Monday, November 23, 2009

Fish larvae are attracted by predators in the oceans of acid pH.

魚苗食肉動物吸引了在海洋中的酸性pH值。
仔魚酸pHの海の捕食者を引き付けている。
Личинок рыб привлекают хищников в океане рН.
생선 애벌레 산성 산도의 바다의 포식자로 유인합니다.
Cá ấu trùng bị thu hút bởi kẻ thù trong lòng đại dương của pH acid.
Larves de poissons sont attirés par des prédateurs dans les océans du pH acide.
Larvas de peces son atraidas por depredadores en los oceanos de PH acido.


Scientific research from the University "James Cook"of Australia found that fish larvae born in acidic ocean waters lose ls defense mechanisms against predators, the importance of this discovery lies in the possibility of regulating the fishing and maritime activities in areas Gulf of Mexico and Caribbean Sea with the highest index acidic pH.This information can be found on BBC World and consider it of utmost importance for the control of the species in the triangle: Gulf of Mexico-Florida-Cuba.
Una investigacion cientifica de la universidad "James Cook" de Australia encontro que las larvas de peces que nacen en aguas oceanicas acidas pierden ls mecanismos de defensas ante los depredadores, la importancia de este descubrimiento radica en la posibilidad de regular legalmente bajo la Convencion del Mar, mediante parametros tecnicos, las zonas de pesca y todo tipo de actividad maritima en areas del Golfo de Mejico y Mar Caribe donde sea mayor el indice PH acido.Esta informacion la encontre en BBC Mundo y la considero de suma importancia para el control de las especies en el triangulo: Golfo de Mejico-Florida-Cuba.
Source, Fuente: BBC Mundo:Pulse aqui, click here:http://www.bbc.co.uk/mundo/participe/2009/11/091122_1330_riesgo_peces_sao.shtml
Main Source:http://www3.interscience.wiley.com/journal/122684940/abstract Ecology Letters
Early View (Articles online in advance of print)
Published Online: 16 Nov 2009
Journal compilation © 2009 Blackwell Publishing Ltd/CNRS
LETTER
Ocean acidification disrupts the innate ability of fish to detect predator olfactory cues
Danielle L. Dixson*, Philip L. Munday and Geoffrey P. Jones
ARC Centre of Excellence for Coral Reef Studies, and School of Marine and Tropical Biology, James Cook University, Townsville, QLD 4811, Australia
Correspondence to *E-mail: danielle.dixson@jcu.edu.au
Copyright Journal compilation © 2009 Blackwell Publishing Ltd/CNRS
KEYWORDS
Amphiprion percula • innate behaviour • ocean acidification • olfactory cues • predator recognition
ABSTRACT
While ocean acidification is predicted to threaten marine biodiversity, the processes that directly impact species persistence are not well understood. For marine species, early life history stages are inherently vulnerable to predators and an innate ability to detect predators can be critical for survival. However, whether or not acidification inhibits predator detection is unknown. Here, we show that newly hatched larvae of the marine fish Amphiprion percula innately detect predators using olfactory cues and this ability is retained through to settlement. Aquarium-reared larvae, not previously exposed to predators, were able to distinguish between the olfactory cues of predatory and non-predatory species. However, when eggs and larvae were exposed to seawater simulating ocean acidification (pH 7.8 and 1000 p.p.m. CO2) settlement-stage larvae became strongly attracted to the smell of predators and the ability to discriminate between predators and non-predators was lost. Newly hatched larvae were unaffected by CO2 exposure and were still able to distinguish between predatory and non-predatory fish. If this impairment of olfactory preferences in settlement-stage larvae translates to higher mortality as a result of increased predation risk, there could be direct consequences for the replenishment and the sustainability of marine populations.
Editor, Emmett Duffy Manuscript received 28 May 2009 First decision made 30 June 2009 Second decision made 14 September 2009 Manuscript accepted 28 September 2009
DIGITAL OBJECT IDENTIFIER (DOI)10.1111/j.1461-0248.2009.01400.x About DOI

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