ライフサイエンスコーパス: ejaculate

1 prioritized over soma, at least, within the ejaculate.

2 senescence later than females receiving less ejaculate.

3 rnity advantage despite investing less in an ejaculate.

4 initiate sexual behavior and the latency to ejaculate.

5 but four ESTs identified from the individual ejaculate.

6 by the cDNAs from the pooled and individual ejaculate.

7 ructed from spermatozoal mRNAs from a single ejaculate.

8 oitally following neutralization by the male ejaculate.

9 creasing the latency to mount, intromit, and ejaculate.

10 F), resulting in no or very few sperm in the ejaculate.

11 ermia (NOA), a complete sperm absence in the ejaculate.

12 of coital sensory inputs from those of male ejaculate.

13 strategically reduce investment in their own ejaculate.

14 mating signals that can be inhibited by male ejaculate.

15 ses gradually to a peak when spermatozoa are ejaculated.

16 which find an egg from the millions of cells ejaculated.

17 o spectacular adaptations in males and their ejaculates.

18 ering of the female tract by previous males' ejaculates.

19 le ejaculates falls below that of favourable ejaculates.

20 consistently in the number of GRCs in their ejaculates.

21 r direct imaging of amyloid fibrils in human ejaculates.

22 e opportunity for exploitation of rival male ejaculates.

23 ther than from fertilization bias among male ejaculates.

24 rienced the sensation of orgasm without ever ejaculating.

25 egically allocate nonsperm components of the ejaculate [3, 4], such as seminal fluid proteins (Sfps).

26 ve success , a cost that is mediated by male ejaculate accessory gland proteins (Acps) .

27 If this fails, females differentially eject ejaculates according to male status in the absence of an

28 icts that males will strategically invest in ejaculates according to the value of mating opportunitie

29 Indeed, rival males tailor their ejaculates accordingly.

30 riation among intact fertile sperm within an ejaculate affects offspring fitness.

31 Ejaculates allocated to the second female had distinct p

32 ly tailor the composition of proteins in the ejaculate, allowing a male to take advantage of the fecu

33 ulation, cVA is transferred to the female in ejaculate along with sperm and peptides that decrease he

34 n drive rapid diversification of interacting ejaculate and female reproductive tract traits that medi

35 ts highest concentration in the normal human ejaculate and is associated with the progression of meta

36 ity results from a reduction of sperm in the ejaculate and not from sperm dysfunction.

37 Ejaculated and activated sperm beat symmetrically in hig

38 Parallel and sequential treatments of ejaculated and capacitated spermatozoa under proteasome

39 sition of the non-gametic components of male ejaculates and their interactions with female reproducti

40 alize internal sphincter closure, passage of ejaculate, and significant changes in SV volumes were de

41 The cDNAs from the testes, pooled ejaculate, and single ejaculate hybridised to 7157, 3281

42 Sperm competition favors large, costly ejaculates, and theory predicts the evolution of allocat

43 Protein components of the Drosophila male ejaculate are critical modulators of reproductive succes

44 nimals, intact fertile sperm within a single ejaculate are equivalent at siring viable offspring.

45 es per reproductive event, and the competing ejaculates are of two types, favourable (having high via

46 Male ejaculates are often structurally complex, and this comp

47 ameliorate the declining performance of the ejaculate as a whole.

48 that IN, they exhibited far fewer IN before ejaculating, as well as ejaculating much sooner after th

49 eases again towards zero as the unfavourable ejaculates become disastrous (i.e. as their progeny viab

50 a different type has an effect on intra-male ejaculate behaviour, which also depends critically on th

51 Males in this species produce large ejaculates called spermatophores composed of an outer en

52 ood and sperm from healthy men, we find each ejaculate carries on average 33.3 12.1 (mean SD) clonal

53 Ejaculated CatSperz-null sperm cells retrieved from the

54 n of multiple zonadhesin isoforms in freshly ejaculated cells.

