Temperature Effects on Growth Performance, Fecundity and Survival of Hippocampus guttulatus
department or school: Science, Faculty of
department or school: Non UBC
department or school: Oceans and Fisheries, Institute for the
data provider: DSpace
identifier citation: Diversity 16 (12): 719 (2024)
contributor: Project Seahorse
creator: Palma, Jorge
creator: Correia, Miguel J.
creator: Leitão, Francisco
creator: Andrade, José Pedro
issued: 2025-01-03T15:46:25Z
issued: 2024-11-25
description: This experiment aimed to determine the temperature limits beyond which seahorse growth and reproduction become suboptimal due to climate change. Four temperatures (16, 20, 24, and 28 °C) were tested to evaluate their effect on juvenile (1–56 days post-parturition (DPP)) and adult (one year old) long-snout seahorses, Hippocampus guttulatus. Additionally, the reproductive performance of adults was observed. Another experiment measured oxygen consumption (MO2) in the same age groups and temperatures. Adults showed significantly higher growth rates at 20 and 24 °C compared to 16 and 28 °C. Adult mortality rates were 0%, 0%, 6.2%, and 62.5% at the respective temperatures. Juvenile growth performance was higher at 20 °C and 24 °C but significantly lower at 16 °C and null at 28 °C, with survival rates of 8%, 62%, 10%, and 0%, respectively. Oxygen consumption increased with temperature, ranging from 106.3 ± 3.1 to 203.3 ± 3.1 μmol O2/g BW/h at 16 °C, and from 127.6 ± 3.5 to 273.3 ± 3.1 μmol O2/g BW/h at 28 °C for adults and 1 DPP juveniles, respectively. The study highlights that juvenile and adult H. guttulatus have narrow thermal boundaries, beyond which reproduction, growth, and survival are seriously affected. Under climate change, the species appears unable to cope, potentially leading to their rapid disappearance.
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/90024
note: Citation: Palma, J.; Correia, M.; Leitão,F.; Andrade, J.P. Temperature Effectson Growth Performance, Fecundityand Survival of Hippocampus guttulatus.Diversity 2024, 16, 719. https://doi.org/10.3390/d16120719Academic Editor: ElenaKupriyanovaReceived: 5 August 2024Revised: 6 November 2024Accepted: 19 November 2024Published: 25 November 2024Copyright: © 2024 by the authors.Licensee MDPI, Basel, Switzerland.This article is an open access articledistributed under the terms andconditions of the Creative CommonsAttribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).ArticleTemperature Effects on Growth Performance, Fecundity andSurvival of Hippocampus guttulatusJorge Palma 1,* , Miguel Correia 2,3 , Francisco Leitão 1 and José Pedro Andrade 11 Centre of Marine Sciences (CCMAR), University of the Algarve, 8005-139 Faro, Portugal;fleitao@ualg.pt (F.L.); jandrade@ualg.pt (J.P.A.)2 Seahorse, Pipefish, and Seadragon Specialist Group, IUCN Species Survival Commission,1196 Gland, Switzerland; m.correia@oceans.ubc.ca3 Project Seahorse, Institute for the Oceans and Fisheries, The University of British Columbia,Vancouver, BC V6T 1Z4, Canada* Correspondence: jpalma@ualg.ptAbstract: This experiment aimed to determine the temperature limits beyond which seahorse growthand reproduction become suboptimal due to climate change. Four temperatures (16, 20, 24, and 28 ◦C)were tested to evaluate their effect on juvenile (1–56 days post-parturition (DPP)) and adult (one yearold) long-snout seahorses, Hippocampus guttulatus. Additionally, the reproductive performance ofadults was observed. Another experiment measured oxygen consumption (MO2) in the same agegroups and temperatures. Adults showed significantly higher growth rates at 20 and 24 ◦C comparedto 16 and 28 ◦C. Adult mortality rates were 0%, 0%, 6.2%, and 62.5% at the respective temperatures.Juvenile growth performance was higher at 20 ◦C and 24 ◦C but significantly lower at 16 ◦C and nullat 28 ◦C, with survival rates …
has type: Article
is shown at: 10.14288/1.0447656
language: eng
peer review status: Reviewed
provider: Vancouver : University of British Columbia Library
publisher: Multidisciplinary Digital Publishing Institute
publisher DOI: 10.3390/d16120719
rights: CC BY 4.0
rights URI: https://creativecommons.org/licenses/by/4.0/
scholar level: Researcher
scholar level: Other
subject: seahorses
subject: Hippocampus guttulatus
subject: temperature
subject: growth
subject: reproduction
subject: oxygen consumption
subject: climate change
type: Text
identifier URI: http://hdl.handle.net/2429/90024