Effects of Hypoxia on the Distribution of Calanoid Copepod Eggs in the Seabed Sediments of the Eutrophic Masan Bay, Korea

In this study, we investigate the distribution of calanoid copepod eggs in the sediments of Masan Bay (South Sea, Korea), in which hypoxic conditions occur every summer. In August (2011), hypoxia was observed at all stations, while normoxia was observed in April (2012). The pH and hydrogen sulphide...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Seo Yeol Choi, Bonggil Hyun, Pung-Guk Jang, Kyoungsoon Shin, Ho Young Soh, Jung-Hoon Kang, Min-Chul Jang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	copepods egg hatching hypoxic sediments resting egg normoxia Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
Acceso en línea:	https://doaj.org/article/7df65573d4b54275a5aad38bfe389b3c
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:7df65573d4b54275a5aad38bfe389b3c
record_format	dspace
spelling	oai:doaj.org-article:7df65573d4b54275a5aad38bfe389b3c2021-11-11T19:57:47ZEffects of Hypoxia on the Distribution of Calanoid Copepod Eggs in the Seabed Sediments of the Eutrophic Masan Bay, Korea10.3390/w132131162073-4441https://doaj.org/article/7df65573d4b54275a5aad38bfe389b3c2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4441/13/21/3116https://doaj.org/toc/2073-4441In this study, we investigate the distribution of calanoid copepod eggs in the sediments of Masan Bay (South Sea, Korea), in which hypoxic conditions occur every summer. In August (2011), hypoxia was observed at all stations, while normoxia was observed in April (2012). The pH and hydrogen sulphide concentration at the sediment-water interface in the inner bay during August were 7.7 and >20 mol L<sup>−1</sup>, respectively, and there was no significant difference between the stations in April. The abundance of eggs in the sediment ranged from 0.69 to 1.49 × 10<sup>6</sup> eggs m<sup>−</sup><sup>2</sup> in August, and from 0.59 to 1.08 × 10<sup>6</sup> eggs m<sup>−2</sup> in April. Notably, the proportion of abnormal eggs was high (a maximum of 77.1%) in August, and a uniform distribution of normal eggs (>80%) was observed in April. A generation of abnormal eggs hatched with deformed nauplii in Masan Bay during the summer, and a failure to hatch was likely due to the high H<sub>2</sub>S concentration and low pH caused by hypoxia. In this paper, we discuss the effects of hypoxia and seabed environments on the hatching success of calanoid copepod eggs.Seo Yeol ChoiBonggil HyunPung-Guk JangKyoungsoon ShinHo Young SohJung-Hoon KangMin-Chul JangMDPI AGarticlecopepodsegg hatchinghypoxic sedimentsresting eggnormoxiaHydraulic engineeringTC1-978Water supply for domestic and industrial purposesTD201-500ENWater, Vol 13, Iss 3116, p 3116 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	copepods egg hatching hypoxic sediments resting egg normoxia Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
spellingShingle	copepods egg hatching hypoxic sediments resting egg normoxia Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 Seo Yeol Choi Bonggil Hyun Pung-Guk Jang Kyoungsoon Shin Ho Young Soh Jung-Hoon Kang Min-Chul Jang Effects of Hypoxia on the Distribution of Calanoid Copepod Eggs in the Seabed Sediments of the Eutrophic Masan Bay, Korea
description	In this study, we investigate the distribution of calanoid copepod eggs in the sediments of Masan Bay (South Sea, Korea), in which hypoxic conditions occur every summer. In August (2011), hypoxia was observed at all stations, while normoxia was observed in April (2012). The pH and hydrogen sulphide concentration at the sediment-water interface in the inner bay during August were 7.7 and >20 mol L<sup>−1</sup>, respectively, and there was no significant difference between the stations in April. The abundance of eggs in the sediment ranged from 0.69 to 1.49 × 10<sup>6</sup> eggs m<sup>−</sup><sup>2</sup> in August, and from 0.59 to 1.08 × 10<sup>6</sup> eggs m<sup>−2</sup> in April. Notably, the proportion of abnormal eggs was high (a maximum of 77.1%) in August, and a uniform distribution of normal eggs (>80%) was observed in April. A generation of abnormal eggs hatched with deformed nauplii in Masan Bay during the summer, and a failure to hatch was likely due to the high H<sub>2</sub>S concentration and low pH caused by hypoxia. In this paper, we discuss the effects of hypoxia and seabed environments on the hatching success of calanoid copepod eggs.
format	article
author	Seo Yeol Choi Bonggil Hyun Pung-Guk Jang Kyoungsoon Shin Ho Young Soh Jung-Hoon Kang Min-Chul Jang
author_facet	Seo Yeol Choi Bonggil Hyun Pung-Guk Jang Kyoungsoon Shin Ho Young Soh Jung-Hoon Kang Min-Chul Jang
author_sort	Seo Yeol Choi
title	Effects of Hypoxia on the Distribution of Calanoid Copepod Eggs in the Seabed Sediments of the Eutrophic Masan Bay, Korea
title_short	Effects of Hypoxia on the Distribution of Calanoid Copepod Eggs in the Seabed Sediments of the Eutrophic Masan Bay, Korea
title_full	Effects of Hypoxia on the Distribution of Calanoid Copepod Eggs in the Seabed Sediments of the Eutrophic Masan Bay, Korea
title_fullStr	Effects of Hypoxia on the Distribution of Calanoid Copepod Eggs in the Seabed Sediments of the Eutrophic Masan Bay, Korea
title_full_unstemmed	Effects of Hypoxia on the Distribution of Calanoid Copepod Eggs in the Seabed Sediments of the Eutrophic Masan Bay, Korea
title_sort	effects of hypoxia on the distribution of calanoid copepod eggs in the seabed sediments of the eutrophic masan bay, korea
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/7df65573d4b54275a5aad38bfe389b3c
work_keys_str_mv	AT seoyeolchoi effectsofhypoxiaonthedistributionofcalanoidcopepodeggsintheseabedsedimentsoftheeutrophicmasanbaykorea AT bonggilhyun effectsofhypoxiaonthedistributionofcalanoidcopepodeggsintheseabedsedimentsoftheeutrophicmasanbaykorea AT punggukjang effectsofhypoxiaonthedistributionofcalanoidcopepodeggsintheseabedsedimentsoftheeutrophicmasanbaykorea AT kyoungsoonshin effectsofhypoxiaonthedistributionofcalanoidcopepodeggsintheseabedsedimentsoftheeutrophicmasanbaykorea AT hoyoungsoh effectsofhypoxiaonthedistributionofcalanoidcopepodeggsintheseabedsedimentsoftheeutrophicmasanbaykorea AT junghoonkang effectsofhypoxiaonthedistributionofcalanoidcopepodeggsintheseabedsedimentsoftheeutrophicmasanbaykorea AT minchuljang effectsofhypoxiaonthedistributionofcalanoidcopepodeggsintheseabedsedimentsoftheeutrophicmasanbaykorea
_version_	1718431359154782208

Effects of Hypoxia on the Distribution of Calanoid Copepod Eggs in the Seabed Sediments of the Eutrophic Masan Bay, Korea

Ejemplares similares