Results 81 to 90 of about 2,569 (174)

Biologia reprodutiva de Echinometra lucunter (Echinodermata: Echinoidea) na Praia da Costa, Vila Velha, Espírito Santo Reproductive biology of Echinometra lucunter (Echinodermata: Echinoidea) in Praia da Costa, Vila Velha, Espírito Santo

Zoologia (Curitiba), 2009
Echinometra lucunter Linnaeus, 1758 is a tropical sea urchin with strong bioerosive potential. Consequently, this species has great ecological importance.
Fátima L. F. Mariante, Gabriela B. Lemos, Frederico J. Eutrópio, Levy C. Gomes   +3 more
doaj   +1 more source

Effect of temperature on gonadosomatic index (GSI) of Oreochromis karongae (Trewavas)

, 2002
Japan International Cooperation Agency (JICA)
Kamanga, L.J., Kaunda, E., Mtimuni, J.P., Maluwa, A.O., Mfitilodze, W.M.   +4 more
openaire   +2 more sources

Fecundity Study and Histological Analysis of the Gonads of the Sea Cucumber Holothuria tubulosa (Echinodermata: Holothuroidea) in the Central Aegean Sea, Greece: Insights into Reproductive Biology

Fishes
The Atlanto-Mediterranean sea cucumber Holothuria tubulosa is a species of great ecological and commercial importance, making it a primary target for collection in the Mediterranean region. This study investigated the reproductive biology of H. tubulosa (
Athina Balatsou, Chrysoula Apostologamvrou, Dimitris Vafidis   +2 more
doaj   +1 more source

Corporal and testicular biometry in wild boar from birth to 12 months of age Biometria corporal e testicular de javalis do nascimento aos 12 meses de idade

Revista Ceres, 2013
The aim of this tudy was to evaluate corporal and testicular development in wild boars (Sus scrofa scrofa) from birth to 12 months of age, evaluating body weight, biometric testicular parameters, and gonadosomatic index.
Danillo Velloso Ferreira Murta, Deiler Sampaio Costa, Marcelo Diniz Santos, Fábio José Carvalho Faria, Tarcízio Antônio R��go de Paula   +4 more
doaj  

Length-weight relation, condition factor and gonadosomatic index of the whitemouth croaker, Micropogonias furnieri (Desmarest, 1823) (Actinopterygii: Sciaenidae), caught in Lençóis Bay, state of Maranhão, eastern Amazon, Brazil

Brazilian Journal of Oceanography
The whitemouth croaker, Micropogonias furnieri, which is exploited off the state of Maranhão, Brazil, reinforces the need for maintenance programs of natural stocks of this species to assist in the management of this exploited resource.
James Werllen de Jesus Azevedo, Antonio Carlos Leal de Castro, Marcelo Henrique Lopes Silva   +2 more
doaj   +1 more source

EFFECTS OF ZINC AND CADMIUM ON CONDITION FACTOR, HEPATOSOMATIC AND GONADOSOMATIC INDEX OF Oreochromis niloticus

, 2019
Effects of Zn and Cd on condition factor (CF), hepatosomatic (HIS) and gonadosomatic (GSI) of Oreochromis niloticus, after exposing the animals to 10 % of their LC50 values, namely 6.0 ppm Zn and 1.6 ppm Cd, over 7, 15, and 30 days. Standard mathematical formulations were used in determining the mentioned parameters.
Çiftçi N., Ay Ö., Karayakar F., Cicik B., Erdem C.   +4 more
openaire   +2 more sources

Reproductive characteristics of mackerel scad Decapterus macarellus (Cuvier, 1833) in northern Philippine waters

Croatian Journal of Fisheries
Mackerel scad Decapterus macarellus is a highly valuable species in the Philippines municipal and commercial fishing industry, particularly in northern Philippine waters in the Babuyan Channel fishing ground.
Villarao Melanie C., Encarnacion Angel B.   +1 more
doaj   +1 more source

Social and reproductive physiology and behavior of the Neotropical cichlid fish Cichlasoma dimerus under laboratory conditions

Neotropical Ichthyology, 2011
In this work we describe for the first time the social and reproductive behavior of the Neotropical fish Cichlasoma dimerus (Heckel, 1840) [Perciformes: Cichlidae], endemic to the Paraná River basin, using a comprehensive-integral approach, including ...
Felipe Alonso, Maximiliano Cánepa, Renata Guimarães Moreira, Matías Pandolfi   +3 more
doaj  

Gonadosomatic index of sturgeon, beluga and stellate sturgeon during their life period in the rivers

Вестник Астраханского государственного технического университета. Серия: Рыбное хозяйство, 2012
The results of the study of morphophysiological variability of sturgeon migrating to the river Volga from the Caspian Sea are presented. Gonadosomatic indices of sturgeon, beluga and stellate sturgeon for the periods 1970–1973 and 2002–2005 are compared.
Nguyen, Din, Raspopov, Vyacheslav, Barabanov, Vitaliy, Mishchenko, Alexander, Kurmanbaev, Abay   +4 more
openaire   +1 more source

Gonadosomatic Index (GSI) of Sardinella lemuru from Pantukan, Davao de Oro

World Journal of Environmental Research
This study investigates the gonadosomatic index of Sardinella lemuru, a commercially important species inhabiting highly productive marine environments. Despite its economic and ecological value, there is limited information on the reproductive biology of this species, particularly concerning the gonadosomatic index, which is essential for ...
openaire   +1 more source