Expression of corticoid-regulatory genes in the gills of Atlantic salmon (Salmo salar) parr and smolt and during salinity acclimation [0.03%]
大西洋鲑鱼幼鱼和亚成鱼的鳃皮质类固醇调控基因表达及其盐度适应性调节
Makoto Kusakabe,Takashi Yada,Graham Young et al.
Makoto Kusakabe et al.
In teleost fishes, cortisol is the major corticoid and has both glucocorticoid and mineralocorticoid actions. However, how fish tissues discriminate between these distinct corticosteroid actions is unclear. In mammals, the major factors res...
Spatial variation in otolith elemental chemistry of Stegastes arcifrons (Pomacentridae) reflects environmental patchiness at the Galápagos archipelago [0.03%]
奥拓耳结石的元素化学组成在空间上的变化反映了加拉帕戈斯群岛环境的补丁效应
Juan Manuel Alava-Jurado,Margarita Brandt,Michael J Kingsford
Juan Manuel Alava-Jurado
In marine ecosystems, environmental conditions shape important ecological processes. The equatorial Galápagos Marine Reserve (GMR) is known for great spatial variation in the upwelling of cold nutrient-rich waters and the input of warm Pan...
First case of parthenogenesis in an intersexual zebra shark (Stegostoma tigrinum) having incomplete claspers [0.03%]
一种不具备完全交配器官的斑马鲨（Stegostoma tigrinum）性逆转个体首次出现孤雌繁殖案例
Kazuyuki Momota,Itsuki Kiyatake,Takeshi Izawa et al.
Kazuyuki Momota et al.
Parthenogenesis, where reproduction occurs without fertilization by a male, and intersexuality, where an individual exhibits both male and female characteristics, have occasionally been observed in elasmobranchs. Although parthenogenesis ha...
A blacktip's black tip: The reliability of using dorsal-fin patterns for photo identification of blacktip reef sharks (Carcharhinus melanopterus) [0.03%]
黑边真鲨背鳍识别标志的可靠性：基于苏达那奈岛种群的照片识别研究
Laetitia A M G Lionnet,Shamil F Debaere,Hugo Heuls et al.
Laetitia A M G Lionnet et al.
Photo identification (photo ID) has increasingly become a valuable technique serving not only to identify individual animals but also to monitor populations, track migration patterns and assess wildlife health, among others uses. Various sp...
Morgane Amelot,Marianne Robert,Maud Mouchet et al.
Morgane Amelot et al.
Planktonic production fuels the base of marine food webs and can mediate energy accumulation in consumers but is affected by several anthropogenic pressures. Our understanding of how shifts in prey quality at various trophic level shape mar...
A seasonal aggregation of juvenile scalloped hammerheads Sphyrna lewini along beaches of the Gold Coast, Australia [0.03%]
澳大利亚黄金海岸沿岸的大西洋锤头鲨(Sphyrna lewini)的季节性聚集现象
Nicolas Lubitz,Kerryn Doupain,Siobhan Houlihan et al.
Nicolas Lubitz et al.
We document a recurring seasonal aggregation of juvenile scalloped hammerhead sharks Sphyrna lewini along the beaches of the Gold Coast, Australia, with notable occurrences at Burleigh Heads and Kirra Reef. The aggregation consists of indiv...
Prolonged use of freshwater habitats by the European sea bass revealed by otolith chemical analysis [0.03%]
耳石化学分析揭示了欧洲海鲈对淡水源地的长时间使用
Carlos Antunes,Catarina M Antunes,Mafalda Fernandes et al.
Carlos Antunes et al.
The European sea bass, Dicentrarchus labrax (Linnaeus, 1758), is a highly valuable marine resource for both commercial and sport fishing. Estuaries are well-recognized as critical feeding areas, particularly for juveniles, throughout the sp...
Re-describing and ascertaining to homeland Hypostomus vaillanti (Steindachner, 1877) (Siluriformes: Loricariidae), a golden and black pleco from Northeast Brazil [0.03%]
来自巴西东北部的黄金和黑色裂唇鱼属无效名称Hypostomus vaillanti (Steindachner, 1877) （匙吻目：龙甲鱼科）的重新描述及有效认定
Cláudio Henrique Zawadzki,Iago de Souza Penido,Silvia Yasmin Lustosa-Costa et al.
Cláudio Henrique Zawadzki et al.
Approximately 26 species of Hypostomus occur in the five freshwater ecoregions in Northeast Brazil. One of these ecoregions is the Parnaíba, which drains almost the entire state of Piauí, and part of the states of Maranhão and Ceará. Am...
Whale shark Rhincodon typus foraging on small schooling fish in the northern Mexican Caribbean [0.03%]
墨西哥加勒比北部游弋于小型鱼群中的鲸鲨（Rhincodon typus）
Natalí Cárdenas-Palomo,Emanuel Mimila-Herrera,Iván Velázquez-Abunader
Natalí Cárdenas-Palomo
The whale shark (Rhincodon typus) aggregates in the Mexican Caribbean from May to September to feed on mixed zooplankton patches and fish spawn. For the first time in this area, we present evidence of observations of whale sharks feeding on...
Gonzalo Mucientes,Nair Vilas-Arrondo,David Villegas-Ríos
Gonzalo Mucientes
Direct evidence of shark predation on cetaceans is scarce, making it difficult to differentiate between stomach contents that have been scavenged and actively hunted. This study reports the presence of dolphin (Tursiops aduncus and Stenella...