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Sexual Reproductive Biology of Platyias quadricornis (Rotifera: Monogononta)
Author(s) -
VelázquezRojas César Alberto,
SantosMedrano Gustavo Emilio,
RicoMartínez Roberto
Publication year - 2002
Publication title -
international review of hydrobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 1434-2944
DOI - 10.1002/1522-2632(200201)87:1<97::aid-iroh97>3.0.co;2-#
Subject(s) - biology , rotifer , zoology , mating , reproductive biology , planarian , hatching , anatomy , ecology , embryo , microbiology and biotechnology , embryogenesis , regeneration (biology)
This study examined important aspects of the sexual reproductive biology of the monogonont rotifer Platyias quadricornis . We made observations on the following: (1) Morphological description of the male, heretofore unknown. (2) An analysis of male life‐span at two temperatures. (3) Morphometric characterization of the three types of eggs known in this species and determination of hatching percentages at three temperatures. (4) Determination of the cells in the testis vesicle. The mating behavior of P. quadricornis is similar to those of other brachionids. However, three main differences were found; (a) Copulation lasts 5–6 times longer than a typical brachionid. (b) His foot is bent to allow penile attachment. (c) The sites of copulation are similar to those of members of Lecane