Effects of different diets on the reproduction and naupliar development of the copepod Acartia bifilosa

Li, Jie; Sun, Song; Li, Chaolun; Zhang, Zhan; Pu, Xinming

doi:10.1016/j.jembe.2007.12.005

Cited by 34 publications

(26 citation statements)

References 38 publications

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“…Similarly, Carotenuto et al (2002) found that when S. costatum was fed at 0.6 lgC ml -1 to newly hatched first-stage nauplii (N I ) of another calanoid copepod T. stylifera, none of the nauplii were able to develop to copepodite stage and all died within 8 days. Furthermore, Li et al (2006) found that when S. costatum was provided to N I larvae of Calanus sinicus (Brodsky) at 1.0 lgC ml -1 , survival to copepodite stage was achieved but the survival to copepodite stage II (C II ) was very low, i.e., less than 20%.…”

Section: Discussionmentioning

confidence: 99%

“…It has been suggested that taxonomically N. closterium f. minutissima is very close to Phaeodactylum tricornutum (Bohlin) (Shi et al, 2008) and their fatty acid profiles are very similar. The diatom P. tricornutum is generally considered a nutritionally deficient diet for pelagic calanoid copepods since calanoid nauplii failed to develop to copepodites or adults when fed with P. tricornutum (Li et al, 2006;Zheng, 2011). However, in this study, although with reduced survival at higher concentrations, T. japonicus newly hatched nauplii successfully developed to the adult stage when fed with N. closterium f. minutissima at all feeding concentrations from 0.07 to 17.00 lgC ml -1 with survival rates ranging from 60 to 85%.…”

Section: Discussionmentioning

confidence: 99%

“…It has been suggested that in the pelagic ecosystems, larvae of calanoid copepods selectively ingest only a certain size range of algae and if the majority of available algae are outside this range, mass larval mortality ensues (Koski et al, 2008). It has also been suggested that for some calanoid copepods, there may exist a correlation between the size of optimal food particles and the size of copepods (Li et al, 2006). Nejstgaard et al (1995) estimated that the size of suitable algae diets should be in the range of 2-5% of total copepod body size.…”

Section: Discussionmentioning

confidence: 99%

“…Among the five microalgae tested in this study, I. galbana is known as an excellent food for marine planktonic copepods due to its appropriate size for ingestion, ease of digestion because of its thin cell wall, and favorable nutritional profile for copepods (Li et al, 2006;Zheng, 2011). On the other hand, diatoms generally are not considered as ideal diets for marine planktonic copepods because their cell wall contains silicon, some species produce toxic secondary metabolites, and some species are deficient in essential nutrients for copepods (Malej & Harris, 1993;Carotenuto et al, 2002;Li et al, 2006;Poulet et al, 2007;Taylor et al, 2007;Zheng, 2011). It is generally believed that dinoflagellates are a nutritional food source for marine copepods and conducive to their growth and development.…”

Section: Introductionmentioning

confidence: 99%

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Pelagic microalgae as suitable diets for the benthic harpacticoid copepod Tigriopus japonicus

Wang

Zeng

et al. 2015

Hydrobiologia

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It has been reported that certain microalgae have the ability to cause various negative effects on pelagic calanoid copepods. However, whether such pelagic microalgae have similar negative effects on benthic copepods has had little attention. The results of the present study indicated that both benthic naupliar and copepodite stages of the harpacticoid copepod Tigriopus japonicus could effectively utilize five species of pelagic microalgae to complete their development. The effects of different concentrations of various microalgae species on naupliar survival were significant; however, no significant effects on copepodite survival were detected. When fed with two diatoms Chaetoceros muelleri and Skeletonema costatum as well as the dinoflagellate Prorocentrum micans and the chrysophyte Isochrysis galbana at high concentrations (C8.50 lgC ml -1 ), the survival of both naupliar and copepodite stages of T. japonicus was more than 90%. However, when the diatom Nitzschia closterium f. minutissima was fed at the high concentrations of 8.50 lgC ml -1 , the naupliar survival was 76.3 ± 3.2 %. Interestingly, the negative effects of N. closterium f. minutissima as a diet in the naupliar stage did not affect the survival of the copepodites, which may be explained by increased mobility of copepodites.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Pelagic microalgae as suitable diets for the benthic harpacticoid copepod Tigriopus japonicus

