjukkan bahwa korelasi lingkar dada dengan bobot badan memiliki hubungan paling kuat dibandingkan dengan panjang badan dan tinggi pundak.  (Correlation between body size and body weight of Aceh Cattle at weaning and yearling age) ABSTRACT. This study aimed to evaluate the correlation between body weight and body size, as well to estimate body weight based on body size. A total of 159 Aceh cattle at weaning and yearling age were used in this study. The method used was a case study based on the data on weaning weight, yearling weight, and body size of Aceh cattle. The results showed that at the weaning age, the correlation values between body weight (BW) with chest circumference (CC), body length (BL), and shoulder height (SH) were 0.65, 0.56, and 0.64, respectively, while the determinant values were 0.42, 0.30, and 0.41, respectively. Regression model for estimating body weight at weaning age was BW = -30.23 + 0.47CC + 0.13BL + 0.50SH. At the yearling age, the correlation values of body weight with chest circumference, body length, and shoulder height were 0.69, 0.58, and 0.55, respectively, while the determinant values were 0.47, 0.34, and 0.30, respectively. The regression equation for yearling Aceh cattle was BW = -44.96 + 0.72CC + 0.46BL + 0.24SH. This study showed that the highest correlation was observed on the body weight with chest circumference compared to those with either body length or shoulder height.

scholarly journals Penampilan Produksi Sapi Aceh Umur Satu Hari, Umur Sapih, dan Umur Satu Tahun

2018 ◽  
Vol 5 (2) ◽  
pp. 67
Author(s):  
Ikhsanuddin Ikhsanuddin ◽  
V.M. Ani Nurgiartiningsih ◽  
Kuswati Kuswati ◽  
Mukhtar Mukhtar
Keyword(s):  
Body Weight ◽  
Body Size ◽  
Birth Weight ◽  
Body Length ◽  
Chest Circumference ◽  
Productive Performance ◽  
Weaning Weight ◽  
Breeding Center ◽  
Cattle Performance

ABSTRAKPenelitian ini bertujuan untuk mengetahui penampilan produksi sapi aceh di BPTU-HPT Indrapuri Aceh. Materi penelitian yaitu sapi aceh umur satu hari, umur sapih, dan umur satu tahun sebanyak 159 ekor. Metode penelitian adalah studi kasus berdasarkan data bobot lahir, bobot sapih, bobot satu tahun beserta ukuran tubuhnya. Data dianalisis menunjukkan bahwa sapi jantan memiliki bobot lahir 13,66±1,08 kg, bobot umur 205 hari 71,60±7,92 kg dan bobot  umur 365 hari 104,66±11,72 kg.  Sapi betina memiliki bobot lahir 13,88±1,32 kg, bobot umur 205 hari 64,38 ± 10,36 kg dan bobot umur 365 hari 90,29±11,95 kg. Sapi Aceh umur satu hari memiliki lingkar dada, panjang badan dan tinggi pundak berturut-turut  55,41 cm, 46,16 cm  dan 55,22 cm pada sapi jantan serta 55,87 cm, 46,83 cm, dan 55,74 cm pada sapi betina. Sapi aceh umur 365 hari memiliki ukuran lingkar dada, panjang badan dan tinggi pundak berturut-turut 114,32 cm, 94,31 cm dan 92,93 cm pada sapi jantan serta 104,25 cm, 85,06 dan 87,71 cm pada sapi betina. Rata-rata penampilan produksi sapi aceh di BPTU Indrapuri  berpotensi menjadi ternak unggul berdasarkan kriteria SNI.Kata Kunci: sapi aceh, penampilan produksi, bobot badan, ukuran tubuhABSTRACTThis study aimed to evaluate the productive performance of aceh cattle at Indrapuri Breeding Center for Superior Livestock and Forage. A total of 159 heads of aceh cattle were used in this study. The method used was a case study based on the data of birth weight, weaning weight, yearling weight, and body size. The results showed that the birth weight, weaning weight at 205 days of age, and yearling weight at 365 days of age of male aceh cattle were 13.66±1.08 kg, 71.60±7.92 kg, and 104.66±11.72 kg, respectively. Whereas, female aceh cattle had the birth weight, weaning weight at 205 days of age, and yearling weight at 365 days of age of 13.88±1.32 kg, 64.38±10.36 kg, and 90.29±11.95 kg, respectively. At birth, male Aceh cattle had the chest circumference, body length, and shoulder height of 55.41 cm, 46.16 cm, and 55.22 cm, respectively, while female aceh cattle were 55.87 cm, 46.83 cm, and 55.74 cm, respectively. At 365 days of age, male aceh cattle had the chest circumference, body length, and shoulder height of 114.32 cm, 94.31 cm, and 92.93 cm, respectively, while female aceh cattle were 104.25 cm, 85.06 cm, and 87.71 cm, respectively. The average productive performance of aceh cattle at Indrapuri Breeding Center for Superior Livestock and Forage has the potential to become superior cattle based on the criteria of Indonesian National Standard.Keywords: aceh cattle, performance, body weight, body size

