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freshwater crayfish
Experimental investigations were made of the influence of an external alternating voltage on the amplitude and heartbeat rate of Daphnia freshwater crayfish.
      
The effect of the androgenic gland (AG) on female agonistic behavior was studied in the Australian freshwater crayfish Cherax quadricarinatus.
      
INTERSEXUALITY IN THE FRESHWATER CRAYFISH SAMASTACUS SPINIFRONS (PHILIPPI, 1882) (DECAPODA, PARASTACIDAE)
      
Samastacus spinifrons, a South American freshwater crayfish, has always been characterized as gonochoric in the literature.
      
Adult freshwater crayfish, Austropotamobius pallipes, were maintained in the laboratory in such a way that mating, spawning, and maternal egg incubation took place under controlled conditions.
      
The cuticle of the freshwater crayfish, Procambarus clarkii (Girard, 1852), has several extracellular, cuticular isozymes for carbonic anhydrase (CA) which were isolated and purified via affinity chromatography.
      
The distribution pattern of freshwater crayfish in Croatia
      
Research on the distribution of freshwater crayfish should be more intensive, and will be continued in the future.
      
Biology of a Translocated Population of the Large Freshwater Crayfish, Cherax Cainii Austin >amp; Ryan, 2002 in a Western Australian
      
By comparing the ethograms of various species we may be able to obtain further indications to the phylogeny of the freshwater crayfish.
      
hickmani occurs in buttongrass moorland in surface pools and in the subterranean burrows of the freshwater crayfish, Ombrastacoides spp., which open into these surface pools.
      
Cardiac activity of freshwater crayfish at wakefulness, rest, and "animal hypnosis"
      
In laboratory experiments, simultaneous continuous recording of the circadian cycle of behavioral reactions and cardiac activity of freshwater crayfish Astacus astacus and Procambarus clarkii was carried out.
      
It was concluded that freshwater crayfish as a representative of the highly organized invertebrates can serve an effective model for studying mechanisms of sleep-like states and "animal hypnosis" in animals.
      
Two different kinds of mechanoreceptive hairs (smooth and feathered) on the second antennae of the freshwater crayfish, Orconectes virilis, have been investigated for their stimulus coding propertics.
      
The analysis of Co(II)-apoHc complexes of two arthropodan species (freshwater crayfish): Orconectes limosus and Astacus astacus enabled to reach some conclusions about possible cobalt binding sites in the hemocyanin molecules.
      
Sperm allocation in relation to male traits, female size, and copulation behaviour in freshwater crayfish species
      
We investigated sperm allocation in Austropotamobius italicus, a freshwater crayfish exhibiting a coercive mating system and external fertilisation, in relation to male and female traits and copulation behaviour under laboratory conditions.
      
These results indicate that male freshwater crayfish can modulate their sperm expenditure in accordance with cues that indicate female fecundity.
      
Effects of female mating status on copulation behaviour and sperm expenditure in the freshwater crayfish Austropotamobius italic
      
 

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