Pheromone-Induced Spawning of Pacific Herring

Carolsfeld, Joachim; Tester, Monica; Kreiberg, Henrik; Sherwood, Nancy M.

doi:10.1006/hbeh.1997.1378

Cited by 31 publications

(19 citation statements)

References 14 publications

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“…It is known that male and female fish can release a wide range of sex steroids into the water, which exert effects on the reproductive behavior and physiology in their conspecifics (Munakata and Kobayashi, 2009). In fact, male pheromones have been used to induce ovulation and spawning in zebrafish (Brachydario rerio) (Lambert et al, 1986), Pacific herring (Clupea harengus pallasi) (Carosfeld et al, 1997) (Sorensen et al, 2005). It has also been described that hormonal treatments increase the releasing rate of pheromones into the water, as demonstrated in male tench (Tinca tinca) treated with a combined GnRHa and dopamine antagonist treatment (Pinillos et al, 2002) and goldfish treated with hCG injections (Sorensen et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

Comparative effects of human chorionic gonadotropin (hCG) and gonadotropin-releasing hormone agonist (GnRHa) treatments on the stimulation of male Senegalese sole (Solea senegalensis) reproduction

et al. 2011

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The aquaculture of Senegalese sole (Solea senegalensis) is limited by the failure of cultured breeders (G1 generation) to produce fertilized spawning. Critical reproductive dysfunctions have been observed in both female and male Senegalese sole cultured breeders, including reduced fecundity and diminished sperm production. The present work aimed to study the effectiveness of different hormonal treatments on the stimulation of male reproduction. Male Senegalese sole cultured breeders were treated with 1) saline injections (controls), 2) gonadotropin-releasing hormone agonist ). Each group of males was placed in separated spawning tanks together with females treated with GnRHa implants.All three hormonal treatments increased plasma testosterone (T) and 11-ketotestosterone (11-KT) levels and the gonadosomatic index (GSI), with highest effects exerted by the hCG treatment. Histological examination of the testes showed no effect of the GnRHa injection, but a clear stimulation of germ cell proliferation and testicular maturation by GnRHa implants and hCG injections. As expected, GnRHa implantation of females induced egg release in all experimental tanks and interestingly, female fecundity increased in tanks containing GnRHa-or hCG-treated males. A fertilized spawning was obtained only from the group containing hCG-treated males. In conclusion, hormonal treatments stimulated steroidogenesis and spermatogenesis in male Senegalese sole, with highest efficiency of the hCG multiple injection treatment.

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Section: Discussionmentioning

confidence: 99%

Comparative effects of human chorionic gonadotropin (hCG) and gonadotropin-releasing hormone agonist (GnRHa) treatments on the stimulation of male Senegalese sole (Solea senegalensis) reproduction

et al. 2011

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“…Pacific herring are primitive teleosts that spawn in large schools without physical interactions between sexes; this is considered ancestral to other teleost mating systems (Carolsfeld et al, 1997). It has been documented that male herring spawn first and the release of milt in the water attracts and induces spawning in females as well as other males (Hay, 1985;Carolsfeld et al, 1997). For example, Hay (1985) observed large regions of the coast with sperm in the water (known as "white water") with no egg deposition, and subsequently found that males were spent while females were only partially spent.…”

Section: Proposed Model For Role Of Herring Egg-derived Sperm Motilitmentioning

confidence: 99%

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

Cherr

Morisawa²,

Vines³

et al. 2008

Int. J. Dev. Biol.

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Sperm of the Pacific herring are immotile at spawning. Two egg-derived molecules are capable of initiating sperm motility. One is herring sperm activating protein(s) (HSAPs) and the other is sperm motility initiation factor (SMIF). These two motility initiators differ in their location and association with the chorion, and in thier isoelectric points and molecular weights. In this study we have investigated the roles of these two inducers with respect to motility and fertilization. Using computer analysis of sperm motility, we found that HSAPs, as well as the Cterminal HSAPs peptide, elicit a linear motility pattern, while SMIF induced a highly circular and asymmetric pattern. HSAPs induced a two-fold increase in intracellular calcium, whereas SMIF induced a four-fold increase of motility initiation. SMIF-exposed sperm, preloaded with BAPTA-AM, showed a more linear motility and this motility trajectory decreased with their fertilizing capability. The difference in intracellular calcium levels between HSAPs and SMIF is consistent with the observed linear and circular motility. In the absence of SMIF, HSAPs do not support fertilization. Fertilization is rescued in these experiments if SMIF is reintroduced. We propose that diffusible HSAPs are not essential for fertilization, but enhance sperm-egg collisions via linear motility. SMIF, which is bound to the micropylar region of the chorion, is required for fertilization and induces circular motility that is a prerequisite for sperm to enter the micropylar canal and fertilize the egg.

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“…Indeed, the presence of molecules specifically binding sex steroids is a prerequisite for hormones to carry on their biological function through the regulation of gene expression (Ozawa, 2005;Wierman, 2007). It is well known that sex steroid hormones can function as pheromones, hence can inform about the sexual status of the opposite sex (Carolsfeld et al, 1997;Devidze et al, 2006;Mayer et al, 1994;Olsen and Liley, 1993;Sorensen et al, 1991Sorensen et al, , 1995. In this context, the presence of a PR in the olfactory organ of the Salmo trutta fario is particularly relevant.…”

Section: Discussionmentioning

confidence: 99%

The olfactory organ of the trout Salmo trutta fario: A novel localization for a progestin receptor

Varricchio

Coccia

Putti

et al. 2009

Microscopy Res & Technique

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A progestin receptor (PR) has been detected in the olfactory organ of the trout Salmo trutta fario. The specificity of this receptor was high for 17alpha,20beta-dihydroxy-4-pregnen-3-one (17alpha,20beta-DP), but it also bound 17alpha-hydroxy-progesterone (17alpha-OHP) and 21-hydroxyprogesterone (21-OHP), even when present at low concentrations (10-fold in relative binding affinity assay). Progesterone (P) competed effectively at much higher concentrations (1,000-fold in relative binding affinity assay). Immunohistochemical studies carried out with three different monoclonal antibodies against human progesterone receptor (hPR), chicken progesterone receptor hinge region (cPR), and chicken progesterone receptor A/B domain (PR22), revealed that immunoreactivity was present in the epithelium of the olfactory organ of females and males of the trout Salmo trutta fario only against hPR. Western blotting showed two hPR immunoreactive bands of about 62 and 66 kDa. Finally, a portion of the cDNA of about 300 nucleotides extending over the DNA binding domain and the ligand binding domain was cloned and sequenced, revealing a high degree of sequence homology of the PR in Salmo trutta fario with the PR in other teleosts.

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Pheromone-Induced Spawning of Pacific Herring

Cited by 31 publications

References 14 publications

Comparative effects of human chorionic gonadotropin (hCG) and gonadotropin-releasing hormone agonist (GnRHa) treatments on the stimulation of male Senegalese sole (Solea senegalensis) reproduction

Comparative effects of human chorionic gonadotropin (hCG) and gonadotropin-releasing hormone agonist (GnRHa) treatments on the stimulation of male Senegalese sole (Solea senegalensis) reproduction

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

The olfactory organ of the trout Salmo trutta fario: A novel localization for a progestin receptor

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