Results 201 to 210 of about 5,026 (247)

Sexual size dimorphism of the freshwater shrimp Macrobrachium jelskii (Miers, 1877) (Decapoda: Palaemonidae) and its relationship to Rensch’s rule

, 2020
Rensch’s rule attempts to explain the evolutionary processes that have resulted in the current patterns of sexual size dimorphism of several taxa. This rule predicts that sexual size dimorphism increases according to the average body size, when males are
W. M. Nascimento, Isis C. De Lucena, R. S. Macêdo, A. Pinheiro   +3 more
semanticscholar   +1 more source

Elucidating taxonomic problems of two closely related freshwater prawn lineages of the genus Macrobrachium (Caridea: Palaemonidae): A geometric morphometrics approach

Zoologischer Anzeiger, 2023
C. S. Nogueira, N. F. Camargo, J. A. Pantaleão, R. C. Costa   +3 more
semanticscholar   +1 more source

Estimates of growth and longevity of six species of freshwater shrimps (Macrobrachium spp.) (Decapoda: Caridea: Palaemonidae) from Costa Rica

, 2020
Information about growth is of particular relevance for stock assessment and management as well as for evaluating the aquaculture potential of any decapod species, but this information is lacking for the Central American species of MacrobrachiumSpence ...
M. Ibarra, I. Wehrtmann
semanticscholar   +1 more source

Diet, ontogenetic changes and rhythm of feeding activities in Macrobrachium macrobrachion (Herklots, 1851) (Decapoda, Palaemonidae) in the waterbodies and rivers of Benin, West Africa

, 2020
Knowledge of the diet of Macrobrachium macrobrachion (Herklots, 1851) in its natural environment is a key factor facilitating its successful breeding. We have analysed the stomach content of 452 specimens collected from the Ouémé River Delta (ORD) (338 ...
G. Koussovi, F. Niass, C. J. Allozounhoue, M. Dahouda, C. Bonou, E. Montchowui   +5 more
semanticscholar   +1 more source

Reproductive biology of the freshwater shrimp Macrobrachium tenellum (Smith, 1871) (Decapoda: Caridea: Palaemonidae) in Mexico

, 2020
We analyzed the reproductive cycle of females of the palaemonid shrimp Macrobrachium tenellum (Smith, 1871) collected in the Ameca River, between the Jalisco and Nayarit states, Mexico. We studied the seasonal occurrence of ovigerous females during the
E. López-Uriarte, F. Vega-Villasante, I. Wehrtmann, E. Cortés‐Jacinto, Marcelo U. García-Guerrero, Daniel Badillo-Zapata, Olimpia Chong-Carrillo, M. Vargas-Ceballos   +7 more
semanticscholar   +1 more source

Osmoregulation and respiratory metabolism in brazilian Macrobrachium (Decapoda, palaemonidae)

Comparative Biochemistry and Physiology Part A: Physiology, 1983
Abstract 1. 1. The effect of salinity (0, 7, 14, 21, 28 and 35‰) on osmoregulatory capability and metabolic rate in adult Macrobrachium acanthurus, M. heterochirus, M. olfersii and M. potiuna , was investigated at 20°C using a microcryoscope and Warburg respirometer. 2. 2.
Gloria S. Moreira, John C. McNamara, Sandra E. Shumway, Plinio S. Moreira   +3 more
openaire   +1 more source

A Tropical Shrimp in the Bay of Fundy (Decapoda, Palaemonidae)

Crustaceana, 1970
A specimen of Leander tenuicornis (Say) (Decapoda, family Palaemonidae) was taken near the mouth of the Bay of Fundy on August 24, 1969. This is the first record of this species for the Bay of Fundy, and none have been reported from the Gulf of Maine proper. The specimen is an ovigerous female 29 millimeters total length, including the rostrum.
openaire   +1 more source

The Breeding Characters of Palaemonetes Varians (Leach) (Decapoda, Palaemonidae)

Crustaceana, 1968
Wahrend des Studium der externen (Universitat zu Liverpool) und der internen (Freie Universitat, Amsterdam) Faktoren, welche auf die Zwischenhautungsperiode von Palaemonetes varians (Leach) einwirken, wurden die Fortpflanzungseigenschaften dieser Art naher untersucht, beschrieben und verglichen mit denen von Palaemon elegans Rathke (cf.
L.J. Antheunisse, N.P. Van Den Hoven, D.J. Jefferies   +2 more
openaire   +1 more source

The Influence of Environment on the Morphology of Macrobrachium australiense (Decapoda: Palaemonidae)

Aquaculture International, 2004
The common endemic Australian freshwater prawn, Macrobrachium australiense is recognised as having potential as a culture species. Across the species’ natural range high variation exists for external morphological traits of relevance to culture. Previous studies have demonstrated that morphological variation can often be correlated with environmental ...
Dimmock, Amanda, Williamson, Ian, Mather, Peter   +2 more
openaire   +2 more sources

Hepatopancreatic sucrase ofMacrobrachium lamarei (Crustacea, Caridea, Palaemonidae)

Proceedings: Animal Sciences, 1982
The effect, of seven factors was studied on the activity of hepatopancreatic sucrase ofMacrobrachium lamarrei. Its optimum pH is 6·0 and optimum temperature 50° C and its activity was suppressed by the two end products, glucose and fructose. On prolonging incubation period sucrase activity remained constant up to 8 hr, declined thereafter, finally ...
Padma Saxena, Ramesh Chandra Murthy
openaire   +1 more source