Ontogenetic changes in the carapace shape of the non-marine ostracod Eucypris virens (Jurine)

Baltanás, Ángel Luis; Otero, Marina; Arqueros, L.; Rossetti, Giampaolo; Rossi, Valeria

doi:10.1007/978-94-017-1508-9_4

Cited by 25 publications

(30 citation statements)

References 13 publications

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“…A similar phenomenon was described in Daphnia where it was related to stored energy reserve being larger in resting than in non-resting eggs (Arbaciauskas and Lampert, 2003), although the structural difference between the two kind of eggs in Cladocera suggest caution in comparing observations from the two taxa. Differences in body size among generations, as well as between genders, may be linked to variation in competitive ability and may reduce intraspecific competition (Hutchinson, 1967;van Harten, 1983;Baltanás et al, 2000). However, at 16°C (LC) and FT (IC), the mean size of ovigerous females increased in the putative generations II and III.…”

Section: Discussionmentioning

confidence: 99%

Hatching phenology and voltinism of Heterocypris barbara (Crustacea: Ostracoda) from Lampedusa (Sicily, Italy)

2013

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Section: Discussionmentioning

confidence: 99%

Hatching phenology and voltinism of Heterocypris barbara (Crustacea: Ostracoda) from Lampedusa (Sicily, Italy)

2013

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“…This model has been used for the description of somatic growth in littoral tropical cladocerans, different from Daphnia, such as Macrothrix flabelligera; for this latter species, Güntzel et al (2003) report that the VBGE describes adequately the growth in length for individual cultures at 23°C. Yet, for other cladocerans such as freshwater ostracods, the use of simpler models, like exponential models, have also been proposed (Baltanás et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Description of the individual growth of Daphnia magna (Crustacea: Cladocera) through the von Bertalanffy growth equation. Effect of photoperiod and temperature

Martínez‐Jerónimo

2011

Limnology

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Daphnia magna is a cladoceran used as a model organism in aquatic ecology and ecotoxicology studies. Because growth is a critical parameter to study the effect of environmental conditions on the development of zooplankters, the somatic growth of D. magna was measured here and described by the von Bertalanffy growth equation (VBGE), a mathematical model widely used in fisheries management. For this purpose, the effect of two temperatures (20 and 25°C) and two photoperiod conditions (12:12 and 16:8, light:dark) was assayed. Experiments began with neonate females and were finished when parthenogenetic females reached the age of 41 days; they were fed the microalga Ankistrodesmus falcatus (400,000 cell ml -1 , 12 mg l -1 , dry weight). According to the VBGE, maximal length (L max ) was inversely correlated with the growth rate (K). The highest L max (6.45 mm) was for the females grown at 20°C with the 12:12 photoperiod, whereas the maximum growth rate (K = 0.182 ± 0.010) was for individuals grown at 25°C with the 12:12 photoperiod. The number of clutches during the studied period was significantly higher for females grown at 25°C, 12:12. Temperature affected the growth rate and the maximum size in D. magna; interaction of temperature with photoperiod was also noteworthy. The VBGE was a nifty way to assess the effects of the tested environmental factors.

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“…There are also many differences from the other species of Cyprididae, such as the time of laying and the lack of ornamentation of the eggs as well as the position and appearance of limbs (see Roessler, 1983 for Heterocypris bogotensis; Baltanás et al, 2000 andMartens, 2000 for Eucypris virens; Kubanç et al, 2007 for H. salina;Mesquita-Joanes, 2008, 2013 for H. bosniaca).…”

Section: Discussionmentioning

confidence: 99%

“…These changes possibly indicate the remarkable influence of environmental conditions on carapace shape (Baltanás et al, 2000) and also of the temperature range on carapace size (Marín, 1984;Latifa, 1987).…”

Section: Discussionmentioning

confidence: 99%

Postembryonic development of nonmarine ostracod Chlamydotheca arcuata (Sars, 1901) (Crustacea: Ostracoda), reared in the laboratory

Díaz¹,

Lopretto²

2017

Turk J Zool

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We describe here 8 instars (from A-8 through A-1) of the postembryonic development of the Cyprididae Chlamydotheca arcuata (Sars, 1901) from hatching to sexually mature individuals. To study the development of this species, cultures of adult parthenogenetic female specimens were established and maintained in the laboratory. The ostracod specimens were collected from temporary ponds and streams in Buenos Aires Province, Argentina. This report provides a description of the chaetotaxy of each limb along with detailed illustrations. Photographs of eggs and carapaces were taken using scanning electron microscopy. The complete development of Chlamydotheca arcuata lasted between 80 and 90 days. In the first instars, the active swimmers are characterized by carapaces that have a greater height in front of the first half of the maximum length and taper toward the rear end to become pointed. The appearance and numbers of the sensory setae on the carapace increase in the latest instars.

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Ontogenetic changes in the carapace shape of the non-marine ostracod Eucypris virens (Jurine)

Cited by 25 publications

References 13 publications

Hatching phenology and voltinism of Heterocypris barbara (Crustacea: Ostracoda) from Lampedusa (Sicily, Italy)

Hatching phenology and voltinism of Heterocypris barbara (Crustacea: Ostracoda) from Lampedusa (Sicily, Italy)

Description of the individual growth of Daphnia magna (Crustacea: Cladocera) through the von Bertalanffy growth equation. Effect of photoperiod and temperature

Postembryonic development of nonmarine ostracod Chlamydotheca arcuata (Sars, 1901) (Crustacea: Ostracoda), reared in the laboratory

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