Results 41 to 50 of about 75,070 (212)
El objetivo del estudio fue describir el desarrollo morfológico del apéndice masculino del camarón de agua dulce Macrobrachium caementarius. Los camarones se colectaron en el río Lacramarca, Perú.
Walter Reyes-Avalos +2 more
doaj +2 more sources
El conocimiento de la biología y pesquería de una especie explotada es esencial para un manejo racional y una producción sostenida. De febrero a diciembre de 1994 se colectó información de una de las especies más importantes por los volúmenes de ...
José C. Riofrío Q.
doaj +1 more source
Spawning of yellowfin tuna and skipjack in the Eastern Tropical Pacific, as inferred from studies of gonad development [PDF]
(PDF contains 70 pages.
Orange, Craig J.
core
A study of the age, growth, sexual maturity, and spawning of the anchoveta, Cetengraulis mysticetus, in the Gulf of Panama [PDF]
ENGLISH: Crew members of tuna clippers and Commission personnel are collecting specimens of anchovetas (Cetengraulis mysticetus) for studies of the biology of this important tuna-bait species.
Howard, Gerald V., Landa, Antonio
core
La langosta Panulirus gracilis es importante como recurso pesquero de las comunidades costeras en el Pacífico Norte de Costa Rica. Debido a la importancia de actualizar el conocimiento relacionado con el patrón reproductivo de esta especie, se analizaron
Helven Naranjo Madrigal
doaj
El estudio se realizó mediante el análisis histológico de las gónadas de la hembra. Se determinó la fecundidad. Esta información se completó con los datos correspondientes, obtenidos del muestreo realizado de 1969 a 1975: longitud total y peso total de ...
Sonia Ruth Brodsky +1 more
doaj
Observations on the life history and identity of intraspecific groups of the anchoveta, Cetengraulis mysticetus, in Montijo Bay and Chiriquí Province, Panama [PDF]
ENGLISH: Howard and Landa (1958) and Barrett and Howard (1961) have studied the life history of the anchoveta in most of the areas where this species occurs in important quantities. The Gulf of Panama was the only area of Panama included in these studies,
Bayliff, William H.
core
Size at maturity and length-weight relationships of the blurred lantern shark Etmopterus bigelowi (Squaliformes: Etmopteridae) caught off southeastern Brazil [PDF]
The blurred lantern shark Etmopterus bigelowi, a deep-water squaloid shark, is globally widespread in temperate and tropical waters, but there is little available information about its biology owing to its relative rarity of capture and taxonomic ...
Amorim, Mário Jorge +5 more
core +1 more source
Anatomical, histological, and developmental testicular changes from birth to puberty were studied in 80 Japanese quails. Ten birds per week were body weighed and slaughtered to measure the testis. Testicular tissue samples were collected and evaluated. Body weight varied from 35 g at week 1 to 180 g at week 8.
Rospigliosi Y, Juan de Dios +1 more
openaire +4 more sources
We present biological information of commercially important deep-sea shrimps for a potentially new fishery in the Colombian Caribbean Sea. To do so, our study aimed at providing information on the size structure, the size at sexual maturity and the sex ratio of the deep-sea shrimps Aristaeo morphafoliacea, Pleoticus robustus, Penaeopsis serrata.
Jorge Paramo, Samuel Núñez-Ricardo
openaire +2 more sources

