Population growth and productivity of the cyclopoid copepodsParacyclopina nana,Apocyclops royiand the harpacticoid copepodTigriopus japonicusin mono and polyculture conditions: a laboratory study

Lee, Kyun-Woo; Dahms, Hans-Uwe; Park, Heum Gi; Kang, Jung-Hoon

doi:10.1111/j.1365-2109.2011.03071.x

Cited by 22 publications

(16 citation statements)

References 23 publications

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“…Cannibalism in cyclopoids (including Apocyclops) has already been reported (Pagano et al, 1998;Lee et al, 2013). In the present study, when we studied the female egg production and the offspring size when females and nauplius were cultivated together and apart ("offspring predation experiments"), the lower offspring survival rates in the treatment B (females + offspring) suggest that the females could be feeding on their own progeny.…”

Section: Discussionmentioning

confidence: 36%

“…The effects of salinity, temperature, light and prey availability on egg production, development, longevity, swimming and predation behaviour of some Apocyclops species (e.g., A. denzigicus and A. royi) have been widely reported (e.g., Farhadian et al, 2008;Mohamed et al, 2008;Muthupriya & Altaff, 2009;Wu et al, 2011;Dhanker & Hwang, 2013;Lee et al, 2013;Farhadian et al, 2014). However, this is the first experimental study on Apocyclops procerus (Herbst, 1955).…”

Section: Introductionmentioning

confidence: 97%

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Feeding ecology of Apocyclops procerus (Copepoda, Cyclopoida) under experimental conditions

Guenther

Durst

Felismino

et al. 2015

Crustac

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Copepods are key links between primary producers and higher pelagics. We investigated, for the first time, under laboratory conditions, some aspects of the reproductive behaviour and feeding preferences of Apocyclops procerus (Copepoda: Cyclopoida) under different conditions of salinity and food supply. This is also its first record for Pernambuco (NE Brazil). The females carry their eggs until their eclosion and present several cycles of egg production without being further fecundated. Egg production and adult life span were not affected by differences in salinity or food supply. Offspring predation was also observed. From the three microalgae species offered to A. procerus individuals, Thalassiosira weissflogii, Chaetoceros muelleri (Ochrophyta) and Isochrysis galbana (Haptophyta), the small round-shaped I. galbana was preferred over the large and spiny diatoms, in spite of its lower nutritional value. The high salinity tolerance and apparently omnivorous feeding habits of A. procerus may enable it to predominate in estuarine waters. RESUMOOs copépodos são elos fundamentais entre os produtores primários e os consumidores pelágicos. Nós averiguamos, pela primeira vez em condições experimentais, alguns aspectos do comportamento reprodutivo e das preferências alimentares de Apocyclops procerus (Copepoda: Cyclopoida) sob diferentes condições de salinidade e disponibilidade de alimento. Este é também o primeiro registro desta espécie em Pernambuco (NE do Brasil). As fêmeas carregam seus ovos até a eclosão e apresentam vários ciclos de produção de ovos sem nova fecundação. A produção de ovos e a longevidade dos adultos não foram afetadas por diferenças de salinidade ou disponibilidade de alimento. Foi observada também predação da prole pelas fêmeas. Das três espécies de microalga oferecidas aos indivíduos de A. procerus, Thalassiosira weissflogii, Chaetoceros muelleri (Ochrophyta) e Isochrysis galbana (Haptophyta), a espécie de menor tamanho e de forma circular (I. galbana) foi preferida apesar do seu valor nutricional reduzido. A alta tolerância à salinidade e aparente hábito onívoro de A. procerus é possivelmente a razão de sua predominância em águas estuarinas.

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Section: Discussionmentioning

confidence: 36%

Section: Introductionmentioning

confidence: 97%

Feeding ecology of Apocyclops procerus (Copepoda, Cyclopoida) under experimental conditions

Guenther

Durst

Felismino

et al. 2015

Crustac

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“…A. royi is a relatively small egg-carrying copepod with a prosome length of 0.5 mm (Fig 1A) [1, 2]. It has a life cycle of 7-8 days [5], and can tolerate temperatures of 15-35 °C [6], and salinities of 0-35 psu [7]. In a recent publication, we report its ability to biosynthesize the polyunsaturated fatty acid Docosahexaenoic acid (DHA) from alpha -Linolenic acid [8, 9] which makes Apocyclops royi an interesting organism for copepod physiological studies.…”

Section: Introductionmentioning

confidence: 99%

The whole genome sequence and mRNA transcriptome of the tropical cyclopoid copepod Apocyclops royi

