scholarly journals Erratum: ‘Structure of the seminal receptacle and sperm storage in the Japanese pygmy squid’

2018 ◽  
Vol 304 (2) ◽  
pp. 150-150
Keyword(s):  
Seminal Receptacle ◽  
Sperm Storage

Brooding and sperm storage by the deep-sea squid Bathyteuthis berryi (Cephalopoda: Decapodiformes)

2012 ◽  
Vol 92 (7) ◽  
pp. 1629-1636 ◽  
Author(s):  
Stephanie L. Bush ◽  
Hendrik J. T. Hoving ◽  
Christine L. Huffard ◽  
Bruce H. Robison ◽  
Louis D. Zeidberg
Keyword(s):  
Deep Sea ◽  
Seminal Receptacle ◽  
Submarine Canyon ◽  
Sperm Storage ◽  
Costs And Benefits ◽  
Remotely Operated Vehicles ◽  
The Family ◽  
Post Spawning ◽  
Egg Care

Squids of the family Bathyteuthidae have generally been infrequently encountered in their deep-sea habitat. Remotely operated vehicles were used to observe seven individuals in situ in the Monterey Submarine Canyon, CA, USA. One of these was a female Bathyteuthis berryi holding a sheet with approximately 360 embedded embryos. Examination of this female after collection revealed the presence of a seminal receptacle on the buccal membrane. We present some potential costs and benefits of post-spawning egg care, a strategy that is now known for two families of deep-dwelling squids, but may turn out to be more common with the increasing exploration of the deep sea.

scholarly journals Costs and benefits of giant sperm and sperm storage organs in Drosophila melanogaster

2019 ◽  
Author(s):  
Susanne Zajitschek ◽  
Felix Zajitschek ◽  
Sarah Josway ◽  
Reem Al Shabeeb ◽  
Halli Weiner ◽  
...  
Keyword(s):  
Seminal Receptacle ◽  
Fertilization Success ◽  
Inbred Lines ◽  
Sperm Storage ◽  
Sperm Length ◽  
Costs And Benefits ◽  
Female Fitness ◽  
Storage Organ ◽  
Trade Offs ◽  
Storage Organs

ABSTRACTIn the Drosophila lineage, both sperm and the primary female sperm storage organ, the seminal receptacle (SR), may reach extraordinary lengths. In D. melanogaster, long SRs bias fertilization toward long sperm during the displacement stage of sperm competition. This sperm-SR interaction, together with a genetic correlation between the traits, suggests that the coevolution of exaggerated sperm and SR lengths may be driven by Fisherian runaway selection. To further understand the costs and benefits of long sperm and SR genotypes in both sexes, we measured male and female fitness in inbred lines of D. melanogaster derived from four populations previously selected for long sperm, short sperm, long SRs, or short SRs. We specifically asked: do long SRs impose costs or benefits on the females that bear them? Do genotypes that generate long sperm in males impose a fitness cost on females sharing those genotypes? Is long sperm an honest indicator of male viability and associated with increased fitness? And finally, are the benefits of long sperm restricted to competitive fertilization success, or do long-sperm males also have increased mating success and fecundity in single matings? We found that both sexes have increased longevity in long sperm and long SR genotypes, with fewer reproduction-related benefits and evidence for trade-offs in males, compared to females. Our results suggest that sperm length and SR length are both indicators of increased viability.

scholarly journals Quantitative genetic analysis of among-population variation in sperm and female sperm-storage organ length in Drosophila mojavensis

2003 ◽  
Vol 81 (3) ◽  
pp. 213-220 ◽  
Author(s):  
GARY T. MILLER ◽  
WILLIAM T. STARMER ◽  
SCOTT PITNICK
Keyword(s):  
Genetic Analysis ◽  
Seminal Receptacle ◽  
Sperm Storage ◽  
Population Variation ◽  
Sperm Length ◽  
Drosophila Mojavensis ◽  
Storage Organ ◽  
Quantitative Genetic ◽  
Y Chromosomes ◽  
Quantitative Genetic Analysis

In Drosophila, sperm length and the length of the females' primary sperm-storage organ have rapidly coevolved through post-copulatory sexual selection. This pattern is evident even among geographic populations of Drosophila mojavensis. To understand better these traits of potential importance for speciation, we performed quantitative genetic analysis of both seminal receptacle length and sperm length in two divergent populations. Parental strains, F1, F1 reciprocal (F1r), F2, F2r, backcross and backcross reciprocal generations were used in a line-cross (generation means) analysis. Seminal receptacle length is largely an autosomal additive trait, whereas additivity, dominance and epistasis all contributed to the means of sperm length. Either an X-chromosome or a Y-chromosome effect was necessary for models of sperm length to be significant. However, the overall contributions from the X and Y chromosomes to sperm length was small.

Structure of the seminal receptacle and sperm storage in the Japanese pygmy squid

2010 ◽  
Vol 282 (3) ◽  
pp. 151-156 ◽  
Author(s):  
N. Sato ◽  
T. Kasugai ◽  
Y. Ikeda ◽  
H. Munehara
Keyword(s):  
Seminal Receptacle ◽  
Sperm Storage
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