{"id":199643,"date":"2021-03-11T17:45:08","date_gmt":"2021-03-11T14:45:08","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/warming-oceans-mean-smaller-baby-sharks-struggle-to-survive-2\/"},"modified":"2021-03-11T17:45:08","modified_gmt":"2021-03-11T14:45:08","slug":"warming-oceans-mean-smaller-baby-sharks-struggle-to-survive-2","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/warming-oceans-mean-smaller-baby-sharks-struggle-to-survive-2\/","title":{"rendered":"#Warming oceans mean smaller baby sharks struggle to survive"},"content":{"rendered":"

“#Warming oceans mean smaller baby sharks struggle to survive<\/strong>”<\/p>\n

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PORTLAND, Maine \u2014 The warming of worldwide oceans from climate change means baby sharks are at risk of being born smaller and without the energy they need to survive, a group of scientists has found.<\/p>\n

The scientists, who conducted the work in connection with the New England Aquarium, studied epaulette sharks, which live off Australia and New Guinea. They found that warmer conditions sped up the sharks\u2019 growing process and that meant they hatched from eggs earlier and were born exhausted.<\/p>\n

The study has implications for other sharks, including those that give birth to live young, said John Mandelman, vice president and chief scientist of the Anderson Cabot Center for Ocean Life at the New England Aquarium. The scientists published their\u00a0findings\u00a0<\/a>in the journal Scientific Reports earlier this year.<\/p>\n

\u201cThere\u2019s this perception they are very hardy. What it means is this very resilient species is more vulnerable than we thought and this could be true of other sharks,\u201d Mandelman said. \u201cWe need to be especially vigilant about managing them under these changing conditions.\u201d<\/p>\n

\"In
In this February 2019 photo provided by the New England Aquarium, scientist Carolyn Wheeler holds a baby epaulette shark in Quincy, Mass. Scientists found that warmer conditions sped up the sharks\u2019 growing process, and that meant they hatched from eggs earlier and were born exhausted.<\/figcaption>
AP<\/span><\/figcaption><\/figure>\n

The scientists performed the work by using the aquarium\u2019s breeding program for the sharks. They raised 27 of the sharks under either average summer conditions, or about 81 degrees Fahrenheit (27 degrees Celsius), or in temperatures predicted for later in the century, including about 84 degrees Fahrenheit (29 Celsius) and about 88 degrees Fahrenheit (31 Celsius).<\/p>\n

They found that the sharks reared in the warmest temperatures weighed significantly less than those raised in average temperatures and they exhibited reduced metabolic performance. The group wrote that epaulette sharks are well known among scientists for their hardiness, so the negative impacts of warming raises a troubling question: \u201cIf epaulette sharks cannot cope with, in this case, thermal stress, how will other, less tolerant species fare?\u201d<\/p>\n

Epaulette sharks are small bottom-dwelling sharks that can grow to be about 3 feet (1 meter) long. Harmless to humans, they\u2019re named for large spots above their pectoral fins that resemble military shoulder ornaments. The sharks are listed as stable and a species of \u201cleast concern\u201d on the International Union for Conservation of Nature Red List of Threatened Species.<\/p>\n

The situation is not so rosy for sharks worldwide. One\u00a0study<\/a>\u00a0this year found that worldwide abundance of oceanic sharks and rays dropped more than 70 percent between 1970 and 2018. Overfishing is a chief concern and climate change and pollution also threaten sharks.<\/p>\n

\"Scientists
Scientists found that the sharks reared in the warmest temperatures weighed significantly less than those raised in average temperatures, and they exhibited reduced metabolic performance.\u00a0<\/figcaption>
AP<\/span><\/figcaption><\/figure>\n

The sharks in the epaulette study survived, but those raised in warmer temperatures emerged in poor shape to make it for long in the wild, said lead study author Carolyn Wheeler, a PhD candidate at the University of Massachusetts Boston and at the ARC Centre of Excellence for Coral Reef Studies at James Cook University in Australia.<\/p>\n

\u201cIf they are smaller and they\u2019re hatching undernourished, they are probably going to have to start looking for food sooner \u2014 and they\u2019re going to have less time to adjust to their surroundings,\u201d Wheeler said.<\/p>\n

The findings shed light on the growing problem of how climate change will affect marine species, said Juan Rubalcaba, a postdoctoral fellow at McGill University and a published marine science<\/a> researcher who was not involved with the shark study. The sharks grew very fast, but to an ultimately smaller size, which is a problem for survival, he said.<\/p>\n

\u201cThis is a very general<\/a> pattern happ<\/a>ening not only in sharks, but in many other fish,\u201d Rubalcaba said.<\/p>\n

\"Rima
Rima Jabado, a marine scientist and shark researcher pulls up a baby spottail shark from the water for the tagging off the Dubai coast, United Arab Emirates. Jabado has spent the last three years visiting docks around the United Arab Emirates and the fish markets of Dubai, chatting with fishermen and asking them about sharks. What she hears from all of them, she says, is that shark stocks have dropped drastically in the warm waters offshore in the Gulf.<\/figcaption>
AP<\/span><\/figcaption><\/figure>\n

The study should serve as a warning to ocean regulatory agencies that conservative management is needed to prevent losing more sharks, said Mariah Pfleger, marine scientist at conservation group Oceana.<\/p>\n

\u201cThis study further exemplifies that sharks will not be immune to a warming ocean,\u201d Pfleger said. \u201cWe need to know how climate change will impact species\u2019 range, life history traits and survivability in order to protect these already vulnerable species.\u201d\n <\/p><\/div>\n

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“#Warming oceans mean smaller baby sharks struggle to survive” PORTLAND, Maine \u2014 The warming of worldwide oceans from climate change means baby sharks are at risk of being born smaller and without the energy they need to survive, a group of scientists has found. The scientists, who conducted the work in connection with the New…<\/p>\n","protected":false},"author":1,"featured_media":199644,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/nypost.com\/wp-content\/uploads\/sites\/2\/2021\/03\/baby-sharks-warming-waters-4.jpg?quality=90&strip=all&w=1200","fifu_image_alt":"","footnotes":""},"categories":[70897],"tags":[97194,43485,10595,70783,74506],"class_list":["post-199643","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-3-11-21","tag-climate-change","tag-environment","tag-ocean","tag-sharks"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/199643","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=199643"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/199643\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/199644"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=199643"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=199643"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=199643"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}