Differential parental nutrient allocation in two congeneric pipefish species (Syngnathidae: Syngnathus spp.)

The Journal of Experimental Biology
Jennifer L Ripley, Christy M Foran

Abstract

Male seahorses and pipefishes of the family Syngnathidae are heralded for their unique brood pouch structures for incubating embryos. There are three general types of brood pouch with increasing complexity: simple ventral gluing, two pouch flaps and a completely sealed sac. The diversity of functional roles within a type in providing nutrition, aeration and protection to offspring is unknown. Here we reveal significant differences in parental nutrient allocation to embryos for two closely related, sympatric pipefishes with similar brood pouch structure. We document differences in embryo attachment, depletion of pouch fluid nutrients over development and egg nutrient partitioning between Syngnathus floridae and Syngnathus fuscus. In S. fuscus, females produce nutritionally poor eggs and the males implant developing embryos in the brood pouch adjacent to blood vessels. A female-biased breeding population was observed, supporting the hypothesis that the cost of male parental care is high in this species. The loose connection between eggs and brood pouch tissues and the appearance of undeveloped eggs and lipid droplets in the pouch of S. floridae males suggest this species utilizes nutrient-rich eggs produced by females as nurse eg...Continue Reading

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Citations

Nov 14, 2008·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·Jennifer L Ripley, Christy M Foran
Nov 20, 2009·Fish Physiology and Biochemistry·Jennifer L Ripley, Christy M Foran
Nov 27, 2009·Proceedings. Biological Sciences·Gry SagebakkenCharlotta Kvarnemo
Feb 13, 2016·Journal of Fish Biology·K A PaczoltA G Jones
May 19, 2009·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Jennifer L Ripley
Sep 4, 2015·Molecular Biology and Evolution·Camilla M WhittingtonAnthony B Wilson
May 28, 2016·Ecology and Evolution·Ines Braga GoncalvesCharlotta Kvarnemo
Aug 2, 2016·Zoology : Analysis of Complex Systems, ZACS·Anne Beemelmanns, Olivia Roth
Jun 1, 2016·PloS One·Gry SagebakkenCharlotta Kvarnemo
Aug 11, 2007·BioEssays : News and Reviews in Molecular, Cellular and Developmental Biology·Kai N Stölting, Anthony B Wilson
Nov 1, 2018·Ecology and Evolution·Kenyon B MobleyBob B M Wong
May 7, 2020·Biological Reviews of the Cambridge Philosophical Society·Camilla M Whittington, Christopher R Friesen
Jul 4, 2020·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·Zoe M G SkalkosCamilla M Whittington
Jun 5, 2015·The Journal of Experimental Biology·Ines Braga GoncalvesCharlotta Kvarnemo

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