Knowledge (XXG)

Kina (animal)

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245: 396: 291: 49: 74: 470:, have experienced population decline due to the effects of global warming and overfishing. This has increased Kina population size all throughout New Zealand. Kina continue to multiply rapidly, even in their natural environment, caused by a lack of adequate predation. Once Kina populations become out of control, kelp forest can be entirely eaten away, leaving bare rocks, also known as Kina Barrens. A notable example of a Kina Barren is the 437:
is not a profitable species for aquaculture, there are many studies on the complete culture of this species, especially relating to roe enhancement from fished sea urchins. There is strong interest in the production of good quality roe through roe enhancement, which could allow the export of them to
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Individuals smaller than 1 cm of diameter are found attached under both intertidal and subtidal rocks, whereas individuals between 1–4 cm are found in intertidal and subtidal areas under the rocks, or within small depressions in rocks. After the sea urchins reach 4 cm they migrate to
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maintained in the laboratory is around 1 mm of diameter per month. Maturity in this species depends on the feed quality and availability rather than the sea urchin size. Therefore, it can reach maturity as small as 30 mm if it is fed with a prepared diet.
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Roe enhancement for only nine weeks can give the greatest return for the lowest costs (feeding and maintenance). Also, it is more profitable to enhance sea urchins with low gonad index which are found in the North Island rather than the South Island.
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Kina have been a traditional component of Māori diet since pre-European times and has been fished commercially since 1986 in small quantities under the quota management system in restricted areas along the coast of New Zealand. Attempts to export
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Artificial diets for sea urchins are well developed. However, more studies in appropriate artificial food for newly settled sea urchins are necessary as well as the design of systems for the nursery culture of post-settled sea urchins.
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prefers areas with moderate wave action. In the north of New Zealand it is found mostly on rocky seafloor areas but also in areas of sandy seafloor. In the South Island it is also found in abundant densities throughout the fiords.
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has an annual breeding cycle. It becomes sexually mature between 3.5 and 7.5 cm in diameter, depending on the population. Gonads are ripe from October and individuals can spawn from November to February.
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Swimming larvae complete development in the water column between 4 and 6 weeks. Other studies related to larval development report development in the laboratory can take between 22 and 30 days. The larvae of
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James, Philip J.; Heath, Philip; Unwin, Martin J. (September 2007). "The effects of season, temperature and initial gonad condition on roe enhancement of the sea urchin Evechinus chloroticus".
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This sea urchin is found all around New Zealand in shallow waters and up to 12–14 metres deep, although there are also intertidal populations in the north of both the North and South Islands.
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Sea urchin gonads are highly prized in some Asian and European seafood markets where demand has been increasing. In the New Zealand market, the roe can reach NZ$ 70 per kg. However, because
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as well as artificial surfaces. High sedimentation loads in the water column, such as those associated with residential construction, have a negative effect on settling sea urchins.
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Choat, J.H.; Schiel, David R (April 1982). "Patterns of distribution and abundance of large brown algae and invertebrate herbivores in subtidal regions of northern New Zealand".
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can grow between 0.8 and 1 cm in diameter only in its first year of life, and growth rate of in wild populations has been reported between 1–2 cm in diameter annually.
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Villouta, E.; Chadderton, W. L.; Pugsley, C. W.; Hay, C. H. (December 2001). "Effects of sea urchin(Evechinus chloroticus)grazing in Dusky Sound, Fiordland, New Zealand".
