2011), then freshwater species, including the crayfish families such as Astacidae
Global diversity of crayfish (Astacidae
, Cambaridae, and Parastacidae-Decapoda) in freshwater.
gammarus belong to different infraorders, Brachyura and Astacidae
, respectively (De Grave et al., 2009).
There are three families of crayfish, Astacidae
, Parastacidae and Cambaridae.
An illustrated checklist of the American Crayfishes (Decapoda: Astacidae
, Cambaridae, and Parastacidae).
They also share some biological characteristics of all freshwater astacids (Families Astacidae
, Cambaridae and Parastacidae) such as: low fecundity, direct development with hatching in the juvenile stage, extended parental care up to the second juvenile stage, as well as omnivorous feeding habits (Rudolph & Rojas, 2003; Rudolph, 2013).
Month October 1997 December 1997 Food category N (%) W (%) N (%) W (%) Crayfish Astacidae
0.2 1.4 -- -- Other aquatic invertebrates 0.2 0.1 0.6 0.7 Bitterling Rhodeus sericeus 37.5 6.0 36.0 4.6 Bleak Alburnus alburnus 3 6 4 2 0.5 0.2 Common carp Cyprinus carpio 0.2 1.7 -- -- Gudgeon Gobio gobio 12.0 18.7 27.4 28.1 Roach Rutilus rutilus 4.5 2.5 4.3 2.0 Sunbleak Leucaspius delineatus 0.5 0.1 1.1 0.3 Tench Tinca tinca 1.6 1.7 0.5 2.5 White bream Blicca bjoerkna 0.3 0.2 -- -- Carassius sp.
Notes on the North American crayfishes-Family Astacidae
. Proceedings of the United States National Museum 12: 619-634.
(Crustaceos); Lestidae, Calopterygidae, Gomphidae, Cordulegastridae, Aeshnidae, Corduliidae, Libellulidae (Odonatas); Psychomyiidae, Philopotamidae, Glossosomatidae 8 (Tricopteros).
These studies suggest that the ranges of chromosome number in freshwater crayfish families (Astacidae
, Cambaridae, and Parastacidae) are larger than that reported for palaemonoid prawn (Table 2).
Effects of dietary protein and different levels of replacement of fish meal by soybean meal in practical diets for juvenile crayfish (Pacifastacus leniusculus, Astacidae
) from the onset of exogenous feeding.