Growth and Reproduction in Two Brackish Water Populations of Orchestia gammarellus (Amphipoda: Talitridae) in the Baltic Sea

Persson, Lars-Eric

doi:10.2307/1549546

Cited by 32 publications

(31 citation statements)

References 13 publications

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“…This typically characterizes bivoltin life cycles, involving iteroparous females (Table 2), which contrasts with the univoltin life cycle observed farther to the north, in the British Isles (Williams, 1978). The same plasticity was found in the life cycles from talitrid species-for instance, Orchestia gammarellus may vary from bivoltin, in the Baltic (Persson, 1999) to multivoltin in a sewage treatment works in Britain (Jones & Wigham, 1993)-and appears to be a common feature among amphipods that may eventually play a role in speciation processes (see Wildish, 1982).…”

Section: Growth and Life Cyclementioning

confidence: 93%

“…In this regard, data on T. saltator are fully consistent with the pattern of geographical variation known among other talitrid species. For instance, Orchestia gammarellus reproduces from May to September, in the Baltic (Persson, 1999(Persson, , 2001, and from April to August in southwestern British Isles (Cornwall) (Jones & Wigham, 1993). Closer to the equator, talitrids tend to reproduce through the year, e.g.…”

Section: Recruitment and Sex Ratiomentioning

confidence: 99%

“…A sex ratio favourable to females appears to be the most common situation among talitrid populations, e.g. in Orchestia gammarellus (Jones & Wigham, 1993;Persson, 1999), Peudorchestoidea brasiliensis (Cardoso & Veloso, 1996), or Talitrus saltator (Williams, 1978). The reason for this sex ratio is unclear.…”

Section: Recruitment and Sex Ratiomentioning

confidence: 99%

“…Nevertheless, there are no comprehensive studies of strandline talitrids in this respect, and the contribution of this group to the energy of beach ecosystems is still poorly understood. In fact, there are few studies on the reproductive biology and population dynamics of talitrids (Hartog, 1963;Jones & Wigham, 1993;Marsden, 1991a;Palluault, 1954;Persson, 1999;Van Senus, 1988;Williams, 1978;Williamson, 1951a), and even less on secondary production (e.g. Cardoso & Veloso, 1996;Van Senus & McLachlan, 1986).…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Talitrus saltator (Amphipoda, Talitridae) biology, dynamics, and secondary production in Atlantic (Portugal) and Mediterranean (Italy and Tunisia) populations

Marques

Gonçalves

Pardal

et al. 2003

Estuarine, Coastal and Shelf Science

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Talitrus saltator biology, population dynamics, and reproduction were studied more or less simultaneously at three sand beaches: Lavos, on the western coast of Portugal; Collelungo, on the Italian coast of the Thyrrenian Sea; and Zouara, on the northern coast of Tunisia. The species exhibited a consistent pattern of aggregated distribution. Densities were higher at Lavos than at Collelungo and Zouara. Reproduction took place from early March to late September at Lavos and Collelungo, and from late February to early November at Zouara. The average sex ratio was favourable to males at Lavos and Collelungo, and to females at Zouara. Based on data from Lavos, the population abundance was positively correlated with temperature, while the percentage of juveniles in the population was positively correlated with temperature and sediment moisture. Adult individuals from the Atlantic population were larger than the Mediterranean ones, while newborn individuals from the Mediterranean were slightly larger than Atlantic ones. Life span was estimated at 7-11 months at Lavos, 6-9 months at Collelungo, and 6-8 months at Zouara. Cohorts born at the beginning of the reproductive period tend to have shorter lives than the ones born later in the season, with longer life spans occurring in cohorts that crossed the winter to breed in the next year. The minimum period necessary for sexual differentiation after birth was estimated at AE4 weeks at Lavos, AE3 weeks at Collelungo, and AE4.5 weeks at Zouara, for males, and AE6 weeks at Lavos, and AE5 weeks at Collelungo and Zouara, for females. The period necessary for female's sexual maturation after being born was estimated at AE10 weeks at Lavos, and AE8 weeks at Collelungo and Zouara. At the studied sites, T. saltator appeared as semiannual species, with iteroparous females appearing to produce at least two broods per year, and exhibited a bivoltine life cycle. Growth production (P) was estimated at 0.74 g m ÿ2 yr ÿ1 ashfree dry weight (AFDW; 17.7 kJ m ÿ2 yr ÿ1 ) at Lavos, 0.12 g m ÿ2 yr ÿ1 AFDW (2.8 kJ m ÿ2 yr ÿ1 ) at Collelungo, and 0.61 g m ÿ2 yr ÿ1 AFDW (14.3 kJ m ÿ2 yr ÿ1 ) at Zouara. Elimination production (E) was estimated at 1.40 g m ÿ2 yr ÿ1 AFDW (33.5 kJ m ÿ2 yr ÿ1 ) at Lavos, 0.20 g m ÿ2 yr ÿ1 AFDW (4.8 kJ m ÿ2 yr ÿ1 ) at Collelungo, and 1.11 g m ÿ2 yr ÿ1 AFDW (26.6 kJ m ÿ2 yr ÿ1 ) at Zouara. The average annual biomass ð B BÞ (standing stock) was estimated at 0.13 g m ÿ2 at Lavos, 0.014 g m ÿ2 at Collelungo, and 0.084 g m ÿ2 at Zouara, resulting in P= B B ratios of 5.7 at Lavos, 8.2 at Collelungo, and 7.3 at Zouara, and E= B B ratios of 10.8 at Lavos, 14.4 at Collelungo, and 13.1 at Zouara. The present results, combined with information from literature, revealed a geographic variation in T. saltator populations with regard to their morphological characteristics, growth rates, life spans, and life cycles.

