Different Interspecies Demographic Histories within the Same Locality: A Case Study of Sea Cucumbers, Cuttlefish and Clams in Greek Waters

Konstantinos Feidantsis (), Georgios A. Gkafas, Athanasios Exadactylos, Basile Michaelidis, Alexandra Staikou, Marianthi Hatziioannou, Chrysoula Apostologamvrou, Joanne Sarantopoulou and Dimitris Vafidis
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Konstantinos Feidantsis: Department of Ichthyology and Aquatic Environment, School of Agriculture Sciences, University of Thessaly, Fytokou Str., GR-38445 Volos, Greece
Georgios A. Gkafas: Department of Ichthyology and Aquatic Environment, School of Agriculture Sciences, University of Thessaly, Fytokou Str., GR-38445 Volos, Greece
Athanasios Exadactylos: Department of Ichthyology and Aquatic Environment, School of Agriculture Sciences, University of Thessaly, Fytokou Str., GR-38445 Volos, Greece
Basile Michaelidis: Laboratory of Animal Physiology, Department of Zoology, School of Biology, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
Alexandra Staikou: Department of Zoology, School of Biology, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
Marianthi Hatziioannou: Department of Ichthyology and Aquatic Environment, School of Agriculture Sciences, University of Thessaly, Fytokou Str., GR-38445 Volos, Greece
Chrysoula Apostologamvrou: Department of Ichthyology and Aquatic Environment, School of Agriculture Sciences, University of Thessaly, Fytokou Str., GR-38445 Volos, Greece
Joanne Sarantopoulou: Department of Ichthyology and Aquatic Environment, School of Agriculture Sciences, University of Thessaly, Fytokou Str., GR-38445 Volos, Greece
Dimitris Vafidis: Department of Ichthyology and Aquatic Environment, School of Agriculture Sciences, University of Thessaly, Fytokou Str., GR-38445 Volos, Greece

Sustainability, 2022, vol. 14, issue 21, 1-17

Abstract: Coalescent methods in population genetics aim to detect biodiversity patterns, evolutionary mechanisms, and signatures of historical changes in effective population sizes with respect to the species fidelity. Restriction site-associated DNA sequencing (RADseq) was used to evaluate the population dynamics of invertebrate species within the same localities. New sequencing technologies, such as the ones employed by population genetics, could be used to improve the management and sustainability of marine and aquaculture resources. Sea cucumbers ( Holothuria tubolosa ) showed genetic differentiation patterns favoring limited gene flow between studied areas. Similar results for clams ( Venus verrucosa ) suggest local adaptation and low-dispersal abilities for sessile organisms. On the contrary, cuttlefish ( Sepia officinalis ) exhibited a panmictic pattern, resulting in a single genetic stock in the area. The larvae settlement duration may be responsible for such interspecies variations. Interspecies demographic modeling revealed different environmental pressures of historical events’ signatures with respect to the three invertebrates. Sea cucumbers favor a post-glacial bottleneck event followed by a more recent recovery, whereas cuttlefish favor an expansion before the late glacial maximum. Lastly, clams showed a constant effective population size in the area. The results of historical demographic changes in natural populations provide opportunities for critical evaluation and management in terms of the conservation of the species in the area.

Keywords: Aegean Sea; RAD-sequencing; population genomics; sea cucumber; cuttlefish; clam (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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