The University of Southampton
University of Southampton Institutional Repository
Warning ePrints Soton is experiencing an issue with some file downloads not being available. We are working hard to fix this. Please bear with us.

Variable shrimp in variable environments: Reproductive investment within Palaemon varians

Variable shrimp in variable environments: Reproductive investment within Palaemon varians
Variable shrimp in variable environments: Reproductive investment within Palaemon varians
The maternal environment may influence the quantity and quality of resources invested in offspring (per-offspring provisioning) and this trait, in turn, affects larval fitness and may carry-over into early juvenile life. Here, per-offspring investment was measured across three consecutive breeding seasons for the caridean shrimp, Palaemon varians. Egg and hatchling larval dry weight as well as hatchling larval biochemical composition were measured. Results indicate that egg volume is positively correlated with dry weight, but egg volume as a proxy for dry weight should be used with caution. Correlations were identified between per-offspring investment and average breeding season temperature, but the period over which temperature was averaged was important to whether these correlations were positive or negative, highlighting the complexity of identifying environmental influence on phenotypic traits. The most important factor determining offspring size and per-offspring investment was maternal size, which may be influenced by the environment as carapace length varied significantly between breeding seasons. These data demonstrate variation in egg and larval composition, related to maternal size, which will affect early life traits and survivorship for P. varians.
Egg dry weight, Egg volume, Maternal size, Per-offspring investment
0018-8158
469-484
Oliphant, Andrew
a080aa80-9deb-4e70-aadb-7c0b02600735
Thatje, Sven
f1011fe3-1048-40c0-97c1-e93b796e6533
Oliphant, Andrew
a080aa80-9deb-4e70-aadb-7c0b02600735
Thatje, Sven
f1011fe3-1048-40c0-97c1-e93b796e6533

Oliphant, Andrew and Thatje, Sven (2020) Variable shrimp in variable environments: Reproductive investment within Palaemon varians. Hydrobiologia, 848 (2), 469-484. (doi:10.1007/s10750-020-04455-z).

Record type: Article

Abstract

The maternal environment may influence the quantity and quality of resources invested in offspring (per-offspring provisioning) and this trait, in turn, affects larval fitness and may carry-over into early juvenile life. Here, per-offspring investment was measured across three consecutive breeding seasons for the caridean shrimp, Palaemon varians. Egg and hatchling larval dry weight as well as hatchling larval biochemical composition were measured. Results indicate that egg volume is positively correlated with dry weight, but egg volume as a proxy for dry weight should be used with caution. Correlations were identified between per-offspring investment and average breeding season temperature, but the period over which temperature was averaged was important to whether these correlations were positive or negative, highlighting the complexity of identifying environmental influence on phenotypic traits. The most important factor determining offspring size and per-offspring investment was maternal size, which may be influenced by the environment as carapace length varied significantly between breeding seasons. These data demonstrate variation in egg and larval composition, related to maternal size, which will affect early life traits and survivorship for P. varians.

Text
Oliphant and Thatje MS - Accepted Manuscript
Download (1MB)

More information

Accepted/In Press date: 22 October 2020
e-pub ahead of print date: 6 November 2020
Keywords: Egg dry weight, Egg volume, Maternal size, Per-offspring investment

Identifiers

Local EPrints ID: 445366
URI: http://eprints.soton.ac.uk/id/eprint/445366
ISSN: 0018-8158
PURE UUID: 9eba86c9-7830-4bd3-a7db-7e3b82dd6074

Catalogue record

Date deposited: 04 Dec 2020 17:30
Last modified: 26 Nov 2021 05:58

Export record

Altmetrics

Contributors

Author: Andrew Oliphant
Author: Sven Thatje

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×