Results 91 to 100 of about 5,088 (233)
Vertebrate Natural History Notes from Arkansas, 2017 [PDF]
Because meaningful observations of natural history are not always part of larger studies, important pieces of information often are unreported. Small details, however, can fills gaps in understanding and also lead to interesting questions about ...
Buckley, M. +10 more
core +3 more sources
Report on the 2013: Rapid assessment survey of marine species at New England Bays and Harbors [PDF]
Introduced species (i.e., non-native species that have become established in\ud a new location) have increasingly been recognized as a concern as they have\ud become more prevalent in marine and terrestrial environments (Mooney and\ud Cleland 2001 ...
Cao, Yuangyu +22 more
core +3 more sources
El estado de Tabasco presenta una compleja y alta diversidad de humedales que incluye tipos palustres (20.72%), costeros (3.93%), lacustres (1.74%) y ribereños (1.37%), los cuales cubren el 27% del territorio estatal.
Everardo Barba +2 more
doaj
Larger and heavier individuals of the invasive shrimp Palaemon macrodactylus in the Salado River, Argentina [PDF]
Different populations of caridean shrimp species exhibit intraspecific variation in their life-history traits as a response to environmental heterogeneity.
Alda, Maria del Pilar +2 more
core +2 more sources
Palaemonid shrimps form a large and diversified group distributed primarily in marine waters. Within the family Palaemonidae the subfamily Palaemoninae is composed of 26 genera and more than 370 species inhabiting marine and fresh waters in epigean and ...
Alejandro Botello, Fernando Alvarez
doaj
Effect of altered photoperiodism (altered intensity and day length) on neuroendocrine function and ovarian maturation in an ocypod crab, Ocypoda macrocera [PDF]
In marine invertebrates, light forms a significant external signal (' Zeitgeber', Aschoff, 1960) to control various reproductive activities (Segal, 1970).
Nadarajalingam, K
core
HORMONAL REGULATION OF THE DISTAL RETINAL PIGMENT OF PALAEMONETES
1. After removal of one eyestalk the distal pigment of the intact eye of Palaemonetes light-adapts more slowly and to a less extent for a given illumination; dark-adaptation is unaffected.2. The eyestalks are the chief sources of light-adapting hormone; lesser amounts are found in brain, connectives and ventral ganglia.3.
FRANK A. BROWN +2 more
openaire +2 more sources
Gear considerations in the artisanal shrimp fishery of the Cross River Estuary, Nigeria [PDF]
The artisanal shrimp fishery of the Cross River Estuary, SE Nigeria is exploited with three main shrimping gears, viz: beach seine, push net and trap. While the beach seine and push net are active gears, the trap is passive.
Holzlohner, S., Nwosu, F.M.
core
Diversidad de invertebrados bentónicos del Río de la Plata
The Rio de la Plata river present along the south coastal fringe different invertebrate assemblages related with substrate type, size sediment grains and organic matter content into the bedsediments.
Inés Irma César +6 more
doaj
An assessment of the coastal dumpsites and their impacts on shrimp mortality in the Lagos lagoon was investigated. The study involved a census of dumpsites in the major sections of the coastline associated with anthropogenic activities, followed by ...
NH Amaeze, CJ Abel-Obi
doaj +1 more source

