Results 171 to 180 of about 2,260 (213)
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Journal of morphology, 2023
In viviparous teleosts, intraovarian gestation occurs intrafollicularly, as in poeciliids, or intraluminally, as in goodeids and anablepids. Furthermore, there are two different forms of embryonic nutrition: lecithotrophy and matrotrophy; depending on ...
L. Di Cesare +5 more
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In viviparous teleosts, intraovarian gestation occurs intrafollicularly, as in poeciliids, or intraluminally, as in goodeids and anablepids. Furthermore, there are two different forms of embryonic nutrition: lecithotrophy and matrotrophy; depending on ...
L. Di Cesare +5 more
semanticscholar +1 more source
Bulletin of Zoological Nomenclature
. The International Commission on Zoological Nomenclature has used its plenary power to stabilise the spelling of various junior subjective synonyms proposed before 2000 and belonging to the fish family Rivulidae (Osteichtyes, Cyprinodontiformes), by ...
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. The International Commission on Zoological Nomenclature has used its plenary power to stabilise the spelling of various junior subjective synonyms proposed before 2000 and belonging to the fish family Rivulidae (Osteichtyes, Cyprinodontiformes), by ...
semanticscholar +1 more source
Zootaxa, 2023
A new annual killifish species, Moema beltramonorum, is described from a seasonal swamp next to arroyo Crespo, belonging to Ro San Martin, a tributary of Ro Itnez, Amazon River basin, Bolivia.
S. Valdesalici
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A new annual killifish species, Moema beltramonorum, is described from a seasonal swamp next to arroyo Crespo, belonging to Ro San Martin, a tributary of Ro Itnez, Amazon River basin, Bolivia.
S. Valdesalici
semanticscholar +1 more source
HISTORICAL BIOGEOGRAPHY OF THE LIVEBEARING FISH GENUS POECILIOPSIS (POECILIIDAE: CYPRINODONTIFORMES)
Evolution, 2002To assess the historical biogeography of freshwater topminnows in the genus Poeciliopsis, we examined sequence variation in two mitochondrial genes, cytochrome b (1140 bp) and NADH subunit 2 (1047 bp). This widespread fish genus is distributed from Arizona to western Colombia, and nearly half of its 21 named species have distributions that border on ...
Mateos, Mariana +2 more
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Micron, 2013
The Sertoli cell contributes to spermatogenesis acting in the differentiation of germ cells and being the only somatic cells present in the germinal compartment. So that spermatogenesis is primarily dependent of Sertoli-Sertoli and Sertoli-germ cell interactions once Sertoli cells provide critical factors necessary for a successful differentiation of ...
Mônica, Cassel +2 more
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The Sertoli cell contributes to spermatogenesis acting in the differentiation of germ cells and being the only somatic cells present in the germinal compartment. So that spermatogenesis is primarily dependent of Sertoli-Sertoli and Sertoli-germ cell interactions once Sertoli cells provide critical factors necessary for a successful differentiation of ...
Mônica, Cassel +2 more
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Validity and Redescription of Profundulus balsanus Ahl, 1935 (Cyprinodontiformes: Profundulidae)
Zootaxa, 2016Profundulus balsanus was described by Ahl in 1935 and later placed in synonymy with P. punctatus. Recent molecular studies have demonstrated that specimens identified as P. balsanus belong to a distinct taxon. Herein we used a combination of morphometric, meristic, coloration and osteological data in order to demonstrate the distinctiveness of P ...
José A, Jamangapé O +7 more
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Journal of Helminthology
Clinostomids are a group of digeneans in which substantial diversity has been recently discovered, with some metacercariae specific to their fish hosts. Genetic analysis has been instrumental in elucidating species diversity within this genus.
M.M. Montes +7 more
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Clinostomids are a group of digeneans in which substantial diversity has been recently discovered, with some metacercariae specific to their fish hosts. Genetic analysis has been instrumental in elucidating species diversity within this genus.
M.M. Montes +7 more
semanticscholar +1 more source
Sound Production in Cyprinodon bifasciatus (Cyprinodontiformes)
Environmental Biology of Fishes, 2000Sound production in Cyprinodon bifasciatus, a pupfish endemic to the Cuatro Cienegas basin, Coahuila, Mexico, is documented. The average dominant frequency is 409 Hz, with an average duration of 55 msec. Calls were produced by males during pursuits of conspecifics and cichlids, during territory patrol, while following a female and after spawning. There
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Life‐History Patterns of Cuban Poeciliid Fishes (Teleostei: Cyprinodontiformes)
Zoo Biology, 2012The following work provides basic information about the life history of 10 Cuban species of the family Poeciliidae. Adult fish stocks were captured in their natural habitat, and litters obtained from them were raised and maintained in captivity for 19 weeks. For each species, we present the mean value of newborn length (TLo), age at sexual maturity (AM)
José L, Ponce de León +2 more
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Zootaxa
A new species of Melanorivulus, belonging to the Melanorivulus zygonectes species group, is described from the rio Galera, a tributary of the right bank of the upper rio Guaporé, Amazon basin, Mato Grosso state, Brazil.
D. Nielsen, W. Ohara
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A new species of Melanorivulus, belonging to the Melanorivulus zygonectes species group, is described from the rio Galera, a tributary of the right bank of the upper rio Guaporé, Amazon basin, Mato Grosso state, Brazil.
D. Nielsen, W. Ohara
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