Intraspecific variation in digit reduction in Testudo: the case
of the Hermann's tortoise

J 2019

Intraspecific variation in digit reduction in Testudo: the case of the Hermann's tortoise

HERNÁNDEZ LUJÁN, Ángel; M. FERRANDIZ-ROVIRA; C. TORRES a A. BERTOLERO

Základní údaje

Originální název

Intraspecific variation in digit reduction in Testudo: the case of the Hermann's tortoise

Autoři

HERNÁNDEZ LUJÁN, Ángel (724 Španělsko, garant, domácí); M. FERRANDIZ-ROVIRA; C. TORRES a A. BERTOLERO

Vydání

ORGANISMS DIVERSITY & EVOLUTION, HEIDELBERG, SPRINGER HEIDELBERG, 2019, 1439-6092

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10602 Biology , Evolutionary biology

Stát vydavatele

Německo

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 2.153

Kód RIV

RIV/00216224:14310/19:00113429

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.1007/s13127-019-00413-3

UT WoS

000502438400005

EID Scopus

2-s2.0-85073806989

Klíčová slova anglicky

Testudo hermanni; Phalange reduction; Ebro Delta; Minorca Island; Phalangeal formula

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 31. 3. 2020 21:16, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Phalangeal reduction is a common and widespread phenomenon among tortoises that has been associated with the adaptation to terrestrial life. While reduced manual digit 1 appears characteristic in almost all Testudo species, it is uncertain why the metacarpal I and distal carpal of the same digit are completely missing in some individuals of Hermann's tortoise (Testudo hermanni hermanni). To clarify this issue, we investigated the number of manual claws in six populations of Hermann's tortoise (one from the Ebro Delta in the Iberian Peninsula and five from Minorca Island), their age, sex, genetic lineage, and the substrate type that they inhabit. The number of claws was ascertained based on direct counts (n > 1500 individuals) and by X-rays (n = 32 individuals), obtaining three different phalangeal formulae: (1-2-2-2-1, D-2-2-2-1, 0-2-2-2-1). Thus, claw counts through both methodologies (direct count and X-ray) further confirm that the observed claws serve as a good proxy to assess the actual number of digits. Our results show no loss of phalanges, metacarpal and carpal bones in digit 1 associated with age, sex, or substrate, contrary to some previous authors who hypothesized a relationship between this loss and sexual dimorphism. Therefore, variations in the number of manual digits and the loss of metacarpal I and distal carpal in digit 1 in Hermann's tortoise are related to population and genetic lineage. More detailed comparisons with other Testudo hermanni populations from elsewhere in Europe would be required to understand the evolutionary significance concerning the intrapopulation variability in the number of digits remaining.

Návaznosti

EF16_027/0008360, projekt VaV

Název: Postdoc@MUNI

Citovat

HERNÁNDEZ LUJÁN, Ángel; M. FERRANDIZ-ROVIRA; C. TORRES a A. BERTOLERO. Intraspecific variation in digit reduction in Testudo: the case of the Hermann's tortoise. ORGANISMS DIVERSITY & EVOLUTION. HEIDELBERG: SPRINGER HEIDELBERG, 2019, roč. 19, č. 4, s. 625-635. ISSN 1439-6092. Dostupné z: https://doi.org/10.1007/s13127-019-00413-3.

@article{1641341,
   author = {Hernández Luján, Ángel and FerrandizandRovira, M. and Torres, C. and Bertolero, A.},
   article_location = {HEIDELBERG},
   article_number = {4},
   doi = {https://doi.org/10.1007/s13127-019-00413-3},
   keywords = {Testudo hermanni; Phalange reduction; Ebro Delta; Minorca Island; Phalangeal formula},
   language = {eng},
   issn = {1439-6092},
   journal = {ORGANISMS DIVERSITY & EVOLUTION},
   title = {Intraspecific variation in digit reduction in Testudo: the case of the Hermann's tortoise},
   url = {https://link.springer.com/article/10.1007/s13127-019-00413-3},
   volume = {19},
   year = {2019}
}

TY  - JOUR
ID  - 1641341
AU  - Hernández Luján, Ángel - Ferrandiz-Rovira, M. - Torres, C. - Bertolero, A.
PY  - 2019
TI  - Intraspecific variation in digit reduction in Testudo: the case of the Hermann's tortoise
JF  - ORGANISMS DIVERSITY & EVOLUTION
VL  - 19
IS  - 4
SP  - 625-635
EP  - 625-635
PB  - SPRINGER HEIDELBERG
SN  - 14396092
KW  - Testudo hermanni
KW  - Phalange reduction
KW  - Ebro Delta
KW  - Minorca Island
KW  - Phalangeal formula
UR  - https://link.springer.com/article/10.1007/s13127-019-00413-3
L2  - https://link.springer.com/article/10.1007/s13127-019-00413-3
N2  - Phalangeal reduction is a common and widespread phenomenon among tortoises that has been associated with the adaptation to terrestrial life. While reduced manual digit 1 appears characteristic in almost all Testudo species, it is uncertain why the metacarpal I and distal carpal of the same digit are completely missing in some individuals of Hermann's tortoise (Testudo hermanni hermanni). To clarify this issue, we investigated the number of manual claws in six populations of Hermann's tortoise (one from the Ebro Delta in the Iberian Peninsula and five from Minorca Island), their age, sex, genetic lineage, and the substrate type that they inhabit. The number of claws was ascertained based on direct counts (n > 1500 individuals) and by X-rays (n = 32 individuals), obtaining three different phalangeal formulae: (1-2-2-2-1, D-2-2-2-1, 0-2-2-2-1). Thus, claw counts through both methodologies (direct count and X-ray) further confirm that the observed claws serve as a good proxy to assess the actual number of digits. Our results show no loss of phalanges, metacarpal and carpal bones in digit 1 associated with age, sex, or substrate, contrary to some previous authors who hypothesized a relationship between this loss and sexual dimorphism. Therefore, variations in the number of manual digits and the loss of metacarpal I and distal carpal in digit 1 in Hermann's tortoise are related to population and genetic lineage. More detailed comparisons with other Testudo hermanni populations from elsewhere in Europe would be required to understand the evolutionary significance concerning the intrapopulation variability in the number of digits remaining.
ER  -

HERNÁNDEZ LUJÁN, Ángel; M. FERRANDIZ-ROVIRA; C. TORRES a A. BERTOLERO. Intraspecific variation in digit reduction in Testudo: the case of the Hermann's tortoise. \textit{ORGANISMS DIVERSITY \&{}amp; EVOLUTION}. HEIDELBERG: SPRINGER HEIDELBERG, 2019, roč.~19, č.~4, s.~625-635. ISSN~1439-6092. Dostupné z: https://doi.org/10.1007/s13127-019-00413-3.

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