Results 61 to 70 of about 610 (173)
Fish life history trends indicate increasing flow stochasticity in an unregulated river
Ecosphere, 2020 Life history theory provides a framework to understand environmental change based on species traits that capitalize on stable, predictable, or stochastic environmental conditions. We evaluated life history strategies and temporal trends in abundance from
Nathaniel P. Hitt +4 more
doaj +1 more source
Global Change Biology Communications, Volume 1, Issue 2, June 2026.This paper tailors adaptive capacity understanding for North American freshwater fishes, mussels, and crayfishes by integrating trait‐based approaches to provide practical guidance for improving management and conservation decisions under global change.
H. S. Embke +21 more
wiley +1 more source
Reproductive cycle of smallmouth bass in Lake Akimoto
NIPPON SUISAN GAKKAISHI, 2004 福島県秋元湖に生息するコクチバスの生殖腺周期を調査した。雄では4～7月と9～12月において精子又は精細胞がみられたが, GSI の低い8月には精母細胞が多く観察された。雌では4～6月と10～12月において周辺仁期と卵黄球期の卵母細胞がみられ, GSI の低い7～9月には卵黄球期の卵母細胞の割合が減少した。testosteroneと17,20β-dihydroxy-4-pregnen-3-oneの血中量は, 雌雄共に5月にピークを示した。本種は春から初夏にかけてが主な繁殖期であるが, 秋以降も一定の成熟度を保つことがわかった。
YAMBE, HIDENOBU +4 more
openaire +2 more sources
Historical Records of Tumours in New Zealand Marine Fishes
New Zealand Journal of Marine and Freshwater Research, Volume 60, Issue 2, June 2026.Tumours were first described in New Zealand marine fishes in 1982 but those early records have been difficult to access and subsequently few tumours have been collected and little has been published. This review updates records of identified tumours from teleosts in the New Zealand marine environment and may encourage more work to identify background ...
John Brian Jones
wiley +1 more source
Fisheries Management and Ecology, Volume 33, Issue 3, Page 568-590, June 2026.ABSTRACT Local ecological knowledge can be useful to assess data‐limited fisheries such as the Ontario Black Bass (Micropterus spp.) recreational fishery. We surveyed local anglers using the Life History Calendar approach to determine if there were perceived changes in fishing quality for Black Bass in eastern Ontario across different time periods. For
Joel Zhang +8 more
wiley +1 more source
Sexual and Seasonal Variations of Mercury in Smallmouth Bass
Journal of Freshwater Ecology, 2007 ABSTRACT We assessed sexual and seasonal variations of total mercury in the muscle tissue of smallmouth bass (Micropterus dolomieu) in the South Fork of the Shenandoah River, Virginia. The average concentration of total mercury in the muscle tissue of bass sampled was 0.79 μg/g wet weight and ranged from 0.30 to 1.38 μg/g.
Gregory W. Murphy +2 more
openaire +1 more source
Optimising invasive fish management in the context of invasive species legislation in South Africa
Bothalia: African Biodiversity & Conservation, 2017 Background: South Africa hosts a large number of non-native freshwater fishes that were introduced for various industries. Many of these species are now listed under the National Environmental Management: Biodiversity Act (NEM:BA) Alien and Invasive ...
Darragh J. Woodford +5 more
doaj +1 more source
Koedoe: African Protected Area Conservation and Science, 2017 The Berg–Breede River whitefish, Barbus andrewi, an endangered Cape Floristic Region endemic, was once widespread in both the Berg and Breede River catchments.
Jeremy M. Shelton +3 more
doaj +1 more source
Gonadal Development in Smallmouth Bass (Micropterus Dolomieu) Reared in the Absence and Presence of 17-α-Ethinylestradiol. [PDF]
Environ Toxicol Chem, 2022 Kadlec SM +6 more
europepmc +1 more source
Development of a Multiplex Fluorescence in Situ Hybridization Assay to Identify Coinfections in Young-of-the-Year Smallmouth Bass. [PDF]
J Aquat Anim Health, 2022 Walsh HL, Blazer VS, Mazik PM.
europepmc +1 more source