LEADER 03995oam 2200613I 450 001 9910954345303321 005 20251116223949.0 010 $a0-429-17203-6 010 $a1-4822-5438-7 024 7 $a10.1201/b17948 035 $a(OCoLC)899156805 035 $a(SSID)ssj0001401905 035 $a(PQKBManifestationID)11755556 035 $a(PQKBTitleCode)TC0001401905 035 $a(PQKBWorkID)11357679 035 $a(PQKB)10210393 035 $a(MiAaPQ)EBC1701385 035 $a(CKB)3710000000326357 035 $a(EXLCZ)993710000000326357 100 $a20180331h20152015 uy 0 101 0 $aeng 135 $aurnn|nnn|nn|n 181 $ctxt 182 $cc 183 $acr 200 10$aEnvironmental sex differentiation in fish /$fT.J. Pandian, Visiting Professor, CAS, Marine Biology, Annamalai University, Tamil Nadu, India 205 $a1st ed. 210 1$aBoca Raton :$cTaylor & Francis,$d[2015] 210 4$dİ2015 215 $a1 online resource (298 pages) $cillustrations (some color) 225 1 $aSeries on Sex Differentiation in Fish 300 $aA CRC title. 300 $aA Science Publishers book. 311 08$a1-322-63613-3 311 08$a1-4822-5437-9 320 $aIncludes bibliographical references at the end of each chapters. 327 $a1. Introduction -- 2. Overexploitation by fisheries -- 3. Aquaculture and crowding -- 4. Endocrine disruption -- 5. Hypoxia and anoxia -- 6. pH and precipitation -- 7. Temperature and sex ratio -- 8. Climate change and differentiation -- 9. Conservation -- 10. Differentiation and conclusions. 330 $aFish constitute an important natural renewable resource and any reduction in their ability to propagate as a result of human interference may have significant socioeconomic consequences. The negative effect of human activity on sex differentiation and reproductive output in fish is so diverse that it has been difficult to encompass it in a single book. This book serves as the first attempt to do so. Unlike in mammals, the expression of a host of sex differentiation genes in fish is mostly controlled by environmental factors. Not surprisingly, environmental sex differentiation is ubiquitous in fish. Overexploitation by capture fisheries does not disrupt sex differentiation but crowding in aqua-farms does, by reducing accessibility to food supply. Some of the man-made chemicals routinely used worldwide mimic endogenous hormones. For example endosulfan, which is widely used in developing countries, disrupts endogenous hormones and feminizes fish. For the first time, this book views endocrine disruption from the point of labile early life and non-labile adult stages. It shows that sex can irreversibly be reversed, when exposed to endocrine disrupting chemicals (EDCs) during early labile stages but reversibly impairs reproductive output on exposure to EDCs during non-labile adult stage. A consequence of climate change, elevated temperature, and declining oxygen and pH levels is that it masculinises genetic female fish. Fish display a remarkable ability to postpone the labile period. Besides postponement, some primary and tertiary gonochores have two distinct labile periods amenable to temperature and hormonal manipulations. Hermaphrodites have retained the period until the end of the adult stage and are capable of sex change/reversal more than once in both male and female directions. 606 $aFishes$xReproduction 606 $aFishes$xEffect of human beings on 606 $aFishes$xClimatic factors 606 $aFishes$xSex ratio 615 0$aFishes$xReproduction. 615 0$aFishes$xEffect of human beings on. 615 0$aFishes$xClimatic factors. 615 0$aFishes$xSex ratio. 676 $a597.156 700 $aPandian$b T. J.$0770037 801 0$bFlBoTFG 801 1$bFlBoTFG 906 $aBOOK 912 $a9910954345303321 996 $aEnvironmental sex differentiation in fish$94496644 997 $aUNINA