Morphometrical characterization of the<i>Austropotamobius pallipes</i>species complex

Bertocchi, Silvia; Brusconi, Sara; Gherardi, Francesca; Buccianti, Antonella; Scalici, Massimiliano

doi:10.1080/00222930802254664

Cited by 25 publications

(35 citation statements)

References 41 publications

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“…Trojhorský brook. To avoid an incapability of traditional linear morphometry in an ability to distinguish between size and shape variations, new geometric morphometric approach considering both measurements and shapes is recently used. Based on this attempt, Bertocchi et al (2008) have showed little differences between two possible genetic lineages representing different haplotypes in A. pallipes in Italy. Moreover, Scalici et al (2010) have been able to describe an external carapace morphology in A. pallipes, which is not affected by sexual differences and not or little influenced by different ontogenetic stages.…”

Section: Introductionmentioning

confidence: 99%

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Morphometry of the stone crayfish (Austropotamobius torrentium) in the Czech Republic: allometry and sexual dimorphism

Vlach

Valdmanová

2015

Knowl. Manag. Aquat. Ecosyst.

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Key-words:stone crayfish, morphometry, carapace, abdomen, chelae, allometric growthThe stone crayfish Austropotamobius torrentium (Schrank, 1803) is a native crayfish species in the Czech Republic. Biometric analysis of this crayfish species in the Czech Republic has not been performed up to now. The aim of this paper is to provide these data. The maximum observed body length was 94.8 mm in females and 103.6 mm in males. As the main characters of sexual dimorphism were observed, males had the carapace and chelae relatively longer in relation to the total body length and the carapace length respectively, while females showed longer rostro-cervical part of the carapace and wider abdomen. The chelae width/length ratio was larger in females; the chelae width/length ratios and abdomen width differed between sexes in both adults and juveniles. Most of observed body parts grow allometrically. The positive allometry was found in the following length relations: the carapace length in males only, carapace width, and abdomen width (all related to the carapace length) in females, and chelae width/length ratio in females. Negative allometric growth was recorded in the length of the rostro-cervical part of the carapace, chelae width, and chelae height in males. (Schrank, 1803) est une espèce d'écre-visse indigène de la République tchèque. L'analyse biométrique de cette espèce d'écrevisse n'a pas été effectuée jusqu'à présent en République tchèque. Le but de ce document est de fournir ces données. La longueur maximale observée du corps était de 94,8 mm chez les femelles et 103,6 mm chez les mâles. On a observé les paramètres principaux du dimorphisme sexuel ; les mâles avaient la carapace et les pinces relativement plus longues par rapport à la longueur totale du corps et à la longueur de la carapace, respectivement, tandis que les femelles ont montré une partie rostro-cervicale de la carapace plus longue et un abdomen plus large. Le rapport largeur/longueur des pinces était plus grand chez les femelles ; le ratio largeur/longueur des pinces et la largeur de l'abdomen différaient entre RÉSUMÉ

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Section: Introductionmentioning

confidence: 99%

“…Streissl and Hödl (2002) have focused on allometry of some measurements in A. torrentium. Another point of view expresses allometry as changes in measurements and shapes between juveniles and adults (Klingenberg, 1998; Bertocchi et al, 2008). Novosedlský brook,3.…”

Section: Introductionmentioning

confidence: 99%

Morphometry of the stone crayfish (Austropotamobius torrentium) in the Czech Republic: allometry and sexual dimorphism

Vlach

Valdmanová

2015

Knowl. Manag. Aquat. Ecosyst.

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“…is a protected species that is considered as close to extinction in Germany (Chucholl and Dehus, 2011), and the taxonomic identity of the crayfish was not known at the time of collection. Upon capture, crayfish were transported to the laboratory for examination of the most frequently reported diagnostic morphometric character, namely the ratio between acumen (rostrum tip) length and total rostrum length (A/R) (Albrecht, 1982;Grandjean et al, 2000;2002;Bertocchi et al, 2008a). Although there is high intra-and interspecific morphological variability among populations of the A. pallipes complex (Ghia et al, 2006), Bertocchi et al (2008a) showed that the rostrum tip could be used to discriminate the two lineages (cf.…”

Section: Methodsmentioning

confidence: 99%

“…Since the phenotypic variability among white-clawed crayfish may render morphological identification uncertain (cf. Ghia et al, 2006;Bertocchi et al, 2008a), we also used DNA barcoding for non-ambiguous genetic identification. In particular, we obtained partial sequences of the mitochondrial genes for the 16S rRNA (further abbreviated as 16S) and cytochrome c oxidase subunit I (COI), which had been used in previous studies on diversity of Austropotamobius across Europe (e.g., Trontelj et al, 2005;Ghia et al, 2006;Pedraza-Lara et al, 2010).…”

Section: Methodsmentioning

confidence: 99%

First record of an introduced population of the southern lineage of white-clawed crayfish (Austropotamobius ‘italicus’) north of the Alps

Chucholl¹,

Mrugała

Petrusek

2015

Knowl. Managt. Aquatic Ecosyst.

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“…Among other characteristics of the habitat, fibrous and ramified roots provide shelter to crayfish and act as detritus traps (Bohl 1987;Smith et al 1996;Broquet et al 2002). Also, traditional and geometric morphometric studies were carried out on A. pallipes (Sint et al 2007;Bertocchi et al 2008;Scalici & Gibertini 2009;Scalici et al 2009). However, all ecological and 'morphological' evidences proposed until now were achieved at regional level without providing useful comparison tools.…”

Section: Introductionmentioning

confidence: 99%

Reproduction in the threatened crayfishAustropotamobius pallipes(Decapoda, Astacidae) in the Licenza brook basin (central Italy)

Scalici

Gibertini

2011

Italian Journal of Zoology

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Austropotamobius pallipes is a vulnerable crayfish, and therefore it is necessary to analyse reproduction in the extant populations. Details of the female annual reproductive cycle in a Mediterranean population are provided for two consecutive years. Maternal-size-related variables and date of collection have been considered in relation to the number of ovarian and pleopodal eggs. Reproductive data from 2587 females collected by hand and traps are reported. In total, 204 (14.69%) and 231 (15.93%) individuals in 2003 and 2004, respectively, were ovigerous. Demonstrable differences exist between ovarian and pleopodal egg counts. In particular, ovarian egg counts were considerably higher than expected pleopodal egg numbers. Mating begins in November and is followed by egg laying in early December-January. Berried females occur until May-June, when hatching occurs. The numbers of both ovarian and pleopodal eggs are correlated with the size of females, although fecundity slightly decreases in larger females. The histology of the reproductive organs of both sexes is also analysed.

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Morphometrical characterization of theAustropotamobius pallipesspecies complex

Cited by 25 publications

References 41 publications

Morphometry of the stone crayfish (Austropotamobius torrentium) in the Czech Republic: allometry and sexual dimorphism

Morphometry of the stone crayfish (Austropotamobius torrentium) in the Czech Republic: allometry and sexual dimorphism

First record of an introduced population of the southern lineage of white-clawed crayfish (Austropotamobius ‘italicus’) north of the Alps

Reproduction in the threatened crayfishAustropotamobius pallipes(Decapoda, Astacidae) in the Licenza brook basin (central Italy)

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