55 Yet, apart from sperm number, relevant ejaculate characteristics and sperm-sperm interactions a

56 k reveals a previously unknown divergence in ejaculate component allocation rules, exposes downstream

57 Our results suggest that ejaculate components compensate for the costs of elevate

58 tionary conflict of the sexes and aging when ejaculate components elevate female reproductive rates a

59 Ejaculate components that are beneficial to polyandrous

60 Our results demonstrate that ejaculate composition and function emerge from the integ

61 een investment in weaponry and investment in ejaculate composition.

62 successive matings, we provide evidence that ejaculate compositional change represents an adaptive re

63 ture reproductive performance as a result of ejaculate compositional changes.

64 , and ultimately suggests a central role for ejaculate compositional plasticity in sexual selection.

65 zoospermia, refers to the condition in which ejaculate contains mostly sperm flagella without heads.

66 Each ejaculate contains trillions of exosomes, membrane-enclo

67 hat both germline and soma components of the ejaculate contribute to male reproductive aging but reve

68 operate sperm selection against unfavourable ejaculates (cryptic female choice).

69 The ejaculate effects were consistent in inter- and intra-po

70 assess the number of competitors, and their ejaculate effort is shaped by the average number <N> of

71 from one individual's body to another, as in ejaculate, eggs, and milk, secondary donor-produced mole

72 riate process involving ejaculate-female and ejaculate-ejaculate interactions, as well as complex spe

73 is enhanced, which suggests a constraint on ejaculate evolution whereby high female refractoriness a

74 -producing tissues is an important factor in ejaculate evolution.

75 ESS total ejaculate expenditure (the product m(*)s(*)) increases i

76 gies that enable males to plastically tailor ejaculate expenditure to sperm competition threat.

77 the viability of offspring from unfavourable ejaculates falls below that of favourable ejaculates.

78 erives from a multivariate process involving ejaculate-female and ejaculate-ejaculate interactions, a

79 Physiological evidence of ejaculate-female coadaptation, paired with a promiscuous

80 sperm, and that non-sperm components of the ejaculate frequently act to ameliorate these hostile con

81 oximate mechanism of female mate choice when ejaculates from multiple males overlap within the tract.

82 show that D. melanogaster females eject male ejaculates from the uterus 1-6 hr after mating with a st

83 to the resulting widespread abnormalities in ejaculate function.

84 ic contributions to the seminal proteome and ejaculate function; alternatively, they might regulate m

85 ggests that SR male ejaculate investment per ejaculate has been adjusted to match sperm delivery by w

86 arisen because male traits that protect the ejaculate have positive pleiotropic effects and/or becau

87 Highly cryo-resilient ejaculates (High_CR, n = 5) maintained > 50% sperm total

88 membranes as well as the acrosomal matrix of ejaculated human sperm.

89 This centriolar localization persisted in ejaculated human spermatozoa, while centriolar TSKS dimi

90 rom the testes, pooled ejaculate, and single ejaculate hybridised to 7157, 3281, and 2780 ESTs, respe

91 ually insert their penis into the female and ejaculate in her reproductive tract; but in some species

92 udies have documented return of sperm to the ejaculate in up to 56% of men with nonobstructive azoosp

93 econd to mate) randomly: the number of sperm ejaculated in the favoured role is greater than that in

94 lower sperm in ray-finned fishes, but larger ejaculates in insects, compared to younger males.

95 hance their paternity: by outcompeting rival ejaculates in sperm competition, and by reducing the pro

96 argue that empiricists should look for equal ejaculates in the two roles when studying random role si

97 t another, making SP a key molecule in inter-ejaculate interaction.

98 ently bypassing the female genital tract and ejaculating into their blood system.

99 This suggests that SR male ejaculate investment per ejaculate has been adjusted to

100 rules, exposes downstream costs of elevated ejaculate investment, and ultimately suggests a central

101 In tsetse, male ejaculate is assembled into a capsule-like spermatophore

102 ve stimulation, which propels sperm into the ejaculate, is mediated through P2X receptors.

103 and DM females received the same quantity of ejaculate, it was possible to eliminate material benefit

104 ales of the type occupying the favoured role ejaculate less than males of the type occupying the disf

105 ated female's reproductive tract, leading to ejaculate loss and reduced sperm storage, likely due to

106 females, conferring fitness benefits to the ejaculating male.

