| dc.creator |
AHMADI , AHMADI |
|
| dc.date |
2018 |
|
| dc.date.accessioned |
2020-06-15T04:01:26Z |
|
| dc.date.available |
2020-06-15T04:01:26Z |
|
| dc.identifier |
http://eprints.ulm.ac.id/5114/1/11.%20Journal%20of%20fisheries%20and%20life%20sciences.%20Phototaxis%20mechanism%20and%20morphometric%20characteristic%20of%20American%20crayfish.pdf |
|
| dc.identifier |
AHMADI , AHMADI (2018) Phototaxis Mechanism and Morphometric Characteristic of American Crayfish (Procambarus clarkii). Phototaxis Mechanism and Morphometric Characteristic of American Crayfish (Procambarus clarkii), 3. pp. 44-51. ISSN 2456‐6268 |
|
| dc.identifier.uri |
https://repo-dosen.ulm.ac.id//handle/123456789/12216 |
|
| dc.description |
American crayfish (Procambarus clarkii) supports beneficially for aquaculture industry
and is also considered as invasive species due to their adverse impacts on the native
species and ecosystems. This study aimed at investigating Phototaxis mechanism, lengthweight
relationship and condition factor of P. clarkii from the pond. Crayfish were
collected using the four light traps with different light intensities (215-2,050 lx). The traps
made of 6-mm iron frames (605025 cm) and black 3/5 inch hexagonal mesh wire. Data
on body sizes and sex of crayfish were analyzed. A total of 256 specimens (74-112 mm
TL) comprising 157 males (61%) and 99 females (39%) were collected. There were no
significant differences in the average total length (TL), carapace length (CL), chelae
length (ChL) and weight (W) of males or females among the four traps (p > 0.05). The
CL/TL and ChL/TL ratios and condition factor of males were considerably higher than
females (p < 0.001). Males showed negative allometric growth (b = 2.757), while females
exhibited isometric growth (b = 3.002). The positive group responses of crayfish were
more pronounced at 90-94 mm TL and 20-29 g weight. P. clarkii positively responded to
different light intensities. The light traps can be used to improve the harvesting procedures
of commercial aquaculture.
KEYWORDS: Allometric growth Condition factor Length-weight Lighted trap Procambarus clarkii |
|
| dc.format |
text |
|
| dc.publisher |
Faculty of Marine and Fisheries, Lambung Mangkurat University, Indonesia. |
|
| dc.relation |
http://eprints.ulm.ac.id/5114/ |
|
| dc.subject |
SH Aquaculture. Fisheries. Angling |
|
| dc.title |
Phototaxis Mechanism and Morphometric Characteristic of American Crayfish (Procambarus clarkii) |
|
| dc.type |
Article |
|
| dc.type |
PeerReviewed |
|