A5064867581- Marine and fisheries research
- Crustacean biology and ecology
- Aquaculture Nutrition and Growth
- Marine Biology and Ecology Research
- Plant and animal studies
- Animal Behavior and Reproduction
- Marine Bivalve and Aquaculture Studies
University of South Bohemia in České Budějovice
2014-2019
South Bohemia research center of aquaculture and biodiversity of hydrocenoses
2014-2019
Abstract Environmental changes such as global warming can affect ecological communities by altering individual life histories and species interactions. Recent studies focusing on the consequences of environmental change interactions highlighted need for a wider, multi‐species context including both trophic non‐trophic (e.g. predator interference). However, effects biotic abiotic factors remain largely unexplored. To fill this gap, we combined laboratory experiments functional response...
Female crayfish stores male gametes after mating until the beginning of egg laying and fertilization. The aim present study was to investigate duration post-mating spermatophore storage as well timing temperature spawning in two species economic importance, namely signal Pacifastacus leniusculus noble Astacus astacus. Results showed that average is significantly (P<0.05) longer (34.6±1.7 days, range: 19 60 days) than (3.9±0.5 1 18 days). highest percentages (46.5%) (44.5%) were 31 40...
The ultrastructure of spermatozoa in three species cambarid crayfish, Cambarus robustus , Orconectes propinquus and rusticus were studied compared with eight previously from different crayfish families using morphological features biometrical data. show a generally conserved pattern including an acrosome nucleus the anterior posterior parts cell, respectively, radial arms that wrap around nucleus, whole cell is enclosed by extracellular capsule. most outstanding feature crest-like...
The reproductive strategies of species non-indigenous crayfish make an important issue in astacological research. Although reproduction has been well studied, there is little information available on the occurrence intersexuality. We report first evidence intersex signal crayfish, Pacifastacus leniusculus (Dana, 1852). An intersexual specimen was found among five tested crayfish. Morphology revealed both male and female genital openings, as gonopods. superficially appeared but contained...