Pachyoliva columellaris G.B. Sowerby I, 1825 (Olividae, Caenogastropoda) in Peru: tidal migrations and population density: tidal migrations and population density
The gastropod Pachyoliva columellaris (formerly Olivella columellaris) is particularly common on many sandy beaches in North Peru. In the studied region north of Paita, Piura province, the species reaches densities of over 80000 individuals per beach meter. The snails perform tidal migrations throughout the lunar cycle although tidal amplitudes differ four-fold between neap and spring tide. Not all animals complete their tidal migrations, and significant numbers remain above the water line at low tide. Throughout the tidal cycle, the proportion of small individuals is increased near the water line whereas large animals dominate in lower beach zones. I conclude that the sandy beaches north of Paita are well-suited for further studies of P. columellaris and the mechanisms underlying tidal migrations in invertebrates.
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Universidad Nacional Mayor de San Marcos, Facultad de Ciencias Biológicas
2023
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oai:ojs.csi.unmsm:article249952023-09-16T05:58:18Z Pachyoliva columellaris G.B. Sowerby I, 1825 (Olividae, Caenogastropoda) in Peru: tidal migrations and population density: tidal migrations and population density Pachyoliva columellaris G.B. Sowerby I, 1825 (Olividae, Caenogastropoda) en Peru: migraciones mareales y densidad de población Peters, Winfried population density sandy beach suspension feeding tidal migration underwater sailing locomotion Densidad de población playa arenosa alimentación suspensívora migracion mareal navegación a vela bajo agua The gastropod Pachyoliva columellaris (formerly Olivella columellaris) is particularly common on many sandy beaches in North Peru. In the studied region north of Paita, Piura province, the species reaches densities of over 80000 individuals per beach meter. The snails perform tidal migrations throughout the lunar cycle although tidal amplitudes differ four-fold between neap and spring tide. Not all animals complete their tidal migrations, and significant numbers remain above the water line at low tide. Throughout the tidal cycle, the proportion of small individuals is increased near the water line whereas large animals dominate in lower beach zones. I conclude that the sandy beaches north of Paita are well-suited for further studies of P. columellaris and the mechanisms underlying tidal migrations in invertebrates. El gasterópodo Pachyoliva columellaris (antes Olivella columellaris) es particularmente común en las playas arenosas del norte de Perú. En la región estudiada al norte de Paita, provincia de Piura, la especie alcanza densidades de más de 80000 individuos por metro de playa. Los caracoles realizan migraciones mareales durante todo el ciclo lunar, aunque las amplitudes de marea difieren cuatro veces entre la marea muerta y la marea viva. No todos los animales completan sus migraciones mareales y un número significativo permanece por encima del nivel del agua en marea baja. Durante todo el ciclo de marea, la proporción de individuos pequeños aumenta cerca del nivel del agua, mientras que los animales grandes dominan en las zonas bajas de la playa. Concluyo que las playas arenosas al norte de Paita son apropiadas para estudios adicionales de P. columellaris y los mecanismos de las migraciones de marea en invertebrados. Universidad Nacional Mayor de San Marcos, Facultad de Ciencias Biológicas 2023-09-15 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article info:eu-repo/semantics/article application/pdf https://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/24995 10.15381/rpb.v30i3.24995 Revista Peruana de Biología; Vol. 30 No. 3 (2023); e24995 Revista Peruana de Biología; Vol. 30 Núm. 3 (2023); e24995 1727-9933 1561-0837 eng https://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/24995/19911 10.15381/rpb.v30i3.24995.g19911 Derechos de autor 2023 Winfried Peters https://creativecommons.org/licenses/by/4.0 |
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Perú |
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America del Sur |
| libraryname |
Biblioteca de la Facultad de Ciencias Biológicas |
| language |
eng |
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Digital |
| author |
Peters, Winfried |
| spellingShingle |
Peters, Winfried Pachyoliva columellaris G.B. Sowerby I, 1825 (Olividae, Caenogastropoda) in Peru: tidal migrations and population density: tidal migrations and population density |
| author_facet |
Peters, Winfried |
| author_sort |
Peters, Winfried |
| title |
Pachyoliva columellaris G.B. Sowerby I, 1825 (Olividae, Caenogastropoda) in Peru: tidal migrations and population density: tidal migrations and population density |
| title_short |
Pachyoliva columellaris G.B. Sowerby I, 1825 (Olividae, Caenogastropoda) in Peru: tidal migrations and population density: tidal migrations and population density |
| title_full |
Pachyoliva columellaris G.B. Sowerby I, 1825 (Olividae, Caenogastropoda) in Peru: tidal migrations and population density: tidal migrations and population density |
| title_fullStr |
Pachyoliva columellaris G.B. Sowerby I, 1825 (Olividae, Caenogastropoda) in Peru: tidal migrations and population density: tidal migrations and population density |
| title_full_unstemmed |
Pachyoliva columellaris G.B. Sowerby I, 1825 (Olividae, Caenogastropoda) in Peru: tidal migrations and population density: tidal migrations and population density |
| title_sort |
pachyoliva columellaris g.b. sowerby i, 1825 (olividae, caenogastropoda) in peru: tidal migrations and population density: tidal migrations and population density |
| description |
The gastropod Pachyoliva columellaris (formerly Olivella columellaris) is particularly common on many sandy beaches in North Peru. In the studied region north of Paita, Piura province, the species reaches densities of over 80000 individuals per beach meter. The snails perform tidal migrations throughout the lunar cycle although tidal amplitudes differ four-fold between neap and spring tide. Not all animals complete their tidal migrations, and significant numbers remain above the water line at low tide. Throughout the tidal cycle, the proportion of small individuals is increased near the water line whereas large animals dominate in lower beach zones. I conclude that the sandy beaches north of Paita are well-suited for further studies of P. columellaris and the mechanisms underlying tidal migrations in invertebrates. |
| publisher |
Universidad Nacional Mayor de San Marcos, Facultad de Ciencias Biológicas |
| publishDate |
2023 |
| url |
https://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/24995 |
| work_keys_str_mv |
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