107 s demonstrate sophisticated protein-specific ejaculate manipulation.

108 ings illustrate how structural complexity of ejaculates may allow functionally and/or spatially assoc

109 hange significantly following the receipt of ejaculate molecules during mating.

110 encies while intact and after castration and ejaculated more frequently after castration.

111 under constraints on their mate preferences ejaculated more sperm than males mating without constrai

112 parameters, including total sperm number per ejaculate, motility, normal morphology rate, droplets, a

113 far fewer IN before ejaculating, as well as ejaculating much sooner after the first IN, thus indicat

114 male reproductive tract (FRT), HIV-1 in male ejaculate must overcome numerous innate and adaptive imm

115 Ejaculates (n = 82) collected from whitespotted bamboo s

116 )), for the first time described in the same ejaculate of an infertile, phenotypically normal male pa

117 erm are removed from storage by the incoming ejaculate of the copulating male, and sperm incapacitati

118 d that a rival male can rapidly displace the ejaculate of the guarding male [1, 2].

119 articularly in polyandrous species where the ejaculates of different males compete for fertilisation.

120 When a female is sexually promiscuous, the ejaculates of different males compete for the fertilizat

121 constrained by an inability to discriminate ejaculates of different males in direct competition.

122 dition to generating competition between the ejaculates of different males, multiple mating may allow

123 often determined by competition between the ejaculates of different males.

124 t males monopolize access to females and the ejaculates of multiple males compete for fertilization.

125 ional properties of the structurally complex ejaculates of Pieris rapae butterflies.

126 MGCs, spermatids, and spermatocytes) in the ejaculates of the PRRSV-inoculated boars and that these

127 rly in birds where the collection of natural ejaculates only recently became possible.

128 For ICSI, whether sperm were ejaculated or surgically extracted was also considered.

129 jects receiving the low dose of oxymetholone ejaculated, oxymetholone generally failed to stimulate e

130 y compared protocols for cryopreservation of ejaculated, papain-treated alpaca spermatozoa.

131 = 6) groups based on the variation of their ejaculate parameters across the two periods.

132 species, males can make rapid adjustments to ejaculate performance in response to sperm competition r

133 Variation in ejaculate performance traits generally is thought to be

134 Declining ejaculate performance with male age is taxonomically wid

135 ulin signaling results in improved late-life ejaculate performance, indicating simultaneous ameliorat

136 The pooled ejaculate population contained all but four ESTs identif

137 has been developed to explore the drivers of ejaculate protein evolution.

138 ternally fertilising species, males transfer ejaculate proteins that trigger wide-ranging changes in

139 s predicted to be influenced by variation in ejaculate quality and interactions among competing sperm

140 ompetition risk drives plastic adjustment of ejaculate quality, that seminal fluid harbours the mecha

141 22- to 24-kDa triplet of proteins in washed ejaculated rabbit spermatozoa and is unaffected by capac

142 rmal morphology rate, droplets, and rejected ejaculate rate, were measured weekly on 12 boars for two

143 selection, suggesting that properties of the ejaculate, rather than the enlarged sex comb itself, con

144 of normal female postmating responses to the ejaculate: refractoriness stimulation is impaired, but o

145 It also is unclear whether beneficial ejaculates release females from reproductive trade-offs

146 Our application of stable isotopes to label ejaculates resolves a longstanding debate by revealing h

147 e with these cytogenetic data, sequencing of ejaculates revealed that individual males from two famil

148 We briefly discuss the implications of intra-ejaculate screening for maintenance of anisogamy and for

149 siological differences between these species ejaculated semen that correlate with their sociosexual b

150 The non-sperm part of ejaculated semen, or seminal plasma, facilitates the del

151 a comprehensive set of proteins expressed in ejaculated semen.

152 nd taxon-specific differences in patterns of ejaculate senescence.

153 Protein components of the Drosophila male ejaculate, several of which evolve rapidly, are critical

154 nd armaments) and postcopulatory (testes and ejaculates) sexual traits due to the costs associated wi

155 the mating frequency, females receiving more ejaculate show increased reproductive rates and enter re

156 Male reproductive traits such as ejaculate size and quality, are expected to decline with

157 ern tend to involve facultative increases in ejaculate size by informed males.

