MEPS 552:177-193 (2016)  -  DOI:

Measuring physiological similarity of closely related littorinid species: a proteomic insight

Arina L. Maltseva1,*, Marina A. Varfolomeeva1, Arseniy A. Lobov1, Natalia A. Mikhailova1,2, Paul E. Renaud3, Alexey V. Grishankov1, Kseniia Y. Volovik1, Andrei I. Granovitch1

1Department of Invertebrate Zoology, St. Petersburg State University, 199034 St. Petersburg, Russia
2Department of Cell Culture, Institute of Cytology, Russian Academy of Sciences, 194064 St. Petersburg, Russia
3Akvaplan-niva AS, Fram Centre, 9296 Tromsø, Norway
*Corresponding author:

ABSTRACT:  During recent years, the role of proteomics in ecology, population biology and evolutionary studies has been growing. It has been used effectively to resolve taxonomic ambiguity in closely related species and for detection of environmental effects on populations. The family Littorinidae (Gastropoda; periwinkles) includes a set of widely distributed species, which are important members of intertidal communities of the coasts around the world. Taxonomic relationships among several species, e.g. within the subgenus Neritrema, are still poorly understood. We explored proteomes of 3 closely related littorinid species (the so called ‘saxatilis’-group: Littorina arcana, L. compressa and L. saxatilis) from different tidal levels of one geographic area. The proteome data were obtained using 2-dimensional difference gel electrophoresis (2D-DIGE) followed by mass spectrometry for protein identification. We showed that L. compressa formed a well-supported clade within the ‘saxatilis’ group, while L. arcana and L. saxatilis had similar proteomes. In contrast to L. compressa, the variable elements in the proteomes of the 2 latter species shifted similarly along the vertical shore gradient. Such proteomic divergence suggests that closely related species may function differently at the physiological level under very similar conditions.

KEY WORDS: Littorina · Littorina saxatilis’ species complex · Cryptic species · Proteomics ·  2D difference gel electrophoresis · 2D-DIGE · Speciation

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Cite this article as: Maltseva AL, Varfolomeeva MA, Lobov AA, Mikhailova NA and others (2016) Measuring physiological similarity of closely related littorinid species: a proteomic insight. Mar Ecol Prog Ser 552:177-193.

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