Egg production of two sympatric species of<i>Hyalella</i>Smith, 1874 (Crustacea, Amphipoda, Dogielinotidae) in aquaculture ponds in southern Brazil

Castiglioni, Daniela da Silva; Bond‐Buckup, Georgina

doi:10.1080/00222930902903756

Cited by 13 publications

(15 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A positive size assortative mating was observed in the population of H. bonariensis, i.e., large males paired with large females. This size correlation was also observed in populations of H. pleoacuta and H. castroi (Castiglioni & Bond-Buckup 2009), H. azteca (Wellborn 1995), and H. longistila (Bastos-Pereira & Bueno 2016). Several hypotheses have been proposed to explain this size correlation in mating: loading constraint (Adams & Greenwood 1983); spatial segregation (Birkehead & Clarkson 1980); sexual selection (Ward 1984); guarding time (Elwood et al 1987); microhabitat segregation (Ward & Porter 1993); and physical constraints (Adams & Greenwood 1987;Adams et al 1989;Hatcher & Dunn 1997).…”

Section: Discussionsupporting

confidence: 55%

Reproductive strategies of a population of a freshwater amphipod (Crustacea, Amhipoda, Hyalellidae) from southern Brazil

et al. 2018

View full text Add to dashboard Cite

The aim of this study was to characterize the reproductive strategies of a population of Hyalella bonariensis from southern Brazil. Pairing success, reproductive period of males and females, fecundity, and body size at the onset of reproduction were evaluated. Animals were sampled four times (August 2012, October 2012, January 2013, and April 2013) with the 250 µm-mesh dip net during 20 minutes by only one person. In the field, precopulatory pairs and ovigerous females were individualized. In the laboratory, cephalothorax length (CL) were measured and eggs and juveniles were removed from the females' marsupium and counted. The mean CL of paired males and females was significantly higher than that of non-paired males and females. A sexual dimorphism in body size was observed in the population - both paired and non-paired males were larger than females. Probably larger males have a higher probability of losing females during precopulatory behavior. A significant correlation was observed between the size of paired males and females - larger males often paired with larger females and smaller males paired with smaller females (r = 0.81). The pairing success of males increased with body size and we can assume that males from all size classes are able to find mates. The pairing success of females was independent of body size - paired and non-paired females had similar mean CL. The reproductive success increased with body size in males and females, and was more evident in males. Females from the largest size classes had null reproductive success. The idea that larger females can produce more eggs but might have a lower probability of finding a mate than smaller females was corroborated by our results. Therefore, smaller females have higher pairing success because they are capable of mating with a higher percentage of males. The estimated mean fecundity of H. bonariensis was 17.4 (± 3.89) eggs/juveniles. Our results are similar to those of other species of Hyalella from Brazil.

show abstract

Section: Discussionsupporting

confidence: 55%

Reproductive strategies of a population of a freshwater amphipod (Crustacea, Amhipoda, Hyalellidae) from southern Brazil

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Both mean fecundity and size of ovigerous females increased during winter and early spring, and decreased during summer months. A reduction in fecundity together with a smaller body size of ovigerous females during warmer months of the year have also been reported in H. pleoacuta and H. castroi (Castiglioni and Bond-Buckup 2009). Temperature is considered to be the main factor in the generation of size and fecundity differences in winter and summer amphipod populations.…”

Section: Fecunditymentioning

confidence: 87%

“…Ovigerous females of H. pampeana were collected in most of the months, indicating that reproduction is continuous in this species throughout the year, in agreement with data reported by lopretto (1983) in ponds of the province of Buenos Aires, Argentina. Continuous reproduction has been reported in other Hyalella species that inhabit natural populations in tropical and subtropical temperature regimes (edwards and Cowell 1992, Castiglioni and Bond-Buckup 2009, Bastos-Pereira and Bueno 2016, Ozga and Castiglioni 2017, Torres et al 2015, Castiglioni et al 2016). According to Sainte-Marie (1991), gammaridean populations exhibit reproductive patterns that can be associated with latitude.…”

Section: Population Structure and Recruitmentmentioning

confidence: 89%

Ecological aspects of natural populations of Hyalella pampeana (Crustacea, Amphipoda, Hyalellidae) from the Natural Reserve Island of Martín García (Río de La Plata, Argentina)

Colla

César

2019

An. Acad. Bras. Ciênc.

View full text Add to dashboard Cite

Freshwater amphipods of the genus Hyalella have a great importance in aquatic ecosystems due to their role in matter and energy cycling and its utilization as bioindicators of environmental health. The aim of this work was to analyze relevant population parameters of Hyalella pampeana, such as population density and structure, individual body size, sex ratio, fecundity and recruitment, and to study the possible relation of these parameters to variations in environmental variables. Samples were taken monthly during a one-year period (2006) at three small ponds in the Natural Reserve Island of Martín García, Argentina. The inland aquatic environments showed distinctive physicochemical characteristics, mainly related to pH and conductivity values. Amphipod population density varied among sites and throughout the year, with population peaks during spring, positively correlating with pH values. The operational sex ratio of the total population was almost equal to 1 male: 1 female, displaying seasonal variation. Mean fecundity and mean size of ovigerous females were higher during winter and early spring months than in summer months. The presence of ovigerous females and juveniles in all months indicated that reproduction is continuous during the year for Hyalella, in its natural environment.

show abstract

“…Food availability for adults and for the development of the complete life cycle may be the most important factor influencing reproduction (Sastry, 1983). In the study by Castiglioni and Bond-Buckup (2009) with H. castroi and H. pleocuta from the "Campos de Cima da Serra", fluctuations in reproductive intensities were related to macrophyte cover. Macrophytes are food and shelter for ovigerous females and juveniles and contribute for the species' reproductive success.…”

Section: Population Of Two Freshwater Amphipods From Brazilmentioning

confidence: 94%

Population structure of two freshwater amphipods (Crustacea: Peracarida: Hyalellidae) from southern Brazil

2018

View full text Add to dashboard Cite

show abstract

Egg production of two sympatric species ofHyalellaSmith, 1874 (Crustacea, Amphipoda, Dogielinotidae) in aquaculture ponds in southern Brazil

Cited by 13 publications

References 54 publications

Reproductive strategies of a population of a freshwater amphipod (Crustacea, Amhipoda, Hyalellidae) from southern Brazil

Reproductive strategies of a population of a freshwater amphipod (Crustacea, Amhipoda, Hyalellidae) from southern Brazil

Ecological aspects of natural populations of Hyalella pampeana (Crustacea, Amphipoda, Hyalellidae) from the Natural Reserve Island of Martín García (Río de La Plata, Argentina)

Population structure of two freshwater amphipods (Crustacea: Peracarida: Hyalellidae) from southern Brazil

Contact Info

Product

Resources

About