Wang

Zeng

et al. 2015

Hydrobiologia

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“…For example, in acute toxicity tests, Chandini (1988) found that the cladocerans D. carinata and Echinisca triserialis were more sensitive to cadmium as food levels decreased, and Koivisto et al (1992) found that in five cladoceran species (D. magna, D. pulex, D. galeata, Bosmina longirostris, and Chydorus sphaericus), copper exposure at low food levels decreased survival compared to high food levels. Further, although a sufficient amount of food may be available, it may still be of too low quality, which may have a negative impact on growth and reproduction (Li et al 2008, Dahl et al 2009). The choice of food may thus be of significant importance for risk characterizations based on standard toxicity tests, especially when using reproduction or population growth data since test organisms used to derive such chronic data need to be fed during testing.…”

Section: Environmental Factors Of Importance For Uptake and Effectsmentioning

confidence: 99%

Improving the Value of Standard Toxicity Test Data in REACH

Breitholtz

Lundström

Dahl

et al. 2010

Regulating Chemical Risks

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Worldwide, environmental risk assessment strategies are based on the assumption that measuring direct effects of single substances, using a few single species tests, in combination with safety factors correcting for extrapolation inconsistencies, can be used to protect higher levels of biological organization, such as populations and even ecosystems. At the same time, we are currently facing a range of pollution problems (Millennium Ecosystem Assessment Series 2005), of which some could at least indirectly be linked to the fact that this assumption may not be fully valid. Consequently, there is an ongoing scientific debate on whether current chemical control protocols are sufficient for protection of ecosystems, and numerous suggestions for improvements have been presented by the scientific community, e.g. alternative tests and testing strategies. On the other hand, few of these suggestions actually reach the regulatory world (or become implemented), and risk assessment today basically follows the same paradigm as 30 years ago. While the new REACH regime is exceptionally ambitious, this chapter observes several problems and gaps in this regulatory framework. We suggest measures and approaches which imply increased ecological realism and understanding in future regulatory work.

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Comparative study on the effects of two diatoms as diets on planktonic calanoid and benthic harpacticoid copepods

et al. 2018

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Two diatoms, Chaetoceros muelleri and Nitzschia closterium f. minutissima, were used for rearing nauplii to adults of Tigriopus japonicus, Acartia pacifica, and Pseudodiaptomus annandalei at different concentrations. The survival rates to adults and activities of superoxide dismutase (SOD) and glutathione-S-transferase (GST) of the adult copepods were measured. The results showed that when fed on N. closterium f. minutissima, A. pacifica was unable to complete naupliar development; while SOD and GST activities of P. annandalei fed N. closterium f. minutissima were significantly higher than those fed the control algae Isochrysis galbana (Prymnesiod), suggesting this diatom species is harmful to these calanoid copepods. The survival rates of T. japonicus were very high when fed N. closterium f. minutissima, indicating that T. japonicus has high acceptance to diatoms. To evaluate whether calanoid copepod had the capacity to acclimatize to diatoms, P. annandalei was cultured for four generations on the two diatoms at 1.7 μgC/ml and survival rates as well as SOD and GST activities were determined for each generation. It was shown that starting at the second generation, P. annandalei exhibited adaption to the diatoms with improved survival. When fed on N. closterium f. minutissima, both SOD and GST activities of P. annandalei showed a trend of decreasing with the progress of generation, whereas no significant difference was found among four generations on C. muelleri. This study demonstrates that whether a diatom species is considered harmful to copepods, which is largely species specific, and diatom concentration is an important influencing factor. Additionally, the capacity of copepod adaption to diatoms over time should not be neglected.

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Effects of different diets on the reproduction and naupliar development of the copepod Acartia bifilosa

Cited by 34 publications

References 38 publications

Pelagic microalgae as suitable diets for the benthic harpacticoid copepod Tigriopus japonicus

Pelagic microalgae as suitable diets for the benthic harpacticoid copepod Tigriopus japonicus

Improving the Value of Standard Toxicity Test Data in REACH

Comparative study on the effects of two diatoms as diets on planktonic calanoid and benthic harpacticoid copepods

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