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The effects of salinity on the density, shell size and survival of a mangrove gastropod: laboratory and field evidence

Published online by Cambridge University Press:  28 July 2015

Rafaela Camargo Maia*
Affiliation:
Laboratório de Ecologia de Manguezais, Instituto Federal de Educação, Ciência e Tecnologia do Ceará, Campus Acaraú, Avenida Desembargador Armando de Sales Louzada, s/n, CEP 62580-000 Acaraú – CE, Brazil
Ricardo Coutinho
Affiliation:
Departamento de Oceanografia, Divisão de Biotecnologia Marinha, Instituto de Estudos do Mar Almirante Paulo Moreira, Arraial do Cabo, RJ, CEP: 28930-000, Brazil
*
Correspondence should be addressed to:R.C. Maia, Laboratório de Ecologia de Manguezais, Instituto Federal de Educação, Ciência e Tecnologia do Ceará, Campus Acaraú, Avenida Desembargador Armando de Sales Louzada, s/n, CEP 62580-000, Acaraú – CE, Brazil Email: [email protected]

Abstract

The macro-detritivore gastropod Melampus coffeus plays an important role in energy transfer in neotropical mangroves and, because it consumes tree leaves, it may be a potential ecological indicator of degraded mangrove areas. The objective of this study was to analyse the spatial-temporal distribution and population dynamics parameters of M. coffeus in mangroves and correlate environmental variables with population density, shell morphology and survival. Samples were collected monthly in two mangrove forests with different salinities, located on the north-eastern coast of Brazil. Height, width and aperture height of the animals’ shell were measured. The effects of salinity on population density and size distribution in M. coffeus were evaluated in field and laboratory experiments. The results showed that populations of M. coffeus present low density and are composed of large individuals during the dry season in both mangrove forests. These populations are denser and show predominance of small individuals during the rainy season when salinity decreases. The results obtained in the experiments confirm the observations in the field. Animals at extreme sizes (small and large) subjected to different salinity treatments over a moderate period showed higher mortality rates than individuals of intermediate size.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 2015 

