Revista de Biología Tropical ISSN Impreso: 0034-7744 ISSN electrónico: 2215-2075

OAI: https://revistas.ucr.ac.cr/index.php/rbt/oai
Why pygmy snails lay giant eggs: the kiwi syndrome
Pygmy snails, giant eggs Darwin edit CSC.pdf

Keywords

Punctum pygmaeum, egg size, predation, fecundity, Apteryx.

How to Cite

Monge-Nájera, J. (2020). Why pygmy snails lay giant eggs: the kiwi syndrome. Revista De Biología Tropical, (1), 1–3. https://doi.org/10.15517/rbt.v0i1.43811

Abstract

Some minute land snails lay disproportionally large eggs, and the reason is unknown. A possibility is the “Kiwi Syndrome”, in which natural selection pressures associated with low egg predation, heavy predation of the young, and a minimal viable size for hatchlings, force small females to invest in relatively large offspring at the cost of reduced fecundity.

https://doi.org/10.15517/rbt.v0i1.43811
Pygmy snails, giant eggs Darwin edit CSC.pdf

References

Bain, I. A. (2018). Egg-size variation in North Island brown kiwi (Apteryx mantelli): influences and consequences (thesis). University of Canterbury, New Zealand.

Barrientos, Z. (2000). Population dynamics and spatial distribution of the terrestrial snail Ovachlamys fulgens (Stylommatophora: Helicarionidae) in a tropical environment. Revista de Biología Tropical, 48(1), 71-87.

Baur, B. (1989). Growth and reproduction of the minute land snail Punctum pygmaeum (Draparnaud). Journal of Molluscan Studies, 55(3), 383-387.

Baur, A. (1994). Within-and between-clutch variation in egg size and nutrient content in the land snail Arianta arbustorum. Functional Ecology, 8(5), 581-586.

Baur, B., & Raboud, C. (1988). Life history of the land snail Arianta arbustorum along an altitudinal gradient. The Journal of Animal Ecology, 57(1), 71-87.

Calder, W. A. (1978). The kiwi. Scientific American, 239(1), 132-143.

Finch, C. E. (1994). Longevity, senescence, and the genome. Chicago: University of Chicago Press.

KuźniK-KowalsKa, E., & ProćKów, M. (2016). Reproductive biology and growth of two Vallonia species in laboratory conditions (Gastropoda: Eupulmonata: Valloniidae). Folia Malacologica, 24(4), 265-273.

McLennan, J. A., Potter, M. A., Robertson, H. A., Wake, G. C., Colbourne, R., Dew, L., ... & Reid, J. (1996). Role of predation in the decline of kiwi, Apteryx spp., in New Zealand. New Zealand Journal of Ecology, 20(1), 27-35.

Monge-Nájera, J. (1994). Reproductive trends, habitat type and body characteristics in velvet worms (Onychophora). Revista de Biología Tropical, 42(3), 611-622.

Páll-Gergely, B., Hunyadi, A., Jochum, A., & Asami, T. (2015). Seven new hypselostomatid species from China, including some of the world’s smallest land snails (Gastropoda, Pulmonata, Orthurethra). ZooKeys, 523, 31-62.

Worthy, T., Worthy, J. P., Tennyson, A. J., Salisbury, S. W., Hand, S. J., & Scofield, R. P. (2013). Miocene fossils show that kiwi (Apteryx, Apterygidae) are probably not phyletic dwarves (p. 63-80.). Proceedings of the 8th International Meeting, Society of Avian Palentology and Evolution, Wien, Austria.

Comments

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Copyright (c) 2020 Julián Monge-Nájera

Downloads

Download data is not yet available.