Population dynamics of <i>Caprella dilatata</i> and <i>Caprella equilibra</i> (Peracarida: Amphipoda) in a Southwestern Atlantic harbour

Velazquez, Samira Nuñez; Rumbold, Carlos; Obenat, Sandra

doi:10.1080/17451000.2017.1317101

Cited by 8 publications

(4 citation statements)

References 49 publications

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“…The variety of sizes recorded for ovigerous females in this study has already been observed for Caprella equilibra and Caprella dilatata Krøyer, 1843 in a study conducted in Argentina (Nuñez-Velazquez et al 2017) and for C. equilibra from an estuarine population on the northern coast of Italy (Sconfietti and Luparia 1995). This pattern indicates that all three species in our study have an iteroparous life cycle, i.e.…”

Section: Population Structure Of the Caprellids Associated With Sargassumsupporting

confidence: 84%

“…Studies conducted in temperate regions indicated different peaks in reproductive activity. In Mar del Plata harbour (Argentina), higher densities of C. equilibra ovigerous females were recorded in summer (Nuñez-Velazquez et al 2017) and in European (Mediterranean Sea) C. equilibra populations the breeding period occurs in spring and autumn at moderate temperatures and stops in winter (Sconfietti and Luparia 1995). Periodic or more intense reproduction in certain periods of the year seems to characterize the species of Caprella studied, with reproductive peaks coinciding with the coldest months of the year.…”

Section: Temporal Dynamics Of the Caprellids Associated With Sargassummentioning

confidence: 90%

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Population biology of sympatric species of Caprella (Amphipoda: Caprellidae) in a tropical algal bed

Paula

Cunha

Garcia

et al. 2021

scimar

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The population biology of the three sympatric species of caprellids (Caprella danilevskii, C. equilibra and C. scaura) associated with a Sargassum bed was studied in the northern coast of São Paulo state, Brazil. Samplings were carried out monthly from October 2010 to February 2012. In each month, 25 fronds of Sargassum were randomly collected through snorkelling. The caprellids were identified, counted, classified by sex and separated into size classes. Caprella danilevskii was the most abundant species, with 14939 specimens recorded. The body size of males was larger than that of females for C. danilevskii and C. equilibra, and the sex ratio was skewed toward males for all species. The size-frequency distribution was polymodal for C. danilevskii and C. scaura and bimodal for C. equilibra. Mature males of C. scaura and C. equilibra were recorded in all size classes. The last size classes (from 8.3–9.4 to 12.7–13.8 mm) were dominated by mature males. Mature and ovigerous females were more frequent in intermediate size classes. Significant temporal variations were recorded for the three species with higher densities in spring and summer that are related to higher algal biomass; but other environmental factors are certainly important for explaining caprellid density variation.

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Section: Population Structure Of the Caprellids Associated With Sargassumsupporting

confidence: 84%

Section: Temporal Dynamics Of the Caprellids Associated With Sargassummentioning

confidence: 90%

Population biology of sympatric species of Caprella (Amphipoda: Caprellidae) in a tropical algal bed

Paula

Cunha

Garcia

et al. 2021

scimar

View full text Add to dashboard Cite

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“…Most information published on caprellids is related to taxonomical papers, including descriptions of new taxa (e.g., Guerra-García, 2003) and inventory of species (e.g., De-La-Ossa-Carretero et al, 2010). Studies involving population and reproductive biology are still particularly scarce (Prato et al, 2013;De Paula et al, 2016;Nuñez-Velazquez et al, 2017). Population structure data are particularly important providing basic information about ecological stability of populations, including seasonal abundance, population size structure, birth rates and mortality (Hutchinson, 1981;Santos et al, 1995).…”

Section: Biology Of Two Caprellid Species Associated To Sargassummentioning

confidence: 99%

Population and reproductive biology of two caprellid species (Crustacea: Amphipoda) associated to Sargassum cymosum (Phaeophyta: Fucales) on the southeast coast of Brazil