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Section: Growth and Life Cyclementioning

confidence: 93%

Section: Recruitment and Sex Ratiomentioning

confidence: 99%

Section: Recruitment and Sex Ratiomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Comparison of Talitrus saltator (Amphipoda, Talitridae) biology, dynamics, and secondary production in Atlantic (Portugal) and Mediterranean (Italy and Tunisia) populations

Marques

Gonçalves

Pardal

et al. 2003

Estuarine, Coastal and Shelf Science

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“…Talitrid amphipods are important members of the wrack fauna throughout the world (Persson 1999). Orchestia is a large cosmopolitan genus comprising more than 70 recognised species which are semiterrestrial, typically living amongst intertidal stones and algae, although some are found inland, and may occur several 100 m above sea-level (Lincoln 1979).…”

Section: Introductionmentioning

confidence: 99%

Distribution and population characteristics of the alien talitrid amphipod Orchestia cavimana in relation to environmental conditions in the Northeastern Baltic Sea

Herkül

Kotta

2006

Helgol Mar Res

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The talitrid amphipods were found for the first time in the Northeastern Baltic Sea in 1999. Orchestia cavimana inhabited damp wracks cast up on shore within a 200 m area of Saaremaa Island. In the following year, the species expanded its range to a few kilometres. In 2002, six additional locations of O. cavimana were found in Saaremaa Island and two locations in the Northwestern part of Estonia. Abundances and biomasses were highest in the first year of the invasion. In the following years, the values stabilized on remarkably lower levels. Population characteristics of the species varied significantly between locations. The average biomass and abundance were 9 g dw m À2 and 1975 ind m À2 , respectively. Wrack biomass and interaction between wrack biomass and exposure were the best predictors of the abundances and biomasses of O. cavimana. Humidity explained additional variability in biomasses. The size structure of the population of O. cavimana was mostly related to humidity and wrack biomass. The Southern coast of the Baltic Sea may be regarded as the initial donor region for the Estonian populations of O. cavimana. The vector of this invasion is most likely related to the natural dispersal of the drifting algae but human activities as a transport vector can not be excluded. The incredible speed of the invasion of O. cavimana and its high biomasses indicate that the species will very likely extend its distribution along the coast of the Northeastern Baltic Sea in the following years.

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Dispersal of Platorchestia platensis (Kröyer) (Amphipoda: Talitridae) along Swedish coasts: A Slow but Successful Process

Persson¹

2001

Estuarine, Coastal and Shelf Science

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Growth and Reproduction in Two Brackish Water Populations of Orchestia gammarellus (Amphipoda: Talitridae) in the Baltic Sea

Cited by 32 publications

References 13 publications

Comparison of Talitrus saltator (Amphipoda, Talitridae) biology, dynamics, and secondary production in Atlantic (Portugal) and Mediterranean (Italy and Tunisia) populations

Comparison of Talitrus saltator (Amphipoda, Talitridae) biology, dynamics, and secondary production in Atlantic (Portugal) and Mediterranean (Italy and Tunisia) populations

Distribution and population characteristics of the alien talitrid amphipod Orchestia cavimana in relation to environmental conditions in the Northeastern Baltic Sea

Dispersal of Platorchestia platensis (Kröyer) (Amphipoda: Talitridae) along Swedish coasts: A Slow but Successful Process

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