On the relationship between scale number in the lateral line in the african barbel Barbus intermedius and the rate of ontogeny (by experimental data)

Смирнов, С. В.; Dzerzhinskii, K. F.; Левин, Б. А.

doi:10.1134/s0032945206010176

Cited by 24 publications

(28 citation statements)

References 10 publications

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“…The role of thyroid hormones as primary regulators of fish metamorphosis and less drastically expressed larval‐to‐juvenile transition is well established (Brown, ; de Jesus, Toledo, & Simpas, ; Laudet, ; McMenamin & Parichy, ). Our studies (Bolotovskiy & Levin, ; Levin, ; Levin & Levina, ) as well as the studies of others (Shkil, Levin, Abdissa, & Smirnov, ; Smirnov, Dzerzhinskii, & Levin, ) revealed that triiodothyronine and goitrogen (an inhibitor of synthesizing activity of thyroid gland) treatment during early development resulted in significant shifts of serially repeated elements such as pharyngeal teeth and lateral line scales. Recently it was discovered that thyroid hormones are involved in developmental regulation of skeletal elements of the teleost axial skeleton (Kapitanova & Shkil, ; Shkil, Kapitanova, Borisov, Abdissa, & Smirnov, ).…”

Section: Introductionsupporting

confidence: 59%

Effects of thyroid hormones on vertebral numbers in two cyprinid fish species:Rutilus rutilus(Linnaeus, 1758) andAbramis brama(Linnaeus, 1758)

Bolotovskiy

Левин

2018

J Appl Ichthyol

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Summary Previous studies revealed that thyroid hormones (TH) are crucial regulators of fish development and that manipulation of the thyroid gland function can induce developmental heterochronies. These heterochronies are known to be responsible for changes in the number of serially repeating skeletal elements, such as scales, fin rays and pharyngeal teeth. The present study demonstrates that thyroid function manipulation provokes heterochronies in the development of the fish axial skeleton. We studied the variation of the total vertebral numbers as well as the vertebral numbers in different regions of axial skeleton as influenced by manipulation of level of thyroid hormone in two cyprinid species – the common roach Rutilus rutilus (Linnaeus, 1758) and bream Abramis brama (Linnaeus, 1758). As a result, the numbers of total and caudal (more rarely, abdominal) vertebrae were significantly altered. TH‐treated fish demonstrated a reduced number of vertebrae at an earlier completion of calcification and at a smaller body size. This finding agrees well with the concept of pleomerism sensu C. C. Lindsey (). Another effect of TH on the phenotype of the axial skeleton was the frequent increase in the number of vertebrae in the caudal skeleton (four in place of the normal three) because of non‐fusions in the urostyle.

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Section: Introductionsupporting

confidence: 59%

Effects of thyroid hormones on vertebral numbers in two cyprinid fish species:Rutilus rutilus(Linnaeus, 1758) andAbramis brama(Linnaeus, 1758)

Bolotovskiy

Левин

2018

J Appl Ichthyol

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“…Effects and consequences of TH alterations on development of cyprinid squamation have been previously described (Smirnov et al., 2006; Smirnov and Levin, 2007; Shkil et al., 2010c; Levin, 2011). Our investigation of zebrafish development confirms these previous data indicating that hyperthyroidism leads to the premature appearance of scales and their reduced number in adult fish, whereas hypothyroidism causes the delayed appearance and increased number of scales.…”

Section: Resultsmentioning

confidence: 99%

“…In different fish species, TH are shown to influence developmental changes in the skull (Kang and Devlin, 2003; Okada et al., 2003), squamation (Brown, 1997; Crane et al., 2005; Smirnov et al., 2006; Levin, 2010, 2011), pigmentation pattern (Brown, 1997; Okada et al., 2003), pectoral and pelvic fins (Brown, 1997; Okada et al., 2003), dorsal fins (Okada et al., 2003), erythrocytes (Miwa and Inui, 1991), skeletal muscles (Yamano et al., 1991), and dentition (Shkil et al., 2010a; Bolotovskiy and Levin, 2011). TH induce the beginning of TH‐dependent developmental events and/or influence their rate; alterations of TH level may cause changes in their timing and rate.…”

Section: Introductionmentioning

confidence: 99%

Thyroid hormone in skeletal development of cyprinids: effects and morphological consequences

Shkil

Капитанова

Borisov

et al. 2012

Journal of Applied Ichthyology

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Summary The effects of thyroid hormone (TH) level changes on skeletal development were studied in cyprinids Labeobarbus intermedius (Barbinae) and Danio rerio (Danioninae). TH was revealed to influence development of a skull, axial skeleton, paired fins and girdles, and squamation. Usually, high TH‐level promotes the premature onset and acceleration of ontogenetic processes, whereas TH‐deficiency delays and retards them. However, skeletal elements differ in TH‐responsiveness. Alterations of TH level induce developmental changes in some structures but do not cause any changes in others. As a result, the normal sequence of ontogenetic events and the temporal interrelations between ontogenetic processes undergo changes resulting in changes in adult morphology.

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“…Similar results were obtained for the lateral line scale count. This character varies in natural populations of investigated species and displays a high range of variability (from 26 to 40) (Banister, ; Smirnov et al., ). In our samples, the lateral line scale count varied from 29 to 40.…”

Section: Discussionmentioning

confidence: 99%

Internal sources of infraorbital series and lateral line scale count variability in six Labeobarbus species composing the Lake Tana (Ethiopia) species flock

Shkil

Смирнов

2018

J Appl Ichthyol

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Summary The study of the nature of intra‐ and interspecific variation is essential for understanding of the mechanisms underpinning species divergence and evolution. Here, we examined the variability of two characters, infraorbital bone number and lateral line scale count, in six Labeobarbus species: L. intermedius, L. brevicephalus, L. crassibarbis, L. megastoma, L. truttiformis, and L. macrophtalmus composing Lake Tana (Ethiopia) species flock. For this aim, in 2006‐2014, we assessed the variability of both traits in natural populations and in sixteen experimental homo‐ and heteronomic crossings reared under standard conditions. As a result, high level of natural intraspecific variability was detected, whereas significant interspecific differences in the range of variability were not revealed. However, evaluation of heritability coefficients in experimental crossings indicated the genetic background of the variability for both traits. This finding along with the previously revealed dependence of investigated characters upon the thyroid hormones allowed us to hypothesize that observed natural variability is a phenotypic consequence of genetically determined fluctuations in the activity of thyroid hormone axis.

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On the relationship between scale number in the lateral line in the african barbel Barbus intermedius and the rate of ontogeny (by experimental data)

Cited by 24 publications

References 10 publications

Effects of thyroid hormones on vertebral numbers in two cyprinid fish species:Rutilus rutilus(Linnaeus, 1758) andAbramis brama(Linnaeus, 1758)

Effects of thyroid hormones on vertebral numbers in two cyprinid fish species:Rutilus rutilus(Linnaeus, 1758) andAbramis brama(Linnaeus, 1758)

Thyroid hormone in skeletal development of cyprinids: effects and morphological consequences

Internal sources of infraorbital series and lateral line scale count variability in six Labeobarbus species composing the Lake Tana (Ethiopia) species flock

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