Effect of temperature increase on fertilization, embryonic development and larval survival of the sea urchin Toxopneustes roseus in the Mexican south Pacific

Mejía-Gutiérrez, Leobarda Margarita; Benítez‐Villalobos, Francisco; Díaz-Martínez, Julia Patricia

doi:10.1016/j.jtherbio.2019.05.011

Cited by 9 publications

(6 citation statements)

References 31 publications

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“…All of the above makes it difficult to clearly explain the reasons for the occurrence of trioecy in this species; however, certain aspects of its early development are known that could indicate the factors behind the development of this reproductive mating system in the pink sea urchin. In recent experiments carried out with gametes, larvae, and embryos of a population of T. roseus from the same area as our study, it was found that the increase in temperature above the normal values of its habitat has a deleterious effect on the success of early development 60 . There exists experimental evidence that at an increase of temperature to 32 °C, which is 2 °C above the maximum values registered in the study area, fertilization occurred at a very low percentage.…”

Section: Discussionsupporting

confidence: 54%

“…There exists experimental evidence that at an increase of temperature to 32 °C, which is 2 °C above the maximum values registered in the study area, fertilization occurred at a very low percentage. There was also a deleterious effect on embryos, resulting in abnormal development and the lowest percentage of larval survival also occurred at 32 °C 60 . The same kind of experiments has been performed on other species from the study area, such as the irregular sea urchin Ryncholampas pacificus and the intertidal Echinometra vanbrunti .…”

Section: Discussionmentioning

confidence: 99%

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Trioecy is maintained as a time-stable mating system in the pink sea urchin Toxopneustes roseus from the Mexican Pacific

Díaz-Martínez

Mejía-Gutiérrez

Islas-Villanueva

et al. 2022

Sci Rep

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Trioecy is a sexual system that consists of the co-occurrence of females, males and hermaphrodites in a population and is common in plants; however, in animals it is uncommon and poorly understood. In echinoderms, trioecy had never been recorded until now. Frequencies of females, males, and hermaphrodites were evaluated and gametogenic development was histologically characterized in a population of Toxopneustes roseus inhabiting the Mexican Pacific. Trioecy in this population is functional and temporally stable, since the three sexes coexisted in each sampling month. The hermaphrodites presented similar gametogenic development as the females and males and participated during the spawning season, contributing to the population’s reproductive process. Trioecy is considered an evolutionarily transitory state, and it is extremely difficult to explain its presence in a species. We hypothesize that continuous ocean warming represents a threat to the survival of this population of T. roseus, since its early developmental stages, which represent a population bottleneck, are more vulnerable to high temperatures than other sea urchins inhabiting the area, while its population density is significantly lower. These conditions generate a strongly stressed environment, which is the determining factor that maintains the stability of trioecy in the species in which it has been studied.

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Section: Discussionsupporting

confidence: 54%

Section: Discussionmentioning

confidence: 99%

Trioecy is maintained as a time-stable mating system in the pink sea urchin Toxopneustes roseus from the Mexican Pacific

Díaz-Martínez

Mejía-Gutiérrez

Islas-Villanueva

et al. 2022

Sci Rep

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“…For example, adult Strongylocentrotus intermedius urchins that were pre‐exposed to elevated seawater temperature produced offspring which had reduced larval length, width, post‐oral arm length/body rod length as well as increased percentage of abnormal larvae (Zhao et al, 2018 ). The tropical urchin Toxopneustes rosseus produced embryos with more than 90% developmental abnormalities and subsequent high mortality rates after exposure to elevated temperatures (Margarita Mejía‐Gutiérrez et al, 2019 ). Other echinoderms have also demonstrated physical trade‐offs in response to prior thermal stress regimes.…”

Section: Discussionmentioning

confidence: 99%

Live‐fast‐die‐young: Carryover effects of heatwave‐exposed adult urchins on the development of the next generation

Minuti

Byrne

Campbell

et al. 2022

Global Change Biology

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“…Studies have investigated the effects of various environmental factors, such as light (Belleza et al, 2012), temperature (Byrne et al, 2009;Abdul Wahab et al, 2016;Mejía-Gutiérrez et al, 2019;Ding et al, 2020), and metal content in a waterbody (Bielmyer et al, 2005;Bonaventura et al, 2018;Di Natale et al, 2019), on the embryonic development and behavior of sea urchins. For light, studies have predominantly employed natural light and UV light in their experiments, and few of them have included light with different wavelengths in the experiments.…”

Section: Discussionmentioning

confidence: 99%

Embryo Development and Behavior in Sea Urchin (Tripneustes gratilla) Under Different Light Emitting Diodes Condition

Hsieh

et al. 2021

Front. Mar. Sci.

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This study aims to evaluate the effect of light-emitting diodes (LEDs) of different wavelengths on the embryonic development, covering behavior, righting behavior, and phototaxis of collector urchins (Tripneustes gratilla). The collector urchins were divided into three groups according to the type of LED illumination they received: full-spectrum (400–750 nm wavelength), red light (630 nm), or blue light (450 nm). The results of the embryonic development experiment indicated that the blue LED group had the highest proportion of embryos reaching the prism stage at the 24th hour and the highest proportion of embryos entering the 4-arm pluteus stage, but it also had the highest death rate at the 48th hour. The full-spectrum and red LED groups exhibited similar speeds of embryonic development. In the experiment on covering behavior performed on adult urchins, our findings indicated that the blue LED group gripped the most acrylic sheets for cover, exhibiting the most covering behavior, followed by the full-spectrum group and then the red LED group. Moreover, behavior varied with coloration, as collector urchins with a lower level of melanin exhibited more covering behavior than those with a higher melanin level. In addition, the righting behavior experiments demonstrated that the blue LED group spent the longest time righting themselves. It is possible that the relatively strong stimulation from the blue LED illumination led to a higher level of stress in the collector urchins and hence slowed their righting. The phototaxis experiment revealed the most significant negative phototactic response in collector urchins when they were under the blue LED light, followed by the full-spectrum light; the red LED light did not induce any positive or negative phototactic response in the collector urchins. This experimental result verified collector urchins’ high sensitivity to and dislike of the blue LED light. The study results confirmed that the blue LED light environment accelerated the embryonic development of collector urchins; however, the relatively strong stimulation from that light also caused them to engage in covering behavior or move away from the light. These results indicate that short-wavelength irradiation significantly affects the embryonic development and behavior pattern of this species.

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Effect of temperature increase on fertilization, embryonic development and larval survival of the sea urchin Toxopneustes roseus in the Mexican south Pacific

Cited by 9 publications

References 31 publications

Trioecy is maintained as a time-stable mating system in the pink sea urchin Toxopneustes roseus from the Mexican Pacific

Trioecy is maintained as a time-stable mating system in the pink sea urchin Toxopneustes roseus from the Mexican Pacific

Live‐fast‐die‐young: Carryover effects of heatwave‐exposed adult urchins on the development of the next generation

Embryo Development and Behavior in Sea Urchin (Tripneustes gratilla) Under Different Light Emitting Diodes Condition

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