Jørgensen

Nielsen

Petersen

et al. 2018

Preprint

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Copepoda is one of the most ecologically important animal groups on Earth, yet very few genetic resources are available for this Subclass. Here, we present the first whole genome sequence (WGS, acc. UYDY01) and the first mRNA transcriptome assembly (TSA, Acc. GHAJ01) for the tropical cyclopoid copepod species Apocyclops royi. Until now, only the 18S small subunit of ribosomal RNA gene and the COI gene has been available from A. royi, and only one other cyclopoid copepod had WGS resources available. Overall, the provided resources are the 7th copepod species to have WGS available and the 19th copepod species with TSA information available. We analyze the length and GC content of the provided WGS scaffolds as well as the coverage and gene content of both the WGS and the TSA assembly. Finally, we place the resources within the copepod order Cyclopoida as a member of the Apocyclops genus. We estimate the total genome size of A. royi to 450 Mb, with 181 Mb assembled nonrepetitive, 76 Mb assembled repeats and 193Mb unassembled sequence. The TSA assembly consists of 29,737 genes and an additional 45,756 isoforms. In the WGS and TSA assemblies, >80% and >95% of core genes can be found, though many in fragmented versions. The provided resources will allow researchers to conduct physiological experiments on A. royi, and also increase the possibilities for copepod gene set analysis, as it adds substantially to the copepod datasets available.

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“…Hence, their carrying capacities are considered not to reflect food shortage.Population growth, of harpacticoids, have been reported to follow logistic growth with a rapid increasing density in the beginning of a newly started culture, typically followed by a rapid decline after the population have reached a maximum(VanderLugt & Lenz 2008;Lee, Dahms, Park, & Kang, 2013). The biochemical properties of A. tonsa and T. holothuriae are superior to the properties of rotifers when fed the algal Rhodomonas salina (Drillet, Jørgensen, Sørensen, Ramløv, & Hansen, 2006).…”

mentioning

confidence: 99%

“…2011). We have adapted the approach described inLee et al (2013) to test mono and mixed culture dynamics of A. tonsa and T. holothuriae in a S as well as a R setup with presence of excess food. The populations of A. tonsa and T. holothuriae were most likely never food limited during the present study.…”

mentioning

confidence: 99%

Interactions between populations of the calanoid copepodAcartia tonsaDana and the harpacticoid copepodTisbe holothuriaeHumes in mixed cultures of live feed for fish larvae

et al. 2017

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Copepods are considered high quality live feed for fish larvae due to their large within species size span, swimming pattern triggering hunting behaviour, and complete biochemical profile. In a continuous cultivation system aiming at the planktonic calanoid Acartia tonsa an intruding harpacticoid frequently appears. We experimentally evaluate how the interaction from the semi-benthic Tisbe holothuriae is affecting our cultures and ask whether the two copepod-species are expected to pose competitive exclusion or co-exist long-term. This is pursued by establishing 40 days mono-and mixed copepod cultures reared in a stationary setup (S) theoretically advantageous for T. holothuriae and a rotating setup (R) with organisms kept in suspension by use of a plankton wheel, theoretically advantageous for A. tonsa. The carrying capacities of A. tonsa in either mono-or mixed cultures are not affected whether the copepods are subject to S or R treatment. Only exception is the S-setup containing mixed culture were A. tonsa obtains a significantly lower carrying capacity compared with A. tonsa alone in R-setup. The mono-and mixed cultures of T. holothuriae are, however, highly negatively affected by the R setup compared with S setup. A long-term solution to limit the presence of T. holothuriae is to apply turbulence level in a classical stagnant tank setup to an extend that suppress T. holothuriae and simultaneously allow algae in suspension as food for A. tonsa, make their eggs sediment as well as minimize risk of benthic-predation on eggs. K E Y W O R D Sco-existence, culture contamination, logistic population development, niche differentiation, polyculture

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Population growth and productivity of the cyclopoid copepodsParacyclopina nana,Apocyclops royiand the harpacticoid copepodTigriopus japonicusin mono and polyculture conditions: a laboratory study

Cited by 22 publications

References 23 publications

Feeding ecology of Apocyclops procerus (Copepoda, Cyclopoida) under experimental conditions

Feeding ecology of Apocyclops procerus (Copepoda, Cyclopoida) under experimental conditions

The whole genome sequence and mRNA transcriptome of the tropical cyclopoid copepod Apocyclops royi

Interactions between populations of the calanoid copepodAcartia tonsaDana and the harpacticoid copepodTisbe holothuriaeHumes in mixed cultures of live feed for fish larvae

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