Effective investments due to seasonal morphological changes? Possible reasons and consequences of allometric growth and reproduction in adult signal crayfish (Pacifastacus leniusculus)
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F21%3A43902530" target="_blank" >RIV/60076658:12520/21:43902530 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1139/cjz-2020-0155" target="_blank" >https://doi.org/10.1139/cjz-2020-0155</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1139/cjz-2020-0155" target="_blank" >10.1139/cjz-2020-0155</a>
Alternative languages
Result language
angličtina
Original language name
Effective investments due to seasonal morphological changes? Possible reasons and consequences of allometric growth and reproduction in adult signal crayfish (Pacifastacus leniusculus)
Original language description
Signal crayfish (Pacifastacus leniusculus (Dana, 1852)) are among the most invasive macroinvertebrates in Europe, representing economic value as well as serious threats to ecosystems. Despite decades of research, uncertainties with respect to its biology remain. The present study describes the observations of adult signal crayfish during a single growing season, with a sex ratio of 1:1, reared under natural ambient conditions, in which moulting events, growth increments, morphological changes, mortality, and reproductive output were monitored. Two moults were observed in the majority of both sexes, with significant differences in moult growth increments of once- and twice-moulted animals. These led to modifications in morphology during the growing season. Females showed isometric growth at the first moult, while, at the second moult, they strengthened the functional state of structures linked to reproduction. In males, the effect was similar, but to a lesser extent, with extensive chelae development at the second moult. There were no differences in relative fecundity of once- and twice-moulted females. However, signal crayfish have different needs during the growing and reproductive seasons. The presented results indicate the ability to use resources according to current needs (development of strategical body parts) via their seasonal morphological plasticity as seen in representatives of the family Cambaridae.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10613 - Zoology
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Canadian Journal of Zoology
ISSN
0008-4301
e-ISSN
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Volume of the periodical
99
Issue of the periodical within the volume
2
Country of publishing house
CA - CANADA
Number of pages
12
Pages from-to
85-96
UT code for WoS article
000619645400003
EID of the result in the Scopus database
2-s2.0-85101086186