Breeding Habits of Crayfish
نویسندگان
چکیده
منابع مشابه
Food Habits of Bald Eagles Breeding in the Arizona Desert
-of 1814 foraging attempts, prey captures, or nest deliveries by Bald Eagles (Haliaeetus Zeucocephalus) in 14 Arizona breeding areas during 1983-1985, 1471 observations were identifiable to at least class: fish (76%), mammal (18%), bird (4%), and reptile/ amphibian (2%). Forty-five species were recorded: catfish (Zctalurus punctatus, fylodictis olivaris), suckers (Catostomus ins&k, C. clarki), ...
متن کاملEvaluation of growth performance and breeding habits of fighting fish (Betta splendens) under 3 diets and shelters
There are various factors affecting the fighting fish larval survival including nutrition, substrate, water quality, pathogen and stress. Experiments were conducted to study the effect of substrate and live feed on larval survival of fighting fish fry. Nine small glass aquaria (60 cm × 30 cm × 30 cm) were used as breeding tanks. Equal pieces (80 cm2) of rigifoam (T1), polythene (T2) and banana ...
متن کاملCRUSTACEANS Crayfish: Northern crayfish Orconectes virilis Louisiana crayfish Procambarus clarkii Water nymph crayfish Orconectes nais Rusty crayfish Orconectes rusticus
Crayfish: Northern crayfish Orconectes virilis Louisiana crayfish Procambarus clarkii Water nymph crayfish Orconectes nais Rusty crayfish Orconectes rusticus Utah is inhabited by a single native crayfish known as the Pilose crayfish Pacifastacus (Hobbsastacus) gambelii. Its native range is in northern Utah’s Bear River, Weber River and Ogden River drainages and in the Raft River Mountain’s drai...
متن کاملevaluation of growth performance and breeding habits of fighting fish (betta splendens) under 3 diets and shelters
there are various factors affecting the fighting fish larval survival including nutrition, substrate, water quality, pathogen and stress. experiments were conducted to study the effect of substrate and live feed on larval survival of fighting fish fry. nine small glass aquaria (60 cm × 30 cm × 30 cm) were used as breeding tanks. equal pieces (80 cm2) of rigifoam (t1), polythene (t2) and banana ...
متن کاملEpidemiology of crayfish plague
Crayfish plague is a severe disease of European crayfish species and has rendered the indigenous crayfish populations vulnerable, endangered or even extinct in the most of Europe. Crayfish plague is caused by an oomycete Aphanomyces astaci, a fungal-like water mould that lives its vegetative life in the cuticle of crayfish and infects other crayfish by producing zoospores. Zoospores swim around...
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ژورنال
عنوان ژورنال: The American Naturalist
سال: 1904
ISSN: 0003-0147,1537-5323
DOI: 10.1086/278387