Reproductive cycle of Branchiura sowerbyi (Oligochaeta: Naididae: Tubificinae) cultivated under laboratory conditions

Lobo, Haroldo; Alves, Roberto da Gama

doi:10.1590/s1984-46702011000400003

Cited by 8 publications

(9 citation statements)

References 29 publications

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“…This agrees with our findings here, which showed that more than 80% of the young specimens hatched within 8 to 12 days after the cocoon was laid. This period is shorter than that observed for B. sowerbyi (14 to 16 days) under similar temperature conditions (NASCIMENTO & ALVES 2008, LOBO & ALVES 2011. ASTON (1973) observed that L. hoffmeisteri is capable of developing from an embryo to a mature individual in less than five weeks.…”

Section: Discussionmentioning

confidence: 58%

Influence of body weight and substrate granulometry on the reproduction of Limnodrilus hoffmeisteri (Oligochaeta: Naididae: Tubificinae)

Lobo¹,

Alves²

2011

Zoologia (Curitiba, Impr.)

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Limnodrilus hoffmeisteri Claparede, 1862 is a cosmopolitan Oligochaeta widely used as indicator of organic pollution in water bodies. Previous contributions have shown the effects of organic matter and temperature on the life history of the species, although very little is known about the factors that influence its reproduction. This study aimed 1) to test whether the larger weight of individuals results in an increase in the reproduction rate and 2) to test the influence of two granulometric fractions of sand on the reproduction and growth the species. In the first experiment, specimens of L. hoffmeisteri were separated in two groups with different average weights (small individuals = 6.63 ± 1.28 mg; large individuals = 12.44 ± 3.99 mg) and kept at 15 ± 1ºC for 21 days. The results of this experiment showed that the number of cocoons was statistically similar between the groups, but the mean number of eggs per cocoon produced by large individuals (2.78 ± 0.35) was greater than that produced by small individuals (7.45 ± 2.50). In the second experiment, weekly observations were conducted for 25 weeks in two groups of 30 specimens: one kept in fine sand and the other in medium sand, at 25 ± 1ºC. The single significant difference was in the number of cocoons per adult per day (0.37 ± 0.22 and 0.23 ± 0.24, for fine and medium sand, respectively). Individuals reared in fine sand produced a greater number of descendants compared to those reared in medium sand in the same period of time

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Section: Discussionmentioning

confidence: 58%

Influence of body weight and substrate granulometry on the reproduction of Limnodrilus hoffmeisteri (Oligochaeta: Naididae: Tubificinae)

Lobo¹,

Alves²

2011

Zoologia (Curitiba, Impr.)

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“…Kemudian yaitu dari jenis Branchiura sowerbyi pada Sungai Badung sebanyak 10 % dan Sungai Mati sebanyak 32% dengan total jumlah jenisnya yaitu 86 spesies, Branchiura sowerbyi merupakan cacing Tubificidae yang biasa ditemukan pada lingkungan air tawar yang kaya akan bahan organik terdapat didaerah tropic dan daerah yang beriklim sedang (Lobo & Alves, 2011). Branchiura sowerbyi juga cacing yang terdistribusi secara luas dan hampir terdapat di seluruh dunia, cacing tersebut biasanya hidup pada perairan tenang dengan tipe substrat lumpur dan mampu bertahan dengan kondisi pH dan DO ekstrim, seperti pada perairan gambut (Honatta, 2010 (Siahaan et al, 2012).…”

Section: Gambar 3 Presentase Komposisi Annelida (A) Sungaiunclassified

Status Pencemaran Lingkungan Sungai Badung dan Sungai Mati di Provinsi Bali Berdasarkan Bioindikator Phylum Annelida

