Effects of temperature on the survival and growth of two cambarid crayfish juveniles
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Tarih
2007
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Brill Academic Publishers
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Third instar eastern white river crayfish, Procambarus acutus acutus (10 +/- 0.04 mm TL), and red swamp crayfish, Procambarus clarkii (8 +/- 0.02 mm TL) were stocked separately (intraspecific treatment) or in combination (interspecific treatment) at a density of 76 crayfish/m(2) in 15-1 aquaria. Survival and growth were assessed at 30-day intervals over a 90-day experimental period, which followed a fall (26-10 degrees C), winter (10-10 degrees C), and spring (10-26 degrees C) temperature regime. A commercial crayfish feed (Zeigler 45-50% protein) was provided twice on five days a week. The survival of the two species was similar through the fall and winter temperature courses; however, survival of P a. acutus was significantly greater than that of P clarkii under the spring temperature regime. The survival of each species was also better in the intraspecific than in the interspecific treatment during the spring period. No significant difference was detected in the growth of both species through the fall and winter temperature regimes. Over the spring temperature course, Procambarus acutus acutus grew faster than Procambarus clarkii in both treatments. In contrast to P a. acutus, P. clarkii grew faster in the interspecific treatment than in the intraspecific one. The overall growth of P. a. acutus was 14 to 21% higher than that of P clarkii for the fall, winter, and spring temperature regime over the total of 90 days.
Açıklama
Anahtar Kelimeler
Procambarus-Acutus-Acutus, Culture
Kaynak
Crustaceana
WoS Q Değeri
Q4
Scopus Q Değeri
Q3
Cilt
80
Sayı
8
