Two egg-derived molecules in sperm motility initiation and fertilization in the Pacific herring (Clupea pallasi)

Cherr, Gary N.; Morisawa, Masaaki; Vines, Carol A.; Yoshida, Kaoru; Smith, Edmund H.; Matsubara, Takahiro; Pillai, Muralidharan C.; Griffin, Frederick J.; Yanagimachi, Ryuzo

doi:10.1387/ijdb.072566gc

Cited by 44 publications

(53 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Mg 2+ was found by Rosengrave et al (2009b) to significantly affect the percentage of motile sperm in O. tshawytscha, and proteins (that we might have failed to detect) are known to be critical for sperm motility activation (e.g. Clupea pallasi; Cherr et al 2008) or affect the capacity of ovarian fluid to improve fertilization success (e.g. Salmo trutta; Lahnsteiner 2002).…”

Section: Discussionmentioning

confidence: 75%

“…Although the intensity of these effects varies, from improving sperm velocity and longevity in Salvelinus alpinus (Turner & Montgomerie 2002) to being an essential factor in motility activation in Clupea pallasi (Cherr et al 2008), potential negative effects are normally only seen at very high concentrations of ovarian fluid which arrest the osmotic mechanisms needed for sperm motility activation (e.g. Diogo et al 2010).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Wild Atlantic cod sperm motility is negatively affected by ovarian fluid of farmed females

Beirão¹,

Purchase²,

Wringe³

et al. 2014

Aquacult. Environ. Interact.

View full text Add to dashboard Cite

Atlantic cod escape from fish farms at higher rates than commonly cultured marine species, and escapees have been observed to interact with wild fish in mating aggregations. Previous research suggests that potential interbreeding is mediated largely by the likelihood of wild males spawning with escaped females, and as such, the egg and ovarian fluid characteristics of these females could affect fertilization success and the likelihood of hybridization. Farmed cod have been noted to have poor egg quality compared to wild individuals, and some of this difference may be due to the ovarian fluid, which can affect key sperm-motility parameters related to fertilization success. We tested the hypothesis that the ovarian fluid of farmed females negatively affects the sperm performance of wild males. Sperm-motility parameters and fertilization capacity of wild male sperm were analyzed in the presence of both farmed and wild female ovarian fluid. Sperm performed similarly in the presence of wild female ovarian fluid and a seawater control. Ovarian fluid of farmed females negatively affected sperm swimming and the capacity to fertilize eggs. These differences may be related to nutritional deficiencies of farmed individuals. Although it has been demonstrated that wild males actively court farmed females, our results indicate that their ovarian fluid quality can inhibit fertilization success.

show abstract

Section: Discussionmentioning

confidence: 75%

Section: Discussionmentioning

confidence: 99%

Wild Atlantic cod sperm motility is negatively affected by ovarian fluid of farmed females

Beirão¹,

Purchase²,

Wringe³

et al. 2014

Aquacult. Environ. Interact.

View full text Add to dashboard Cite

show abstract

“…In addition, this characteristic may enable a high genetic variability because a clutch of eggs from one female can be fertilized by spermatozoa, suspended in the surrounding seawater, from many males. In Pacific herring, which belongs to the same order (Clupeiformes) as Japanese anchovy, intensive studies related to the initiation of sperm motility have been conducted [10,31]. Although the Pacific herring sperm did not move in seawater when released for spawning, they started moving near unfertilized eggs through the action of herring sperm activating protein (HSAP) contained in OF [32], and entered an egg micropyle through the action of sperm motility initiating factor (SMIF), which is present near the micropyle [31,33].…”

Section: Discussionmentioning

confidence: 99%

“…Although the Pacific herring sperm did not move in seawater when released for spawning, they started moving near unfertilized eggs through the action of herring sperm activating protein (HSAP) contained in OF [32], and entered an egg micropyle through the action of sperm motility initiating factor (SMIF), which is present near the micropyle [31,33]. Also, the functional relationship of these two physiological activation factors in fertilization is discussed in Pacific herring [10]. Such activation is also observed in the nest-building marine sculpin Hemilepidotus gilberti in the presence of OF, resulting in an increased period of sperm motility of up to 90 min, six times longer than in SW alone [34].…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Features of Sperm Motility and Circadian Rhythm in Japanese Anchovy (Engraulis japonicus)