Labbaik¹,

Restu²,

Pratiwi³

2017

J. Mar. Aquat. Sci.

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Water pollution is the entry or inclusion of substances, energy and other components into the water by human activities, so that water quality decrease to a certain level. This study a timed to monitor the pollution of aquatic environment in the Badung River and Mati River by using Annelida phylum as bioindicator, the study was conducted from February to March 2017. The data obtained were analyzed by the structure of the community, and also used ABC (Abudance-Biomass Comparison) method. The result of the research showed that the most abundance of Annelida and dominant from all stations of Badung River and Mati River was Lumbriculus variegatus. Is showed that it contamination status was categorized as mild contamination because it was dominant by facultative organism. The structure of the Annelida community in the Badung River and Mati River with the value of the diversity index was categorized as low Annelida (H '<1.0). The uniformity index was categorized as depressed Annelida community (0.00 <E 0.50), high dominance index of Badung River (0.75 <C ? 1.00), Mati River was medium (0.50 < C < 0.75). The result of the water quality range as the supporting factor showed the average support for Annelida life i.e the current velocity 0.16 - 0.61 m/s, the temperature 25.5 - 31oC, DO 3-7.2 mg/l, pH 7.77 - 8.44 and BOD5 0.5 - 3.1 mg/l. The analysis environmental pollution condition of Badung River and Mati River with Annelida as bioindicator by using ABC method showed that were medium contaminated.

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“…Marchese & Brinkhurst (1996) found that a higher rate of cocoon production was achieved at 30°C, and a larger number of juveniles per cocoon at 25°C. Among cocoon cultures, at this temperature, full embryonic development and subsequent hatching take nearly three weeks (Nascimento & Alves 2008;Lobo & Alves 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Sexual maturity was reached in approximately 35 days, with an average daily growth of 0.58 mg.day -1 (Marchese & Brinkhurst 1996). After becoming sexually mature, the organisms lay an average of 0.17 cocoons.day -1 (Ducrot et al 2007), during two yearly egg-laying cycles lasting approximately 20 weeks each (Ducrot et al 2007;Lobo & Alves 2011). Life expectancy for this species remains unclear but is estimated to lie between 18 (Aston 1968) and 36 months (Ducrot et al 2007).…”

Section: Introductionmentioning

confidence: 99%

<strong><em>Branchiura sowerbyi</em> Beddard, 1892 (Oligochaeta: Naididae) as a test species in ecotoxicology bioassays: a review</strong>

Lobo¹,

Espíndola²

2014

Zoosymposia

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Branchiura sowerbyi (Oligochaeta; Naididae; Rhyacodrilinae) is an oligochaete with great potential to be used as a testspecies in toxicology bioassays. Since 1950, its life cycle has been studied and nowadays it is well described in the literature. B. sowerbyi has a cosmopolitan distribution and can be found in places where Tubifex tubifex (normally used in toxicity bioassays) does not occur, especially in tropical regions. Due to its high individual biomass, B. sowerbyi is suitable for use in bioaccumulation bioassays. The present study reviews papers that have used this species in toxicology bioassays and were published between 1950 and the first semester of 2012. In the first part, a brief overview is provided of the biology and the life-cycle parameters of B. sowerbyi. In the second part, the bioassays are presented and discussed, and in the third and last part, conclusions about research to date and perspectives about future studies are presented. Throughout the investigation, it was possible to find a total of 30 papers that tested approximately 65 different substances (insecticides, metals, industrial chemicals and others). The majority of the bioassays run are 96-h acute water-only tests, only five were chronic bioassays and two involved bioaccumulation. The lack of research and the small number of tested substances in comparison with the standardized T. tubifex species (i.e. approximately 9 and 44 tested metals for B. sowerbyi and T. tubifex, respectively) can be explained by the absence of a bioassay protocol for B. sowerbyi, causing researchers to choose other species. It is necessary to undertake more methodological research in order to find a better and common methodology for bioassays.

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Reproductive cycle of Branchiura sowerbyi (Oligochaeta: Naididae: Tubificinae) cultivated under laboratory conditions

Cited by 8 publications

References 29 publications

Influence of body weight and substrate granulometry on the reproduction of Limnodrilus hoffmeisteri (Oligochaeta: Naididae: Tubificinae)

Influence of body weight and substrate granulometry on the reproduction of Limnodrilus hoffmeisteri (Oligochaeta: Naididae: Tubificinae)

Status Pencemaran Lingkungan Sungai Badung dan Sungai Mati di Provinsi Bali Berdasarkan Bioindikator Phylum Annelida

<strong><em>Branchiura sowerbyi</em> Beddard, 1892 (Oligochaeta: Naididae) as a test species in ecotoxicology bioassays: a review</strong>

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