Effects of global warming on fish reproductive endocrine axis, with special emphasis in pejerrey Odontesthes bonariensis

Miranda, Leandro Andrés; Chalde, Tomás; Elisio, Mariano; Strüssmann, Carlos Augusto

doi:10.1016/j.ygcen.2013.02.034

Cited by 80 publications

(76 citation statements)

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“…High water temperatures reportedly damaged oocyte surfaces and reduced oocyte size via decreased levels of plasma gonadal hormone in the salmon, Salmo salar (King et al 2003). In the pejerrey, Odontesthes bonariensis, elevated temperatures reduced hormone levels in the brainpituitary-gonad axis, leading to gonadal regression and impaired spawning (Miranda et al 2013). Finally, in the European bullhead, Cottus gobio, a 4 C increase in water temperature accelerated oocyte maturation, while an 8 C rise disrupted its maturation (Dorts et al 2012).…”

Section: Discussionmentioning

confidence: 99%

Effects of Water Temperature on Gonad Development in the Cold-Water Fish, Kumgang Fat Minnow <i>Rhynchocypris kumgangensis</i>

Kong

Ghil

2016

CYTOLOGIA

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Summary Water temperature is one of the most important factors in the survival of aquatic organisms. We investigated the effects of increased water temperature on the physiology of Kumgang fat minnow Rhynchocypris kumgangensis, a small cold-water species of freshwater fish that is endemic to Korea. We examined how organ indices and oocyte histology differed by season and exposure to high water temperatures. Fish were collected from streams in Korea during three different seasons, maintained at the same temperatures at which they were collected for three weeks, and then exposed to either control temperatures reflecting the same conditions from which they were collected (15.0 C, August; 7.8 C, November; and 12.3 C, April) or experimental temperatures that were increased a total of 7 C over seven days (to 22.0 C, August; 14.8 C, November; and 19.3 C, April) and maintained at the final temperature for an additional three days. Among the studied organ indices, the gonadosomatic indexes (GSI) in both sexes differed by season, and were significantly decreased by exposure to increased water temperatures during the germ-cell-developing season. The histological features of oocytes also differed by season, and exposure to increased water temperatures during the relevant season markedly attenuated oocyte development. These findings highlight sensitivity of both GSI and oocyte histology on water temperature change, and the possible negative effects of high water temperature on reproduction in Kumgang fat minnow.

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Section: Discussionmentioning

confidence: 99%

Effects of Water Temperature on Gonad Development in the Cold-Water Fish, Kumgang Fat Minnow <i>Rhynchocypris kumgangensis</i>

Kong

Ghil

2016

CYTOLOGIA

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“…In this sense, it is known that vitellogenin plasma levels, the precursor of egg yolk, decreased in fish kept at high water temperatures impairing its reproductive activity (King et al, 2007;Pankhurst & King, 2010;Miranda et al, 2013).…”

Section: Literature Citedmentioning

confidence: 99%

Quality of pejerrey (Odontesthes bonariensis) eggs and larvae in captivity throughout spawning season

Chalde¹,

Elisio²,

Miranda³

2014

Neotrop. ichthyol.

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The aim of this work was to assess the quality of pejerrey eggs and larvae throughout its spawning season. Fertilized eggs were taken on September, October, November, and December from a captive broodstock. The egg diameter, yolk diameter, and oil droplets area decreased along the spawning season, with higher values in September. Fertilization and hatching rates decreased throughout this period, with highest values in September (88.0%; 55.2%) and the lowest values on December (43.0%; 25.2%). The larvae hatched from eggs obtained on October were the heaviest and longest (1.57 mg; 8.24 mm). The survival rate at 30 days post hatching (dph) was similar in larvae from September and October eggs (66.1%; 62.9%) with a sharp decrease in larvae from November and December eggs (22.4%; 23.3%). Furthermore, the highest body weight (15.1 mg) and total length (15.25 mm) at 30 dph were obtained in larvae from October eggs. The results obtained showed that overall eggs quality was better at the beginning of the spawning period, influencing the larvae performance.O objetivo deste trabalho foi avaliar a qualidade de ovos de peixe-rei ao longo do período reprodutivo. Ovos fertilizados foram amostrados em setembro, outubro, novembro e dezembro de reprodutores em cativeiro. O diâmetro do ovo e do vitelo, como também o tamanho das gotículas de óleo diminuíram ao longo do período reprodutivo, com valores maiores em setembro. Taxas de fertilização e eclosão diminuíram ao longo deste período, apresentando valores maiores em setembro (88,0%, 55,2%) e menores em dezembro (43,0%, 25,2%). As larvas eclodidas dos ovos, obtidas em outubro, eram maiores e apresentavam maior peso (8,24 mm; 1,57 mg). A taxa de sobrevivência aos 30 dias pós-eclosão foi maior nos meses de setembro e outubro, apresentando valores similares (66,1%, 62,9%), no entanto, houve uma diminuição acentuada na sobrevivência das larvas de ovos em novembro e dezembro (22,4%, 23,3%). Além disso, o maior peso corporal (15,1 mg) e o comprimento total (15,25 mm) aos 30 dias pós-eclosão foram obtidos a partir de larvas de ovos durante o mês de outubro. Os resultados obtidos mostraram que a qualidade dos ovos em geral foi melhor no início do período reprodutivo, influenciando o desempenho das larvas.