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References

REFERENCES

Apley, M.L. (1970) Field study on life history, gonadal cycle and reproductive periodicity in Melampus bidentatus (Pulmonata: Ellobiidae). Malacologia 10, 381397.Google Scholar
Britton, J.C. (1992) Evaporative water loss, behaviour during emersion, and upper thermal tolerance limits in seven species of eulittoral-fringe Littorinidae (Mollusca: Gastropoda). Third International Symposium on Littorinidae Biology, pp. 6983.Google Scholar
Burnham, B.H. and Fell, P.E. (1989) Distribution of Melampus bidentatus (Say) and Succinea wilsoni (Lea) within a tidal marsh in eastern Connecticut. Nautilus 103, 109112.Google Scholar
DHN – Diretoria de Hidrografia e Navegação – Porto do Pecém. (2007, 2008 & 2009) http://www.mar.mil.br Google Scholar
Fell, P.E., Murphy, K.A., Peck, M.A. and Recchia, M.L. (1991) Re-establishment of Melampus bidentatus (Say) and other macroinvertebrates on a restored impounded tidal marsh: comparison of populations above and below the impoundment dike. Journal of Experimental Marine Biology and Ecology 152, 3348.Google Scholar
Fell, P.E. and Williams, J.H. (1985) Distribution of the snail, Melampus bidentatus, and the mussel, Geukensia demissa, along the Pataguanset estuary (Connecticut) in relation to salinity and other tidal marsh invertebrates. Nautilus 99, 2128.Google Scholar
FUNCEME – Fundação Cearense de Meteorologia e Recursos Hídricos – Posto de Acaraú. (2007, 2008 & 2009). http://www.funceme.br Google Scholar
Herjanto and Thomas, M.L.H. (1995) Population characteristics of Melampid and Littorinid snails in three mangrove-dominated sites of Bermuda. Caribbean Journal of Science 31, 274280.Google Scholar
Iacarella, J.C. and Helmuth, B. (2011) Experiencing the salt marsh environment through the foot of Littoraria irrorata: behavioral responses to thermal and desiccation stresses. Journal of Experimental Marine Biology and Ecology 409, 143153.Google Scholar
Iacarella, J.C. and Helmuth, B. (2012) Body temperature and desiccation constrain the activity of Littoraria irrorata within the Spartina alterniflora canopy. Journal of Thermal Biology 37, 1522.Google Scholar
Joyce, A.A. and Weisberg, S.B. (1986) The effects of predation by the mummichog, Fundulus heteroclitus (L.) on the abundance and distribution of the salt marsh snail, Melampus bidentatus (Say). Journal of Experimental Marine Biology and Ecology 100, 295306.Google Scholar
Kerwin, J.A. (1972) Distribution of the salt marsh snail (Melampus bidentatus Say) in relation to marsh plants in the Poropotank River area, Virginia. Chesapeake Science 13, 150153.Google Scholar
Lee, S. and Silliman, B.R. (2006) Competitive displacement of a marsh detritivore. Journal of Experimental Marine Biology and Ecology 339, 7585.Google Scholar
Lugo, A.E., Brown, S. and Brinson, M.M. (1988) Forested wetlands in freshwater and salt-water environments. Limnology and Oceanography 33, 894909.Google Scholar
Maia, R.C. and Coutinho, R. (2012) Structural characteristics of mangrove forests in Brazilian estuaries: a comparative study. Revista de Biología Marina y Oceanografía 47, 8798.Google Scholar
Maia, R.C. and Coutinho, R. (2013) The influence of mangrove structure on the spatial distribution of Melampus coffeus (Gastropoda: Ellobiidae) in Brazilian estuaries. Pan-American Journal of Aquatic Sciences 8, 2129.Google Scholar
Maia, R.C., Rocha-Barreira, C.C. and Coutinho, R. (2012) Reproductive cycle and embryonic development of the gastropod Melampus coffeus (Linnaeus, 1758) (Ellobiidae) in the Brazilian Northeast. Brazilian Journal of Biology 72, 935943.Google Scholar
Maia, R.C. and Tanaka, M.O. (2007) Avaliação de efeitos locais de espécies de mangue na distribuição de Melampus coffeus (Gastropoda, Ellobiidae) no Ceará, Nordeste do Brasil. Iheringia Série Zoologia 97, 379382.Google Scholar
Martins, A.M. de F. (1996a) Relationships within the Ellobiidae. In Taylor, J.D. (ed.) Origin and evolutionary radiation of the mollusca. London: Oxford University Press, pp. 285294.Google Scholar
Martins, A.M. de F. (1996b) Anatomy and systematics of the western Atlantic Ellobiidae (Gastropoda: Pulmonata). Malacologia 37, 163332.Google Scholar
Martins, A.M. de F. (2001) Ellobiidae – lost between land and sea. Journal of Shellfish Research 20, 441466.Google Scholar
Mcmahon, R.F. (2001) Acute thermal tolerance in intertidal gastropods relative to latitude, superfamily, zonation and habitat with special emphasis on the Littorinoidea. Journal of Shellfish Research 20, 459467.Google Scholar
Mcmahon, R.F. and Russell–Hunter, W.D. (1981) The effects of physical variables and acclimation on survival and oxygen consumption in the high littoral salt-marsh snail, Melampus bidentatus Say. Biological Bulletin 161, 246269.CrossRefGoogle Scholar
Price, C.H. (1980) Water relations and physiological ecology of the salt marsh snail, Melampus bidentatus Say. Journal of Experimental Marine Biology and Ecology 45, 5167.Google Scholar
Proffitt, C.E. and Devlin, D.J. (2005) Grazing by the intertidal gastropod Melampus coffeus greatly increases mangrove leaf litter degradation rates. Marine Ecology Progress Series 296, 209218.Google Scholar
Proffitt, C.E., Johns, K.M., Cochrane, C.B., Devlin, D.J., Reynolds, T.A., Payne, D.L., Jeppesen, S., Peel, D.W. and Linden, D. (1993) Field and laboratory experiments on the consumption of mangrove leaf litter by the macrodetritivore Melampus coffeus L. (Gastropoda: Pulmonata). Biological Sciences 56, 211222.Google Scholar
Roach, A.C. and Lim, R.P. (2000) Variation in the population dynamics of the intertidal pulmonate gastropod Salinator solida Martens (Gastropoda: Amphibolidae) at Towra Point, NSW, Australia. Wetlands Ecology and Management 8, 5369.Google Scholar
Russell-Hunter, W.D., Apley, M.L. and Hunter, R.D. (1972) Early life-history of Melampus and the significance of semilunar synchrony. Biological Bulletin 143, 625656.Google Scholar
Schaeffer-Novelli, Y., Molero, G.C., Adaime, R.R. and Camargo, T.M. (1990) Variability of mangrove ecosystems along the Brazilian coast. Estuaries 13, 204218.Google Scholar
Spelke, J.A., Fell, P.E. and Helvenston, L.L. (1995) Population structure, growth and fecundity of Melampus bidentatus (Say) from two regions of a tidal marsh complex in Connecticut. Nautilus 108, 4247.Google Scholar
Staikou, A.E. (1998) Aspects of life cycle, population dynamics, growth and secondary production of the pulmonate snail Cepaea vindobonensis (Férussac, 1821) in northern Greece. Journal of Molluscan Studies 64, 297308.Google Scholar
Staikou, A.E., Lazaridou-Dimitriadou, M. and Pana, E. (1990) The life cycle, population dynamics, growth and secondary production of the snail Bradybaena fruticum (Müller, 1774) (Gastropoda Pulmonata) in northern Greece. Journal of Molluscan Studies 56, 137146.Google Scholar
Tablado, A. and Gappa, J.L. (2001) Morphometric diversity of the pulmonate limpet Siphonaria lesson in different coastal environments. Scientia Marina 65, 3341.Google Scholar
Tanaka, M.O. and Maia, R.C. (2006) Shell morphological variation of Littoraria angulifera among and within mangroves in NE Brazil. Hydrobiologia 559, 192202.Google Scholar
Underwood, A.J. (1997) Experiments in ecology – their logical design and interpretation using analysis of variance. New York, NY: Cambridge University Press.Google Scholar
Underwood, A.J. and Barrett, G. (1990) Experiments on the influence of oysters on the distribution, abundance and size of the gastropod Bembicium auratum in a mangrove swamp in New South Wales, Australia. Journal of Experimental Marine Biology and Ecology 137, 2545.Google Scholar