The influence of sediment grain size on burrowing, growth and metabolism of Donax trunculus L. (Bivalvia: Donacidae)

Huz, R. de la; Lastra, Mariano; López, J.

doi:10.1016/s1385-1101(02)00108-9

Cited by 102 publications

(52 citation statements)

References 23 publications

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“…However, similar or higher values have been reported in other sites, such as in the Island of Oléron (Ansell & Lagardère, 1980) and the bay of Douarnenez (Guillou & Le Moal, 1980) in France, in Spain (Ramón et al, 1995;De la Huz et al, 2002) and in the Marmara Sea, Turkey (Deval, 2009;Çolakoğlu & Tokaç, 2011;Çolakoğlu, 2014). The estimated maximum age for the Echatt and Sidi Salem populations using the indirect method of Bhattacharya (1967) showed that D. trunculus in the Gulf of Annaba can live up to 3 years.…”

Section: Discussionsupporting

confidence: 78%

Population dynamics and secondary production of Donax trunculus (Mollusca, Bivalvia) in the Gulf of Annaba (Northeast Algeria)

Hafsaoui

Draredja²,

Lasota

et al. 2016

Medit. Mar. Sci.

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The population dynamics and secondary production of the wedge clam Donax trunculus were studied in the Gulf of Annaba (Northeast Algeria) monthly for one year at a site close to the Annaba port and the Seybouse river, affected by industrial and agricultural pollution (Sidi Salem), and at a site more distant from major pollution sources, but exploited by fishery (Echatt). The number of individuals (N) was lower at Sidi Salem (36–148 ind m-2) than at Echatt (63–272 ind m-2) in most sampling dates, while the biomass was more variable from one date to another, with no consistent pattern of differences between sites. The condition index (CI), although slightly higher at Sidi Salem than at Echatt, showed at both sites a major increase in March/April, June/July and October, reflecting two main periods of gonads development and increase in the level of stored reserves at the end of the reproductive period. Consistently, the recruitment of D. trunculus ran from April to October with a major peak of abundance in spring and a minor one in early fall. The maximum age of D. trunculus was 3 years and the growth rate was highest in the first year. Annual somatic production (P) was lower at Sidi Salem (0.773 g AFDM m-2 yr-1) than at Echatt (1.262 g AFDM m-2 yr-1), possibly reflecting a lower mean annual biomass at Sidi Salem (1.642 AFDM m-2) than at Echatt (3.046 AFDM m-2), while the annual P/B ratio was similar between the two sites (i.e. 0.471 and 0.414 yr-1, respectively). Lower N and P at Sidi Salem compared to Echatt are consistent with the proximity of Sidi Salem to the industrial port of Annaba and low hydrodynamic conditions which may favor the accumulation of pollutants, such as hydrocarbons. On the other hand, moderate secondary production of D. trunculus at Echatt compared to other Mediterranean sites may be due to excessive harvesting. We suggest that the low secondary production described in this study should be taken into account for the development of sustainable strategies of clam exploitation in the Gulf of Annaba. In particular, effort should be made to reduce land-based pollution and to regulate the collection of D. trunculus according to the life cycle and production potential of this species.

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Section: Discussionsupporting

confidence: 78%

Population dynamics and secondary production of Donax trunculus (Mollusca, Bivalvia) in the Gulf of Annaba (Northeast Algeria)

Hafsaoui

Draredja²,

Lasota

et al. 2016

Medit. Mar. Sci.

