English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Sound knowledge on distribution and ecology of imperiled species is an essentialprerequisite for effective conservation planning. Here, we report the distribution andautecological traits of a newly discovered population of critically-endangeredwhite-clawed crayfish (Austropotamobius pallipes s. str.) in a smallriver in southwestern Germany. Using an established crayfish survey protocol, we detectedwhite-clawed crayfish in a river stretch of 4.5 km, with an estimated abundance of1.4 ± 0.2indiv.·m-2. The sex ratio was even andsexual maturity was attained at approximately 25 mm carapace length (CL).Life-history traits, as assessed using Von Bertalanffy’s growth function, indicate a lifehistory most similar to populations in France, with longevity, asymptotic size, and growthperformance index being higher in males than in females (11 y, 46 mm CL,and 2.8 and 9 y, 41 mm CL, and 2.7, for males and females, respectively).Estimated fecundity ranged from 9 to 135 eggs·female-1 (mean: 90 ± 28). White-clawed crayfish were also found in lower reaches of smalltributary streams, of which one also featured endangered stone crayfish(Austropotamobius torrentium). A syntopic occurrence of both specieswas recorded for the first time within a short stretch. Implications for speciesconservation are discussed

Population ecology of endangered white-clawed crayfish (Austropotamobius pallipess. str.) in a small rhithral river in Germany