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Statements

Subject Item
n2:RIV%2F00023272%3A_____%2F14%3A%230002472%21RIV15-MK0-00023272
rdf:type
n10:Vysledek skos:Concept
dcterms:description
With the recent and continuing discovery of further cryptic bat species, it is essential to find morphological species discriminating characters. Pipistrellus pipistrellus (common pipistrelle) and Pipistrellus pygmaeus (soprano pipistrelle) have been recognized as separate species since 1997, but no reliable morphological species discriminating trait has yet been found. The most commonly used morphological species discrimination traits are 'wing vein' pattern and shape and color of the penis, but these have not been validated on sets of genetically identified specimens. The baculum (os penis) has long been used successfully in species discrimination in bats and other mammals. In this study, we tested the reliability of the established traits and demonstrated how to reliably separate the common pipistrelle and the soprano pipistrelle by simple baculum measurements. The bacula of museum specimens of these two species and of Pipistrellus hanaki were imaged with high-resolution microCT. Several measurements were taken on the size-calibrated volume images, and their value for species discrimination was tested by discriminant analysis with leave-one-out cross validation. We showed that P. pipistrellus and P. pygmaeus specimens can be discriminated by measuring the projected length, height, and width of the baculum (n = 48; all but one classified correctly). Geometric morphometrics was used to analyze and locate variations in baculum shape. Principal component analysis of baculum variation was not sufficient to separate these species. Most of the interspecific variation in baculum shape can be found in the proximal third (the base) of the baculum, and most individual variation can be observed in lateral view, especially in the dorsoventral curve. Quantitative details of morphology are becoming more important to distinguish cryptic species and understand their phylogeographic distributions. With the recent and continuing discovery of further cryptic bat species, it is essential to find morphological species discriminating characters. Pipistrellus pipistrellus (common pipistrelle) and Pipistrellus pygmaeus (soprano pipistrelle) have been recognized as separate species since 1997, but no reliable morphological species discriminating trait has yet been found. The most commonly used morphological species discrimination traits are 'wing vein' pattern and shape and color of the penis, but these have not been validated on sets of genetically identified specimens. The baculum (os penis) has long been used successfully in species discrimination in bats and other mammals. In this study, we tested the reliability of the established traits and demonstrated how to reliably separate the common pipistrelle and the soprano pipistrelle by simple baculum measurements. The bacula of museum specimens of these two species and of Pipistrellus hanaki were imaged with high-resolution microCT. Several measurements were taken on the size-calibrated volume images, and their value for species discrimination was tested by discriminant analysis with leave-one-out cross validation. We showed that P. pipistrellus and P. pygmaeus specimens can be discriminated by measuring the projected length, height, and width of the baculum (n = 48; all but one classified correctly). Geometric morphometrics was used to analyze and locate variations in baculum shape. Principal component analysis of baculum variation was not sufficient to separate these species. Most of the interspecific variation in baculum shape can be found in the proximal third (the base) of the baculum, and most individual variation can be observed in lateral view, especially in the dorsoventral curve. Quantitative details of morphology are becoming more important to distinguish cryptic species and understand their phylogeographic distributions.
dcterms:title
MicroCT imaging reveals morphometric baculum differences for discriminating the cryptic species Pipistrellus pipistrellus and P. pygmaeus MicroCT imaging reveals morphometric baculum differences for discriminating the cryptic species Pipistrellus pipistrellus and P. pygmaeus
skos:prefLabel
MicroCT imaging reveals morphometric baculum differences for discriminating the cryptic species Pipistrellus pipistrellus and P. pygmaeus MicroCT imaging reveals morphometric baculum differences for discriminating the cryptic species Pipistrellus pipistrellus and P. pygmaeus
skos:notation
RIV/00023272:_____/14:#0002472!RIV15-MK0-00023272
n3:aktivita
n4:S n4:I
n3:aktivity
I, S
n3:cisloPeriodika
1
n3:dodaniDat
n13:2015
n3:domaciTvurceVysledku
n16:9853162
n3:druhVysledku
n8:J
n3:duvernostUdaju
n15:S
n3:entitaPredkladatele
n9:predkladatel
n3:idSjednocenehoVysledku
29171
n3:idVysledku
RIV/00023272:_____/14:#0002472
n3:jazykVysledku
n11:eng
n3:klicovaSlova
os penis; morphometrics; micro-CT; x-ray microtomography
n3:klicoveSlovo
n6:os%20penis n6:x-ray%20microtomography n6:micro-CT n6:morphometrics
n3:kodStatuVydavatele
PL - Polská republika
n3:kontrolniKodProRIV
[E05894CBF597]
n3:nazevZdroje
Acta Chiropterologica
n3:obor
n17:EG
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
7
n3:rokUplatneniVysledku
n13:2014
n3:svazekPeriodika
16
n3:tvurceVysledku
Metscher, Brian D. Hilgers, Helge Horáček, Ivan Hulva, Pavel Mayer, Christine Herdina, Anna Nele Benda, Petr
n3:wos
000340855000016
s:issn
1508-1109
s:numberOfPages
12
n14:doi
10.3161/150811014X683372