scholarly journals CHARAKTERISTICS OF BALI CATTLE YOUNG BULL UNDER TRADITIONALLY LIVESTOCK SYSTEM IN MERBAUN VILLAGE REGENCY OF KUPANG

2017 ◽  
Vol 3 (1) ◽  
pp. 11
Author(s):  
Abdullah Baharun ◽  
Henderiana L. L Belli ◽  
Thomas M Hine
Keyword(s):  
Body Weight ◽  
Body Size ◽  
Body Length ◽  
Sperm Concentration ◽  
The Other ◽  
Young Bull ◽  
Brown Colour ◽  
Chest Girth ◽  
Bali Cattle ◽  
Livestock System

An experiment had been conducted in Merbaun Village, Regency of Kupang for three months. The objective of the experiment was to know characteristics of Bali cattle Bull i.e. age and body weight, body score condition, linier body size (e.g. chest girth, body length, and shoulder height), libido, scrotum circumference, and semen production. 125 of Bali cattle Bull with aged about 2-2,5 years were used  in physical measured while nine Bull were choosen randomly to measure libido and semen production. The results of the experiment showed that the average age and body weight were 25.83 ± 0.3719 months and 207.37 ± 1.84 kg, with BCS of 3.97 ± 0.04  (from 5 score), and the chest girth, body length, and shoulder height were 158.27 ± 0.71 cm, 106.87 ± 0.26 cm, and 108.55 ± 0.37 cm, respectively. About 77 head (61.6%) was brown colour, and the other 48 (38.4%) was black, with moderate of capacity of libido (score 7.22 ± 0.66  from  9 score). The average of scrotum circumference was 25.67±1.20 cm, volume of semen were  2.54±0.69 ml and sperm concentration was 1.26 x 109 per ml repectively. Of the total of 125 Bali cattle young bull, only 26% fulfilled the Indonesia Standard of Bali young bull.Key word : young bull, bali cattel, traditionally livestock.

Differences in sexual dimorphism among four gazelle taxa (Gazella spp.) in the Middle East

2010 ◽  
Vol 60 (4) ◽  
pp. 395-412 ◽  
Author(s):  
Peter Cunningham ◽  
Martin Plath ◽  
Torsten Wronski ◽  
Mohamed Sandouka
Keyword(s):  
Body Weight ◽  
Sexual Selection ◽  
Body Size ◽  
Sexual Dimorphism ◽  
Mating Systems ◽  
Research Centre ◽  
Sexually Dimorphic ◽  
Male Sex ◽  
The Difference ◽  
Horn Development

AbstractSexual selection can lead to sexual dimorphism, where elaborated traits used in mate attraction or weaponry are more expressed in the male sex. The degree of sexual dimorphism, however, is known to vary even among closely related taxa. Here we examined sexual dimorphism in horn length and three measures related to body size (body weight, shoulder height, and neck circumference) in four gazelle taxa, representing at least three species, i.e. Dorcas gazelle (G. dorcas), Sand gazelle (G. subgutturosa marica) and Mountain gazelle (G. gazella). The latter is represented by two distinctive phenotypes maintained and bred at the King Khalid Wildlife Research Centre in Saudi Arabia. We describe marked differences in sexual dimorphism among taxa. For example, the difference in sexually dimorphic horn development was driven primarily by females exhibiting pronounced differences in horn development. We discuss how divergent mating systems, and group sizes affect these differences among the examined taxa, with more competition in larger groups probably promoting the evolution of larger horns in females, thereby leading to less sexual dimorphism.

