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Distribution and dispersal of two invasive crayfish species in the Drava River basin, Croatia
The aim of this work is to explore the current distribution and dispersal rates of two nonindigenous crayfish species (NICS) recorded in Croatia: the signal crayfish ( Pacifastacus leniusculus ) andExpand
Changes in population characteristics and structure of the signal crayfish at the edge of its invasive range in a European river
TLDR
The recorded differences in population structure and male morphometry along the invasion pathway could lead to important clues about dynamics of range expansion and population establishment, highlighting the traits that promote dispersal and better response to local conditions in new habitats. Expand
Recent changes in distribution pattern of freshwater crayfish in Croatia − threats and perspectives
Analysis of Croatian freshwater crayfish populations, aiming to gather new distributional data and complement previous surveys (2005–2011), was performed during 2014–2016, within the frame of NaturaExpand
Morphological changes in Astacus astacus gonads during the reproductive cycle
TLDR
The reproductive cycle of Astacus astacus was described by the external observation of the gonads, recording changes in the gonadosomatic index (GSI) and by the histological analysis of the reproductive organs, and the maturation of germinative cells was synchronized, both in testes and ovaries. Expand
FECUNDITY OF INDIGENOUS STONE CRAYFISH POPULATIONS: IMPLICATIONS FOR CRAYFISH CONSERVATION IN AUSTRIA AND CROATIA
TLDR
It was found that Croatian females are bigger than Austrian ones, and that they carry more eggs of smaller size, while in Austiran populations a significant negative correlation was recorded between egg number and thier size. Expand
Trait variability of the signal crayfish (Pacifastacus leniusculus) in a recently invaded region reflects potential benefits and trade-offs during dispersal.
TLDR
This study highlights the importance of examining trait variability as invader advances its range, since a shift between the rate of population growth and counteracting pressure from other niche competitors could represent one of the crucial determinants of a lag between establishment and expansion of invasive species. Expand
Aquatic Macroinvertebrates of the Sava River
The objective of this chapter is to present the data on aquatic macroinvertebrate communities along the Sava River, based on investigation performed during 2011 and 2012 at 12 sampling sites withinExpand
The effects of the trematode Bucephalus polymorphus on the reproductive cycle of the zebra mussel Dreissena polymorpha in the Drava River
TLDR
The effects of the trematode Bucephalus polymorphus on the reproductive cycle of the zebra mussel Dreissena polymorpha were examined in mussel populations from the Drava River to determine changes in volume of the entire visceral mass, gonads, digestive glands and in particular the volume of trematodes. Expand
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