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“…Increases in water temperature cause a decline in swimming and cardiac performance, probably by limiting oxygen diffusion in muscles (Johnston et al, ; Farrell, ; Cai et al, ). Elevated water temperatures may interrupt the completion of vitellogenesis and gonadal development, affect egg quality and survival, cause defects in final maturation, inhibit ovulation (Pankhurst et al, ; King et al, ), and disrupt the release of reproductive hormones (Pankhurst and King, ; Miranda et al, ). In the pejerrey Odontesthes bonariensis , for example, elevated water temperature reduces hormone levels in the brain‐pituitary‐gonad axis, leading to gonadal regression and impaired spawning (Miranda et al, ).…”

mentioning

confidence: 99%

“…Elevated water temperatures may interrupt the completion of vitellogenesis and gonadal development, affect egg quality and survival, cause defects in final maturation, inhibit ovulation (Pankhurst et al, ; King et al, ), and disrupt the release of reproductive hormones (Pankhurst and King, ; Miranda et al, ). In the pejerrey Odontesthes bonariensis , for example, elevated water temperature reduces hormone levels in the brain‐pituitary‐gonad axis, leading to gonadal regression and impaired spawning (Miranda et al, ). The growth rate of coral reef fish is restricted by elevated water temperature, because more energy is required to maintain activities at higher temperatures (Munday et al, ).…”

mentioning

confidence: 99%

Identification of a warm‐temperature acclimation‐associated 65‐kDa protein encoded by a temperature‐ and infection‐responsive gene in the Kumgang fat minnow Rhynchocypris kumgangensis

Kwon

Kong

et al. 2015

J. Exp. Zool.

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Water temperature is one of the most important factors in fish physiology; thus, it is important to identify genes that respond to changes in water temperature. In this study, we identified a warm- temperature acclimation-associated 65-kDa protein (Wap65) in the Kumgang fat minnow Rhynchocypris kumgangensis, a small, cold-freshwater fish species endemic to Korea. Kumgang fat minnow Wap65-1 (kmWap65-1) was cloned using polymerase chain reaction (PCR)-based strategies, and was found to be highly homologous with teleost Wap65-1 and mammalian hemopexin, a heme-binding protein that transfers plasma heme into hepatocytes. kmWap65-1 mRNA was expressed mainly in the liver and its expression levels were significantly increased by both short- and long-term exposure to high temperature, which was evaluated by real-time quantitative PCR. Furthermore, the expression levels of kmWap65-1 were highly elevated by exposure to bacterial lipopolysaccharide. These results indicate that kmWap65-1 expression is associated with environmental stresses such as increases in water temperature and bacterial infection. J. Exp. Zool. 325A:65-74, 2016. © 2015 Wiley Periodicals, Inc.

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Effects of global warming on fish reproductive endocrine axis, with special emphasis in pejerrey Odontesthes bonariensis

Cited by 80 publications

References 80 publications

Effects of Water Temperature on Gonad Development in the Cold-Water Fish, Kumgang Fat Minnow <i>Rhynchocypris kumgangensis</i>

Effects of Water Temperature on Gonad Development in the Cold-Water Fish, Kumgang Fat Minnow <i>Rhynchocypris kumgangensis</i>

Quality of pejerrey (Odontesthes bonariensis) eggs and larvae in captivity throughout spawning season

Identification of a warm‐temperature acclimation‐associated 65‐kDa protein encoded by a temperature‐ and infection‐responsive gene in the Kumgang fat minnow Rhynchocypris kumgangensis

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