The influence of photoperiod on processes associated with molting and reproduction in the crayfish Orconectes nais (Faxon)

Optimal temperature and photoperiod for the spawning of blue crab,Callinectes sapidus, in captivity

“…paludosus (Paris & Jenner, ), and crayfish, P . clarkia , Procambarus simulans , Orconectes nais and Cambarus spp (Dendy, ; Perryman, ; Rice & Armitage, ; Stephens, ; Suko, ).…”

Optimal temperature and photoperiod for the spawning of blue crab,Callinectes sapidus, in captivity

“…paludosus (Paris & Jenner, ), and crayfish, P . clarkia , Procambarus simulans , Orconectes nais and Cambarus spp (Dendy, ; Perryman, ; Rice & Armitage, ; Stephens, ; Suko, ).…”

Induced Maturation of Prawn Penaeus indicus

“…Ovarian development may inhibit moulting in certain species of crab (Weitzman, 1964;Cheung, 1966Cheung, , 1969Adiyodi, 1968). In lobsters and crayfish, however, the moult cycle appears to be of overriding importance with ecdysis occuring during various stages of ovary development (Berry, 1971;Rice and Armitage, 1974;Aiken and Waddy, 1976). The Penaeoidea thus appear to be similar to the latter in that moulting is of prime importance, but differ in that there is never ovarian development during ecdysis.…”

The effect of darkness on mating and pleopodal egg production time in a freshwater crayfish, Astacus leptodactylus Eschscholtz

“…On the other hand, crayfish reproduction is affected by many environmental factors. Light is one of the most important factors in reproduction of crayfish (Suko 1958;Aiken 1969;Rice and Armitage 1974;Dendy 1978;Mason 1978;Rouse and Yeh 1995). Diaz et al (2003) stated that seasonal changes in the proportions of light/dark are most likely to be of significance in the crayfish life and growth, molting, metabolic rate and that maturation of gonads and mating time may be controlled by photoperiod in some species.…”

Optimal temperature and photoperiod for the spawning of blue crab,Callinectes sapidus, in captivity

“…paludosus (Paris & Jenner, ), and crayfish, P . clarkia , Procambarus simulans , Orconectes nais and Cambarus spp (Dendy, ; Perryman, ; Rice & Armitage, ; Stephens, ; Suko, ).…”

Induced Maturation of Prawn Penaeus indicus

“…Ovarian development may inhibit moulting in certain species of crab (Weitzman, 1964;Cheung, 1966Cheung, , 1969Adiyodi, 1968). In lobsters and crayfish, however, the moult cycle appears to be of overriding importance with ecdysis occuring during various stages of ovary development (Berry, 1971;Rice and Armitage, 1974;Aiken and Waddy, 1976). The Penaeoidea thus appear to be similar to the latter in that moulting is of prime importance, but differ in that there is never ovarian development during ecdysis.…”

The effect of darkness on mating and pleopodal egg production time in a freshwater crayfish, Astacus leptodactylus Eschscholtz

“…On the other hand, crayfish reproduction is affected by many environmental factors. Light is one of the most important factors in reproduction of crayfish (Suko 1958;Aiken 1969;Rice and Armitage 1974;Dendy 1978;Mason 1978;Rouse and Yeh 1995). Diaz et al (2003) stated that seasonal changes in the proportions of light/dark are most likely to be of significance in the crayfish life and growth, molting, metabolic rate and that maturation of gonads and mating time may be controlled by photoperiod in some species.…”

Optimal temperature and photoperiod for the spawning of blue crab,Callinectes sapidus, in captivity

“…paludosus (Paris & Jenner, ), and crayfish, P . clarkia , Procambarus simulans , Orconectes nais and Cambarus spp (Dendy, ; Perryman, ; Rice & Armitage, ; Stephens, ; Suko, ).…”

Induced Maturation of Prawn Penaeus indicus

“…Ovarian development may inhibit moulting in certain species of crab (Weitzman, 1964;Cheung, 1966Cheung, , 1969Adiyodi, 1968). In lobsters and crayfish, however, the moult cycle appears to be of overriding importance with ecdysis occuring during various stages of ovary development (Berry, 1971;Rice and Armitage, 1974;Aiken and Waddy, 1976). The Penaeoidea thus appear to be similar to the latter in that moulting is of prime importance, but differ in that there is never ovarian development during ecdysis.…”

The effect of darkness on mating and pleopodal egg production time in a freshwater crayfish, Astacus leptodactylus Eschscholtz

“…On the other hand, crayfish reproduction is affected by many environmental factors. Light is one of the most important factors in reproduction of crayfish (Suko 1958;Aiken 1969;Rice and Armitage 1974;Dendy 1978;Mason 1978;Rouse and Yeh 1995). Diaz et al (2003) stated that seasonal changes in the proportions of light/dark are most likely to be of significance in the crayfish life and growth, molting, metabolic rate and that maturation of gonads and mating time may be controlled by photoperiod in some species.…”