Global warming can extinguish male turtles
A new study on common sea turtles of the Atlantic has been stressing the need to preserve the species, since the long-term global warming will end with one of the sexes of these animals to exist only female turtles.We have long known that the reproduction of reptiles is rather sensitive to temperatures, leading to a variation in the ratio of males and females to hatch the eggs. For sea turtles are the key temperature 29 degrees Celsius. If the eggs develop at temperatures higher than this, the turtles that hatch will be mostly females. If temperatures exceed constantly the 30.5 degrees, one of the sexes of sea turtles can be convicted.The short term, this higher ratio of female turtles may be beneficial, since the natural reproduction is enhanced. However, the long term may be harmful and lead to the extinction of the species.According to Graeme Hays, professor at Deakin University and author of the study, the higher temperatures represent a "serious" threat to populations of turtles. "It will be the end of the story if there is no human intervention" indicates.The decline in populations of turtles, powered by heating, is already being observed in the green turtles in the Caribbean and the study reveals that the number of specimens decreased by 1%.Also the increase in the level of sea water caused by melting of ice caps, can have a negative impact on populations of sea turtles. "The increase in the level of the water results in loss of area of the beaches where the turtles lay their eggs, which can also put the species at risk," said Hays.See a selection of photos of sea turtles.. fancybox-wrap {position: absolute; top: 0; left: 0; z-index: 8020; }. fancybox-skin {position: relative; /* margin-top: 20px! important; */background: #222222; color: #74b32e; text-shadow: none; -webkit-border-radius: 2px; -moz-border-radius: 2px; border-radius: 2px; }. fancybox-opened {z-index: 8030;} . fancybox-opened. fancybox-skin {-webkit-box-shadow: 0 10px 25px rgba (0, 0, 0, 0.5); -moz-box-shadow: 0 10px 25px rgba (0, 0, 0, 0.5); box-shadow: 0 10px 25px rgba (0, 0, 0, 0.5); }. fancybox-outer,. fancybox-inner {position: relative;} . fancybox-inner {overflow: hidden;} . fancybox-type-iframe. fancybox-inner {-webkit-overflow-scrolling: touch;} . fancybox-close {background: url('wp-content/themes/codistage/styles/fancybox/exit.png') no-repeat; width: 25px; height: 25px; float: right; margin-top: 10px; margin-right: 5px; }/*. ng-gallery-image img {width: 565px; height: 393px;}*/Tartarugas correm perigo1of 12jQuery (document). ready (function ($) {var thumbContainerWidth = 0, thumbs = Array (), selectedIndex = 1, thumbIndex = 1, imageOffset = 7; $ ('. ng-gallery-thumbnail-box '). each (function () {thumbs.push($(this)); }); /* thumbnail navigation */$ ('. ng-greensavers-thumb-next '). unbind (). bind (' click ', function (e) {e.preventDefault(); if (thumbIndex< == (thumbs.length-imageOffset)) {$ ('. ng-thumbnails-container '). stop (). animate ({left:-$ (thumbs [thumbIndex]). position (). left}); thumbIndex + +; } }); $ ('. ng-greensavers-thumb-prev '). unbind (). bind (' click ', function (e) {e.preventDefault(); if (thumbIndex >1) {$ ('. ng-thumbnails-container '). stop (). animate ({left: $ ('. ng-thumbnails-container '). position (). left + ($ (thumbs [thumbIndex-1]). position (). left-$ (thumbs [thumbIndex-2]). position (). left)}); thumbIndex--; } }); $ (window). load (function () {/* set thumbnail container width */$ ('. ng-gallery-thumbnail '). each (function () {thumbContainerWidth = thumbContainerWidth + $ (this). width () + 10; }); $ ('. ng-thumbnails-container '). width (thumbContainerWidth); }); });Foto: SNORKELINGDIVES.COM/MiguelVieira/mahinui/NathanF/jurvetson/SteFou! /Julie Lynn/Fuzzy Gerdes/todd.vision
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