Large mothers, but not large fathers influence offspring number in a caridean shrimp.

CAROLINA TROPEA; LAURA S. LÓPEZ GRECO; VALDORA M; VALDORA M; DANIELA E. SGANGA; STATTI MF; DANIELA E. SGANGA; STATTI MF; CAROLINA TROPEA; LAURA S. LÓPEZ GRECO

CANADIAN JOURNAL OF ZOOLOGY

NATL RESEARCH COUNCIL CANADA-N R C RESEARCH PRESS

Lugar: Otawa; Año: 2018

0008-4301

The relationship between parental weight and female reproductive output, as well as offspring quality, was studied under controlled laboratory conditions in the red cherry shrimp Neocaridina davidi. Adult males and females of the same age were paired combining different shrimp weights. The number of hatched juveniles from large females was higher than that from small ones, but no influence of paternal weight was detected on this variable. Both the weight of newly hatched juveniles and their growth increment during a 60-day period were similar for all parental weights. Shrimps reached sexual maturity at the end of the growth period in all treatments and their biochemical reserves (glycogen, lipid and protein concentrations) were not associated to maternal and paternal weights. However, lipid concentration was higher in female offspring than in male offspring. Present results show that unlike maternal weight, paternal weight had no effect on female reproductive output and offspring quality, suggesting that males? contribution to offspring development was adequate regardless of male size.