Effects of photoperiod on egg production and hatching success, naupliar and copepodite development, adult sex ratio and life expectancy of the tropical calanoid copepod Acartia sinjiensis

Camus, Thomas; Zeng, Chaoshu

doi:10.1016/j.aquaculture.2008.05.008

Cited by 36 publications

(37 citation statements)

References 39 publications

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“…Therefore, many individuals grow and develop faster and produce new offspring after maturity. These results compare favourably with those found by Camus and Zeng () for the tropical calanoid copepod, A. sinjiensis . Similar results were previously reported in Nitokra affinis f. californica at 12:12 compared with 1:23 (Matias‐Peralta et al .…”

Section: Discussionsupporting

confidence: 89%

“…). Most of the previous studies on the copepod egg/offspring production rate normally examined egg/offspring output over 24 h or 48 h (Hopcroft & Roff ; Hirst & McKinnon ) or daily egg production for eight consecutive days (Camus & Zeng ). The individual‐based offspring production rate obtained in our study is comparable to the rates obtained in different conditions reported by several authors (Hopp et al .…”

Section: Discussionmentioning

confidence: 99%

“…were as follows (Miliou ; Carlotti et al . ; Xie & Chen ; Milione & Zeng ; Camus & Zeng ; Phong et al . ):…”

Section: Methodsmentioning

confidence: 99%

“…; McKinnon & Duggan ). Developmental stage of copepods was identified and adults were sexed to obtain sex ratio data (Camus & Zeng ).…”

Section: Methodsmentioning

confidence: 99%

“…It is well documented that some environmental parameters as temperature, food availability, light, predation and salinity affect the mortality, reproduction, sex ratio and inducing diapause egg production of invertebrates (Chang & Lei ; Williamson & Reid ; Anholt & Voordouw ; Alekseev & Lajus ). Some of these parameters are the factors most often implicated as causes of variations in life history traits of copepods (Carlotti, Rey, Javanshir & Nival ; Williamson & Reid ; Holste & Peck ; Camus & Zeng ). Among these parameters, in general, light levels and periodicity are rarely reported in freshwater cyclopoid copepods.…”

Section: Introductionmentioning

confidence: 99%

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Effects of photoperiod on offspring production, development and generation time, survival, adult sex ratio and total life span of freshwater cyclopoid copepod,Mesocyclopssp.: comments on individual variations

2013

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The experiments were conducted to examine the effects of five photoperiod regimes (24:00; 16:08; 12:12; 08:16 and 00:24 hours) (Light: Dark) on reproductive traits, development and generation time, survival rate, adult sex ratio and total life span of freshwater cyclopoid copepod, Mesocyclops sp.. Daily offspring production of individual female was monitored from the last moulting until death of all females. Mean daily offspring production affected by photoperiod, with the highest output recorded at 08:16, which was significantly higher than 24:00 and 00:24, but not differ from 12:12 and 16:08. No significant differences were obtained in total egg sacs per female among treatments. Photoperiods other than 12:12 significantly prolonged the inter‐clutch times. A trend of accelerated development and generation time was shown with increasing illumination periods. With the exception of female's life span, the survival rates of offspring and females as well as adult sex ratio were not significantly affected by photoperiod. Based on results of this study, it is recommended that Mesocyclops sp. can tolerate and reproduce in a wide range of photoperiod regimes, however, photoperiod of 08:16 being adopted in controlled culture due to its high reproductive performance, fast development and long longevity.

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Section: Discussionsupporting

confidence: 89%