158 ogy, primarily through the evolution of male ejaculate size.

159 We investigated the hypothesis that intra ejaculate sperm competition screens against the transmis

160 In two men with ejaculate sperm counts of 40 000-100 000 per mL, we dete

161 ,000 person-years); and following ICSI using ejaculated sperm and fresh embryos (RR, 1.47 [95% CI, 1.

162 ays of sexual abstinence, to produce freshly ejaculated sperm for the treatment cycle.

163 Ejaculated sperm from one recipient transplanted with al

164 logy, capacitation, and motility and reduced ejaculated sperm number (2.4 +/- 0.5 versus 3.7 +/- 0.4

165 om lentivirus-marked SSCs was evident in the ejaculated sperm of 9/12 adult and 3/5 prepubertal recip

166 carried out prior to any intervention using ejaculated sperm or prior to any surgical procedure to t

167 y detected in rhesus testis (although not in ejaculated sperm).

168 Out of millions of ejaculated sperm, a few reach the fertilization site in

169 Using ejaculated sperm, this work provides insight into the ma

170 osaic mutations in male gonads by sequencing ejaculated sperm.

171 Ejaculate spermatozoa can now be used as a non-invasive

172 The presence of mRNAs in human ejaculate spermatozoa is well established, yet little is

173 of the efferent ducts and strong staining of ejaculated spermatozoa.

174 lasmic droplet and is undetectable in mature ejaculated spermatozoa.

175 testes, cDNAs from a pool of nine individual ejaculate spermatozoal mRNAs, and cDNAs constructed from

176 ion of sperm heads (1 to 19%) in zebra finch ejaculates still contained the GRC.

177 f recent theoretical models that predict how ejaculate strategies evolve when males vary in the resou

178 significance, the molecular underpinnings of ejaculate structural complexity have received little emp

179 Ejaculate success requires fully functional germline (sp

180 of females in the population that favour his ejaculate (the 'random-roles' model); different males ar

181 rolongs sexual selection on males by forcing ejaculates to compete for fertilisation.

182 (i.e. harassment) and post-copulatory (i.e. ejaculate toxicity) mechanisms of male harm were asymmet

183 mating on female receptivity (a component of ejaculate toxicity) was affected at 28 degrees C, where

184 uantify the effects of advancing male age on ejaculate traits across 157 species of non-human animals

185 ulatory processes, illustrate that different ejaculate traits are critical at different biologically

186 Notably, lab rodents show senescence in most ejaculate traits measured.

187 nsistent pattern of age-dependent changes in ejaculate traits.

188 rate postcopulatory sexual selection on male ejaculate traits.

189 n investigation of tetracycline's effects on ejaculate traits.

190 o document non-linear ageing trajectories of ejaculate traits; which could potentially lead to an und

191 renders post-copulatory sexual selection on ejaculates unlikely to treat male-male competition and f

192 Our findings clearly link within-ejaculate variation in sperm phenotype to offspring fitn

193 erm concentration, morphology, motility, and ejaculate volume were assessed.

194 l desire and reduced nocturnal erections and ejaculate volume, all of which improve with testosterone

195 le with oligospermia or azoospermia with low ejaculate volume, normal secondary sex characteristics,

196 The following variables were assessed: ejaculate volume, sperm concentration, progressive motil

197 (range, 24-52 years) who had documented low ejaculate volumes and azoospermia.

198 e sperm when unwashed swim-up sperm from the ejaculate were stained, indicating that some SAMP14 is l

199 differences in proteomic signatures between ejaculates which experienced "High" versus "Baseline" (i

200 viduals had no or extremely few sperm in the ejaculate, which were not suitable for medically assiste

201 ds altruism, and as haploid germ cells of an ejaculate will have genotypic similarity of 50%, it is p

202 (CTFl), and 10 days later were killed after ejaculating with females.

203 Brains from male rats, killed 1 h after ejaculating with receptive females, were examined for Fo

204 c area and four days later were killed after ejaculating with receptive females.

205 emale fitness in the long term, high quality ejaculates would result in a short-term female fitness p