Pandey¹,

Ryu²,

Matsubara³

2017

Fish Aquac J

Self Cite

View full text Add to dashboard Cite

Japanese anchovy (Engraulis japonicus) is a commercially and ecologically important fish that exhibits group synchronous and multiple spawning. However, the reproductive characteristics of the male in this species, especially sperm features and activation, are still largely unknown. In this study, we confirmed that features of the sperm and characteristics of the activations, regarding sperm motility and moving velocity. The average size of the sperm was 51 ± 1.3 µm in total length and possessed a normal structure with clockwise, anticlockwise, and linear motion. The initial motility at one minute after activation in seawater was 75 ± 12% during spawning time in this species (21:00-22:00), and the initial moving velocity (196 ± 26 µm/sec) remained constant for fifteen minutes post activation. While, comparatively low motility (30 ± 10%) was found until 17:00, and the sperm was almost immotile in the morning (08:00-09:00). Swimming ability was also confirmed with sperm that swam for more than one hour in seawater without an exogenous energy supply derived from the ovary in females, suggesting the trigger for sperm activation in multiple spawning fish is possibly species dependent. This report is the first to demonstrate time specific activation, that is, circadian rhythm, in teleost males.

show abstract

Comparative morphology of the oocyte surface and early development in four characiformes from the São Francisco River, Brazil

Honorato‐Sampaio

Prado

Sato

et al. 2015

Journal of Morphology

View full text Add to dashboard Cite

Early development from the egg fertilization to complete resorption of the yolk-sac is a critical period in the life cycle of teleost fish. Knowledge of this process provides essential parameters for aquaculture and identification of spawning sites in the wild. In the present study, a comparative morphological analysis of the oocyte surface as well as early development was performed in four commercially valuable species from the São Francisco River: Brycon orthotaenia, Leporinus obtusidens, Prochilodus argenteus, and Salminus franciscanus. Stripped oocytes, embryo, and yolk-sac larvae were analyzed by scanning electron microscopy (SEM) and histology. A set of 10 lectins was used for investigation of lectin-binding pattern in oocytes. In the four species, the outer layer of the zona radiata reacted to most lectins, indicating complex polysaccharides at the oocyte surface while no reactivity was detected in the inner zona radiata and yolk globules. Typical structural arrangements were recognized at the micropylar region by SEM. The four species showed nonadhesive eggs, short embryonic period (18-20 h at 24 ± 1°C), and poorly developed larvae at hatching. At 24 h posthatching (hph), larvae of the four species had neuromasts on the body surface. Rudimentary cement glands for larval attachment were identified on the cephalic region at 24 and 48 hph in B. orthotaenia and S. franciscanus, and following they were in regression. The time for whole yolk resorption varied among species from 48 to 120 hph, occurring earlier in S. franciscanus, followed by B. orthotaenia, P. argenteus, and L. obtusidens. The formation of the digestive tract and the mouth opening indicated initiation of exogenous feeding 24 h before complete resorption of the yolk. Together, our data indicate similarities in the early development among species that may be related to the life cycle strategies and phylogeny.

show abstract

Two egg-derived molecules in sperm motility initiation and fertilization in the Pacific herring (Clupea pallasi)

Cited by 44 publications

References 29 publications

Wild Atlantic cod sperm motility is negatively affected by ovarian fluid of farmed females

Wild Atlantic cod sperm motility is negatively affected by ovarian fluid of farmed females

Features of Sperm Motility and Circadian Rhythm in Japanese Anchovy (Engraulis japonicus)

Comparative morphology of the oocyte surface and early development in four characiformes from the São Francisco River, Brazil

Contact Info

Product

Resources

About