Reproduction aspect of green swordtail, Xiphophorus hellerii Heckel 1848 in Tamblingan Lake, Bali
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چکیده
منابع مشابه
Eugenol Como Anestésico Para Labores De Manipulación De Xiphophorus Helleri (heckel, 1848) (cyprinodontiformes: Poecilidae) Eugenol as Anesthetic for Handling Tasks of Xiphophorus Helleri (heckel, 1848) (cyprinodontiformes: Poecilidae)
The aim of this study was to perform various tests of the anesthetic efficacy of eugenol applied to different handling tasks such as artificial insemination, spawning induction, obtaining body weight and length, the conduct of operations, biopsies and transport of Xiphophorus helleri (Heckel, 1848). The tests were performed on 10 individual males and 10 individual females of X. helleri -1 (swor...
متن کاملRetinoic Acid Is Involved in the Metamorphosis of the Anal Fin into an Intromittent Organ, the Gonopodium, in the Green Swordtail (Xiphophorus hellerii)
In poeciliid fish the male anal fin has been transformed into a gonopodium, an intromittent organ required for internal fertilization. Elevated testosterone levels induce metamorphosis of a subset of anal fin rays to grow and form the specialized terminal structures of the gonopodium. The molecular mechanisms underlying these processes are largely unknown. Here, we investigated whether retinoic...
متن کاملSperm Swimming Velocity Predicts Competitive Fertilization Success in the Green Swordtail Xiphophorus helleri
Sperm competition is expected to favour the evolution of traits that influence the performance of sperm when they compete to fertilize a female's eggs. While there is considerable evidence that selection favours increases in sperm numbers, much less is known about how sperm quality contributes towards competitive fertilization success. Here, we determine whether variation in sperm quality influ...
متن کاملOutcome of dyadic conflict in male green swordtail fish, Xiphophorus helleri:
Abstract. The relative contribution of prior experience and of size asymmetries to the determination of dyadic dominance between unfamiliar individuals was examined using pairs of green swordtail fish, Xiphophorus helleri. Three experiments were conducted to assess the extent to which superiority in size could override potential handicaps resulting from prior experience. These results indicated...
متن کاملDistinguishing kinds of prior dominance and subordination experiences in males of green swordtail fish (Xiphophorus helleri).
In experiments, there are usually two general ways of obtaining dominants and subordinates to test for the effect of recent experience upon ulterior behavior and dominance. One is to 'impose' such an experience on the contestants by a priori deciding which individual of the pair will become the dominant and which will become the subordinate through the use of rigged contests. The second techniq...
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ژورنال
عنوان ژورنال: Jurnal Iktiologi Indonesia
سال: 2020
ISSN: 2579-8634,1693-0339
DOI: 10.32491/jii.v20i1.512