Results 61 to 70 of about 140,256 (159)

Reproductive cycle and gonadal development of Leukoma pectorina (Bivalvia: Veneridae) on the northern coast of Brazil

Scientia Marina
The reproductive cycle and gonadal development of the “sarnambi”, Leukoma pectorina (Lamarck, 1818), was studied between June 2008 and July 2009 on the coast of Pará (Brazil).
Ewertton Souza Gadelha, Ricarla Romilia Viana dos Santos, Rosália Furtado Cutrim Souza   +2 more
doaj   +1 more source

Reproductive biology of the largehead hairtail Trichiurus lepturus (Teleostei: Trichiuridae): implications to the fisheries management on shallow coastal waters in northeastern Brazil

Boletim do Instituto de Pesca
The largehead hairtail Trichiurus lepturus is an important fishery resource and a source of income for artisanal fishers in northeastern Brazil. In the region, this species has recently attracted the attention of investors considering its export to ...
Carlos Eduardo Lira dos Santos Silva, Cezar augusto Freire Fernandes, Caroline Vieira Feitosa   +2 more
doaj   +1 more source

Estimating size at first maturity (L50) from Gonadossomatic Index (GSI) data

Neotropical Ichthyology
Correct estimates of size at first maturity (L50) are useful for fish stock management and different methods have been proposed. In this study we propose the use of a modified logistic to estimate L50, including a variable asymptote (A). We also test the
Nelson F. Fontoura, Aloísio S. Braun, Paulo Cesar C. Milani   +2 more
doaj   +1 more source

Characterizing the Norway Lobster Nephrops norvegicus (L., Homarida: Decapoda) Maturity of Males in the Mediterranean Sea: Morphological and Physiological Aspects

Animals
In male decapods, such as the Norway lobster Nephrops norvegicus, sexual maturity is not easily determined by macroscopic examination of gonads and few studies have been conducted on this topic.
Cristina Porcu, Noemi Pascale, Andrea Bellodi, Pierluigi Carbonara, Alessandro Cau, Riccardo Demurtas, Antonello Mulas, Maria Cristina Follesa   +7 more
doaj   +1 more source

Use of minimum legal size in managing black clam (Villorita cyprinoides) fishery in India

International Journal of Aquatic Biology, 2014
Using size at first maturity (SFM) as a biological reference point, the minimum legal size (MLS) for the black clam, Villorita cyprinoides was fixed at 20 mm. Corresponding minimum legal weight was calculated as 3.4 g.
Nagampoozhi Suja, Kolliyil Sunil Mohamed
doaj  

Gestational Age, Size, and Maturity [PDF]

Archives of Disease in Childhood, 1967
openaire   +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

Sex-specific plasticity and genotype × sex interactions for age and size of maturity in the sheepshead swordtail, Xiphophorus birchmanni. [PDF]

J Evol Biol, 2016
Boulton K, Rosenthal GG, Grimmer AJ, Walling CA, Wilson AJ.   +4 more
europepmc   +1 more source

Centurial Variation in Size at Maturity of Eastern Baltic Cod (Gadus morhua) Mirrors Conditions for Growth. [PDF]

Ecol Evol
Svedäng H, Hornborg S, Grimvall A.
europepmc   +1 more source

Observations on sexual dimorphism, sex ratio, and reproduction of Anolis nebulosus (Squamata: Dactyloidae) from Nayarit, Mexico

Phyllomedusa: Journal of Herpetology, 2015
Guillermo A. Woolrich-Piña, Geoffrey R. Smith, Julio A. Lemos-Espinal, Juan Pablo Ramírez-Silva   +3 more
doaj   +1 more source