Results 51 to 60 of about 127,163 (156)

Dynamics of reproductive ecology of the fish Ompok bimaculatus (Siluriformes: Siluridae) in six tropical rivers of the Ganges basin, India

Cuadernos de investigación UNED, 2017
The silurid butter catfish, Ompok bimaculatus (Bloch, 1794), is widely distributed in the plains and sub-mountain regions of India, but not enough is known about its reproductive potential is still insufficient.
Agnihotri Praveen, Sarkar Uttam Kumar, Nagpure Naresh Sahebrao, Mishra Rahsya Mani, Kumar Ravindra, Awasthi Abhishek, Pandey Brijesh Kumar   +6 more
doaj   +1 more source

An Overview of Gillnet and Trammel Net Size Selectivity in the Turkish Inland Fisheries

Aquatic Sciences and Engineering
This study compiled and remodelled length selectivity studies carried out on fish caught with gill nets and trammel nets in the inland fishery in Türkiye and evaluated them based on both the initial reproduction length and minimum landing size of species.
Mehmet Cilbiz, Tuncay Ateşşahin
doaj   +1 more source

Variation in age and size at sexual maturity in Kemp’s ridley sea turtles

Endangered Species Research, 2014
Age at sexual maturity (AgeSM) is one of the most serious demographic data gaps for sea turtle populations. Better estimates of AgeSM and associated variance would improve evaluation of population dynamics and responses of populations to disturbances and
KA Bjorndal, J Parsons, W Mustin, AB Bolten   +3 more
doaj   +1 more source

Reproductive cycle and size at first sexual maturity of the white shrimp Penaeus schmitti (Burkenroad, 1936) in northeastern Brazil

Latin American Journal of Aquatic Research, 2018
The present study aimed to investigate the reproductive cycle and size at first maturity of Penaeus schmitti through a macro and microscopic approach. Between August 2011 and July 2012, 1169 specimens were collected by an artisanal fishing vessel operating a double trawl off the coast of Pernambuco, northeast Brazil. The total proportion of males (42%
Peixoto, Silvio, Calazans, Nathalia, Silva, Emanuell Felipe, Nole, Leandro, Soares, Roberta, Frédou, Flávia Lucena   +5 more
openaire   +2 more sources

Heterochrony of puberty in the European badger (Meles meles) can be explained by growth rate and group-size: Evidence for two endocrinological phenotypes.

PLoS ONE, 2019
Puberty is a key stage in mammalian ontogeny, involving endocrinological, physiological and behavioural changes, moderated by intrinsic and extrinsic factors. Thus, not all individuals within one population achieve sexual maturity simultaneously.
Nadine Adrianna Sugianto, Chris Newman, David Whyte Macdonald, Christina Dagmar Buesching   +3 more
doaj   +1 more source

Differential Sexual Maturity Among Breeding Adults of Black Sea Turtle (Chelonia mydas agassizii) from Michoacan, Mexico

Diversity
This work assessed the sexual maturity of breeding females and males of black sea turtles (Chelonia mydas agassizii) from the population in Michoacan, Mexico.
Carlos Delgado-Trejo, Miguel Ángel Reyes-López, David Guillermo Pérez-Ishiwara, Omar Domínguez-Domínguez, Andrea Tapia-García, Fátima Yedith Camacho-Sánchez, Cutzi Bedolla-Ochoa   +6 more
doaj   +1 more source

Identifying peak breeding season and estimating size at first maturity of mud crab (Scylla olivacea) from a coastal region of Bangladesh. [PDF]

Heliyon, 2020
Ali MY, Hossain MB, Sana S, Rouf MA, Yasmin S, Sarower MG.   +5 more
europepmc   +1 more source

Sex Ratio and Gonadal Maturity of Marble Goby (Oxyeleotris marmorata) in Lake Tempe, Indonesia

Aquatic Life Sciences
Understanding the sex ratio and initial gonadal maturity size of fish populations is essential for effective conservation and sustainable fishery management.
Nurul Mutiara Irwan, Sharifuddin Bin Andi Omar, Budiman Yunus   +2 more
doaj   +1 more source

Can weight/length relationship predict size at first maturity? A case study with two species of Characidae

Neotropical Ichthyology, 2010
A weight/length relationship was established for Astyanax jacuhiensis (Cope, 1894) (n = 370) and Cheirodon ibicuhiensis Eigenmann, 1915 (n = 701), from samples taken monthly in Fortaleza Lagoon, Cidreira, Rio Grande do Sul, from December 1991 through ...
Nelson F. Fontoura, Anamélia S. Jesus, Gabriel G. Larre, Juliana R. Porto   +3 more
doaj  

Length at first maturity of 42 freshwater fish species in the Itaipu Reservoir reveals strong reproductive-size relationships

Neotropical Ichthyology
The length at first maturity (L50) was estimated for 42 freshwater fish species caught by professional fishers in the Itaipu Reservoir, located in the Paraná River basin, Paraná State, Brazil. Sampling was conducted between March 1988 and October 2024 at
Éder André Gubiani, Anderson Luís Maciel, Geuza Cantanhêde, Luiz Guilherme dos Santos Ribas, Pitágoras Augusto Piana, Suelen Zontta Kiem, Caroline Henn   +6 more
doaj   +1 more source