http://www.njtroutintheclassroom.org/2006/11/30/thoughts-on-mortality/ A conservation education initiative of NJ State Council of Trout Unlimited and its chapters, NJ Division of Fish & Wildlife, and leading educators Thu, 28 Aug 2008 19:15:48 +0000 http://wordpress.org/?v=2.0.5 http://www.njtroutintheclassroom.org/2006/11/30/thoughts-on-mortality/#comment-26 Thu, 30 Nov 2006 15:21:09 +0000 http://www.njtroutintheclassroom.org/2006/11/30/thoughts-on-mortality/#comment-26 <p>I have been receiving a lot of e-mails from many of you concerned about mortality. It is normal for TIC programs to see a wide range of mortality from school to school. A variety of factors contribute to this during all stages of the brook trout's life cycle, both natural and man made. The man made factors include over feeding, the inability of some fry to evade the suction of the filter and chiller pump intakes, excessively warm water, etc. In nature, of course, we also see a variety of factors related to mortality. As I mentioned above, you will see cannabilism amongst the fry in addition to the eggs which were not fertilized or did not hatch, sac fry that were too weak for survival, and other natural losses that most/all of you are experiencing. </p> I have been receiving a lot of e-mails from many of you concerned about mortality. It is normal for TIC programs to see a wide range of mortality from school to school. A variety of factors contribute to this during all stages of the brook trout’s life cycle, both natural and man made. The man made factors include over feeding, the inability of some fry to evade the suction of the filter and chiller pump intakes, excessively warm water, etc. In nature, of course, we also see a variety of factors related to mortality. As I mentioned above, you will see cannabilism amongst the fry in addition to the eggs which were not fertilized or did not hatch, sac fry that were too weak for survival, and other natural losses that most/all of you are experiencing.

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