Results 51 to 60 of about 3,629,790 (173)

Body size of male Atlantic salmon (Salmo salar L.) at introduction of a 5‐week LD12:12 winter signal influences their decision to mature early or smoltify

open access: yesJournal of Fish Biology, EarlyView.
Abstract Sexual maturation of male Atlantic salmon post‐smolts (‘jacking’) is undesired in aquaculture and seems to occur due to the intensification in modern facilities. Maturation depends on internal and external factors (temperature, photoperiod, feed availability, energy levels, body size, genetic background) that act on the brain‐pituitary‐gonad ...
Enrique Pino‐Martinez   +5 more
wiley   +1 more source

Predicting red sea urchin fishing from gonadosomatic index.

open access: yes, 2018
Mean port-sampling gonadosomatic index (GSI) predicting average monthly California Department of Fish and Wildlife (CDFW) data for 2009–2011 and for 1978–2008 in (a, e) effort (number of receipts), (b, f) total landings (millions of kg), (c, g) mean ...
Sarah T. Rathbone (5345984)   +7 more
core   +1 more source

Gonadosomatic index and weight/length relationship in females of three penaeoidean shrimps impacted by fisheries on the southeastern Brazilian coast

open access: yesNauplius, 2020
The aim of this study was to evaluate the gonadosomatic index (GSI) and the weight/length ratio in important shrimp populations (Xiphopenaeus kroyeri (Heller, 1862), Litopenaeus schmitti (Burkenroad, 1936), Rimapenaeus constrictus (Stimpson, 1874)) from ...
Renan Augusto Pereira dos Santos   +6 more
doaj   +1 more source

The physiological response of juvenile diploid and triploid Arctic charr Salvelinus alpinus to exhaustive exercise

open access: yesJournal of Fish Biology, EarlyView.
Abstract Triploidy is an effective tool for producing sterile fishes but often results in impaired performance in commercial aquaculture. In light of this, our study compared the physiological response to exhaustive exercise in juvenile diploid and triploid Arctic charr Salvelinus alpinus, a polar species with great potential for aquaculture.
John D. Clark, Tillmann J. Benfey
wiley   +1 more source

Conservation Challenges for Macrognathus acuelatus: A Case Study of Threatened Fish in Bengawan Solo and Brantas Rivers, East Java

open access: yesJournal of Aquaculture Science
Macrognathus aculeatus is a local fish from the Bengawan Solo and Brantas Rivers threatened with extinction. Due to the lack of literacy on the biology of this fish.
Nida'an Khofiyyah   +2 more
doaj   +1 more source

Black Carp Mylopharyngodon piceus reproductive development and maturation in the Mississippi River basin

open access: yesJournal of Fish Biology, EarlyView.
Abstract Black Carp Mylopharyngodon piceus are native to most major east Asian drainages and are internationally cultured for use as a food‐fish or a biological control for molluscs. We describe the reproductive biology of Black Carp from the growing invasive population in the Mississippi River basin through examination of incidental commercial ...
Patrick T. Kroboth   +5 more
wiley   +1 more source

Reproductive parameters of Oreochromis mossambicus in Laguna de Los Patos, Cumaná, Venezuela [PDF]

open access: yesBrazilian Journal of Biology
A total of 381 specimens of the tilapia Oreochromis mossambicus collected monthly from May 2017 to May 2018 in the Laguna de Los Patos, Cumaná, Venezuela, to evaluate reproductive parameters of this non-native species.
T. Urbano   +3 more
doaj   +1 more source

Spatiotemporal variability in reproductive readiness of silver carp Hypophthalmichthys molitrix along a Western invasion front

open access: yesJournal of Fish Biology, EarlyView.
Abstract Invasive species may exhibit varied reproductive capacity at the edge of their distributions. The dynamic habitat conditions of prairie streams along the edge of invasive Silver Carp Hypophthalmichthys molitrix ranges may limit reproduction. The objectives of this study were to assess the spatial and seasonal variation in female Silver Carp ...
Jessi Urichich   +3 more
wiley   +1 more source

The evolution of gonad expenditure and gonadosomatic index (GSI) in male and female broadcast-spawning invertebrates

open access: yes, 2017
Parker GA, Ramm SA, Lehtonen J, Henshaw JM. The evolution of gonad expenditure and gonadosomatic index (GSI) in male and female broadcast-spawning invertebrates. Biological Reviews.
Lehtonen, Jussi   +7 more
core   +1 more source

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