scholarly journals Body Size in Relation to Oxygen Consumption and Pleopod Beat in Ligia Oceanica L

1951 ◽  
Vol 28 (4) ◽  
pp. 492-507 ◽  
Author(s):  
C. ELLENBY
Keyword(s):  
Body Weight ◽  
Oxygen Consumption ◽  
Body Size ◽  
Body Length ◽  
Body Shape ◽  
Size Range ◽  
Total Oxygen ◽  
Rate Of Oxygen Consumption ◽  
Relationship Of ◽  
The Relationship

1. Male Ligia oceanica were used in an investigation of the relationship of body size to rate of oxygen consumption and pleopod beat. 2. Animals varied in weight from 0.04 to 1.03 g. and from 0.95 to 3.1 cm. in length. 3. Body shape does not change significantly over the size range, for length and breadth both increase at the same rate, and pleopod dimensions bear a constant relation to body length. 4. Specific gravity also is constant, for the relation of body weight to the cube of body length shows no trend with increasing size. 5. Oxygen consumption per gram decreases with increasing size and is proportional to the -0.274 Power of body weight. Total oxygen consumption is therefore proportional to the 0.726 power of body weight; but this value does not differ significantly from two-thirds. 6. As shape is constant, surface area is proportional to the square of a linear dimension. It is shown that oxygen consumption per unit of length2 is constant over the size range. Although body length was measured far less accurately than body weight it is shown that it assesses ‘body size’ more accurately. 7. Rate of pleopod beat was measured at 15 and 25°C.; it decreases with the size of the animal. At 15°C. time per beat varies as the 0.66 power of body length, and at 25°C. as the 0.59 power; neither of these values differs significantly from 0.5. Despite the fact that pleopod movement is heavily damped, the rate therefore varies like that of a pendulum. 9. The workof Fox (1936-9) and Fox et al. (1937a)on the rate of oxygen consumption of animals from cold and warmer seas and from different habitats is considered. It is suggested that many of their comparisons are invalidated by differences in body size of the animals concerned, and that, in relation to environment, no basis, theoretical or experimental, has been established for a distinction between ‘nonlocomotory’ and ‘activity’ metabolism.

scholarly journals Polymorphism of VRTN Gene g.20311_20312ins291 Was Associated with the Number of Ribs, Carcass Diagonal Length and Cannon Bone Circumference in Suhuai Pigs

Animals ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 484
Author(s):  
Nengjing Jiang ◽  
Chenxi Liu ◽  
Tingxu Lan ◽  
Qian Zhang ◽  
Yang Cao ◽  
...  
Keyword(s):  
Body Weight ◽  
Body Size ◽  
Body Length ◽  
Carcass Traits ◽  
Carcass Weight ◽  
Potential Marker ◽  
Important Variant ◽  
Fattening Pigs ◽  
Diagonal Length

The vertnin (VRTN) gene g.20311_20312ins291 was reported as an important variant related to the number of ribs (RIB), and the ins/ins genotype was advantageous for improving RIB of Western pigs. The purpose of this study was to determine whether the VRTN gene g.20311_20312ins291 influences RIB, carcass traits, and body size traits, including cannon bone circumference (CBC) in Chinese Suhuai pigs. We found that the VRTN gene g.20311_20312ins291 was polymorphic in Suhuai fattening pigs and gilts. The polymorphism of g.20311_20312ins291 was significantly associated with RIB and CDL in Suhuai fattening pigs (p < 0.01), whereas this variant had no influence on carcass weight (CWT). There was a tendency of association between this variant and carcass straight length (CSL) in Suhuai fattening pigs (p = 0.06). The polymorphism of g.20311_20312ins291 was also significantly associated with CBC in Suhuai gilts (p = 0.04). Furthermore, CBC was positively genetically correlated with body length (0.22, p < 0.01) and body weight (0.15, p < 0.01). Our results indicated that the VRTN gene g.20311_20312ins291 could be used as a potential marker for improving RIB, CDL, and CBC in Suhuai pigs.

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