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Barker MF, Keogh JA, Lawrence JM and Lawrence AL. 1998. Feeding rate, absorption efficiencies, growth, and enhancement of gonad production in the New Zealand sea urchin
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Kina shells, also known as tests, have become a symbol of coastal New Zealand. The shells have been used in crafts, such as ornaments and jewellery boxes.
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Lamare, Miles D.; Mladenov, Philip V. (January 2000). "Modelling somatic growth in the sea urchin Evechinus chloroticus (Echinoidea: Echinometridae)".
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is distributed throughout New Zealand and in some northern and southern offshore islands. It is the most common sea urchin species in New Zealand.
308:, red algae and encrusting substrate. Larval stages can feed on different species of unicellular algae in a size range between 5 and 50 μm. 430:
is not well known in Japan and has a reputation for having a bitter taste, this sea urchin is unable to reach a high price in export markets.
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Effects of copper toxicity on the sea urchin Evechinus chloroticus across multiple life stages and using realistic exposure scenarios
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Walker, M. M. (December 1984). "Larval life span, larval settlement, and early growth ofEvechinus chloroticus(Valenciennes)".
407:, often eaten raw from the sea. Kina were known to develop a bitter taste during much of the year, with the blooming of the 259:
is oval in shape, covered by a large number of spines, which are used as protection. In between the spines are a number of
1081:"Origin and transport of larvae of the sea urchin Evechinus chloroticus (Echinodermata:Echinoidea) in a New Zealand fiord" 230:
to Asian markets have been unsuccessful, so it may not be an economically attractive species for aquaculture development.
1350:"Award-winning kina research – Wetland construction at Lake Okaro – Ecological engineers – French Polynesia at Bream Bay" 1028:
Dix, Trevor G. (December 1970). "Biology ofEvechinus chloroticus(echinoidea: Echinometridae) from different localities".
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Valenciennes (Echinoidea: Echinometridae) fed prepared and natural diets. Journal of Shellfish Research 17: 1583–1590.
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Marine Park, which after also experiencing overfishing, has been almost entirely stripped of other marine life.
339: 334: 395: 211:. This echinoderm belongs to the family Echinometridae and it can reach a maximum diameter of 16–17 cm. 1780: 1519: 1584: 1706: 377: 168: 31: 705:
James P. 2010. Sea urchins: opportunities and lessons. New Zealand Aquaculture 36 (July/August): 12–13.
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James, Philip J.; Heath, Philip L. (June 2008). "Long term roe enhancement of Evechinus chloroticus".
571:"The efficiency and effectiveness of different sea urchin removal methods for kelp forest restoration" 222:
ecosystems. Kina are now being actively removed from many ecosystems for marine conservation efforts.
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Kina populations throughout New Zealand have dramatically grown due the effects of overfishing and
48: 1724: 1323: 1223: 1166: 1110: 1053: 999: 909: 893: 757: 68: 1571: 1510:, from An Encyclopaedia of New Zealand, edited by A. H. McLintock, originally published in 1966. 1711: 1649: 1693: 1592: 1463: 1399: 1331: 1274: 1231: 1174: 1118: 1061: 1007: 950: 940: 901: 850: 797: 765: 654: 608: 551: 541: 345: 1734: 1698: 1391: 1313: 1266: 1213: 1158: 1100: 1045: 989: 932: 885: 842: 807: 747: 646: 598: 590: 533: 1430: 351: 404: 1387: 1309: 1262: 1209: 1154: 1096: 1041: 985: 881: 838: 743: 642: 586: 570: 1294:"Biology ofevechinus chloroticus(Echinoidia: Echinometridae) from different localities" 728:"Biology ofevechinus chloroticus(echinoidea: Echinometridae) from different localities" 215: 135: 1395: 1270: 936: 650: 537: 17: 1764: 1488: 846: 412: 913: 1597: 970:"Interrelations between sea urchins and spiny lobsters in northeastern New Zealand" 471: 61: 1318: 1293: 1218: 1193: 1162: 1049: 927:
R McEdward, Larry; G Miner, Benjamin (2007). "Chapter 5 Echinoid larval ecology".
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are known to settle on substrates covered with coralline algal species, such as
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F Barker, Michael (2007). "Chapter 16 Ecology of Evechinus chloroticus".
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Secrets of the Sea: The Story of New Zealand's Native Sea Creatures
