Open AccessInter‐ and intra‐specific differences in the effects of anoxia on erpobdellid leeches using static and flow‐through systems
Author(s) -
Davies Ronald W.,
Yang T.,
Wrona Frederick J.
Publication year - 1987
Publication title -
ecography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.973
H-Index - 128
eISSN - 1600-0587
pISSN - 0906-7590
DOI - 10.1111/j.1600-0587.1987.tb00751.x
Subject(s) - anoxic waters , survivorship curve , biology , ecology , zoology , cancer , genetics
Inter‐ and intra‐specific differences in survivorship of Nephelopsis obscura and Erpobdella punctata under anoxic conditions were examined. Two types of experiments were used. In the closed (static) experiments the leeches faced three stresses – anoxia, build‐up of metabolites and starvation, while in the flow‐through experiments only anoxia was experienced. The results obtained from the two types of experiments indicate that survival times are longer in the flow‐through experiments. Inter‐ and intra‐specific differences in survivorship under anoxic conditions correlate well with the patterns of reproduction observed for field populations of N. obscura and E. punctata .