Lamprey larvae were recently caught for the first time in a little French Catalan river, the Têt. The morphological and molecular identification demonstrated that these ammocoetes belong to the complex [Lampetra fluviatilis / Lampetra planeri]. As lampreys and their spawning beds are protected in France, this study will have an impact on the management
Arsento, Rémy +3 more
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RFRP3 influences basal lamina degradation, cellular death, and progesterone secretion in cultured preantral ovarian follicles from the domestic cat. [PDF]
The hypothalamic neuropeptide RFRP3 can suppress hypothalamic GnRH neuron activation and inhibit gonadotropin release from the anterior pituitary. RFRP3 is also produced locally in the ovary and can inhibit steroidogenesis and follicle development in ...
Bentley, George +2 more
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Paper provides biological description of both males and females of Arctic lamprey, Lethenteron camtschaticum ammocoetes from one of Sakhalin rivers, Malaya Khuzi. It briefly describes stages of development of the larvae gonads and cases of infantilism and transverse.
V, A., Kucheryavyy, Kirillova, E. A.
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Phylogenetic relationships of the Lokiortervirus present in the genomes of Petromyzontiformes [PDF]
[Resumen]: Desde hace unos 500 Ma, los Petromyzontiformes (lampreas) evolucionan de forma independiente con respecto al resto de los vertebrados, representando uno de los linajes más basales que se conocen.
Sánchez Abad, Lucía
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Five species of helminth endoparasite (two digeneans, Brachyphallus crenatus (Rudolphi, 1802) and Lecithaster gibbosus (Rudolphi, 1802); two cestodes, plerocercoids of Nybelinia surmenicola (Okada in Dollfus, 1929) and a tetraphyllidean; and an acanthocephalan, post-cystacanths of Bolbosoma sp.) were found in adults of Arctic lampreys Lethenteron ...
Hirotaka Katahira +2 more
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Intrinsic and Extrinsic Factors Mediating the Expression of Alternative Mating Tactics in Male Green Treefrogs, Hyla Cinerea [PDF]
Males of many anuran species optimize their chances of reproductive success by vigorously calling to attract females or by adopting a non-calling “satellite” mating tactic.
Liddell, Aleah R.
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Distribution of freshwater fish in the south-western corner of Australia [PDF]
This study investigates the distribution of freshwater fishes in the Busselton to Walpole Region. A total of 311 sites in 19 major catchments along the south-west coast from Capel to Walpole, were sampled using a variety of methods.
Gill, H.S., Morgan, D.L., Potter, I.C.
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Distribution, identification and biology of freshwater fishes in south-western Australia [PDF]
A total of 410 sites in the major watersheds in the south-western corner of Australia, bounded by Bunbury in the north-west and just east of Albany in the south-east, were sampled for fish.
Gill, H.S., Morgan, D.L., Potter, I.C.
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Novel Relationships among Lampreys (Petromyzontiformes) Revealed by a Taxonomically Comprehensive Molecular Data Set [PDF]
The systematics of lampreys was investigated using complete mitochondrial cytochrome b sequences from all genera and nearly all recognized species. The families Geotriidae and Petromyzontidae are monophyletic, but the family Mordaciidae was resolved as ...
Cochran, Philip +16 more
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Редкие виды рыб бассейна Северского Донца Северо-восточной Украины [PDF]
В обзоре дана обобщающая фаунистическая сводка по видовому составу рыб Северо-восточной Украины в верхнем и начале среднего течения Северского Донца (главный приток Дона) в основном в границах Харьковской области.
Гончаров, Г.Л. +1 more
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