Results 121 to 130 of about 553 (158)
Some of the next articles are maybe not open access.
Journal of Parasitology, 2000
A new species of trichosomoidid nematodes, Huffmanela mexicana n. sp., is established on the basis of its egg morphology and biological characters. The dark-shelled, embryonated eggs of this histozoic parasite occur in masses in the inner layer of the swimbladder wall of the bullseye puffer fish Sphoeroides annulatus Jenyns, 1843 (Tetraodontidae ...
F, Moravec, E, Fajer-Avila
openaire +2 more sources
A new species of trichosomoidid nematodes, Huffmanela mexicana n. sp., is established on the basis of its egg morphology and biological characters. The dark-shelled, embryonated eggs of this histozoic parasite occur in masses in the inner layer of the swimbladder wall of the bullseye puffer fish Sphoeroides annulatus Jenyns, 1843 (Tetraodontidae ...
F, Moravec, E, Fajer-Avila
openaire +2 more sources
Fish Physiology and Biochemistry, 2003
Few mature female bullseye puffer have been observed to spawn in captivity. The ovary appears to develop to late vitellogenesis, but not to complete final oocyte maturation (FOM). Luteinizing hormone releasing hormone analogue (LHRHa) treatment induced the spawning of good quality eggs in both wild and captive brood fish.
N.J. Duncan +7 more
openaire +1 more source
Few mature female bullseye puffer have been observed to spawn in captivity. The ovary appears to develop to late vitellogenesis, but not to complete final oocyte maturation (FOM). Luteinizing hormone releasing hormone analogue (LHRHa) treatment induced the spawning of good quality eggs in both wild and captive brood fish.
N.J. Duncan +7 more
openaire +1 more source
Journal of Fish Biology, 2022
AbstractThis study aimed to describe updated information on the basic reproductive biology of Sphoeroides annulatus females and potential use of the gonadosomatic index as input data to assess length at 50% maturity () and identify the breeding season.
Carolina Salas‐Singh +2 more
openaire +2 more sources
AbstractThis study aimed to describe updated information on the basic reproductive biology of Sphoeroides annulatus females and potential use of the gonadosomatic index as input data to assess length at 50% maturity () and identify the breeding season.
Carolina Salas‐Singh +2 more
openaire +2 more sources
Journal of Morphology, 2019
AbstractThe embryonic development of the bullseye puffer, Sphoeroides annulatus, was characterized on the basis of the theory of saltatory ontogeny. This theory predicts a correlative relationship between the ontogeny‐type in an altricial‐precocial spectrum and the habitat that a species occupies within an unstable‐stable environmental spectrum ...
Juan M. Martínez‐Brown +6 more
openaire +2 more sources
AbstractThe embryonic development of the bullseye puffer, Sphoeroides annulatus, was characterized on the basis of the theory of saltatory ontogeny. This theory predicts a correlative relationship between the ontogeny‐type in an altricial‐precocial spectrum and the habitat that a species occupies within an unstable‐stable environmental spectrum ...
Juan M. Martínez‐Brown +6 more
openaire +2 more sources
Journal of Parasitology, 2004
This study provides basic information on the occurrence of platyhelminths in the wild bullseye puffer (Sphoeroides annulatus) from Sinaloa, Mexico. Specimens of pufferfish were collected from 2 localities: Teacapan (n = 161) and Mazatlan (n = 66). Six species of platyhelminths were recorded: 2 monogeneans (Diclidophoridae: Heterobothrium ecuadori and ...
Emma Josefina, Fajer-Avila +3 more
openaire +2 more sources
This study provides basic information on the occurrence of platyhelminths in the wild bullseye puffer (Sphoeroides annulatus) from Sinaloa, Mexico. Specimens of pufferfish were collected from 2 localities: Teacapan (n = 161) and Mazatlan (n = 66). Six species of platyhelminths were recorded: 2 monogeneans (Diclidophoridae: Heterobothrium ecuadori and ...
Emma Josefina, Fajer-Avila +3 more
openaire +2 more sources
Fish Physiology and Biochemistry, 2003
A fragment of a glycoprotein hormone receptor (GpHR) gene was isolated from the ovary of the bullseye puffer. This cDNA fragment showed similarity to the thyrotropin (TSH) and gonadotropin (LH and FSH) receptors. GpHR mRNA expression in the ovary gradually increased during oocyte maturation.
J.N. Gutiérrez +4 more
openaire +1 more source
A fragment of a glycoprotein hormone receptor (GpHR) gene was isolated from the ovary of the bullseye puffer. This cDNA fragment showed similarity to the thyrotropin (TSH) and gonadotropin (LH and FSH) receptors. GpHR mRNA expression in the ovary gradually increased during oocyte maturation.
J.N. Gutiérrez +4 more
openaire +1 more source
Aquaculture, 2003
Mature bullseye puffer (Sphoeroides annulatus) fish were caught and taken into captivity. Fish with a mean oocyte diameter greater than 0.45 mm were divided equally into three experimental groups (n=11) that were treated with a saline injection (control), multiple injections of luteinizing hormone-releasing hormone analogue (LHRHa) (day 0—20 A gk g 1
Neil J. Duncan +3 more
openaire +1 more source
Mature bullseye puffer (Sphoeroides annulatus) fish were caught and taken into captivity. Fish with a mean oocyte diameter greater than 0.45 mm were divided equally into three experimental groups (n=11) that were treated with a saline injection (control), multiple injections of luteinizing hormone-releasing hormone analogue (LHRHa) (day 0—20 A gk g 1
Neil J. Duncan +3 more
openaire +1 more source
Ocean & Coastal Management, 2016
Abstract Fishing is an important economic activity in Baja California Sur that creates thousands of jobs and provides high-quality food. Magdalena-Almejas Bay is a highly productive region that contributes an annual average close to 50% of state catches.
Miguel Ángel Ojeda-Ruiz +3 more
openaire +1 more source
Abstract Fishing is an important economic activity in Baja California Sur that creates thousands of jobs and provides high-quality food. Magdalena-Almejas Bay is a highly productive region that contributes an annual average close to 50% of state catches.
Miguel Ángel Ojeda-Ruiz +3 more
openaire +1 more source
Journal of Experimental Zoology Part A: Comparative Experimental Biology, 2003
AbstractThe bullseye puffer is a marine fish species with great potential for aquaculture in Mexico, and the understanding of its reproductive physiology at every level of biological organization is essential in order to succeed. Several molecules orchestrate the complex process of oocyte maturation and spawning.
Jesús Neftalí, Gutiérrez +4 more
openaire +2 more sources
AbstractThe bullseye puffer is a marine fish species with great potential for aquaculture in Mexico, and the understanding of its reproductive physiology at every level of biological organization is essential in order to succeed. Several molecules orchestrate the complex process of oocyte maturation and spawning.
Jesús Neftalí, Gutiérrez +4 more
openaire +2 more sources
Aquaculture, 2004
The bullseye puffer (Sphoeroides annulatus) is a species with potential for aquaculture. However, preliminary studies on the biology and reproduction of the species in captivity have failed to produce consistent success at hatching. In this study, the effect of aeration and water treatment (filtration and ultraviolet (UV) sterilisation) on percentage ...
C Komar +4 more
openaire +1 more source
The bullseye puffer (Sphoeroides annulatus) is a species with potential for aquaculture. However, preliminary studies on the biology and reproduction of the species in captivity have failed to produce consistent success at hatching. In this study, the effect of aeration and water treatment (filtration and ultraviolet (UV) sterilisation) on percentage ...
C Komar +4 more
openaire +1 more source