Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Robert E. Knowlton"'
Autor:
Robert E. Knowlton, Heather R. Spence
Publikováno v:
Southeastern Naturalist. 7:207-218
Living, freshly collected individuals of three species of snapping shrimps were studied to determine any differing morphological, developmental, and ecological features: Alpheus heterochaelis, collected from Beaufort, NC; A. angulosus, found mainly i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f3fb207caebcd396ee7e559e162259d
https://doi.org/10.1656/1528-7092(2008)7[207:maddit]2.0.co
https://doi.org/10.1656/1528-7092(2008)7[207:maddit]2.0.co
Autor:
Carol K. Vargo, Robert E. Knowlton
Publikováno v:
Crustaceana. 77:683-715
Eight zoeal larval forms and the postlarval form of the prawn, Palaemon floridanus Chace, 1942, are described, based on laboratory reared animals that passed through as few as 8 or as many as 16 larval instars. This "extended" pattern of larval devel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2894d44ecfd24707aae9cae7e4b90623
https://doi.org/10.1163/1568540041958563
https://doi.org/10.1163/1568540041958563
Publikováno v:
Contributions to Zoology, 70(2), 61-71
Effects of three different macrophytic covers and the presence of alternative prey on survival of grass shrimp (Palaemonetes pugio and P. vulgaris) subjected to predation by killifish (Fundulus heteroclitus) were studied in the laboratory. Overall, s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47fb0e0bfbe5027a4adfb65d83c16155
https://doi.org/10.1163/18759866-07002001
https://doi.org/10.1163/18759866-07002001
Autor:
Robert E. Knowlton, Paul S. Gross
Publikováno v:
Journal of Crustacean Biology. 19:8-13
The effect of eyestalk ablation at various times on size (overall body length, carapace length, and body width) of fourth instar (postlarval instar during normal development) Alpheus heterochaelis was studied. Animals which underwent bilateral eyesta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::186710b638abdb32230dae092887f815
https://doi.org/10.2307/1549541
https://doi.org/10.2307/1549541
Autor:
Heather R. Spence, Robert E. Knowlton
Publikováno v:
Southeastern Naturalist. 7:565-567
Living, freshly collected individuals of three species of snapping shrimps were studied to determine any differing morphological, developmental, and ecological features: Alpheus heterochaelis, collected from Beaufort, NC; A. angulosus, found mainly i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::983e8f16f64c119813cadb82a76a708e
https://doi.org/10.1656/1528-7092-7.3.565
https://doi.org/10.1656/1528-7092-7.3.565
Autor:
Paul S. Gross, Robert E. Knowlton
Publikováno v:
Invertebrate Reproduction & Development. 32:119-126
Summary Eyestalk ablation at particular times during the second (2 and 20 h post-hatching) and third (10 h intervals up to 70 h) larval instars was studied with regard to effects on instar duration and mortality in the snapping shrimp, Alpheus hetero
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99784edbf3830fa5df00c54f1b892cf4
https://doi.org/10.1080/07924259.1997.9672612
https://doi.org/10.1080/07924259.1997.9672612
Autor:
Robert E. Knowlton
Publikováno v:
Journal of Experimental Zoology. 270:162-174
Zoea larvae of Alpheus heterochaelis were reared in isolation in the laboratory at selected temperature levels (17, 22, 25, and 27°C) and 32‰ salinity. One or both eyestalks were removed from some animals (experimentals), or antennae from others (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::681750f4c2ea7cc8a3adffada39712b4
https://doi.org/10.1002/jez.1402700206
https://doi.org/10.1002/jez.1402700206
Autor:
Paul S. Gross, Robert E. Knowlton
Publikováno v:
The Biological bulletin. 202(1)
The eyestalk of many crustaceans contains the X-organ, the presumptive site of production and release of many protein and peptide hormones into the hemolymph. Removal of the eyestalk deprives the animal of these hor- mones and is known to affect many
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::552701b49ce083b263e752e219453685
https://pubmed.ncbi.nlm.nih.gov/11842014
https://pubmed.ncbi.nlm.nih.gov/11842014
Publikováno v:
Invertebrate Biology. 116:243
Experiments were conducted to evaluate the effect of different macrophytes on the distribution of grass shrimps. Populations of Palaemonetes pugio and P. vulgaris were placed separately, then together, in an experimental (aquarium) environment compri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b3593ec433ea91cff4f5df78482ddad
https://doi.org/10.2307/3226900
https://doi.org/10.2307/3226900
Autor:
Robert E. Knowlton, Richard H Schoen
Publikováno v:
Comparative Biochemistry and Physiology Part A: Physiology. 79:519-524
1. 1. Larvae (first zoeae) of Palaemonetes vulgaris are relatively stenohaline (optimum salinity = 20%.), adults euryhaline (96-hr LD50 values: 0.8 and 51%.). 2. 2. The concentration of blood sodium remains nearly constant over the salinity range 5
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fa5bf21ea256d8604be64fb712b3673
https://doi.org/10.1016/0300-9629(84)90440-7
https://doi.org/10.1016/0300-9629(84)90440-7