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in summer indicating times when the roe was particularly palatable.
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Kina shells have become a symbol of the beach in New Zealand
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New Zealand Journal of Marine and Freshwater Research
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New Zealand Journal of Marine and Freshwater Research
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New Zealand Journal of Marine and Freshwater Research
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New Zealand Journal of Marine and Freshwater Research
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New Zealand Journal of Marine and Freshwater Research
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New Zealand Journal of Marine and Freshwater Research
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The most important predators are the 1493:. New Zealand Marine Science Society. 7: 1673:fca48012-13ea-4fe4-8e8b-83965738ee05 968:Andrew, NL; MacDiarmid, AB (1991). 343:, the seven-armed prickly starfish 1786:Endemic echinoderms of New Zealand 792:Vennell, Robert (5 October 2022). 25: 1396:10.1016/j.aquaculture.2008.03.006 651:10.1016/j.aquaculture.2007.03.011 445:The growth rate in juveniles of 403:Kina are a traditional food for 319:such as the cymatiid gastropods 72: 1085:Marine Ecology Progress Series 974:Marine Ecology Progress Series 1: 1319:10.1080/00288330.1977.9515409 1271:10.1016/S0022-0981(99)00107-0 1219:10.1080/00288330.1969.9515273 1192:Dix, Trevor G. (March 1969). 1163:10.1080/00288330.1984.9516060 1050:10.1080/00288330.1970.9515355 937:10.1016/S0167-9309(07)80069-X 890:10.1080/00288330.2001.9517060 753:10.1080/00288330.1970.9515331 538:10.1016/S0167-9309(07)80080-9 1292:Dix, Trevor G. (June 1972). 847:10.1016/0022-0981(82)90155-1 726:Dix, Trevor G. (June 1970). 674:"Enhancing urchin roe value" 1812: 1454:Evans, Kate (2020-03-11). 1431:"A tragedy of the commons" 29: 1771:Animals described in 1846 174: 167: 69:Scientific classification 67: 55: 46: 41: 1352:. NIWA. 1 September 2005 349:, and the spiny lobster 340:Coscinasterias calamaria 325:and Charonia rubicunda, 438:markets such as Japan. 42:New Zealand sea urchin 1776:Commercial echinoderms 1435:New Zealand Geographic 458:Environmental concerns 433:Despite the fact that 400: 298: 253: 18:New Zealand sea urchin 1707:Paleobiology Database 1572:Evechinus chloroticus 1558:Evechinus chloroticus 1528:Evechinus chloroticus 1418:Evechinus chloroticus 398: 385:Evechinus chloroticus 378:Corallina officinalis 364:Evechinus chloroticus 335:eleven-armed sea star 302:Evechinus chloroticus 297:feeding on brown kelp 295:Evechinus chloroticus 293: 275:Evechinus chloroticus 257:Evechinus chloroticus 250:Evechinus chloroticus 247: 234:Evechinus chloroticus 200:Evechinus chloroticus 178:Evechinus chloroticus 27:Species of sea urchin 30:For other uses, see 1796:New Zealand seafood 1388:2008Aquac.278...89J 1310:1972NZJMF...6...48D 1263:2000JEMBE.243...17L 1210:1969NZJMF...3...13D 1155:1984NZJMF..18..393W 1097:1998MEPS..174..107L 1079:Lamare, MD (1998). 1042:1970NZJMF...4..385D 986:1991MEPS...70..211A 882:2001NZJMF..35.1007V 839:1982JEMBE..60..129C 744:1970NZJMF...4...91D 643:2007Aquac.270..115J 587:2023ResEc..3113754M 575:Restoration Ecology 160:E. chloroticus 1106:10.3354/meps174107 995:10.3354/meps070211 401: 391:In a human context 299: 254: 1758: 1757: 1694:Open Tree of Life 1520:Taxon identifiers 803:978-1-77554-179-0 595:10.1111/rec.13754 346:Astrostole scabra 192: 191: 16:(Redirected from 1803: 1751: 1750: 1738: 1737: 1728: 1727: 1715: 1714: 1702: 1701: 1689: 1688: 1676: 1675: 1666: 1665: 1653: 1652: 1640: 1639: 1627: 1626: 1614: 1613: 1601: 1600: 1588: 1587: 1575: 1574: 1562: 1561: 1560: 1547: 1546: 1545: 1515: 1495: 1494: 1484: 1478: 1477: 1475: 1474: 1451: 1445: 1444: 1442: 1441: 1427: 1421: 1414: 1408: 1407: 1371: 1362: 1361: 1359: 1357: 1346: 1340: 1339: 1321: 1289: 1283: 1282: 1246: 1240: 1239: 1221: 1189: 1183: 1182: 1138: 1127: 1126: 1108: 1076: 1070: 1069: 1025: 1016: 1015: 997: 965: 959: 958: 924: 918: 917: 876:(5): 1007–1024. 865: 859: 858: 833:(2–3): 129–162. 822: 816: 815: 789: 774: 773: 755: 723: 706: 703: 690: 689: 687: 685: 676:. 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Index

New Zealand sea urchin
Kina

the Noises
Hauraki Gulf
Scientific classification
Edit this classification
Eukaryota
Animalia
Echinodermata
Echinoidea
Camarodonta
Echinometridae
Evechinus
Binomial name
Valenciennes
sea urchin
New Zealand
climate change
kelp forest

tube feet

algae
Molluscs
Charonia capax
starfish
eleven-armed sea star
Coscinasterias calamaria
Astrostole scabra

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