Invertebrate Reproduction & Development

ISSN: 0792-4259 (Print) 2157-0272 (Online) Journal homepage: https://www.tandfonline.com/loi/tinv20

Temporal variation in larval biochemical condition at hatching of the red monodon (: ) from Humboldt Current System

Victoria Seguel, Fabián Guzmán, Miguel Bascur, Rodrigo Riera & Ángel Urzúa

To cite this article: Victoria Seguel, Fabián Guzmán, Miguel Bascur, Rodrigo Riera & Ángel Urzúa (2019) Temporal variation in larval biochemical condition at hatching of the red squat lobster Pleuroncodes￿monodon (Decapoda: Munididae) from Humboldt Current System, Invertebrate Reproduction & Development, 63:4, 282-293, DOI: 10.1080/07924259.2019.1647471 To link to this article: https://doi.org/10.1080/07924259.2019.1647471

Published online: 28 Jul 2019.

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Full Terms & Conditions of access and use can be found at https://www.tandfonline.com/action/journalInformation?journalCode=tinv20 INVERTEBRATE REPRODUCTION & DEVELOPMENT 2019, VOL. 63, NO. 4, 282–293 https://doi.org/10.1080/07924259.2019.1647471

Temporal variation in larval biochemical condition at hatching of the red squat lobster (Decapoda: Munididae) from Humboldt Current System Victoria Seguela, Fabián Guzmána,b, Miguel Bascurc, Rodrigo Rieraa and Ángel Urzúaa,b aDepartamento de Ecología, Facultad de Ciencias, Universidad Católica de la Santísima Concepción, Concepción, Chile; bCentro de Investigación en Biodiversidad y Ambientes Sustentables (CIBAS), Universidad Católica de la Santísima Concepción, Concepción, Chile; cPrograma de Magíster en Ecología Marina, Universidad Católica de la Santísima Concepción, Concepción, Chile

ABSTRACT ARTICLE HISTORY Environmental variables are pivotal factors for the condition of marine invertebrate species with Received 29 May 2019 a complex life cycle, influencing larval biochemical composition, and therefore, indirectly affect- Accepted 19 July 2019 fi ing later benthic stages. We herein explore the physiological responses of the shery resource the KEYWORDS red squat lobster (Pleuroncodes monodon) under contrasting environmental conditions of sea- Reproduction; lipids; water surface temperature and planktonic food availability in the Humboldt Current System proteins; fatty acids; energy (HCS), through the analysis of larval condition and its consequences in the HCS. Larval condition content; was measured as dry weight, biochemical composition and fatty acids profile at hatching during ‘late summer’ (i.e. March) and ‘early winter’ (i.e. June). Larvae hatching from larger eggs produced in winter months showed a higher size, dry weight and a higher content of bioenergetic fuel (i.e. lipids and essential fatty acids) compared to those from larvae hatching in summer months. Temperature and food availability can to be key driving factors favouring an evolution of temporal variability in larval condition of the red squat lobster. These physiological adaptations provide an extension of the reproductive period of P. monodon, specifically planktonic larval development during ‘early winter’, characterized by a period with restricted food availability and lower temperatures than ‘late summer’.

Introduction environmental conditions, with varying sizes depending on different occurring conditions (Bernado 1996). A vast A high proportion of marine benthic invertebrates shows number of papers have dealt with the adaptive adjust- complex life cycles, with several stages from egg to adult ment of offspring size depending on environmental con- (Marshall and Keough 2006). Most of these species show ditions (e.g. Gibson and Chia 1995;Giménez2006;Thatje a pattern that takes place in the plankton and the and Hall 2016). benthos, with a transfer from one to the other through Planktonic stages of marine invertebrates are an ontogenic transformation – metamorphosis (Bhaud exposed to seasonal environmental variations, i.e. food and Duchêne 1996). Regardless of the degree of complex- availability, temperature and oceanographic processes ity, the abundance of adults is mainly limited by mortality (O´Connor et al. 2007; Wernberg et al. 2012). These rates of initial stages, i.e. eggs, larvae and juveniles variations are marked in temperate latitudes, with (D’Urban et al. 2014). Thus, offspring size has strong warm waters in summer and cold waters in winter; effects on subsequent performance across a range of therefore, need to adapt their reproductive marine species and appears to be a pivotal source of peaks to oceanographic conditions in order to maxi- carry-over effects (Marshall and Keough 2005). Generally, mize their fecundity (Pörtner and Gutt 2016). Most of larger offspring perform in a better way than smaller ones, these species tend to reproduce in warmer months, i.e. at least in species with a single life-history stage (Marshall spring and summer seasons (Hiscock et al. 2004; Lardies et al. 2003). However, mothers need to balance the ben- and Wehrtmann 2010) or throughout the year, as efits of producing larger offspring with the energy cost of reported for a number of temperate species (Urzúa fecundity (Smith and Fretwell 1974; Sun et al. 2015). et al. 2012; Guzmán et al. 2016). Thus, females of Furthermore, the relationship between offspring size these species need to adjust offspring size when and energetic costs are inherently influenced by local

CONTACT Ángel Urzúa [email protected] Departamento de Ecología, Facultad de Ciencias, Universidad Católica Ssma. Concepción, Alonso de Ribera, Concepción 2850, Chile © 2019 Informa UK Limited, trading as Taylor & Francis Group