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“…At the population level, the Habitat Harshness Hypothesis (HHH: Defeo et al 2003) predicts that the harsh environment in reflective beaches forces organisms to invest more energy in maintenance than in reproduction and growth, result-ing in lower abundance, fecundity, growth and survival rates than in dissipative beaches. In agreement with SEH and HHH predictions, studies conducted worldwide have shown a consistent decrease in community (McLachlan 1990, Defeo et al 1992, McLachlan et al 1993, Jaramillo et al 2000, Soares 2003, Rodil & Lastra 2004, McLachlan & Dorvlo 2005 and population (truly intertidal species: Nel et al 2001, de la Huz et al 2002, Contreras et al 2003, Celentano & Defeo 2006, Delgado & Defeo 2008, Thompson & Sánchez De Bock 2009 indicators from dissipative to reflective beaches (but see Herrmann 2009).…”

Section: Introductionmentioning

confidence: 58%

“…In agreement with SEH and HHH predictions, studies conducted worldwide have shown a consistent decrease in community (McLachlan 1990, Defeo et al 1992, McLachlan et al 1993, Jaramillo et al 2000, Soares 2003, Rodil & Lastra 2004, McLachlan & Dorvlo 2005 and population (truly intertidal species: Nel et al 2001, de la Huz et al 2002, Contreras et al 2003 In relation to the patterns found at the population level, it has been postulated that post-settlement processes prevent intertidal species from establishing populations on reflective beaches. Moreover, it has been hypothesized that dissipative beaches can act as 'source' habitats, whereas reflective beaches would constitute 'sink' habitats where reproduction patterns of resident species are insufficient to balance mortality.…”

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confidence: 56%

Effects of morphodynamic and estuarine gradients on the demography and distribution of a sandy beach mole crab: implications for source–sink habitat dynamics

Celentano¹,

Gutiérrez²,

Defeo³

2010

Mar. Ecol. Prog. Ser.

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Several conceptual models relating biological and morphodynamic variables have been developed in sandy beach ecology. On estuarine sandy beaches, a major environmental factor influencing macrofaunal distribution is salinity. In this setting, the concurrent role of large-scale estuarine and morphodynamic gradients in shaping demographic patterns is still uncertain. To explain largescale variations in demographic aspects of the mole crab Emerita brasiliensis, 16 Uruguayan sandy beaches distributed along the estuarine gradient generated by the Rio de la Plata were characterized in terms of beach morphology, sediment traits and salinity over a 2 yr period. Abundance (total and discriminated by reproductive and recruitment components), biomass and body size of E. brasiliensis significantly increased from estuarine reflective to oceanic dissipative beaches. Further, generalized models (both additive and linear) showed that salinity, mean grain size and swash width were the most important explanatory factors of spatio-temporal variations in abundance. Sexually mature individuals and megalopae were almost absent in estuarine and oceanic reflective beaches, whereas oceanic dissipative beaches showed polymodal size structures with fully represented population components, together with extended reproductive and recruitment periods. We conclude that (1) morphodynamic and estuarine gradients are inextricably linked, affecting mole crab demography; and (2) estuarine and oceanic reflective beaches operate as sink habitats where populations do not prosper, whereas oceanic dissipative beaches act as source habitats. We thus provide empirical support to the source-sink hypothesis recently developed for sandy beaches. These long-term variations in demographic processes should be complemented by connectivity studies and genetic analyses in order to gain a deeper understanding of metapopulation dynamics in sandy beaches.KEY WORDS: Mole crab · Emerita · Demography · Salinity · Sandy beaches · Morphodynamics · Generalized additive models 398: 193-205, 2010 ing in lower abundance, fecundity, growth and survival rates than in dissipative beaches. In agreement with SEH and HHH predictions, studies conducted worldwide have shown a consistent decrease in community (McLachlan 1990, Defeo et al. 1992, McLachlan et al. 1993, Jaramillo et al. 2000, Soares 2003, Rodil & Lastra 2004, McLachlan & Dorvlo 2005 and population (truly intertidal species: Nel et al. 2001, de la Huz et al. 2002, Contreras et al. 2003 In relation to the patterns found at the population level, it has been postulated that post-settlement processes prevent intertidal species from establishing populations on reflective beaches. Moreover, it has been hypothesized that dissipative beaches can act as 'source' habitats, whereas reflective beaches would constitute 'sink' habitats where reproduction patterns of resident species are insufficient to balance mortality. This has been called the 'source-sink hypothesis' for intertidal sandy beach populations (Defeo & McLac...

