Results 11 to 20 of about 140,256 (159)

Influence of Size and Maturity on Injury in Young Elite Soccer Players. [PDF]

open access: yesInt J Environ Res Public Health, 2021
The involvement of pre-adolescents in soccer is becoming more and more frequent, and this growing participation generates some concerns about the potential factors for sports injuries. The purpose of this study was to investigate sports injuries in younger (U9–U11) and older (U12–U13) children playing soccer at an elite level, analyzing potential ...
Rinaldo N, Gualdi-Russo E, Zaccagni L.
europepmc   +6 more sources

The evolution of developmental thresholds and reaction norms for age and size at maturity. [PDF]

open access: yesProc Natl Acad Sci U S A, 2021
Significance Why most—but not all—organisms mature earlier in better growth conditions remains a mystery. Theory suggest that a solution may lie in the existence and evolution of critical size thresholds during development. The threshold model makes two unique predictions on the evolution of reaction norms between species and the ...
Nilsson-Örtman V, Rowe L.
europepmc   +4 more sources

Reproductive biology of short mackerel, Rastrelliger brachysoma, off Pattani Bay, Lower Gulf of Thailand [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2022
The reproductive biology of short mackerel, Rastrelliger brachysoma, which forms spawning aggregation off Pattani Bay was measured by gonadosomatic index (GSI), size at first maturity (L50) and morphometric maturity classification.
Kay Khine Soe   +5 more
doaj   +1 more source

Size at onset of sexual maturity in Macrobrachium amazonicum (Heller, 1862) phenotypes: an integrative approach [PDF]

open access: yesAnais da Academia Brasileira de Ciências, 2020
The size at the onset of sexual maturity (SOM) was determined in four hololimnetic populations of Macrobrachium amazonicum using morphometric, physiological and functional criteria.
LUCAS R.P. PASCHOAL, FERNANDO J. ZARA
doaj   +1 more source

Reproductive characteristics of doublespotted queenfish, Scomberoides lysan (Actinopterygii: Perciformes: Carangidae), from Sri Lankan waters: Implications for fisheries management [PDF]

open access: yesActa Ichthyologica et Piscatoria, 2013
Background. The doublespotted queenfish, Scomberoides lysan (Forsskål, 1775), is one of the most important and highly priced food fishes popular for dry fish production in Sri Lanka.
W.S. Thulasitha, K. Sivashanthini
doaj   +3 more sources

High bycatch rates of manta and devil rays in the “small-scale” artisanal fisheries of Sri Lanka [PDF]

open access: yesPeerJ, 2021
Background Expanding fisheries in developing nations like Sri Lanka have a significant impact on threatened marine species such as elasmobranchs.
Daniel Fernando, Joshua D. Stewart
doaj   +2 more sources

MEASURING PROBABILISTIC REACTION NORMS FOR AGE AND SIZE AT MATURATION [PDF]

open access: yesEvolution, 2002
We present a new probabilistic concept of reaction norms for age and size at maturation that is applicable when observations are carried out at discrete time intervals. This approach can also be used to estimate reaction norms for age and size at metamorphosis or at other ontogenetic transitions.
Heino, M., Dieckmann, U., Godoe, O.R.
openaire   +5 more sources

Reproduction of the invasive largemouth bass Micropterus salmoides (Lacepède, 1802) in a Neotropical reservoir with suggestions to management and control

open access: yesActa Limnologica Brasiliensia, 2023
Aim The largemouth bass Micropterus salmoides was introduced in more than 50 countries for the purpose of sport fishing. In Brazil, records date from 1922, and nowadays many populations are known to occur in the southern region.
Matheus Oliveira Freitas   +3 more
doaj   +1 more source

Rapid reproductive analysis and length–weight relations for five species of coral-reef fishes (Actinopterygii) from Papua New Guinea: Nemipterus isacanthus, Parupeneus barberinus, Kyphosus cinerascens, Ctenochaetus striatus (Perciformes), and Balistapus undulatus (Tetraodontiformes) [PDF]

open access: yesActa Ichthyologica et Piscatoria, 2017
Background. We present length–weight relations (LWR) and describe the reproductive biology of five species of coral reef fishes from Papua New Guinea (PNG).  Each of these species are targeted by artisanal- and small-scale commercial ...
K. Longenecker   +8 more
doaj   +3 more sources

Y‐chromosome haplotypes are associated with variation in size and age at maturity in male Chinook salmon

open access: yesEvolutionary Applications, 2020
Variation in size and age at maturity is an important component of life history that is influenced by both environmental and genetic factors. In salmonids, large size confers a direct reproductive advantage through increased fecundity and egg quality in ...
Garrett J. McKinney   +5 more
doaj   +1 more source

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