2019

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Caprellid amphipods are common crustaceans at Sargassum beds of southeastern Brazil and constitute an important link between primary producers and marine consumers. The goal of this study is to evaluate population and reproductive biology of two caprellid species: Paracaprella tenuis Mayer, 1903 and Pseudaeginella montoucheti Quitete, 1971. Sargassum cymosum Agardh, 1820 samples were collected monthly between October 2010 and September 2011 in a rock shore in southeastern Brazil. The caprellids were identified, counted, measured and classified as males, immature females, sexually mature females, ovigerous females and juveniles. Eggs were counted and measured. Higher densities of P. tenuis and P. montoucheti were found mainly in winter and lower densities in fall and summer. Density variation is probably related to organic matter supply and substrate availability. Both species showed continuous reproduction with reproductive peaks. Pseudaeginella montoucheti larger egg volume indicates a longer incubation period. The egg volume was directly related to female size. The number of eggs was weakly related to female size, indicating that fecundity may be driven by other factors, such as the physiological conditions. Sex ratio deviated for males suggests a higher longevity of males. The present study highlighted important data of two caprellids species that occur in algal beds of different regions.

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“…Bousfield and Hoover (1997) suggested that it most probably originated in the eastern North Atlantic: France, Belgium and England. It has been recorded in Argentina (Albano et al 2013;Schwindt et al 2014, Rumbold et al 2016Nuñez Velazquez et al 2017), Chile (Thiel and Hinojosa 2009), Australia (Chilton 1921;Hayes et al 2005), New Zealand (Chilton 1921), Japan (Irie 1956;Hirayama 1995), South Africa (Barnard 1916), the Pacific coasts of North America (Wasson et al 2001;Ruiz et al 2011), and Black Sea, North Pacific Ocean, Indian Ocean, Eastern and South China Seas (Molnar et al 2008). Other authors have suggested that it is cryptogenic (crypt-, Greek, Kryptos, secret; -genic, Latin, genic, origin), as species that is not demonstrably native or introduced (Carlton 1996) in Brazil (Neves et al 2007;Neves and Rocha 2008), Atlantic Europe (UK to Portugal) (Noël 2011), and the east and northwest coasts of the USA (Ruiz et al 2011).…”

Section: Distributionmentioning

confidence: 99%

DNA barcode, taxonomic and ecological notes for the identification of the invasive amphipodMonocorophium acherusicum(Costa, 1851)

Albano

Rumbold

Chiesa

et al. 2018

New Zealand Journal of Marine and Freshwater Research

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We report the occurrence of the invasive amphipod Monocorophium acherusicum in Mar del Plata port, Argentina, using morphological and molecular analysis and estimated mean abundance to detect monthly variations of this population. We compared M. acherusicum morphology with that of M. insidiosum and Crassicorophium bonelli, the two most similar locally occurring species, to establish the diagnostic characteristics for the correct identification of them; moreover, we provide some taxonomic notes about others corophiids regionally distributed. M. acherusicum were collected in a subtidal biofouling community and its mean abundance was maximum in summer. In the molecular analysis, the maximumlikelihood tree showed that specimens from Mar del Plata were clustered with M. acherusicum specimens from GenBank and Boldsystems. We support and confirm the species identity in Mar del Plata port using DNA barcoding and with taxonomic methods.

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Population dynamics of Caprella dilatata and Caprella equilibra (Peracarida: Amphipoda) in a Southwestern Atlantic harbour

Cited by 8 publications

References 49 publications

Population biology of sympatric species of Caprella (Amphipoda: Caprellidae) in a tropical algal bed

Population biology of sympatric species of Caprella (Amphipoda: Caprellidae) in a tropical algal bed

Population and reproductive biology of two caprellid species (Crustacea: Amphipoda) associated to Sargassum cymosum (Phaeophyta: Fucales) on the southeast coast of Brazil

DNA barcode, taxonomic and ecological notes for the identification of the invasive amphipodMonocorophium acherusicum(Costa, 1851)

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