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“…Rating systems for beach types (Short and Wright 1983) and beach exposure (McLachlan 1980) were used for a variety of previous studies investigating sandy beaches with contrasting morphodynamics (e.g. Souza and Gianuca 1995;Calliari et al 1996;Gómez and Defeo 1999;Ricciardi and Bourget 1999;Jaramillo et al 2000;Nel et al 2001;Veloso and Cardoso 2001;de la Huz et al 2002;Defeo and Martínez 2003;Laudien et al 2003;Brazeiro 2005;Celentano and Defeo 2006;Delgado and Defeo 2007;Schlacher and Thompson 2008;Herrmann et al 2009b). Due to the ability to absorb wave energy, the sandy beach ecosystem is one of the most debitable types of dynamic coastlines.…”

Section: Introductionmentioning

confidence: 99%

Population structure, growth and production of the yellow clam Mesodesma mactroides (Bivalvia: Mesodesmatidae) from a high-energy, temperate beach in northern Argentina

et al. 2010

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The yellow clam Mesodesma mactroides (Bivalvia: Mesodesmatidae) was once the most abundant intertidal species on the Atlantic coast of northern Argentina and an important commercial resource in South America. This study of a population inhabiting the intertidal zone of the sheltered-dissipative sandy beach Santa Teresita documents the species' population biology, including demographic structure, growth and production during December 2004 and December 2006, and adumbrates the critical state of M. mactroides at present. A total of 3,015 M. mactroides were collected and measured, whereas individuals were found with an anterior-posterior shell length between 2 and 64 mm. A von Bertalanffy growth function with an asymptotic length (L ? ) of 85 mm and a growth constant (K) of 0.47 year -1 was established from length-frequency distributions. The longevity of the species is estimated at approximately 6 years, and instantaneous mortality rate was about three times higher than 40 years ago. Besides, this study confirmed that the overall growth performance index (OGP) is habitat-specific and can be used to group M. mactroides and M. donacium from different areas into temperate and upwelling species. Furthermore, OGP is inversely correlated with the latitudinal distribution of Mesodesma populations. The intertidal biomass ranged between 0.06 and 0.07 g AFDM m -2 year -1 . Individual production was observed to be highest at 47 mm length (0.35 g AFDM m -2 year -1 ), and annual production ranged between 0.12 and 0.19 g AFDM m -2 year -1 , resulting in productivity values (P/B) between 1.84 and 2.93. The comparison of the results of the present study with those of growth studies conducted on M. mactroides 40 years ago revealed the following considerable differences in the population structure of M. mactroides, indicating the conservation status of this intertidal bivalve as endangered: (1) present growth rates are faster, but that the maximum length attained has decreased, (2) the numbers of individuals per square metre were many times higher in the past than in the present, (3) bivalves from the present work never reached the 'commercial size' of 60 mm and (4) 40 years ago, the population of M. mactroides was composed of up to three cohorts, whereas in this study, there was only one single cohort visible.

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The influence of sediment grain size on burrowing, growth and metabolism of Donax trunculus L. (Bivalvia: Donacidae)

Cited by 102 publications

References 23 publications

Population dynamics and secondary production of Donax trunculus (Mollusca, Bivalvia) in the Gulf of Annaba (Northeast Algeria)

Population dynamics and secondary production of Donax trunculus (Mollusca, Bivalvia) in the Gulf of Annaba (Northeast Algeria)

Effects of morphodynamic and estuarine gradients on the demography and distribution of a sandy beach mole crab: implications for source–sink habitat dynamics

Population structure, growth and production of the yellow clam Mesodesma mactroides (Bivalvia: Mesodesmatidae) from a high-energy, temperate beach in northern Argentina

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